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Revision 1.21 - (hide annotations) (download)
Mon Jul 11 15:08:06 2005 UTC (9 years, 2 months ago) by swegener
Branch: MAIN
Changes since 1.20: +2 -2 lines
QA: Apply whitespace checks from repoman to eclasses.

1 vapier 1.14 # Copyright 1999-2004 Gentoo Foundation
2 liquidx 1.1 # Distributed under the terms of the GNU General Public License v2
3 swegener 1.21 # $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.20 2005/07/06 20:23:20 agriffis 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 eradicator 1.15 # python_mod_cleanup() - Goes through /usr/lib*/python* to remove
17 liquidx 1.1 # orphaned *.pyc *.pyo
18     # python_makesym() - Makes /usr/bin/python symlinks
19    
20 pythonhead 1.7 inherit alternatives
21 liquidx 1.1
22 liquidx 1.2
23 liquidx 1.18
24     __python_eclass_test() {
25     __python_version_extract 2.3
26     echo -n "2.3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
27     echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
28     __python_version_extract 2.3.4
29     echo -n "2.3.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
30     echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
31     __python_version_extract 2.3.5
32     echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
33     echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
34     __python_version_extract 2.4
35     echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
36     echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
37     }
38    
39 liquidx 1.5 #
40     # name: python_disable/enable_pyc
41     # desc: tells python not to automatically recompile modules to .pyc/.pyo
42     # even if the timestamps/version stamps don't match. this is
43     # done to protect sandbox.
44     #
45     # note: supported by >=dev-lang/python-2.2.3-r3 only.
46     #
47 liquidx 1.2 python_disable_pyc() {
48 liquidx 1.3 export PYTHON_DONTCOMPILE=1
49 liquidx 1.2 }
50 liquidx 1.1
51 liquidx 1.4 python_enable_pyc() {
52     unset PYTHON_DONTCOMPILE
53     }
54    
55     python_disable_pyc
56    
57 liquidx 1.1 #
58     # name: python_version
59     # desc: run without arguments and it will export the version of python
60     # currently in use as $PYVER
61     #
62 liquidx 1.18
63     __python_version_extract() {
64     verstr=$1
65     export PYVER_MAJOR=${verstr:0:1}
66     export PYVER_MINOR=${verstr:2:1}
67     export PYVER_MICRO=${verstr:4}
68 swegener 1.21 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
69 liquidx 1.18 }
70    
71 liquidx 1.1 python_version() {
72     local tmpstr
73     python=${python:-/usr/bin/python}
74     tmpstr="$(${python} -V 2>&1 )"
75     export PYVER_ALL="${tmpstr#Python }"
76 liquidx 1.18 __python_version_extract $PYVER_ALL
77 liquidx 1.1 }
78    
79     #
80     # name: python_makesym
81     # desc: run without arguments, it will create the /usr/bin/python symlinks
82     # to the latest installed version
83     #
84     python_makesym() {
85 liquidx 1.10 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
86     alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
87 liquidx 1.1 }
88    
89     #
90     # name: python_tkinter_exists
91 liquidx 1.16 # desc: run without arguments, checks if python was compiled with Tkinter
92     # support. If not, prints an error message and dies.
93 liquidx 1.1 #
94     python_tkinter_exists() {
95     if ! python -c "import Tkinter" >/dev/null 2>&1; then
96     eerror "You need to recompile python with Tkinter support."
97     eerror "That means: USE='tcltk' emerge python"
98     echo
99     die "missing tkinter support with installed python"
100     fi
101     }
102    
103     #
104     # name: python_mod_exists
105 pythonhead 1.7 # desc: run with the module name as an argument. it will check if a
106 liquidx 1.1 # python module is installed and loadable. it will return
107     # TRUE(0) if the module exists, and FALSE(1) if the module does
108     # not exist.
109 pythonhead 1.7 # exam:
110 liquidx 1.1 # if python_mod_exists gtk; then
111     # echo "gtk support enabled
112     # fi
113     #
114     python_mod_exists() {
115 liquidx 1.16 [ -z "$1" ] && die "${FUNCTION} requires an argument!"
116 pythonhead 1.7 if ! python -c "import $1" >/dev/null 2>&1; then
117 liquidx 1.1 return 1
118     fi
119     return 0
120     }
121    
122     #
123     # name: python_mod_compile
124     # desc: given a filename, it will pre-compile the module's .pyc and .pyo.
125     # should only be run in pkg_postinst()
126     # exam:
127     # python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
128     #
129     python_mod_compile() {
130 liquidx 1.5 # allow compiling for older python versions
131     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
132     PYVER=${PYTHON_OVERRIDE_PYVER}
133 pythonhead 1.7 else
134 liquidx 1.5 python_version
135     fi
136 pythonhead 1.7
137 liquidx 1.1 if [ -f "$1" ]; then
138 liquidx 1.5 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
139 liquidx 1.1 ewarn "Failed to compile ${1}"
140 liquidx 1.5 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
141 pythonhead 1.7 ewarn "Failed to compile ${1}"
142 liquidx 1.1 else
143     ewarn "Unable to find ${1}"
144 pythonhead 1.7 fi
145 liquidx 1.1 }
146    
147     #
148     # name: python_mod_optimize
149     # desc: if no arguments supplied, it will recompile all modules under
150     # sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
151     # no recursively
152 pythonhead 1.7 #
153 liquidx 1.1 # if supplied with arguments, it will recompile all modules recursively
154     # in the supplied directory
155     # exam:
156     # python_mod_optimize ${ROOT}usr/share/codegen
157     #
158     python_mod_optimize() {
159 liquidx 1.13 local myroot
160     # strip trailing slash
161 liquidx 1.16 myroot="${ROOT%/}"
162 liquidx 1.13
163 liquidx 1.5 # allow compiling for older python versions
164     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
165     PYVER=${PYTHON_OVERRIDE_PYVER}
166 pythonhead 1.7 else
167 liquidx 1.5 python_version
168     fi
169 pythonhead 1.7
170 liquidx 1.5 # set opts
171     if [ "${PYVER}" = "2.2" ]; then
172     compileopts=""
173     else
174     compileopts="-q"
175     fi
176 pythonhead 1.7
177 liquidx 1.10 ebegin "Byte compiling python modules for python-${PYVER} .."
178 liquidx 1.13 python${PYVER} ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
179     python${PYVER} -O ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
180 liquidx 1.5 eend $?
181 liquidx 1.1 }
182    
183     #
184     # name: python_mod_cleanup
185     # desc: run with optional arguments, where arguments are directories of
186     # python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
187 pythonhead 1.7 #
188 liquidx 1.1 # it will recursively scan all compiled python modules in the directories
189     # and determine if they are orphaned (eg. their corresponding .py is missing.)
190     # if they are, then it will remove their corresponding .pyc and .pyo
191     #
192     python_mod_cleanup() {
193 liquidx 1.13 local SEARCH_PATH myroot
194 liquidx 1.16
195 liquidx 1.13 # strip trailing slash
196 liquidx 1.16 myroot="${ROOT%/}"
197 liquidx 1.1
198 liquidx 1.5 if [ $# -gt 0 ]; then
199     for path in $@; do
200 liquidx 1.13 SEARCH_PATH="${SEARCH_PATH} ${myroot}/${path#/}"
201 pythonhead 1.7 done
202 liquidx 1.5 else
203 eradicator 1.15 for path in ${myroot}/usr/lib*/python*/site-packages; do
204 liquidx 1.5 SEARCH_PATH="${SEARCH_PATH} ${path}"
205     done
206     fi
207 pythonhead 1.7
208 liquidx 1.1 for path in ${SEARCH_PATH}; do
209 liquidx 1.11 einfo "Cleaning orphaned Python bytecode from ${path} .."
210 pythonhead 1.7 for obj in $(find ${path} -name *.pyc); do
211 liquidx 1.16 src_py="${obj%c}"
212 liquidx 1.1 if [ ! -f "${src_py}" ]; then
213     einfo "Purging ${src_py}[co]"
214     rm -f ${src_py}[co]
215     fi
216 liquidx 1.12 done
217     # attempt to remove directories that maybe empty
218     for dir in $(find ${path} -type d | sort -r); do
219     rmdir ${dir} 2>/dev/null
220 liquidx 1.1 done
221 pythonhead 1.7 done
222 liquidx 1.1 }

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