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"""distutils.command.build_scripts Implements the Distutils 'build_scripts' command.""" __revision__ = "$Id$" import os, re from stat import ST_MODE from distutils.core import Command from distutils.dep_util import newer from distutils.util import convert_path from distutils import log # check if Python is called on the first line with this expression first_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. """ _sysconfig = __import__('sysconfig') 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.is_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%s%s" % (_sysconfig.get_config_var("VERSION"), _sysconfig.get_config_var("EXE"))), post_interp)) outf.writelines(f.readlines()) outf.close() if f: f.close() else: if f: 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