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comparison mercurial/util.py @ 870:a82eae840447

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Teach walk code about absolute paths. The first consequence of this is that absolute and relative paths now all work in the same way. The second is that paths that lie outside the repository now cause an error to be reported, instead of something arbitrary and expensive being done. Internally, all of the serious work is in the util package. The new canonpath function takes an arbitrary path and either returns a canonical path or raises an error. Because it needs to know where the repository root is, it must be fed a repository or dirstate object, which has given commands.matchpats and friends a new parameter to pass along. The util.matcher function uses this to canonicalise globs and relative path names. Meanwhile, I've moved the Abort exception from commands to util, and killed off the redundant util.CommandError exception.
author Bryan O'Sullivan <bos@serpentine.com>
date Sun, 07 Aug 2005 12:43:11 -0800
parents 1e3a23719662
children c2e77581bc84
comparison
equal deleted inserted replaced
869:1e3a23719662 870:a82eae840447
14 for f in g: 14 for f in g:
15 if f not in seen: 15 if f not in seen:
16 seen[f] = 1 16 seen[f] = 1
17 yield f 17 yield f
18 18
19 class CommandError(Exception): pass 19 class Abort(Exception):
20 """Raised if a command needs to print an error and exit."""
20 21
21 def always(fn): return True 22 def always(fn): return True
22 def never(fn): return False 23 def never(fn): return False
23 24
24 def globre(pat, head = '^', tail = '$'): 25 def globre(pat, head = '^', tail = '$'):
66 res += re.escape(c) 67 res += re.escape(c)
67 return head + res + tail 68 return head + res + tail
68 69
69 _globchars = {'[': 1, '{': 1, '*': 1, '?': 1} 70 _globchars = {'[': 1, '{': 1, '*': 1, '?': 1}
70 71
71 def matcher(cwd, names, inc, exc, head = ''): 72 def canonpath(repo, cwd, myname):
73 rootsep = repo.root + os.sep
74 name = myname
75 if not name.startswith(os.sep):
76 name = os.path.join(repo.root, cwd, name)
77 name = os.path.normpath(name)
78 if name.startswith(rootsep):
79 return name[len(rootsep):]
80 elif name == repo.root:
81 return ''
82 else:
83 raise Abort('%s not under repository root' % myname)
84
85 def matcher(repo, cwd, names, inc, exc, head = ''):
72 def patkind(name): 86 def patkind(name):
73 for prefix in 're:', 'glob:', 'path:': 87 for prefix in 're:', 'glob:', 'path:':
74 if name.startswith(prefix): return name.split(':', 1) 88 if name.startswith(prefix): return name.split(':', 1)
75 for c in name: 89 for c in name:
76 if c in _globchars: return 'glob', name 90 if c in _globchars: return 'glob', name
77 return 'relpath', name 91 return 'relpath', name
78
79 cwdsep = cwd + os.sep
80 92
81 def regex(name, tail): 93 def regex(name, tail):
82 '''convert a pattern into a regular expression''' 94 '''convert a pattern into a regular expression'''
83 kind, name = patkind(name) 95 kind, name = patkind(name)
84 if kind == 're': 96 if kind == 're':
85 return name 97 return name
86 elif kind == 'path': 98 elif kind == 'path':
87 return '^' + re.escape(name) + '$' 99 return '^' + re.escape(name) + '$'
88 if cwd: name = os.path.join(cwdsep, name)
89 name = os.path.normpath(name)
90 if name == '.': name = '**'
91 return head + globre(name, '', tail) 100 return head + globre(name, '', tail)
92 101
93 def matchfn(pats, tail): 102 def matchfn(pats, tail):
94 """build a matching function from a set of patterns""" 103 """build a matching function from a set of patterns"""
95 if pats: 104 if pats:
102 for p in pat.split(os.sep): 111 for p in pat.split(os.sep):
103 if patkind(p)[0] == 'glob': break 112 if patkind(p)[0] == 'glob': break
104 root.append(p) 113 root.append(p)
105 return os.sep.join(root) 114 return os.sep.join(root)
106 115
107 patkinds = map(patkind, names) 116 pats = []
108 pats = [name for (kind, name) in patkinds if kind != 'relpath'] 117 files = []
109 files = [name for (kind, name) in patkinds if kind == 'relpath'] 118 roots = []
110 roots = filter(None, map(globprefix, pats)) + files 119 for kind, name in map(patkind, names):
111 if cwd: roots = [cwdsep + r for r in roots] 120 if kind in ('glob', 'relpath'):
121 name = canonpath(repo, cwd, name)
122 if name == '':
123 kind, name = 'glob', '**'
124 if kind in ('glob', 're'):
125 pats.append(name)
126 if kind == 'glob':
127 root = globprefix(name)
128 if root: roots.append(root)
129 elif kind == 'relpath':
130 files.append(name)
131 roots.append(name)
112 132
113 patmatch = matchfn(pats, '$') or always 133 patmatch = matchfn(pats, '$') or always
114 filematch = matchfn(files, '(?:/|$)') or always 134 filematch = matchfn(files, '(?:/|$)') or always
115 incmatch = matchfn(inc, '(?:/|$)') or always 135 incmatch = matchfn(inc, '(?:/|$)') or always
116 excmatch = matchfn(exc, '(?:/|$)') or (lambda fn: False) 136 excmatch = matchfn(exc, '(?:/|$)') or (lambda fn: False)
127 if rc: 147 if rc:
128 errmsg = "%s %s" % (os.path.basename(cmd.split(None, 1)[0]), 148 errmsg = "%s %s" % (os.path.basename(cmd.split(None, 1)[0]),
129 explain_exit(rc)[0]) 149 explain_exit(rc)[0])
130 if errprefix: 150 if errprefix:
131 errmsg = "%s: %s" % (errprefix, errmsg) 151 errmsg = "%s: %s" % (errprefix, errmsg)
132 raise CommandError(errmsg) 152 raise Abort(errmsg)
133 153
134 def rename(src, dst): 154 def rename(src, dst):
135 try: 155 try:
136 os.rename(src, dst) 156 os.rename(src, dst)
137 except: 157 except: