diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/distutils/dep_util.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/distutils/dep_util.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,96 @@ +"""distutils.dep_util + +Utility functions for simple, timestamp-based dependency of files +and groups of files; also, function based entirely on such +timestamp dependency analysis.""" + +# This module should be kept compatible with Python 2.1. + +__revision__ = "$Id: dep_util.py 58049 2007-09-08 00:34:17Z skip.montanaro $" + +import os +from distutils.errors import DistutilsFileError + + +def newer (source, target): + """Return true if 'source' exists and is more recently modified than + 'target', or if 'source' exists and 'target' doesn't. Return false if + both exist and 'target' is the same age or younger than 'source'. + Raise DistutilsFileError if 'source' does not exist. + """ + if not os.path.exists(source): + raise DistutilsFileError, ("file '%s' does not exist" % + os.path.abspath(source)) + if not os.path.exists(target): + return 1 + + from stat import ST_MTIME + mtime1 = os.stat(source)[ST_MTIME] + mtime2 = os.stat(target)[ST_MTIME] + + return mtime1 > mtime2 + +# newer () + + +def newer_pairwise (sources, targets): + """Walk two filename lists in parallel, testing if each source is newer + than its corresponding target. Return a pair of lists (sources, + targets) where source is newer than target, according to the semantics + of 'newer()'. + """ + if len(sources) != len(targets): + raise ValueError, "'sources' and 'targets' must be same length" + + # build a pair of lists (sources, targets) where source is newer + n_sources = [] + n_targets = [] + for i in range(len(sources)): + if newer(sources[i], targets[i]): + n_sources.append(sources[i]) + n_targets.append(targets[i]) + + return (n_sources, n_targets) + +# newer_pairwise () + + +def newer_group (sources, target, missing='error'): + """Return true if 'target' is out-of-date with respect to any file + listed in 'sources'. In other words, if 'target' exists and is newer + than every file in 'sources', return false; otherwise return true. + 'missing' controls what we do when a source file is missing; the + default ("error") is to blow up with an OSError from inside 'stat()'; + if it is "ignore", we silently drop any missing source files; if it is + "newer", any missing source files make us assume that 'target' is + out-of-date (this is handy in "dry-run" mode: it'll make you pretend to + carry out commands that wouldn't work because inputs are missing, but + that doesn't matter because you're not actually going to run the + commands). + """ + # If the target doesn't even exist, then it's definitely out-of-date. + if not os.path.exists(target): + return 1 + + # Otherwise we have to find out the hard way: if *any* source file + # is more recent than 'target', then 'target' is out-of-date and + # we can immediately return true. If we fall through to the end + # of the loop, then 'target' is up-to-date and we return false. + from stat import ST_MTIME + target_mtime = os.stat(target)[ST_MTIME] + for source in sources: + if not os.path.exists(source): + if missing == 'error': # blow up when we stat() the file + pass + elif missing == 'ignore': # missing source dropped from + continue # target's dependency list + elif missing == 'newer': # missing source means target is + return 1 # out-of-date + + source_mtime = os.stat(source)[ST_MTIME] + if source_mtime > target_mtime: + return 1 + else: + return 0 + +# newer_group ()