<?php
/**
 * Smarty plugin
 *
 * @package    Brainy
 * @subpackage PluginsModifier
 */

/**
 * Smarty capitalize modifier plugin
 *
 * Type:     modifier<br>
 * Name:     capitalize<br>
 * Purpose:  capitalize words in the string
 *
 * {@internal {$string|capitalize:true:true} is the fastest option for MBString enabled systems }}
 *
 * @param  string  $string    string to capitalize
 * @param  boolean $uc_digits also capitalize "x123" to "X123"
 * @param  boolean $lc_rest   capitalize first letters, lowercase all following letters "aAa" to "Aaa"
 * @return string capitalized string
 * @author Monte Ohrt <monte at ohrt dot com>
 * @author Rodney Rehm
 */
function smarty_modifier_capitalize($string, $uc_digits = false, $lc_rest = false)
{
    if ($lc_rest) {
        // uppercase (including hyphenated words)
        $upper_string = mb_convert_case($string, MB_CASE_TITLE, 'UTF-8');
    } else {
        // uppercase word breaks
        $upper_string = preg_replace_callback("!(^|[^\p{L}'])([\p{Ll}])!Su", 'smarty_mod_cap_mbconvert_cb', $string);
    }
    // check uc_digits case
    if (!$uc_digits) {
        if (preg_match_all("!\b([\p{L}]*[\p{N}]+[\p{L}]*)\b!u", $string, $matches, PREG_OFFSET_CAPTURE)) {
            foreach ($matches[1] as $match) {
                $upper_string = substr_replace($upper_string, mb_strtolower($match[0], 'UTF-8'), $match[1], strlen($match[0]));
            }
        }
    }
    $upper_string = preg_replace_callback("!((^|\s)['\"])(\w)!u", 'smarty_mod_cap_mbconvert2_cb', $upper_string);
    return $upper_string;
}

/*
 *
 * Bug: create_function() use exhausts memory when used in long loops
 * Fix: use declared functions for callbacks instead of using create_function()
 * Note: This can be fixed using anonymous functions instead, but that requires PHP >= 5.3
 *
 * @author Kyle Renfrow
 */
function smarty_mod_cap_mbconvert_cb($matches)
{
    return stripslashes($matches[1]).mb_convert_case(stripslashes($matches[2]), MB_CASE_UPPER, 'UTF-8');
}

function smarty_mod_cap_mbconvert2_cb($matches)
{
    return stripslashes($matches[1]).mb_convert_case(stripslashes($matches[3]), MB_CASE_UPPER, 'UTF-8');
}

function smarty_mod_cap_ucfirst_cb($matches)
{
    return stripslashes($matches[1]).ucfirst(stripslashes($matches[2]));
}

function smarty_mod_cap_ucfirst2_cb($matches)
{
    return stripslashes($matches[1]).ucfirst(stripslashes($matches[3]));
}
