--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/python-2.5.2/win32/Lib/os2emxpath.py Fri Apr 03 17:19:34 2009 +0100
@@ -0,0 +1,423 @@
+# Module 'os2emxpath' -- common operations on OS/2 pathnames
+"""Common pathname manipulations, OS/2 EMX version.
+
+Instead of importing this module directly, import os and refer to this
+module as os.path.
+"""
+
+import os
+import stat
+
+__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
+ "basename","dirname","commonprefix","getsize","getmtime",
+ "getatime","getctime", "islink","exists","lexists","isdir","isfile",
+ "ismount","walk","expanduser","expandvars","normpath","abspath",
+ "splitunc","curdir","pardir","sep","pathsep","defpath","altsep",
+ "extsep","devnull","realpath","supports_unicode_filenames"]
+
+# strings representing various path-related bits and pieces
+curdir = '.'
+pardir = '..'
+extsep = '.'
+sep = '/'
+altsep = '\\'
+pathsep = ';'
+defpath = '.;C:\\bin'
+devnull = 'nul'
+
+# Normalize the case of a pathname and map slashes to backslashes.
+# Other normalizations (such as optimizing '../' away) are not done
+# (this is done by normpath).
+
+def normcase(s):
+ """Normalize case of pathname.
+
+ Makes all characters lowercase and all altseps into seps."""
+ return s.replace('\\', '/').lower()
+
+
+# Return whether a path is absolute.
+# Trivial in Posix, harder on the Mac or MS-DOS.
+# For DOS it is absolute if it starts with a slash or backslash (current
+# volume), or if a pathname after the volume letter and colon / UNC resource
+# starts with a slash or backslash.
+
+def isabs(s):
+ """Test whether a path is absolute"""
+ s = splitdrive(s)[1]
+ return s != '' and s[:1] in '/\\'
+
+
+# Join two (or more) paths.
+
+def join(a, *p):
+ """Join two or more pathname components, inserting sep as needed"""
+ path = a
+ for b in p:
+ if isabs(b):
+ path = b
+ elif path == '' or path[-1:] in '/\\:':
+ path = path + b
+ else:
+ path = path + '/' + b
+ return path
+
+
+# Split a path in a drive specification (a drive letter followed by a
+# colon) and the path specification.
+# It is always true that drivespec + pathspec == p
+def splitdrive(p):
+ """Split a pathname into drive and path specifiers. Returns a 2-tuple
+"(drive,path)"; either part may be empty"""
+ if p[1:2] == ':':
+ return p[0:2], p[2:]
+ return '', p
+
+
+# Parse UNC paths
+def splitunc(p):
+ """Split a pathname into UNC mount point and relative path specifiers.
+
+ Return a 2-tuple (unc, rest); either part may be empty.
+ If unc is not empty, it has the form '//host/mount' (or similar
+ using backslashes). unc+rest is always the input path.
+ Paths containing drive letters never have an UNC part.
+ """
+ if p[1:2] == ':':
+ return '', p # Drive letter present
+ firstTwo = p[0:2]
+ if firstTwo == '/' * 2 or firstTwo == '\\' * 2:
+ # is a UNC path:
+ # vvvvvvvvvvvvvvvvvvvv equivalent to drive letter
+ # \\machine\mountpoint\directories...
+ # directory ^^^^^^^^^^^^^^^
+ normp = normcase(p)
+ index = normp.find('/', 2)
+ if index == -1:
+ ##raise RuntimeError, 'illegal UNC path: "' + p + '"'
+ return ("", p)
+ index = normp.find('/', index + 1)
+ if index == -1:
+ index = len(p)
+ return p[:index], p[index:]
+ return '', p
+
+
+# Split a path in head (everything up to the last '/') and tail (the
+# rest). After the trailing '/' is stripped, the invariant
+# join(head, tail) == p holds.
+# The resulting head won't end in '/' unless it is the root.
+
+def split(p):
+ """Split a pathname.
+
+ Return tuple (head, tail) where tail is everything after the final slash.
+ Either part may be empty."""
+
+ d, p = splitdrive(p)
+ # set i to index beyond p's last slash
+ i = len(p)
+ while i and p[i-1] not in '/\\':
+ i = i - 1
+ head, tail = p[:i], p[i:] # now tail has no slashes
+ # remove trailing slashes from head, unless it's all slashes
+ head2 = head
+ while head2 and head2[-1] in '/\\':
+ head2 = head2[:-1]
+ head = head2 or head
+ return d + head, tail
+
+
+# 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.
+
+def splitext(p):
+ """Split the extension from a pathname.
+
+ Extension is everything from the last dot to the end.
+ Return (root, ext), either part may be empty."""
+ root, ext = '', ''
+ for c in p:
+ if c in ['/','\\']:
+ root, ext = root + ext + c, ''
+ elif c == '.':
+ if ext:
+ root, ext = root + ext, c
+ else:
+ ext = c
+ elif ext:
+ ext = ext + c
+ else:
+ root = root + c
+ return root, ext
+
+
+# Return the tail (basename) part of a path.
+
+def basename(p):
+ """Returns the final component of a pathname"""
+ return split(p)[1]
+
+
+# Return the head (dirname) part of a path.
+
+def dirname(p):
+ """Returns the directory component of a pathname"""
+ return split(p)[0]
+
+
+# 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)
+ n = min(len(s1), len(s2))
+ for i in xrange(n):
+ if s1[i] != s2[i]:
+ return s1[:i]
+ return s1[:n]
+
+
+# Get size, mtime, atime of files.
+
+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 creation time of a file, reported by os.stat()."""
+ return os.stat(filename).st_ctime
+
+# Is a path a symbolic link?
+# This will always return false on systems where posix.lstat doesn't exist.
+
+def islink(path):
+ """Test for symbolic link. On OS/2 always returns false"""
+ return False
+
+
+# Does a path exist?
+# This is false for dangling symbolic links.
+
+def exists(path):
+ """Test whether a path exists"""
+ try:
+ st = os.stat(path)
+ except os.error:
+ return False
+ return True
+
+lexists = exists
+
+
+# Is a path a directory?
+
+def isdir(path):
+ """Test whether a path is a directory"""
+ try:
+ st = os.stat(path)
+ except os.error:
+ return False
+ return stat.S_ISDIR(st.st_mode)
+
+
+# Is a path a regular file?
+# This follows symbolic links, so both islink() and isdir() can be true
+# for the same path.
+
+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 mount point? Either a root (with or without drive letter)
+# or an UNC path with at most a / or \ after the mount point.
+
+def ismount(path):
+ """Test whether a path is a mount point (defined as root of drive)"""
+ unc, rest = splitunc(path)
+ if unc:
+ return rest in ("", "/", "\\")
+ p = splitdrive(path)[1]
+ return len(p) == 1 and p[0] in '/\\'
+
+
+# Directory tree walk.
+# For each directory under top (including top itself, but excluding
+# '.' and '..'), func(arg, dirname, filenames) is called, where
+# dirname is the name of the directory and filenames is the list
+# of files (and subdirectories etc.) in the directory.
+# The func may modify the filenames list, to implement a filter,
+# or to impose a different order of visiting.
+
+def walk(top, func, arg):
+ """Directory tree walk whth callback function.
+
+ walk(top, func, arg) calls func(arg, d, files) for each directory d
+ in the tree rooted at top (including top itself); files is a list
+ of all the files and subdirs in directory d."""
+ try:
+ names = os.listdir(top)
+ except os.error:
+ return
+ func(arg, top, names)
+ exceptions = ('.', '..')
+ for name in names:
+ if name not in exceptions:
+ name = join(top, name)
+ if isdir(name):
+ walk(name, func, arg)
+
+
+# Expand paths beginning with '~' or '~user'.
+# '~' means $HOME; '~user' means that user's home directory.
+# If the path doesn't begin with '~', or if the user or $HOME is unknown,
+# the path is returned unchanged (leaving error reporting to whatever
+# function is called with the expanded path as argument).
+# See also module 'glob' for expansion of *, ? and [...] in pathnames.
+# (A function should also be defined to do full *sh-style environment
+# variable expansion.)
+
+def expanduser(path):
+ """Expand ~ and ~user constructs.
+
+ If user or $HOME is unknown, do nothing."""
+ if path[:1] != '~':
+ return path
+ i, n = 1, len(path)
+ while i < n and path[i] not in '/\\':
+ i = i + 1
+ if i == 1:
+ if 'HOME' in os.environ:
+ userhome = os.environ['HOME']
+ elif not 'HOMEPATH' in os.environ:
+ return path
+ else:
+ try:
+ drive = os.environ['HOMEDRIVE']
+ except KeyError:
+ drive = ''
+ userhome = join(drive, os.environ['HOMEPATH'])
+ else:
+ return path
+ return userhome + path[i:]
+
+
+# Expand paths containing shell variable substitutions.
+# The following rules apply:
+# - no expansion within single quotes
+# - no escape character, except for '$$' which is translated into '$'
+# - ${varname} is accepted.
+# - varnames can be made out of letters, digits and the character '_'
+# XXX With COMMAND.COM you can use any characters in a variable name,
+# XXX except '^|<>='.
+
+def expandvars(path):
+ """Expand shell variables of form $var and ${var}.
+
+ Unknown variables are left unchanged."""
+ if '$' not in path:
+ return path
+ import string
+ varchars = string.letters + string.digits + '_-'
+ res = ''
+ index = 0
+ pathlen = len(path)
+ while index < pathlen:
+ c = path[index]
+ if c == '\'': # no expansion within single quotes
+ path = path[index + 1:]
+ pathlen = len(path)
+ try:
+ index = path.index('\'')
+ res = res + '\'' + path[:index + 1]
+ except ValueError:
+ res = res + path
+ index = pathlen - 1
+ elif c == '$': # variable or '$$'
+ if path[index + 1:index + 2] == '$':
+ res = res + c
+ index = index + 1
+ elif path[index + 1:index + 2] == '{':
+ path = path[index+2:]
+ pathlen = len(path)
+ try:
+ index = path.index('}')
+ var = path[:index]
+ if var in os.environ:
+ res = res + os.environ[var]
+ except ValueError:
+ res = res + path
+ index = pathlen - 1
+ else:
+ var = ''
+ index = index + 1
+ c = path[index:index + 1]
+ while c != '' and c in varchars:
+ var = var + c
+ index = index + 1
+ c = path[index:index + 1]
+ if var in os.environ:
+ res = res + os.environ[var]
+ if c != '':
+ res = res + c
+ else:
+ res = res + c
+ index = index + 1
+ return res
+
+
+# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A/B.
+
+def normpath(path):
+ """Normalize path, eliminating double slashes, etc."""
+ path = path.replace('\\', '/')
+ prefix, path = splitdrive(path)
+ while path[:1] == '/':
+ prefix = prefix + '/'
+ path = path[1:]
+ comps = path.split('/')
+ i = 0
+ while i < len(comps):
+ if comps[i] == '.':
+ del comps[i]
+ elif comps[i] == '..' and i > 0 and comps[i-1] not in ('', '..'):
+ del comps[i-1:i+1]
+ i = i - 1
+ elif comps[i] == '' and i > 0 and comps[i-1] != '':
+ del comps[i]
+ else:
+ i = i + 1
+ # If the path is now empty, substitute '.'
+ if not prefix and not comps:
+ comps.append('.')
+ return prefix + '/'.join(comps)
+
+
+# Return an absolute path.
+def abspath(path):
+ """Return the absolute version of a path"""
+ if not isabs(path):
+ path = join(os.getcwd(), path)
+ return normpath(path)
+
+# realpath is a no-op on systems without islink support
+realpath = abspath
+
+supports_unicode_filenames = False