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Revision 1.16 - (hide annotations) (download)
Wed Apr 20 15:43:37 2005 UTC (9 years, 7 months ago) by liquidx
Branch: MAIN
Changes since 1.15: +12 -11 lines
python eclass bash-fu skills upgrade

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 liquidx 1.16 # $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.15 2005/02/13 14:05:54 eradicator 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     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="${tmpstr#Python }"
53    
54 liquidx 1.16 export PYVER="${PYVER_ALL%.*}"
55     export PYVER_MAJOR="${PYVER%.*}"
56     export PYVER_MINOR="${PYVER##*.}"
57     export PYVER_MICRO="${PYVER_ALL##*.}"
58 liquidx 1.1 }
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 liquidx 1.16 # desc: run without arguments, checks if python was compiled with Tkinter
73     # support. If not, prints an error message and dies.
74 liquidx 1.1 #
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 liquidx 1.16 [ -z "$1" ] && die "${FUNCTION} requires an argument!"
97 pythonhead 1.7 if ! python -c "import $1" >/dev/null 2>&1; then
98 liquidx 1.1 return 1
99     fi
100     return 0
101     }
102    
103     #
104     # name: python_mod_compile
105     # desc: given a filename, it will pre-compile the module's .pyc and .pyo.
106     # should only be run in pkg_postinst()
107     # exam:
108     # python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
109     #
110     python_mod_compile() {
111 liquidx 1.5 # allow compiling for older python versions
112     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
113     PYVER=${PYTHON_OVERRIDE_PYVER}
114 pythonhead 1.7 else
115 liquidx 1.5 python_version
116     fi
117 pythonhead 1.7
118 liquidx 1.1 if [ -f "$1" ]; then
119 liquidx 1.5 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
120 liquidx 1.1 ewarn "Failed to compile ${1}"
121 liquidx 1.5 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
122 pythonhead 1.7 ewarn "Failed to compile ${1}"
123 liquidx 1.1 else
124     ewarn "Unable to find ${1}"
125 pythonhead 1.7 fi
126 liquidx 1.1 }
127    
128     #
129     # name: python_mod_optimize
130     # desc: if no arguments supplied, it will recompile all modules under
131     # sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
132     # no recursively
133 pythonhead 1.7 #
134 liquidx 1.1 # if supplied with arguments, it will recompile all modules recursively
135     # in the supplied directory
136     # exam:
137     # python_mod_optimize ${ROOT}usr/share/codegen
138     #
139     python_mod_optimize() {
140 liquidx 1.13 local myroot
141     # strip trailing slash
142 liquidx 1.16 myroot="${ROOT%/}"
143 liquidx 1.13
144 liquidx 1.5 # allow compiling for older python versions
145     if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
146     PYVER=${PYTHON_OVERRIDE_PYVER}
147 pythonhead 1.7 else
148 liquidx 1.5 python_version
149     fi
150 pythonhead 1.7
151 liquidx 1.5 # set opts
152     if [ "${PYVER}" = "2.2" ]; then
153     compileopts=""
154     else
155     compileopts="-q"
156     fi
157 pythonhead 1.7
158 liquidx 1.10 ebegin "Byte compiling python modules for python-${PYVER} .."
159 liquidx 1.13 python${PYVER} ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
160     python${PYVER} -O ${myroot}/usr/lib/python${PYVER}/compileall.py ${compileopts} $@
161 liquidx 1.5 eend $?
162 liquidx 1.1 }
163    
164     #
165     # name: python_mod_cleanup
166     # desc: run with optional arguments, where arguments are directories of
167     # python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
168 pythonhead 1.7 #
169 liquidx 1.1 # it will recursively scan all compiled python modules in the directories
170     # and determine if they are orphaned (eg. their corresponding .py is missing.)
171     # if they are, then it will remove their corresponding .pyc and .pyo
172     #
173     python_mod_cleanup() {
174 liquidx 1.13 local SEARCH_PATH myroot
175 liquidx 1.16
176 liquidx 1.13 # strip trailing slash
177 liquidx 1.16 myroot="${ROOT%/}"
178 liquidx 1.1
179 liquidx 1.5 if [ $# -gt 0 ]; then
180     for path in $@; do
181 liquidx 1.13 SEARCH_PATH="${SEARCH_PATH} ${myroot}/${path#/}"
182 pythonhead 1.7 done
183 liquidx 1.5 else
184 eradicator 1.15 for path in ${myroot}/usr/lib*/python*/site-packages; do
185 liquidx 1.5 SEARCH_PATH="${SEARCH_PATH} ${path}"
186     done
187     fi
188 pythonhead 1.7
189 liquidx 1.1 for path in ${SEARCH_PATH}; do
190 liquidx 1.11 einfo "Cleaning orphaned Python bytecode from ${path} .."
191 pythonhead 1.7 for obj in $(find ${path} -name *.pyc); do
192 liquidx 1.16 src_py="${obj%c}"
193 liquidx 1.1 if [ ! -f "${src_py}" ]; then
194     einfo "Purging ${src_py}[co]"
195     rm -f ${src_py}[co]
196     fi
197 liquidx 1.12 done
198     # attempt to remove directories that maybe empty
199     for dir in $(find ${path} -type d | sort -r); do
200     rmdir ${dir} 2>/dev/null
201 liquidx 1.1 done
202 pythonhead 1.7 done
203 liquidx 1.1 }

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