abstract class HgBase introduced; methods updated

--HG--
branch : pmacs2

method/hg.py

@@ -10,7 +10,23 @@ try:
 except ImportError:
     has_hg = False
 
-class HgBlame(VcBlame):
+class HgBase(object):
+    def _hg_check(self, w):
+        if not has_hg:
+            w.set_error("Mercurial is not installed")
+            return False
+        elif not hasattr(w.buffer, 'path'):
+            w.set_error("Buffer has no corresponding file")
+            return False
+        else:
+            return True
+    def _hg_init(self):
+        ui_imp = ui.ui(verbose=True)
+        ui_imp.pushbuffer()
+        repo = hg.repository(ui=ui_imp, path='.')
+        return ui_imp, repo
+
+class HgBlame(VcBlame, HgBase):
     """Show buffer annotated with hg metadata"""
     line_re = re.compile(r'^ *(?P<user>[^ ]+) (?P<rev>\d+) (?P<date>\d{4}-\d{2}-\d{2}): (?P<content>.*)\n$')
     prefix_fmt = '[b:d:*]%(rev)-5s [c:d:*]%(user)-10s [b:d:*]%(date)10s[d:d:*]'
@@ -19,23 +35,32 @@ class HgBlame(VcBlame):
         cmd = ("hg", 'blame', '-nudq', w.buffer.path)
         return Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
 
-class HgLog(Method):
+class HgBlame2(Method, HgBase):
+    def _execute(self, w, **vargs):
+        if not self._hg_check(w):
+            return
+        ui_imp, repo = self._hg_init()
+        hgc.identify(ui_imp, repo, w.buffer.path)
+        hgc.annotate(ui_imp, repo, w.buffer.path, user=None, date=None, rev=None)
+        s = ''.join(ui_imp.popbuffer())
+        w.application.data_buffer('*Blame*', s, switch_to=True)
+
+class HgLog(Method, HgBase):
     """Show hg log for this buffer"""
     def _execute(self, w, **vargs):
-        w.set_error("unimplemented")
+        if not self._hg_check(w):
+            return
+        ui_imp, repo = self._hg_init()
+        hgc.log(ui_imp, repo, user=None, rev=None, date=None)
+        s = ''.join(ui_imp.popbuffer())
+        w.application.data_buffer('*Log*', s, switch_to=True)
 
-class HgDiff(Method):
+class HgDiff(Method, HgBase):
     """Diff the current file with the version in Mercurial"""
     def _execute(self, w, **vargs):
-        if not has_hg:
+        if not self._hg_check(w):
-            w.set_error("Mercurial is not installed")
             return
-        elif not hasattr(w.buffer, 'path'):
+        ui_imp, repo = self._hg_init()
-            w.set_error("Buffer has no corresponding file")
-            return
-        ui_imp = ui.ui(verbose=True)
-        ui_imp.pushbuffer()
-        repo = hg.repository(ui=ui_imp, path='.')
         hgc.diff(ui_imp, repo, w.buffer.path)
         s = ''.join(ui_imp.popbuffer())
         w.application.data_buffer("*Diff*", s, switch_to=True, modename='diff')