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- ##############################################################################
- #
- # Zope Public License (ZPL) Version 1.0
- # -------------------------------------
- #
- # Copyright (c) Digital Creations. All rights reserved.
- #
- # This license has been certified as Open Source(tm).
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions are
- # met:
- #
- # 1. Redistributions in source code must retain the above copyright
- # notice, this list of conditions, and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions, and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. Digital Creations requests that attribution be given to Zope
- # in any manner possible. Zope includes a "Powered by Zope"
- # button that is installed by default. While it is not a license
- # violation to remove this button, it is requested that the
- # attribution remain. A significant investment has been put
- # into Zope, and this effort will continue if the Zope community
- # continues to grow. This is one way to assure that growth.
- #
- # 4. All advertising materials and documentation mentioning
- # features derived from or use of this software must display
- # the following acknowledgement:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # In the event that the product being advertised includes an
- # intact Zope distribution (with copyright and license included)
- # then this clause is waived.
- #
- # 5. Names associated with Zope or Digital Creations must not be used to
- # endorse or promote products derived from this software without
- # prior written permission from Digital Creations.
- #
- # 6. Modified redistributions of any form whatsoever must retain
- # the following acknowledgment:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # Intact (re-)distributions of any official Zope release do not
- # require an external acknowledgement.
- #
- # 7. Modifications are encouraged but must be packaged separately as
- # patches to official Zope releases. Distributions that do not
- # clearly separate the patches from the original work must be clearly
- # labeled as unofficial distributions. Modifications which do not
- # carry the name Zope may be packaged in any form, as long as they
- # conform to all of the clauses above.
- #
- #
- # Disclaimer
- #
- # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
- # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
- # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- #
- #
- # This software consists of contributions made by Digital Creations and
- # many individuals on behalf of Digital Creations. Specific
- # attributions are listed in the accompanying credits file.
- #
- ##############################################################################
- """Image object that is stored in a file"""
-
- __version__='$Revision: 1.9.36.2 $'[11:-2]
-
- from OFS.content_types import guess_content_type
- from Globals import package_home
- from Common import rfc1123_date
- from string import rfind, split
- from DateTime import DateTime
- from time import time
- from os import stat
- import Acquisition
- import string
-
-
- class ImageFile(Acquisition.Explicit):
- """Image objects stored in external files."""
-
- def __init__(self,path,_prefix=None):
- if _prefix is None: _prefix=SOFTWARE_HOME
- elif type(_prefix) is not type(''):
- _prefix=package_home(_prefix)
- path='%s/%s' % (_prefix, path)
- self.path=path
-
- file=open(path, 'rb')
- data=file.read()
- file.close()
- content_type, enc=guess_content_type(path, data)
- if content_type:
- self.content_type=content_type
- else:
- self.content_type='image/%s' % path[rfind(path,'.')+1:]
- self.__name__=path[rfind(path,'/')+1:]
- self.lmt=float(stat(path)[8]) or time()
- self.lmh=rfc1123_date(self.lmt)
-
-
- def index_html(self, REQUEST, RESPONSE):
- """Default document"""
- # HTTP If-Modified-Since header handling. This is duplicated
- # from OFS.Image.Image - it really should be consolidated
- # somewhere...
- header=REQUEST.get_header('If-Modified-Since', None)
- if header is not None:
- header=string.split(header, ';')[0]
- # Some proxies seem to send invalid date strings for this
- # header. If the date string is not valid, we ignore it
- # rather than raise an error to be generally consistent
- # with common servers such as Apache (which can usually
- # understand the screwy date string as a lucky side effect
- # of the way they parse it).
- try: mod_since=long(DateTime(header).timeTime())
- except: mod_since=None
- if mod_since is not None:
- if getattr(self, 'lmt', None):
- last_mod = long(self.lmt)
- else:
- last_mod = long(0)
- if last_mod > 0 and last_mod <= mod_since:
- RESPONSE.setStatus(304)
- return ''
-
- RESPONSE.setHeader('Content-Type', self.content_type)
- RESPONSE.setHeader('Last-Modified', self.lmh)
- f=open(self.path,'rb')
- data=f.read()
- f.close()
- return data
-
- HEAD__roles__=None
- def HEAD(self, REQUEST, RESPONSE):
- """ """
- RESPONSE.setHeader('Content-Type', self.content_type)
- RESPONSE.setHeader('Last-Modified', self.lmh)
- return ''
-
- def __len__(self):
- # This is bogus and needed because of the way Python tests truth.
- return 1
-
- def __str__(self):
- return '<IMG SRC="%s" ALT="%s">' % (self.__name__, self.title_or_id())
-
-