Write with filter and some other things

code/filters_embed.py

@@ -0,0 +1,55 @@
+'''
+Created on 05.09.2013
+
+@author: scond_000
+'''
+import tempfile
+import os
+
+old = open('png.py')
+temp = tempfile.TemporaryFile('w+')
+
+temp.writelines(old)
+temp.seek(0)
+old.close()
+os.remove('png.py')
+new = open('png.py', 'w')
+
+go = True
+#All before embdeded filters
+for line in temp:
+    if go:
+        new.write(line)
+    if line.strip().startswith('#===Super-safe pngfilters'):
+        go = False
+    if line.strip().startswith('#/===Super-safe pngfilters'):
+        break
+
+#Embeding filters
+new.write('    class pngfilters:' + '\n')
+filt = open('pngfilters.py')
+pre_blank = False
+for line in filt:
+    if line.startswith('def'):
+        new.write('        @staticmethod' + '\n')
+    else:
+        #Here go replacements when functions in pngfilters
+        #reference to functions in pngfilters
+        #As the will be availible in png.py only as methods
+        line = line.replace('_paeth', 'pngfilters._paeth')
+    if line.strip() == '':
+        # Better PEP-8 (1 blank line between methods,
+        # no spaces betweeen in blank lines)
+        if not pre_blank:
+            new.write('\n')
+        pre_blank = True
+    else:
+        pre_blank = False
+        new.write('        ')
+        new.write(line)
+
+# Rest of png.py
+new.write('    #/===Super-safe pngfilters' + '\n')
+new.writelines(temp)
+temp.close()
+new.close()