+cwd = os.getcwd()
+def absolutify(path):
+ if path[0] != '/':
+ return os.path.join(cwd, path)
+ return path
+
+def unquoteurl(url):
+ buf = ""
+ i = 0
+ while i < len(url):
+ c = url[i]
+ i += 1
+ if c == '%':
+ if len(url) >= i + 2:
+ c = 0
+ if '0' <= url[i] <= '9':
+ c |= (ord(url[i]) - ord('0')) << 4
+ elif 'a' <= url[i] <= 'f':
+ c |= (ord(url[i]) - ord('a') + 10) << 4
+ elif 'A' <= url[i] <= 'F':
+ c |= (ord(url[i]) - ord('A') + 10) << 4
+ else:
+ raise ValueError("Illegal URL escape character")
+ if '0' <= url[i + 1] <= '9':
+ c |= ord(url[i + 1]) - ord('0')
+ elif 'a' <= url[i + 1] <= 'f':
+ c |= ord(url[i + 1]) - ord('a') + 10
+ elif 'A' <= url[i + 1] <= 'F':
+ c |= ord(url[i + 1]) - ord('A') + 10
+ else:
+ raise ValueError("Illegal URL escape character")
+ buf += chr(c)
+ i += 2
+ else:
+ raise ValueError("Incomplete URL escape character")
+ else:
+ buf += c
+ return buf