pcre \ Q和\ E匹配错误(pcre \Q and \E match error)

pcre \ Q和\ E匹配错误(pcre \Q and \E match error) string sContent="the path is e:\\develop\\East\\parser(delay)"; string path="e:\\develop\\East\\parser(delay)"; char sRegex[128]; sprintf(sRegex, "\\Q%s\\E", src_str); pcrecpp::RE(sRegex).PartialMatch(sContent);

它不匹配，导致"\\East" will abort '\Q'如何修复此错误？

string sContent="the path is e:\\develop\\East\\parser(delay)"; string path="e:\\develop\\East\\parser(delay)"; char sRegex[128]; sprintf(sRegex, "\\Q%s\\E", src_str); pcrecpp::RE(sRegex).PartialMatch(sContent);

It doesn't match, cause "\\East" will abort '\Q'。How can I fix this error?

最满意答案

是的，这是\Q .. \E功能的问题。

您可以使用string quoted = RE::QuoteMeta(src_str);而不是使用它string quoted = RE::QuoteMeta(src_str); 这将转义包含反斜杠的字符串中的所有特殊正则表达式字符。

来源 ：引用METACHARACTERS

Yes, that's the problem with the \Q..\E feature.

Instead of using it, you can use string quoted = RE::QuoteMeta(src_str); that will escape all special regex characters in a string including backslashes.

source: QUOTING METACHARACTERS