Mercurial > cpython-lru_cache-weakref

annotate Lib/distutils/command/build_scripts.py @ 66807:d28126ebd60d

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author Raymond Hettinger <python@rcn.com>
date Thu, 09 Dec 2010 16:41:54 +0000
parents 29a3eda89995
children 6ad356525381
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """distutils.command.build_scripts
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2
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3 Implements the Distutils 'build_scripts' command."""
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4
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5 __revision__ = "$Id$"
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6
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7 import os, re
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8 from stat import ST_MODE
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9 from distutils import sysconfig
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10 from distutils.core import Command
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11 from distutils.dep_util import newer
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12 from distutils.util import convert_path, Mixin2to3
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13 from distutils import log
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14
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15 # check if Python is called on the first line with this expression
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16 first_line_re = re.compile('^#!.*python[0-9.]*([ \t].*)?$')
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17
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18 class build_scripts(Command):
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19
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20 description = "\"build\" scripts (copy and fixup #! line)"
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21
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22 user_options = [
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23 ('build-dir=', 'd', "directory to \"build\" (copy) to"),
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24 ('force', 'f', "forcibly build everything (ignore file timestamps"),
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25 ('executable=', 'e', "specify final destination interpreter path"),
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26 ]
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27
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28 boolean_options = ['force']
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30
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31 def initialize_options(self):
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32 self.build_dir = None
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33 self.scripts = None
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34 self.force = None
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35 self.executable = None
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36 self.outfiles = None
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37
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38 def finalize_options(self):
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39 self.set_undefined_options('build',
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40 ('build_scripts', 'build_dir'),
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41 ('force', 'force'),
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42 ('executable', 'executable'))
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43 self.scripts = self.distribution.scripts
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44
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45 def get_source_files(self):
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46 return self.scripts
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47
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48 def run(self):
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49 if not self.scripts:
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50 return
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51 self.copy_scripts()
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52
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53
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54 def copy_scripts(self):
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55 """Copy each script listed in 'self.scripts'; if it's marked as a
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56 Python script in the Unix way (first line matches 'first_line_re',
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57 ie. starts with "\#!" and contains "python"), then adjust the first
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58 line to refer to the current Python interpreter as we copy.
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59 """
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60 self.mkpath(self.build_dir)
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61 outfiles = []
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62 updated_files = []
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63 for script in self.scripts:
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64 adjust = False
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65 script = convert_path(script)
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66 outfile = os.path.join(self.build_dir, os.path.basename(script))
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67 outfiles.append(outfile)
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68
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69 if not self.force and not newer(script, outfile):
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70 log.debug("not copying %s (up-to-date)", script)
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71 continue
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72
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73 # Always open the file, but ignore failures in dry-run mode --
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74 # that way, we'll get accurate feedback if we can read the
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75 # script.
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76 try:
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77 f = open(script, "r")
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78 except IOError:
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79 if not self.dry_run:
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80 raise
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81 f = None
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82 else:
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83 first_line = f.readline()
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84 if not first_line:
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85 self.warn("%s is an empty file (skipping)" % script)
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86 continue
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87
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88 match = first_line_re.match(first_line)
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89 if match:
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90 adjust = True
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91 post_interp = match.group(1) or ''
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92
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93 if adjust:
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94 log.info("copying and adjusting %s -> %s", script,
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95 self.build_dir)
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96 updated_files.append(outfile)
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97 if not self.dry_run:
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98 outf = open(outfile, "w")
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99 if not sysconfig.python_build:
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100 outf.write("#!%s%s\n" %
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101 (self.executable,
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102 post_interp))
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103 else:
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104 outf.write("#!%s%s\n" %
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105 (os.path.join(
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106 sysconfig.get_config_var("BINDIR"),
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107 "python%s%s" % (sysconfig.get_config_var("VERSION"),
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108 sysconfig.get_config_var("EXE"))),
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109 post_interp))
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110 outf.writelines(f.readlines())
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111 outf.close()
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112 if f:
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113 f.close()
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114 else:
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115 if f:
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116 f.close()
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117 updated_files.append(outfile)
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118 self.copy_file(script, outfile)
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119
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120 if os.name == 'posix':
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121 for file in outfiles:
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122 if self.dry_run:
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123 log.info("changing mode of %s", file)
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124 else:
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125 oldmode = os.stat(file)[ST_MODE] & 0o7777
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126 newmode = (oldmode | 0o555) & 0o7777
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127 if newmode != oldmode:
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128 log.info("changing mode of %s from %o to %o",
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129 file, oldmode, newmode)
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130 os.chmod(file, newmode)
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131 # XXX should we modify self.outfiles?
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132 return outfiles, updated_files
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133
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134 class build_scripts_2to3(build_scripts, Mixin2to3):
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135
60e775eaaaee Issue #4073: Add 2to3 support to build_scripts, refactor that support
Martin v. Löwis <martin@v.loewis.de>
parents: 45471
diff changeset
136 def copy_scripts(self):
60e775eaaaee Issue #4073: Add 2to3 support to build_scripts, refactor that support
Martin v. Löwis <martin@v.loewis.de>
parents: 45471
diff changeset
137 outfiles, updated_files = build_scripts.copy_scripts(self)
60e775eaaaee Issue #4073: Add 2to3 support to build_scripts, refactor that support
Martin v. Löwis <martin@v.loewis.de>
parents: 45471
diff changeset
138 if not self.dry_run:
60e775eaaaee Issue #4073: Add 2to3 support to build_scripts, refactor that support
Martin v. Löwis <martin@v.loewis.de>
parents: 45471
diff changeset
139 self.run_2to3(updated_files)
60e775eaaaee Issue #4073: Add 2to3 support to build_scripts, refactor that support
Martin v. Löwis <martin@v.loewis.de>
parents: 45471
diff changeset
140 return outfiles, updated_files