rewrite-log

git -> hg conversion script

contrib/convert-repo changes:
- do not print verbose output so that error messages are seen more easily
- Output the date as integer and not as floating point number.
- Do not require a ".git" subdirectory to work on, but use the GIT_DIR
  environment var to specify the git repository.

Change is otherwise compatible to the current version and I have tested it
by converting the kernel and several git respositories from kernel.org.
(Btw, the udev test dir contains a /sys dir with entries which should not
be normal dirs and not be normal files. ;-)

Thanks again for mercurial,

Florian La Roche



--- a/contrib/convert-repo
+++ b/contrib/convert-repo
@@ -28,26 +28,18 @@
         self.path = path

     def getheads(self):
-        h = file(self.path + "/.git/HEAD").read()[:-1]
-        return [h]
+        return [file(self.path + "/HEAD").read()[:-1]]

     def catfile(self, rev, type):
         if rev == "0" * 40: raise IOError()
-        path = os.getcwd()
-        os.chdir(self.path)
-        fh = os.popen("git-cat-file %s %s 2>/dev/null" % (type, rev))
-        os.chdir(path)
+        fh = os.popen("GIT_DIR=%s git-cat-file %s %s 2>/dev/null" % (self.path, type, rev))
         return fh.read()

     def getfile(self, name, rev):
         return self.catfile(rev, "blob")

     def getchanges(self, version):
-        path = os.getcwd()
-        os.chdir(self.path)
-        fh = os.popen("git-diff-tree --root -m -r %s" % (version))
-        os.chdir(path)
-
+        fh = os.popen("GIT_DIR=%s git-diff-tree --root -m -r %s" % (self.path, version))
         changes = []
         for l in fh:
             if "\t" not in l: continue
@@ -83,9 +75,9 @@

     def gettags(self):
         tags = {}
-        for f in os.listdir(self.path + "/.git/refs/tags"):
+        for f in os.listdir(self.path + "/refs/tags"):
             try:
-                h = file(self.path + "/.git/refs/tags/" + f).read().strip()
+                h = file(self.path + "/refs/tags/" + f).read().strip()
                 tags[f] = h
             except:
                 pass
@@ -99,8 +91,7 @@

     def getheads(self):
         h = self.repo.changelog.heads()
-        h = [ hg.hex(x) for x in h ]
-        return h
+        return [ hg.hex(x) for x in h ]

     def putfile(self, f, e, data):
         self.repo.wfile(f, "w").write(data)
@@ -155,12 +146,12 @@
         newlines.sort()

         if newlines != oldlines:
-            print "updating tags"
+            #print "updating tags"
             f = self.repo.wfile(".hgtags", "w")
             f.write("".join(newlines))
             f.close()
             if not oldlines: self.repo.add([".hgtags"])
-            date = "%s 0" % time.mktime(time.gmtime())
+            date = "%s 0" % int(time.mktime(time.gmtime()))
             self.repo.rawcommit([".hgtags"], "update tags", "convert-repo",
                                 date, self.repo.changelog.tip(), hg.nullid)

@@ -262,7 +253,7 @@
             num -= 1
             if c in self.map: continue
             desc = self.commitcache[c][3].splitlines()[0]
-            print num, desc
+            #print num, desc
             self.copy(c)

         tags = self.source.gettags()
@@ -275,6 +266,8 @@
         self.dest.puttags(ctags)

 gitpath, hgpath, mapfile = sys.argv[1:]
+if os.path.isdir(gitpath + "/.git"):
+    gitpath += "/.git"

 c = convert(convert_git(gitpath), convert_mercurial(hgpath), mapfile)
 c.convert()
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#!/usr/bin/env python
import sys, os
from mercurial import hg

f = sys.argv[1]

r1 = hg.revlog(open, f + ".i", f + ".d")
r2 = hg.revlog(open, f + ".i2", f + ".d2")

tr = hg.transaction(open, "journal")

for i in xrange(r1.count()):
    n = r1.node(i)
    p1, p2 = r1.parents(n)
    l = r1.linkrev(n)
    t = r1.revision(n)
    n2 = r2.addrevision(t, tr, l, p1, p2)
tr.close()

os.rename(f + ".i", f + ".i.old")
os.rename(f + ".d", f + ".d.old")
os.rename(f + ".i2", f + ".i")
os.rename(f + ".d2", f + ".d")