def searchreplace(req,path,search,replace,exts=None):
	
	import fileinput, glob, string, sys, os
	from os.path import join
	# replace a string in multiple files
	#filesearch.py
	
	files = glob.glob(path + "/*")
	if files is not []:
		for file in files:
			if os.path.isfile(file):
				if exts is None or exts.count(os.path.splitext(file)[1]) is not 0:
					for line in fileinput.input(file,inplace=1):
						lineno = 0
						lineno = string.find(line, search)
						if lineno >0:
							line =line.replace(search, replace)
						sys.stdout.write(line)