# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2012-11-03 19:37:50
# Node ID 3326fd05eb1f5b5d870f7d9b85a276a07b2231db
# Parent  42f8ee0e04ac41e01cff3191dfad29cec7b92733

formatter: add condwrite method

This makes handling conditional output tidier

diff --git a/mercurial/formatter.py b/mercurial/formatter.py
--- a/mercurial/formatter.py
+++ b/mercurial/formatter.py
@@ -31,6 +31,10 @@ class baseformatter(object):
         '''do default text output while assigning data to item'''
         for k, v in zip(fields.split(), fielddata):
             self._item[k] = v
+    def condwrite(self, cond, fields, deftext, *fielddata, **opts):
+        '''do conditional write (primarily for plain formatter)'''
+        for k, v in zip(fields.split(), fielddata):
+            self._item[k] = v
     def plain(self, text, **opts):
         '''show raw text for non-templated mode'''
         pass
@@ -51,6 +55,10 @@ class plainformatter(baseformatter):
         pass
     def write(self, fields, deftext, *fielddata, **opts):
         self._ui.write(deftext % fielddata, **opts)
+    def condwrite(self, cond, fields, deftext, *fielddata, **opts):
+        '''do conditional write'''
+        if cond:
+            self._ui.write(deftext % fielddata, **opts)
     def plain(self, text, **opts):
         self._ui.write(text, **opts)
     def end(self):