[PATCH 3/4] git-p4import: resume on correct p4 changeset

[Scott Lamb <slamb@slamb.org>]

This had been resuming on change 222 rather than 22283.

top_change's removal of the last two characters must have predated the use
of rstrip() in get_single(). A regexp should be less fragile, or at least
more obvious when it breaks.

Signed-off-by: Scott Lamb <slamb@slamb.org>
---
 git-p4import.py |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/git-p4import.py b/git-p4import.py
index 54e5e9e..e7a52b3 100644
--- a/git-p4import.py
+++ b/git-p4import.py
@@ -237,15 +237,16 @@ class git_command:
     def make_tag(self, name, head):
         self.git(["tag", "-f", name, head])
 
+    _tag_re = re.compile(r'tags/p4/(\d+)')
     def top_change(self, branch):
         try:
             a=self.get_single(["name-rev", "--tags", "refs/heads/%s" % branch])
-            loc = a.find(' tags/') + 6
-            if a[loc:loc+3] != "p4/":
-                raise
-            return int(a[loc+3:][:-2])
-        except:
-            return 0
+        except GitException, e:
+            return 0 # fresh repository
+        m = self._tag_re.search(a)
+        if m is None:
+            raise Exception('unable to parse: %r' % (a,))
+        return int(m.group(1))
 
     def update_index(self):
         files = self.git("ls-files -m -d -o -z".split(" "))
-- 
1.5.2