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Revision 1.1 - (show annotations) (download)
Wed Oct 8 14:07:38 2003 UTC (11 years, 2 months ago) by liquidx
Branch: MAIN
utility class for python and python related packages

1 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /home/cvsroot/gentoo-x86/eclass/distutils.eclass,v 1.15 2003/10/02 23:14:17 liquidx Exp $
4 #
5 # Author: Alastair Tse <liquidx@gentoo.org>
6 #
7 # A Utility Eclass that should be inherited by anything that deals with
8 # Python or Python modules.
9 #
10 # - Features:
11 # python_version() - sets PYVER/PYVER_MAJOR/PYVER_MINOR
12 # python_tkinter_exists() - Checks for tkinter support in python
13 # python_mod_exists() - Checks if a python module exists
14 # python_mod_compile() - Compiles a .py file to a .pyc/.pyo
15 # python_mod_optimize() - Generates .pyc/.pyo precompiled scripts
16 # python_mod_cleanup() - Goes through /usr/lib/python* to remove
17 # orphaned *.pyc *.pyo
18 # python_makesym() - Makes /usr/bin/python symlinks
19
20 inherit alternatives
21
22 ECLASS="python"
23 INHERITED="$INHERITED $ECLASS"
24
25 #
26 # name: python_version
27 # desc: run without arguments and it will export the version of python
28 # currently in use as $PYVER
29 #
30 python_version() {
31 local tmpstr
32 python=${python:-/usr/bin/python}
33 tmpstr="$(${python} -V 2>&1 )"
34 export PYVER_ALL="${tmpstr#Python }"
35
36 export PYVER_MAJOR=$(echo ${PYVER_ALL} | cut -d. -f1)
37 export PYVER_MINOR=$(echo ${PYVER_ALL} | cut -d. -f2)
38 export PYVER_MICRO=$(echo ${PYVER_ALL} | cut -d. -f3-)
39 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
40 }
41
42 #
43 # name: python_makesym
44 # desc: run without arguments, it will create the /usr/bin/python symlinks
45 # to the latest installed version
46 #
47 python_makesym() {
48 alternatives_auto_makesym "/usr/bin/python" "/usr/bin/python[0-9].[0-9]"
49 alternatives_auto_makesym "/usr/bin/python2" "/usr/bin/python[0-9].[0-9]"
50 }
51
52 #
53 # name: python_tkinter_exists
54 # desc: run without arguments, it will return TRUE(0) if python is compiled
55 # with tkinter or FALSE(1) if python is compiled without tkinter.
56 #
57 python_tkinter_exists() {
58 if ! python -c "import Tkinter" >/dev/null 2>&1; then
59 eerror "You need to recompile python with Tkinter support."
60 eerror "That means: USE='tcltk' emerge python"
61 echo
62 die "missing tkinter support with installed python"
63 fi
64 }
65
66 #
67 # name: python_mod_exists
68 # desc: run with the module name as an argument. it will check if a
69 # python module is installed and loadable. it will return
70 # TRUE(0) if the module exists, and FALSE(1) if the module does
71 # not exist.
72 # exam:
73 # if python_mod_exists gtk; then
74 # echo "gtk support enabled
75 # fi
76 #
77 python_mod_exists() {
78 if ! python -c "import $1" >/dev/null 2>&1; then
79 return 1
80 fi
81 return 0
82 }
83
84 #
85 # name: python_mod_compile
86 # desc: given a filename, it will pre-compile the module's .pyc and .pyo.
87 # should only be run in pkg_postinst()
88 # exam:
89 # python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
90 #
91 python_mod_compile() {
92 if [ -f "$1" ]; then
93 python -c "import py_compile; py_compile.compile('${1}')" || \
94 ewarn "Failed to compile ${1}"
95 python -O -c "import py_compile; py_compile.compile('${1}')" || \
96 ewarn "Failed to compile ${1}"
97 else
98 ewarn "Unable to find ${1}"
99 fi
100 }
101
102 #
103 # name: python_mod_optimize
104 # desc: if no arguments supplied, it will recompile all modules under
105 # sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
106 # no recursively
107 #
108 # if supplied with arguments, it will recompile all modules recursively
109 # in the supplied directory
110 # exam:
111 # python_mod_optimize ${ROOT}usr/share/codegen
112 #
113 python_mod_optimize() {
114 einfo "Byte Compiling Python modules .."
115 python_version
116 echo ${PYVER}
117 python ${ROOT}usr/lib/python${PYVER}/compileall.py $@
118 }
119
120 #
121 # name: python_mod_cleanup
122 # desc: run with optional arguments, where arguments are directories of
123 # python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
124 #
125 # it will recursively scan all compiled python modules in the directories
126 # and determine if they are orphaned (eg. their corresponding .py is missing.)
127 # if they are, then it will remove their corresponding .pyc and .pyo
128 #
129 python_mod_cleanup() {
130 local SEARCH_PATH
131
132 for path in $@; do
133 SEARCH_PATH="${SEARCH_PATH} ${ROOT}${dir}"
134 done
135
136 for path in ${ROOT}usr/lib/python*/site-packages; do
137 SEARCH_PATH="${SEARCH_PATH} ${path}"
138 done
139
140 for path in ${SEARCH_PATH}; do
141 einfo "Searching ${path} .."
142 for obj in $(find ${path} -name *.pyc); do
143 src_py="$(echo $obj | sed 's:c$::')"
144 if [ ! -f "${src_py}" ]; then
145 einfo "Purging ${src_py}[co]"
146 rm -f ${src_py}[co]
147 fi
148 done
149 done
150 }

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