#!/usr/bin/python


# by dexen Wed Apr  2 22:16:59 CEST 2008


import sys
import os
import re
from os import path

def tr( s ):
	print "trace:", s
	pass
	
	
def toFileHgStyle( s ):
	return s.split( ' ' )[5].strip()+'.diff'


matchDotDot = re.compile( "[.][.]" )

def toFile( s ):
	if matchDotDot.search( s ):
		raise exception( "DotDot in diff str, giving up: " + s )
	if True:
		return toFileHgStyle( s )
	return 'foo'


def handleDiffChunk( s ):
	#print s
	filePN = toFile( s[0] )
	tr( filePN )


matchDiff = re.compile( "diff " )

def processInput( input, chunks ):
	mLine = ''
	while True:
		if len( mLine ) == 0:
			l = input.readline()
		else:
			l = mLine
		if len( l ) == 0:
			return
	#		raise "Empty input"
		if matchDiff.match( l ):
			pass
		else:
			raise "failed to match diff: "+l
		currentC = []
		d = {'chunks':currentC}
		chunks.append( d )
		currentC.append( l )
		d['filePN'] = toFile( l )
		while True:
			l = input.readline()
			#tr( l )
			if len( l ) == 0:
				return
			if matchDiff.match( l ):
				mLine = l
				break
			currentC.append( l )



def createStuff( ch ):
	f = ch['filePN']
	tr( f )
	d = path.dirname( f )
	if not path.exists( d ):
		os.makedirs( path.dirname( f ) )
	content = ''.join( ch['chunks'] )
	fd = os.open( f, os.O_EXCL | os.O_CREAT | os.O_WRONLY )
	os.fdopen( fd, "w" ).write(content)
	


def main():
	print sys.argv
	chunks = []
	if len( sys.argv[1:] ):
		for i in sys.argv[1:]:
			print "Processing file ",i
			processInput( open( i ), chunks )
	#else:
		#processInput( sys.stdin )
	for i in chunks:
		createStuff( i )


main()