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Revision 1.10 - (show annotations) (download)
Mon Nov 1 20:54:46 2010 UTC (3 years, 10 months ago) by slyfox
Branch: MAIN
Changes since 1.9: +10 -1 lines
darcs.eclass: export EDARCS_PATCHCOUNT: var shows amount of patches in pulled repository

This feature is requested for 'app-portage/smart-live-rebuild' program
(already provided by other SCM eclasses) (bug #343581)

Thre request and implementation hints by
Alexander Vershilov <alexander.vershilov@gmail.com>.
Implementation by Michał Górny <mgorny@gentoo.org>.

Thank you, guys!

1 # Copyright 2004 Gentoo Technologies, Inc.
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/darcs.eclass,v 1.9 2010/07/19 02:52:14 slyfox Exp $
4 #
5 # darcs eclass author: Andres Loeh <kosmikus@gentoo.org>
6 # tla eclass author: <rphillips@gentoo.org>
7 # Original Author: Jeffrey Yasskin <jyasskin@mail.utexas.edu>
8 #
9 # Originally derived from the tla eclass, which is derived from the
10 # cvs eclass.
11 #
12 # This eclass provides the generic darcs fetching functions.
13 # to use from an ebuild, set the 'ebuild-configurable settings' below in your
14 # ebuild before inheriting. then either leave the default src_unpack or extend
15 # over darcs_src_unpack.
16
17 # Most of the time, you will define only $EDARCS_REPOSITORY in your
18 # ebuild.
19
20 # TODO: support for tags, ...
21
22 inherit eutils # eshopts_{push,pop}
23
24 # Don't download anything other than the darcs repository
25 SRC_URI=""
26
27 # You shouldn't change these settings yourself! The ebuild/eclass inheriting
28 # this eclass will take care of that.
29
30 # --- begin ebuild-configurable settings
31
32 # darcs command to run
33 [ -z "$EDARCS_DARCS_CMD" ] && EDARCS_DARCS_CMD="darcs"
34
35 # darcs commands with command-specific options
36 [ -z "$EDARCS_GET_CMD" ] && EDARCS_GET_CMD="get --partial"
37 [ -z "$EDARCS_UPDATE_CMD" ] && EDARCS_UPDATE_CMD="pull"
38
39 # options to pass to both the "get" and "update" commands
40 [ -z "$EDARCS_OPTIONS" ] && EDARCS_OPTIONS="--set-scripts-executable"
41
42 # Where the darcs repositories are stored/accessed
43 [ -z "$EDARCS_TOP_DIR" ] && EDARCS_TOP_DIR="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/darcs-src"
44
45 # The URI to the repository.
46 [ -z "$EDARCS_REPOSITORY" ] && EDARCS_REPOSITORY=""
47
48
49 # EDARCS_CLEAN: set this to something to get a clean copy when updating
50 # (removes the working directory, then uses $EDARCS_GET_CMD to
51 # re-download it.)
52
53 # --- end ebuild-configurable settings ---
54
55 # add darcs to deps
56 DEPEND="dev-vcs/darcs"
57
58 darcs_patchcount() {
59 set -- $(${EDARCS_DARCS_CMD} show repo | grep "Num Patches")
60 # handle string like: " Num Patches: 3860"
61 echo ${3}
62 }
63
64 # is called from darcs_src_unpack
65 darcs_fetch() {
66
67 # The local directory to store the repository (useful to ensure a
68 # unique local name); relative to EDARCS_TOP_DIR
69 [ -z "$EDARCS_LOCALREPO" ] && [ -n "$EDARCS_REPOSITORY" ] \
70 && EDARCS_LOCALREPO=${EDARCS_REPOSITORY%/} \
71 && EDARCS_LOCALREPO=${EDARCS_LOCALREPO##*/}
72
73 debug-print-function $FUNCNAME $*
74
75 if [ -n "$EDARCS_CLEAN" ]; then
76 rm -rf $EDARCS_TOP_DIR/$EDARCS_LOCALREPO
77 fi
78
79 # create the top dir if needed
80 if [ ! -d "$EDARCS_TOP_DIR" ]; then
81 # note that the addwrite statements in this block are only there to allow creating EDARCS_TOP_DIR;
82 # we've already allowed writing inside it
83 # this is because it's simpler than trying to find out the parent path of the directory, which
84 # would need to be the real path and not a symlink for things to work (so we can't just remove
85 # the last path element in the string)
86 debug-print "$FUNCNAME: checkout mode. creating darcs directory"
87 addwrite /foobar
88 addwrite /
89 mkdir -p "$EDARCS_TOP_DIR"
90 export SANDBOX_WRITE="${SANDBOX_WRITE//:\/foobar:\/}"
91 fi
92
93 # in case EDARCS_DARCS_DIR is a symlink to a dir, get the real
94 # dir's path, otherwise addwrite() doesn't work.
95 pushd .
96 cd -P "$EDARCS_TOP_DIR" > /dev/null
97 EDARCS_TOP_DIR="`/bin/pwd`"
98
99 # disable the sandbox for this dir
100 addwrite "$EDARCS_TOP_DIR"
101
102 # determine checkout or update mode and change to the right directory.
103 if [ ! -d "$EDARCS_TOP_DIR/$EDARCS_LOCALREPO/_darcs" ]; then
104 mode=get
105 cd "$EDARCS_TOP_DIR"
106 else
107 mode=update
108 cd "$EDARCS_TOP_DIR/$EDARCS_LOCALREPO"
109 fi
110
111 # commands to run
112 local cmdget="${EDARCS_DARCS_CMD} ${EDARCS_GET_CMD} ${EDARCS_OPTIONS} --repo-name=${EDARCS_LOCALREPO} ${EDARCS_REPOSITORY}"
113 local cmdupdate="${EDARCS_DARCS_CMD} ${EDARCS_UPDATE_CMD} --all ${EDARCS_OPTIONS} ${EDARCS_REPOSITORY}"
114
115 if [ "${mode}" == "get" ]; then
116 einfo "Running $cmdget"
117 eval $cmdget || die "darcs get command failed"
118 elif [ "${mode}" == "update" ]; then
119 einfo "Running $cmdupdate"
120 eval $cmdupdate || die "darcs update command failed"
121 fi
122
123 export EDARCS_PATCHCOUNT=$(darcs_patchcount)
124 einfo " patches in repo: ${EDARCS_PATCHCOUNT}"
125
126 popd
127 }
128
129
130 darcs_src_unpack() {
131 # The local directory to store the repository (useful to ensure a
132 # unique local name); relative to EDARCS_TOP_DIR
133 [ -z "$EDARCS_LOCALREPO" ] && [ -n "$EDARCS_REPOSITORY" ] \
134 && EDARCS_LOCALREPO=${EDARCS_REPOSITORY%/} \
135 && EDARCS_LOCALREPO=${EDARCS_LOCALREPO##*/}
136
137 debug-print-function $FUNCNAME $*
138
139 debug-print "$FUNCNAME: init:
140 EDARCS_DARCS_CMD=$EDARCS_DARCS_CMD
141 EDARCS_GET_CMD=$EDARCS_GET_CMD
142 EDARCS_UPDATE_CMD=$EDARCS_UPDATE_CMD
143 EDARCS_OPTIONS=$EDARCS_OPTIONS
144 EDARCS_TOP_DIR=$EDARCS_TOP_DIR
145 EDARCS_REPOSITORY=$EDARCS_REPOSITORY
146 EDARCS_LOCALREPO=$EDARCS_LOCALREPO
147 EDARCS_CLEAN=$EDARCS_CLEAN"
148
149 einfo "Fetching darcs repository $EDARCS_REPOSITORY into $EDARCS_TOP_DIR..."
150 darcs_fetch
151
152 einfo "Copying $EDARCS_LOCALREPO from $EDARCS_TOP_DIR..."
153 debug-print "Copying $EDARCS_LOCALREPO from $EDARCS_TOP_DIR..."
154
155 # probably redundant, but best to make sure
156 # Use ${WORKDIR}/${P} rather than ${S} so user can point ${S} to something inside.
157 mkdir -p "${WORKDIR}/${P}"
158
159 eshopts_push -s dotglob # get any dotfiles too.
160 rsync -rlpgo --exclude="_darcs/" "$EDARCS_TOP_DIR/$EDARCS_LOCALREPO"/* "${WORKDIR}/${P}"
161 eshopts_pop
162
163 einfo "Darcs repository contents are now in ${WORKDIR}/${P}"
164
165 }
166
167 EXPORT_FUNCTIONS src_unpack

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