"""distutils.command.build_scripts Implements the Distutils 'build_scripts' command.""" # This module should be kept compatible with Python 2.1. __revision__ = "$Id: build_scripts.py 37828 2004-11-10 22:23:15Z loewis $" import sys, os, refrom stat import ST_MODEfrom distutils import sysconfigfrom distutils.core import Commandfrom distutils.dep_util import newerfrom distutils.util import convert_pathfrom distutils import log # check if Python is called on the first line with this expressionfirst_line_re = re.compile('^#!.*python[0-9.]*([ \t].*)?$') class build_scripts (Command):     description = "\"build\" scripts (copy and fixup #! line)"     user_options = [        ('build-dir=', 'd', "directory to \"build\" (copy) to"),        ('force', 'f', "forcibly build everything (ignore file timestamps"),        ('executable=', 'e', "specify final destination interpreter path"),        ]     boolean_options = ['force']      def initialize_options (self):        self.build_dir = None        self.scripts = None        self.force = None        self.executable = None        self.outfiles = None     def finalize_options (self):        self.set_undefined_options('build',                                   ('build_scripts', 'build_dir'),                                   ('force', 'force'),                                   ('executable', 'executable'))        self.scripts = self.distribution.scripts     def get_source_files(self):        return self.scripts     def run (self):        if not self.scripts:            return        self.copy_scripts()      def copy_scripts (self):        """Copy each script listed in 'self.scripts'; if it's marked as a        Python script in the Unix way (first line matches 'first_line_re',        ie. starts with "\#!" and contains "python"), then adjust the first        line to refer to the current Python interpreter as we copy.        """        self.mkpath(self.build_dir)        outfiles = []        for script in self.scripts:            adjust = 0            script = convert_path(script)            outfile = os.path.join(self.build_dir, os.path.basename(script))            outfiles.append(outfile)             if not self.force and not newer(script, outfile):                log.debug("not copying %s (up-to-date)", script)                continue             # Always open the file, but ignore failures in dry-run mode --            # that way, we'll get accurate feedback if we can read the            # script.            try:                f = open(script, "r")            except IOError:                if not self.dry_run:                    raise                f = None            else:                first_line = f.readline()                if not first_line:                    self.warn("%s is an empty file (skipping)" % script)                    continue                 match = first_line_re.match(first_line)                if match:                    adjust = 1                    post_interp = match.group(1) or ''             if adjust:                log.info("copying and adjusting %s -> %s", script,                         self.build_dir)                if not self.dry_run:                    outf = open(outfile, "w")                    if not sysconfig.python_build:                        outf.write("#!%s%s\n" %                                   (self.executable,                                    post_interp))                    else:                        outf.write("#!%s%s\n" %                                   (os.path.join(                            sysconfig.get_config_var("BINDIR"),                            "python" + sysconfig.get_config_var("EXE")),                                    post_interp))                    outf.writelines(f.readlines())                    outf.close()                if f:                    f.close()            else:                f.close()                self.copy_file(script, outfile)         if os.name == 'posix':            for file in outfiles:                if self.dry_run:                    log.info("changing mode of %s", file)                else:                    oldmode = os.stat(file)[ST_MODE] & 07777                    newmode = (oldmode | 0555) & 07777                    if newmode != oldmode:                        log.info("changing mode of %s from %o to %o",                                 file, oldmode, newmode)                        os.chmod(file, newmode)     # copy_scripts () # class build_scripts