Make indentation slightly faster.

mdboom · mdboom · commit b8b7201f9298 · 2011-05-09T11:06:39.000-04:00
diff --git a/lib/matplotlib/backends/backend_svg.py b/lib/matplotlib/backends/backend_svg.py
@@ -93,6 +93,7 @@ def __init__(self, file):
         self.__open = 0 # true if start tag is open
         self.__tags = []
         self.__data = []
+        self.__indentation = u" " * 64
 
     def __flush(self, indent=True):
         # flush internal buffers
@@ -122,7 +123,7 @@ def start(self, tag, attrib={}, **extra):
         tag = escape_cdata(tag)
         self.__data = []
         self.__tags.append(tag)
-        self.__write(u" " * (len(self.__tags) - 1))
+        self.__write(self.__indentation[:len(self.__tags) - 1])
         self.__write(u"<%s" % tag)
         if attrib or extra:
             attrib = attrib.copy()
@@ -144,7 +145,7 @@ def start(self, tag, attrib={}, **extra):
 
     def comment(self, comment):
         self.__flush()
-        self.__write(u" " * (len(self.__tags)))
+        self.__write(self.__indentation[:len(self.__tags)])
         self.__write(u"<!-- %s -->\n" % escape_cdata(comment))
 
     ##
@@ -177,7 +178,7 @@ def end(self, tag=None, indent=True):
             self.__write(u"/>\n")
             return
         if indent:
-            self.__write(u" " * (len(self.__tags)))
+            self.__write(self.__indentation[:len(self.__tags)])
         self.__write(u"</%s>\n" % tag)
 
     ##
