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Revision 1.12 - (hide annotations) (download)
Mon Dec 8 19:02:14 2003 UTC (10 years, 8 months ago) by liquidx
Branch: MAIN
Changes since 1.11: +5 -1 lines
remove empty directories when cleaning up

1 liquidx 1.1 # Copyright 1999-2003 Gentoo Technologies, Inc.
2     # Distributed under the terms of the GNU General Public License v2
3 liquidx 1.12 # $Header: /home/cvsroot/gentoo-x86/eclass/python.eclass,v 1.11 2003/12/08 17:39:24 liquidx Exp $
4 liquidx 1.1 #
5     # Author: Alastair Tse <liquidx@gentoo.org>
6     #
7     # A Utility Eclass that should be inherited by anything that deals with
8     # Python or Python modules.
9     #
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    
20 pythonhead 1.7 inherit alternatives
21 liquidx 1.1
22     ECLASS="python"
23     INHERITED="$INHERITED $ECLASS"
24 liquidx 1.2
25 liquidx 1.5 #
26     # name: python_disable/enable_pyc
27     # desc: tells python not to automatically recompile modules to .pyc/.pyo
28     # even if the timestamps/version stamps don't match. this is
29     # done to protect sandbox.
30     #
31     # note: supported by >=dev-lang/python-2.2.3-r3 only.
32     #
33 liquidx 1.2 python_disable_pyc() {
34 liquidx 1.3 export PYTHON_DONTCOMPILE=1
35 liquidx 1.2 }
36 liquidx 1.1
37 liquidx 1.4 python_enable_pyc() {
38     unset PYTHON_DONTCOMPILE
39     }
40    
41     python_disable_pyc
42    
43 liquidx 1.1 #
44     # name: python_version
45     # desc: run without arguments and it will export the version of python
46     # currently in use as $PYVER
47     #
48     python_version() {
49     local tmpstr
50     python=${python:-/usr/bin/python}
51     tmpstr="$(${python} -V 2>&1 )"
52     export PYVER_ALL="${tmpstr#Python }"
53    
54     export PYVER_MAJOR=$(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     }
59    
60     #
61     # name: python_makesym
62     # desc: run without arguments, it will create the /usr/bin/python symlinks
63     # to the latest installed version
64     #
65     python_makesym() {
66 liquidx 1.10 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
67     alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
68 liquidx 1.1 }
69    
70     #
71     # name: python_tkinter_exists
72     # desc: run without arguments, it will return TRUE(0) if python is compiled
73     # with tkinter or FALSE(1) if python is compiled without tkinter.
74     #
75     python_tkinter_exists() {
76     if ! python -c "import Tkinter" >/dev/null 2>&1; then
77     eerror "You need to recompile python with Tkinter support."
78     eerror "That means: USE='tcltk' emerge python"
79     echo
80     die "missing tkinter support with installed python"
81     fi
82     }
83    
84     #
85     # name: python_mod_exists
86 pythonhead 1.7 # desc: run with the module name as an argument. it will check if a
87 liquidx 1.1 # python module is installed and loadable. it will return
88     # TRUE(0) if the module exists, and FALSE(1) if the module does
89     # not exist.
90 pythonhead 1.7 # exam:
91 liquidx 1.1 # if python_mod_exists gtk; then
92     # echo "gtk support enabled
93     # fi
94     #
95     python_mod_exists() {
96 pythonhead 1.7 if ! python -c "import $1" >/dev/null 2>&1; then
97 liquidx 1.1 return 1
98     fi
99     return 0
100     }
101    
102     #
103     # name: python_mod_compile
104     # desc: given a filename, it will pre-compile the module's .pyc and .pyo.
105     # should only be run in pkg_postinst()
106     # exam:
107     # python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
108     #
109     python_mod_compile() {
110 liquidx 1.5 # allow compiling for older python versions
111     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
112     PYVER=${PYTHON_OVERRIDE_PYVER}
113 pythonhead 1.7 else
114 liquidx 1.5 python_version
115     fi
116 pythonhead 1.7
117 liquidx 1.1 if [ -f "$1" ]; then
118 liquidx 1.5 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
119 liquidx 1.1 ewarn "Failed to compile ${1}"
120 liquidx 1.5 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
121 pythonhead 1.7 ewarn "Failed to compile ${1}"
122 liquidx 1.1 else
123     ewarn "Unable to find ${1}"
124 pythonhead 1.7 fi
125 liquidx 1.1 }
126    
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 pythonhead 1.7 #
133 liquidx 1.1 # if supplied with arguments, it will recompile all modules recursively
134     # in the supplied directory
135     # exam:
136     # python_mod_optimize ${ROOT}usr/share/codegen
137     #
138     python_mod_optimize() {
139 liquidx 1.5 # allow compiling for older python versions
140     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
141     PYVER=${PYTHON_OVERRIDE_PYVER}
142 pythonhead 1.7 else
143 liquidx 1.5 python_version
144     fi
145 pythonhead 1.7
146 liquidx 1.5 # set opts
147     if [ "${PYVER}" = "2.2" ]; then
148     compileopts=""
149     else
150     compileopts="-q"
151     fi
152 pythonhead 1.7
153 liquidx 1.10 ebegin "Byte compiling python modules for python-${PYVER} .."
154 liquidx 1.5 python${PYVER} ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@
155     python${PYVER} -O ${ROOT}usr/lib/python${PYVER}/compileall.py ${compileopts} $@
156     eend $?
157 liquidx 1.1 }
158    
159     #
160     # name: python_mod_cleanup
161     # desc: 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]
163 pythonhead 1.7 #
164 liquidx 1.1 # it will recursively scan all compiled python modules in the directories
165     # 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
167     #
168     python_mod_cleanup() {
169     local SEARCH_PATH
170    
171 liquidx 1.5 if [ $# -gt 0 ]; then
172     for path in $@; do
173     SEARCH_PATH="${SEARCH_PATH} ${ROOT}${path#/}"
174 pythonhead 1.7 done
175 liquidx 1.5 else
176     for path in ${ROOT}usr/lib/python*/site-packages; do
177     SEARCH_PATH="${SEARCH_PATH} ${path}"
178     done
179     fi
180 pythonhead 1.7
181 liquidx 1.1 for path in ${SEARCH_PATH}; do
182 liquidx 1.11 einfo "Cleaning orphaned Python bytecode from ${path} .."
183 pythonhead 1.7 for obj in $(find ${path} -name *.pyc); do
184 liquidx 1.1 src_py="$(echo $obj | sed 's:c$::')"
185     if [ ! -f "${src_py}" ]; then
186     einfo "Purging ${src_py}[co]"
187     rm -f ${src_py}[co]
188     fi
189 liquidx 1.12 done
190     # attempt to remove directories that maybe empty
191     for dir in $(find ${path} -type d | sort -r); do
192     rmdir ${dir} 2>/dev/null
193 liquidx 1.1 done
194 pythonhead 1.7 done
195 liquidx 1.1 }

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