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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2008 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.24 2006/06/10 16:19:54 swegener Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.44 2008/08/29 19:28:08 hawking Exp $
4
5# @ECLASS: python.eclass
6# @MAINTAINER:
7# python@gentoo.org
4# 8#
5# Author: Alastair Tse <liquidx@gentoo.org> 9# original author: Alastair Tse <liquidx@gentoo.org>
6#
7# A Utility Eclass that should be inherited by anything that deals with 10# @BLURB: A Utility Eclass that should be inherited by anything that deals with Python or Python modules.
8# Python or Python modules. 11# @DESCRIPTION:
9# 12# Some useful functions for dealing with python.
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
20inherit alternatives 13inherit alternatives multilib
21 14
22 15
23if [[ -n "${NEED_PYTHON}" ]] ; then 16if [[ -n "${NEED_PYTHON}" ]] ; then
24 DEPEND=">=dev-lang/python-${NEED_PYTHON}" 17 DEPEND=">=dev-lang/python-${NEED_PYTHON}"
25 RDEPEND="${DEPEND}" 18 RDEPEND="${DEPEND}"
36 echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR" 29 echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
37 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO" 30 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
38 __python_version_extract 2.4 31 __python_version_extract 2.4
39 echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR" 32 echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
40 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO" 33 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
34 __python_version_extract 2.5b3
35 echo -n "2.5b3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
36 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
41} 37}
42 38
43# 39# @FUNCTION: python_disable_pyc
44# name: python_disable/enable_pyc 40# @DESCRIPTION:
45# desc: tells python not to automatically recompile modules to .pyc/.pyo 41# Tells python not to automatically recompile modules to .pyc/.pyo
46# even if the timestamps/version stamps don't match. this is 42# even if the timestamps/version stamps don't match. This is done
47# done to protect sandbox. 43# to protect sandbox.
48# 44#
49# note: supported by >=dev-lang/python-2.2.3-r3 only. 45# note: supported by >=dev-lang/python-2.2.3-r3 only.
50# 46#
51python_disable_pyc() { 47python_disable_pyc() {
52 export PYTHON_DONTCOMPILE=1 48 export PYTHON_DONTCOMPILE=1
53} 49}
54 50
51# @FUNCTION: python_enable_pyc
52# @DESCRIPTION:
53# Tells python to automatically recompile modules to .pyc/.pyo if the
54# timestamps/version stamps change
55python_enable_pyc() { 55python_enable_pyc() {
56 unset PYTHON_DONTCOMPILE 56 unset PYTHON_DONTCOMPILE
57} 57}
58 58
59python_disable_pyc 59python_disable_pyc
60 60
61# 61# @FUNCTION: python_version
62# name: python_version 62# @DESCRIPTION:
63# desc: run without arguments and it will export the version of python 63# Run without arguments and it will export the version of python
64# currently in use as $PYVER 64# currently in use as $PYVER; sets PYVER/PYVER_MAJOR/PYVER_MINOR
65#
66
67__python_version_extract() { 65__python_version_extract() {
68 verstr=$1 66 verstr=$1
69 export PYVER_MAJOR=${verstr:0:1} 67 export PYVER_MAJOR=${verstr:0:1}
70 export PYVER_MINOR=${verstr:2:1} 68 export PYVER_MINOR=${verstr:2:1}
69 if [ "${verstr:3}x" = ".x" ]; then
71 export PYVER_MICRO=${verstr:4} 70 export PYVER_MICRO=${verstr:4}
71 fi
72 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}" 72 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
73} 73}
74 74
75python_version() { 75python_version() {
76 [[ -n "${PYVER}" ]] && return 0
76 local tmpstr 77 local tmpstr
77 python=${python:-/usr/bin/python} 78 python=${python:-/usr/bin/python}
78 tmpstr="$(${python} -V 2>&1 )" 79 tmpstr="$(${python} -V 2>&1 )"
79 export PYVER_ALL="${tmpstr#Python }" 80 export PYVER_ALL="${tmpstr#Python }"
80 __python_version_extract $PYVER_ALL 81 __python_version_extract $PYVER_ALL
81} 82}
82 83
83# 84# @FUNCTION: python_get_libdir
84# name: python_makesym 85# @DESCRIPTION:
86# Run without arguments, returns the python library dir
87python_get_libdir() {
88 python_version
89 echo "/usr/$(get_libdir)/python${PYVER}"
90}
91
92# @FUNCTION: python_get_sitedir
93# @DESCRIPTION:
94# Run without arguments, returns the python site-packages dir
95python_get_sitedir() {
96 echo "$(python_get_libdir)/site-packages"
97}
98
99# @FUNCTION: python_makesym
100# @DESCRIPTION:
85# desc: run without arguments, it will create the /usr/bin/python symlinks 101# Run without arguments, it will create the /usr/bin/python symlinks
86# to the latest installed version 102# to the latest installed version
87#
88python_makesym() { 103python_makesym() {
89 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]" 104 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
90 alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]" 105 alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
91} 106}
92 107
93#
94# name: python_tkinter_exists 108# @FUNCTION: python_tkinter_exists
109# @DESCRIPTION:
95# desc: run without arguments, checks if python was compiled with Tkinter 110# Run without arguments, checks if python was compiled with Tkinter
96# support. If not, prints an error message and dies. 111# support. If not, prints an error message and dies.
97#
98python_tkinter_exists() { 112python_tkinter_exists() {
99 if ! python -c "import Tkinter" >/dev/null 2>&1; then 113 if ! python -c "import Tkinter" >/dev/null 2>&1; then
100 eerror "You need to recompile python with Tkinter support." 114 eerror "You need to recompile python with Tkinter support."
101 eerror "That means: USE='tcltk' emerge python" 115 eerror "Try adding: 'dev-lang/python tk'"
116 eerror "in to /etc/portage/package.use"
102 echo 117 echo
103 die "missing tkinter support with installed python" 118 die "missing tkinter support with installed python"
104 fi 119 fi
105} 120}
106 121
107# 122# @FUNCTION: python_mod_exists
108# name: python_mod_exists 123# @USAGE: < module >
124# @DESCRIPTION:
109# desc: run with the module name as an argument. it will check if a 125# Run with the module name as an argument. it will check if a
110# python module is installed and loadable. it will return 126# python module is installed and loadable. it will return
111# TRUE(0) if the module exists, and FALSE(1) if the module does 127# TRUE(0) if the module exists, and FALSE(1) if the module does
112# not exist. 128# not exist.
113# exam: 129#
130# Example:
114# if python_mod_exists gtk; then 131# if python_mod_exists gtk; then
115# echo "gtk support enabled 132# echo "gtk support enabled"
116# fi 133# fi
117#
118python_mod_exists() { 134python_mod_exists() {
119 [ -z "$1" ] && die "${FUNCTION} requires an argument!" 135 [ -z "$1" ] && die "${FUNCTION} requires an argument!"
120 if ! python -c "import $1" >/dev/null 2>&1; then 136 if ! python -c "import $1" >/dev/null 2>&1; then
121 return 1 137 return 1
122 fi 138 fi
123 return 0 139 return 0
124} 140}
125 141
126# 142# @FUNCTION: python_mod_compile
127# name: python_mod_compile 143# @USAGE: < file > [more files ...]
144# @DESCRIPTION:
128# desc: given a filename, it will pre-compile the module's .pyc and .pyo. 145# Given filenames, it will pre-compile the module's .pyc and .pyo.
129# should only be run in pkg_postinst() 146# This function should only be run in pkg_postinst()
130# exam: 147#
148# Example:
131# python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py 149# python_mod_compile /usr/lib/python2.3/site-packages/pygoogle.py
132# 150#
133python_mod_compile() { 151python_mod_compile() {
152 local f myroot
153
154 # Check if phase is pkg_postinst()
155 [[ ${EBUILD_PHASE} != postinst ]] &&\
156 die "${FUNCNAME} should only be run in pkg_postinst()"
157
134 # allow compiling for older python versions 158 # allow compiling for older python versions
135 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then 159 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
136 PYVER=${PYTHON_OVERRIDE_PYVER} 160 PYVER=${PYTHON_OVERRIDE_PYVER}
137 else 161 else
138 python_version 162 python_version
139 fi 163 fi
140 164
141 if [ -f "$1" ]; then
142 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
143 ewarn "Failed to compile ${1}"
144 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
145 ewarn "Failed to compile ${1}"
146 else
147 ewarn "Unable to find ${1}"
148 fi
149}
150
151#
152# name: python_mod_optimize
153# desc: if no arguments supplied, it will recompile all modules under
154# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
155# no recursively
156#
157# if supplied with arguments, it will recompile all modules recursively
158# in the supplied directory
159# exam:
160# python_mod_optimize ${ROOT}usr/share/codegen
161#
162python_mod_optimize() {
163 local myroot
164 # strip trailing slash 165 # strip trailing slash
165 myroot="${ROOT%/}" 166 myroot="${ROOT%/}"
167
168 # respect ROOT
169 for f in $@; do
170 [ -f "${myroot}/${f}" ] && myfiles="${myfiles} ${myroot}/${f}"
171 done
172
173 if [ -n "${myfiles}" ]; then
174 python${PYVER} ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py ${myfiles}
175 python${PYVER} -O ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py ${myfiles}
176 else
177 ewarn "No files to compile!"
178 fi
179}
180
181# @FUNCTION: python_mod_optimize
182# @USAGE: [ path ]
183# @DESCRIPTION:
184# If no arguments supplied, it will recompile all modules under
185# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
186# no recursively
187#
188# If supplied with arguments, it will recompile all modules recursively
189# in the supplied directory
190# This function should only be run in pkg_postinst()
191#
192# Options passed to this function are passed to compileall.py
193#
194# Example:
195# python_mod_optimize /usr/share/codegen
196python_mod_optimize() {
197 local mydirs myfiles myroot myopts
198
199 # Check if phase is pkg_postinst()
200 [[ ${EBUILD_PHASE} != postinst ]] &&\
201 die "${FUNCNAME} should only be run in pkg_postinst()"
202
203 # strip trailing slash
204 myroot="${ROOT%/}"
205
206 # respect ROOT and options passed to compileall.py
207 while [ $# -gt 0 ]; do
208 case $1 in
209 -l|-f|-q)
210 myopts="${myopts} $1"
211 ;;
212 -d|-x)
213 myopts="${myopts} $1 $2"
214 shift
215 ;;
216 -*)
217 ewarn "${FUNCNAME}: Ignoring compile option $1"
218 ;;
219 *)
220 [ ! -e "${myroot}/${1}" ] && ewarn "${myroot}/${1} doesn't exist!"
221 [ -d "${myroot}/${1#/}" ] && mydirs="${mydirs} ${myroot}/${1#/}"
222 # Files are passed to python_mod_compile which is ROOT-aware
223 [ -f "${myroot}/${1}" ] && myfiles="${myfiles} ${1}"
224 ;;
225 esac
226 shift
227 done
166 228
167 # allow compiling for older python versions 229 # allow compiling for older python versions
168 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then 230 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
169 PYVER=${PYTHON_OVERRIDE_PYVER} 231 PYVER=${PYTHON_OVERRIDE_PYVER}
170 else 232 else
171 python_version 233 python_version
172 fi 234 fi
173 235
174 # set opts 236 # set additional opts
175 if [ "${PYVER}" = "2.2" ]; then 237 myopts="${myopts} -q"
176 compileopts=""
177 else
178 compileopts="-q"
179 fi
180 238
181 ebegin "Byte compiling python modules for python-${PYVER} .." 239 ebegin "Byte compiling python modules for python-${PYVER} .."
182 python${PYVER} ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@ 240 if [ -n "${mydirs}" ]; then
183 python${PYVER} -O ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@ 241 python${PYVER} \
242 ${myroot}/usr/$(get_libdir)/python${PYVER}/compileall.py \
243 ${myopts} ${mydirs}
244 python${PYVER} -O \
245 ${myroot}/usr/$(get_libdir)/python${PYVER}/compileall.py \
246 ${myopts} ${mydirs}
247 fi
248
249 if [ -n "${myfiles}" ]; then
250 python_mod_compile ${myfiles}
251 fi
252
184 eend $? 253 eend $?
185} 254}
186 255
187# 256# @FUNCTION: python_mod_cleanup
188# name: python_mod_cleanup 257# @USAGE: [ dir ]
258# @DESCRIPTION:
189# desc: run with optional arguments, where arguments are directories of 259# Run with optional arguments, where arguments are directories of
190# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9] 260# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
191# 261#
192# it will recursively scan all compiled python modules in the directories 262# It will recursively scan all compiled python modules in the directories
193# and determine if they are orphaned (eg. their corresponding .py is missing.) 263# and determine if they are orphaned (eg. their corresponding .py is missing.)
194# if they are, then it will remove their corresponding .pyc and .pyo 264# if they are, then it will remove their corresponding .pyc and .pyo
195# 265#
266# This function should only be run in pkg_postrm()
196python_mod_cleanup() { 267python_mod_cleanup() {
197 local SEARCH_PATH myroot 268 local SEARCH_PATH myroot
269
270 # Check if phase is pkg_postrm()
271 [[ ${EBUILD_PHASE} != postrm ]] &&\
272 die "${FUNCNAME} should only be run in pkg_postrm()"
198 273
199 # strip trailing slash 274 # strip trailing slash
200 myroot="${ROOT%/}" 275 myroot="${ROOT%/}"
201 276
202 if [ $# -gt 0 ]; then 277 if [ $# -gt 0 ]; then
209 done 284 done
210 fi 285 fi
211 286
212 for path in ${SEARCH_PATH}; do 287 for path in ${SEARCH_PATH}; do
213 einfo "Cleaning orphaned Python bytecode from ${path} .." 288 einfo "Cleaning orphaned Python bytecode from ${path} .."
214 for obj in $(find ${path} -name *.pyc); do 289 for obj in $(find ${path} -name '*.py[co]'); do
215 src_py="${obj%c}" 290 src_py="${obj%[co]}"
216 if [ ! -f "${src_py}" ]; then 291 if [ ! -f "${src_py}" ]; then
217 einfo "Purging ${src_py}[co]" 292 einfo "Purging ${src_py}[co]"
218 rm -f ${src_py}[co] 293 rm -f ${src_py}[co]
219 fi 294 fi
220 done 295 done

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