jsunfuck.py 文件源码

def __handle_unescape(self, key):
        start = 0
        while True:
            start_js = self.js
            offset = self.js.find(key, start)
            if offset == -1: break

            offset += len(key)
            expr = ''
            extra = ''
            last_c = self.js[offset - 1]
            abort = False
            for i, c in enumerate(self.js[offset:]):
                extra += c
                if c == ')':
                    break
                elif (i > 0 and c == '(') or (c == '[' and last_c != '+'):
                    abort = True
                    break
                elif c == '%' or c in string.hexdigits:
                    expr += c
                last_c = c

            if not abort:
                self.js = self.js.replace(key + extra, urllib.unquote(expr))

                if start_js == self.js:
                    break
            else:
                start = offset