wxPython/distutils/command/build_scripts.py

   1 """distutils.command.build_scripts
   2
   3 Implements the Distutils 'build_scripts' command."""
   4
   5 # This module should be kept compatible with Python 1.5.2.
   6
   7 __revision__ = "$Id$"
   8
   9 import sys, os, re
  10 from stat import ST_MODE
  11 from distutils import sysconfig
  12 from distutils.core import Command
  13 from distutils.dep_util import newer
  14 from distutils.util import convert_path
  15 from distutils import log
  16
  17 # check if Python is called on the first line with this expression
  18 first_line_re = re.compile(r'^#!.*python[0-9.]*(\s+.*)?$')
  19
  20 class build_scripts (Command):
  21
  22     description = "\"build\" scripts (copy and fixup #! line)"
  23
  24     user_options = [
  25         ('build-dir=', 'd', "directory to \"build\" (copy) to"),
  26         ('force', 'f', "forcibly build everything (ignore file timestamps"),
  27         ]
  28
  29     boolean_options = ['force']
  30
  31
  32     def initialize_options (self):
  33         self.build_dir = None
  34         self.scripts = None
  35         self.force = None
  36         self.outfiles = None
  37
  38     def finalize_options (self):
  39         self.set_undefined_options('build',
  40                                    ('build_scripts', 'build_dir'),
  41                                    ('force', 'force'))
  42         self.scripts = self.distribution.scripts
  43
  44
  45     def run (self):
  46         if not self.scripts:
  47             return
  48         self.copy_scripts()
  49
  50
  51     def copy_scripts (self):
  52         """Copy each script listed in 'self.scripts'; if it's marked as a
  53         Python script in the Unix way (first line matches 'first_line_re',
  54         ie. starts with "\#!" and contains "python"), then adjust the first
  55         line to refer to the current Python interpreter as we copy.
  56         """
  57         self.mkpath(self.build_dir)
  58         outfiles = []
  59         for script in self.scripts:
  60             adjust = 0
  61             script = convert_path(script)
  62             outfile = os.path.join(self.build_dir, os.path.basename(script))
  63             outfiles.append(outfile)
  64
  65             if not self.force and not newer(script, outfile):
  66                 log.debug("not copying %s (up-to-date)", script)
  67                 continue
  68
  69             # Always open the file, but ignore failures in dry-run mode --
  70             # that way, we'll get accurate feedback if we can read the
  71             # script.
  72             try:
  73                 f = open(script, "r")
  74             except IOError:
  75                 if not self.dry_run:
  76                     raise
  77                 f = None
  78             else:
  79                 first_line = f.readline()
  80                 if not first_line:
  81                     self.warn("%s is an empty file (skipping)" % script)
  82                     continue
  83
  84                 match = first_line_re.match(first_line)
  85                 if match:
  86                     adjust = 1
  87                     post_interp = match.group(1) or ''
  88
  89             if adjust:
  90                 log.info("copying and adjusting %s -> %s", script,
  91                          self.build_dir)
  92                 if not self.dry_run:
  93                     outf = open(outfile, "w")
  94                     if not sysconfig.python_build:
  95                         outf.write("#!%s%s\n" %
  96                                    (os.path.normpath(sys.executable),
  97                                     post_interp))
  98                     else:
  99                         outf.write("#!%s%s" %
 100                                    (os.path.join(
 101                             sysconfig.get_config_var("BINDIR"),
 102                             "python" + sysconfig.get_config_var("EXE")),
 103                                     post_interp))
 104                     outf.writelines(f.readlines())
 105                     outf.close()
 106                 if f:
 107                     f.close()
 108             else:
 109                 f.close()
 110                 self.copy_file(script, outfile)
 111
 112         if os.name == 'posix':
 113             for file in outfiles:
 114                 if self.dry_run:
 115                     log.info("changing mode of %s", file)
 116                 else:
 117                     oldmode = os.stat(file)[ST_MODE] & 07777
 118                     newmode = (oldmode | 0555) & 07777
 119                     if newmode != oldmode:
 120                         log.info("changing mode of %s from %o to %o",
 121                                  file, oldmode, newmode)
 122                         os.chmod(file, newmode)
 123
 124     # copy_scripts ()
 125
 126 # class build_scripts