hgext/convert/convcmd.py
changeset 5631 96e16af92f2b
parent 5556 61fdf2558c0a
child 5632 fe2e81229819
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hgext/convert/convcmd.py	Sun Dec 09 15:25:36 2007 +0100
@@ -0,0 +1,308 @@
+# convcmd - convert extension commands definition
+#
+# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms
+# of the GNU General Public License, incorporated herein by reference.
+
+from common import NoRepo, SKIPREV, converter_source, converter_sink, mapfile
+from cvs import convert_cvs
+from darcs import darcs_source
+from git import convert_git
+from hg import mercurial_source, mercurial_sink
+from subversion import debugsvnlog, svn_source, svn_sink
+import filemap
+
+import os, shutil
+from mercurial import hg, util
+from mercurial.i18n import _
+
+source_converters = [
+    ('cvs', convert_cvs),
+    ('git', convert_git),
+    ('svn', svn_source),
+    ('hg', mercurial_source),
+    ('darcs', darcs_source),
+    ]
+
+sink_converters = [
+    ('hg', mercurial_sink),
+    ('svn', svn_sink),
+    ]
+
+def convertsource(ui, path, type, rev):
+    exceptions = []
+    for name, source in source_converters:
+        try:
+            if not type or name == type:
+                return source(ui, path, rev)
+        except NoRepo, inst:
+            exceptions.append(inst)
+    if not ui.quiet:
+        for inst in exceptions:
+            ui.write(_("%s\n") % inst)
+    raise util.Abort('%s: unknown repository type' % path)
+
+def convertsink(ui, path, type):
+    for name, sink in sink_converters:
+        try:
+            if not type or name == type:
+                return sink(ui, path)
+        except NoRepo, inst:
+            ui.note(_("convert: %s\n") % inst)
+    raise util.Abort('%s: unknown repository type' % path)
+
+class converter(object):
+    def __init__(self, ui, source, dest, revmapfile, opts):
+
+        self.source = source
+        self.dest = dest
+        self.ui = ui
+        self.opts = opts
+        self.commitcache = {}
+        self.authors = {}
+        self.authorfile = None
+
+        self.map = mapfile(ui, revmapfile)
+
+        # Read first the dst author map if any
+        authorfile = self.dest.authorfile()
+        if authorfile and os.path.exists(authorfile):
+            self.readauthormap(authorfile)
+        # Extend/Override with new author map if necessary
+        if opts.get('authors'):
+            self.readauthormap(opts.get('authors'))
+            self.authorfile = self.dest.authorfile()
+
+    def walktree(self, heads):
+        '''Return a mapping that identifies the uncommitted parents of every
+        uncommitted changeset.'''
+        visit = heads
+        known = {}
+        parents = {}
+        while visit:
+            n = visit.pop(0)
+            if n in known or n in self.map: continue
+            known[n] = 1
+            commit = self.cachecommit(n)
+            parents[n] = []
+            for p in commit.parents:
+                parents[n].append(p)
+                visit.append(p)
+
+        return parents
+
+    def toposort(self, parents):
+        '''Return an ordering such that every uncommitted changeset is
+        preceeded by all its uncommitted ancestors.'''
+        visit = parents.keys()
+        seen = {}
+        children = {}
+
+        while visit:
+            n = visit.pop(0)
+            if n in seen: continue
+            seen[n] = 1
+            # Ensure that nodes without parents are present in the 'children'
+            # mapping.
+            children.setdefault(n, [])
+            for p in parents[n]:
+                if not p in self.map:
+                    visit.append(p)
+                children.setdefault(p, []).append(n)
+
+        s = []
+        removed = {}
+        visit = children.keys()
+        while visit:
+            n = visit.pop(0)
+            if n in removed: continue
+            dep = 0
+            if n in parents:
+                for p in parents[n]:
+                    if p in self.map: continue
+                    if p not in removed:
+                        # we're still dependent
+                        visit.append(n)
+                        dep = 1
+                        break
+
+            if not dep:
+                # all n's parents are in the list
+                removed[n] = 1
+                if n not in self.map:
+                    s.append(n)
+                if n in children:
+                    for c in children[n]:
+                        visit.insert(0, c)
+
+        if self.opts.get('datesort'):
+            depth = {}
+            for n in s:
+                depth[n] = 0
+                pl = [p for p in self.commitcache[n].parents
+                      if p not in self.map]
+                if pl:
+                    depth[n] = max([depth[p] for p in pl]) + 1
+
+            s = [(depth[n], self.commitcache[n].date, n) for n in s]
+            s.sort()
+            s = [e[2] for e in s]
+
+        return s
+
+    def writeauthormap(self):
+        authorfile = self.authorfile
+        if authorfile:
+           self.ui.status('Writing author map file %s\n' % authorfile)
+           ofile = open(authorfile, 'w+')
+           for author in self.authors:
+               ofile.write("%s=%s\n" % (author, self.authors[author]))
+           ofile.close()
+
+    def readauthormap(self, authorfile):
+        afile = open(authorfile, 'r')
+        for line in afile:
+            try:
+                srcauthor = line.split('=')[0].strip()
+                dstauthor = line.split('=')[1].strip()
+                if srcauthor in self.authors and dstauthor != self.authors[srcauthor]:
+                    self.ui.status(
+                        'Overriding mapping for author %s, was %s, will be %s\n'
+                        % (srcauthor, self.authors[srcauthor], dstauthor))
+                else:
+                    self.ui.debug('Mapping author %s to %s\n'
+                                  % (srcauthor, dstauthor))
+                    self.authors[srcauthor] = dstauthor
+            except IndexError:
+                self.ui.warn(
+                    'Ignoring bad line in author file map %s: %s\n'
+                    % (authorfile, line))
+        afile.close()
+
+    def cachecommit(self, rev):
+        commit = self.source.getcommit(rev)
+        commit.author = self.authors.get(commit.author, commit.author)
+        self.commitcache[rev] = commit
+        return commit
+
+    def copy(self, rev):
+        commit = self.commitcache[rev]
+        do_copies = hasattr(self.dest, 'copyfile')
+        filenames = []
+
+        changes = self.source.getchanges(rev)
+        if isinstance(changes, basestring):
+            if changes == SKIPREV:
+                dest = SKIPREV
+            else:
+                dest = self.map[changes]
+            self.map[rev] = dest
+            return
+        files, copies = changes
+        parents = [self.map[r] for r in commit.parents]
+        if commit.parents:
+            prev = commit.parents[0]
+            if prev not in self.commitcache:
+                self.cachecommit(prev)
+            pbranch = self.commitcache[prev].branch
+        else:
+            pbranch = None
+        self.dest.setbranch(commit.branch, pbranch, parents)
+        for f, v in files:
+            filenames.append(f)
+            try:
+                data = self.source.getfile(f, v)
+            except IOError, inst:
+                self.dest.delfile(f)
+            else:
+                e = self.source.getmode(f, v)
+                self.dest.putfile(f, e, data)
+                if do_copies:
+                    if f in copies:
+                        copyf = copies[f]
+                        # Merely marks that a copy happened.
+                        self.dest.copyfile(copyf, f)
+
+        newnode = self.dest.putcommit(filenames, parents, commit)
+        self.source.converted(rev, newnode)
+        self.map[rev] = newnode
+
+    def convert(self):
+        try:
+            self.source.before()
+            self.dest.before()
+            self.source.setrevmap(self.map)
+            self.ui.status("scanning source...\n")
+            heads = self.source.getheads()
+            parents = self.walktree(heads)
+            self.ui.status("sorting...\n")
+            t = self.toposort(parents)
+            num = len(t)
+            c = None
+
+            self.ui.status("converting...\n")
+            for c in t:
+                num -= 1
+                desc = self.commitcache[c].desc
+                if "\n" in desc:
+                    desc = desc.splitlines()[0]
+                self.ui.status("%d %s\n" % (num, desc))
+                self.copy(c)
+
+            tags = self.source.gettags()
+            ctags = {}
+            for k in tags:
+                v = tags[k]
+                if self.map.get(v, SKIPREV) != SKIPREV:
+                    ctags[k] = self.map[v]
+
+            if c and ctags:
+                nrev = self.dest.puttags(ctags)
+                # write another hash correspondence to override the previous
+                # one so we don't end up with extra tag heads
+                if nrev:
+                    self.map[c] = nrev
+
+            self.writeauthormap()
+        finally:
+            self.cleanup()
+
+    def cleanup(self):
+        try:
+            self.dest.after()
+        finally:
+            self.source.after()
+        self.map.close()
+
+def convert(ui, src, dest=None, revmapfile=None, **opts):
+    util._encoding = 'UTF-8'
+
+    if not dest:
+        dest = hg.defaultdest(src) + "-hg"
+        ui.status("assuming destination %s\n" % dest)
+
+    destc = convertsink(ui, dest, opts.get('dest_type'))
+
+    try:
+        srcc = convertsource(ui, src, opts.get('source_type'),
+                             opts.get('rev'))
+    except Exception:
+        for path in destc.created:
+            shutil.rmtree(path, True)
+        raise
+
+    fmap = opts.get('filemap')
+    if fmap:
+        srcc = filemap.filemap_source(ui, srcc, fmap)
+        destc.setfilemapmode(True)
+
+    if not revmapfile:
+        try:
+            revmapfile = destc.revmapfile()
+        except:
+            revmapfile = os.path.join(destc, "map")
+
+    c = converter(ui, srcc, destc, revmapfile, opts)
+    c.convert()
+