diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/distutils/command/build_scripts.py | 89 |
1 files changed, 58 insertions, 31 deletions
diff --git a/Lib/distutils/command/build_scripts.py b/Lib/distutils/command/build_scripts.py index 1e7279d..1829734 100644 --- a/Lib/distutils/command/build_scripts.py +++ b/Lib/distutils/command/build_scripts.py @@ -6,15 +6,16 @@ Implements the Distutils 'build_scripts' command.""" __revision__ = "$Id$" -import sys,os,re +import sys, os, re from distutils.core import Command +from distutils.dep_util import newer # check if Python is called on the first line with this expression -first_line_re = re.compile(r"^#!.+python(\s-\w+)*") +first_line_re = re.compile(r'^#!.*python(\s+.*)?') class build_scripts (Command): - description = "\"build\" scripts" + description = "\"build\" scripts (copy and fixup #! line)" user_options = [ ('build-dir=', 'd', "directory to \"build\" (copy) to"), @@ -38,34 +39,60 @@ class build_scripts (Command): def run (self): if not self.scripts: return - self._copy_files() - self._adjust_files() + self.copy_scripts() + - def _copy_files(self): - """Copy all the scripts to the build dir""" - self.outfiles = [] + 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 intepreter as we copy. + """ + outfiles = [] self.mkpath(self.build_dir) - for f in self.scripts: - print self.build_dir - if self.copy_file(f, self.build_dir): - self.outfiles.append(os.path.join(self.build_dir, f)) - - def _adjust_files(self): - """If the first line begins with #! and ends with python - replace it with the current python interpreter""" - for f in self.outfiles: - if not self.dry_run: - data = open(f, "r").readlines() - if not data: - self.warn("%s is an empty file!" % f) + for script in self.scripts: + adjust = 0 + outfile = os.path.join(self.build_dir, script) + + if not self.force and not newer(script, outfile): + self.announce("not copying %s (output 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 - mo = first_line_re.match(data[0]) - if mo: - self.announce("Adjusting first line of file %s" % f) - data[0] = "#!"+sys.executable - # add optional command line options - if mo.group(1): - data[0] = data[0] + mo.group(1) - else: - data[0] = data[0] + "\n" - open(f, "w").writelines(data) + + match = first_line_re.match(first_line) + if match: + adjust = 1 + post_interp = match.group(1) + + if adjust: + self.announce("copying and adjusting %s -> %s" % + (script, self.build_dir)) + if not self.dry_run: + outf = open(outfile, "w") + outf.write("#!%s%s\n" % + (os.path.normpath(sys.executable), post_interp)) + outf.writelines(f.readlines()) + outf.close() + if f: + f.close() + else: + f.close() + self.copy_file(script, outfile) + + # copy_scripts () + +# class build_scripts |