<?php

/**

 * Smarty plugin

 *

 * @package    Smarty

 * @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 (Smarty::$_MBSTRING) {

        if ($lc_rest) {

            // uppercase (including hyphenated words)

            $upper_string = mb_convert_case($string, MB_CASE_TITLE, Smarty::$_CHARSET);

        } else {

            // uppercase word breaks

            $upper_string = preg_replace_callback("!(^|[^\p{L}'])([\p{Ll}])!S" . Smarty::$_UTF8_MODIFIER, '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!" . Smarty::$_UTF8_MODIFIER, $string, $matches, PREG_OFFSET_CAPTURE)) {

                foreach ($matches[1] as $match) {

                    $upper_string = substr_replace($upper_string, mb_strtolower($match[0], Smarty::$_CHARSET), $match[1], strlen($match[0]));

                }

            }

        }

        $upper_string = preg_replace_callback("!((^|\s)['\"])(\w)!" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_mbconvert2_cb', $upper_string);

        return $upper_string;

    }

    // lowercase first

    if ($lc_rest) {

        $string = strtolower($string);

    }

    // uppercase (including hyphenated words)

    $upper_string = preg_replace_callback("!(^|[^\p{L}'])([\p{Ll}])!S" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_ucfirst_cb', $string);

    // check uc_digits case

    if (!$uc_digits) {

        if (preg_match_all("!\b([\p{L}]*[\p{N}]+[\p{L}]*)\b!" . Smarty::$_UTF8_MODIFIER, $string, $matches, PREG_OFFSET_CAPTURE)) {

            foreach ($matches[1] as $match) {

                $upper_string = substr_replace($upper_string, strtolower($match[0]), $match[1], strlen($match[0]));

            }

        }

    }

    $upper_string = preg_replace_callback("!((^|\s)['\"])(\w)!" . Smarty::$_UTF8_MODIFIER, 'smarty_mod_cap_ucfirst2_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, Smarty::$_CHARSET);

}

function smarty_mod_cap_mbconvert2_cb($matches) {

    return stripslashes($matches[1]) . mb_convert_case(stripslashes($matches[3]), MB_CASE_UPPER, Smarty::$_CHARSET);

}

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]));

}