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<?php
/*
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2008 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*
* NOTE: Portions of this file are copied from the Smarty modifier.truncate.php
* file and are bound by their license, found in lib/smarty/COPYING.lib
*/
/**
* Smarty truncate modifier plugin. This differs from the standard Smarty plugin
* in that it respects HTML entities and doesn't split them.
*
* Type: modifier<br>
* Name: entitytruncate<br>
* Purpose: Truncate a string to a certain length if necessary,
* optionally splitting in the middle of a word, and
* appending the $etc string. Won't split an HTML entity.
*
* @param string $string the input string
* @param int $length what to truncate it to (max length upon return)
* @param string $etc what to use to indicate that there was more (default: "...")
* @param boolean $breakWords break words or not?
* @return string
*/
function smarty_modifier_entitytruncate($string, $length, $etc='...', $breakWords=false) {
if (empty($string)) {
return '';
}
/*
* Convert multibyte characters to html entities and then get an entity-safe substring.
* Split the string exactly on the boundary. If there's no change, then we're done.
*/
$string = GalleryUtilities::utf8ToUnicodeEntities($string);
list ($tmp, $piece) = GalleryUtilities::entitySubstr($string, 0, $length);
if ($piece == $string) {
return GalleryUtilities::unicodeEntitiesToUtf8($piece);
}
$etcLength = strlen($etc);
if ($etcLength < $length) {
/* Make room for the $etc string */
list ($tmp, $piece) = GalleryUtilities::entitySubstr($piece, 0, $length - $etcLength);
$pieceLength = strlen($piece);
if (!$breakWords && $string{$pieceLength-1} != ' ' && $string{$pieceLength} != ' ') {
/* We split a word, and we're not allowed to. Try to back up to the last space */
$splitIndex = strrpos($piece, ' ');
if ($splitIndex > 0) {
/* Found a space, truncate there. */
$piece = substr($piece, 0, $splitIndex);
}
}
$piece .= $etc;
}
/* Unicode entities back to UTF-8; may convert entities in original string, but that's ok */
return GalleryUtilities::unicodeEntitiesToUtf8($piece);
}
?>
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