#!/usr/bin/python
import re
from lxml import etree
import os,sys
from optparse import OptionParser
options=None
args=None
usage="remove_from_link -l [link report filename] -m [match to remove] -o [outfile]"
parser=OptionParser(usage=usage)
parser.add_option("-l","--linkreport",dest="linkreport",help="the link report")
parser.add_option("-m","--match",dest="match",help="the match to remove")
parser.add_option("-o","--outfile",dest="outfile",help="the file to write the new linkreport in")
(options,args)=parser.parse_args()

if not options.linkreport:
	print "Error: link report not present."
	sys.exit()

if not options.match:
	print "Error: the match to search for is not present."
	sys.exit()

if not options.outfile:
	print "Error: the outfile is not present."
	sys.exit()

#read the link report and setup etree stuff
content=open(options.linkreport,"r").read()
linkroot=etree.fromstring(content)
linkscripts=linkroot[0]
extdefs=linkroot[1]

#create new xml file
report=etree.Element("report")
scripts=etree.SubElement(report,"scripts")
externals=etree.SubElement(report,"external-defs")

#parse scripts
for script in linkscripts:
	name=script.get("name")
	if(re.match(options.match,name)):continue
	scripts.append(script)

#add extdefs
for edef in extdefs:
	externals.append(edef)

#write
open(options.outfile,"w").write(etree.tostring(report,pretty_print=True))