Mercurial > hg
view hgext/convert/git.py @ 16365:5d61e007d957
mq: use exact matching in the second dirstate walking for efficiency of 'qnew'
'hg qnew' with pattern/-I/-X creates matching object with them, and
uses it twice for 'dirstate.walk()': via 'repo.status()' and
'repo.commit()'.
this may cause full manifest scan in the second 'dirstate.walk()',
even though mq already knows complete target filenames at the first
'dirstate.walk()'.
this patch creates exact matching object also in this case, and use it
at 'repo.commit()' invocation to avoid full manifest scan in the
second 'dirstate.walk()'.
even though 'inclsubs' is added to 'pats' for original matching
object, it is also passed to exact matching object, because
subrepositories are deleted from result of 'dirstate.walk()' at the
end of it.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Thu, 05 Apr 2012 23:52:06 +0900 |
parents | ba42eb722bb3 |
children | 525fdb738975 |
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# git.py - git support for the convert extension # # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import os from mercurial import util from mercurial.node import hex, nullid from mercurial.i18n import _ from common import NoRepo, commit, converter_source, checktool class convert_git(converter_source): # Windows does not support GIT_DIR= construct while other systems # cannot remove environment variable. Just assume none have # both issues. if util.safehasattr(os, 'unsetenv'): def gitopen(self, s, noerr=False): prevgitdir = os.environ.get('GIT_DIR') os.environ['GIT_DIR'] = self.path try: if noerr: (stdin, stdout, stderr) = util.popen3(s) return stdout else: return util.popen(s, 'rb') finally: if prevgitdir is None: del os.environ['GIT_DIR'] else: os.environ['GIT_DIR'] = prevgitdir else: def gitopen(self, s, noerr=False): if noerr: (sin, so, se) = util.popen3('GIT_DIR=%s %s' % (self.path, s)) return so else: return util.popen('GIT_DIR=%s %s' % (self.path, s), 'rb') def gitread(self, s): fh = self.gitopen(s) data = fh.read() return data, fh.close() def __init__(self, ui, path, rev=None): super(convert_git, self).__init__(ui, path, rev=rev) if os.path.isdir(path + "/.git"): path += "/.git" if not os.path.exists(path + "/objects"): raise NoRepo(_("%s does not look like a Git repository") % path) checktool('git', 'git') self.path = path def getheads(self): if not self.rev: heads, ret = self.gitread('git rev-parse --branches --remotes') heads = heads.splitlines() else: heads, ret = self.gitread("git rev-parse --verify %s" % self.rev) heads = [heads[:-1]] if ret: raise util.Abort(_('cannot retrieve git heads')) return heads def catfile(self, rev, type): if rev == hex(nullid): raise IOError() data, ret = self.gitread("git cat-file %s %s" % (type, rev)) if ret: raise util.Abort(_('cannot read %r object at %s') % (type, rev)) return data def getfile(self, name, rev): data = self.catfile(rev, "blob") mode = self.modecache[(name, rev)] return data, mode def getchanges(self, version): self.modecache = {} fh = self.gitopen("git diff-tree -z --root -m -r %s" % version) changes = [] seen = set() entry = None for l in fh.read().split('\x00'): if not entry: if not l.startswith(':'): continue entry = l continue f = l if f not in seen: seen.add(f) entry = entry.split() h = entry[3] if entry[1] == '160000': raise util.Abort('git submodules are not supported!') p = (entry[1] == "100755") s = (entry[1] == "120000") self.modecache[(f, h)] = (p and "x") or (s and "l") or "" changes.append((f, h)) entry = None if fh.close(): raise util.Abort(_('cannot read changes in %s') % version) return (changes, {}) def getcommit(self, version): c = self.catfile(version, "commit") # read the commit hash end = c.find("\n\n") message = c[end + 2:] message = self.recode(message) l = c[:end].splitlines() parents = [] author = committer = None for e in l[1:]: n, v = e.split(" ", 1) if n == "author": p = v.split() tm, tz = p[-2:] author = " ".join(p[:-2]) if author[0] == "<": author = author[1:-1] author = self.recode(author) if n == "committer": p = v.split() tm, tz = p[-2:] committer = " ".join(p[:-2]) if committer[0] == "<": committer = committer[1:-1] committer = self.recode(committer) if n == "parent": parents.append(v) if committer and committer != author: message += "\ncommitter: %s\n" % committer tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) date = tm + " " + str(tz) c = commit(parents=parents, date=date, author=author, desc=message, rev=version) return c def gettags(self): tags = {} alltags = {} fh = self.gitopen('git ls-remote --tags "%s"' % self.path) prefix = 'refs/tags/' # Build complete list of tags, both annotated and bare ones for line in fh: line = line.strip() node, tag = line.split(None, 1) if not tag.startswith(prefix): continue alltags[tag[len(prefix):]] = node if fh.close(): raise util.Abort(_('cannot read tags from %s') % self.path) # Filter out tag objects for annotated tag refs for tag in alltags: if tag.endswith('^{}'): tags[tag[:-3]] = alltags[tag] else: if tag + '^{}' in alltags: continue else: tags[tag] = alltags[tag] return tags def getchangedfiles(self, version, i): changes = [] if i is None: fh = self.gitopen("git diff-tree --root -m -r %s" % version) for l in fh: if "\t" not in l: continue m, f = l[:-1].split("\t") changes.append(f) else: fh = self.gitopen('git diff-tree --name-only --root -r %s "%s^%s" --' % (version, version, i + 1)) changes = [f.rstrip('\n') for f in fh] if fh.close(): raise util.Abort(_('cannot read changes in %s') % version) return changes def getbookmarks(self): bookmarks = {} # Interesting references in git are prefixed prefix = 'refs/heads/' prefixlen = len(prefix) # factor two commands gitcmd = { 'remote/': 'git ls-remote --heads origin', '': 'git show-ref'} # Origin heads for reftype in gitcmd: try: fh = self.gitopen(gitcmd[reftype], noerr=True) for line in fh: line = line.strip() rev, name = line.split(None, 1) if not name.startswith(prefix): continue name = '%s%s' % (reftype, name[prefixlen:]) bookmarks[name] = rev except: pass return bookmarks