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ifs_parse.py
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ifs_parse.py
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#!/usr/bin/python
from sys import argv
import re
import os
import sys
def ifsFileList(ifsfile):
command = "dumpifs " + ifsfile
return os.popen(command)
def parseIfsOutput(ifsinput):
flist=[]
llist=[]
findex = 0
for line in ifsinput:
if findex < 7:
findex+=1
continue
elif not re.match("Checksums:", line):
findex+=1
path = re.search(r"(\s*[a-zA-Z0-9\-]*\s*\w*\s*)(\w.*)", line).group(2)
if re.search(r"\-\>", path):
llist.append(path)
elif re.search(r"\w",path):
flist.append(path)
else:
sys.exit("Something went wrong. Regex error.")
return flist,llist
def mkDirs(path,root):
pathParts = path.split("/")
pathParts.insert(0,root)
pathString = '/'.join(pathParts[:-1])
if not os.path.exists(pathString):
os.makedirs(pathString)
return pathString,pathParts[len(pathParts)-1]
def dumpFile(ifsfile,path,filetoextract):
command = "dumpifs -xbd " + path + " " + ifsfile + " " + filetoextract
return os.system(command)
def parsePaths(flist,ifsfile="foo",root="ifs"):
for path in flist:
print root + "/" + path
pathList =mkDirs(path,root)
dumpFile(ifsfile,pathList[0],pathList[1])
def parseLinks(llists,handle):
linkcount = 0;
for line in llists:
pathPieces = line.split()
handle.write("ln -s " + pathPieces[2] + " " + pathPieces[0] + "\n")
linkcount+=1
print "Writing symlink list: " + handle.name
return linkcount
ROOT = 'ifs'
ifsfile = argv[1]
if ifsfile is None:
exit("No file to parse...")
linkfile = argv[2]
if linkfile is None:
linkfile = ROOT + "/links.txt"
f = open(linkfile, 'w')
flist,llist=parseIfsOutput(ifsFileList(ifsfile))
parsePaths(flist,ifsfile,ROOT)
parseLinks(llist,f)
f.close