SF.net SVN: fclient: [306] trunk/sandbox/fcp2/uri.py

[<ju...@us...>]

Revision: 306
          http://fclient.svn.sourceforge.net/fclient/?rev=306&view=rev
Author:   jurner
Date:     2008-03-04 09:37:20 -0800 (Tue, 04 Mar 2008)

Log Message:
-----------
no longer needed, use key.py instead

Removed Paths:
-------------
    trunk/sandbox/fcp2/uri.py

Deleted: trunk/sandbox/fcp2/uri.py
===================================================================
--- trunk/sandbox/fcp2/uri.py	2008-03-04 17:36:51 UTC (rev 305)
+++ trunk/sandbox/fcp2/uri.py	2008-03-04 17:37:20 UTC (rev 306)
@@ -1,131 +0,0 @@
-"""Freennet Client Protocol uri and related methods"""
-
-import os, sys
-import base64
-import re
-import urlparse
-
-#--> rel import hack
-class _RelImportHack(object):
-	def __init__(self, n):
-		fpath = os.path.abspath(__file__)
-		for i in xrange(n): fpath = os.path.dirname(fpath)
-		sys.path.insert(0, fpath)
-	def __del__(self): sys.path.pop(0)
-hack = _RelImportHack(2)
-
-from fcp2 import consts
-
-
-del hack
-#<-- rel import hack
-
-#**************************************************************************************
-# freenet base64 for keys
-#**************************************************************************************
-def base64UrlsaveDecode(string):
-	"""Decodes a base64 urlsave encoded string as encoded by freenet
-	@param string: string to decode
-	@return: decoded string
-	
-	@raise TypeError: if the string can not be decoded 
-	@note: this function handles non-standard encoding as used by freenet (see: freenet/src/support/base64.java)
-	"""
-	# freenet uses - for + and ~ for /
-	altchars = '-~'
-	
-	# padding may be ommitted or not
-	padding = 4 - len(string) % 4
-	if padding:
-		string += '=' * padding
-	return base64.b64decode(string, altchars)
-
-#****************************************************************************************
-# freenet keys
-#
-# KeyType@32 bytes hash, 32 bytes encryption key, 5 bytes extra
-#
-# all byte components are base64 encoded. Freenet uses base64 without padding
-# along with the following altchars for urlsave encode: - for + and ~ for /      
-# see: freenet/support/base64.java
-#
-# so a key as the user gets it to see is:
-# KeyType@43 bytes, 43 bytes, 7 bytes  ..of [A-Za-z0-9\-~]
-#
-# see: [freenet/src/support/base64.java]
-#
-#***************************************************************************************
-KeyPat = re.compile(
-r'''
-^(CHK@ | SSK@ | SVK@ | USK@)
-(
-    [a-z0-9\-~]{43},
-    [a-z0-9\-~]{43},
-    [a-z0-9\-~]{7}
-)
-''', re.I | re.X)		#TODO: ignorecase?
-
-
-def keyType(uri):
-	"""Returns the ky type of a freenet key or None if the type could not be determined"""
-	if uri.startswith(consts.KeyType.KSK):
-		return consts.KeyType.KSK
-	result = KeyPat.match(uri)
-	if result is None:
-		return None
-	return result.group(1)
-
-#*********************************************************************
-#
-#*********************************************************************
-def stripUri(uri):
-	"""Strips scheme and location parts from an uri"""
-	result = urlparse.urlsplit(uri)[2]
-	result = result.lstrip('/')
-	return result
-
-
-class Uri(object):
-	"""Class wrappinf a freenet Uri
-	
-	@ivar keyType: L{consts.KeyType} of the uri
-	@ivar uri: (str) uri contained in the instance
-	"""	
-	
-	KeyType = consts.KeyType
-			
-	
-	def __init__(self, uri):
-		"""
-		@param uri: (str) freenet uri (may be an uri  like http://..CHK@ or 
-		freenet:CHK@ or whatever or a a freenet key)
-		"""
-		self.uri = stripUri(uri)
-		result = keyType(self.uri)
-		self.keyType = self.KeyType.Invalid if result is None else result
-				
-		
-	def __nonzero__(self):
-		"""Checks if the uri contained in the instance is a vaild freenet uri"""
-		return self.keyType != self.KeyType.Invalid
-		
-		
-	def split(self):
-		"""Splits the uri
-		@return: tuple(freenet-key, file-name)
-		"""
-		if self.keyType != self.KeyType.Invalid:
-			head, sep, tail = self.uri.partition('/')
-			return head, tail
-		return self.uri, ''
-		
-	
-	def fileName(self):
-		"""Returns the filename part of the uri
-		@return: str
-		"""
-		head, tail = self.split()
-		if tail:
-			return tail
-		return ''
-


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