workflow.py 文件源码

def _search_for_query(self, query):
        if query in self._search_pattern_cache:
            return self._search_pattern_cache[query]

        # Build pattern: include all characters
        pattern = []
        for c in query:
            # pattern.append('[^{0}]*{0}'.format(re.escape(c)))
            pattern.append('.*?{0}'.format(re.escape(c)))
        pattern = ''.join(pattern)
        search = re.compile(pattern, re.IGNORECASE).search

        self._search_pattern_cache[query] = search
        return search