remote-bzr: add support to push merges
[gitweb.git] / contrib / remote-helpers / git-remote-bzr
index aa7bc97beecc6af7adca5b6886d8e7c61f9173b1..6a7f836ea6a41a59a66f223c3f2aaaf603943e76 100755 (executable)
@@ -26,12 +26,14 @@ bzrlib.plugin.load_plugins()
 import bzrlib.generate_ids
 import bzrlib.transport
 import bzrlib.errors
+import bzrlib.ui
 
 import sys
 import os
 import json
 import re
 import StringIO
+import atexit, shutil, hashlib, urlparse, subprocess
 
 NAME_RE = re.compile('^([^<>]+)')
 AUTHOR_RE = re.compile('^([^<>]+?)? ?<([^<>]*)>$')
@@ -94,7 +96,7 @@ class Marks:
         return self.last_mark
 
     def is_marked(self, rev):
-        return self.marks.has_key(rev)
+        return rev in self.marks
 
     def new_mark(self, rev, mark):
         self.marks[rev] = mark
@@ -224,7 +226,7 @@ def export_files(tree, files):
             else:
                 mode = '100644'
 
-            # is the blog already exported?
+            # is the blob already exported?
             if h in filenodes:
                 mark = filenodes[h]
                 final.append((mode, mark, path))
@@ -383,18 +385,15 @@ class CustomTree():
     def __init__(self, repo, revid, parents, files):
         global files_cache
 
-        self.repo = repo
-        self.revid = revid
-        self.parents = parents
         self.updates = {}
 
         def copy_tree(revid):
             files = files_cache[revid] = {}
-            tree = repo.repository.revision_tree(revid)
             repo.lock_read()
+            tree = repo.repository.revision_tree(revid)
             try:
                 for path, entry in tree.iter_entries_by_dir():
-                    files[path] = entry.file_id
+                    files[path] = [entry.file_id, None]
             finally:
                 repo.unlock()
             return files
@@ -409,12 +408,18 @@ class CustomTree():
                 self.base_files = copy_tree(self.base_id)
 
         self.files = files_cache[revid] = self.base_files.copy()
+        self.rev_files = {}
+
+        for path, data in self.files.iteritems():
+            fid, mark = data
+            self.rev_files[fid] = [path, mark]
 
         for path, f in files.iteritems():
-            fid = self.files.get(path, None)
+            fid, mark = self.files.get(path, [None, None])
             if not fid:
                 fid = bzrlib.generate_ids.gen_file_id(path)
             f['path'] = path
+            self.rev_files[fid] = [path, mark]
             self.updates[fid] = f
 
     def last_revision(self):
@@ -424,16 +429,16 @@ class CustomTree():
         changes = []
 
         def get_parent(dirname, basename):
-            parent_fid = self.base_files.get(dirname, None)
+            parent_fid, mark = self.base_files.get(dirname, [None, None])
             if parent_fid:
                 return parent_fid
-            parent_fid = self.files.get(dirname, None)
+            parent_fid, mark = self.files.get(dirname, [None, None])
             if parent_fid:
                 return parent_fid
             if basename == '':
                 return None
             fid = bzrlib.generate_ids.gen_file_id(path)
-            d = add_entry(fid, dirname, 'directory')
+            add_entry(fid, dirname, 'directory')
             return fid
 
         def add_entry(fid, path, kind, mode = None):
@@ -454,9 +459,8 @@ class CustomTree():
                     (None, basename),
                     (None, kind),
                     (None, executable))
-            self.files[path] = change[0]
+            self.files[path] = [change[0], None]
             changes.append(change)
-            return change
 
         def update_entry(fid, path, kind, mode = None):
             dirname, basename = os.path.split(path)
@@ -476,9 +480,8 @@ class CustomTree():
                     (None, basename),
                     (None, kind),
                     (None, executable))
-            self.files[path] = change[0]
+            self.files[path] = [change[0], None]
             changes.append(change)
-            return change
 
         def remove_entry(fid, path, kind):
             dirname, basename = os.path.split(path)
@@ -493,7 +496,6 @@ class CustomTree():
                     (None, None))
             del self.files[path]
             changes.append(change)
-            return change
 
         for fid, f in self.updates.iteritems():
             path = f['path']
@@ -507,13 +509,22 @@ class CustomTree():
             else:
                 add_entry(fid, path, 'file', f['mode'])
 
+            self.files[path][1] = f['mark']
+            self.rev_files[fid][1] = f['mark']
+
         return changes
 
     def get_file_with_stat(self, file_id, path=None):
-        return (StringIO.StringIO(self.updates[file_id]['data']), None)
+        path, mark = self.rev_files[file_id]
+        return (StringIO.StringIO(blob_marks[mark]), None)
 
     def get_symlink_target(self, file_id):
-        return self.updates[file_id]['data']
+        path, mark = self.rev_files[file_id]
+        return blob_marks[mark]
+
+    def id2path(self, file_id):
+        path, mark = self.rev_files[file_id]
+        return path
 
 def c_style_unescape(string):
     if string[0] == string[-1] == '"':
@@ -521,7 +532,7 @@ def c_style_unescape(string):
     return string
 
 def parse_commit(parser):
-    global marks, blob_marks, bmarks, parsed_refs
+    global marks, blob_marks, parsed_refs
     global mode
 
     parents = []
@@ -547,13 +558,17 @@ def parse_commit(parser):
         parents.append(parser.get_mark())
         parser.next()
 
+    # fast-export adds an extra newline
+    if data[-1] == '\n':
+        data = data[:-1]
+
     files = {}
 
     for line in parser:
         if parser.check('M'):
             t, m, mark_ref, path = line.split(' ', 3)
             mark = int(mark_ref[1:])
-            f = { 'mode' : m, 'data' : blob_marks[mark] }
+            f = { 'mode' : m, 'mark' : mark }
         elif parser.check('D'):
             t, path = line.split(' ')
             f = { 'deleted' : True }
@@ -633,16 +648,21 @@ def do_export(parser):
     for ref, revid in parsed_refs.iteritems():
         if ref == 'refs/heads/master':
             repo.generate_revision_history(revid, marks.get_tip('master'))
-            revno, revid = repo.last_revision_info()
             if peer:
-                if hasattr(peer, "import_last_revision_info_and_tags"):
-                    peer.import_last_revision_info_and_tags(repo, revno, revid)
-                else:
-                    peer.import_last_revision_info(repo.repository, revno, revid)
-            else:
+                try:
+                    repo.push(peer, stop_revision=revid)
+                except bzrlib.errors.DivergedBranches:
+                    print "error %s non-fast forward" % ref
+                    continue
+
+            try:
                 wt = repo.bzrdir.open_workingtree()
                 wt.update()
+            except bzrlib.errors.NoWorkingTree:
+                pass
+
         print "ok %s" % ref
+
     print
 
 def do_capabilities(parser):
@@ -711,29 +731,50 @@ def get_repo(url, alias):
 
     return branch
 
+def fix_path(alias, orig_url):
+    url = urlparse.urlparse(orig_url, 'file')
+    if url.scheme != 'file' or os.path.isabs(url.path):
+        return
+    abs_url = urlparse.urljoin("%s/" % os.getcwd(), orig_url)
+    cmd = ['git', 'config', 'remote.%s.url' % alias, "bzr::%s" % abs_url]
+    subprocess.call(cmd)
+
 def main(args):
     global marks, prefix, dirname
     global tags, filenodes
     global blob_marks
     global parsed_refs
     global files_cache
+    global is_tmp
 
     alias = args[1]
     url = args[2]
 
-    prefix = 'refs/bzr/%s' % alias
     tags = {}
     filenodes = {}
     blob_marks = {}
     parsed_refs = {}
     files_cache = {}
+    marks = None
+
+    if alias[5:] == url:
+        is_tmp = True
+        alias = hashlib.sha1(alias).hexdigest()
+    else:
+        is_tmp = False
 
+    prefix = 'refs/bzr/%s' % alias
     gitdir = os.environ['GIT_DIR']
     dirname = os.path.join(gitdir, 'bzr', alias)
 
+    if not is_tmp:
+        fix_path(alias, url)
+
     if not os.path.exists(dirname):
         os.makedirs(dirname)
 
+    bzrlib.ui.ui_factory.be_quiet(True)
+
     repo = get_repo(url, alias)
 
     marks_path = os.path.join(dirname, 'marks-int')
@@ -753,6 +794,13 @@ def main(args):
             die('unhandled command: %s' % line)
         sys.stdout.flush()
 
-    marks.store()
+def bye():
+    if not marks:
+        return
+    if not is_tmp:
+        marks.store()
+    else:
+        shutil.rmtree(dirname)
 
+atexit.register(bye)
 sys.exit(main(sys.argv))