# HG changeset patch
# User Edouard Gomez <ed.gomez@free.fr>
# Date 1231033008 -3600
# Node ID 7971650bdc737c489e9a7b71370345a828171c83
# Parent  bd96fcb696d85702d817dd7909ad50d95be29732
convert/gnuarch: fix cat-log parsing

cat-log parsing was very wrong. It assumed the Summary header
was comming last, which is wrong. Plus the code was buggy because
it was concatenating all headers in the summary.

As parsing GNU Arch isn't trivial, and python email code does it
so well... just use that ;-)

diff -r bd96fcb696d8 -r 7971650bdc73 hgext/convert/gnuarch.py
--- a/hgext/convert/gnuarch.py	Sun Jan 04 02:36:48 2009 +0100
+++ b/hgext/convert/gnuarch.py	Sun Jan 04 02:36:48 2009 +0100
@@ -4,6 +4,7 @@
 from mercurial.i18n import _
 from mercurial import util
 import os, shutil, tempfile, stat
+from email.Parser import Parser
 
 class gnuarch_source(converter_source, commandline):
 
@@ -46,6 +47,7 @@
         self.parents = {}
         self.tags = {}
         self.modecache = {}
+        self.catlogparser = Parser()
 
     def before(self):
         if self.execmd == 'tla':
@@ -70,7 +72,7 @@
             self.changes[rev] = self.gnuarch_rev(rev)
 
             # Read author, date and summary
-            catlog = self.runlines0('cat-log', '-d', self.path, rev)
+            catlog = self.run0('cat-log', '-d', self.path, rev)
             self._parsecatlog(catlog, rev)
 
             self.parents[rev] = child
@@ -229,20 +231,15 @@
         return path
 
     def _parsecatlog(self, data, rev):
-        summary = []
-        for l in data:
-            l = l.strip()
-            if summary:
-                summary.append(l)
-            elif l.startswith('Summary:'):
-                summary.append(l[len('Summary: '):])
-            elif l.startswith('Standard-date:'):
-                date = l[len('Standard-date: '):]
-                strdate = util.strdate(date, '%Y-%m-%d %H:%M:%S')
-                self.changes[rev].date = util.datestr(strdate)
-            elif l.startswith('Creator:'):
-                self.changes[rev].author = l[len('Creator: '):]
-        self.changes[rev].summary = '\n'.join(summary)
+        try:
+            catlog = self.catlogparser.parsestr(data)
+            self.changes[rev].date = util.datestr(
+                util.strdate(catlog['Standard-date'],
+                             '%Y-%m-%d %H:%M:%S'))
+            self.changes[rev].author = catlog['Creator']
+            self.changes[rev].summary = catlog['Summary']
+	except Exception, err:
+            raise util.Abort(_('could not parse cat-log of %s') % rev)
 
     def _parsechangeset(self, data, rev):
         for l in data: