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Refactor tags code to prepare for improving the algorithm

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This commit is contained in:
Matt Mackall 2007-03-14 16:40:47 -05:00
parent c1ade819b5
commit bc68a5f878
1 changed files with 37 additions and 36 deletions
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73
mercurial/localrepo.py
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@ -257,55 +257,56 @@ class localrepository(repo.repository):
def tags(self):
'''return a mapping of tag to node'''
if not self.tagscache:
self.tagscache = {}
if self.tagscache:
return self.tagscache
def parsetag(line, context):
if not line:
return
self.tagscache = {}
def readtags(lines, fn):
filetags = {}
count = 0
def warn(msg):
self.ui.warn(_("%s, line %s: %s\n") % (fn, count, msg))
for l in lines:
count += 1
if not l:
continue
s = l.split(" ", 1)
if len(s) != 2:
self.ui.warn(_("%s: cannot parse entry\n") % context)
return
warn(_("cannot parse entry"))
continue
node, key = s
key = util.tolocal(key.strip()) # stored in UTF-8
try:
bin_n = bin(node)
except TypeError:
self.ui.warn(_("%s: node '%s' is not well formed\n") %
(context, node))
return
warn(_("node '%s' is not well formed") % node)
continue
if bin_n not in self.changelog.nodemap:
self.ui.warn(_("%s: tag '%s' refers to unknown node\n") %
(context, key))
return
warn(_("tag '%s' refers to unknown node") % key)
continue
self.tagscache[key] = bin_n
# read the tags file from each head, ending with the tip,
# and add each tag found to the map, with "newer" ones
# taking precedence
f = None
for rev, node, fnode in self._hgtagsnodes():
f = (f and f.filectx(fnode) or
self.filectx('.hgtags', fileid=fnode))
count = 0
for l in f.data().splitlines():
count += 1
parsetag(l, _("%s, line %d") % (str(f), count))
# read the tags file from each head, ending with the tip,
# and add each tag found to the map, with "newer" ones
# taking precedence
f = None
for rev, node, fnode in self._hgtagsnodes():
f = (f and f.filectx(fnode) or
self.filectx('.hgtags', fileid=fnode))
readtags(f.data().splitlines(), f)
try:
f = self.opener("localtags")
count = 0
for l in f:
# localtags are stored in the local character set
# while the internal tag table is stored in UTF-8
l = util.fromlocal(l)
count += 1
parsetag(l, _("localtags, line %d") % count)
except IOError:
pass
try:
data = util.fromlocal(self.opener("localtags").read())
# localtags are stored in the local character set
# while the internal tag table is stored in UTF-8
readtags(data.splitlines(), "localtags")
except IOError:
pass
self.tagscache['tip'] = self.changelog.tip()
self.tagscache['tip'] = self.changelog.tip()
return self.tagscache