From 6c6b78d6bd4d19af78e61a6b08c84696a2a88fa5 Mon Sep 17 00:00:00 2001 From: Guido van Rossum Date: Mon, 30 Dec 1991 16:03:05 +0000 Subject: Initial revision --- Lib/regexp.py | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Lib/regexp.py (limited to 'Lib/regexp.py') diff --git a/Lib/regexp.py b/Lib/regexp.py new file mode 100644 index 0000000000..fc6fcad2a2 --- /dev/null +++ b/Lib/regexp.py @@ -0,0 +1,37 @@ +# Provide backward compatibility for module "regexp" using "regex". + +import regex +from regex_syntax import * + +class Prog: + def init(self, pat): + save_syntax = regex.set_syntax(RE_SYNTAX_AWK) + try: + self.prog = regex.compile(pat) + finally: + xxx = regex.set_syntax(save_syntax) + return self + def match(self, args): + if type(args) = type(()): + str, offset = args + else: + str, offset = args, 0 + if self.prog.search(str, offset) < 0: + return () + regs = self.prog.regs() + i = len(regs) + while i > 0 and regs[i-1] = (-1, -1): + i = i-1 + return regs[:i] + +def compile(pat): + return Prog().init(pat) + +cache_pat = None +cache_prog = None + +def match(pat, str): + global cache_pat, cache_prog + if pat <> cache_pat: + cache_pat, cache_prog = pat, compile(pat) + return cache_prog.match(str) -- cgit v1.2.1