mirror of https://github.com/python/cpython
99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
"""distutils.command.build_scripts
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Implements the Distutils 'build_scripts' command."""
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# created 2000/05/23, Bastian Kleineidam
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__revision__ = "$Id$"
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import sys, os, re
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from distutils.core import Command
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from distutils.dep_util import newer
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# check if Python is called on the first line with this expression
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first_line_re = re.compile(r'^#!.*python(\s+.*)?')
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class build_scripts (Command):
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description = "\"build\" scripts (copy and fixup #! line)"
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user_options = [
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('build-dir=', 'd', "directory to \"build\" (copy) to"),
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('force', 'f', "forcibly build everything (ignore file timestamps"),
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]
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def initialize_options (self):
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self.build_dir = None
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self.scripts = None
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self.force = None
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self.outfiles = None
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def finalize_options (self):
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self.set_undefined_options ('build',
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('build_scripts', 'build_dir'),
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('force', 'force'))
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self.scripts = self.distribution.scripts
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def run (self):
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if not self.scripts:
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return
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self.copy_scripts()
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def copy_scripts (self):
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"""Copy each script listed in 'self.scripts'; if it's marked as a
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Python script in the Unix way (first line matches 'first_line_re',
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ie. starts with "\#!" and contains "python"), then adjust the first
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line to refer to the current Python intepreter as we copy.
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"""
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outfiles = []
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self.mkpath(self.build_dir)
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for script in self.scripts:
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adjust = 0
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outfile = os.path.join(self.build_dir, os.path.basename(script))
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if not self.force and not newer(script, outfile):
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self.announce("not copying %s (output up-to-date)" % script)
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continue
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# Always open the file, but ignore failures in dry-run mode --
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# that way, we'll get accurate feedback if we can read the
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# script.
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try:
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f = open(script, "r")
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except IOError:
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if not self.dry_run:
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raise
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f = None
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else:
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first_line = f.readline()
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if not first_line:
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self.warn("%s is an empty file (skipping)" % script)
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continue
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match = first_line_re.match(first_line)
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if match:
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adjust = 1
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post_interp = match.group(1)
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if adjust:
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self.announce("copying and adjusting %s -> %s" %
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(script, self.build_dir))
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if not self.dry_run:
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outf = open(outfile, "w")
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outf.write("#!%s%s\n" %
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(os.path.normpath(sys.executable), post_interp))
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outf.writelines(f.readlines())
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outf.close()
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if f:
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f.close()
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else:
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f.close()
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self.copy_file(script, outfile)
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# copy_scripts ()
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# class build_scripts
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