aboutsummaryrefslogtreecommitdiff
blob: 0a9d99edcddb8bfc29763b5d036deabdee519c6a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
# portage.py -- core Portage functionality 
# Copyright 1998-2003 Daniel Robbins, Gentoo Technologies, Inc.
# Distributed under the GNU Public License v2
# $Header: /local/data/ulm/cvs/history/var/cvsroot/gentoo-src/portage/pym/portage.py,v 1.339 2003/09/11 03:36:21 carpaski Exp $

VERSION="2.0.49"

from stat import *
from commands import *
from select import *
from output import *
from time import sleep
from random import shuffle
import string,sys,os

import getbinpkg

ostype=os.uname()[0]
if ostype=="Linux":
	userland="GNU"
	import missingos
	lchown=missingos.lchown
	os.environ["XARGS"]="xargs -r"
elif ostype=="Darwin":
	userland="BSD"
	lchown=os.chown
	os.environ["XARGS"]="xargs"	
else:
	sys.stderr.write(red("Operating system")+" \""+ostype+"\" "+red("currently unsupported. Exiting.")+"\n")
	sys.exit(1)
	
os.environ["USERLAND"]=userland

import re,types,sys,shlex,shutil,xpak,fcntl,signal,time,cPickle,atexit,grp,traceback,commands,pwd,cvstree
signal.signal(signal.SIGCHLD, signal.SIG_DFL)

#Secpass will be set to 1 if the user is root or in the portage group.
uid=os.getuid()
secpass=0
wheelgid=0
if uid==0:
	secpass=2
try:
	wheelgid=grp.getgrnam("wheel")[2]
	if (not secpass) and (wheelgid in os.getgroups()):
		secpass=1
except KeyError:
	sys.stderr.write("portage initialization: your system doesn't have a 'wheel' group.\n")
	sys.stderr.write("Please fix this as it is a normal system requirement. 'wheel' is GID 10\n")
	sys.stderr.write("'emerge baselayout' and an 'etc-update' should remedy this problem.\n")
	pass

#Discover the uid and gid of the portage user/group
try:
	portage_uid=pwd.getpwnam("portage")[2]
	portage_gid=grp.getgrnam("portage")[2]
	if (secpass==0):
		secpass=1
except KeyError:
	portage_uid=0
	portage_gid=wheelgid
	sys.stderr.write("\n")
	sys.stderr.write(  red("portage: 'portage' user or group missing. Please update baselayout\n"))
	sys.stderr.write(  red("         and merge portage user(250) and group(250) into your passwd\n"))
	sys.stderr.write(  red("         and group files. Non-root compilation is disabled until then.\n"))
	sys.stderr.write(      "         Also note that non-root/wheel users will need to be added to\n")
	sys.stderr.write(      "         the portage group to do portage commands.\n")
	sys.stderr.write("\n")
	sys.stderr.write(      "         For the defaults, line 1 goes into passwd, and 2 into group.\n")
	sys.stderr.write(green("         portage:x:250:250:portage:/var/tmp/portage:/bin/false\n"))
	sys.stderr.write(green("         portage::250:portage\n"))
	sys.stderr.write("\n")

if (uid!=0) and (portage_gid not in os.getgroups()):
	sys.stderr.write("\n")
	sys.stderr.write(red("*** You are not in the portage group. You may experience cache problems\n"))
	sys.stderr.write(red("*** due to permissions preventing the creation of the on-disk cache.\n"))
	sys.stderr.write(red("*** Please add this user to the portage group if you wish to use portage.\n"))
	sys.stderr.write("\n")

incrementals=["USE","FEATURES","ACCEPT_KEYWORDS","ACCEPT_LICENSE","CONFIG_PROTECT_MASK","CONFIG_PROTECT","PRELINK_PATH","PRELINK_PATH_MASK"]
stickies=["KEYWORDS_ACCEPT","USE","CFLAGS","CXXFLAGS","MAKEOPTS","EXTRA_ECONF","EXTRA_EMAKE"]

def getcwd():
	"this fixes situations where the current directory doesn't exist"
	try:
		return os.getcwd()
	except:
		os.chdir("/")
		return "/"
getcwd()

def abssymlink(symlink):
	"This reads symlinks, resolving the relative symlinks, and returning the absolute."
	mylink=os.readlink(symlink)
	if mylink[0] != '/':
		mydir=os.path.dirname(symlink)
		mylink=mydir+"/"+mylink
	return os.path.normpath(mylink)

def suffix_array(array,suffix,doblanks=1):
	"""Appends a given suffix to each element in an Array/List/Tuple.
	Returns a List."""
	if type(array) not in [types.ListType, types.TupleType]:
		raise TypeError, "List or Tuple expected. Got %s" % type(array)
	newarray=[]
	for x in array:
		if x or doblanks:
			newarray.append(x + suffix)
		else:
			newarray.append(x)
	return newarray

dircache={}
def listdir(mypath,recursive=0,filesonly=0,ignorecvs=0,ignorelist=[],EmptyOnError=0):
	"""List directory contents, using cache.
	Returns none unless EmptyOnError is non-zero"""
	if dircache.has_key(mypath):
		cached_mtime, list, ftype = dircache[mypath]
	else:
		cached_mtime, list, ftype = -1, [], []
	if os.path.isdir(mypath):
		mtime = os.stat(mypath)[ST_MTIME]
	else:
		if EmptyOnError:
			return []
		return None
	if mtime != cached_mtime:
		list = os.listdir(mypath)
		ftype = []
		for x in range(len(list)-1,-1,-1):
			if (list[x] in ignorelist) or \
			   (ignorecvs and (len(list[x]) > 2) and (list[x][:2]==".#")):
				del list[x]
				continue
			if os.path.isfile(mypath+"/"+list[x]):
				ftype.insert(0,0)
			elif os.path.isdir(mypath+"/"+list[x]):
				ftype.insert(0,1)
			else:
				ftype.insert(0,2)
		dircache[mypath] = mtime, list, ftype

	if not filesonly and not recursive:
		return list

	if recursive:
		x=0
		while x<len(ftype):
			if ftype[x]==1 and not (ignorecvs and (len(list[x])>=3) and (("/"+list[x][-3:])=="/CVS")):
				ignored=listdir(mypath+"/"+list[x],recursive,filesonly,ignorecvs,ignorelist,EmptyOnError)
				m,l,f = dircache[mypath+"/"+list[x]]
				l=l[:]
				for y in range(0,len(l)):
					l[y]=list[x]+"/"+l[y]
				list=list+l
				ftype=ftype+f
			x=x+1
	if filesonly:
		rlist=[]
		for x in range(0,len(ftype)):
			if ftype[x]==0:
				rlist=rlist+[list[x]]
	else:
		rlist=list
			
	return rlist

prelink_capable=0
try:
	import fchksum
	def perform_checksum(filename, calc_prelink=prelink_capable):
		if calc_prelink and prelink_capable:
			# Create non-prelinked temporary file to md5sum.
			prelink_tmpfile="/tmp/portage-prelink.tmp"
			try:
				shutil.copy2(filename,prelink_tmpfile)
			except Exception,e:
				sys.stderr.write("!!! Unable to copy file '"+str(filename)+"'.\n")
				sys.stderr.write("!!! "+str(e)+"\n")
				sys.exit(1)
			spawn("/usr/sbin/prelink --undo "+prelink_tmpfile+" &>/dev/null", free=1)
			retval = fchksum.fmd5t(prelink_tmpfile)
			os.unlink(prelink_tmpfile)
			return retval
		else:
			return fchksum.fmd5t(filename)
except ImportError:
	import md5
	def perform_checksum(filename, calc_prelink=prelink_capable):
		prelink_tmpfile="/tmp/portage-prelink.tmp"
		myfilename=filename
		if calc_prelink and prelink_capable:
			# Create non-prelinked temporary file to md5sum.
			# Raw data is returned on stdout, errors on stderr.
			# Non-prelinks are just returned.
			try:
				shutil.copy2(filename,prelink_tmpfile)
			except Exception,e:
				sys.stderr.write("!!! Unable to copy file '"+str(filename)+"'.\n")
				sys.stderr.write("!!! "+str(e)+"\n")
				sys.exit(1)
			spawn("/usr/sbin/prelink --undo "+prelink_tmpfile+" &>/dev/null", free=1)
			myfilename=prelink_tmpfile

		f = open(myfilename, 'rb')
		blocksize=32768
		data = f.read(blocksize)
		size = 0L
		sum = md5.new()
		while data:
			sum.update(data)
			size = size + len(data)
			data = f.read(blocksize)
		f.close()

		if calc_prelink and prelink_capable:
			os.unlink(prelink_tmpfile)
		return (sum.hexdigest(),size)

starttime=long(time.time())
features=[]

def exithandler(foo,bar):
	"""Handles ^C interrupts in a sane manner"""
	global features,secpass
	#remove temp sandbox files
#	if (secpass==2) and ("sandbox" in features):
#		mypid=os.fork()
#		if mypid==0:
#			myargs=[]
#			mycommand="/usr/lib/portage/bin/testsandbox.sh"
#			myargs=["testsandbox.sh","0"]
#			myenv={}
#			os.execve(mycommand,myargs,myenv)
#			os._exit(1)
#			sys.exit(1)
#		retval=os.waitpid(mypid,0)[1]
#		if retval==0:
#			if os.path.exists("/tmp/sandboxpids.tmp"):
#				os.unlink("/tmp/sandboxpids.tmp")
	# 0=send to *everybody* in process group
	portageexit()
	os.kill(0,signal.SIGKILL)
	sys.exit(1)

# dropping the signal handler to gives better tracebacks
# enable unless we're debugging
if not os.environ.has_key("DEBUG"):
	signal.signal(signal.SIGINT,exithandler)

def tokenize(mystring):
	"""breaks a string like 'foo? (bar) oni? (blah (blah))'
	into embedded lists; returns None on paren mismatch"""
	newtokens=[]
	curlist=newtokens
	prevlists=[]
	level=0
	accum=""
	for x in mystring:
		if x=="(":
			if accum:
				curlist.append(accum)
				accum=""
			prevlists.append(curlist)
			curlist=[]
			level=level+1
		elif x==")":
			if accum:
				curlist.append(accum)
				accum=""
			if level==0:
				sys.stderr.write("!!! tokenizer: Unmatched left parenthesis in:\n'"+str(mystring)+"'\n")
				return None
			newlist=curlist
			curlist=prevlists.pop()
			curlist.append(newlist)
			level=level-1
		elif x in string.whitespace:
			if accum:
				curlist.append(accum)
				accum=""
		else:
			accum=accum+x
	if accum:
		curlist.append(accum)
	if (level!=0):
		sys.stderr.write("!!! tokenizer: Exiting with unterminated parenthesis in:\n'"+str(mystring)+"'\n")
		return None
	return newtokens

def evaluate(mytokens,mydefines,allon=0):
	"""removes tokens based on whether conditional definitions exist or not.
	Recognizes !"""
	pos=0
	if mytokens==None:
		return None
	while pos<len(mytokens):
		if type(mytokens[pos])==types.ListType:
			evaluate(mytokens[pos],mydefines)
			if not len(mytokens[pos]):
				del mytokens[pos]
				continue
		elif mytokens[pos][-1]=="?":
			cur=mytokens[pos][:-1]
			del mytokens[pos]
			if allon:
				if cur[0]=="!":
					del mytokens[pos]
			else:
				if cur[0]=="!":
					if ( cur[1:] in mydefines ) and (pos<len(mytokens)):
						del mytokens[pos]
						continue
				elif ( cur not in mydefines ) and (pos<len(mytokens)):
					del mytokens[pos]
					continue
		pos=pos+1
	return mytokens

def flatten(mytokens):
	"""this function now turns a [1,[2,3]] list into
	a [1,2,3] list and returns it."""
	newlist=[]
	for x in mytokens:
		if type(x)==types.ListType:
			newlist.extend(flatten(x))
		else:
			newlist.append(x)
	return newlist

#beautiful directed graph object

class digraph:
	def __init__(self):
		self.dict={}
		#okeys = keys, in order they were added (to optimize firstzero() ordering)
		self.okeys=[]
	
	def addnode(self,mykey,myparent):
		if not self.dict.has_key(mykey):
			self.okeys.append(mykey)
			if myparent==None:
				self.dict[mykey]=[0,[]]
			else:
				self.dict[mykey]=[0,[myparent]]
				self.dict[myparent][0]=self.dict[myparent][0]+1
			return
		if myparent and (not myparent in self.dict[mykey][1]):
			self.dict[mykey][1].append(myparent)
			self.dict[myparent][0]=self.dict[myparent][0]+1
	
	def delnode(self,mykey):
		if not self.dict.has_key(mykey):
			return
		for x in self.dict[mykey][1]:
			self.dict[x][0]=self.dict[x][0]-1
		del self.dict[mykey]
		while 1:
			try:
				self.okeys.remove(mykey)	
			except ValueError:
				break
	
	def allnodes(self):
		"returns all nodes in the dictionary"
		return self.dict.keys()
	
	def firstzero(self):
		"returns first node with zero references, or NULL if no such node exists"
		for x in self.okeys:
			if self.dict[x][0]==0:
				return x
		return None 

	def allzeros(self):
		"returns all nodes with zero references, or NULL if no such node exists"
		zerolist = []
		for x in self.dict.keys():
			if self.dict[x][0]==0:
				zerolist.append(x)
		return zerolist

	def hasallzeros(self):
		"returns 0/1, Are all nodes zeros? 1 : 0"
		zerolist = []
		for x in self.dict.keys():
			if self.dict[x][0]!=0:
				return 0
		return 1

	def empty(self):
		if len(self.dict)==0:
			return 1
		return 0

	def hasnode(self,mynode):
		return self.dict.has_key(mynode)

	def copy(self):
		mygraph=digraph()
		for x in self.dict.keys():
			mygraph.dict[x]=self.dict[x][:]
			mygraph.okeys=self.okeys[:]
		return mygraph

# valid end of version components; integers specify offset from release version
# pre=prerelease, p=patchlevel (should always be followed by an int), rc=release candidate
# all but _p (where it is required) can be followed by an optional trailing integer

endversion={"pre":-2,"p":0,"alpha":-4,"beta":-3,"rc":-1}
# as there's no reliable way to set {}.keys() order
# netversion_keys will be used instead of endversion.keys
# to have fixed search order, so that "pre" is checked
# before "p"
endversion_keys = ["pre", "p", "alpha", "beta", "rc"]

#parse /etc/env.d and generate /etc/profile.env

def env_update(makelinks=1):
	global root
	if not os.path.exists(root+"etc/env.d"):
		prevmask=os.umask(0)
		os.makedirs(root+"etc/env.d",0755)
		os.umask(prevmask)
	fns=listdir(root+"etc/env.d",EmptyOnError=1)
	fns.sort()
	pos=0
	while (pos<len(fns)):
		if len(fns[pos])<=2:
			del fns[pos]
			continue
		if (fns[pos][0] not in string.digits) or (fns[pos][1] not in string.digits):
			del fns[pos]
			continue
		pos=pos+1

	specials={"KDEDIRS":[],"PATH":[],"CLASSPATH":[],"LDPATH":[],"MANPATH":[],"INFODIR":[],"INFOPATH":[],"ROOTPATH":[],"CONFIG_PROTECT":[],"CONFIG_PROTECT_MASK":[],"PRELINK_PATH":[],"PRELINK_PATH_MASK":[]}
	env={}

	for x in fns:
		# don't process backup files
		if x[-1]=='~' or x[-4:]==".bak":
			continue
		myconfig=getconfig(root+"etc/env.d/"+x)
		if myconfig==None:
			sys.stderr.write("!!! Parsing error in "+str(root)+"etc/env.d/"+str(x)+"\n")
			#parse error
			continue
		# process PATH, CLASSPATH, LDPATH
		for myspec in specials.keys():
			if myconfig.has_key(myspec):
 				if myspec in ["LDPATH","PATH","PRELINK_PATH","PRELINK_PATH_MASK"]:
					specials[myspec].extend(string.split(varexpand(myconfig[myspec]),":"))
				else:
					specials[myspec].append(varexpand(myconfig[myspec]))
				del myconfig[myspec]
		# process all other variables
		for myenv in myconfig.keys():
			env[myenv]=varexpand(myconfig[myenv])
			
	if os.path.exists(root+"etc/ld.so.conf"):
		myld=open(root+"etc/ld.so.conf")
		myldlines=myld.readlines()
		myld.close()
		oldld=[]
		for x in myldlines:
			#each line has at least one char (a newline)
			if x[0]=="#":
				continue
			oldld.append(x[:-1])
		oldld.sort()
	#	os.rename(root+"etc/ld.so.conf",root+"etc/ld.so.conf.bak")
	# Where is the new ld.so.conf generated? (achim)
	else:
		oldld=None
	if (oldld!=specials["LDPATH"]):
		#ld.so.conf needs updating and ldconfig needs to be run
		newld=open(root+"etc/ld.so.conf","w")
		newld.write("# ld.so.conf autogenerated by env-update; make all changes to\n")
		newld.write("# contents of /etc/env.d directory\n")
		for x in specials["LDPATH"]:
			newld.write(x+"\n")
		newld.close()

	# Update prelink.conf if we are prelink-enabled
	if prelink_capable:
		newprelink=open(root+"etc/prelink.conf","w")
		newprelink.write("# prelink.conf autogenerated by env-update; make all changes to\n")
		newprelink.write("# contents of /etc/env.d directory\n")
	
		for x in ["/bin","/sbin","/usr/bin","/usr/sbin","/lib","/usr/lib"]:
			newprelink.write("-l "+x+"\n");
		for x in specials["LDPATH"]+specials["PATH"]+specials["PRELINK_PATH"]:
			if not x:
				continue
			plmasked=0
			for y in specials["PRELINK_PATH_MASK"]:
				if y[-1]!='/':
					y=y+"/"
				if y==x[0:len(y)]:
					plmasked=1
					break
			if not plmasked:
				newprelink.write("-h "+x+"\n")
		newprelink.close()

	# We can't update links if we haven't cleaned other versions first, as
	# an older package installed ON TOP of a newer version will cause ldconfig
	# to overwrite the symlinks we just made. -X means no links. After 'clean'
	# we can safely create links.
	sys.stderr.write(">>> Regenerating "+str(root)+"etc/ld.so.cache...\n")
	if makelinks:
		getstatusoutput("cd / ; /sbin/ldconfig -r "+root)
	else:
		getstatusoutput("cd / ; /sbin/ldconfig -X -r "+root)
	del specials["LDPATH"]

	penvnotice ="# THIS FILE IS AUTOMATICALLY GENERATED BY env-update.\n"
	penvnotice+="# DO NOT EDIT THIS FILE. CHANGES TO STARTUP PROFILES\n"
	cenvnotice=penvnotice;
	penvnotice+="# GO INTO /etc/profile NOT /etc/profile.env\n\n"
	cenvnotice+="# GO INTO /etc/csh.cshrc NOT /etc/csh.env\n\n"

	#create /etc/profile.env for bash support
	outfile=open(root+"/etc/profile.env","w")
	outfile.write(penvnotice)

	for path in specials.keys():
		if len(specials[path])==0:
			continue
		outstring="export "+path+"='"
		if path in ["CONFIG_PROTECT","CONFIG_PROTECT_MASK"]:
			for x in specials[path][:-1]:
				outstring += x+" "
		else:
			for x in specials[path][:-1]:
				outstring=outstring+x+":"
		outstring=outstring+specials[path][-1]+"'"
		outfile.write(outstring+"\n")
	
	#create /etc/profile.env
	for x in env.keys():
		if type(env[x])!=types.StringType:
			continue
		outfile.write("export "+x+"='"+env[x]+"'\n")
	outfile.close()
	
	#create /etc/csh.env for (t)csh support
	outfile=open(root+"/etc/csh.env","w")
	outfile.write(cenvnotice)
	
	for path in specials.keys():
		if len(specials[path])==0:
			continue
		outstring="setenv "+path+" '"
		for x in specials[path][:-1]:
			outstring=outstring+x+":"
		outstring=outstring+specials[path][-1]+"'"
		outfile.write(outstring+"\n")
		#get it out of the way
		del specials[path]
	
	#create /etc/csh.env
	for x in env.keys():
		if type(env[x])!=types.StringType:
			continue
		outfile.write("setenv "+x+" '"+env[x]+"'\n")
	outfile.close()

def grabfile(myfilename):
	"""This function grabs the lines in a file, normalizes whitespace and returns lines in a list; if a line
	begins with a #, it is ignored, as are empty lines"""

	try:
		myfile=open(myfilename,"r")
	except IOError:
		return []
	mylines=myfile.readlines()
	myfile.close()
	newlines=[]
	for x in mylines:
		#the split/join thing removes leading and trailing whitespace, and converts any whitespace in the line
		#into single spaces.
		myline=string.join(string.split(x))
		if not len(myline):
			continue
		if myline[0]=="#":
			continue
		newlines.append(myline)
	return newlines

def grabdict(myfilename,juststrings=0):
	"""This function grabs the lines in a file, normalizes whitespace and returns lines in a dictionary"""
	newdict={}
	try:
		myfile=open(myfilename,"r")
	except IOError:
		return newdict 
	mylines=myfile.readlines()
	myfile.close()
	for x in mylines:
		#the split/join thing removes leading and trailing whitespace, and converts any whitespace in the line
		#into single spaces.
		myline=string.split(x)
		if len(myline)<2:
			continue
		if juststrings:
			newdict[myline[0]]=string.join(myline[1:])
		else:
			newdict[myline[0]]=myline[1:]
	return newdict

def grabints(myfilename):
	newdict={}
	try:
		myfile=open(myfilename,"r")
	except IOError:
		return newdict 
	mylines=myfile.readlines()
	myfile.close()
	for x in mylines:
		#the split/join thing removes leading and trailing whitespace, and converts any whitespace in the line
		#into single spaces.
		myline=string.split(x)
		if len(myline)!=2:
			continue
		newdict[myline[0]]=string.atoi(myline[1])
	return newdict

def writeints(mydict,myfilename):
	try:
		myfile=open(myfilename,"w")
	except IOError:
		return 0
	for x in mydict.keys():
		myfile.write(x+" "+`mydict[x]`+"\n")
	myfile.close()
	return 1

def writedict(mydict,myfilename,writekey=1):
	"""Writes out a dict to a file; writekey=0 mode doesn't write out
	the key and assumes all values are strings, not lists."""
	try:
		myfile=open(myfilename,"w")
	except IOError:
		sys.stderr.write("Failed to open file for writedict(): "+str(myfilename)+"\n")
		return 0
	if not writekey:
		for x in mydict.values():
			myfile.write(x+"\n")
	else:
		for x in mydict.keys():
			myfile.write(x+" ")
			for y in mydict[x]:
				myfile.write(y+" ")
			myfile.write("\n")
	myfile.close()
	return 1

def getconfig(mycfg,tolerant=0):
	mykeys={}
	try:
		f=open(mycfg,'r')
	except IOError:
		sys.stderr.write("Could not open \""+mycfg+"\"; exiting.\n")
		sys.exit(1)
	lex=shlex.shlex(f)
	lex.wordchars=string.digits+string.letters+"~!@#$%*_\:;?,./-+{}"     
	lex.quotes="\"'"
	while 1:
		key=lex.get_token()
		if (key==''):
			#normal end of file
			break;
		equ=lex.get_token()
		if (equ==''):
			#unexpected end of file
			#lex.error_leader(self.filename,lex.lineno)
			if not tolerant:
				sys.stderr.write("!!! Unexpected end of config file: variable "+str(key)+"\n")
				return None
			else:
				return mykeys
		elif (equ!='='):
			#invalid token
			#lex.error_leader(self.filename,lex.lineno)
			if not tolerant:
				sys.stderr.write("!!! Invalid token (not \"=\") "+str(equ)+"\n")
				return None
			else:
				return mykeys
		val=lex.get_token()
		if (val==''):
			#unexpected end of file
			#lex.error_leader(self.filename,lex.lineno)
			if not tolerant:
				sys.stderr.write("!!! Unexpected end of config file: variable "+str(key)+"\n")
				return None
			else:
				return mykeys
		mykeys[key]=varexpand(val,mykeys)
	return mykeys

#cache expansions of constant strings
cexpand={}
def varexpand(mystring,mydict={}):
	try:
		return cexpand[" "+mystring]
	except KeyError:
		pass
	"""
	new variable expansion code.  Removes quotes, handles \n, etc.
	This code is used by the configfile code, as well as others (parser)
	This would be a good bunch of code to port to C.
	"""
	numvars=0
	mystring=" "+mystring
	#in single, double quotes
	insing=0
	indoub=0
	pos=1
	newstring=" "
	while (pos<len(mystring)):
		if (mystring[pos]=="'") and (mystring[pos-1]!="\\"):
			if (indoub):
				newstring=newstring+"'"
			else:
				insing=not insing
			pos=pos+1
			continue
		elif (mystring[pos]=='"') and (mystring[pos-1]!="\\"):
			if (insing):
				newstring=newstring+'"'
			else:
				indoub=not indoub
			pos=pos+1
			continue
		if (not insing): 
			#expansion time
			if (mystring[pos]=="\n"):
				#convert newlines to spaces
				newstring=newstring+" "
				pos=pos+1
			elif (mystring[pos]=="\\"):
				#backslash expansion time
				if (pos+1>=len(mystring)):
					newstring=newstring+mystring[pos]
					break
				else:
					a=mystring[pos+1]
					pos=pos+2
					if a=='a':
						newstring=newstring+chr(007)
					elif a=='b':
						newstring=newstring+chr(010)
					elif a=='e':
						newstring=newstring+chr(033)
					elif (a=='f') or (a=='n'):
						newstring=newstring+chr(012)
					elif a=='r':
						newstring=newstring+chr(015)
					elif a=='t':
						newstring=newstring+chr(011)
					elif a=='v':
						newstring=newstring+chr(013)
					else:
						#remove backslash only, as bash does: this takes care of \\ and \' and \" as well
						newstring=newstring+mystring[pos-1:pos]
						continue
			elif (mystring[pos]=="$") and (mystring[pos-1]!="\\"):
				pos=pos+1
				if (pos+1)>=len(mystring):
					cexpand[mystring]=""
					return ""
				if mystring[pos]=="{":
					pos=pos+1
					terminus="}"
				else:
					terminus=string.whitespace
				myvstart=pos
				while mystring[pos] not in terminus:
					if (pos+1)>=len(mystring):
						cexpand[mystring]=""
						return ""
					pos=pos+1
				myvarname=mystring[myvstart:pos]
				pos=pos+1
				if len(myvarname)==0:
					cexpand[mystring]=""
					return ""
				numvars=numvars+1
				if mydict.has_key(myvarname):
					newstring=newstring+mydict[myvarname] 
			else:
				newstring=newstring+mystring[pos]
				pos=pos+1
		else:
			newstring=newstring+mystring[pos]
			pos=pos+1
	if numvars==0:
		cexpand[mystring]=newstring[1:]
	return newstring[1:]	

# returns a tuple.  (version[string], error[string])
# They are pretty much mutually exclusive.
# Either version is a string and error is none, or
# version is None and error is a string
#
def ExtractKernelVersion(base_dir):
	pathname = os.path.join(base_dir, 'include/linux/version.h')
	try:
		lines = open(pathname, 'r').readlines()
	except OSError, details:
		return (None, str(details))
	except IOError, details:
		return (None, str(details))

	lines = map(string.strip, lines)

	version = ''

	for line in lines:
		items = string.split(line, ' ', 2)
		if items[0] == '#define' and \
			items[1] == 'UTS_RELEASE':
			version = items[2] # - may be wrapped in quotes
		break

	if version == '':
		return (None, "Unable to locate UTS_RELEASE in %s" % (pathname))

	if version[0] == '"' and version[-1] == '"':
		version = version[1:-1]
	return (version,None)

aumtime=0

def autouse(myvartree):
	"returns set of USE variables auto-enabled due to packages being installed"
	global usedefaults
	if profiledir==None:
		return ""
	myusevars=""
	for x in usedefaults:
		mysplit=string.split(x)
		if len(mysplit)<2:
			#invalid line
			continue
		myuse=mysplit[0]
		mydep=x[len(mysplit[0]):]
		#check dependencies; tell depcheck() to ignore settings["USE"] since we are still forming it.
		myresult=dep_check(mydep,myvartree.dbapi,use="no")
		if myresult[0]==1 and not myresult[1]:
			#deps satisfied, add USE variable...
			myusevars=myusevars+" "+myuse
	return myusevars

class config:
	def __init__(self):
		global incrementals
		self.usemask=[]
		self.configlist=[]
		self.backupenv={}
		# back up our incremental variables:
		global profiledir
		self.configdict={}
		# configlist will contain: [ globals, (optional) profile, make.conf, backupenv (incrementals), origenv ]

		#get the masked use flags
		if os.path.exists("/etc/make.profile/use.mask"):
			self.usemask=grabfile("/etc/make.profile/use.mask")
		if os.path.exists("/etc/portage/use.mask"):
			self.usemask=self.usemask+grabfile("/etc/portage/use.mask")

		self.mygcfg=getconfig("/etc/make.globals")
		if self.mygcfg==None:
			sys.stderr.write("!!! Parse error in /etc/make.globals. NEVER EDIT THIS FILE.\n")
			sys.stderr.write("!!! Incorrect multiline literals can cause this. Do not use them.\n")
			sys.stderr.write("!!! Errors in this file should be reported on bugs.gentoo.org.\n")
			sys.exit(1)
		self.configlist.append(self.mygcfg)
		self.configdict["globals"]=self.configlist[-1]

		if profiledir:
			self.mygcfg=getconfig("/etc/make.profile/make.defaults")
			if self.mygcfg==None:
				sys.stderr.write("!!! Parse error in /etc/make.defaults. Never modify this file.\n")
				sys.stderr.write("!!! 'emerge sync' may fix this. If it does not then please report\n")
				sys.stderr.write("!!! this to bugs.gentoo.org and, if possible, a dev on #gentoo (IRC)\n")
				sys.exit(1)
			self.configlist.append(self.mygcfg)
			self.configdict["defaults"]=self.configlist[-1]

		self.mygcfg=getconfig("/etc/make.conf")
		if self.mygcfg==None:
			sys.stderr.write("!!! Parse error in /etc/make.conf.\n")
			sys.stderr.write("!!! Incorrect multiline literals can cause this. Do not use them.\n")
			sys.exit(1)
		self.configlist.append(self.mygcfg)
		self.configdict["conf"]=self.configlist[-1]

		for x in incrementals:
			if os.environ.has_key(x):
				self.backupenv[x]=os.environ[x]
		#auto-use:
		self.configlist.append({})
		self.configdict["auto"]=self.configlist[-1]
		#backup-env (for recording our calculated incremental variables:)
		self.configlist.append(self.backupenv)
		self.configlist.append(os.environ.copy())
		self.configdict["env"]=self.configlist[-1]
		self.lookuplist=self.configlist[:]
		self.lookuplist.reverse()
	
		useorder=self["USE_ORDER"]
		if not useorder:
			#reasonable defaults; this is important as without USE_ORDER, USE will always be "" (nothing set)!
			useorder="env:conf:auto:defaults"
		usevaluelist=useorder.split(":")
		self.uvlist=[]
		for x in usevaluelist:
			if self.configdict.has_key(x):
				#prepend db to list to get correct order
				self.uvlist[0:0]=[self.configdict[x]]		
		self.configdict["env"]["PORTAGE_GID"]=str(portage_gid)
		self.regenerate()
	
	def regenerate(self,useonly=0):
		global incrementals,usesplit,profiledir
		if useonly:
			myincrementals=["USE"]
		else:
			myincrementals=incrementals
		for mykey in myincrementals:
			if mykey=="USE":
				mydbs=self.uvlist		
				self.configdict["auto"]["USE"]=autouse(db[root]["vartree"])
			else:
				mydbs=self.configlist[:-1]
			mysetting=[]
			for curdb in mydbs:
				if not curdb.has_key(mykey):
					continue
				#variables are already expanded
				mysplit=curdb[mykey].split()
				# XXX FIXME -- This needs to be rewritten sanely... use 'not in' XXX
				for x in mysplit:
					if x=="-*":
						# "-*" is a special "minus" var that means "unset all settings".  so USE="-* gnome" will have *just* gnome enabled.
						mysetting=[]
						continue
					if x[0]=="+":
						add=x[1:]
					else:
						add=x
					if x[0]=="-":
						remove=x[1:]
					else:
						remove=x
					#remove any previous settings of this variable
					dellist=[]
					for y in range(0,len(mysetting)):
						if mysetting[y]==remove:
							#we found a previously-defined variable; add it to our dellist for later removal.
							dellist.append(mysetting[y])
					for y in dellist:
						while y in mysetting:
							mysetting.remove(y)
					#now append our new setting
					if add:
						mysetting.append(add)
			#store setting in last element of configlist, the original environment:
			self.configlist[-1][mykey]=string.join(mysetting," ")
		#cache split-up USE var in a global
		usesplit=[]
		for x in string.split(self.configlist[-1]["USE"]):
			if x not in self.usemask:
				usesplit.append(x)

		if self.configlist[-1].has_key("USE_EXPAND"):
			for var in string.split(self.configlist[-1]["USE_EXPAND"]):
				if self.configlist[-1].has_key(var):
					for x in string.split(self.configlist[-1][var]):
						mystr = string.lower(var)+"_"+x
						if mystr not in usesplit:
							usesplit.append(mystr)
							self.configlist[-1]["USE"] += " "+mystr

		# Pre-Pend ARCH variable to USE settings so '-*' in env doesn't kill arch.
		if profiledir:
			if self.configdict["defaults"].has_key("ARCH"):
				if self.configdict["defaults"]["ARCH"]:
					if self.configdict["defaults"]["ARCH"] not in usesplit:
						usesplit.insert(0,self.configdict["defaults"]["ARCH"])
						self.configlist[-1]["USE"]=string.join(usesplit," ")
	
	def __getitem__(self,mykey):
		if mykey=="CONFIG_PROTECT_MASK":
			suffix=" /etc/env.d"
		else:
			suffix=""
		for x in self.lookuplist:
			if x == None:
				sys.stderr.write("!!! lookuplist is null.\n")
			elif x.has_key(mykey):
				return x[mykey]+suffix
		return suffix

	def has_key(self,mykey):
		for x in self.lookuplist:
			if x.has_key(mykey):
				return 1 
		return 0
	
	def keys(self):
		mykeys=[]
		for x in self.lookuplist:
			for y in x.keys():
				if y not in mykeys:
					mykeys.append(y)
		return mykeys

	def __setitem__(self,mykey,myvalue):
		"set a value; will be thrown away at reset() time"
		self.configdict["env"][mykey]=myvalue
	
	def reset(self):
		"reset environment to original settings"
		#for x in self.backupenv.keys():
		#	self.configdict["env"][x]==self.backupenv[x]
		#self.regenerate(useonly=1)
		pass

	def environ(self):
		"return our locally-maintained environment"
		mydict={}
		for x in self.keys(): 
			mydict[x]=self[x]
		if not mydict.has_key("HOME") and mydict.has_key("BUILD_PREFIX"):
			sys.stderr.write("*** HOME not set. Setting to "+mydict["BUILD_PREFIX"]+"\n")
			mydict["HOME"]=mydict["BUILD_PREFIX"]
		return mydict
	
def spawn(mystring,debug=0,free=0,droppriv=0):
	"""spawn a subprocess with optional sandbox protection, 
	depending on whether sandbox is enabled.  The "free" argument,
	when set to 1, will disable sandboxing.  This allows us to 
	spawn processes that are supposed to modify files outside of the
	sandbox.  We can't use os.system anymore because it messes up
	signal handling.  Using spawn allows our Portage signal handler
	to work."""

	# useful if an ebuild or so needs to get the pid of our python process
	settings["PORTAGE_MASTER_PID"]=str(os.getpid())
	droppriv=(droppriv and ("userpriv" in features))
	settings["BASH_ENV"]="/etc/portage/bashrc"

	myargs=[]
	if ("sandbox" in features) and (not free):
		mycommand="/usr/lib/portage/bin/sandbox"
		myargs=["["+settings["PF"]+"] sandbox",mystring]
	else:
		mycommand="/bin/bash"
		if debug:
			myargs=["["+settings["PF"]+"] bash","-x","-c",mystring]
		else:
			myargs=["["+settings["PF"]+"] bash","-c",mystring]

	mypid=os.fork()
	if mypid==0:
		if droppriv:
			if portage_gid and portage_uid:
				#drop root privileges, become the 'portage' user
				os.setgid(portage_gid)
				os.setgroups([portage_gid])
				os.setuid(portage_uid)
				os.umask(002)
			else:
				sys.stderr.write("portage: Unable to drop root for "+str(mystring)+"\n")

		os.execve(mycommand,myargs,settings.environ())
		# If the execve fails, we need to report it, and exit
		# *carefully* --- report error here
		os._exit(1)
		sys.exit(1)
		return # should never get reached

	retval=os.waitpid(mypid,0)[1]
	if (retval & 0xff)==0:
		return (retval >> 8) # return exit code
	else:
		return 16            # interrupted by signal

def fetch(myuris, listonly=0, fetchonly=0):
	"fetch files.  Will use digest file if available."
	if ("mirror" in features) and ("nomirror" in settings["RESTRICT"].split()):
		print ">>> \"mirror\" mode and \"nomirror\" restriction enabled; skipping fetch."
		return 1
	global thirdpartymirrors
	
	if ("nomirror" in settings["RESTRICT"].split()):
		mymirrors=[]
	else:
		mymirrors=settings["GENTOO_MIRRORS"].split()
	
	fetchcommand=settings["FETCHCOMMAND"]
	resumecommand=settings["RESUMECOMMAND"]
	fetchcommand=string.replace(fetchcommand,"${DISTDIR}",settings["DISTDIR"])
	resumecommand=string.replace(resumecommand,"${DISTDIR}",settings["DISTDIR"])
	mydigests=None
	digestfn=settings["FILESDIR"]+"/digest-"+settings["PF"]
	if os.path.exists(digestfn):
		myfile=open(digestfn,"r")
		mylines=myfile.readlines()
		mydigests={}
		for x in mylines:
			myline=string.split(x)
			if len(myline)<4:
				#invalid line
				print "!!! The digest",digestfn,"appears to be corrupt.  Aborting."
				return 0
			try:
				mydigests[myline[2]]={"md5":myline[1],"size":string.atol(myline[3])}
			except ValueError:
				print "!!! The digest",digestfn,"appears to be corrupt.  Aborting."
	if "fetch" in settings["RESTRICT"].split():
		# fetch is restricted.	Ensure all files have already been downloaded; otherwise,
		# print message and exit.
		gotit=1
		for myuri in myuris:
			myfile=os.path.basename(myuri)
			try:
				mystat=os.stat(settings["DISTDIR"]+"/"+myfile)
			except (OSError,IOError),e:
				# file does not exist
				print "!!!",myfile,"not found in",settings["DISTDIR"]+"."
				gotit=0
		if not gotit:
			print
			print "!!!",settings["CATEGORY"]+"/"+settings["PF"],"has fetch restriction turned on."
			print "!!! This probably means that this ebuild's files must be downloaded"
			print "!!! manually.  See the comments in the ebuild for more information."
			print
			spawn("/usr/sbin/ebuild.sh nofetch")
			return 0
		return 1
	locations=mymirrors[:]
	filedict={}
	for myuri in myuris:
		myfile=os.path.basename(myuri)
		if not filedict.has_key(myfile):
			filedict[myfile]=[]
			for y in range(0,len(locations)):
				filedict[myfile].append(locations[y]+"/distfiles/"+myfile)
		if myuri[:9]=="mirror://":
			eidx = myuri.find("/", 9)
			if eidx != -1:
				mirrorname = myuri[9:eidx]
				if thirdpartymirrors.has_key(mirrorname):
					try:
						shuffle(thirdpartymirrors[mirrorname])
					except:
						sys.stderr.write(red("!!! YOU HAVE A BROKEN PYTHON/GLIBC.\n"))
						sys.stderr.write(    "!!! You are most likely on a pentium4 box and have specified -march=pentium4\n")
						sys.stderr.write(    "!!! or -fpmath=sse2. GCC was generating invalid sse2 instructions in versions\n")
						sys.stderr.write(    "!!! prior to 3.2.3-r3. Please rebuild python with either -march=pentium3 or\n")
						sys.stderr.write(    "!!! set -mno-sse2 in your cflags.\n\n\n")
						time.sleep(10)
						
					for locmirr in thirdpartymirrors[mirrorname]:
						filedict[myfile].append(locmirr+"/"+myuri[eidx+1:])		
		else:
				filedict[myfile].append(myuri)
	for myfile in filedict.keys():
		if listonly:
			fetched=0
			sys.stderr.write("\n")
		for loc in filedict[myfile]:
			if listonly:
				sys.stderr.write(loc+" ")
				continue
			try:
				mystat=os.stat(settings["DISTDIR"]+"/"+myfile)
				if mydigests!=None and mydigests.has_key(myfile):
					#if we have the digest file, we know the final size and can resume the download.
					if mystat[ST_SIZE]<mydigests[myfile]["size"]:
						fetched=1
					else:
						#we already have it downloaded, skip.
						#if our file is bigger than the recorded size, digestcheck should catch it.
						if not fetchonly:
							fetched=2
						else:
							# Check md5sum's at each fetch for fetchonly.
							mymd5=perform_md5(settings["DISTDIR"]+"/"+myfile)
							if mymd5 != mydigests[myfile]["md5"]:
								sys.stderr.write("!!! Previously fetched file: "+str(myfile)+" MD5 FAILED! Refetching...\n")
								os.unlink(settings["DISTDIR"]+"/"+myfile)
								fetched=0
							else:
								sys.stderr.write(">>> Previously fetched file: "+str(myfile)+" MD5 ;-)\n")
								fetched=2
								break #No need to keep looking for this file, we have it!
				else:
					#we don't have the digest file, but the file exists.  Assume it is fully downloaded.
					fetched=2
			except (OSError,IOError),e:
				fetched=0
			if fetched!=2:
				#we either need to resume or start the download
				#you can't use "continue" when you're inside a "try" block
				if fetched==1:
					#resume mode:
					sys.stderr.write(">>> Resuming download...\n")
					locfetch=resumecommand
				else:
					#normal mode:
					locfetch=fetchcommand
				sys.stderr.write(">>> Downloading "+str(loc)+"\n")
				myfetch=string.replace(locfetch,"${URI}",loc)
				myfetch=string.replace(myfetch,"${FILE}",myfile)
				myret=spawn(myfetch,free=1)
				
				if mydigests!=None and mydigests.has_key(myfile):
					try:
						mystat=os.stat(settings["DISTDIR"]+"/"+myfile)
						# no exception?  file exists. let digestcheck() report
						# an appropriately for size or md5 errors
						os.chown(settings["DISTDIR"]+"/"+myfile,os.getuid(),portage_gid)
						os.chmod(settings["DISTDIR"]+"/"+myfile,0664)
						if (mystat[ST_SIZE]<mydigests[myfile]["size"]):
							# Fetch failed... Try the next one... Kill 404 files though.
							if (mystat[ST_SIZE]<100000) and (len(myfile)>4) and not ((myfile[-5:]==".html") or (myfile[-4:]==".htm")):
								html404=re.compile("<title>.*(not found|404).*</title>",re.I|re.M)
								try:
									if html404.search(open(settings["DISTDIR"]+"/"+myfile).read()):
										try:
											os.unlink(settings["DISTDIR"]+"/"+myfile)
											sys.stderr.write(">>> Deleting invalid distfile. (Improper 404 redirect from server.)\n")
										except:
											pass
								except:
									pass
							continue
						if not fetchonly:
							fetched=2
							break
						else:
							# File is the correct size--check the MD5 sum for the fetched
							# file NOW, for those users who don't have a stable/continuous
							# net connection. This way we have a chance to try to download
							# from another mirror...
							mymd5=perform_md5(settings["DISTDIR"]+"/"+myfile)
							if mymd5 != mydigests[myfile]["md5"]:
								sys.stderr.write("!!! Fetched file: "+str(myfile)+" MD5 FAILED! Removing corrupt distfile...\n")
								os.unlink(settings["DISTDIR"]+"/"+myfile)
								fetched=0
							else:
								sys.stderr.write(">>> "+str(myfile)+" MD5 ;-)\n")
								fetched=2
								break
					except (OSError,IOError),e:
						fetched=0
				else:
					if not myret:
						fetched=2
						break
		if (fetched!=2) and not listonly:
			sys.stderr.write("!!! Couldn't download "+str(myfile)+". Aborting.\n")
			return 0
	return 1


def digestCreate(myfiles,basedir):
	"""Takes a list of files and the directory they are in and returns the
	dict of dict[filename]=[md5,size]
	returns None on error."""
	mydigests={}
	for x in myfiles:
		print "<<<",x
		myfile=basedir+x
		if not os.access(myfile, os.R_OK):
			print "!!! Given file does not appear to be readable. Does it exist?"
			print "!!! File:",myfile
			return None
		mymd5=perform_md5(myfile)
		mysize=os.stat(myfile)[ST_SIZE]
		mydigests[x]=[mymd5,mysize]
	return mydigests


def digestgen(myarchives,overwrite=1,manifestonly=0):
	"""generates digest file if missing.  Assumes all files are available.	If
	overwrite=0, the digest will only be created if it doesn't already exist."""

	# archive files
	basedir=settings["DISTDIR"]+"/"
	digestfn=settings["FILESDIR"]+"/digest-"+settings["PF"]

	# portage files -- p(ortagefiles)basedir
	pbasedir=settings["O"]+"/"
	manifestfn=pbasedir+"Manifest"

	if not manifestonly:
		if not os.path.isdir(settings["FILESDIR"]):
			os.makedirs(settings["FILESDIR"])
		mycvstree=cvstree.getentries(pbasedir, recursive=1)

		if ("cvs" in features) and os.path.exists(pbasedir+"/CVS"):
			if not cvstree.isadded(mycvstree,"files"):
				if "autoaddcvs" in features:
					print ">>> Auto-adding files/ dir to CVS..."
					spawn("cd "+pbasedir+"; cvs add files",free=1)
				else:
					print "--- Warning: files/ is not added to cvs."

		if (not overwrite) and os.path.exists(digestfn):
			return 1

		print green(">>> Generating digest file...")
		mydigests=digestCreate(myarchives, basedir)
		if mydigests==None: # There was a problem, exit with an errorcode.
			return 0

		try:
			outfile=open(digestfn, "w+")
		except Exception, e:
			print "!!! Filesystem error skipping generation. (Read-Only?)"
			print "!!!",e
			return 0
		for myarchive in myarchives:
			mymd5=mydigests[myarchive][0]
			mysize=mydigests[myarchive][1]
			outfile.write("MD5 "+mymd5+" "+myarchive+" "+str(mysize)+"\n")	
		outfile.close()
		try:
			os.chown(digestfn,os.getuid(),portage_gid)
			os.chmod(digestfn,0664)
		except Exception,e:
			print e

	print green(">>> Generating manifest file...")
	mypfiles=listdir(pbasedir,recursive=1,filesonly=1,ignorecvs=1,EmptyOnError=1)
	if "Manifest" in mypfiles:
		del mypfiles[mypfiles.index("Manifest")]

	mydigests=digestCreate(mypfiles, pbasedir)
	if mydigests==None: # There was a problem, exit with an errorcode.
		return 0

	try:
		outfile=open(manifestfn, "w+")
	except Exception, e:
		print "!!! Filesystem error skipping generation. (Read-Only?)"
		print "!!!",e
		return 0
	for mypfile in mypfiles:
		mymd5=mydigests[mypfile][0]
		mysize=mydigests[mypfile][1]
		outfile.write("MD5 "+mymd5+" "+mypfile+" "+str(mysize)+"\n")	
	outfile.close()
	try:
		os.chown(manifestfn,os.getuid(),portage_gid)
		os.chmod(manifestfn,0664)
	except Exception,e:
		print e

	if "cvs" in features and os.path.exists(pbasedir+"/CVS"):
		mycvstree=cvstree.getentries(pbasedir, recursive=1)
		myunaddedfiles=""
		if not manifestonly and not cvstree.isadded(mycvstree,digestfn):
			if digestfn[:len(pbasedir)]==pbasedir:
				myunaddedfiles=digestfn[len(pbasedir):]+" "
			else:
				myunaddedfiles=digestfn+" "
		if not cvstree.isadded(mycvstree,manifestfn[len(pbasedir):]):
			if manifestfn[:len(pbasedir)]==pbasedir:
				myunaddedfiles+=manifestfn[len(pbasedir):]+" "
			else:
				myunaddedfiles+=manifestfn
		if myunaddedfiles:
			if "autoaddcvs" in features:
				print blue(">>> Auto-adding digest file(s) to CVS...")
				spawn("cd "+pbasedir+"; cvs add "+myunaddedfiles,free=1)
			else:
				print "--- Warning: digests are not yet added into CVS."
	print darkgreen(">>> Computed message digests.")
	print
	return 1


def digestParseFile(myfilename):
	"""(filename) -- Parses a given file for entries matching:
	MD5 MD5_STRING_OF_HEX_CHARS FILE_NAME FILE_SIZE
	Ignores lines that do not begin with 'MD5' and returns a
	dict with the filenames as keys and [md5,size] as the values."""
	try:
		myfile=open(myfilename,"r")
		mylines=myfile.readlines()
	except:
		return None
	mydigests={}
	for x in mylines:
		myline=string.split(x)
		if len(myline)!=4:
			#invalid line
			continue
		if myline[0]!='MD5': # Ignore non-md5 lines.
			continue
		mydigests[myline[2]]=[myline[1],myline[3]]
	return mydigests

# XXXX strict was added here to fix a missing name error.
# XXXX It's used below, but we're not paying attention to how we get it?
def digestCheckFiles(myfiles, mydigests, basedir, note="", strict=0):
	"""(fileslist, digestdict, basedir) -- Takes a list of files and a dict
	of their digests and checks the digests against the indicated files in
	the basedir given. Returns 1 only if all files exist and match the md5s.
	"""
	for x in myfiles:
		if not mydigests.has_key(x):
			print
			print red("!!! No message digest entry found for file \""+x+".\"")
			print "!!! Most likely a temporary problem. Try 'emerge rsync' again later."
			print "!!! If you are certain of the authenticity of the file then you may type"
			print "!!! the following to generate a new digest:"
			print "!!!   ebuild /usr/portage/category/package/package-version.ebuild digest"
			return 0
		myfile=basedir+"/"+x
		if not os.path.exists(myfile):
			if strict:
				print "!!! File does not exist:",myfile
				return 0
			continue
		mymd5=perform_md5(myfile)
		if mymd5 != mydigests[x][0]:
			print
			print red("!!! File is corrupt or incomplete. (Digests do not match)")
			print green(">>> our recorded digest:"),mydigests[x][0]
			print green(">>>  your file's digest:"),mymd5
			print red("!!! File does not exist:"),myfile
			print
			return 0
		else:
			print ">>> md5 "+note+" ;-)",x
	return 1


def digestcheck(myfiles,strict=0):
	"""Checks md5sums.  Assumes all files have been downloaded."""

	# archive files
	basedir=settings["DISTDIR"]+"/"
	digestfn=settings["FILESDIR"]+"/digest-"+settings["PF"]

	# portage files -- p(ortagefiles)basedir
	pbasedir=settings["O"]+"/"
	manifestfn=pbasedir+"Manifest"

	if not (os.path.exists(digestfn) and os.path.exists(manifestfn)):
		if "digest" in features:
			print ">>> No package digest/Manifest file found."
			print ">>> \"digest\" mode enabled; auto-generating new digest..."
			return digestgen(myfiles)
		else:
			if not os.path.exists(manifestfn):
				if strict:
					print red("!!! No package manifest found:"),manifestfn
					return 0
				else:
					print "--- No package manifest found:",manifestfn
			if not os.path.exists(digestfn):
				print "!!! No package digest file found:",digestfn
				print "!!! Type \"ebuild foo.ebuild digest\" to generate it."
				return 0

	mydigests=digestParseFile(digestfn)
	if mydigests==None:
		print "!!! Failed to parse digest file:",digestfn
		return 0
	mymdigests=digestParseFile(manifestfn)
	if "manifest" not in features:
		# XXX: Remove this when manifests become mainstream.
		pass
	elif mymdigests==None:
			print "!!! Failed to parse manifest file:",manifestfn
			if strict:
				return 0
	else:
		# Check the portage-related files here.
		mymfiles=listdir(pbasedir,recursive=1,filesonly=1,ignorecvs=1,EmptyOnError=1)
		for x in range(len(mymfiles)-1,-1,-1):
			if mymfiles[x]=='Manifest': # We don't want the manifest in out list.
				del mymfiles[x]
				continue
			if mymfiles[x] not in mymdigests.keys():
				print red("!!! Security Violation: A file exists that is not in the manifest.")
				print "!!! File:",mymfiles[x]
				if strict:
					return 0
	
		if not digestCheckFiles(mymfiles, mymdigests, pbasedir, "files  "):
			if strict:
				print ">>> Please ensure you have sync'd properly. Please try '"+bold("emerge sync")+"' and"
				print ">>> optionally examine the file(s) for corruption. "+bold("A sync will fix most cases.")
				print
				return 0
			else:
				print "--- Manifest check failed. 'strict' not enabled; ignoring."
				print
	
	# Just return the status, as it's the last check.
	return digestCheckFiles(myfiles, mydigests, basedir, "src_uri")

# parse actionmap to spawn ebuild with the appropriate args
def spawnebuild(mydo,actionmap,debug,alwaysdep=0):
	if alwaysdep or ("noauto" not in features):
		# process dependency first
		if "dep" in actionmap[mydo].keys():
			retval=spawnebuild(actionmap[mydo]["dep"],actionmap,debug,alwaysdep)
			if retval:
				return retval
	# spawn ebuild.sh
	mycommand="/usr/sbin/ebuild.sh "
	return spawn(mycommand + mydo,debug,
				actionmap[mydo]["args"][0],
				actionmap[mydo]["args"][1])

def doebuild(myebuild,mydo,myroot,debug=0,listonly=0,fetchonly=0):
	global settings
	if mydo not in ["help","clean","prerm","postrm","preinst","postinst",
	                "config","touch","setup","depend","fetch","digest",
	                "unpack","compile","install","rpm","qmerge","merge",
	                "package","unmerge", "manifest"]:
		sys.stderr.write("!!! doebuild: Please specify a valid command.\n");
		return 1
	if not os.path.exists(myebuild):
		sys.stderr.write("!!! doebuild: "+str(myebuild)+" not found for "+str(mydo)+"\n")
		return 1
	if myebuild[-7:]!=".ebuild":
		sys.stderr.write("!!! doebuild: "+str(myebuild)+" does not appear to be an ebuild file.\n")
		return 1

	settings.reset()
	if debug: # Otherwise it overrides emerge's settings.
		# We have no other way to set debug... debug can't be passed in
		# due to how it's coded... Don't overwrite this so we can use it.
		settings["PORTAGE_DEBUG"]=str(debug)
	#settings["ROOT"]=root
	settings["ROOT"]=myroot
	settings["STARTDIR"]=getcwd()
	settings["EBUILD"]=os.path.abspath(myebuild)
	settings["O"]=os.path.dirname(settings["EBUILD"])
	category=settings["CATEGORY"]=os.path.basename(os.path.normpath(settings["O"]+"/.."))
	#PEBUILD
	settings["FILESDIR"]=settings["O"]+"/files"
	pf=settings["PF"]=os.path.basename(settings["EBUILD"])[:-7]
	mykey=category+"/"+pf
	settings["ECLASSDIR"]=settings["PORTDIR"]+"/eclass"
	settings["SANDBOX_LOG"]=settings["PF"]
	mysplit=pkgsplit(settings["PF"],0)
	if mysplit==None:
		print "!!! Error: PF is null; exiting."
		return 1
	settings["P"]=mysplit[0]+"-"+mysplit[1]
	settings["PN"]=mysplit[0]
	settings["PV"]=mysplit[1]
	settings["PR"]=mysplit[2]
	if mysplit[2]=="r0":
		settings["PVR"]=mysplit[1]
	else:
		settings["PVR"]=mysplit[1]+"-"+mysplit[2]
	settings["SLOT"]=""
	if settings.has_key("PATH"):
		mysplit=string.split(settings["PATH"],":")
	else:
		mysplit=[]
	if not "/usr/lib/portage/bin" in mysplit:
		settings["PATH"]="/usr/lib/portage/bin:"+settings["PATH"]

	settings["BUILD_PREFIX"]=settings["PORTAGE_TMPDIR"]+"/portage"
	settings["PKG_TMPDIR"]=settings["PORTAGE_TMPDIR"]+"/portage-pkg"
	settings["BUILDDIR"]=settings["BUILD_PREFIX"]+"/"+settings["PF"]

	#set up KV variable -- DEP SPEEDUP :: Don't waste time. Keep var persistent.
	if (mydo!="depend") or not settings.has_key("KV"):
		mykv,err1=ExtractKernelVersion(root+"usr/src/linux")
		if mykv:
			# Regular source tree
			settings["KV"]=mykv
		else:
			settings["KV"]=""

	if (mydo!="depend") or not settings.has_key("KVERS"):
		myso=getstatusoutput("uname -r")
		settings["KVERS"]=myso[1]

	# get possible slot information from the deps file
	if mydo=="depend":
		myso=getstatusoutput("/usr/sbin/ebuild.sh depend")
		if settings.has_key("PORTAGE_DEBUG") and settings["PORTAGE_DEBUG"]=="1":
			print
			print myso[1]
		return myso[0]

	# Build directory creation isn't required for any of these.
	if mydo not in ["fetch","digest","manifest"]:
		try:
			if ("nouserpriv" not in string.split(settings["RESTRICT"])):
				if ("userpriv" in features) and (portage_uid and portage_gid):
					settings["HOME"]=settings["BUILD_PREFIX"]+"/homedir"
					if (secpass==2):
						if os.path.exists(settings["HOME"]):
							spawn("rm -Rf "+settings["HOME"], free=1)
						if not os.path.exists(settings["HOME"]):
							os.makedirs(settings["HOME"])
				elif ("userpriv" in features):
					print "!!! Disabling userpriv from features... Portage UID/GID not valid."
					del features[features.index("userpriv")]
		except Exception, e:
			print "!!! Couldn't empty HOME:",settings["HOME"]
			print "!!!",e

		try:
			# no reason to check for depend since depend returns above.
			if not os.path.exists(settings["BUILD_PREFIX"]):
				os.makedirs(settings["BUILD_PREFIX"])
			os.chown(settings["BUILD_PREFIX"],portage_uid,portage_gid)
			if not os.path.exists(settings["BUILDDIR"]):
				os.makedirs(settings["BUILDDIR"])
			os.chown(settings["BUILDDIR"],portage_uid,portage_gid)

			# Should be ok again to set $T, as sandbox do not depend on it
			settings["T"]=settings["BUILDDIR"]+"/temp"
			if not os.path.exists(settings["T"]):
				os.makedirs(settings["T"])
			os.chown(settings["T"],portage_uid,portage_gid)
			os.chmod(settings["T"],06770)
		except OSError, e:
			print "!!! File system problem. (ReadOnly? Out of space?)"
			print "!!! Perhaps: rm -Rf",settings["BUILD_PREFIX"]
			print "!!!",str(e)
			return 1

		try:
			if ("userpriv" in features) and ("ccache" in features):
				if (not settings.has_key("CCACHE_DIR")) or (settings["CCACHE_DIR"]==""):
					settings["CCACHE_DIR"]=settings["PORTAGE_TMPDIR"]+"/ccache"
				if not os.path.exists(settings["CCACHE_DIR"]):
					os.makedirs(settings["CCACHE_DIR"])
				if not os.path.exists(settings["HOME"]):
					os.makedirs(settings["HOME"])
				os.chown(settings["HOME"],portage_uid,portage_gid)
				os.chmod(settings["HOME"],06770)
		except OSError, e:
			print "!!! File system problem. (ReadOnly? Out of space?)"
			print "!!! Perhaps: rm -Rf",settings["BUILD_PREFIX"]
			print "!!!",str(e)
			return 1

		try:
			mystat=os.stat(settings["CCACHE_DIR"])
			if (mystat[ST_GID]!=portage_gid) or ((mystat[ST_MODE]&02070)!=02070):
				print "*** Adjusting ccache permissions for portage user..."
				os.chown(settings["CCACHE_DIR"],portage_uid,portage_gid)
				os.chmod(settings["CCACHE_DIR"],02770)
				if mystat[ST_GID]!=portage_gid:
					spawn("chown -R "+str(portage_uid)+":"+str(portage_gid)+" "+settings["CCACHE_DIR"], free=1)
					spawn("chmod -R g+rw "+settings["CCACHE_DIR"], free=1)
		except:
			pass

		settings["WORKDIR"]=settings["BUILDDIR"]+"/work"
		settings["D"]=settings["BUILDDIR"]+"/image/"

		if mydo=="unmerge":
			return unmerge(settings["CATEGORY"],settings["PF"],myroot)

		if settings.has_key("PORT_LOGDIR"):
			if os.access(settings["PORT_LOGDIR"]+"/",os.W_OK):
				try:
					os.chown(settings["BUILD_PREFIX"],portage_uid,portage_gid)
					os.chmod(settings["PORT_LOGDIR"],06770)
					if not settings.has_key("LOG_PF") or (settings["LOG_PF"] != settings["PF"]):
						settings["LOG_PF"]=settings["PF"]
						settings["LOG_COUNTER"]=str(get_counter_tick_core("/"))
				except Exception, e:
					settings["PORT_LOGDIR"]=""
					print "!!! Unable to chown/chmod PORT_LOGDIR. Disabling logging."
					print "!!!",e
			else:
				print "!!! Cannot create log... No write access / Does not exist"
				print "!!! PORT_LOGDIR:",settings["PORT_LOGDIR"]
				settings["PORT_LOGDIR"]=""

	# if any of these are being called, handle them -- running them out of the sandbox -- and stop now.
	if mydo in ["help","clean","setup","prerm","postrm","preinst","postinst","config"]:
		return spawn("/usr/sbin/ebuild.sh "+mydo,debug,free=1)
	
	try: 
		settings["SLOT"], settings["RESTRICT"], myuris = db["/"]["porttree"].dbapi.aux_get(mykey,["SLOT","RESTRICT","SRC_URI"])
	except (IOError,KeyError):
		print red("doebuild():")+" aux_get() error; aborting."
		sys.exit(1)

	newuris=flatten(evaluate(tokenize(myuris),string.split(settings["USE"])))	
	alluris=flatten(evaluate(tokenize(myuris),[],1))	
	alist=[]
	aalist=[]
	#uri processing list
	upl=[[newuris,alist],[alluris,aalist]]
	for myl in upl:
		for x in myl[0]:
			mya=os.path.basename(x)
			if not mya in myl[1]:
				myl[1].append(mya)
	settings["A"]=string.join(alist," ")
	settings["AA"]=string.join(aalist," ")
	if ("cvs" in features) or ("mirror" in features):
		fetchme=alluris
		checkme=aalist
	else:
		fetchme=newuris
		checkme=alist

	try:
		if not os.path.exists(settings["DISTDIR"]):
			os.makedirs(settings["DISTDIR"])
		if not os.path.exists(settings["DISTDIR"]+"/cvs-src"):
			os.makedirs(settings["DISTDIR"]+"/cvs-src")
	except OSError, e:
		print "!!! File system problem. Could not create DISTDIR and cvs-src dir."
		print "!!! Fetching may fail:",str(e)

	try:
		mystat=os.stat(settings["DISTDIR"]+"/cvs-src")
		if (mystat[ST_GID]!=portage_gid) or ((mystat[ST_MODE]&02770)!=02770):
			print "*** Adjusting cvs-src permissions for portage user..."
			os.chown(settings["DISTDIR"]+"/cvs-src",0,portage_gid)
			os.chmod(settings["DISTDIR"]+"/cvs-src",02770)
			spawn("chgrp -R "+str(portage_gid)+" "+settings["DISTDIR"]+"/cvs-src", free=1)
			spawn("chmod -R g+rw "+settings["DISTDIR"]+"/cvs-src", free=1)
	except:
		pass

	if not fetch(fetchme, listonly, fetchonly):
		return 1

	if "digest" in features:
		#generate digest if it doesn't exist.
		if mydo=="digest":
			return (not digestgen(checkme,overwrite=1))
		else:
			digestgen(checkme,overwrite=0)
	elif mydo=="digest":
		#since we are calling "digest" directly, recreate the digest even if it already exists
		return (not digestgen(checkme,overwrite=1))
	if mydo=="manifest":
		return (not digestgen(checkme,overwrite=1,manifestonly=1))
	
	if not digestcheck(checkme, ("strict" in features)):
		return 1
	
	if mydo=="fetch":
		return 0

	#initial dep checks complete; time to process main commands

	nosandbox=(("userpriv" in features) and ("usersandbox" not in features))
	actionmap={
			  "setup": {                 "args":(1,0)},         # without  / root
			 "unpack": {"dep":"setup",   "args":(0,1)},         # sandbox  / portage
			"compile": {"dep":"unpack",  "args":(nosandbox,1)}, # optional / portage
			"install": {"dep":"compile", "args":(0,0)},         # sandbox  / root
			    "rpm": {"dep":"install", "args":(0,0)},         # sandbox  / root
    	"package": {"dep":"install", "args":(0,0)},         # sandbox  / root
	}
	
	if mydo in actionmap.keys():	
		if mydo=="package":
			for x in ["","/"+settings["CATEGORY"],"/All"]:
				if not os.path.exists(settings["PKGDIR"]+x):
					os.makedirs(settings["PKGDIR"]+x)
		# REBUILD CODE FOR TBZ2 --- XXXX
		return spawnebuild(mydo,actionmap,debug)
	elif mydo=="qmerge": 
		#qmerge is specifically not supposed to do a runtime dep check
		return merge(settings["CATEGORY"],settings["PF"],settings["D"],settings["BUILDDIR"]+"/build-info",myroot)
	elif mydo=="merge":
		retval=spawnebuild("install",actionmap,debug,1)
		if retval: return retval
		return merge(settings["CATEGORY"],settings["PF"],settings["D"],settings["BUILDDIR"]+"/build-info",myroot,myebuild=settings["EBUILD"])
	else:
		print "!!! Unknown mydo:",mydo
		sys.exit(1)

expandcache={}

def movefile(src,dest,newmtime=None,sstat=None):
	"""moves a file from src to dest, preserving all permissions and attributes; mtime will
	be preserved even when moving across filesystems.  Returns true on success and false on
	failure.  Move is atomic."""
	#print "movefile("+str(src)+","+str(dest)+","+str(newmtime)+","+str(sstat)+")"
	global lchown 	
	try:
		if not sstat:
			sstat=os.lstat(src)
	except Exception, e:
		print "!!! Stating source file failed... movefile()"
		print "!!!",e
		return None

	destexists=1
	try:
		dstat=os.lstat(dest)
	except:
		dstat=os.lstat(os.path.dirname(dest))
		destexists=0

	if destexists:
		if S_ISLNK(dstat[ST_MODE]):
			try:
				os.unlink(dest)
				destexists=0
			except Exception, e:
				pass

	if S_ISLNK(sstat[ST_MODE]):
		try:
			target=os.readlink(src)
			if destexists and not S_ISDIR(dstat[ST_MODE]):
				os.unlink(dest)
			if selinux_enabled:
				sid = selinux.get_lsid(src)
				selinux.secure_symlink(target,dest,sid)
			else:
				os.symlink(target,dest)
			lchown(dest,sstat[ST_UID],sstat[ST_GID])
			return os.lstat(dest)
		except Exception, e:
			print "!!! failed to properly create symlink:"
			print "!!!",dest,"->",target
			print "!!!",e
			return None

	renamefailed=1
	if sstat[ST_DEV]==dstat[ST_DEV] or selinux_enabled:
		try:
			if selinux_enabled:
				ret=selinux.secure_rename(src,dest)
			else:
				ret=os.rename(src,dest)
			renamefailed=0
		except Exception, e:
			import errno
			if e[0]!=errno.EXDEV:
				# Some random error.
				print "!!! Failed to move",src,"to",dest
				print "!!!",e
				return None
			# Invalid cross-device-link 'bind' mounted or actually Cross-Device
	if renamefailed:
		didcopy=0
		if S_ISREG(sstat[ST_MODE]):
			try: # For safety copy then move it over.
				if selinux_enabled:
					selinux.secure_copy(src,dest+"#new")
					selinux.secure_rename(dest+"#new",dest)
				else:
					shutil.copyfile(src,dest+"#new")
					os.rename(dest+"#new",dest)
				didcopy=1
			except Exception, e:
				print '!!! copy',src,'->',dest,'failed.'
				print "!!!",e
				return None
		else:
			#we don't yet handle special, so we need to fall back to /bin/mv
			if selinux_enabled:
				a=getstatusoutput("/bin/mv -c -f "+"'"+src+"' '"+dest+"'")
			else:
				a=getstatusoutput("/bin/mv -f "+"'"+src+"' '"+dest+"'")
				if a[0]!=0:
					print "!!! Failed to move special file:"
					print "!!! '"+src+"' to '"+dest+"'"
					print "!!!",a
					return None # failure
		try:
			if didcopy:
				lchown(dest,sstat[ST_UID],sstat[ST_GID])
				os.chmod(dest, S_IMODE(sstat[ST_MODE])) # Sticky is reset on chown
				os.unlink(src)
		except Exception, e:
			print "!!! Failed to chown/chmod/unlink in movefile()"
			print "!!!",dest
			print "!!!",e
			return None

	if newmtime:
		os.utime(dest,(newmtime,newmtime))
	else:
		os.utime(dest, (sstat[ST_ATIME], sstat[ST_MTIME]))
		newmtime=sstat[ST_MTIME]
	return newmtime

def perform_md5(x, calc_prelink=0):
	return perform_checksum(x, calc_prelink)[0]

def merge(mycat,mypkg,pkgloc,infloc,myroot,myebuild=None):
	mylink=dblink(mycat,mypkg,myroot)
	if not mylink.exists():
		mylink.create()
		#shell error code
	return mylink.merge(pkgloc,infloc,myroot,myebuild)
	
def unmerge(cat,pkg,myroot,mytrimworld=1):
	mylink=dblink(cat,pkg,myroot)
	if mylink.exists():
		mylink.unmerge(trimworld=mytrimworld)
	mylink.delete()

def relparse(myver):
	"converts last version part into three components"
	number=0
	p1=0
	p2=0
	mynewver=string.split(myver,"_")
	if len(mynewver)==2:
		#an endversion
		number=string.atof(mynewver[0])
		match=0
		for x in endversion_keys:
			elen=len(x)
			if mynewver[1][:elen] == x:
				match=1
				p1=endversion[x]
				try:
					p2=string.atof(mynewver[1][elen:])
				except:
					p2=0
				break
		if not match:	
			#normal number or number with letter at end
			divider=len(myver)-1
			if myver[divider:] not in "1234567890":
				#letter at end
				p1=ord(myver[divider:])
				number=string.atof(myver[0:divider])
			else:
				number=string.atof(myver)		
	else:
		#normal number or number with letter at end
		divider=len(myver)-1
		if myver[divider:] not in "1234567890":
			#letter at end
			p1=ord(myver[divider:])
			number=string.atof(myver[0:divider])
		else:
			number=string.atof(myver)  
	return [number,p1,p2]

#returns 1 if valid version string, else 0
# valid string in format: <v1>.<v2>...<vx>[a-z,_{endversion}[vy]]
# ververify doesn't do package rev.

vercache={}
def ververify(myorigval,silent=1):	
	try:
		return vercache[myorigval]
	except KeyError:
		pass
	if len(myorigval)==0:
		if not silent:
			print "!!! Name error: package contains empty \"-\" part."
		return 0
	myval=string.split(myorigval,'.')
	if len(myval)==0:
		if not silent:
			print "!!! Name error: empty version string."
		vercache[myorigval]=0
		return 0
	#all but the last version must be a numeric
	for x in myval[:-1]:
		if not len(x):
			if not silent:
				print "!!! Name error in",myorigval+": two decimal points in a row"
			vercache[myorigval]=0
			return 0
		try:
			foo=string.atoi(x)
		except:
			if not silent:
				print "!!! Name error in",myorigval+": \""+x+"\" is not a valid version component."
			vercache[myorigval]=0
			return 0
	if not len(myval[-1]):
			if not silent:
				print "!!! Name error in",myorigval+": two decimal points in a row"
			vercache[myorigval]=0
			return 0
	try:
		foo=string.atoi(myval[-1])
		vercache[myorigval]=1
		return 1
	except:
		pass
	#ok, our last component is not a plain number or blank, let's continue
	if myval[-1][-1] in string.lowercase:
		try:
			foo=string.atoi(myval[-1][:-1])
			return 1
			vercache[myorigval]=1
			# 1a, 2.0b, etc.
		except:
			pass
	#ok, maybe we have a 1_alpha or 1_beta2; let's see
	#ep="endpart"
	ep=string.split(myval[-1],"_")
	if len(ep)!=2:
		if not silent:
			print "!!! Name error in",myorigval
		vercache[myorigval]=0
		return 0
	try:
		foo=string.atoi(ep[0])
	except:
		#this needs to be numeric, i.e. the "1" in "1_alpha"
		if not silent:
			print "!!! Name error in",myorigval+": characters before _ must be numeric"
		vercache[myorigval]=0
		return 0
	for mye in endversion_keys:
		if ep[1][0:len(mye)]==mye:
			if len(mye)==len(ep[1]):
				#no trailing numeric; ok
				vercache[myorigval]=1
				return 1
			else:
				try:
					foo=string.atoi(ep[1][len(mye):])
					vercache[myorigval]=1
					return 1
				except:
					#if no endversions work, *then* we return 0
					pass	
	if not silent:
		print "!!! Name error in",myorigval
	vercache[myorigval]=0
	return 0

def isjustname(mypkg):
	myparts=string.split(mypkg,'-')
	for x in myparts:
		if ververify(x):
			return 0
	return 1

iscache={}
def isspecific(mypkg):
	"now supports packages with no category"
	try:
		return iscache[mypkg]
	except:
		pass
	mysplit=string.split(mypkg,"/")
	if not isjustname(mysplit[-1]):
			iscache[mypkg]=1
			return 1
	iscache[mypkg]=0
	return 0

# This function can be used as a package verification function, i.e.
# "pkgsplit("foo-1.2-1") will return None if foo-1.2-1 isn't a valid
# package (with version) name.	If it is a valid name, pkgsplit will
# return a list containing: [ pkgname, pkgversion(norev), pkgrev ].
# For foo-1.2-1, this list would be [ "foo", "1.2", "1" ].  For 
# Mesa-3.0, this list would be [ "Mesa", "3.0", "0" ].
pkgcache={}

def pkgsplit(mypkg,silent=1):
	try:
		return pkgcache[mypkg]
	except KeyError:
		pass
	myparts=string.split(mypkg,'-')
	if len(myparts)<2:
		if not silent:
			print "!!! Name error in",mypkg+": missing a version or name part."
		pkgcache[mypkg]=None
		return None
	for x in myparts:
		if len(x)==0:
			if not silent:
				print "!!! Name error in",mypkg+": empty \"-\" part."
			pkgcache[mypkg]=None
			return None
	#verify rev
	revok=0
	myrev=myparts[-1]
	if len(myrev) and myrev[0]=="r":
		try:
			string.atoi(myrev[1:])
			revok=1
		except: 
			pass
	if revok:
		if ververify(myparts[-2]):
			if len(myparts)==2:
				pkgcache[mypkg]=None
				return None
			else:
				for x in myparts[:-2]:
					if ververify(x):
						pkgcache[mypkg]=None
						return None
						#names can't have versiony looking parts
				myval=[string.join(myparts[:-2],"-"),myparts[-2],myparts[-1]]
				pkgcache[mypkg]=myval
				return myval
		else:
			pkgcache[mypkg]=None
			return None

	elif ververify(myparts[-1],silent):
		if len(myparts)==1:
			if not silent:
				print "!!! Name error in",mypkg+": missing name part."
			pkgcache[mypkg]=None
			return None
		else:
			for x in myparts[:-1]:
				if ververify(x):
					if not silent:
						print "!!! Name error in",mypkg+": multiple version parts."
					pkgcache[mypkg]=None
					return None
			myval=[string.join(myparts[:-1],"-"),myparts[-1],"r0"]
			pkgcache[mypkg]=myval
			return myval
	else:
		pkgcache[mypkg]=None
		return None

catcache={}
def catpkgsplit(mydata,silent=1):
	"returns [cat, pkgname, version, rev ]"
	try:
		return catcache[mydata]
	except KeyError:
		pass
	mysplit=mydata.split("/")
	p_split=None
	if len(mysplit)==1:
		retval=["null"]
		p_split=pkgsplit(mydata,silent)
	elif len(mysplit)==2:
		retval=[mysplit[0]]
		p_split=pkgsplit(mysplit[1],silent)
	if not p_split:
		catcache[mydata]=None
		return None
	retval.extend(p_split)
	catcache[mydata]=retval
	return retval

# vercmp:
# This takes two version strings and returns an integer to tell you whether
# the versions are the same, val1>val2 or val2>val1.
vcmpcache={}
def vercmp(val1,val2):
	if val1==val2:
		#quick short-circuit
		return 0
	valkey=val1+" "+val2
	try:
		return vcmpcache[valkey]
		try:
			return -vcmpcache[val2+" "+val1]
		except KeyError:
			pass
	except KeyError:
		pass
	
	# consider 1_p2 vc 1.1
	# after expansion will become (1_p2,0) vc (1,1)
	# then 1_p2 is compared with 1 before 0 is compared with 1
	# to solve the bug we need to convert it to (1,0_p2)
	# by splitting _prepart part and adding it back _after_expansion
	val1_prepart = val2_prepart = ''
	if val1.count('_'):
		val1, val1_prepart = val1.split('_', 1)
	if val2.count('_'):
		val2, val2_prepart = val2.split('_', 1)

	# replace '-' by '.'
	# FIXME: Is it needed? can val1/2 contain '-'?
	val1=string.split(val1,'-')
	if len(val1)==2:
		val1[0]=val1[0]+"."+val1[1]
	val2=string.split(val2,'-')
	if len(val2)==2:
		val2[0]=val2[0]+"."+val2[1]

	val1=string.split(val1[0],'.')
	val2=string.split(val2[0],'.')

	#add back decimal point so that .03 does not become "3" !
	for x in range(1,len(val1)):
		if val1[x][0] == '0' :
			val1[x]='.' + val1[x]
	for x in range(1,len(val2)):
		if val2[x][0] == '0' :
			val2[x]='.' + val2[x]

	# extend version numbers
	if len(val2)<len(val1):
		val2.extend(["0"]*(len(val1)-len(val2)))
	elif len(val1)<len(val2):
		val1.extend(["0"]*(len(val2)-len(val1)))

	# add back _prepart tails
	if val1_prepart:
		val1[-1] += '_' + val1_prepart
	if val2_prepart:
		val2[-1] += '_' + val2_prepart
	#The above code will extend version numbers out so they
	#have the same number of digits.
	for x in range(0,len(val1)):
		cmp1=relparse(val1[x])
		cmp2=relparse(val2[x])
		for y in range(0,3):
			myret=cmp1[y]-cmp2[y]
			if myret != 0:
				vcmpcache[valkey]=myret
				return myret
	vcmpcache[valkey]=0
	return 0


def pkgcmp(pkg1,pkg2):
	"""if returnval is less than zero, then pkg2 is newer than pkg1, zero if equal and positive if older."""
	mycmp=vercmp(pkg1[1],pkg2[1])
	if mycmp>0:
		return 1
	if mycmp<0:
		return -1
	r1=string.atoi(pkg1[2][1:])
	r2=string.atoi(pkg2[2][1:])
	if r1>r2:
		return 1
	if r2>r1:
		return -1
	return 0

def dep_parenreduce(mysplit,mypos=0):
	"Accepts a list of strings, and converts '(' and ')' surrounded items to sub-lists"
	while (mypos<len(mysplit)): 
		if (mysplit[mypos]=="("):
			firstpos=mypos
			mypos=mypos+1
			while (mypos<len(mysplit)):
				if mysplit[mypos]==")":
					mysplit[firstpos:mypos+1]=[mysplit[firstpos+1:mypos]]
					mypos=firstpos
					break
				elif mysplit[mypos]=="(":
					#recurse
					mysplit=dep_parenreduce(mysplit,mypos)
				mypos=mypos+1
		mypos=mypos+1
	return mysplit

def dep_opconvert(mysplit,myuse):
	"Does dependency operator conversion"
	
	mypos=0
	newsplit=[]
	while mypos<len(mysplit):
		if type(mysplit[mypos])==types.ListType:
			newsplit.append(dep_opconvert(mysplit[mypos],myuse))
			mypos += 1
		elif mysplit[mypos]==")":
			#mismatched paren, error
			return None
		elif mysplit[mypos]=="||":
			if ((mypos+1)>=len(mysplit)) or (type(mysplit[mypos+1])!=types.ListType):
				# || must be followed by paren'd list
				return None
			try:
				mynew=dep_opconvert(mysplit[mypos+1],myuse)
			except Exception, e:
				print "!!! Unable to satisfy OR dependency:",string.join(mysplit," || ")
				raise e
			mynew[0:0]=["||"]
			newsplit.append(mynew)
			mypos += 2
		elif mysplit[mypos][-1]=="?":
			#uses clause, i.e "gnome? ( foo bar )"
			#this is a quick and dirty hack so that repoman can enable all USE vars:
			if (len(myuse)==1) and (myuse[0]=="*"):
				# enable it even if it's ! (for repoman) but kill it if it's
				# an arch variable that isn't for this arch. XXX Sparc64?
				if (mysplit[mypos][:-1] not in settings.usemask) or \
						(mysplit[mypos][:-1]==settings["ARCH"]):
					enabled=1
				else:
					enabled=0
			else:
				if mysplit[mypos][0]=="!":
					myusevar=mysplit[mypos][1:-1]
					if myusevar in myuse:
						enabled=0
					else:
						enabled=1
				else:
					myusevar=mysplit[mypos][:-1]
					if myusevar in myuse:
						enabled=1
					else:
						enabled=0
			if (mypos+2<len(mysplit)) and (mysplit[mypos+2]==":"):
				#colon mode
				if enabled:
					#choose the first option
					if type(mysplit[mypos+1])==types.ListType:
						newsplit.append(dep_opconvert(mysplit[mypos+1],myuse))
					else:
						newsplit.append(mysplit[mypos+1])
				else:
					#choose the alternate option
					if type(mysplit[mypos+1])==types.ListType:
						newsplit.append(dep_opconvert(mysplit[mypos+3],myuse))
					else:
						newsplit.append(mysplit[mypos+3])
				mypos += 4
			else:
				#normal use mode
				if enabled:
					if type(mysplit[mypos+1])==types.ListType:
						newsplit.append(dep_opconvert(mysplit[mypos+1],myuse))
					else:
						newsplit.append(mysplit[mypos+1])
				#otherwise, continue.
				mypos += 2
		else:
			#normal item
			newsplit.append(mysplit[mypos])
			mypos += 1
	return newsplit

def dep_eval(deplist):
	if len(deplist)==0:
		return 1
	if deplist[0]=="||":
		#or list; we just need one "1"
		for x in deplist[1:]:
			if type(x)==types.ListType:
				if dep_eval(x)==1:
					return 1
			elif x==1:
					return 1
		return 0
	else:
		for x in deplist:
			if type(x)==types.ListType:
				if dep_eval(x)==0:
					return 0
			elif x==0 or x==2:
				return 0
		return 1

def dep_zapdeps(unreduced,reduced):
	"""Takes an unreduced and reduced deplist and removes satisfied dependencies.
	Returned deplist contains steps that must be taken to satisfy dependencies."""
	if unreduced==[]:
		return None
	if unreduced[0]=="||":
		if dep_eval(reduced):
			#deps satisfied, return None
			return None
		else:
			#try to satisfy first dep
			return unreduced[1]
	else:
		if dep_eval(reduced):
			#deps satisfied, return None
			return None
		else:
			returnme=[]
			x=0
			while x<len(reduced):
				if type(reduced[x])==types.ListType:
					myresult=dep_zapdeps(unreduced[x],reduced[x])
					if myresult:
						returnme.append(myresult)
				else:
					if reduced[x]==0:
						returnme.append(unreduced[x])
				x += 1
			return returnme

def dep_listcleanup(deplist):
	"remove unnecessary clutter from deplists.  Remove multiple list levels, empty lists"
	newlist=[]
	if (len(deplist)==1):
		#remove multiple-depth lists
		if (type(deplist[0])==types.ListType):
			for x in deplist[0]:
				if type(x)==types.ListType:
					if len(x)!=0:
						newlist.append(dep_listcleanup(x))
				else:
					newlist.append(x)
		else:
			#unembed single nodes
			newlist.append(deplist[0])
	else:
		for x in deplist:
			if type(x)==types.ListType:
				if len(x)==1:
					newlist.append(x[0])
				elif len(x)!=0:
					newlist=newlist+dep_listcleanup(x)
			else:
				newlist.append(x)
	return newlist
	
# gets virtual package settings

def getvirtuals(myroot):
	myvirts={}
	myvirtfiles=[]
	if profiledir:
		myvirtfiles=[profiledir+"/virtuals"]
	myvirtfiles.append(root+"/var/cache/edb/virtuals")
	for myvirtfn in myvirtfiles:
		if not os.path.exists(myvirtfn):
			continue
		myfile=open(myvirtfn)
		mylines=myfile.readlines()
		for x in mylines:
			mysplit=string.split(x)
			if len(mysplit)<2:
				#invalid line
				continue
			myvirts[mysplit[0]]=mysplit[1]
	return myvirts

def dep_getjiggy(mydep):
	pos=0
	# first, we fill in spaces where needed (for "()[]" chars)
	while pos<len(mydep):
		if (mydep[pos] in "()[]"):
			if (pos>0) and (mydep[pos-1]!=" "):
				mydep=mydep[0:pos]+" "+mydep[pos:]
				pos += 1
			if (pos+1<len(mydep)) and (mydep[pos+1]!=" "):
				mydep=mydep[0:pos+1]+" "+mydep[pos+1:]
				pos += 1
		pos += 1
	# next, we split our dependency string into tokens
	mysplit=mydep.split()
	# next, we parse our tokens and create a list-based dependency structure
	return dep_parenreduce(mysplit)

def dep_getkey(mydep):
	if not len(mydep):
		return mydep
	if mydep[0]=="*":
		mydep=mydep[1:]
	if mydep[-1]=="*":
		mydep=mydep[:-1]
	if mydep[:2] in [ ">=", "<=" ]:
		mydep=mydep[2:]
	elif mydep[:1] in "=<>~!":
		mydep=mydep[1:]
	if isspecific(mydep):
		mysplit=catpkgsplit(mydep)
		if not mysplit:
			return mydep
		return mysplit[0]+"/"+mysplit[1]
	else:
		return mydep

def dep_getcpv(mydep):
	if not len(mydep):
		return mydep
	if mydep[0]=="*":
		mydep=mydep[1:]
	if mydep[-1]=="*":
		mydep=mydep[:-1]
	if mydep[:2] in [ ">=", "<=" ]:
		mydep=mydep[2:]
	elif mydep[:1] in "=<>~!":
		mydep=mydep[1:]
	return mydep

def cpv_getkey(mycpv):
	myslash=mycpv.split("/")
	mysplit=pkgsplit(myslash[-1])
	mylen=len(myslash)
	if mylen==2:
		return myslash[0]+"/"+mysplit[0]
	elif mylen==1:
		return mysplit[0]
	else:
		return mysplit

def key_expand(mykey,mydb=None):
	mysplit=mykey.split("/")
	if len(mysplit)==1:
		if mydb and type(mydb)==types.InstanceType:
			for x in categories:
				if mydb.cp_list(x+"/"+mykey):
					return x+"/"+mykey
			if virts_p.has_key(mykey):
				return(virts_p[mykey])
		return "null/"+mykey
	elif mydb:
		if type(mydb)==types.InstanceType:
			if (not mydb.cp_list(mykey)) and virts and virts.has_key(mykey):
				return virts[mykey]
		return mykey

def cpv_expand(mycpv,mydb=None):
	myslash=mycpv.split("/")
	mysplit=pkgsplit(myslash[-1])
	if len(myslash)==2:
		if mysplit:
			mykey=myslash[0]+"/"+mysplit[0]
		else:
			mykey=mycpv
		if mydb:
			if type(mydb)==types.InstanceType:
				if (not mydb.cp_list(mykey)) and virts and virts.has_key(mykey):
					mykey=virts[mykey]
			#we only perform virtual expansion if we are passed a dbapi
	else:
		#specific cpv, no category, ie. "foo-1.0"
		if mysplit:
			myp=mysplit[0]
		else:
			# "foo" ?
			myp=mycpv
		mykey=None
		if mydb:
			for x in categories:
				if mydb.cp_list(x+"/"+myp):
					mykey=x+"/"+myp
		if not mykey and type(mydb)!=types.ListType:
			if virts_p.has_key(myp):
				mykey=virts_p[myp]
			#again, we only perform virtual expansion if we have a dbapi (not a list)				
		if not mykey:
			mykey="null/"+myp
	if mysplit:
		if mysplit[2]=="r0":
			return mykey+"-"+mysplit[1]
		else:
			return mykey+"-"+mysplit[1]+"-"+mysplit[2]
	else:
		return mykey

def dep_transform(mydep,oldkey,newkey):
	origdep=mydep
	if not len(mydep):
		return mydep
	if mydep[0]=="*":
		mydep=mydep[1:]
	prefix=""
	postfix=""
	if mydep[-1]=="*":
		mydep=mydep[:-1]
		postfix="*"
	if mydep[:2] in [ ">=", "<=" ]:
		prefix=mydep[:2]
		mydep=mydep[2:]
	elif mydep[:1] in "=<>~!":
		prefix=mydep[:1]
		mydep=mydep[1:]
	if mydep==oldkey:
		return prefix+newkey+postfix
	else:
		return origdep

def dep_expand(mydep,mydb=None):
	if not len(mydep):
		return mydep
	if mydep[0]=="*":
		mydep=mydep[1:]
	prefix=""
	postfix=""
	if mydep[-1]=="*":
		mydep=mydep[:-1]
		postfix="*"
	if mydep[:2] in [ ">=", "<=" ]:
		prefix=mydep[:2]
		mydep=mydep[2:]
	elif mydep[:1] in "=<>~!":
		prefix=mydep[:1]
		mydep=mydep[1:]
	return prefix+cpv_expand(mydep,mydb)+postfix

def dep_check(depstring,mydbapi,use="yes",mode=None,myuse=None):
	"""Takes a depend string and parses the condition."""
	global usesplit

	if use=="all":
		#enable everything (for repoman)
		myusesplit=["*"]
	elif use=="yes":
		if myuse==None:
			#default behavior
			myusesplit=usesplit
		else:
			myusesplit = string.split(myuse)
			# We've been given useflags to use.
			#print "USE FLAGS PASSED IN."
			#print myuse
			#if "bindist" in myusesplit:
			#	print "BINDIST is set!"
			#else:
			#	print "BINDIST NOT set."
	else:
		#we are being run by autouse(), don't consult USE vars yet.
		myusesplit=[]
		
	mysplit=string.split(depstring)
	#convert parenthesis to sublists
	mysplit=dep_parenreduce(mysplit)
	#mysplit can't be None here, so we don't need to check
	mysplit=dep_opconvert(mysplit,myusesplit)
	#if mysplit==None, then we have a parse error (paren mismatch or misplaced ||)
	#up until here, we haven't needed to look at the database tree
	
	if mysplit==None:
		return [0,"Parse Error (parenthesis mismatch?)"]
	elif mysplit==[]:
		#dependencies were reduced to nothing
		return [1,[]]
	mysplit2=mysplit[:]
	mysplit2=dep_wordreduce(mysplit2,mydbapi,mode)
	if mysplit2==None:
		return [0,"Invalid token"]
	myeval=dep_eval(mysplit2)
	if myeval:
		return [1,[]]
	else:
		mylist=flatten(dep_listcleanup(dep_zapdeps(mysplit,mysplit2)))
		#remove duplicates
		mydict={}
		for x in mylist:
			mydict[x]=1
		return [1,mydict.keys()]

def dep_wordreduce(mydeplist,mydbapi,mode):
	"Reduces the deplist to ones and zeros"
	mypos=0
	deplist=mydeplist[:]
	while mypos<len(deplist):
		if type(deplist[mypos])==types.ListType:
			#recurse
			deplist[mypos]=dep_wordreduce(deplist[mypos],mydbapi,mode)
		elif deplist[mypos]=="||":
			pass
		else:
			if mode:
				mydep=mydbapi.xmatch(mode,deplist[mypos])
			else:
				mydep=mydbapi.match(deplist[mypos])
			if mydep!=None:
				deplist[mypos]=(len(mydep)>=1)
			else:
				#encountered invalid string
				return None
		mypos=mypos+1
	return deplist

class packagetree:
	def __init__(self,virtual,clone=None):
		if clone:
			self.tree=clone.tree.copy()
			self.populated=clone.populated
			self.virtual=clone.virtual
			self.dbapi=None
		else:
			self.tree={}
			self.populated=0
			self.virtual=virtual
			self.dbapi=None
		
	def resolve_key(self,mykey):
		return key_expand(mykey,self.dbapi)
	
	def dep_nomatch(self,mypkgdep):
		mykey=dep_getkey(mypkgdep)
		nolist=self.dbapi.cp_list(mykey)
		mymatch=self.dbapi.match(mypkgdep)
		if not mymatch:
			return nolist
		for x in mymatch:
			if x in nolist:
				nolist.remove(x)
		return nolist

	def depcheck(self,mycheck,use="yes",myusesplit=None):
		return dep_check(mycheck,self.dbapi,use=use,myusesplit=myusesplit)

	def populate(self):
		"populates the tree with values"
		populated=1
		pass

def best(mymatches):
	"accepts None arguments; assumes matches are valid."
	global bestcount
	if mymatches==None:
		return "" 
	if not len(mymatches):
		return "" 
	bestmatch=mymatches[0]
	p2=catpkgsplit(bestmatch)[1:]
	for x in mymatches[1:]:
		p1=catpkgsplit(x)[1:]
		if pkgcmp(p1,p2)>0:
			bestmatch=x
			p2=catpkgsplit(bestmatch)[1:]
	return bestmatch		

class portagetree:
	def __init__(self,root="/",virtual=None,clone=None):
		global portdb
		if clone:
			self.root=clone.root
			self.portroot=clone.portroot
			self.pkglines=clone.pkglines
		else:
			self.root=root
			self.portroot=settings["PORTDIR"]
			self.virtual=virtual
			self.dbapi=portdb

	def dep_bestmatch(self,mydep):
		"compatibility method"
		mymatch=self.dbapi.xmatch("bestmatch-visible",mydep)
		if mymatch==None:
			return ""
		return mymatch

	def dep_match(self,mydep):
		"compatibility method"
		mymatch=self.dbapi.xmatch("match-visible",mydep)
		if mymatch==None:
			return []
		return mymatch

	def exists_specific(self,cpv):
		return self.dbapi.cpv_exists(cpv)

	def getallnodes(self):
		"""new behavior: these are all *unmasked* nodes.  There may or may not be available
		masked package for nodes in this nodes list."""
		return self.dbapi.cp_all()

	def getname(self,pkgname):
		"returns file location for this particular package (DEPRECATED)"
		if not pkgname:
			return ""
		mysplit=string.split(pkgname,"/")
		psplit=pkgsplit(mysplit[1])
		return self.portroot+"/"+mysplit[0]+"/"+psplit[0]+"/"+mysplit[1]+".ebuild"

	def resolve_specific(self,myspec):
		cps=catpkgsplit(myspec)
		if not cps:
			return None
		mykey=key_expand(cps[0]+"/"+cps[1],self.dbapi)
		mykey=mykey+"-"+cps[2]
		if cps[3]!="r0":
			mykey=mykey+"-"+cps[3]
		return mykey

	def depcheck(self,mycheck,use="yes",myusesplit=None):
		return dep_check(mycheck,self.dbapi,use=use,myusesplit=myusesplit)


class dbapi:
	def __init__(self):
		pass
	
	def cp_list(self,cp):
		return

	def aux_get(self,mycpv,mylist):
		"stub code for returning auxiliary db information, such as SLOT, DEPEND, etc."
		'input: "sys-apps/foo-1.0",["SLOT","DEPEND","HOMEPAGE"]'
		'return: ["0",">=sys-libs/bar-1.0","http://www.foo.com"] or [] if mycpv not found'
		pass

	def match(self,origdep):
		mydep=dep_expand(origdep,self)
		mykey=dep_getkey(mydep)
		mycat=mykey.split("/")[0]
		return self.match2(mydep,mykey,self.cp_list(mykey))
		
	def match2(self,mydep,mykey,mylist):
		"Notable difference to our match() function is that we don't return None. Ever.  Just empty list."
		mycpv=dep_getcpv(mydep)
		if isspecific(mycpv):
			cp_key=catpkgsplit(mycpv)
			if cp_key==None:
				return []
		else:
			cp_key=None
		#Otherwise, this is a special call; we can only select out of the ebuilds specified in the specified mylist
		if (mydep[0]=="="):
			if cp_key==None:
				return []
			if mydep[-1]=="*":
				#example: "=sys-apps/foo-1.0*"
				try:
					#now, we grab the version of our dependency...
					mynewsplit=string.split(cp_key[2],'.')
					#split it...
					mynewsplit[-1]=`int(mynewsplit[-1])+1`
					#and increment the last digit of the version by one.
					#We don't need to worry about _pre and friends because they're not supported with '*' deps.
					new_v=string.join(mynewsplit,".")+"_alpha0"
					#new_v will be used later in the code when we do our comparisons using pkgcmp()
				except:
					#erp, error.
					return [] 
				mynodes=[]
				cmp1=cp_key[1:]
				cmp1[1]=cmp1[1]+"_alpha0"
				cmp2=[cp_key[1],new_v,"r0"]
				for x in mylist:
					cp_x=catpkgsplit(x)
					if cp_x==None:
						#hrm, invalid entry.  Continue.
						continue
					#skip entries in our list that do not have matching categories
					if cp_key[0]!=cp_x[0]:
						continue
					# ok, categories match. Continue to next step.	
					if ((pkgcmp(cp_x[1:],cmp1)>=0) and (pkgcmp(cp_x[1:],cmp2)<0)):
						# entry is >= the version in specified in our dependency, and <= the version in our dep + 1; add it:
						mynodes.append(x)
				return mynodes
			else:
				# Does our stripped key appear literally in our list?  If so, we have a match; if not, we don't.
				if mycpv in mylist:
					return [mycpv]
				else:
					return []
		elif (mydep[0]==">") or (mydep[0]=="<"):
			if cp_key==None:
				return []
			if (len(mydep)>1) and (mydep[1]=="="):
				cmpstr=mydep[0:2]
			else:
				cmpstr=mydep[0]
			mynodes=[]
			for x in mylist:
				cp_x=catpkgsplit(x)
				if cp_x==None:
					#invalid entry; continue.
					continue
				if cp_key[0]!=cp_x[0]:
					continue
				if eval("pkgcmp(cp_x[1:],cp_key[1:])"+cmpstr+"0"):
					mynodes.append(x)
			return mynodes
		elif mydep[0]=="~":
			if cp_key==None:
				return []
			myrev=-1
			for x in mylist:
				cp_x=catpkgsplit(x)
				if cp_x==None:
					#invalid entry; continue
					continue
				if cp_key[0]!=cp_x[0]:
					continue
				if cp_key[2]!=cp_x[2]:
					#if version doesn't match, skip it
					continue
				if string.atoi(cp_x[3][1:])>myrev:
					myrev=string.atoi(cp_x[3][1:])
					mymatch=x
			if myrev==-1:
				return []
			else:
				return [mymatch]
		elif cp_key==None:
			if mydep[0]=="!":
				return []
				#we check ! deps in emerge itself, so always returning [] is correct.
			mynodes=[]
			cp_key=mycpv.split("/")
			for x in mylist:
				cp_x=catpkgsplit(x)
				if cp_x==None:
					#invalid entry; continue
					continue
				if cp_key[0]!=cp_x[0]:
					continue
				if cp_key[1]!=cp_x[1]:
					continue
				mynodes.append(x)
			return mynodes
		else:
			return []


class fakedbapi(dbapi):
	"This is a dbapi to use for the emptytree function.  It's empty, but things can be added to it."
	def __init__(self):
		self.cpvdict={}
		self.cpdict={}

	#this needs to be here for emerge --emptytree that uses fakedbapi for /var
	#we should remove this requirement soon.
	def counter_tick(self):
		return counter_tick_core("/")
	
	def cpv_exists(self,mycpv):
		return self.cpvdict.has_key(mycpv)
	
	def cp_list(self,mycp):
		if not self.cpdict.has_key(mycp):
			return []
		else:
			return self.cpdict[mycp]

	def cp_all(self):
		returnme=[]
		for x in self.cpdict.keys():
			returnme.extend(self.cpdict[x])
		return returnme

	def cpv_inject(self,mycpv):
		"""Adds a cpv from the list of available packages."""
		mycp=cpv_getkey(mycpv)
		self.cpvdict[mycpv]=1
		if not self.cpdict.has_key(mycp):
			self.cpdict[mycp]=[]
		if not mycpv in self.cpdict[mycp]:
			self.cpdict[mycp].append(mycpv)

	#def cpv_virtual(self,oldcpv,newcpv):
	#	"""Maps a cpv to the list of available packages."""
	#	mycp=cpv_getkey(newcpv)
	#	self.cpvdict[newcpv]=1
	#	if not self.virtdict.has_key(mycp):
	#		self.virtdict[mycp]=[]
	#	if not mycpv in self.virtdict[mycp]:
	#		self.virtdict[mycp].append(oldcpv)
	#	cpv_remove(oldcpv)

	def cpv_remove(self,mycpv):
		"""Removes a cpv from the list of available packages."""
		mycp=cpv_getkey(mycpv)
		if self.cpvdict.has_key(mycpv):
			del	self.cpvdict[mycpv]
		if not self.cpdict.has_key(mycp):
			return
		while mycpv in self.cpdict[mycp]:
			del self.cpdict[mycp][self.cpdict[mycp].index(mycpv)]
		if not len(self.cpdict[mycp]):
			del self.cpdict[mycp]

def get_counter_tick_core(myroot):
	return counter_tick_core(myroot,0)+1
def counter_tick_core(myroot,incrementing=1):
		"This method will grab the next COUNTER value and record it back to the global file.  Returns new counter value."
		cpath=myroot+"var/cache/edb/counter"
		changed=0

		#We write our new counter value to a new file that gets moved into
		#place to avoid filesystem corruption on XFS (unexpected reboot.)
		if os.path.exists(cpath):
			cfile=open(cpath, "r")
			try:
				counter=long(cfile.readline())
			except (ValueError,OverflowError):
				try:
					counter=long(commands.getoutput("for FILE in $(find /var/db/pkg -type f -name COUNTER); do cat ${FILE}; echo; done | sort -n | tail -n1 | tr -d '\n'"))
					print "portage: COUNTER was corrupted; resetting to value of",counter
					changed=1
				except (ValueError,OverflowError):
					print red("portage:")+" COUNTER data is corrupt in pkg db. The values need to be"
					print red("portage:")+" corrected/normalized so that portage can operate properly."
					print red("portage:")+" A simple solution is not yet available so try #gentoo on IRC."
					sys.exit(2)
			cfile.close()
		else:
			try:
				counter=long(commands.getoutput("for FILE in $(find /var/db/pkg -type f -name COUNTER); do cat ${FILE}; echo; done | sort -n | tail -n1 | tr -d '\n'"))
				print red("portage:")+" Global counter missing. Regenerated from counter files to:",counter
			except:
				print red("portage:")+" Initializing global counter."
				counter=long(0)
			changed=1
		if incrementing or changed:
			#increment counter
			counter += 1
			# update new global counter file
			newcpath=cpath+".new"
			newcfile=open(newcpath,"w")
			newcfile.write(str(counter))
			newcfile.close()
			# now move global counter file into place
			os.rename(newcpath,cpath)
		return counter
	
cptot=0
class vardbapi(dbapi):
	def __init__(self,root):
		self.root=root
		#cache for category directory mtimes
		self.mtdircache={}
		#cache for dependency checks
		self.matchcache={}
		#cache for cp_list results
		self.cpcache={}	
		self.blockers=None

	def cpv_exists(self,mykey):
		"Tells us whether an actual ebuild exists on disk (no masking)"
		return os.path.exists(self.root+"var/db/pkg/"+mykey)

	def counter_tick(self):
		return counter_tick_core(self.root)

	def cpv_counter(self,mycpv):
		"This method will grab the next COUNTER value and record it back to the global file.  Returns new counter value."
		cpath=self.root+"var/db/pkg/"+mycpv+"/COUNTER"

		#We write our new counter value to a new file that gets moved into
		#place to avoid filesystem corruption on XFS (unexpected reboot.)
		corrupted=0
		if os.path.exists(cpath):
			cfile=open(cpath, "r")
			try:
				counter=long(cfile.readline())
			except ValueError:
				print "portage: COUNTER for",mycpv,"was corrupted; resetting to value of 0"
				counter=long(0)
				corrupted=1
			cfile.close()
		else:
			counter=long(0)
		if corrupted:
			newcpath=cpath+".new"
			# update new global counter file
			newcfile=open(newcpath,"w")
			newcfile.write(str(counter))
			newcfile.close()
			# now move global counter file into place
			os.rename(newcpath,cpath)
		return counter
	
	def cpv_inject(self,mycpv):
		"injects a real package into our on-disk database; assumes mycpv is valid and doesn't already exist"
		os.makedirs(self.root+"var/db/pkg/"+mycpv)	
		counter=db[self.root]["vartree"].dbapi.counter_tick()
		# write local package counter so that emerge clean does the right thing
		lcfile=open(self.root+"var/db/pkg/"+mycpv+"/COUNTER","w")
		lcfile.write(str(counter))
		lcfile.close()

	def move_ent(self,mylist):
		origcp=mylist[1]
		newcp=mylist[2]
		origmatches=self.cp_list(origcp)
		if not origmatches:
			return
		for mycpv in origmatches:
			mycpsplit=catpkgsplit(mycpv)
			mynewcpv=newcp+"-"+mycpsplit[2]
			mynewcat=newcp.split("/")[0]
			if mycpsplit[3]!="r0":
				mynewcpv += "-"+mycpsplit[3]
			origpath=self.root+"var/db/pkg/"+mycpv
			if not os.path.exists(origpath):
				continue
			sys.stderr.write("@")
			sys.stderr.flush()
			if not os.path.exists(self.root+"var/db/pkg/"+mynewcat):
				#create the directory
				os.makedirs(self.root+"var/db/pkg/"+mynewcat)	
			newpath=self.root+"var/db/pkg/"+mynewcpv
			if os.path.exists(newpath):
				#dest already exists; keep this puppy where it is.
				continue
			spawn("/bin/mv "+origpath+" "+newpath, free=1)
			
			catfile=open(newpath+"/CATEGORY", "w")
			catfile.write(mynewcat+"\n")
			catfile.close()

		mycmd='/usr/lib/portage/bin/fixdbentries'
		mycmd=mycmd+' "'+origcp+'" '
		mycmd=mycmd+' "'+newcp+'" '
		mycmd=mycmd+' "'+self.root+"var/db/pkg/"+'" '
		spawn(mycmd,free=1)
	
	def cp_list(self,mycp):
		mysplit=mycp.split("/")
		try:
			mystat=os.stat(self.root+"var/db/pkg/"+mysplit[0])[ST_MTIME]
		except OSError:
			mystat=0
		if self.cpcache.has_key(mycp):
			cpc=self.cpcache[mycp]
			if cpc[0]==mystat:
				return cpc[1]
		list=listdir(self.root+"var/db/pkg/"+mysplit[0])

		if (list==None):
			return []
		returnme=[]
		for x in list:
			ps=pkgsplit(x)
			if not ps:
				print "!!! Invalid db entry:",self.root+"var/db/pkg/"+mysplit[0]+"/"+x
				continue
			if len(mysplit) > 1:
				if ps[0]==mysplit[1]:
					returnme.append(mysplit[0]+"/"+x)
		self.cpcache[mycp]=[mystat,returnme]
		return returnme

	def cpv_all(self):
		returnme=[]
		for x in categories:
			for y in listdir(self.root+"var/db/pkg/"+x,EmptyOnError=1):
				returnme += [x+"/"+y]
		return returnme

	def cp_all(self):
		returnme=[]
		mylist = self.cpv_all()
		for y in mylist:
			mysplit=catpkgsplit(y)
			if not mysplit:
				print "!!! Invalid db entry:",self.root+"var/db/pkg/"+y
				continue
			mykey=mysplit[0]+"/"+mysplit[1]
			if not mykey in returnme:
				returnme.append(mykey)
		return returnme

	def checkblockers(self,origdep):
		pass

	def match(self,origdep):
		"caching match function"
		mydep=dep_expand(origdep,self)
		mykey=dep_getkey(mydep)
		mycat=mykey.split("/")[0]
		try:
			curmtime=os.stat(self.root+"var/db/pkg/"+mycat)
		except:
			curmtime=0
		if self.matchcache.has_key(mydep):
			if self.mtdircache[mycat]==curmtime:
				return self.matchcache[mydep]
		#generate new cache entry
		mymatch=self.match2(mydep,mykey,self.cp_list(mykey))
		self.mtdircache[mycat]=curmtime
		self.matchcache[mydep]=mymatch
		return mymatch
		

class vartree(packagetree):
	"this tree will scan a var/db/pkg database located at root (passed to init)"
	def __init__(self,root="/",virtual=None,clone=None):
		if clone:
			self.root=clone.root
			self.dbapi=clone.dbapi
			self.populated=1
		else:
			self.root=root
			self.dbapi=vardbapi(self.root)
			self.populated=1

	def zap(self,mycpv):
		return

	def inject(self,mycpv):
		return
		
	def get_provide(self,mycpv):
		myprovides=[]
		try:
			mylines = grabfile(self.root+"var/db/pkg/"+mycpv+"/PROVIDE")
			if mylines:
				for myprovide in string.split(string.join(mylines)):
					mys = catpkgsplit(myprovide)
					if not mys:
						mys = string.split(myprovide, "/")
					myprovides += [mys[0] + "/" + mys[1]]
			return myprovides
		except Exception, e:
			print "mylines:",mylines
			print e
			return []

	def get_all_provides(self):
		myprovides = {}
		for node in self.getallcpv():
			for mykey in self.get_provide(node):
				if myprovides.has_key(mykey):
					myprovides[mykey] += [node]
				else:
					myprovides[mykey]  = [node]
		return myprovides
	
	def dep_bestmatch(self,mydep):
		"compatibility method -- all matches, not just visible ones"
		#mymatch=best(match(dep_expand(mydep,self.dbapi),self.dbapi))
		mymatch=best(self.dbapi.match(dep_expand(mydep,self.dbapi)))
		if mymatch==None:
			return ""
		else:
			return mymatch
			
	def dep_match(self,mydep):
		"compatibility method -- we want to see all matches, not just visible ones"
		#mymatch=match(mydep,self.dbapi)
		mymatch=self.dbapi.match(mydep)
		if mymatch==None:
			return []
		else:
			return mymatch

	def exists_specific(self,cpv):
		return self.dbapi.cpv_exists(cpv)

	def getallcpv(self):
		"""temporary function, probably to be renamed --- Gets a list of all
		category/package-versions installed on the system."""
		return self.dbapi.cpv_all()
	
	def getallnodes(self):
		"""new behavior: these are all *unmasked* nodes.  There may or may not be available
		masked package for nodes in this nodes list."""
		return self.dbapi.cp_all()

	def exists_specific_cat(self,cpv):
		cpv=key_expand(cpv,self.dbapi)
		a=catpkgsplit(cpv)
		if not a:
			return 0
		mylist=listdir(self.root+"var/db/pkg/"+a[0],EmptyOnError=1)
		for x in mylist:
			b=pkgsplit(x)
			if not b:
				print "!!! Invalid db entry:",self.root+"var/db/pkg/"+a[0]+"/"+x
				continue
			if a[1]==b[0]:
				return 1
		return 0
			
	def getebuildpath(self,fullpackage):
		cat,package=fullpackage.split("/")
		return self.root+"var/db/pkg/"+fullpackage+"/"+package+".ebuild"

	def getnode(self,mykey):
		mykey=key_expand(mykey,self.dbapi)
		if not mykey:
			return []
		mysplit=mykey.split("/")
		mydirlist=listdir(self.root+"var/db/pkg/"+mysplit[0],EmptyOnError=1)
		returnme=[]
		for x in mydirlist:
			mypsplit=pkgsplit(x)
			if not mypsplit:
				print "!!! Invalid db entry:",self.root+"var/db/pkg/"+mysplit[0]+"/"+x
				continue
			if mypsplit[0]==mysplit[1]:
				appendme=[mysplit[0]+"/"+x,[mysplit[0],mypsplit[0],mypsplit[1],mypsplit[2]]]
				returnme.append(appendme)
		return returnme

	
	def getslot(self,mycatpkg):
		"Get a slot for a catpkg; assume it exists."
		try:
			myslotfile=open(self.root+"var/db/pkg/"+mycatpkg+"/SLOT","r")
			myslotvar=string.split(myslotfile.readline())
			myslotfile.close()
			if len(myslotvar):
				return myslotvar[0]
		except:
			pass
		return ""
	
	def hasnode(self,mykey):
		"""Does the particular node (cat/pkg key) exist?"""
		mykey=key_expand(mykey,self.dbapi)
		mysplit=mykey.split("/")
		mydirlist=listdir(self.root+"var/db/pkg/"+mysplit[0],EmptyOnError=1)
		for x in mydirlist:
			mypsplit=pkgsplit(x)
			if not mypsplit:
				print "!!! Invalid db entry:",self.root+"var/db/pkg/"+mysplit[0]+"/"+x
				continue
			if mypsplit[0]==mysplit[1]:
				return 1
		return 0
	
	def populate(self):
		self.populated=1

# ----------------------------------------------------------------------------
def eclass(myeclass=None,mycpv=None,mymtime=None):
	"""Caches and retrieves information about ebuilds that use eclasses
	Returns: Is the ebuild current with the eclass? (true/false)"""
	global mtimedb
	#print "eclass("+str(myeclass)+","+str(mycpv)+","+str(mymtime)+")"
	
	if not mtimedb:
		mtimedb={}
	if not mtimedb.has_key("eclass") or type(mtimedb["eclass"]) is not types.DictType:
		mtimedb["eclass"]={}
		mtimedb["packages"]=[]
	if not mtimedb.has_key("packages") or type(mtimedb["packages"]) is not types.ListType:
		mtimedb["packages"]=[]
	
	if not mtimedb.has_key("starttime") or (mtimedb["starttime"]!=starttime):
		mtimedb["starttime"]=starttime
		# Update the cache
		ec_overlays = suffix_array(string.split(settings["PORTDIR_OVERLAY"]), "/eclass")
		for x in [settings["PORTDIR"]+"/eclass"]+ec_overlays:
			if x and os.path.exists(x):
				dirlist = listdir(x)
				for y in dirlist:
					if y[-len(".eclass"):]==".eclass":
						try:
							ys=y[:-len(".eclass")]
							ymtime=os.stat(x+"/"+y)[ST_MTIME]
							if mtimedb["eclass"].has_key(ys):
								if ymtime!=mtimedb["eclass"][ys][0]:
									# The mtime changed on the eclass
									mtimedb["eclass"][ys]=[ymtime,x+"/"+y,mtimedb["eclass"][ys][2]]
								else:
									# nothing changed
									pass
							else:
								# New eclass
								mtimedb["eclass"][ys]=[ymtime,x+"/"+y, {}]
						except Exception, e:
							print "!!! stat exception:",e
							continue
	if myeclass != None:
		if not mtimedb["eclass"].has_key(myeclass):
			# Eclass doesn't exist.
			print "!!! eclass '"+myeclass+"' in '"+str(mycpv)+"' does not exist:"
			raise KeyError
		else:
			if (mycpv!=None) and (mymtime!=None):
				if mycpv not in mtimedb["packages"]:
					mtimedb["packages"].append(mycpv)
				if mtimedb["eclass"][myeclass][2].has_key(mycpv):
					# Check if the ebuild mtime changed OR if the mtime for the eclass
					# has changed since it was last updated.
					#print "test:",mymtime!=mtimedb["eclass"][myeclass][2][mycpv][1],mtimedb["eclass"][myeclass][0]!=mtimedb["eclass"][myeclass][2][mycpv][0]
					if (mymtime!=mtimedb["eclass"][myeclass][2][mycpv][1]) or (mtimedb["eclass"][myeclass][0]!=mtimedb["eclass"][myeclass][2][mycpv][0]):
						# Store the new mtime before we expire the cache so we don't
						# repeatedly regen this entry.
						#print " regen --",myeclass,"--",mymtime,mtimedb["eclass"][myeclass][2][mycpv][1],"--",mtimedb["eclass"][myeclass][0],mtimedb["eclass"][myeclass][2][mycpv][0]
						mtimedb["eclass"][myeclass][2][mycpv]=[mtimedb["eclass"][myeclass][0],mymtime]
						# Expire the cache. mtimes don't match.
						return 0
					else:
						# Matches
						#print "!regen --",myeclass,"--",mymtime,mtimedb["eclass"][myeclass][2][mycpv][1],"--",mtimedb["eclass"][myeclass][0],mtimedb["eclass"][myeclass][2][mycpv][0]
						return 1
				else:
					# Don't have an entry... Must be new.
					#print "*regen --",myeclass,"--",mymtime,mtimedb["eclass"][myeclass][2][mycpv][1],"--",mtimedb["eclass"][myeclass][0],mtimedb["eclass"][myeclass][2][mycpv][0]
					mtimedb["eclass"][myeclass][2][mycpv]=[mtimedb["eclass"][myeclass][0],mymtime]
					return 0
			else:
				# We're missing some vital parts.
				raise KeyError
	else:
		# Recurse without explicit eclass. (Recurse all)
		if mycpv in mtimedb["packages"]:
			for myeclass in mtimedb["eclass"].keys():
				if mtimedb["eclass"][myeclass][2].has_key(mycpv):
					if (mymtime!=mtimedb["eclass"][myeclass][2][mycpv][1]) or (mtimedb["eclass"][myeclass][0]!=mtimedb["eclass"][myeclass][2][mycpv][0]):
						#print " regen mtime:",mymtime,mtimedb["eclass"][myeclass][2][mycpv][1],"--",mtimedb["eclass"][myeclass][0],mtimedb["eclass"][myeclass][2][mycpv][0]
						#mtimes do not match
						return 0
		#print "!regen mtime"
		return 1
# ----------------------------------------------------------------------------

auxdbkeys=['DEPEND','RDEPEND','SLOT','SRC_URI','RESTRICT','HOMEPAGE','LICENSE','DESCRIPTION','KEYWORDS','INHERITED','IUSE','CDEPEND','PDEPEND']
auxdbkeylen=len(auxdbkeys)
class portdbapi(dbapi):
	"this tree will scan a portage directory located at root (passed to init)"
	def __init__(self):
		self.root=settings["PORTDIR"]
		self.auxcache={}
		#if the portdbapi is "frozen", then we assume that we can cache everything (that no updates to it are happening)
		self.xcache={}
		self.frozen=0
		#overlays="overlay roots"
		self.overlays=[]

	def finddigest(self,mycpv):
		try:
			mydig   = self.findname2(mycpv)[0]
			mydigs  = string.split(mydig, "/")[:-1]
			mydig   = string.join(mydigs, "/")

			mysplit = mycpv.split("/")
		except:
			return ""
		return mydig+"/files/digest-"+mysplit[-1]

	def findname(self,mycpv):
		return self.findname2(mycpv)[0]

	def findname2(self,mycpv):
		"returns file location for this particular package"
		ignoringerrors=1
		if not mycpv:
			return "",0
		mysplit=mycpv.split("/")
		if mysplit[0]=="virtual":
			print "!!! Cannot resolve a virtual package name to an ebuild."
			print "!!! This is a bug, please report it. ("+mycpv+")"
			sys.exit(1)
		
		psplit=pkgsplit(mysplit[1])
		if psplit:
			for myloc in suffix_array(self.overlays, "/"+mysplit[0]+"/"+psplit[0]+"/"+mysplit[1]+".ebuild"):
				if os.access(myloc, os.R_OK):
					return myloc,1

		# XXX Why are there errors here? XXX
		try:
			myret=self.root+"/"+mysplit[0]+"/"+psplit[0]+"/"+mysplit[1]+".ebuild"
		except Exception, e:
			if not ignoringerrors:
				print "!!! There has been an error. Please report this via IRC or bugs.gentoo.org"
				print "!!! mycpv:  ",mycpv
				print "!!! mysplit:",mysplit
				print "!!! psplit: ",psplit
				print "!!! error:  ",e
				print
				sys.exit(1)
			return ""
		return myret,0
	
	def aux_get(self,mycpv,mylist,strict=0,metacachedir=None):
		"stub code for returning auxilliary db information, such as SLOT, DEPEND, etc."
		'input: "sys-apps/foo-1.0",["SLOT","DEPEND","HOMEPAGE"]'
		'return: ["0",">=sys-libs/bar-1.0","http://www.foo.com"] or raise KeyError if error'
		global auxdbkeys,auxdbkeylen,dbcachedir
		dmtime=0
		emtime=0
		doregen=0
		doregen2=0
		mylines=[]
		stale=0
		usingmdcache=0
		myebuild,in_overlay=self.findname2(mycpv)
		mydbkey=dbcachedir+"/"+mycpv
		mymdkey=None
		if not in_overlay and metacachedir and os.access(metacachedir, os.R_OK):
			mymdkey=metacachedir+"/"+mycpv

		#print "statusline1:",doregen,dmtime,emtime,mycpv
		try:
			emtime=os.stat(myebuild)[ST_MTIME]
		except:
			print "!!! aux_get(): ebuild for '"+mycpv+"' does not exist at:"              
			print "!!!            "+myebuild
			raise KeyError
		
		# first, we take a look at the size of the ebuild/cache entry to ensure we
		# have a valid data, then we look at the mtime of the ebuild and the
		# cache entry to see if we need to regenerate our cache entry.
		try:
			mydbkeystat=os.stat(mydbkey)
			if mydbkeystat[ST_SIZE] == 0:
				doregen=1
				dmtime=0
			else:
				dmtime=mydbkeystat[ST_MTIME]
				if dmtime!=emtime:
					doregen=1
		except OSError:
			doregen=1

		#print "statusline2:",doregen,dmtime,emtime,mycpv
		if doregen or not eclass(None, mycpv, dmtime):
			stale=1
			#print "doregen:",doregen,mycpv
			if mymdkey and os.access(mymdkey, os.R_OK):
					#sys.stderr.write("+")
					#sys.stderr.flush()
					try:
						mydir=os.path.dirname(mydbkey)
						if not os.path.exists(mydir):
							os.makedirs(mydir, 2775)
							os.chown(mydir,uid,portage_gid)
						shutil.copy2(mymdkey, mydbkey)
						usingmdcache=1
					except Exception,e:
						print "!!! Unable to copy '"+mymdkey+"' to '"+mydbkey+"'"
						print "!!!",e
			else:
				if doebuild(myebuild,"depend","/"):
					#depend returned non-zero exit code...
					sys.stderr.write(str(red("\naux_get():")+" (0) Error in "+mycpv+" ebuild.\n"
             "               Check for syntax error or corruption in the ebuild. (--debug)\n\n"))
					raise KeyError

			doregen2=1
			dmtime=0
			try:
				os.utime(mydbkey,(emtime,emtime))
				mydbkeystat=os.stat(mydbkey)
				if mydbkeystat[ST_SIZE] == 0:
					#print "!!! <-- Size == 0 -->"
					pass
				else:
					#print "!!! <-- Size != 0 -->"
					dmtime=mydbkeystat[ST_MTIME]
					doregen2=0
			except OSError:
				#print "doregen1 failed."
				pass
			
		#print "--doregen"
		#Now, our cache entry is possibly regenerated.  It could be up-to-date, but it may not be...
		#If we regenerated the cache entry or we don't have an internal cache entry or or cache entry
		#is stale, then we need to read in the new cache entry.

		#print "statusline3:",doregen,dmtime,emtime,mycpv
		if not (self.auxcache.has_key(mycpv) and \
		        self.auxcache[mycpv].has_key("mtime") and \
		        self.auxcache[mycpv]["mtime"] == dmtime):
			#print "stale auxcache"
			stale=1

			try:
				#print "grab cent"
				mycent=open(mydbkey,"r")
				mylines=mycent.readlines()
				mycent.close()
			except (IOError, OSError):
				sys.stderr.write(str(red("\naux_get():")+" (1) Error in "+mycpv+" ebuild.\n"
				  "               Check for syntax error or corruption in the ebuild. (--debug)\n\n"))
				raise KeyError

			#We now have the db
			myeclasses=[]
			#if we regenerated our cache entry earlier, there's no point in
			#checking all this as we know we are up-to-date.  Otherwise....
			if not mylines:
				print "no mylines"
				pass
			elif doregen2 or len(mylines)<len(auxdbkeys):
				doregen2=1
				#print "too few auxdbkeys / invalid generation"
			elif mylines[auxdbkeys.index("INHERITED")]!="\n":
				#print "inherits"
				#Verify if this ebuild is current against the eclasses it uses.
				#eclass() -> Loads, checks, and returns 1 if it's current.
				myeclasses=mylines[auxdbkeys.index("INHERITED")].split()
				#print "))) 002"
				for myeclass in myeclasses:
					myret=eclass(myeclass,mycpv,dmtime)
					#print "eclass '",myeclass,"':",myret,doregen,doregen2
					if myret==None:
						# eclass is missing... We'll die if it doesn't get fixed on regen
						doregen2=1
						break
					if myret==0 and not usingmdcache:
						#print "((( 002 0"
						#we set doregen2 to regenerate this entry in case it was fixed
						#in the ebuild/eclass since the cache entry was created.
						#print "Old cache entry. Regen."
						doregen2=1
						break

			#print "doregen2: pre"
			if doregen2:	
				#sys.stderr.write("-")
				#sys.stderr.flush()
				#print "doregen2"
				stale=1
				#old cache entry, needs updating (this could raise IOError)

				try:
					# Can't set the mtime of a file we don't own, so to ensure that it
					# is owned by the running user, we delete the file so we recreate it.
					os.unlink(mydbkey)
				except:
					pass
			
				if doebuild(myebuild,"depend","/"):
					#depend returned non-zero exit code...
					sys.stderr.write(str(red("\naux_get():")+" (2) Error in "+mycpv+" ebuild.\n"
					  "               Check for syntax error or corruption in the ebuild. (--debug)\n\n"))
					raise KeyError
				try:
					os.utime(mydbkey,(emtime,emtime))
					mycent=open(mydbkey,"r")
				except (IOError, OSError):
					sys.stderr.write(str(red("\naux_get():")+" (3) Error in "+mycpv+" ebuild.\n"
					  "               Check for syntax error or corruption in the ebuild. (--debug)\n\n"))
					raise KeyError
				mylines=mycent.readlines()
				mycent.close()

			#print "stale: pre"
			if stale:
				#print "stale: in"
				# due to a stale or regenerated cache entry,
				# we need to update our internal dictionary....
				try:
					# Set the dep entry to the ebuilds mtime.
					self.auxcache[mycpv]={"mtime": emtime}
					myeclasses=mylines[auxdbkeys.index("INHERITED")].split()
				except Exception, e:
					print red("\n\naux_get():")+" stale entry was not regenerated for"
					print "           "+mycpv+"; deleting and exiting."
					print "!!!",e
					os.unlink(mydbkey)
					sys.exit(1)
				for myeclass in myeclasses:
					if eclass(myeclass,mycpv,emtime)==None:
						# Eclass wasn't found.
						print red("\n\naux_get():")+' eclass "'+myeclass+'" from',mydbkey,"not found."
						print "!!! Eclass '"+myeclass+"' not found."
						sys.exit(1)
				try:
					for x in range(0,len(auxdbkeys)):
						self.auxcache[mycpv][auxdbkeys[x]]=mylines[x][:-1]
				except IndexError:
					print red("\n\naux_get():")+" error processing",auxdbkeys[x],"for",mycpv
					print "           Expiring the cache entry and exiting."
					os.unlink(mydbkey)
					sys.exit(1)
		#finally, we look at our internal cache entry and return the requested data.
		returnme=[]
		for x in mylist:
			if self.auxcache[mycpv].has_key(x):
				returnme.append(self.auxcache[mycpv][x])
			else:
				returnme.append("")
		return returnme
		
	def cpv_exists(self,mykey):
		"Tells us whether an actual ebuild exists on disk (no masking)"
		cps2=mykey.split("/")
		cps=catpkgsplit(mykey,0)
		if not cps:
			#invalid cat/pkg-v
			return 0
		for o_cpv in suffix_array(self.overlays,"/"+cps[0]+"/"+cps[1]+"/"+cps2[1]+".ebuild"):
			if os.path.exists(o_cpv):
				return 1
		if os.path.exists(self.root+"/"+cps[0]+"/"+cps[1]+"/"+cps2[1]+".ebuild"):
			return 1
		return 0

	def cp_all(self):
		"returns a list of all keys in our tree"
		biglist=[]
		for x in categories:
			for y in listdir(self.root+"/"+x,EmptyOnError=1,ignorecvs=1):
				biglist.append(x+"/"+y)
			for oroot in self.overlays:
				for y in listdir(oroot+"/"+x,EmptyOnError=1,ignorecvs=1):
					mykey=x+"/"+y
					if not mykey in biglist:
						biglist.append(mykey)
		return biglist
	
	def p_list(self,mycp):
		returnme=[]
		for x in listdir(self.root+"/"+mycp,EmptyOnError=1):
			if x[-7:]==".ebuild":
				returnme.append(x[:-7])	
		for oroot in self.overlays:
			for x in listdir(oroot+"/"+mycp,EmptyOnError=1,ignorecvs=1):
				if x[-7:]==".ebuild":
					mye=x[:-7]
					if not mye in returnme:
						returnme.append(mye)
		return returnme

	def cp_list(self,mycp):
		mysplit=mycp.split("/")
		returnme=[]
		list=listdir(self.root+"/"+mycp,EmptyOnError=1)
		if list:
			for x in list:
				if x[-7:]==".ebuild":
					returnme.append(mysplit[0]+"/"+x[:-7])	
		for oroot in self.overlays:
			for x in listdir(oroot+"/"+mycp,EmptyOnError=1,ignorecvs=1):
				if x[-7:]==".ebuild":
					mycp=mysplit[0]+"/"+x[:-7]
					if not mycp in returnme:
						returnme.append(mycp)
		return returnme

	def freeze(self):
		for x in ["list-visible","bestmatch-visible","match-visible","match-all"]:
			self.xcache[x]={}
		self.frozen=1

	def melt(self):
		self.xcache={}
		self.frozen=0

	def xmatch(self,level,origdep,mydep=None,mykey=None,mylist=None):
		"caching match function; very trick stuff"
		#if no updates are being made to the tree, we can consult our xcache...
		if self.frozen:
			try:
				return self.xcache[level][origdep]
			except KeyError:
				pass

		if not mydep:
			#this stuff only runs on first call of xmatch()
			#create mydep, mykey from origdep
			mydep=dep_expand(origdep,self)
			mykey=dep_getkey(mydep)
	
		if level=="list-visible":
			#a list of all visible packages, not called directly (just by xmatch())
			#myval=self.visible(self.cp_list(mykey))
			myval=self.gvisible(self.visible(self.cp_list(mykey)))
		elif level=="bestmatch-visible":
			#dep match -- best match of all visible packages
			myval=best(self.xmatch("match-visible",None,mydep,mykey))
			#get all visible matches (from xmatch()), then choose the best one
		elif level=="bestmatch-list":
			#dep match -- find best match but restrict search to sublist 
			myval=best(self.match2(mydep,mykey,mylist))
			#no point is calling xmatch again since we're not caching list deps
		elif level=="match-list":
			#dep match -- find all matches but restrict search to sublist (used in 2nd half of visible())
			myval=self.match2(mydep,mykey,mylist)
		elif level=="match-visible":
			#dep match -- find all visible matches
			myval=self.match2(mydep,mykey,self.xmatch("list-visible",None,mydep,mykey))
			#get all visible packages, then get the matching ones
		elif level=="match-all":
			#match *all* visible *and* masked packages
			myval=self.match2(mydep,mykey,self.cp_list(mykey))
		else:
			print "ERROR: xmatch doesn't handle",level,"query!"
			raise KeyError
		if self.frozen and (level not in ["match-list","bestmatch-list"]):
			self.xcache[level][mydep]=myval
		return myval

	def match(self,mydep):
		return self.xmatch("match-visible",mydep)

	def visible(self,mylist):
		"""two functions in one.  Accepts a list of cpv values and uses the package.mask *and*
		packages file to remove invisible entries, returning remaining items.  This function assumes
		that all entries in mylist have the same category and package name."""
		if (mylist==None) or (len(mylist)==0):
			return []
		newlist=mylist[:]
		#first, we mask out packages in the package.mask file
		mykey=newlist[0]
		cpv=catpkgsplit(mykey)
		if not cpv:
			#invalid cat/pkg-v
			print "visible(): invalid cat/pkg-v:",mykey
			return []
		mycp=cpv[0]+"/"+cpv[1]
		if maskdict.has_key(mycp):
			for x in maskdict[mycp]:
				mymatches=self.xmatch("match-all",x)
				if mymatches==None:
					#error in package.mask file; print warning and continue:
					print "visible(): package.mask entry \""+x+"\" is invalid, ignoring..."
					continue
				for y in mymatches:
					if not (unmaskdict.has_key(mycp) and (y in unmaskdict[mycp])):
						while y in newlist:
							newlist.remove(y)
		if revmaskdict.has_key(mycp):
			for x in revmaskdict[mycp]:
				#important: only match against the still-unmasked entries...
				#notice how we pass "newlist" to the xmatch() call below....
				#Without this, ~ deps in the packages files are broken.
				mymatches=self.xmatch("match-list",x,mylist=newlist)
				if mymatches==None:
					#error in packages file; print warning and continue:
					print "emerge: visible(): profile packages entry \""+x+"\" is invalid, ignoring..."
					continue
				pos=0
				while pos<len(newlist):
					if newlist[pos] not in mymatches:
						del newlist[pos]
					else:
						pos += 1
		return newlist

	def gvisible(self,mylist):
		"strip out group-masked (not in current group) entries"
		global groups
		if mylist==None:
			return []
		newlist=[]
		for mycpv in mylist:
			#we need to update this next line when we have fully integrated the new db api
			auxerr=0
			try:
				myaux=db["/"]["porttree"].dbapi.aux_get(mycpv, ["KEYWORDS"])
			except (KeyError,IOError,TypeError):
				return []
			if not myaux[0]:
				# KEYWORDS=""
				#print "!!! No KEYWORDS for "+str(mycpv)+" -- Untested Status"
				continue
			mygroups=myaux[0].split()
			match=0
			for gp in mygroups:
				if gp=="*":
					match=1
					break
				elif "-"+gp in groups:
					match=0
					break
				elif gp in groups:
					match=1
					break
			if match:
				newlist.append(mycpv)
		return newlist
		
class binarytree(packagetree):
	"this tree scans for a list of all packages available in PKGDIR"
	def __init__(self,root="/",virtual=None,clone=None):
		if clone:
			self.root=clone.root
			self.pkgdir=clone.pkgdir
			self.dbapi=clone.dbapi
			self.populated=clone.populated
			self.tree=clone.tree
			self.remotepkgs=clone.remotepkgs
			self.invalids=clone.invalids
		else:
			self.root=root
			self.pkgdir=settings["PKGDIR"]
			self.dbapi=fakedbapi()
			self.populated=0
			self.tree={}
			self.remotepkgs={}
			self.invalids=[]

	def move_ent(self,mylist):
		if not self.populated:
			self.populate()
		origcp=mylist[1]
		newcp=mylist[2]
		origmatches=self.dbapi.cp_list(origcp)
		if not origmatches:
			return
		for mycpv in origmatches:
			mycpsplit=catpkgsplit(mycpv)
			mynewcpv=newcp+"-"+mycpsplit[2]
			mynewcat=newcp.split("/")[0]
			if mycpsplit[3]!="r0":
				mynewcpv += "-"+mycpsplit[3]
			if os.path.exists(self.getname(mynewcpv)):
				sys.stderr.write("!!! Cannot update binary: Destination exists.\n")
				sys.stderr.write("!!! "+mycpv+" -> "+mynewcpv+"\n")
				continue
			tbz2path=self.getname(mycpv)
			if os.path.exists(tbz2path) and not os.access(tbz2path,os.W_OK):
				sys.stderr.write("!!! Cannot update readonly binary: "+mycpv+"\n")
				continue
			
			#print ">>> Updating data in:",mycpv
			sys.stdout.write("%")
			sys.stdout.flush()
			mytmpdir=settings["PORTAGE_TMPDIR"]+"/tbz2"
			mytbz2=xpak.tbz2(tbz2path)
			mytbz2.decompose(mytmpdir, cleanup=1)
			
			mycmd='/usr/lib/portage/bin/fixdbentries'
			mycmd=mycmd+' "'+origcp+'" '
			mycmd=mycmd+' "'+newcp+'" '
			mycmd=mycmd+' "'+mytmpdir+'" '
			spawn(mycmd,free=1)

			catfile=open(mytmpdir+"/CATEGORY", "w")
			catfile.write(mynewcat+"\n")
			catfile.close()
			try:
				os.rename(mytmpdir+"/"+string.split(mycpv,"/")[1]+".ebuild", mytmpdir+"/"+string.split(mynewcpv, "/")[1]+".ebuild")
			except Exception, e:
				pass
				
			mytbz2.recompose(mytmpdir, cleanup=1)
			
			self.dbapi.cpv_remove(mycpv)
			os.rename(tbz2path,self.getname(mynewcpv))
			self.dbapi.cpv_inject(mynewcpv)
		return 1

	def update_ents(self,mybiglist):
		if not self.populated:
			self.populate()
		for mycpv in self.dbapi.cp_all():
			tbz2path=self.getname(mycpv)
			if os.path.exists(tbz2path) and not os.access(tbz2path,os.W_OK):
				sys.stderr.write("!!! Cannot update readonly binary: "+mycpv+"\n")
				continue
			#print ">>> Updating binary data:",mycpv
			sys.stderr.write("*")
			sys.stderr.flush()
			mytmpdir=settings["PORTAGE_TMPDIR"]+"/tbz2"
			mytbz2=xpak.tbz2(tbz2path)
			mytbz2.decompose(mytmpdir,cleanup=1)
			for mylist in mybiglist:
				mylist=string.split(mylist)
				if mylist[0] != "move":
					continue
				mycmd='/usr/lib/portage/bin/fixdbentries'
				mycmd=mycmd+' "'+mylist[1]+'" '
				mycmd=mycmd+' "'+mylist[2]+'" '
				mycmd=mycmd+' "'+mytmpdir+'" '
				spawn(mycmd,free=1)
			mytbz2.recompose(mytmpdir,cleanup=1)
		return 1

	def populate(self, getbinpkgs=0,getbinpkgsonly=0):
		"populates the binarytree"
		if (not os.path.isdir(self.pkgdir) and not getbinpkgs):
			return 0
		if (not os.path.isdir(self.pkgdir+"/All") and not getbinpkgs):
			return 0

		if (not getbinpkgsonly) and os.path.exists(self.pkgdir+"/All"):
			for mypkg in listdir(self.pkgdir+"/All"):
				if mypkg[-5:]!=".tbz2":
					continue
				mytbz2=xpak.tbz2(self.pkgdir+"/All/"+mypkg)
				mycat=mytbz2.getfile("CATEGORY")
				if not mycat:
					#old-style or corrupt package
					sys.stderr.write("!!! Invalid binary package: "+mypkg+"\n")
					self.invalids.append(mypkg)
					continue
				mycat=string.strip(mycat)
				fullpkg=mycat+"/"+mypkg[:-5]
				mykey=dep_getkey(fullpkg)
				try:
					# invalid tbz2's can hurt things.
					self.dbapi.cpv_inject(fullpkg)
				except:
					continue

		if getbinpkgs and not settings["PORTAGE_BINHOST"]:
			sys.stderr.write(red("!!! PORTAGE_BINHOST unset, but use is requested.\n"))

		if getbinpkgs and settings["PORTAGE_BINHOST"] and not self.remotepkgs:
			try:
				chunk_size = long(settings["PORTAGE_BINHOST_CHUNKSIZE"])
				if chunk_size < 8:
					chunk_size = 8
			except:
				chunk_size = 3000

			sys.stderr.write(green("Fetching binary packages info...\n"))
			self.remotepkgs = getbinpkg.dir_get_metadata(settings["PORTAGE_BINHOST"], chunk_size=chunk_size)
			sys.stderr.write(green("  -- DONE!\n\n"))

			for mypkg in self.remotepkgs.keys():
				if not self.remotepkgs[mypkg].has_key("CATEGORY"):
					#old-style or corrupt package
					sys.stderr.write("!!! Invalid remote binary package: "+mypkg+"\n")
					del self.remotepkgs[mypkg]
					continue
				mycat=string.strip(self.remotepkgs[mypkg]["CATEGORY"])
				fullpkg=mycat+"/"+mypkg[:-5]
				mykey=dep_getkey(fullpkg)
				try:
					# invalid tbz2's can hurt things.
					#print "cpv_inject("+str(fullpkg)+")"
					self.dbapi.cpv_inject(fullpkg)
					#print "  -- Injected"
				except:
					sys.stderr.write("!!! Failed to inject remote binary package:"+str(fullpkg)+"\n")
					del self.remotepkgs[mypkg]
					continue
		self.populated=1

	def inject(self,cpv):
		return self.dbapi.cpv_inject(cpv)
	
	def exists_specific(self,cpv):
		if not self.populated:
			self.populate()
		return self.dbapi.match(dep_expand("="+cpv,self.dbapi))

	def dep_bestmatch(self,mydep):
		"compatibility method -- all matches, not just visible ones"
		if not self.populated:
			self.populate()
		mydep=dep_expand(mydep,self.dbapi)
		mykey=dep_getkey(mydep)
		mymatch=best(self.dbapi.match2(mydep,mykey,self.dbapi.cp_list(mykey)))
		if mymatch==None:
			return ""
		return mymatch

	def getname(self,pkgname):
		"returns file location for this particular package"
		mysplit=string.split(pkgname,"/")
		if len(mysplit)==1:
			return self.pkgdir+"/All/"+self.resolve_specific(pkgname)+".tbz2"
		else:
			return self.pkgdir+"/All/"+mysplit[1]+".tbz2"

	def isremote(self,pkgname):
		"Returns true if the package is kept remotely."
		mysplit=string.split(pkgname,"/")
		remote = (not os.path.exists(self.getname(pkgname))) and self.remotepkgs.has_key(mysplit[1]+".tbz2")
		return remote
	
	def get_use(self,pkgname):
		mysplit=string.split(pkgname,"/")
		if self.isremote(pkgname):
			return string.split(self.remotepkgs[mysplit[1]+".tbz2"]["USE"][:])
		tbz2=xpak.tbz2(self.getname(pkgname))
		return tbz2.getfile("USE")
			
	
	def gettbz2(self,pkgname):
		"fetches the package from a remote site, if necessary."
		print "Fetching '"+str(pkgname)+"'"
		mysplit  = string.split(pkgname,"/")
		tbz2name = mysplit[1]+".tbz2"
		if not self.isremote(pkgname):
			if (tbz2name not in self.invalids):
				return
			else:
				sys.stderr.write("Resuming download of this tbz2, but it is possible that it is corrupt.\n")
		try:
			os.makedirs(settings["PKGDIR"]+"/All/", 0775)
		except:
			pass
		mydest = settings["PKGDIR"]+"/All/"
		#myf = open(myfn, "w+")
		getbinpkg.file_get(settings["PORTAGE_BINHOST"]+"/"+tbz2name, mydest, fcmd=settings["RESUMECOMMAND"])
		#myf.close()
		return

class dblink:
	"this class provides an interface to the standard text package database"
	def __init__(self,cat,pkg,myroot):
		"create a dblink object for cat/pkg.  This dblink entry may or may not exist"
		self.cat=cat
		self.pkg=pkg
		self.dbdir=os.path.normpath(myroot+"///var/db/pkg/"+cat+"/"+pkg)
		self.myroot=myroot
		self.updateprotect()

	def getpath(self):
		"return path to location of db information (for >>> informational display)"
		return self.dbdir
	
	def exists(self):
		"does the db entry exist?  boolean."
		return os.path.exists(self.dbdir)
	
	def create(self):
		"create the skeleton db directory structure.  No contents, virtuals, provides or anything.  Also will create /var/db/pkg if necessary."
		if not os.path.exists(self.dbdir):
			os.makedirs(self.dbdir)
	
	def delete(self):
		"erase this db entry completely"
		if not os.path.exists(self.dbdir):
			return
		try:
			for x in listdir(self.dbdir):
				os.unlink(self.dbdir+"/"+x)
			os.rmdir(self.dbdir)
		except OSError, e:
			print "!!! Unable to remove db entry for this package."
			print "!!! It is possible that a directory is in this one. Portage will still"
			print "!!! register this package as installed as long as this directory exists."
			print "!!! You may delete this directory with 'rm -Rf "+self.dbdir+"'"
			print "!!! "+str(e)
			print
			sys.exit(1)
	
	def clearcontents(self):
		if os.path.exists(self.dbdir+"/CONTENTS"):
			os.unlink(self.dbdir+"/CONTENTS")
	
	def getcontents(self):
		if not os.path.exists(self.dbdir+"/CONTENTS"):
			return None
		pkgfiles={}
		myc=open(self.dbdir+"/CONTENTS","r")
		mylines=myc.readlines()
		myc.close()
		pos=1
		for line in mylines:
			mydat=string.split(line)
			# we do this so we can remove from non-root filesystems
			# (use the ROOT var to allow maintenance on other partitions)
			try:
				mydat[1]=os.path.normpath(root+mydat[1][1:])
				if mydat[0]=="obj":
					#format: type, mtime, md5sum
					pkgfiles[string.join(mydat[1:-2]," ")]=[mydat[0], mydat[-1], mydat[-2]]
				elif mydat[0]=="dir":
					#format: type
					pkgfiles[string.join(mydat[1:])]=[mydat[0] ]
				elif mydat[0]=="sym":
					#format: type, mtime, dest
					x=len(mydat)-1
					splitter=-1
					while(x>=0):
						if mydat[x]=="->":
							splitter=x
							break
						x=x-1
					if splitter==-1:
						return None
					pkgfiles[string.join(mydat[1:splitter]," ")]=[mydat[0], mydat[-1], string.join(mydat[(splitter+1):-1]," ")]
				elif mydat[0]=="dev":
					#format: type
					pkgfiles[string.join(mydat[1:]," ")]=[mydat[0] ]
				elif mydat[0]=="fif":
					#format: type
					pkgfiles[string.join(mydat[1:]," ")]=[mydat[0]]
				else:
					return None
			except (KeyError,IndexError):
				print "portage: CONTENTS line",pos,"corrupt!"
			pos += 1
		return pkgfiles

	def updateprotect(self):
		#do some config file management prep
		self.protect=[]
		for x in string.split(settings["CONFIG_PROTECT"]):
			ppath=os.path.normpath(self.myroot+"/"+x)+"/"
			if os.path.isdir(ppath):
				self.protect.append(ppath)
			
		self.protectmask=[]
		for x in string.split(settings["CONFIG_PROTECT_MASK"]):
			ppath=os.path.normpath(self.myroot+"/"+x)+"/"
			if os.path.isdir(ppath):
				self.protectmask.append(ppath)
			#if it doesn't exist, silently skip it

	def isprotected(self,obj):
		"""Checks if obj is in the current protect/mask directories. Returns
		0 on unprotected/masked, and 1 on protected."""
		masked=0
		protected=0
		for ppath in self.protect:
			if (len(ppath) > masked) and (obj[0:len(ppath)]==ppath):
				protected=len(ppath)
				#config file management
				for pmpath in self.protectmask:
					if (len(pmpath) >= protected) and (obj[0:len(pmpath)]==pmpath):
						#skip, it's in the mask
						masked=len(pmpath)
		return (protected > masked)

	def unmerge(self,pkgfiles=None,trimworld=1):
		if not pkgfiles:
			print "No package files given... Grabbing a set."
			pkgfiles=self.getcontents()
			if not pkgfiles:
				return
		# Now, don't assume that the name of the ebuild is the same as the
		# name of the dir; the package may have been moved.
		myebuildpath=None
		mystuff=listdir(self.dbdir,EmptyOnError=1)
		for x in mystuff:
			if x[-7:]==".ebuild":
				myebuildpath=self.dbdir+"/"+x
				break
		#do prerm script
		if myebuildpath and os.path.exists(myebuildpath):
			a=doebuild(myebuildpath,"prerm",self.myroot)

		mykeys=pkgfiles.keys()
		mykeys.sort()
		mykeys.reverse()

		self.updateprotect()

		#process symlinks second-to-last, directories last.
		mydirs=[]
		mysyms=[]
		for obj in mykeys:
			obj=os.path.normpath(obj)
			if obj[:2]=="//":
				obj=obj[1:]
			if not os.path.exists(obj):
				if not os.path.islink(obj):
					#we skip this if we're dealing with a symlink
					#because os.path.exists() will operate on the
					#link target rather than the link itself.
					print "--- !found "+str(pkgfiles[obj][0]), obj
					continue
			if self.isprotected(obj):
				print "--- cfgpro "+str(pkgfiles[obj][0]), obj
				continue

			lstatobj=os.lstat(obj)
			lmtime=str(lstatobj[ST_MTIME])
			if (pkgfiles[obj][0] not in ("dir","fif","dev","sym")) and (lmtime != pkgfiles[obj][1]):
				print "--- !mtime", pkgfiles[obj][0], obj
				continue

			if pkgfiles[obj][0]=="dir":
				if not os.path.isdir(obj):
					print "--- !dir  ","dir", obj
					continue
				mydirs.append(obj)
			elif pkgfiles[obj][0]=="sym":
				if not os.path.islink(obj):
					print "--- !sym  ","sym", obj
					continue
				mysyms.append(obj)
			elif pkgfiles[obj][0]=="obj":
				if not os.path.isfile(obj):
					print "--- !obj  ","obj", obj
					continue
				mymd5=perform_md5(obj, calc_prelink=1)
				# string.lower is needed because db entries used to be in upper-case.  The
				# string.lower allows for backwards compatibility.
				if mymd5 != string.lower(pkgfiles[obj][2]):
					print "--- !md5  ","obj", obj
					continue
				try:
					os.unlink(obj)
				except (OSError,IOError),e:
					pass		
				print "<<<       ","obj",obj
			elif pkgfiles[obj][0]=="fif":
				if not S_ISFIFO(lstatobj[ST_MODE]):
					print "--- !fif  ","fif", obj
					continue
				try:
					os.unlink(obj)
				except (OSError,IOError),e:
					pass
				print "<<<       ","fif",obj
			elif pkgfiles[obj][0]=="dev":
				print "---       ","dev",obj

		#Now, we need to remove symlinks and directories.  We'll repeatedly
		#remove dead symlinks, then directories until we stop making progress.
		#This is how we'll clean up directories containing symlinks pointing to
		#directories that are now empty.  These cases will require several
		#iterations through our two-stage symlink/directory cleaning loop.

		#main symlink and directory removal loop:

		#progress -- are we making progress?  Initialized to 1 so loop will start
		progress=1
		while progress:
			#let's see if we're able to make progress this iteration...
			progress=0

			#step 1: remove all the dead symlinks we can...

			pos = 0
			while pos<len(mysyms):
				obj=mysyms[pos]
				if os.path.exists(obj):
					pos += 1
				else:
					#we have a dead symlink; remove it from our list, then from existence
					del mysyms[pos]
					#we've made progress!	
					progress = 1
					try:
						os.unlink(obj)
						print "<<<       ","sym",obj
					except (OSError,IOError),e:
						print "!!!       ","sym",obj
						#immutable?
						pass
	
			#step 2: remove all the empty directories we can...
	
			pos = 0
			while pos<len(mydirs):
				obj=mydirs[pos]
				objld=listdir(obj)
				if len(objld)>0:
					#we won't remove this directory (yet), continue
						pos += 1
						continue
				elif (objld != None):
					#zappo time
					del mydirs[pos]
					#we've made progress!
					progress = 1
					try:
						os.rmdir(obj)
						print "<<<       ","dir",obj
					except (OSError,IOError),e:
						#immutable?
						pass
				#else:
				#	print "--- !empty","dir", obj
				#	continue
		
			#step 3: if we've made progress, we'll give this another go...

		#step 4: otherwise, we'll print out the remaining stuff that we didn't unmerge (and rightly so!)

		#directories that aren't empty:
		for x in mydirs:
			print "--- !empty dir", x
			
		#symlinks whose target still exists:
		for x in mysyms:
			print "--- !targe sym", x

		#step 5: well, removal of package objects is complete, now for package *meta*-objects....

		#remove self from vartree database so that our own virtual gets zapped if we're the last node
		db[self.myroot]["vartree"].zap(self.cat+"/"+self.pkg)

		# New code to remove stuff from the world and virtuals files when unmerged.
		if trimworld:
			worldlist=grabfile(self.myroot+"var/cache/edb/world")
			mycpv=self.cat+"/"+self.pkg
			mykey=cpv_getkey(mycpv)
			newworldlist=[]
			for x in worldlist:
				if dep_getkey(x)==mykey:
					matches=db[self.myroot]["vartree"].dbapi.match(x)
					if not matches:
						#zap our world entry
						pass
					elif (len(matches)==1) and (matches[0]==mycpv):
						#zap our world entry
						pass
					else:
						#others are around; keep it.
						newworldlist.append(x)
				else:
					#this doesn't match the package we're unmerging; keep it.
					newworldlist.append(x)
			myworld=open(self.myroot+"var/cache/edb/world","w")
			for x in newworldlist:
				myworld.write(x+"\n")
			myworld.close()

			#remove stale virtual entries (mappings for packages that no longer exist)
			newvirts={}
			myvirts=grabdict(self.myroot+"var/cache/edb/virtuals")
			myprovides=db[self.myroot]["vartree"].get_all_provides()
			for myvirt in myvirts.keys():
				newvirts[myvirt]=[]
				for mykey in myvirts[myvirt]:
					if mykey == self.cat+"/"+pkgsplit(self.pkg)[0]:
						if myprovides.has_key(myvirt) and \
						   (self.cat+"/"+self.pkg in myprovides[myvirt]) and \
							 (len(myprovides[myvirt]) > 1):
							if mykey not in newvirts[myvirt]:
								newvirts[myvirt].append(mykey)
							sys.stderr.write("--- Leaving virtual '"+mykey+"' from '"+myvirt+"'\n")
						else:
							sys.stderr.write("<<< Removing virtual '"+mykey+"' from '"+myvirt+"'\n")
					else:
						if mykey not in newvirts[myvirt]:
							newvirts[myvirt].append(mykey)
				if newvirts[myvirt]==[]:
					del newvirts[myvirt]
			writedict(newvirts,self.myroot+"var/cache/edb/virtuals")
	
		#do original postrm
		if myebuildpath and os.path.exists(myebuildpath):
			a=doebuild(myebuildpath,"postrm",self.myroot)

	def treewalk(self,srcroot,destroot,inforoot,myebuild):
		global settings
		# srcroot = ${D}; destroot=where to merge, ie. ${ROOT}, inforoot=root of db entry,
		# secondhand = list of symlinks that have been skipped due to their target not existing (will merge later),
		"this is going to be the new merge code"
		if not os.path.exists(self.dbdir):
			self.create()
		
		# before merging, it's *very important* to touch all the files
		# this ensures that their mtime is current and unmerging works correctly
		# spawn("(cd "+srcroot+"; for x in `find`; do  touch -c $x 2>/dev/null; done)",free=1)
		print ">>> Merging",self.cat+"/"+self.pkg,"to",destroot
		# get current counter value (counter_tick also takes care of incrementing it)
		# XXX Need to make this destroot, but it needs to be initialized first. XXX
		counter=db["/"]["vartree"].dbapi.counter_tick()
		# write local package counter for recording
		lcfile=open(inforoot+"/COUNTER","w")
		lcfile.write(str(counter))
		lcfile.close()
		# get old contents info for later unmerging
		oldcontents=self.getcontents()
		# run preinst script
		if myebuild:
			# if we are merging a new ebuild, use *its* pre/postinst rather than using the one in /var/db/pkg 
			# (if any).
			a=doebuild(myebuild,"preinst",root)
		else:
			a=doebuild(inforoot+"/"+self.pkg+".ebuild","preinst",root)
		# open CONTENTS file (possibly overwriting old one) for recording
		outfile=open(inforoot+"/CONTENTS","w")

		self.updateprotect()

		#if we have a file containing previously-merged config file md5sums, grab it.
		if os.path.exists(destroot+"/var/cache/edb/config"):
			cfgfiledict=grabdict(destroot+"/var/cache/edb/config")
		else:
			cfgfiledict={}
		if settings.has_key("NOCONFMEM"):
			cfgfiledict["IGNORE"]=1
		else:
			cfgfiledict["IGNORE"]=0

		# set umask to 0 for merging; back up umask, save old one in prevmask (since this is a global change)
		mymtime=long(time.time())
		prevmask=os.umask(0)
		secondhand=[]	
		# we do a first merge; this will recurse through all files in our srcroot but also build up a
		# "second hand" of symlinks to merge later
		if self.mergeme(srcroot,destroot,outfile,secondhand,"",cfgfiledict,mymtime):
			return 1
		# now, it's time for dealing our second hand; we'll loop until we can't merge anymore.	The rest are
		# broken symlinks.  We'll merge them too.
		lastlen=0
		while len(secondhand) and len(secondhand)!=lastlen:
			# clear the thirdhand.	Anything from our second hand that couldn't get merged will be
			# added to thirdhand.
			thirdhand=[]
			self.mergeme(srcroot,destroot,outfile,thirdhand,secondhand,cfgfiledict,mymtime)
			#swap hands
			lastlen=len(secondhand)
			# our thirdhand now becomes our secondhand.  It's ok to throw away secondhand since 
			# thirdhand contains all the stuff that couldn't be merged.
			secondhand=thirdhand
		if len(secondhand):
			# force merge of remaining symlinks (broken or circular; oh well)
			self.mergeme(srcroot,destroot,outfile,None,secondhand,cfgfiledict,mymtime)
		
		#restore umask
		os.umask(prevmask)
		#if we opened it, close it	
		outfile.close()
		print
		if (oldcontents):
			print ">>> Safely unmerging already-installed instance..."
			self.unmerge(oldcontents,trimworld=0)
			print ">>> original instance of package unmerged safely."	
		# copy "info" files (like SLOT, CFLAGS, etc.) into the database
		for x in listdir(inforoot):
			self.copyfile(inforoot+"/"+x)

		#write out our collection of md5sums
		if cfgfiledict.has_key("IGNORE"):
			del cfgfiledict["IGNORE"]
		writedict(cfgfiledict,destroot+"/var/cache/edb/config")
		
		#create virtual links
		myprovides=self.getelements("PROVIDE")
		if myprovides:
			myvkey=self.cat+"/"+pkgsplit(self.pkg)[0]
			myvirts=grabdict(destroot+"var/cache/edb/virtuals")
			for mycatpkg in self.getelements("PROVIDE"):
				if isspecific(mycatpkg):
					#convert a specific virtual like dev-lang/python-2.2 to dev-lang/python
					mysplit=catpkgsplit(mycatpkg)
					if not mysplit:
						print "treewalk(): skipping invalid PROVIDE entry:",mycatpkg
						continue
					mycatpkg=mysplit[0]+"/"+mysplit[1]
				if myvirts.has_key(mycatpkg):
					if myvkey not in myvirts[mycatpkg]:
						myvirts[mycatpkg][0:0]=[myvkey]
				else:
					myvirts[mycatpkg]=[myvkey]
			writedict(myvirts,destroot+"var/cache/edb/virtuals")
		
		#do postinst script
		if myebuild:
			# if we are merging a new ebuild, use *its* pre/postinst rather than using the one in /var/db/pkg 
			# (if any).
			a=doebuild(myebuild,"postinst",root)
		else:
			a=doebuild(inforoot+"/"+self.pkg+".ebuild","postinst",root)
	
		#update environment settings, library paths. DO NOT change symlinks.
		env_update(makelinks=0)
		print ">>>",self.cat+"/"+self.pkg,"merged."


	def new_protect_filename(self,mydest, newmd5=None):
		"""Resolves a config-protect filename for merging, optionally
		using the last filename if the md5 matches.
		(dest,md5) ==> 'string'            --- path_to_target_filename
		(dest)     ==> ('next', 'highest') --- next_target and most-recent_target
		"""

		# config protection filename format:
		# ._cfg0000_foo
		# 0123456789012
		prot_num=-1
		last_pfile=""
		
		if (len(mydest) == 0):
			raise ValueError, "Empty path provided where a filename is required"
		if (mydest[-1]=="/"): # XXX add better directory checking
			raise ValueError, "Directory provided but this function requires a filename"
		if not os.path.exists(mydest):
			return mydest
		
		real_filename = os.path.basename(mydest)
		real_dirname  = os.path.dirname(mydest)
		for pfile in listdir(real_dirname):
			if pfile[0:5] != "._cfg":
				continue
			if pfile[10:] != real_filename:
				continue
			try:
				new_prot_num = string.atoi(pfile[5:9])
				if new_prot_num > prot_num:
					prot_num = new_prot_num
					last_pfile = pfile
			except:
				continue
		prot_num = prot_num + 1

		new_pfile = os.path.normpath(real_dirname+"/._cfg"+string.zfill(prot_num,4)+"_"+real_filename)
		old_pfile = os.path.normpath(real_dirname+"/"+last_pfile)
		if last_pfile and newmd5:
			if perform_md5(real_dirname+"/"+last_pfile) == newmd5:
				return old_pfile
			else:
				return new_pfile
		elif newmd5:
			return new_pfile
		else:
			return (new_pfile, old_pfile)
		
	def mergeme(self,srcroot,destroot,outfile,secondhand,stufftomerge,cfgfiledict,thismtime):
		srcroot=os.path.normpath("///"+srcroot)+"/"
		destroot=os.path.normpath("///"+destroot)+"/"
		# this is supposed to merge a list of files.  There will be 2 forms of argument passing.
		if type(stufftomerge)==types.StringType:
			#A directory is specified.  Figure out protection paths, listdir() it and process it.
			mergelist=listdir(srcroot+stufftomerge)
			offset=stufftomerge
			# We need mydest defined up here to calc. protection paths.  This is now done once per
			# directory rather than once per file merge.  This should really help merge performance.
			# Trailing / ensures that protects/masks with trailing /'s match.
			mytruncpath="/"+offset+"/"
			myppath=self.isprotected(mytruncpath)
		else:
			mergelist=stufftomerge
			offset=""
		for x in mergelist:
			mysrc=os.path.normpath("///"+srcroot+offset+x)
			mydest=os.path.normpath("///"+destroot+offset+x)
			# myrealdest is mydest without the $ROOT prefix (makes a difference if ROOT!="/")
			myrealdest="/"+offset+x
			# stat file once, test using S_* macros many times (faster that way)
			try:
				mystat=os.lstat(mysrc)
			except OSError, e:
				sys.stderr.write("\n")
				sys.stderr.write(red("!!! ERROR: There appears to be ")+bold("FILE SYSTEM CORRUPTION.")+red(" A file that is listed\n"))
				sys.stderr.write(red("!!!        as existing is not capable of being stat'd. If you are using an\n"))
				sys.stderr.write(red("!!!        experimental kernel, please boot into a stable one, force an fsck,\n"))
				sys.stderr.write(red("!!!        and ensure your filesystem is in a sane state. ")+bold("'shutdown -Fr now'\n"))
				sys.stderr.write(red("!!!        File:  ")+str(mysrc)+"\n")
				sys.stderr.write(red("!!!        Error: ")+str(e)+"\n")
				sys.exit(1)
			except Exception, e:
				sys.stderr.write("\n")
				sys.stderr.write(red("!!! ERROR: An unknown error has occurred during the merge process.\n"))
				sys.stderr.write(red("!!!        A stat call returned the following error for the following file:"))
				sys.stderr.write(    "!!!        Please ensure that your filesystem is intact, otherwise report\n")
				sys.stderr.write(    "!!!        this as a portage bug at bugs.gentoo.org. Append 'emerge info'.\n")
				sys.stderr.write(    "!!!        File:  "+str(mysrc)+"\n")
				sys.stderr.write(    "!!!        Error: "+str(e)+"\n")
				sys.exit(1)
				
				
			mymode=mystat[ST_MODE]
			# handy variables; mydest is the target object on the live filesystems;
			# mysrc is the source object in the temporary install dir 
			try:
				mydmode=os.lstat(mydest)[ST_MODE]
			except:
				#dest file doesn't exist
				mydmode=None
			
			if S_ISLNK(mymode):
				# we are merging a symbolic link
				myabsto=abssymlink(mysrc)
				if myabsto[0:len(srcroot)]==srcroot:
					myabsto=myabsto[len(srcroot):]
					if myabsto[0]!="/":
						myabsto="/"+myabsto
				myto=os.readlink(mysrc)
				# myrealto contains the path of the real file to which this symlink points.
				# we can simply test for existence of this file to see if the target has been merged yet
				myrealto=os.path.normpath(os.path.join(destroot,myabsto))
				if mydmode!=None:
					#destination exists
					if not S_ISLNK(mydmode):
						if S_ISDIR(mydmode):
							# directory in the way: we can't merge a symlink over a directory
							# we won't merge this, continue with next file...
							continue
						if self.isprotected(mydest):
							# Use md5 of the target in ${D} if it exists...
							if os.path.exists(os.path.normpath(srcroot+myabsto)):
								mydest = self.new_protect_filename(myrealdest, perform_md5(srcroot+myabsto))
							else:
								mydest = self.new_protect_filename(myrealdest, perform_md5(myabsto))
								
				# if secondhand==None it means we're operating in "force" mode and should not create a second hand.
				if (secondhand!=None) and (not os.path.exists(myrealto)):
					# either the target directory doesn't exist yet or the target file doesn't exist -- or
					# the target is a broken symlink.  We will add this file to our "second hand" and merge
					# it later.
					secondhand.append(mysrc[len(srcroot):])
					continue
				# unlinking no longer necessary; "movefile" will overwrite symlinks atomically and correctly
				mymtime=movefile(mysrc,mydest,thismtime,mystat)
				if mymtime!=None:
					print ">>>",mydest,"->",myto
					outfile.write("sym "+myrealdest+" -> "+myto+" "+str(mymtime)+"\n")
				else:
					print "!!! Failed to move file."
					print "!!!",mydest,"->",myto
					sys.exit(1)
			elif S_ISDIR(mymode):
				# we are merging a directory
				if mydmode!=None:
					# destination exists
					if not os.access(mydest, os.W_OK):
						pkgstuff = pkgsplit(self.pkg)
						sys.stderr.write("\n!!! Cannot write to '"+mydest+"'.\n")
						sys.stderr.write("!!! Please check permissions and directories for broken symlinks.\n")
						sys.stderr.write("!!! You may start the merge process again by using ebuild:\n")
						sys.stderr.write("!!! ebuild "+settings["PORTDIR"]+"/"+self.cat+"/"+pkgstuff[0]+"/"+self.pkg+".ebuild merge\n")
						sys.stderr.write("!!! And finish by running this: env-update\n\n")
						return 1

					if S_ISLNK(mydmode) or S_ISDIR(mydmode):
						# a symlink to an existing directory will work for us; keep it:
						print "---",mydest+"/"
					else:
						# a non-directory and non-symlink-to-directory.  Won't work for us.  Move out of the way.
						if movefile(mydest,mydest+".backup") == None:
							sys.exit(1)
						print "bak",mydest,mydest+".backup"
						#now create our directory
						os.mkdir(mydest)
						os.chmod(mydest,mystat[0])
						os.chown(mydest,mystat[4],mystat[5])
						print ">>>",mydest+"/"
				else:
					#destination doesn't exist
					os.mkdir(mydest)
					os.chmod(mydest,mystat[0])
					os.chown(mydest,mystat[4],mystat[5])
					print ">>>",mydest+"/"
				outfile.write("dir "+myrealdest+"\n")
				# recurse and merge this directory
				if self.mergeme(srcroot,destroot,outfile,secondhand,offset+x+"/",cfgfiledict,thismtime):
					return 1
			elif S_ISREG(mymode):
				# we are merging a regular file
				mymd5=perform_md5(mysrc)
				# calculate config file protection stuff
				mydestdir=os.path.dirname(mydest)	
				moveme=1
				zing="!!!"
				if mydmode!=None:
					# destination file exists
					if S_ISDIR(mydmode):
						# install of destination is blocked by an existing directory with the same name
						moveme=0
						print "!!!",mydest
					elif S_ISREG(mydmode):
						cfgprot=0
						# install of destination is blocked by an existing regular file;
						# now, config file management may come into play.
						# we only need to tweak mydest if cfg file management is in play.
						if myppath:
							# we have a protection path; enable config file management.
							destmd5=perform_md5(mydest)
							cycled=0
							if cfgfiledict.has_key(myrealdest):
								if destmd5 in cfgfiledict[myrealdest]:
									#cycle
									print "cycle"
									del cfgfiledict[myrealdest]
									cycled=1
							if mymd5==destmd5:
								#file already in place; simply update mtimes of destination
								os.utime(mydest,(thismtime,thismtime))
								zing="---"
								moveme=0
							elif cycled:
								#mymd5!=destmd5 and we've cycled; move mysrc into place as a ._cfg file
								moveme=1
								cfgfiledict[myrealdest]=[mymd5]
								cfgprot=1
							elif cfgfiledict.has_key(myrealdest) and (mymd5 in cfgfiledict[myrealdest]):
								#myd5!=destmd5, we haven't cycled, and the file we're merging has been already merged previously 
								zing="-o-"
								moveme=cfgfiledict["IGNORE"]
								cfgprot=cfgfiledict["IGNORE"]
							else:	
								#mymd5!=destmd5, we haven't cycled, and the file we're merging hasn't been merged before
								moveme=1
								cfgprot=1
								if not cfgfiledict.has_key(myrealdest):
									cfgfiledict[myrealdest]=[]
								if mymd5 not in cfgfiledict[myrealdest]:
									cfgfiledict[myrealdest].append(mymd5)
								#don't record more than 16 md5sums
								if len(cfgfiledict[myrealdest])>16:
									del cfgfiledict[myrealdest][0]
	
						if cfgprot:
							mydest = self.new_protect_filename(myrealdest, mymd5)

				# whether config protection or not, we merge the new file the
				# same way.  Unless moveme=0 (blocking directory)
				if moveme:
					mymtime=movefile(mysrc,mydest,thismtime,mystat)
					if mymtime == None:
						sys.exit(1)
					zing=">>>"
				else:
					mymtime=thismtime
					# We need to touch the destination so that on --update the
					# old package won't yank the file with it. (non-cfgprot related)
					os.utime(myrealdest,(thismtime,thismtime))
					zing="---"
				if mymtime!=None:
					zing=">>>"
					outfile.write("obj "+myrealdest+" "+mymd5+" "+str(mymtime)+"\n")
				print zing,mydest
			else:
				# we are merging a fifo or device node
				zing="!!!"
				if mydmode==None:
					# destination doesn't exist
					if movefile(mysrc,mydest,thismtime,mystat)!=None:
						zing=">>>"
						if S_ISFIFO(mymode):
							# we don't record device nodes in CONTENTS,
							# although we do merge them.
							outfile.write("fif "+myrealdest+"\n")
					else:
						sys.exit(1)
				print zing+" "+mydest
	
	def merge(self,mergeroot,inforoot,myroot,myebuild=None):
		return self.treewalk(mergeroot,myroot,inforoot,myebuild)

	def getstring(self,name):
		"returns contents of a file with whitespace converted to spaces"
		if not os.path.exists(self.dbdir+"/"+name):
			return ""
		myfile=open(self.dbdir+"/"+name,"r")
		mydata=string.split(myfile.read())
		myfile.close()
		return string.join(mydata," ")
	
	def copyfile(self,fname):
		if not os.path.exists(self.dbdir):
			self.create()
		shutil.copyfile(fname,self.dbdir+"/"+os.path.basename(fname))
	
	def getfile(self,fname):
		if not os.path.exists(self.dbdir+"/"+fname):
			return ""
		myfile=open(self.dbdir+"/"+fname,"r")
		mydata=myfile.read()
		myfile.close()
		return mydata

	def setfile(self,fname,data):
		if not os.path.exists(self.dbdir):
			self.create()
		myfile=open(self.dbdir+"/"+fname,"w")
		myfile.write(data)
		myfile.close()
		
	def getelements(self,ename):
		if not os.path.exists(self.dbdir+"/"+ename):
			return [] 
		myelement=open(self.dbdir+"/"+ename,"r")
		mylines=myelement.readlines()
		myreturn=[]
		for x in mylines:
			for y in string.split(x[:-1]):
				myreturn.append(y)
		myelement.close()
		return myreturn
	
	def setelements(self,mylist,ename):
		if not os.path.exists(self.dbdir):
			self.create()
		myelement=open(self.dbdir+"/"+ename,"w")
		for x in mylist:
			myelement.write(x+"\n")
		myelement.close()
	
	def isregular(self):
		"Is this a regular package (does it have a CATEGORY file?  A dblink can be virtual *and* regular)"
		return os.path.exists(self.dbdir+"/CATEGORY")

def cleanup_pkgmerge(mypkg,origdir):
	shutil.rmtree(settings["PORTAGE_TMPDIR"]+"/portage-pkg/"+mypkg)
	os.chdir(origdir)

def pkgmerge(mytbz2,myroot):
	"""will merge a .tbz2 file, returning a list of runtime dependencies
		that must be satisfied, or None if there was a merge error.	This
		code assumes the package exists."""
	if mytbz2[-5:]!=".tbz2":
		print "!!! Not a .tbz2 file"
		return None
	mypkg=os.path.basename(mytbz2)[:-5]
	xptbz2=xpak.tbz2(mytbz2)
	pkginfo={}
	mycat=xptbz2.getfile("CATEGORY")
	if not mycat:
		print "!!! CATEGORY info missing from info chunk, aborting..."
		return None
	mycat=mycat.strip()
	mycatpkg=mycat+"/"+mypkg
	tmploc=settings["PORTAGE_TMPDIR"]+"/portage-pkg/"
	pkgloc=tmploc+"/"+mypkg+"/bin/"
	infloc=tmploc+"/"+mypkg+"/inf/"
	myebuild=tmploc+"/"+mypkg+"/inf/"+os.path.basename(mytbz2)[:-4]+"ebuild"
	if os.path.exists(tmploc+"/"+mypkg):
		shutil.rmtree(tmploc+"/"+mypkg,1)
	os.makedirs(pkgloc)
	os.makedirs(infloc)
	print ">>> extracting info"
	xptbz2.unpackinfo(infloc)
	# run pkg_setup early, so we can bail out early
	# (before extracting binaries) if there's a problem
	origdir=getcwd()
	os.chdir(pkgloc)
	print ">>> extracting",mypkg
	notok=spawn("bzip2 -dc "+mytbz2+" | tar xpf -",free=1)
	if notok:
		print "!!! Error extracting",mytbz2
		cleanup_pkgmerge(mypkg,origdir)
		return None
	# the merge takes care of pre/postinst and old instance
	# auto-unmerge, virtual/provides updates, etc.
	mylink=dblink(mycat,mypkg,myroot)
	if not mylink.exists():
		mylink.create()
		#shell error code
	mylink.merge(pkgloc,infloc,myroot,myebuild)
	if not os.path.exists(infloc+"/RDEPEND"):
		returnme=""
	else:
		#get runtime dependencies
		a=open(infloc+"/RDEPEND","r")
		returnme=string.join(string.split(a.read())," ")
		a.close()
	cleanup_pkgmerge(mypkg,origdir)
	return returnme


if os.environ.has_key("ROOT"):
	root=os.environ["ROOT"]
	if not len(root):
		root="/"
	elif root[-1]!="/":
		root=root+"/"
else:
	root="/"
if root != "/":
	if not os.path.exists(root[:-1]):
		sys.stderr.write("!!! Error: ROOT "+root+" does not exist.  Please correct this.\n")
		sys.stderr.write("!!! Exiting.\n\n")
		sys.exit(1)
	elif not os.path.isdir(root[:-1]):
		sys.stderr.write("!!! Error: ROOT "+root[:-1]+" is not a directory. Please correct this.\n")
		sys.stderr.write("!!! Exiting.\n\n")
		sys.exit(1)

#create tmp and var/tmp if they don't exist; read config
os.umask(0)
if not os.path.exists(root+"tmp"):
	sys.stderr.write(">>> "+root+"tmp doesn't exist, creating it...\n")
	os.mkdir(root+"tmp",01777)
if not os.path.exists(root+"var/tmp"):
	sys.stderr.write(">>> "+root+"var/tmp doesn't exist, creating it...\n")
	try:
		os.mkdir(root+"var",0755)
	except (OSError,IOError):
		pass
	try:
		os.mkdir(root+"var/tmp",01777)
	except:
		sys.stderr.write("portage: couldn't create /var/tmp; exiting.\n")
		sys.exit(1)

os.umask(022)
profiledir=None
if os.path.exists("/etc/make.profile/make.defaults"):
	profiledir="/etc/make.profile"

db={}

def do_vartree():
	global virts,virts_p
	virts=getvirtuals("/")
	virts_p={}

	if virts:
		myvkeys=virts.keys()
		for x in myvkeys:
			vkeysplit=x.split("/")
			if not virts_p.has_key(vkeysplit[1]):
				virts_p[vkeysplit[1]]=virts[x]
	try:
		del x
	except:
		pass
	db["/"]={"virtuals":virts,"vartree":vartree("/",virts)}
	if root!="/":
		virts=getvirtuals(root)
		db[root]={"virtuals":virts,"vartree":vartree(root,virts)}
	#We need to create the vartree first, then load our settings, and then set up our other trees

do_vartree()

if profiledir:
	usedefaults=grabfile(profiledir+"/use.defaults")
else:
	usedefaults=[]
settings=config()

if 'selinux' in settings["USE"].split(" "):
	try:
		import selinux
		selinux_enabled=1
	except OSError, e:
		sys.stderr.write(red("!!! SELinux not loaded: ")+str(e)+"\n")
		selinux_enabled=0
	except ImportError:
		sys.stderr.write(red("!!! SELinux module not found.")+" Please verify that it was installed.\n")
		selinux_enabled=0
else:
	selinux_enabled=0

cachedirs=["/var/cache/edb"]
if root!="/":
	cachedirs.append(root+"var/cache/edb")
if not os.environ.has_key("SANDBOX_ACTIVE"):
	for cachedir in cachedirs:
		if not os.path.exists(cachedir):
			os.makedirs(cachedir,0755)
			sys.stderr.write(">>> "+cachedir+" doesn't exist, creating it...\n")
		if not os.path.exists(cachedir+"/dep"):
			os.makedirs(cachedir+"/dep",2755)
			sys.stderr.write(">>> "+cachedir+"/dep doesn't exist, creating it...\n")
		try:
			os.chown(cachedir,uid,portage_gid)
			os.chmod(cachedir,0775)
		except OSError:
			pass
		try:
			mystat=os.lstat(cachedir+"/dep")
			os.chown(cachedir+"/dep",uid,portage_gid)
			os.chmod(cachedir+"/dep",02775)
			if mystat[ST_GID]!=portage_gid:
				spawn("chown -R "+str(uid)+":"+str(portage_gid)+" "+cachedir+"/dep",free=1)
				spawn("chmod -R u+rw,g+rw "+cachedir+"/dep",free=1)
		except OSError:
			pass
	
def flushmtimedb(record):
	if mtimedb:
		if record in mtimedb.keys():
			del mtimedb[record]
			#print "mtimedb["+record+"] is cleared."
		else:
			sys.stderr.write("Invalid or unset record '"+record+"' in mtimedb.\n")

#grab mtimes for eclasses and upgrades
mtimedb={}
mtimedbkeys=[
"updates", "eclass",  "packages",
"info",    "version", "starttime",
"resume"
]
mtimedbfile=root+"var/cache/edb/mtimedb"
try:
	mypickle=cPickle.Unpickler(open(mtimedbfile))
	mypickle.find_global=None
	mtimedb=mypickle.load()
	if mtimedb.has_key("old"):
		mtimedb["updates"]=mtimedb["old"]
		del mtimedb["old"]
	if mtimedb.has_key("cur"):
		del mtimedb["cur"]
except:
	#print "!!!",e
	mtimedb={"updates":{},"eclass":{},"packages":[],"version":"","starttime":0}
if mtimedb.has_key("version") and mtimedb["version"]!=VERSION:
	flushmtimedb("packages")
	flushmtimedb("eclass")

for x in mtimedb.keys():
	if x not in mtimedbkeys:
		sys.stderr.write("Deleting invalid mtimedb key: "+str(x)+"\n")
		del mtimedb[x]


#,"porttree":portagetree(root,virts),"bintree":binarytree(root,virts)}
features=settings["FEATURES"].split()
portdb=portdbapi()


do_upgrade_packagesmessage=0
def do_upgrade(mykey):
	global do_upgrade_packagesmessage
	sys.stderr.write("\n\n")
	sys.stderr.write(green("Performing Global Updates: ")+bold(mykey)+"\n")
	sys.stderr.write("(Could take a couple minutes if you have a lot of binary packages.)\n")
	sys.stderr.write("  "+bold(".")+"='update pass'  "+bold("*")+"='binary update'  "+bold("@")+"='/var/db move'\n")
	processed=1
	#remove stale virtual entries (mappings for packages that no longer exist)
	myvirts=grabdict("/var/cache/edb/virtuals")
	
	worldlist=grabfile("/var/cache/edb/world")
	myupd=grabfile(mykey)
	db["/"]["bintree"]=binarytree("/",virts)
	for myline in myupd:
		mysplit=myline.split()
		if not len(mysplit):
			continue
		if mysplit[0]!="move":
			sys.stderr.write("portage: Update type \""+mysplit[0]+"\" not recognized.\n")
			processed=0
			continue
		if len(mysplit)!=3:
			sys.stderr.write("portage: Update command \""+myline+"\" invalid; skipping.\n")
			processed=0
			continue
		sys.stdout.write(".")
		sys.stdout.flush()
		db["/"]["vartree"].dbapi.move_ent(mysplit)
		db["/"]["bintree"].move_ent(mysplit)
		#update world entries:
		for x in range(0,len(worldlist)):
			#update world entries, if any.
			worldlist[x]=dep_transform(worldlist[x],mysplit[1],mysplit[2])
		
		#update virtuals:
		for myvirt in myvirts.keys():
			for mypos in range(0,len(myvirts[myvirt])):
				if myvirts[myvirt][mypos]==mysplit[1]:
					#update virtual to new name
					myvirts[myvirt][mypos]=mysplit[2]
	
	# We gotta do the brute force updates for these now.
	if (settings["PORTAGE_CALLER"] in ["fixpackages"]) or \
	   ("fixpackages" in features):
		db["/"]["bintree"].update_ents(myupd)
	else:
		do_upgrade_packagesmessage = 1
	
	if processed:
		#update our internal mtime since we processed all our directives.
		mtimedb["updates"][mykey]=os.stat(mykey)[ST_MTIME]
	myworld=open("/var/cache/edb/world","w")
	for x in