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# Copyright 1999-2003 Gentoo Technologies, Inc.
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /home/cvsroot/gentoo-x86/eclass/python.eclass,v 1.5 2003/10/17 07:14:26 liquidx Exp $
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#
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# Author: Alastair Tse <liquidx@gentoo.org>
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#
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# A Utility Eclass that should be inherited by anything that deals with
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# Python or Python modules.
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#
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# - Features:
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# python_version() - sets PYVER/PYVER_MAJOR/PYVER_MINOR
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# python_tkinter_exists() - Checks for tkinter support in python
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# python_mod_exists() - Checks if a python module exists
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# python_mod_compile() - Compiles a .py file to a .pyc/.pyo
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# python_mod_optimize() - Generates .pyc/.pyo precompiled scripts
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# python_mod_cleanup() - Goes through /usr/lib/python* to remove
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# orphaned *.pyc *.pyo
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# python_makesym() - Makes /usr/bin/python symlinks
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inherit alternatives virtualx
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ECLASS="python"
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INHERITED="$INHERITED $ECLASS"
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#
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# name: python_disable/enable_pyc
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# desc: tells python not to automatically recompile modules to .pyc/.pyo
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# even if the timestamps/version stamps don't match. this is
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# done to protect sandbox.
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#
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# note: supported by >=dev-lang/python-2.2.3-r3 only.
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#
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python_disable_pyc() {
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export PYTHON_DONTCOMPILE=1
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}
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python_enable_pyc() {
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unset PYTHON_DONTCOMPILE
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}
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python_disable_pyc
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#
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# name: python_version
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# desc: run without arguments and it will export the version of python
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# currently in use as $PYVER
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#
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python_version() {
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local tmpstr
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python=${python:-/usr/bin/python}
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tmpstr="$(${python} -V 2>&1 )"
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export PYVER_ALL="${tmpstr#Python }"
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export PYVER_MAJOR=$(echo ${PYVER_ALL} | cut -d. -f1)
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export PYVER_MINOR=$(echo ${PYVER_ALL} | cut -d. -f2)
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export PYVER_MICRO=$(echo ${PYVER_ALL} | cut -d. -f3-)
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export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
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}
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#
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# name: python_makesym
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# desc: run without arguments, it will create the /usr/bin/python symlinks
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# to the latest installed version
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#
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python_makesym() {
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alternatives_auto_makesym "/usr/bin/python" "/usr/bin/python[0-9].[0-9]"
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alternatives_auto_makesym "/usr/bin/python2" "/usr/bin/python[0-9].[0-9]"
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}
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#
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# name: python_tkinter_exists
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# desc: run without arguments, it will return TRUE(0) if python is compiled
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# with tkinter or FALSE(1) if python is compiled without tkinter.
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#
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python_tkinter_exists() {
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if ! python -c "import Tkinter" >/dev/null 2>&1; then
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eerror "You need to recompile python with Tkinter support."
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eerror "That means: USE='tcltk' emerge python"
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echo
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die "missing tkinter support with installed python"
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fi
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}
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#
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# name: python_mod_exists
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# desc: run with the module name as an argument. it will check if a
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# python module is installed and loadable. it will return
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# TRUE(0) if the module exists, and FALSE(1) if the module does
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# not exist.
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#
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# note: we use virtualmake from virtualx.eclass to get around
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# when people build without X available. some packages like
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# pygtk need X avaiable when being imported.
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#
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# exam:
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# if python_mod_exists gtk; then
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# echo "gtk support enabled
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# fi
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#
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python_mod_exists() {
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export maketype="python"
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if ! virtualmake -c "import $1" >/dev/null 2>&1; then
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return 1
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fi
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return 0
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}
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#
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# name: python_mod_compile
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# desc: given a filename, it will pre-compile the module's .pyc and .pyo.
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# should only be run in pkg_postinst()
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# exam:
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# python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
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#
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python_mod_compile() {
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# allow compiling for older python versions
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if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
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PYVER=${PYTHON_OVERRIDE_PYVER}
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else
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python_version
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fi
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if [ -f "$1" ]; then
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python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
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ewarn "Failed to compile ${1}"
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python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
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ewarn "Failed to compile ${1}"
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else
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ewarn "Unable to find ${1}"
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fi
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}
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#
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# name: python_mod_optimize
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# desc: if no arguments supplied, it will recompile all modules under
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# sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
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# no recursively
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#
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# if supplied with arguments, it will recompile all modules recursively
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# in the supplied directory
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# exam:
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# python_mod_optimize ${ROOT}usr/share/codegen
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#
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python_mod_optimize() {
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# allow compiling for older python versions
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if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
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PYVER=${PYTHON_OVERRIDE_PYVER}
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else
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python_version
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fi
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# set opts
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if [ "${PYVER}" = "2.2" ]; then
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compileopts=""
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else
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compileopts="-q"
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fi
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ebegin "Byte Compiling Python modules for ${PYVER} .."
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python${PYVER} ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@
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python${PYVER} -O ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@
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eend $?
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}
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#
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# name: python_mod_cleanup
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# desc: run with optional arguments, where arguments are directories of
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# python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
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#
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# it will recursively scan all compiled python modules in the directories
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# and determine if they are orphaned (eg. their corresponding .py is missing.)
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# if they are, then it will remove their corresponding .pyc and .pyo
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#
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python_mod_cleanup() {
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local SEARCH_PATH
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if [ $# -gt 0 ]; then
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for path in $@; do
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SEARCH_PATH="${SEARCH_PATH} ${ROOT}${path#/}"
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done
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else
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for path in ${ROOT}usr/lib/python*/site-packages; do
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SEARCH_PATH="${SEARCH_PATH} ${path}"
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done
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fi
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for path in ${SEARCH_PATH}; do
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einfo "Searching ${path} .."
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for obj in $(find ${path} -name *.pyc | sort -r); do
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src_py="$(echo $obj | sed 's:c$::')"
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if [ ! -f "${src_py}" ]; then
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einfo "Purging ${src_py}[co]"
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rm -f ${src_py}[co]
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# clean up directory if it is empty
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current_dir="`dirname ${obj}`"
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if [ `ls -1 --color=none $current_dir | wc -l 2> /dev/null` -lt 1 ]; then
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rmdir -f ${current_dir}
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fi
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fi
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done
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done
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}
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