Signed-off-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
---
contrib/remote-helpers/git-remote-hg | 217 ++++++++++++++++++++++++++++++++++-
1 file changed, 215 insertions(+), 2 deletions(-)
diff --git a/contrib/remote-helpers/git-remote-hg b/contrib/remote-helpers/git-remote-hg
index e37e278..fcceede 100755
--- a/contrib/remote-helpers/git-remote-hg
+++ b/contrib/remote-helpers/git-remote-hg
@@ -9,7 +9,7 @@
# Then you can clone with:
# git clone hg::/path/to/mercurial/repo/
-from mercurial import hg, ui, bookmarks
+from mercurial import hg, ui, bookmarks, context
import re
import sys
@@ -18,6 +18,7 @@ import json
NAME_RE = re.compile('^([^<>]+)')
AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]+)>$')
+RAW_AUTHOR_RE = re.compile('^(\w+) (?:(.+)? )?<(.+)> (\d+) ([+-]\d+)')
def die(msg, *args):
sys.stderr.write('ERROR: %s\n' % (msg % args))
@@ -32,12 +33,17 @@ def gitmode(flags):
def gittz(tz):
return '%+03d%02d' % (-tz / 3600, -tz % 3600 / 60)
+def hgmode(mode):
+ m = { '0100755': 'x', '0120000': 'l' }
+ return m.get(mode, '')
+
class Marks:
def __init__(self, path):
self.path = path
self.tips = {}
self.marks = {}
+ self.rev_marks = {}
self.last_mark = 0
self.load()
@@ -52,6 +58,9 @@ class Marks:
self.marks = tmp['marks']
self.last_mark = tmp['last-mark']
+ for rev, mark in self.marks.iteritems():
+ self.rev_marks[mark] = int(rev)
+
def dict(self):
return { 'tips': self.tips, 'marks': self.marks, 'last-mark' : self.last_mark }
@@ -64,11 +73,19 @@ class Marks:
def from_rev(self, rev):
return self.marks[str(rev)]
+ def to_rev(self, mark):
+ return self.rev_marks[mark]
+
def get_mark(self, rev):
self.last_mark += 1
self.marks[str(rev)] = self.last_mark
return self.last_mark
+ def new_mark(self, rev, mark):
+ self.marks[str(rev)] = mark
+ self.rev_marks[mark] = rev
+ self.last_mark = mark
+
def is_marked(self, rev):
return self.marks.has_key(str(rev))
@@ -106,6 +123,35 @@ class Parser:
if self.line == 'done':
self.line = None
+ def get_mark(self):
+ i = self.line.index(':') + 1
+ return int(self.line[i:])
+
+ def get_data(self):
+ if not self.check('data'):
+ return None
+ i = self.line.index(' ') + 1
+ size = int(self.line[i:])
+ return sys.stdin.read(size)
+
+ def get_author(self):
+ m = RAW_AUTHOR_RE.match(self.line)
+ if not m:
+ return None
+ _, name, email, date, tz = m.groups()
+
+ if email != 'unknown':
+ if name:
+ user = '%s <%s>' % (name, email)
+ else:
+ user = '<%s>' % (email)
+ else:
+ user = name
+
+ tz = int(tz)
+ tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
+ return (user, int(date), -tz)
+
def export_file(fc):
d = fc.data()
print "M %s inline %s" % (gitmode(fc.flags()), fc.path())
@@ -174,6 +220,10 @@ def rev_to_mark(rev):
global marks
return marks.from_rev(rev)
+def mark_to_rev(mark):
+ global marks
+ return marks.to_rev(mark)
+
def export_ref(repo, name, kind, head):
global prefix, marks
@@ -263,9 +313,17 @@ def do_capabilities(parser):
global prefix, dirname
print "import"
+ print "export"
print "refspec refs/heads/branches/*:%s/branches/*" % prefix
print "refspec refs/heads/*:%s/bookmarks/*" % prefix
print "refspec refs/tags/*:%s/tags/*" % prefix
+
+ path = os.path.join(dirname, 'marks-git')
+
+ if os.path.exists(path):
+ print "*import-marks %s" % path
+ print "*export-marks %s" % path
+
print
def get_branch_tip(repo, branch):
@@ -352,8 +410,161 @@ def do_import(parser):
print 'done'
+def parse_blob(parser):
+ global blob_marks
+
+ parser.next()
+ mark = parser.get_mark()
+ parser.next()
+ data = parser.get_data()
+ blob_marks[mark] = data
+ parser.next()
+ return
+
+def parse_commit(parser):
+ global marks, blob_marks, bmarks, parsed_refs
+
+ from_mark = merge_mark = None
+
+ ref = parser[1]
+ parser.next()
+
+ commit_mark = parser.get_mark()
+ parser.next()
+ author = parser.get_author()
+ parser.next()
+ committer = parser.get_author()
+ parser.next()
+ data = parser.get_data()
+ parser.next()
+ if parser.check('from'):
+ from_mark = parser.get_mark()
+ parser.next()
+ if parser.check('merge'):
+ merge_mark = parser.get_mark()
+ parser.next()
+ if parser.check('merge'):
+ die('octopus merges are not supported yet')
+
+ files = {}
+
+ for line in parser:
+ if parser.check('M'):
+ t, m, mark_ref, path = line.split(' ')
+ mark = int(mark_ref[1:])
+ f = { 'mode' : hgmode(m), 'data' : blob_marks[mark] }
+ elif parser.check('D'):
+ t, path = line.split(' ')
+ f = { 'deleted' : True }
+ else:
+ die('Unknown file command: %s' % line)
+ files[path] = f
+
+ def getfilectx(repo, memctx, f):
+ of = files[f]
+ if 'deleted' in of:
+ raise IOError
+ is_exec = of['mode'] == 'x'
+ is_link = of['mode'] == 'l'
+ return context.memfilectx(f, of['data'], is_link, is_exec, None)
+
+ repo = parser.repo
+
+ user, date, tz = author
+ extra = {}
+
+ if committer != author:
+ extra['committer'] = "%s %u %u" % committer
+
+ if from_mark:
+ p1 = repo.changelog.node(mark_to_rev(from_mark))
+ else:
+ p1 = '\0' * 20
+
+ if merge_mark:
+ p2 = repo.changelog.node(mark_to_rev(merge_mark))
+ else:
+ p2 = '\0' * 20
+
+ ctx = context.memctx(repo, (p1, p2), data,
+ files.keys(), getfilectx,
+ user, (date, tz), extra)
+
+ node = repo.commitctx(ctx)
+
+ rev = repo[node].rev()
+
+ parsed_refs[ref] = node
+
+ marks.new_mark(rev, commit_mark)
+
+def parse_reset(parser):
+ ref = parser[1]
+ parser.next()
+ # ugh
+ if parser.check('commit'):
+ parse_commit(parser)
+ return
+ if not parser.check('from'):
+ return
+ from_mark = parser.get_mark()
+ parser.next()
+
+ node = parser.repo.changelog.node(mark_to_rev(from_mark))
+ parsed_refs[ref] = node
+
+def parse_tag(parser):
+ name = parser[1]
+ parser.next()
+ from_mark = parser.get_mark()
+ parser.next()
+ tagger = parser.get_author()
+ parser.next()
+ data = parser.get_data()
+ parser.next()
+
+ # nothing to do
+
+def do_export(parser):
+ global parsed_refs, bmarks
+
+ parser.next()
+
+ for line in parser.each_block('done'):
+ if parser.check('blob'):
+ parse_blob(parser)
+ elif parser.check('commit'):
+ parse_commit(parser)
+ elif parser.check('reset'):
+ parse_reset(parser)
+ elif parser.check('tag'):
+ parse_tag(parser)
+ elif parser.check('feature'):
+ pass
+ else:
+ die('unhandled export command: %s' % line)
+
+ for ref, node in parsed_refs.iteritems():
+ if ref.startswith('refs/heads/branches'):
+ pass
+ elif ref.startswith('refs/heads/'):
+ bmark = ref[len('refs/heads/'):]
+ if bmark in bmarks:
+ old = bmarks[bmark].hex()
+ else:
+ old = ''
+ if not bookmarks.pushbookmark(parser.repo, bmark, old, node):
+ continue
+ elif ref.startswith('refs/tags/'):
+ tag = ref[len('refs/tags/'):]
+ parser.repo.tag([tag], node, None, True, None, {})
+ print "ok %s" % ref
+
+ print
+
def main(args):
- global prefix, dirname, marks, branches, bmarks
+ global prefix, dirname, branches, bmarks
+ global marks, blob_marks, parsed_refs
alias = args[1]
url = args[2]
@@ -362,6 +573,8 @@ def main(args):
dirname = os.path.join(gitdir, 'hg', alias)
branches = {}
bmarks = {}
+ blob_marks = {}
+ parsed_refs = {}
repo = get_repo(url, alias)
prefix = 'refs/hg/%s' % alias
--
1.8.0
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