Listing 1. cgimodel.py
#!/usr/bin/env python
# $Id: cgimodel.py,v 1.3 1998/09/25 13:45:29
# chenna Exp chenna $
# $Author: chenna $
# $Version$
# $Date: 1998/09/25 13:45:29 $
# (C) Chenna Ramu, EMBL.
# chenna@embl-heidelberg.de
# History
# Fixed the bug, when more than one value has the
# same key, the values should be a list for that
# key in the dict!
import sys
from cgidisp import *
mime_html = "Content-type: text/html\n\n"
pre = "<PRE>"
_pre = "</PRE>"
# A dictionary with default values for
# non-existing entries
import UserDict, copy
class DictWithDefault(UserDict.UserDict):
def __init__(self, default):
self.data = {}
self.default = default
def __getitem__(self, key):
try:
item = self.data[key]
except KeyError:
item = copy.copy(self.default)
self.data[key] = item
return item
def __delitem__(self, key):
try:
del self.data[key]
except KeyError:
pass
def CollectArgs(parDict=None):
if not parDict:
parDict = DictWithDefault(None) # make anew
if( len(sys.argv) > 1 ):
cmdLine = sys.argv
i = 1
try:
while i < len(cmdLine):
key = cmdLine[i]
val = cmdLine[i+1]
if key[0] == '-':
key = key[1:]
if parDict.has_key(key): # make list
if type(parDict[key]) == type([]):
parDict[key].append(val)
else:
parDict[key] = []
tmp = parDict[key]
parDict[key].append(tmp)
parDict[key].append(val)
else:
parDict[key] = val
i = i + 2
parDict['isCmdLine'] = 1
except IndexError:
pass
else:
import cgi
form = cgi.FieldStorage()
parDict['isHtml'] = 1
for j in form.list:
if j.name[0] == '-': # take care of
# '-' in cgi
j.name = j.name[1:]
parDict[j.name]=j.value
parDict['isCmdLine'] = None
import os
parDict['_environ'] = {} # do not mix the
# environs with main dictionary
for k,v in os.environ.items():
parDict['_environ'][k] = v
return parDict
def TraceIt(parDict):
import traceback
sys.stderr = sys.stdout
if not parDict.has_key('isCmdLine'):
print parDict['isCmdLine']
print mime_html
print pre
print " <B> Tracing ... </B>"
traceback.print_exc()
if not parDict.has_key('isCmdLine'):
print _pre
return
##################################################
# main
#
def main():
parDict = DictWithDefault(None)
d = Dispatcher()
parDict = CollectArgs(parDict)
mime = parDict['mime']
if not mime:
print mime_html # print default mime
if mime == 'simple':
pass
fun = parDict['fun']
if not fun:
print "usage : cgimodel -fun functionName"
d.ShowAvailableFunc()
TraceIt(parDict)
else:
try:
d.dispatch(fun,parDict)
except:
TraceIt(parDict)
if __name__ == '__main__' :
main()
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