-<?php

-/**

-*

-* This file is part of the phpBB Forum Software package.

-*

-* @copyright (c) phpBB Limited <https://www.phpbb.com>

-* @license GNU General Public License, version 2 (GPL-2.0)

-*

-* For full copyright and license information, please see

-* the docs/CREDITS.txt file.

-*

-*/

-

-/**

-* @ignore

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* A wrapper function for the normalizer which takes care of including the class if required and modifies the passed strings

-* to be in NFC (Normalization Form Composition).

-*

-* @param mixed $strings a string or an array of strings to normalize

-* @return mixed the normalized content, preserving array keys if array given.

-*/

-function utf8_new_normalize_nfc($strings)

-{

- if (empty($strings))

- {

- return $strings;

- }

-

- if (!is_array($strings))

- {

- utf_new_normalizer::nfc($strings);

- }

- else if (is_array($strings))

- {

- foreach ($strings as $key => $string)

- {

- if (is_array($string))

- {

- foreach ($string as $_key => $_string)

- {

- utf_new_normalizer::nfc($strings[$key][$_key]);

- }

- }

- else

- {

- utf_new_normalizer::nfc($strings[$key]);

- }

- }

- }

-

- return $strings;

-}

-

-class utf_new_normalizer

-{

- /**

- * Validate, cleanup and normalize a string

- *

- * The ultimate convenience function! Clean up invalid UTF-8 sequences,

- * and convert to Normal Form C, canonical composition.

- *

- * @param string &$str The dirty string

- * @return string The same string, all shiny and cleaned-up

- */

- function cleanup(&$str)

- {

- // The string below is the list of all autorized characters, sorted by frequency in latin text

- $pos = strspn($str, "\x20\x65\x69\x61\x73\x6E\x74\x72\x6F\x6C\x75\x64\x5D\x5B\x63\x6D\x70\x27\x0A\x67\x7C\x68\x76\x2E\x66\x62\x2C\x3A\x3D\x2D\x71\x31\x30\x43\x32\x2A\x79\x78\x29\x28\x4C\x39\x41\x53\x2F\x50\x22\x45\x6A\x4D\x49\x6B\x33\x3E\x35\x54\x3C\x44\x34\x7D\x42\x7B\x38\x46\x77\x52\x36\x37\x55\x47\x4E\x3B\x4A\x7A\x56\x23\x48\x4F\x57\x5F\x26\x21\x4B\x3F\x58\x51\x25\x59\x5C\x09\x5A\x2B\x7E\x5E\x24\x40\x60\x7F\x0D");

- $len = strlen($str);

-

- if ($pos == $len)

- {

- // ASCII strings with no special chars return immediately

- return;

- }

-

- // Note: we do not check for $GLOBALS['utf_canonical_decomp']. It is assumed they are always loaded together

- if (!isset($GLOBALS['utf_nfc_qc']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_nfc_qc.' . $phpEx);

- }

-

- if (!isset($GLOBALS['utf_canonical_decomp']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_canonical_decomp.' . $phpEx);

- }

-

- // Replace any byte in the range 0x00..0x1F, except for \r, \n and \t

- // We replace those characters with a 0xFF byte, which is illegal in UTF-8 and will in turn be replaced with a UTF replacement char

- $str = strtr(

- $str,

- "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0B\x0C\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F",

- "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"

- );

-

- $str = utf_new_normalizer::recompose($str, $pos, $len, $GLOBALS['utf_nfc_qc'], $GLOBALS['utf_canonical_decomp']);

- }

-

- /**

- * Validate and normalize a UTF string to NFC

- *

- * @param string &$str Unchecked UTF string

- * @return string The string, validated and in normal form

- */

- function nfc(&$str)

- {

- $pos = strspn($str, UTF8_ASCII_RANGE);

- $len = strlen($str);

-

- if ($pos == $len)

- {

- // ASCII strings return immediately

- return;

- }

-

- if (!isset($GLOBALS['utf_nfc_qc']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_nfc_qc.' . $phpEx);

- }

-

- if (!isset($GLOBALS['utf_canonical_decomp']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_canonical_decomp.' . $phpEx);

- }

-

- $str = utf_new_normalizer::recompose($str, $pos, $len, $GLOBALS['utf_nfc_qc'], $GLOBALS['utf_canonical_decomp']);

- }

-

- /**

- * Validate and normalize a UTF string to NFKC

- *

- * @param string &$str Unchecked UTF string

- * @return string The string, validated and in normal form

- */

- function nfkc(&$str)

- {

- $pos = strspn($str, UTF8_ASCII_RANGE);

- $len = strlen($str);

-

- if ($pos == $len)

- {

- // ASCII strings return immediately

- return;

- }

-

- if (!isset($GLOBALS['utf_nfkc_qc']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_nfkc_qc.' . $phpEx);

- }

-

- if (!isset($GLOBALS['utf_compatibility_decomp']))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_compatibility_decomp.' . $phpEx);

- }

-

- $str = utf_new_normalizer::recompose($str, $pos, $len, $GLOBALS['utf_nfkc_qc'], $GLOBALS['utf_compatibility_decomp']);

- }

-

- /**

- * Recompose a UTF string

- *

- * @param string $str Unchecked UTF string

- * @param integer $pos Position of the first UTF char (in bytes)

- * @param integer $len Length of the string (in bytes)

- * @param array &$qc Quick-check array, passed by reference but never modified

- * @param array &$decomp_map Decomposition mapping, passed by reference but never modified

- * @return string The string, validated and recomposed

- *

- * @access private

- */

- function recompose($str, $pos, $len, &$qc, &$decomp_map)

- {

- global $utf_canonical_comp;

-

- // Load the canonical composition table

- if (!isset($utf_canonical_comp))

- {

- global $phpbb_root_path, $phpEx;

- include($phpbb_root_path . 'includes/utf/data/utf_canonical_comp.' . $phpEx);

- }

-

- return utf_normalizer::recompose($str, $pos, $len, $qc, $decomp_map);

- }

-}