move teplate renderer function to utils package, it can be reused by genspider command

--HG--
extra : convert_revision : svn%3Ab85faa78-f9eb-468e-a121-7cced6da292c%40383

scrapy/trunk/scrapy/bin/scrapy-admin.py

@@ -1,14 +1,12 @@
 #!/usr/bin/env python
 """Scrapy admin script is used to create new scrapy projects and similar
 tasks"""
-from __future__ import with_statement
-
 import os
 import shutil
-import string
 from optparse import OptionParser
 
 import scrapy
+from scrapy.utils.misc import render_templatefile
 
 usage = """
 scrapy-admin.py [options] [command]
@@ -23,16 +21,6 @@ TEMPLATES = (
         'scrapy_settings.py',
         )
 
-def render_templatefile(path, **kwargs):
-    with open(path, 'rb') as file:
-        raw = file.read()
-
-    content = string.Template(raw).substitute(**kwargs)
-
-    with open(path, 'wb') as file:
-        file.write(content)
-
-
 def main():
     parser = OptionParser(usage=usage)
     opts, args = parser.parse_args()

scrapy/trunk/scrapy/utils/misc.py

@@ -1,7 +1,10 @@
 """
 Auxiliary functions which doesn't fit anywhere else
 """
+from __future__ import with_statement
+
 import re
+import string
 import hashlib
 
 from twisted.internet import defer
@@ -113,3 +116,14 @@ def hash_values(*values):
         hash.update(value)
     return hash.hexdigest()
 
+
+def render_templatefile(path, **kwargs):
+    with open(path, 'rb') as file:
+        raw = file.read()
+
+    content = string.Template(raw).substitute(**kwargs)
+
+    with open(path, 'wb') as file:
+        file.write(content)
+
+