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# GopherObject.py
# $Id: GopherObject.py,v 1.17 2001/07/09 22:31:32 s2mdalle Exp $
# Written by David Allen <mda@idatar.com>
# Released under the terms of the GNU General Public License
#
# Base class for GopherResource, GopherResponse
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#############################################################################
import re
import os
import utils
from string import *
from gopher import *
GopherObjectException = "Whoops...something went wrong!"
class GopherObject:
def __init__(self,
typecode = None,
host = None,
port = None,
locator = None,
name = None,
len = -2):
self.__class = "GopherObject"
self._shouldCache = "YES"
self.setTypeCode(typecode)
self.setHost(host)
self.setPort(port)
self.setLocator(locator)
self.setName(name)
self.setLen(len)
self.setDataBlock("")
return None
def dup(self, res):
"""Returns a copy of this object."""
self.setLen(res.getLen())
self.setTypeCode(res.getTypeCode())
self.setHost(res.getHost())
self.setLocator(res.getLocator())
self.setName(res.getName())
self.setPort(res.getPort())
return self
# Accessors, mutators
def shouldCache(self):
return self._shouldCache
def setShouldCache(self, boolval):
self._shouldCache = boolval
return self.getShouldCache()
def getShouldCache(self):
return self._shouldCache
def getLen(self):
return self.len
def setLen(self, newlen):
self.len = newlen
return self.len
def getTypeCode(self):
return self.type[0]
def setDataBlock(self, block):
self.datablock = block
return self.datablock
def getDataBlock(self):
return self.datablock
def setType(self, newtype):
return self.setTypeCode(newtype)
def setTypeCode(self, newtype):
self.type = newtype
return self.type
def getType(self):
"""Return a string representing the type code of the response. See
the gopher module for more information."""
try:
return responses[self.type]
except KeyError:
return "-Unknown-"
def getHost(self):
return self.host
def setHost(self, newhost):
self.host = newhost
return self.host
def getPort(self):
return self.port
def setPort(self, newport):
self.port = newport
return self.port
def getLocator(self):
return self.locator
def setLocator(self, newlocator):
self.locator = newlocator
return self.locator
def getName(self):
if strip(self.name) == '/':
self.setName("%s root" % self.getHost())
elif self.name == '' or self.name is None:
loc = strip(self.getLocator())
if loc == '' or loc == '/':
self.setName("%s root" % self.getHost())
else:
self.setName(" ")
# self.setName("%s %s" % (self.getHost(), self.getLocator()))
return self.name
def setName(self, newname):
self.name = newname
return self.name
# Methods
def toURL(self):
"""Return the URL form of this GopherResource"""
return "gopher://%s:%s/%s%s" % (self.getHost(),
self.getPort(),
self.getTypeCode(),
re.sub("\t", "%9;", self.getLocator()))
def toProtocolString(self):
"""Returns the protocol string, i.e. how it would have been served
by the server, in a string."""
return "%s%s\t%s\t%s\t%s\r\n" % (self.getTypeCode(),
self.getName(),
self.getLocator(),
self.getHost(),
self.getPort())
def toXML(self):
"""Returns a small XML tree corresponding to this object. The root
element is the name of the object. Override me in subclasses."""
tags = [["type", self.type],
["locator", self.locator],
["host", self.host],
["port", self.port],
["name", self.name]]
str = "<GopherObject>"
for tag in tags:
str = str + "<%s>%s</%s>" % (tag[0], tag[1], tag[0])
str = str + "</GopherObject>"
return str
def __str__(self):
return self.__class
# return self.toString()
def toString(self):
"""Returns a string form of this object. Mostly only good for
debugging."""
return ("Type: %s\nLocator: %s\nHost: %s\nPort: %s\nName: %s\n" %
(self.getTypeCode(), self.getLocator(),
self.getHost(), self.getPort(), self.getName()))
def filenameToURL(self, filename):
"""Unencodes filenames returned by toFilename() into URLs"""
try:
return utils.character_replace(filename, os.sep, "/")
except:
# os.sep is '/' - character_replace doesn't allow replacing a
# character with itself. we're running Eunuchs.
return filename
def toCacheFilename(self):
filename = self.toFilename()
lastchr = filename[len(filename)-1]
if lastchr == os.sep or lastchr == '/':
# Pray for no name clashes... :)
# We have to call it something inside the leaf directory, because
# if you don't, you get into the problem of caching responses from
# directories as files, and not having a directory to put the items
# in the directory in. And you can't call the file "" on any
# filesystem. :)
filename = "%sgopherdir.idx" % filename
elif self.getTypeCode() == RESPONSE_DIR:
filename = "%s%sgopherdir.idx" % (filename, os.sep)
port = self.getPort()
str_to_find = ":%d" % int(port)
# Cut out the port portion of the filename. This is because some
# OS's throw up with ':' in filenames. Bummer, but this will make it
# hard to translate a filename/path -> URL
ind = find(filename, str_to_find)
if ind != -1:
filename = "%s%s" % (filename[0:ind],
filename[ind+len(str_to_find):])
if os.sep == '\\': # No-name mac wannabe OS's... :)
for char in ['/', ':', ';', '%', '*', '|']:
# This isn't necessarily a good idea, but it's somewhat
# necessary for windows boxen.
filename = utils.character_replace(filename, char, ' ')
return filename
def toFilename(self):
"""Returns the name of a unique file containing the elements of this
object. This file is not guaranteed to not exist, but it probably
doesn't. :) Get rid of all of the slashes, since they are
Frowned Upon (TM) by most filesystems."""
replaceables = ['\t', '\n', '\\', '/']
data = self.toURL()
if find(lstrip(lower(data)), "gopher://") == 0:
# Chomp the "gopher://" part
data = data[len("gopher://"):]
for r in replaceables:
try:
data = utils.character_replace(data, r, os.sep)
except:
pass
return data
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