Second step in Mercurial support merge.

irkerhook.py

@@ -294,7 +294,7 @@ class HgExtractor(GenericExtractor):
 
         if arguments and type(arguments[0]) == type(()):
             # Called from hg_hook function
-            ui, repo, self.node = arguments[0]
+            ui, repo, node = arguments[0]
 
         # Extract global values from the hg configuration file(s)
         self.project = ui.config('irker', 'project')
@@ -354,15 +354,20 @@ if __name__ == "__main__":
     # Determine the repository type. Default to git unless user has pointed
     # us at a repo with identifiable internals.
     vcs = "git"
-    if repository and os.path.exists(os.path.join(repository, "format")):
+    if repository and os.path.exists(os.path.join(repository, ".hg")):
+        vcs = "hg"
+    elif repository and os.path.exists(os.path.join(repository, "format")):
         vcs = "svn"
 
     # Someday we'll have extractors for several version-control systems
     if vcs == "svn":
-        if repository is None or not commits:
-            sys.stderr.write("irkerhook: svn requires a repository and a commit.")
-            sys.exit(1)
         extractor = SvnExtractor(sys.argv[1:])
+        if not commits:
+            commits = ['HEAD']
+    elif vcs == "hg":
+        extractor = HgExtractor(sys.argv[1:])
+        if not commits:
+            commits = ['-1']
     else:
         extractor = GitExtractor(sys.argv[1:])
         if not commits:

irkerhook.xml

@@ -217,8 +217,8 @@ may have the following values:</para>
 <refsect2 id="svn"><title>Subversion</title>
 
 <para>Under Subversion, <application>irkerhook.py</application>
-requires two arguments: "repository=" (the absolute pathname of the
-Subversion repository) and "commit=" (the numeric revision level of
+requires a --repository option with value (the absolute pathname of the
+Subversion repository) and a commit argument (the numeric revision level of
 the commit).  The values must be the two arguments that Subversion
 gives its post-commit hook. Thus, a typical invocation in the post-commit
 script will look like this:</para>
@@ -263,7 +263,14 @@ this will be fixed in the next release.</para>
 
 <para>Under Mercurial, <application>irkerhook.py</application> can be
 invoked in two ways: either as a Python hook (preferred) or as a
-script.  As for git, in both cases all variables may be set in the repo
+script.</para>
+
+<para>When called as a script, the hook requires a --repository option
+with value (the absolute pathname of the Subversion repository) and can take a
+commit argument (the Mercurial hash ID of the commit or a reference to it). 
+The default commit argument is '-1', designating the current tip commit.</para>
+
+<para>As for git, in both cases all variables may be set in the repo
 <filename>hgrc</filename> file in an [irker] section.  Command-line
 variable=value arguments are accepted but not required for script
 invocation.  No attempt is made to interpret an