private function CSSmin::str_slice in Advanced CSS/JS Aggregation 8.2

Same name and namespace in other branches

1. 8.3 advagg_css_minify/yui/CSSMin.inc \CSSmin::str_slice()
2. 6 advagg_css_compress/yui/CSSMin.inc \CSSmin::str_slice()

PHP port of Javascript's "slice" function for strings only Author: Tubal Martin http://blog.margenn.com Tests: http://margenn.com/tubal/str_slice/

Parameters

string $str:

int $start index:

int|bool $end index (optional):

Return value

string

5 calls to CSSmin::str_slice()

CSSmin::compress_hex_colors in advagg_css_minify/yui/CSSMin.inc

Utility method to compress hex color values of the form #AABBCC to #ABC or short color name.

CSSmin::extract_data_urls in advagg_css_minify/yui/CSSMin.inc

Utility method to replace all data urls with tokens before we start compressing, to avoid performance issues running some of the subsequent regexes against large strings chunks.

CSSmin::minify in advagg_css_minify/yui/CSSMin.inc

Does bulk of the minification

CSSmin::replace_string in advagg_css_minify/yui/CSSMin.inc

CSSmin::run in advagg_css_minify/yui/CSSMin.inc

Minify a string of CSS

File

advagg_css_minify/yui/CSSMin.inc, line 748

Class

CSSmin

Code

private function str_slice($str, $start = 0, $end = FALSE) {
  if ($end !== FALSE && ($start < 0 || $end <= 0)) {
    $max = strlen($str);
    if ($start < 0) {
      if (($start = $max + $start) < 0) {
        return '';
      }
    }
    if ($end < 0) {
      if (($end = $max + $end) < 0) {
        return '';
      }
    }
    if ($end <= $start) {
      return '';
    }
  }
  $slice = $end === FALSE ? substr($str, $start) : substr($str, $start, $end - $start);
  return $slice === FALSE ? '' : $slice;
}