98 lines
3.1 KiB
PHP
98 lines
3.1 KiB
PHP
<?php
|
|
/**
|
|
* This file is part of PHPWord - A pure PHP library for reading and writing
|
|
* word processing documents.
|
|
*
|
|
* PHPWord is free software distributed under the terms of the GNU Lesser
|
|
* General Public License version 3 as published by the Free Software Foundation.
|
|
*
|
|
* For the full copyright and license information, please read the LICENSE
|
|
* file that was distributed with this source code. For the full list of
|
|
* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
|
|
*
|
|
* @see https://github.com/PHPOffice/PHPWord
|
|
* @copyright 2010-2018 PHPWord contributors
|
|
* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
|
|
*/
|
|
|
|
namespace PhpOffice\PhpWord\Escaper;
|
|
|
|
/**
|
|
* @since 0.13.0
|
|
*
|
|
* @codeCoverageIgnore
|
|
*/
|
|
class Rtf extends AbstractEscaper
|
|
{
|
|
protected function escapeAsciiCharacter($code)
|
|
{
|
|
if ($code == 9) {
|
|
return '{\\tab}';
|
|
}
|
|
if (0x20 > $code || $code >= 0x80) {
|
|
return '{\\u' . $code . '}';
|
|
}
|
|
if ($code == 123 || $code == 125 || $code == 92) { // open or close brace or backslash
|
|
return '\\' . chr($code);
|
|
}
|
|
|
|
return chr($code);
|
|
}
|
|
|
|
protected function escapeMultibyteCharacter($code)
|
|
{
|
|
return '\\uc0{\\u' . $code . '}';
|
|
}
|
|
|
|
/**
|
|
* @see http://www.randomchaos.com/documents/?source=php_and_unicode
|
|
* @param string $input
|
|
*/
|
|
protected function escapeSingleValue($input)
|
|
{
|
|
$escapedValue = '';
|
|
|
|
$numberOfBytes = 1;
|
|
$bytes = array();
|
|
for ($i = 0; $i < strlen($input); ++$i) {
|
|
$character = $input[$i];
|
|
$asciiCode = ord($character);
|
|
|
|
if ($asciiCode < 128) {
|
|
$escapedValue .= $this->escapeAsciiCharacter($asciiCode);
|
|
} else {
|
|
if (0 == count($bytes)) {
|
|
if ($asciiCode < 224) {
|
|
$numberOfBytes = 2;
|
|
} elseif ($asciiCode < 240) {
|
|
$numberOfBytes = 3;
|
|
} elseif ($asciiCode < 248) {
|
|
$numberOfBytes = 4;
|
|
}
|
|
}
|
|
|
|
$bytes[] = $asciiCode;
|
|
|
|
if ($numberOfBytes == count($bytes)) {
|
|
if (4 == $numberOfBytes) {
|
|
$multibyteCode = ($bytes[0] % 8) * 262144 + ($bytes[1] % 64) * 4096 + ($bytes[2] % 64) * 64 + ($bytes[3] % 64);
|
|
} elseif (3 == $numberOfBytes) {
|
|
$multibyteCode = ($bytes[0] % 16) * 4096 + ($bytes[1] % 64) * 64 + ($bytes[2] % 64);
|
|
} else {
|
|
$multibyteCode = ($bytes[0] % 32) * 64 + ($bytes[1] % 64);
|
|
}
|
|
|
|
if (65279 != $multibyteCode) {
|
|
$escapedValue .= $multibyteCode < 128 ? $this->escapeAsciiCharacter($multibyteCode) : $this->escapeMultibyteCharacter($multibyteCode);
|
|
}
|
|
|
|
$numberOfBytes = 1;
|
|
$bytes = array();
|
|
}
|
|
}
|
|
}
|
|
|
|
return $escapedValue;
|
|
}
|
|
}
|