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comparison mercurial/util.py @ 704:5ca319a641e1

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Make makelock and readlock work on filesystems without symlink support. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Make makelock and readlock work on filesystems without symlink support. This way you can have a repository on a fat partiton, e.g. a USB stick. manifest hash: cea2c120ef2b25a50c5d98b59648f773feefe470 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFC1t5yW7P1GVgWeRoRAsKjAJ9BFcn/EqBK/dmJ4BY1pPIZIbDDJACghN3p VCQS6CJ72MHpzhOOsnOpHzE= =laDT -----END PGP SIGNATURE-----
author Thomas Arendsen Hein <thomas@intevation.de>
date Thu, 14 Jul 2005 22:51:47 +0100
parents df78d8ccac4c
children 574869103985
comparison
equal deleted inserted replaced
703:fb6f85ecc863 704:5ca319a641e1
3 # Copyright 2005 K. Thananchayan <thananck@yahoo.com> 3 # Copyright 2005 K. Thananchayan <thananck@yahoo.com>
4 # 4 #
5 # This software may be used and distributed according to the terms 5 # This software may be used and distributed according to the terms
6 # of the GNU General Public License, incorporated herein by reference. 6 # of the GNU General Public License, incorporated herein by reference.
7 7
8 import os 8 import os, errno
9 9
10 def unique(g): 10 def unique(g):
11 seen = {} 11 seen = {}
12 for f in g: 12 for f in g:
13 if f not in seen: 13 if f not in seen:
59 elif os.path.isfile(srcname): 59 elif os.path.isfile(srcname):
60 copyfile(srcname, dstname) 60 copyfile(srcname, dstname)
61 else: 61 else:
62 raise IOError("Not a regular file: %r" % srcname) 62 raise IOError("Not a regular file: %r" % srcname)
63 63
64 def _makelock_file(info, pathname):
65 ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
66 os.write(ld, info)
67 os.close(ld)
68
69 def _readlock_file(pathname):
70 return file(pathname).read()
71
64 # Platfor specific varients 72 # Platfor specific varients
65 if os.name == 'nt': 73 if os.name == 'nt':
66 nulldev = 'NUL:' 74 nulldev = 'NUL:'
67 75
68 def is_exec(f, last): 76 def is_exec(f, last):
72 pass 80 pass
73 81
74 def pconvert(path): 82 def pconvert(path):
75 return path.replace("\\", "/") 83 return path.replace("\\", "/")
76 84
77 def makelock(info, pathname): 85 makelock = _makelock_file
78 ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL) 86 readlock = _readlock_file
79 os.write(ld, info)
80 os.close(ld)
81
82 def readlock(pathname):
83 return file(pathname).read()
84 87
85 else: 88 else:
86 nulldev = '/dev/null' 89 nulldev = '/dev/null'
87 90
88 def is_exec(f, last): 91 def is_exec(f, last):
103 106
104 def pconvert(path): 107 def pconvert(path):
105 return path 108 return path
106 109
107 def makelock(info, pathname): 110 def makelock(info, pathname):
108 os.symlink(info, pathname) 111 try:
112 os.symlink(info, pathname)
113 except OSError, why:
114 if why.errno == errno.EEXIST:
115 raise
116 else:
117 _makelock_file(info, pathname)
109 118
110 def readlock(pathname): 119 def readlock(pathname):
111 return os.readlink(pathname) 120 try:
121 return os.readlink(pathname)
122 except OSError, why:
123 if why.errno == errno.EINVAL:
124 return _readlock_file(pathname)
125 else:
126 raise