+
+
+def getContent(url='',stdin=False):
+ '''Generic content retriever, DO NOT use this function in a CGI script as
+ it can read from the local disk (which you probably don't want it to).
+ '''
+
+ # Special case, if this is a HTTP url, return the data from it using
+ # the HTTP functions which attempt to play a bit nicer.
+ parsedURL = urlparse.urlparse(url)
+ if 'http' in parsedURL[0]: return getHTTPContent(url)
+
+ if stdin:
+ content = sys.stdin.read()
+ return content
+
+ if not parsedURL[0]:
+ try: content = open(os.path.abspath(url),'r').read()
+ except (IOError, OSError), e:
+ sys.stderr.write('%s\n'%e)
+ sys.exit(1)
+ return content
+
+ # If we've survived, use python's generic URL opening library to handle it
+ import urllib2
+ try:
+ res = urllib2.urlopen(url)
+ content = res.read()
+ res.close()
+ except (urllib2.URLError, OSError), e:
+ sys.stderr.write('%s\n'%e)
+ sys.exit(1)
+ return content
+
+
+def getHTTPContent(url='',cache='.httplib2-cache'):
+ '''This function attempts to play nice when retrieving content from HTTP
+ services. It's what you should use in a CGI script. It will (by default)
+ slurp the first 20 bytes of the file and check that we are indeed looking
+ at an ICS file before going for broke.'''
+
+ try:
+ import httplib2
+ except ImportError:
+ import urllib2
+
+ if not url: return ''
+
+ if 'httplib2' in sys.modules:
+ try: h = httplib2.Http('.httplib2-cache')
+ except OSError: h = httplib2.Http()
+ else: h = False
+
+ try:
+ if h: content = h.request(url)[1]
+ return content
+ except ValueError, e:
+ sys.stderr.write('%s\n'%e)
+ sys.exit(1)
+
+ try:
+ content = urllib2.urlopen(url).read()
+ return content
+ except (urllib2.URLError, OSError), e:
+ sys.stderr.write('%s\n'%e)
+ sys.exit(1)
+
+ return ''
+
+if __name__ == '__main__':
+ from optparse import OptionParser
+ # If the user passed us a 'stdin' argument, we'll go with that,
+ # otherwise we'll try for a url opener
+
+ parser = OptionParser('usage: %prog [options] url')
+ parser.add_option('-s', '--stdin', action='store_true', dest='stdin',
+ default=False, help='Take a calendar from standard input')
+ parser.add_option('-o', '--output', dest='outfile', default='',
+ help='Specify output file (defaults to standard output)')
+
+ (options, args) = parser.parse_args()
+
+ if not args and not options.stdin:
+ parser.print_usage()
+ sys.exit(0)
+ elif not options.stdin:
+ url = args[0]
+ else:
+ url = ''
+
+ content = getContent(url, options.stdin)
+ cal = lineJoiner(content)
+ print cal