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Revision 1.3 Revision 1.54
1# Copyright 1999-2003 Gentoo Technologies, Inc. 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 1.3 2003/10/09 08:57:20 liquidx Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.54 2008/10/30 05:21:46 zmedico 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
22ECLASS="python"
23INHERITED="$INHERITED $ECLASS"
24 15
25python_disable_pyc() { 16if [[ -n "${NEED_PYTHON}" ]] ; then
26 export PYTHON_DONTCOMPILE=1 17 DEPEND=">=dev-lang/python-${NEED_PYTHON}"
27} 18 RDEPEND="${DEPEND}"
19fi
28 20
29# 21__python_eclass_test() {
30# name: python_version 22 __python_version_extract 2.3
23 echo -n "2.3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
24 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
25 __python_version_extract 2.3.4
26 echo -n "2.3.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
27 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
28 __python_version_extract 2.3.5
29 echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
30 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
31 __python_version_extract 2.4
32 echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
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"
37}
38
39# @FUNCTION: python_version
40# @DESCRIPTION:
31# desc: run without arguments and it will export the version of python 41# Run without arguments and it will export the version of python
32# currently in use as $PYVER 42# currently in use as $PYVER; sets PYVER/PYVER_MAJOR/PYVER_MINOR
33# 43__python_version_extract() {
44 local verstr=$1
45 export PYVER_MAJOR=${verstr:0:1}
46 export PYVER_MINOR=${verstr:2:1}
47 if [[ ${verstr:3:1} == . ]]; then
48 export PYVER_MICRO=${verstr:4}
49 fi
50 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
51}
52
34python_version() { 53python_version() {
54 [[ -n "${PYVER}" ]] && return 0
35 local tmpstr 55 local tmpstr
36 python=${python:-/usr/bin/python} 56 python=${python:-/usr/bin/python}
37 tmpstr="$(${python} -V 2>&1 )" 57 tmpstr="$(${python} -V 2>&1 )"
38 export PYVER_ALL="${tmpstr#Python }" 58 export PYVER_ALL="${tmpstr#Python }"
39 59 __python_version_extract $PYVER_ALL
40 export PYVER_MAJOR=$(echo ${PYVER_ALL} | cut -d. -f1)
41 export PYVER_MINOR=$(echo ${PYVER_ALL} | cut -d. -f2)
42 export PYVER_MICRO=$(echo ${PYVER_ALL} | cut -d. -f3-)
43 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
44} 60}
45 61
62# @FUNCTION: python_disable_pyc
63# @DESCRIPTION:
64# Tells python not to automatically recompile modules to .pyc/.pyo
65# even if the timestamps/version stamps don't match. This is done
66# to protect sandbox.
46# 67#
47# name: python_makesym 68# note: supported by >=dev-lang/python-2.2.3-r3 only.
69#
70python_disable_pyc() {
71 export PYTHONDONTWRITEBYTECODE=1 # For 2.6 and above
72 export PYTHON_DONTCOMPILE=1 # For 2.5 and below
73}
74
75# @FUNCTION: python_enable_pyc
76# @DESCRIPTION:
77# Tells python to automatically recompile modules to .pyc/.pyo if the
78# timestamps/version stamps change
79python_enable_pyc() {
80 unset PYTHONDONTWRITEBYTECODE
81 unset PYTHON_DONTCOMPILE
82}
83
84python_disable_pyc
85
86# @FUNCTION: python_need_rebuild
87# @DESCRIPTION: Run without arguments, specifies that the package should be
88# rebuilt after a python upgrade.
89python_need_rebuild() {
90 python_version
91 export PYTHON_NEED_REBUILD=${PYVER}
92}
93
94# @FUNCTION: python_get_libdir
95# @DESCRIPTION:
96# Run without arguments, returns the python library dir
97python_get_libdir() {
98 python_version
99 echo "/usr/$(get_libdir)/python${PYVER}"
100}
101
102# @FUNCTION: python_get_sitedir
103# @DESCRIPTION:
104# Run without arguments, returns the python site-packages dir
105python_get_sitedir() {
106 echo "$(python_get_libdir)/site-packages"
107}
108
109# @FUNCTION: python_makesym
110# @DESCRIPTION:
48# desc: run without arguments, it will create the /usr/bin/python symlinks 111# Run without arguments, it will create the /usr/bin/python symlinks
49# to the latest installed version 112# to the latest installed version
50#
51python_makesym() { 113python_makesym() {
52 alternatives_auto_makesym "/usr/bin/python" "/usr/bin/python[0-9].[0-9]" 114 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
53 alternatives_auto_makesym "/usr/bin/python2" "/usr/bin/python[0-9].[0-9]" 115 alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
54} 116}
55 117
56#
57# name: python_tkinter_exists 118# @FUNCTION: python_tkinter_exists
58# desc: run without arguments, it will return TRUE(0) if python is compiled 119# @DESCRIPTION:
59# with tkinter or FALSE(1) if python is compiled without tkinter. 120# Run without arguments, checks if python was compiled with Tkinter
60# 121# support. If not, prints an error message and dies.
61python_tkinter_exists() { 122python_tkinter_exists() {
62 if ! python -c "import Tkinter" >/dev/null 2>&1; then 123 if ! python -c "import Tkinter" >/dev/null 2>&1; then
63 eerror "You need to recompile python with Tkinter support." 124 eerror "You need to recompile python with Tkinter support."
64 eerror "That means: USE='tcltk' emerge python" 125 eerror "Try adding: 'dev-lang/python tk'"
126 eerror "in to /etc/portage/package.use"
65 echo 127 echo
66 die "missing tkinter support with installed python" 128 die "missing tkinter support with installed python"
67 fi 129 fi
68} 130}
69 131
70# 132# @FUNCTION: python_mod_exists
71# name: python_mod_exists 133# @USAGE: < module >
134# @DESCRIPTION:
72# desc: run with the module name as an argument. it will check if a 135# Run with the module name as an argument. it will check if a
73# python module is installed and loadable. it will return 136# python module is installed and loadable. it will return
74# TRUE(0) if the module exists, and FALSE(1) if the module does 137# TRUE(0) if the module exists, and FALSE(1) if the module does
75# not exist. 138# not exist.
76# exam: 139#
140# Example:
77# if python_mod_exists gtk; then 141# if python_mod_exists gtk; then
78# echo "gtk support enabled 142# echo "gtk support enabled"
79# fi 143# fi
80#
81python_mod_exists() { 144python_mod_exists() {
145 [[ "$1" ]] || die "${FUNCNAME} requires an argument!"
82 if ! python -c "import $1" >/dev/null 2>&1; then 146 python -c "import $1" >/dev/null 2>&1
83 return 1
84 fi
85 return 0
86} 147}
87 148
88# 149# @FUNCTION: python_mod_compile
89# name: python_mod_compile 150# @USAGE: < file > [more files ...]
151# @DESCRIPTION:
90# desc: given a filename, it will pre-compile the module's .pyc and .pyo. 152# Given filenames, it will pre-compile the module's .pyc and .pyo.
91# should only be run in pkg_postinst() 153# This function should only be run in pkg_postinst()
92# exam: 154#
155# Example:
93# python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py 156# python_mod_compile /usr/lib/python2.3/site-packages/pygoogle.py
94# 157#
95python_mod_compile() { 158python_mod_compile() {
96 if [ -f "$1" ]; then 159 local f myroot myfiles=()
97 python -c "import py_compile; py_compile.compile('${1}')" || \ 160
98 ewarn "Failed to compile ${1}" 161 # Check if phase is pkg_postinst()
99 python -O -c "import py_compile; py_compile.compile('${1}')" || \ 162 [[ ${EBUILD_PHASE} != postinst ]] &&\
100 ewarn "Failed to compile ${1}" 163 die "${FUNCNAME} should only be run in pkg_postinst()"
164
165 # allow compiling for older python versions
166 if [[ "${PYTHON_OVERRIDE_PYVER}" ]]; then
167 PYVER=${PYTHON_OVERRIDE_PYVER}
101 else 168 else
102 ewarn "Unable to find ${1}" 169 python_version
103 fi 170 fi
104}
105 171
106# 172 # strip trailing slash
173 myroot="${ROOT%/}"
174
175 # respect ROOT
176 for f in "$@"; do
177 [[ -f "${myroot}/${f}" ]] && myfiles+=("${myroot}/${f}")
178 done
179
180 if ((${#myfiles[@]})); then
181 python${PYVER} ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py "${myfiles[@]}"
182 python${PYVER} -O ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py "${myfiles[@]}"
183 else
184 ewarn "No files to compile!"
185 fi
186}
187
107# name: python_mod_optimize 188# @FUNCTION: python_mod_optimize
189# @USAGE: [ path ]
190# @DESCRIPTION:
108# desc: if no arguments supplied, it will recompile all modules under 191# If no arguments supplied, it will recompile all modules under
109# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..) 192# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
110# no recursively 193# no recursively
111# 194#
112# if supplied with arguments, it will recompile all modules recursively 195# If supplied with arguments, it will recompile all modules recursively
113# in the supplied directory 196# in the supplied directory
114# exam: 197# This function should only be run in pkg_postinst()
198#
199# Options passed to this function are passed to compileall.py
200#
201# Example:
115# python_mod_optimize ${ROOT}usr/share/codegen 202# python_mod_optimize /usr/share/codegen
116#
117python_mod_optimize() { 203python_mod_optimize() {
118 einfo "Byte Compiling Python modules .." 204 local myroot mydirs=() myfiles=() myopts=()
205
206 # Check if phase is pkg_postinst()
207 [[ ${EBUILD_PHASE} != postinst ]] &&\
208 die "${FUNCNAME} should only be run in pkg_postinst()"
209
210 # strip trailing slash
211 myroot="${ROOT%/}"
212
213 # respect ROOT and options passed to compileall.py
214 while (($#)); do
215 case $1 in
216 -l|-f|-q)
217 myopts+=("$1")
218 ;;
219 -d|-x)
220 myopts+=("$1" "$2")
221 shift
222 ;;
223 -*)
224 ewarn "${FUNCNAME}: Ignoring compile option $1"
225 ;;
226 *)
227 if [[ -d "${myroot}"/$1 ]]; then
228 mydirs+=("${myroot}/$1")
229 elif [[ -f "${myroot}"/$1 ]]; then
230 # Files are passed to python_mod_compile which is ROOT-aware
231 myfiles+=("$1")
232 elif [[ -e "${myroot}/$1" ]]; then
233 ewarn "${myroot}/$1 is not a file or directory!"
234 else
235 ewarn "${myroot}/$1 doesn't exist!"
236 fi
237 ;;
238 esac
239 shift
240 done
241
242 # allow compiling for older python versions
243 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
244 PYVER=${PYTHON_OVERRIDE_PYVER}
245 else
119 python_version 246 python_version
120 echo ${PYVER} 247 fi
121 python ${ROOT}usr/lib/python${PYVER}/compileall.py $@
122}
123 248
124# 249 # set additional opts
125# name: python_mod_cleanup 250 myopts+=(-q)
251
252 ebegin "Byte compiling python modules for python-${PYVER} .."
253 if ((${#mydirs[@]})); then
254 python${PYVER} \
255 "${myroot}"/usr/$(get_libdir)/python${PYVER}/compileall.py \
256 "${myopts[@]}" "${mydirs[@]}"
257 python${PYVER} -O \
258 "${myroot}"/usr/$(get_libdir)/python${PYVER}/compileall.py \
259 "${myopts[@]}" "${mydirs[@]}"
260 fi
261
262 if ((${#myfiles[@]})); then
263 python_mod_compile "${myfiles[@]}"
264 fi
265
266 eend $?
267}
268
269# @FUNCTION: python_mod_cleanup
270# @USAGE: [ dir ]
271# @DESCRIPTION:
126# desc: run with optional arguments, where arguments are directories of 272# Run with optional arguments, where arguments are directories of
127# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9] 273# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
128# 274#
129# it will recursively scan all compiled python modules in the directories 275# It will recursively scan all compiled python modules in the directories
130# and determine if they are orphaned (eg. their corresponding .py is missing.) 276# and determine if they are orphaned (eg. their corresponding .py is missing.)
131# if they are, then it will remove their corresponding .pyc and .pyo 277# if they are, then it will remove their corresponding .pyc and .pyo
132# 278#
279# This function should only be run in pkg_postrm()
133python_mod_cleanup() { 280python_mod_cleanup() {
134 local SEARCH_PATH 281 local SEARCH_PATH=() myroot src_py
135 282
136 for path in $@; do 283 # Check if phase is pkg_postrm()
137 SEARCH_PATH="${SEARCH_PATH} ${ROOT}${dir}" 284 [[ ${EBUILD_PHASE} != postrm ]] &&\
285 die "${FUNCNAME} should only be run in pkg_postrm()"
286
287 # strip trailing slash
288 myroot="${ROOT%/}"
289
290 if (($#)); then
291 SEARCH_PATH=("${@#/}")
292 SEARCH_PATH=("${SEARCH_PATH[@]/#/$myroot/}")
293 else
294 SEARCH_PATH=("${myroot}"/usr/lib*/python*/site-packages)
295 fi
296
297 for path in "${SEARCH_PATH[@]}"; do
298 einfo "Cleaning orphaned Python bytecode from ${path} .."
299 find "${path}" -name '*.py[co]' -print0 | while read -rd ''; do
300 src_py="${REPLY%[co]}"
301 [[ -f "${src_py}" ]] && continue
302 einfo "Purging ${src_py}[co]"
303 rm -f "${src_py}"[co]
138 done 304 done
139 305
140 for path in ${ROOT}usr/lib/python*/site-packages; do 306 # attempt to remove directories that maybe empty
141 SEARCH_PATH="${SEARCH_PATH} ${path}" 307 find "${path}" -type d | sort -r | while read -r dir; do
308 rmdir "${dir}" 2>/dev/null
309 done
142 done 310 done
143
144 for path in ${SEARCH_PATH}; do
145 einfo "Searching ${path} .."
146 for obj in $(find ${path} -name *.pyc); do
147 src_py="$(echo $obj | sed 's:c$::')"
148 if [ ! -f "${src_py}" ]; then
149 einfo "Purging ${src_py}[co]"
150 rm -f ${src_py}[co]
151 fi
152 done
153 done
154} 311}
155
156

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