Mercurial > cpython-lru_cache-weakref

annotate Lib/distutils/command/build_scripts.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents b36cb4602e21
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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.core import Command
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10 from distutils.dep_util import newer
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11 from distutils.util import convert_path
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12 from distutils import log
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13
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14 # check if Python is called on the first line with this expression
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15 first_line_re = re.compile('^#!.*python[0-9.]*([ \t].*)?$')
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16
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17 class build_scripts (Command):
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18
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19 description = "\"build\" scripts (copy and fixup #! line)"
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20
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21 user_options = [
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22 ('build-dir=', 'd', "directory to \"build\" (copy) to"),
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23 ('force', 'f', "forcibly build everything (ignore file timestamps"),
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24 ('executable=', 'e', "specify final destination interpreter path"),
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25 ]
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26
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27 boolean_options = ['force']
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29
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30 def initialize_options (self):
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31 self.build_dir = None
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32 self.scripts = None
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33 self.force = None
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34 self.executable = None
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35 self.outfiles = None
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36
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37 def finalize_options (self):
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38 self.set_undefined_options('build',
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39 ('build_scripts', 'build_dir'),
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40 ('force', 'force'),
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41 ('executable', 'executable'))
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42 self.scripts = self.distribution.scripts
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43
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44 def get_source_files(self):
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45 return self.scripts
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47 def run (self):
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48 if not self.scripts:
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49 return
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50 self.copy_scripts()
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51
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52
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53 def copy_scripts (self):
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54 """Copy each script listed in 'self.scripts'; if it's marked as a
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55 Python script in the Unix way (first line matches 'first_line_re',
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56 ie. starts with "\#!" and contains "python"), then adjust the first
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57 line to refer to the current Python interpreter as we copy.
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58 """
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59 _sysconfig = __import__('sysconfig')
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60 self.mkpath(self.build_dir)
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61 outfiles = []
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62 for script in self.scripts:
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63 adjust = 0
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64 script = convert_path(script)
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65 outfile = os.path.join(self.build_dir, os.path.basename(script))
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66 outfiles.append(outfile)
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67
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68 if not self.force and not newer(script, outfile):
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69 log.debug("not copying %s (up-to-date)", script)
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70 continue
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71
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72 # Always open the file, but ignore failures in dry-run mode --
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73 # that way, we'll get accurate feedback if we can read the
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74 # script.
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75 try:
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76 f = open(script, "r")
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77 except IOError:
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78 if not self.dry_run:
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79 raise
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80 f = None
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81 else:
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82 first_line = f.readline()
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83 if not first_line:
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84 self.warn("%s is an empty file (skipping)" % script)
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85 continue
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86
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87 match = first_line_re.match(first_line)
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88 if match:
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89 adjust = 1
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90 post_interp = match.group(1) or ''
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91
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92 if adjust:
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93 log.info("copying and adjusting %s -> %s", script,
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94 self.build_dir)
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95 if not self.dry_run:
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96 outf = open(outfile, "w")
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97 if not _sysconfig.is_python_build():
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98 outf.write("#!%s%s\n" %
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99 (self.executable,
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100 post_interp))
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101 else:
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102 outf.write("#!%s%s\n" %
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103 (os.path.join(
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104 _sysconfig.get_config_var("BINDIR"),
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105 "python%s%s" % (_sysconfig.get_config_var("VERSION"),
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106 _sysconfig.get_config_var("EXE"))),
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107 post_interp))
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108 outf.writelines(f.readlines())
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109 outf.close()
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110 if f:
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111 f.close()
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112 else:
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113 if f:
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114 f.close()
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115 self.copy_file(script, outfile)
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116
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117 if os.name == 'posix':
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118 for file in outfiles:
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119 if self.dry_run:
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120 log.info("changing mode of %s", file)
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121 else:
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122 oldmode = os.stat(file)[ST_MODE] & 07777
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123 newmode = (oldmode | 0555) & 07777
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124 if newmode != oldmode:
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125 log.info("changing mode of %s from %o to %o",
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126 file, oldmode, newmode)
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127 os.chmod(file, newmode)
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128
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129 # copy_scripts ()
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130
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131 # class build_scripts