1#!/bin/sh
2# py-compile - Compile a Python program
3
4scriptversion=2021-02-27.01; # UTC
5
6# Copyright (C) 2000-2021 Free Software Foundation, Inc.
7
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2, or (at your option)
11# any later version.
12
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17
18# You should have received a copy of the GNU General Public License
19# along with this program.  If not, see <https://www.gnu.org/licenses/>.
20
21# As a special exception to the GNU General Public License, if you
22# distribute this file as part of a program that contains a
23# configuration script generated by Autoconf, you may include it under
24# the same distribution terms that you use for the rest of that program.
25
26# This file is maintained in Automake, please report
27# bugs to <bug-automake@gnu.org> or send patches to
28# <automake-patches@gnu.org>.
29
30if test -z "$PYTHON"; then
31  PYTHON=python
32fi
33
34me=py-compile
35
36usage_error ()
37{
38  echo "$me: $*" >&2
39  echo "Try '$me --help' for more information." >&2
40  exit 1
41}
42
43basedir=
44destdir=
45while test $# -ne 0; do
46  case "$1" in
47    --basedir)
48      if test $# -lt 2; then
49        usage_error "option '--basedir' requires an argument"
50      else
51        basedir=$2
52      fi
53      shift
54      ;;
55    --destdir)
56      if test $# -lt 2; then
57        usage_error "option '--destdir' requires an argument"
58      else
59        destdir=$2
60      fi
61      shift
62      ;;
63    -h|--help)
64      cat <<\EOF
65Usage: py-compile [--help] [--version] [--basedir DIR] [--destdir DIR] FILES..."
66
67Byte compile some python scripts FILES.  Use --destdir to specify any
68leading directory path to the FILES that you don't want to include in the
69byte compiled file.  Specify --basedir for any additional path information you
70do want to be shown in the byte compiled file.
71
72Example:
73  py-compile --destdir /tmp/pkg-root --basedir /usr/share/test test.py test2.py
74
75Report bugs to <bug-automake@gnu.org>.
76EOF
77      exit $?
78      ;;
79    -v|--version)
80      echo "$me $scriptversion"
81      exit $?
82      ;;
83    --)
84      shift
85      break
86      ;;
87    -*)
88      usage_error "unrecognized option '$1'"
89      ;;
90    *)
91      break
92      ;;
93  esac
94  shift
95done
96
97files=$*
98if test -z "$files"; then
99  usage_error "no files given"
100fi
101
102# if basedir was given, then it should be prepended to filenames before
103# byte compilation.
104if test -z "$basedir"; then
105  pathtrans="path = file"
106else
107  pathtrans="path = os.path.join('$basedir', file)"
108fi
109
110# if destdir was given, then it needs to be prepended to the filename to
111# byte compile but not go into the compiled file.
112if test -z "$destdir"; then
113  filetrans="filepath = path"
114else
115  filetrans="filepath = os.path.normpath('$destdir' + os.sep + path)"
116fi
117
118python_major=`$PYTHON -V 2>&1 | sed -e 's/.* //;s/\..*$//;1q'`
119if test -z "$python_major"; then
120  echo "$me: could not determine $PYTHON major version, guessing 3" >&2
121  python_major=3
122fi
123
124# The old way to import libraries was deprecated.
125if test "$python_major" -le 2; then
126  import_lib=imp
127  import_test="hasattr(imp, 'get_tag')"
128  import_call=imp.cache_from_source
129  import_arg2=', False' # needed in one call and not the other
130else
131  import_lib=importlib
132  import_test="hasattr(sys.implementation, 'cache_tag')"
133  import_call=importlib.util.cache_from_source
134  import_arg2=
135fi
136
137$PYTHON -c "
138import sys, os, py_compile, $import_lib
139
140files = '''$files'''
141
142sys.stdout.write('Byte-compiling python modules...\n')
143for file in files.split():
144    $pathtrans
145    $filetrans
146    if not os.path.exists(filepath) or not (len(filepath) >= 3
147                                            and filepath[-3:] == '.py'):
148	    continue
149    sys.stdout.write(file)
150    sys.stdout.flush()
151    if $import_test:
152        py_compile.compile(filepath, $import_call(filepath), path)
153    else:
154        py_compile.compile(filepath, filepath + 'c', path)
155sys.stdout.write('\n')" || exit $?
156
157# this will fail for python < 1.5, but that doesn't matter ...
158$PYTHON -O -c "
159import sys, os, py_compile, $import_lib
160
161# pypy does not use .pyo optimization
162if hasattr(sys, 'pypy_translation_info'):
163    sys.exit(0)
164
165files = '''$files'''
166sys.stdout.write('Byte-compiling python modules (optimized versions) ...\n')
167for file in files.split():
168    $pathtrans
169    $filetrans
170    if not os.path.exists(filepath) or not (len(filepath) >= 3
171                                            and filepath[-3:] == '.py'):
172	    continue
173    sys.stdout.write(file)
174    sys.stdout.flush()
175    if $import_test:
176        py_compile.compile(filepath, $import_call(filepath$import_arg2), path)
177    else:
178        py_compile.compile(filepath, filepath + 'o', path)
179sys.stdout.write('\n')" 2>/dev/null || exit $?
180
181# Local Variables:
182# mode: shell-script
183# sh-indentation: 2
184# eval: (add-hook 'before-save-hook 'time-stamp)
185# time-stamp-start: "scriptversion="
186# time-stamp-format: "%:y-%02m-%02d.%02H"
187# time-stamp-time-zone: "UTC0"
188# time-stamp-end: "; # UTC"
189# End:
190