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Commit Description:
Merge pull request #17 from nattee/master...
Commit Description:
Merge pull request #17 from nattee/master
upgrade to current working snapshot
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lib/assets/Lib/genericpath.py
| 106 lines
| 3.1 KiB
| text/x-python
| PythonLexer
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| r584 | """ | |||
| Path operations common to more than one OS | ||||
| Do not use directly. The OS specific modules import the appropriate | ||||
| functions from this module themselves. | ||||
| """ | ||||
| import os | ||||
| import stat | ||||
| __all__ = ['commonprefix', 'exists', 'getatime', 'getctime', 'getmtime', | ||||
| 'getsize', 'isdir', 'isfile'] | ||||
| # Does a path exist? | ||||
| # This is false for dangling symbolic links on systems that support them. | ||||
| def exists(path): | ||||
| """Test whether a path exists. Returns False for broken symbolic links""" | ||||
| try: | ||||
| os.stat(path) | ||||
| except os.error: | ||||
| return False | ||||
| return True | ||||
| # This follows symbolic links, so both islink() and isdir() can be true | ||||
| # for the same path on systems that support symlinks | ||||
| def isfile(path): | ||||
| """Test whether a path is a regular file""" | ||||
| try: | ||||
| st = os.stat(path) | ||||
| except os.error: | ||||
| return False | ||||
| return stat.S_ISREG(st.st_mode) | ||||
| # Is a path a directory? | ||||
| # This follows symbolic links, so both islink() and isdir() | ||||
| # can be true for the same path on systems that support symlinks | ||||
| def isdir(s): | ||||
| """Return true if the pathname refers to an existing directory.""" | ||||
| try: | ||||
| st = os.stat(s) | ||||
| except os.error: | ||||
| return False | ||||
| return stat.S_ISDIR(st.st_mode) | ||||
| def getsize(filename): | ||||
| """Return the size of a file, reported by os.stat().""" | ||||
| return os.stat(filename).st_size | ||||
| def getmtime(filename): | ||||
| """Return the last modification time of a file, reported by os.stat().""" | ||||
| return os.stat(filename).st_mtime | ||||
| def getatime(filename): | ||||
| """Return the last access time of a file, reported by os.stat().""" | ||||
| return os.stat(filename).st_atime | ||||
| def getctime(filename): | ||||
| """Return the metadata change time of a file, reported by os.stat().""" | ||||
| return os.stat(filename).st_ctime | ||||
| # Return the longest prefix of all list elements. | ||||
| def commonprefix(m): | ||||
| "Given a list of pathnames, returns the longest common leading component" | ||||
| if not m: return '' | ||||
| s1 = min(m) | ||||
| s2 = max(m) | ||||
| for i, c in enumerate(s1): | ||||
| if c != s2[i]: | ||||
| return s1[:i] | ||||
| return s1 | ||||
| # Split a path in root and extension. | ||||
| # The extension is everything starting at the last dot in the last | ||||
| # pathname component; the root is everything before that. | ||||
| # It is always true that root + ext == p. | ||||
| # Generic implementation of splitext, to be parametrized with | ||||
| # the separators | ||||
| def _splitext(p, sep, altsep, extsep): | ||||
| """Split the extension from a pathname. | ||||
| Extension is everything from the last dot to the end, ignoring | ||||
| leading dots. Returns "(root, ext)"; ext may be empty.""" | ||||
| # NOTE: This code must work for text and bytes strings. | ||||
| sepIndex = p.rfind(sep) | ||||
| if altsep: | ||||
| altsepIndex = p.rfind(altsep) | ||||
| sepIndex = max(sepIndex, altsepIndex) | ||||
| dotIndex = p.rfind(extsep) | ||||
| if dotIndex > sepIndex: | ||||
| # skip all leading dots | ||||
| filenameIndex = sepIndex + 1 | ||||
| while filenameIndex < dotIndex: | ||||
| if p[filenameIndex:filenameIndex+1] != extsep: | ||||
| return p[:dotIndex], p[dotIndex:] | ||||
| filenameIndex += 1 | ||||
| return p, p[:0] | ||||