--- a/mercurial/posix.py Fri Jul 24 00:40:00 2009 +0200
+++ b/mercurial/posix.py Sun Jul 26 17:25:08 2009 +0200
@@ -7,7 +7,7 @@
from i18n import _
import osutil
-import os, sys, errno, stat, getpass, pwd, grp
+import os, sys, errno, stat, getpass, pwd, grp, fcntl
posixfile = open
nulldev = '/dev/null'
@@ -104,6 +104,44 @@
def localpath(path):
return path
+if sys.platform == 'darwin':
+ def realpath(path):
+ '''
+ Returns the true, canonical file system path equivalent to the given
+ path.
+
+ Equivalent means, in this case, resulting in the same, unique
+ file system link to the path. Every file system entry, whether a file,
+ directory, hard link or symbolic link or special, will have a single
+ path preferred by the system, but may allow multiple, differing path
+ lookups to point to it.
+
+ Most regular UNIX file systems only allow a file system entry to be
+ looked up by its distinct path. Obviously, this does not apply to case
+ insensitive file systems, whether case preserving or not. The most
+ complex issue to deal with is file systems transparently reencoding the
+ path, such as the non-standard Unicode normalisation required for HFS+
+ and HFSX.
+ '''
+ # Constants copied from /usr/include/sys/fcntl.h
+ F_GETPATH = 50
+ O_SYMLINK = 0x200000
+
+ try:
+ fd = os.open(path, O_SYMLINK)
+ except OSError, err:
+ if err.errno is errno.ENOENT:
+ return path
+ raise
+
+ try:
+ return fcntl.fcntl(fd, F_GETPATH, '\0' * 1024).rstrip('\0')
+ finally:
+ os.close(fd)
+else:
+ # Fallback to the likely inadequate Python builtin function.
+ realpath = os.path.realpath
+
def shellquote(s):
if os.sys.platform == 'OpenVMS':
return '"%s"' % s