Mercurial > cpython-lru_cache-weakref

annotate Lib/distutils/command/build_scripts.py @ 17322:bd110eadc19a legacy-trunk

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One-liner critical fix from Jim Fulton: Eric's string-method crusade got the order backwards in a line (for .find()).
author Tim Peters <tim.peters@gmail.com>
date Thu, 05 Apr 2001 22:26:23 +0000
parents a1b3446c720f
children 2dffa3d3d94f 132c4bfdba74
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 # created 2000/05/23, Bastian Kleineidam
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6
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7 __revision__ = "$Id$"
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9 import sys, os, re
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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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13 # check if Python is called on the first line with this expression.
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14 # This expression will leave lines using /usr/bin/env alone; presumably
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15 # the script author knew what they were doing...)
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16 first_line_re = re.compile(r'^#!(?!\s*/usr/bin/env\b).*python(\s+.*)?')
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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 ]
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26
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27 boolean_options = ['force']
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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.outfiles = None
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35
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36 def finalize_options (self):
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37 self.set_undefined_options('build',
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38 ('build_scripts', 'build_dir'),
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39 ('force', 'force'))
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40 self.scripts = self.distribution.scripts
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41
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42
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43 def run (self):
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44 if not self.scripts:
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45 return
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46 self.copy_scripts()
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47
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48
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49 def copy_scripts (self):
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50 """Copy each script listed in 'self.scripts'; if it's marked as a
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51 Python script in the Unix way (first line matches 'first_line_re',
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52 ie. starts with "\#!" and contains "python"), then adjust the first
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53 line to refer to the current Python interpreter as we copy.
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54 """
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55 outfiles = []
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56 self.mkpath(self.build_dir)
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57 for script in self.scripts:
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58 adjust = 0
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59 outfile = os.path.join(self.build_dir, os.path.basename(script))
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60
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61 if not self.force and not newer(script, outfile):
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62 self.announce("not copying %s (up-to-date)" % script)
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63 continue
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64
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65 # Always open the file, but ignore failures in dry-run mode --
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66 # that way, we'll get accurate feedback if we can read the
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67 # script.
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68 try:
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69 f = open(script, "r")
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70 except IOError:
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71 if not self.dry_run:
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72 raise
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73 f = None
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74 else:
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75 first_line = f.readline()
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76 if not first_line:
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77 self.warn("%s is an empty file (skipping)" % script)
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78 continue
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79
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80 match = first_line_re.match(first_line)
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81 if match:
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82 adjust = 1
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83 post_interp = match.group(1)
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84
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85 if adjust:
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86 self.announce("copying and adjusting %s -> %s" %
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87 (script, self.build_dir))
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88 if not self.dry_run:
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89 outf = open(outfile, "w")
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90 outf.write("#!%s%s\n" %
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91 (os.path.normpath(sys.executable), post_interp))
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92 outf.writelines(f.readlines())
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93 outf.close()
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94 if f:
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95 f.close()
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96 else:
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97 f.close()
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98 self.copy_file(script, outfile)
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99
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100 # copy_scripts ()
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101
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102 # class build_scripts