ref: 986886f2b8ab4a7e1b3d66e99934d8fdab537be9
dir: /sys/src/cmd/hg/hgext/convert/git.py/
# 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, incorporated herein by reference.
import os
from mercurial import util
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 hasattr(os, 'unsetenv'):
def gitcmd(self, s):
prevgitdir = os.environ.get('GIT_DIR')
os.environ['GIT_DIR'] = self.path
try:
return util.popen(s, 'rb')
finally:
if prevgitdir is None:
del os.environ['GIT_DIR']
else:
os.environ['GIT_DIR'] = prevgitdir
else:
def gitcmd(self, s):
return util.popen('GIT_DIR=%s %s' % (self.path, s), 'rb')
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 repo" % path)
checktool('git', 'git')
self.path = path
def getheads(self):
if not self.rev:
return self.gitcmd('git rev-parse --branches --remotes').read().splitlines()
else:
fh = self.gitcmd("git rev-parse --verify %s" % self.rev)
return [fh.read()[:-1]]
def catfile(self, rev, type):
if rev == "0" * 40: raise IOError()
fh = self.gitcmd("git cat-file %s %s" % (type, rev))
return fh.read()
def getfile(self, name, rev):
return self.catfile(rev, "blob")
def getmode(self, name, rev):
return self.modecache[(name, rev)]
def getchanges(self, version):
self.modecache = {}
fh = self.gitcmd("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]
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
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 = {}
fh = self.gitcmd('git ls-remote --tags "%s"' % self.path)
prefix = 'refs/tags/'
for line in fh:
line = line.strip()
if not line.endswith("^{}"):
continue
node, tag = line.split(None, 1)
if not tag.startswith(prefix):
continue
tag = tag[len(prefix):-3]
tags[tag] = node
return tags
def getchangedfiles(self, version, i):
changes = []
if i is None:
fh = self.gitcmd("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)
fh.close()
else:
fh = self.gitcmd('git diff-tree --name-only --root -r %s "%s^%s" --'
% (version, version, i+1))
changes = [f.rstrip('\n') for f in fh]
fh.close()
return changes