def grep(self, pattern, url, depth = -1):
if depth is -1:
depth = self.depth
elif depth is 0 or not url or url in self.visited:
return
self.visited.append(url)
f = FileParser(url)
matches = f.search(pattern)
if len(matches) > 0:
print url + ':'
for i in matches:
print " ", i
if depth > 1:
for i in f.outlinks():
self.grep(pattern, i, depth - 1)
