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Posted By

jatkins on 01/19/11


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regex search text match RegularExpression searching


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Global regex search

 / Published in: JavaScript
 

Released into the public domain. needle must be a regex; to pass a string, escape it and pass as new RegExp(escaped_string, 'g'). Case sensitive.

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  1. function global_search(needle, haystack) {
  2. 	if(typeof needle=='function') {
  3. 		haystack_remaining = haystack;
  4. 		match   = '';
  5. 		matches = [];
  6. 		results = [];
  7. 		result  = 0;
  8. 		offset  = 0;
  9. 		var i = 0;
  10. 		while(haystack_remaining && (result = haystack_remaining.search(needle)) != -1) {
  11. 			match = haystack_remaining.match(needle);
  12. 			match = match[0];
  13. 			matches[matches.length] = match;
  14. 			results[results.length] = result + offset;
  15. 			haystack_remaining = haystack_remaining.substring(result + match.length);
  16. 			offset += result + match.length;
  17. 			i++;
  18. 		}
  19. 		return [results, matches];
  20. 	}
  21. 	else
  22. 		return false;
  23. }

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