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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 1.7 2003/10/24 07:12:42 pythonhead Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.52 2008/10/27 00:17:28 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
22ECLASS="python"
23INHERITED="$INHERITED $ECLASS"
24 15
25# 16if [[ -n "${NEED_PYTHON}" ]] ; then
26# name: python_disable/enable_pyc 17 DEPEND=">=dev-lang/python-${NEED_PYTHON}"
27# desc: tells python not to automatically recompile modules to .pyc/.pyo 18 RDEPEND="${DEPEND}"
28# even if the timestamps/version stamps don't match. this is 19fi
29# done to protect sandbox.
30#
31# note: supported by >=dev-lang/python-2.2.3-r3 only.
32#
33python_disable_pyc() {
34 export PYTHON_DONTCOMPILE=1
35}
36 20
37python_enable_pyc() { 21__python_eclass_test() {
38 unset PYTHON_DONTCOMPILE 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"
39} 37}
40 38
41python_disable_pyc 39# @FUNCTION: python_version
42 40# @DESCRIPTION:
43#
44# name: python_version
45# desc: run without arguments and it will export the version of python 41# Run without arguments and it will export the version of python
46# currently in use as $PYVER 42# currently in use as $PYVER; sets PYVER/PYVER_MAJOR/PYVER_MINOR
47# 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
48python_version() { 53python_version() {
54 [[ -n "${PYVER}" ]] && return 0
49 local tmpstr 55 local tmpstr
50 python=${python:-/usr/bin/python} 56 python=${python:-/usr/bin/python}
51 tmpstr="$(${python} -V 2>&1 )" 57 tmpstr="$(${python} -V 2>&1 )"
52 export PYVER_ALL="${tmpstr#Python }" 58 export PYVER_ALL="${tmpstr#Python }"
53 59 __python_version_extract $PYVER_ALL
54 export PYVER_MAJOR=$(echo ${PYVER_ALL} | cut -d. -f1)
55 export PYVER_MINOR=$(echo ${PYVER_ALL} | cut -d. -f2)
56 export PYVER_MICRO=$(echo ${PYVER_ALL} | cut -d. -f3-)
57 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
58} 60}
59 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.
60# 67#
61# name: python_makesym 68# note: supported by >=dev-lang/python-2.2.3-r3 only.
69#
70python_disable_pyc() {
71 python_version
72 if [[ ${PYVER/./,} -ge 2,6 ]]; then
73 export PYTHONDONTWRITEBYTECODE=1
74 else
75 export PYTHON_DONTCOMPILE=1
76 fi
77}
78
79# @FUNCTION: python_enable_pyc
80# @DESCRIPTION:
81# Tells python to automatically recompile modules to .pyc/.pyo if the
82# timestamps/version stamps change
83python_enable_pyc() {
84 python_version
85 if [[ ${PYVER/./,} -ge 2,6 ]]; then
86 unset PYTHONDONTWRITEBYTECODE
87 else
88 unset PYTHON_DONTCOMPILE
89 fi
90}
91
92python_disable_pyc
93
94# @FUNCTION: python_need_rebuild
95# @DESCRIPTION: Run without arguments, specifies that the package should be
96# rebuilt after a python upgrade.
97python_need_rebuild() {
98 python_version
99 export PYTHON_NEED_REBUILD=${PYVER}
100}
101
102# @FUNCTION: python_get_libdir
103# @DESCRIPTION:
104# Run without arguments, returns the python library dir
105python_get_libdir() {
106 python_version
107 echo "/usr/$(get_libdir)/python${PYVER}"
108}
109
110# @FUNCTION: python_get_sitedir
111# @DESCRIPTION:
112# Run without arguments, returns the python site-packages dir
113python_get_sitedir() {
114 echo "$(python_get_libdir)/site-packages"
115}
116
117# @FUNCTION: python_makesym
118# @DESCRIPTION:
62# desc: run without arguments, it will create the /usr/bin/python symlinks 119# Run without arguments, it will create the /usr/bin/python symlinks
63# to the latest installed version 120# to the latest installed version
64#
65python_makesym() { 121python_makesym() {
66 alternatives_auto_makesym "/usr/bin/python" "/usr/bin/python[0-9].[0-9]" 122 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
67 alternatives_auto_makesym "/usr/bin/python2" "/usr/bin/python[0-9].[0-9]" 123 alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
68} 124}
69 125
70#
71# name: python_tkinter_exists 126# @FUNCTION: python_tkinter_exists
72# desc: run without arguments, it will return TRUE(0) if python is compiled 127# @DESCRIPTION:
73# with tkinter or FALSE(1) if python is compiled without tkinter. 128# Run without arguments, checks if python was compiled with Tkinter
74# 129# support. If not, prints an error message and dies.
75python_tkinter_exists() { 130python_tkinter_exists() {
76 if ! python -c "import Tkinter" >/dev/null 2>&1; then 131 if ! python -c "import Tkinter" >/dev/null 2>&1; then
77 eerror "You need to recompile python with Tkinter support." 132 eerror "You need to recompile python with Tkinter support."
78 eerror "That means: USE='tcltk' emerge python" 133 eerror "Try adding: 'dev-lang/python tk'"
134 eerror "in to /etc/portage/package.use"
79 echo 135 echo
80 die "missing tkinter support with installed python" 136 die "missing tkinter support with installed python"
81 fi 137 fi
82} 138}
83 139
84# 140# @FUNCTION: python_mod_exists
85# name: python_mod_exists 141# @USAGE: < module >
142# @DESCRIPTION:
86# desc: run with the module name as an argument. it will check if a 143# Run with the module name as an argument. it will check if a
87# python module is installed and loadable. it will return 144# python module is installed and loadable. it will return
88# TRUE(0) if the module exists, and FALSE(1) if the module does 145# TRUE(0) if the module exists, and FALSE(1) if the module does
89# not exist. 146# not exist.
90# exam: 147#
148# Example:
91# if python_mod_exists gtk; then 149# if python_mod_exists gtk; then
92# echo "gtk support enabled 150# echo "gtk support enabled"
93# fi 151# fi
94#
95python_mod_exists() { 152python_mod_exists() {
153 [[ "$1" ]] && die "${FUNCNAME} requires an argument!"
96 if ! python -c "import $1" >/dev/null 2>&1; then 154 python -c "import $1" >/dev/null 2>&1
97 return 1
98 fi
99 return 0
100} 155}
101 156
102# 157# @FUNCTION: python_mod_compile
103# name: python_mod_compile 158# @USAGE: < file > [more files ...]
159# @DESCRIPTION:
104# desc: given a filename, it will pre-compile the module's .pyc and .pyo. 160# Given filenames, it will pre-compile the module's .pyc and .pyo.
105# should only be run in pkg_postinst() 161# This function should only be run in pkg_postinst()
106# exam: 162#
163# Example:
107# python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py 164# python_mod_compile /usr/lib/python2.3/site-packages/pygoogle.py
108# 165#
109python_mod_compile() { 166python_mod_compile() {
167 local f myroot myfiles=()
168
169 # Check if phase is pkg_postinst()
170 [[ ${EBUILD_PHASE} != postinst ]] &&\
171 die "${FUNCNAME} should only be run in pkg_postinst()"
172
173 # allow compiling for older python versions
174 if [[ "${PYTHON_OVERRIDE_PYVER}" ]]; then
175 PYVER=${PYTHON_OVERRIDE_PYVER}
176 else
177 python_version
178 fi
179
180 # strip trailing slash
181 myroot="${ROOT%/}"
182
183 # respect ROOT
184 for f in "$@"; do
185 [[ -f "${myroot}/${f}" ]] && myfiles+=("${myroot}/${f}")
186 done
187
188 if ((${#myfiles[@]})); then
189 python${PYVER} ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py "${myfiles[@]}"
190 python${PYVER} -O ${myroot}/usr/$(get_libdir)/python${PYVER}/py_compile.py "${myfiles[@]}"
191 else
192 ewarn "No files to compile!"
193 fi
194}
195
196# @FUNCTION: python_mod_optimize
197# @USAGE: [ path ]
198# @DESCRIPTION:
199# If no arguments supplied, it will recompile all modules under
200# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
201# no recursively
202#
203# If supplied with arguments, it will recompile all modules recursively
204# in the supplied directory
205# This function should only be run in pkg_postinst()
206#
207# Options passed to this function are passed to compileall.py
208#
209# Example:
210# python_mod_optimize /usr/share/codegen
211python_mod_optimize() {
212 local myroot mydirs=() myfiles=() myopts=()
213
214 # Check if phase is pkg_postinst()
215 [[ ${EBUILD_PHASE} != postinst ]] &&\
216 die "${FUNCNAME} should only be run in pkg_postinst()"
217
218 # strip trailing slash
219 myroot="${ROOT%/}"
220
221 # respect ROOT and options passed to compileall.py
222 while (($#)); do
223 case $1 in
224 -l|-f|-q)
225 myopts+=("$1")
226 ;;
227 -d|-x)
228 myopts+=("$1" "$2")
229 shift
230 ;;
231 -*)
232 ewarn "${FUNCNAME}: Ignoring compile option $1"
233 ;;
234 *)
235 if [[ -d "${myroot}"/$1 ]]; then
236 mydirs+=("${myroot}/$1")
237 elif [[ -f "${myroot}"/$1 ]]; then
238 # Files are passed to python_mod_compile which is ROOT-aware
239 myfiles+=("$1")
240 elif [[ -e "${myroot}/$1" ]]; then
241 ewarn "${myroot}/$1 is not a file or directory!"
242 else
243 ewarn "${myroot}/$1 doesn't exist!"
244 fi
245 ;;
246 esac
247 shift
248 done
249
110 # allow compiling for older python versions 250 # allow compiling for older python versions
111 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then 251 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
112 PYVER=${PYTHON_OVERRIDE_PYVER} 252 PYVER=${PYTHON_OVERRIDE_PYVER}
113 else 253 else
114 python_version 254 python_version
115 fi 255 fi
116 256
117 if [ -f "$1" ]; then 257 # set additional opts
118 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \ 258 myopts+=(-q)
119 ewarn "Failed to compile ${1}"
120 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
121 ewarn "Failed to compile ${1}"
122 else
123 ewarn "Unable to find ${1}"
124 fi
125}
126 259
127#
128# name: python_mod_optimize
129# desc: if no arguments supplied, it will recompile all modules under
130# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
131# no recursively
132#
133# if supplied with arguments, it will recompile all modules recursively
134# in the supplied directory
135# exam:
136# python_mod_optimize ${ROOT}usr/share/codegen
137#
138python_mod_optimize() {
139 # allow compiling for older python versions
140 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
141 PYVER=${PYTHON_OVERRIDE_PYVER}
142 else
143 python_version
144 fi
145
146 # set opts
147 if [ "${PYVER}" = "2.2" ]; then
148 compileopts=""
149 else
150 compileopts="-q"
151 fi
152
153 ebegin "Byte Compiling Python modules for ${PYVER} .." 260 ebegin "Byte compiling python modules for python-${PYVER} .."
154 python${PYVER} ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@ 261 if ((${#mydirs[@]})); then
155 python${PYVER} -O ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@ 262 python${PYVER} \
263 "${myroot}"/usr/$(get_libdir)/python${PYVER}/compileall.py \
264 "${myopts[@]}" "${mydirs[@]}"
265 python${PYVER} -O \
266 "${myroot}"/usr/$(get_libdir)/python${PYVER}/compileall.py \
267 "${myopts[@]}" "${mydirs[@]}"
268 fi
269
270 if ((${#myfiles[@]})); then
271 python_mod_compile "${myfiles[@]}"
272 fi
273
156 eend $? 274 eend $?
157} 275}
158 276
159# 277# @FUNCTION: python_mod_cleanup
160# name: python_mod_cleanup 278# @USAGE: [ dir ]
279# @DESCRIPTION:
161# desc: run with optional arguments, where arguments are directories of 280# Run with optional arguments, where arguments are directories of
162# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9] 281# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
163# 282#
164# it will recursively scan all compiled python modules in the directories 283# It will recursively scan all compiled python modules in the directories
165# and determine if they are orphaned (eg. their corresponding .py is missing.) 284# and determine if they are orphaned (eg. their corresponding .py is missing.)
166# if they are, then it will remove their corresponding .pyc and .pyo 285# if they are, then it will remove their corresponding .pyc and .pyo
167# 286#
287# This function should only be run in pkg_postrm()
168python_mod_cleanup() { 288python_mod_cleanup() {
169 local SEARCH_PATH 289 local SEARCH_PATH=() myroot src_py
170 290
171 if [ $# -gt 0 ]; then 291 # Check if phase is pkg_postrm()
172 for path in $@; do 292 [[ ${EBUILD_PHASE} != postrm ]] &&\
173 SEARCH_PATH="${SEARCH_PATH} ${ROOT}${path#/}" 293 die "${FUNCNAME} should only be run in pkg_postrm()"
174 done 294
175 else 295 # strip trailing slash
176 for path in ${ROOT}usr/lib/python*/site-packages; do 296 myroot="${ROOT%/}"
297
298 if (($#)); then
299 SEARCH_PATH=("${@#/}")
177 SEARCH_PATH="${SEARCH_PATH} ${path}" 300 SEARCH_PATH=("${SEARCH_PATH[@]/#/$myroot/}")
178 done 301 else
302 SEARCH_PATH=("${myroot}"/usr/lib*/python*/site-packages)
179 fi 303 fi
180 304
181 for path in ${SEARCH_PATH}; do 305 for path in "${SEARCH_PATH[@]}"; do
182 einfo "Searching ${path} .." 306 einfo "Cleaning orphaned Python bytecode from ${path} .."
183 for obj in $(find ${path} -name *.pyc); do 307 while read -rd ''; do
184 src_py="$(echo $obj | sed 's:c$::')" 308 src_py="${REPLY%[co]}"
185 if [ ! -f "${src_py}" ]; then 309 [[ -f "${src_py}" ]] && continue
186 einfo "Purging ${src_py}[co]" 310 einfo "Purging ${src_py}[co]"
187 rm -f ${src_py}[co] 311 rm -f "${src_py}"[co]
188 fi 312 done < <(find "${path}" -name '*.py[co]' -print0)
189 done 313
314 # attempt to remove directories that maybe empty
315 while read -r dir; do
316 rmdir "${dir}" 2>/dev/null
317 done < <(find "${path}" -type d | sort -r)
190 done 318 done
191} 319}
192
193

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