hg-info started, but not perfect yet

--HG--
branch : pmacs2

method/hg.py

@@ -6,7 +6,7 @@ from method import Method, Argument
 from method.vc import VcBlame
 
 try:
-    from mercurial import hg, ui
+    from mercurial import hg, ui, node
     from mercurial import commands as hgc
     has_hg = True
 except ImportError:
@@ -49,6 +49,23 @@ class HgLog(Method, HgBase):
         s = ''.join(ui_imp.popbuffer())
         w.application.data_buffer('*Log*', s, switch_to=True)
 
+class HgInfo(Method, HgBase):
+    """Get some basic info from Mercurial about the current buffer"""
+    def _execute(self, w, **vargs):
+        if not self._hg_check(w):
+            return
+        base = os.path.basename(w.buffer.path)
+        ui_imp, repo = self._hg_init()
+        path = w.buffer.path.replace(os.getcwd() + '/', '')
+        l = repo.file(path)
+        status = 'Unknown'
+        rev = l.linkrev(l.rev(l.tip()))
+        ctx = repo[rev]
+        changeid = node.hex(ctx.node()[:6])
+        user = ui_imp.shortuser(ctx.user())
+        msg = '%s  %s  %s:%s  [%s]' % (base, status, rev, changeid, user)
+        w.set_error(msg)
+
 class HgDiff(Method, HgBase):
     """Diff the current file with the version in Mercurial"""
     def _get_revs(self, w, **vargs):