Method ExtString.RxIsMatch

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Overload

Returns true if this string matches PCRE regular expression rx.

public static bool RxIsMatch(this string t, string rx, RXFlags flags = 0, Range? range = null)

Parameters

t  (string) This string. If null, returns false.

rx  (string) Regular expression. Cannot be null.

flags  (RXFlags) Options. Default 0. Flag UTF is implicitly added if rx contains non-ASCII characters and there is no flag NEVER_UTF.

range  (Range?) Start and end offsets in the subject string. If null (default), uses whole string. Examples: i..j (from i to j), i.. (from i to the end), ..j (from 0 to j). The subject part before the start index is not ignored if regular expression starts with a lookbehind assertion or anchor, eg ^ or \b or (?<=...). Instead of ^ you can use \G or flag RXFlags.ANCHORED. More info in PCRE documentation topic pcre2api, chapter "The string to be matched by pcre2_match()". The subject part after the end index is always ignored.

Returns

bool true if full or partial match. Partial match is possible if used a PARTIAL_ flag.

Exceptions

ArgumentException Invalid regular expression.

ArgumentOutOfRangeException Invalid range.

AuException Failed (unlikely).

Remarks

More info and examples: regexp.