<?php
/**
* Klasa konwertuje wiadomość ({@link BotMsg}) do formatu specyficznego dla Gadu-Gadu
*/
class BotMsgGG implements BotMsgInterface {
private $parser;
private $html = '';
private $old = '';
private $format = '';
private $images = array();
private $f_handl = FALSE;
private $f_old = '';
private $f_type = 0x00;
private $f_color = '';
const FORMAT_BOLD = 0x01;
const FORMAT_ITALIC = 0x02;
const FORMAT_UNDERLINE =0x04;
const FORMAT_COLOR = 0x08;
const FORMAT_IMAGE = 0x80;
/**
* @param BotMsg $msg Wiadomość do przekonwertowania
*/
function __construct(BotMsg $msg) {
$parser = $msg->getParser();
unset($msg);
$this->parser = new DOMDocument('1.0', 'utf-8');
$this->parser->loadHTML('<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body></body></html>');
$this->rewrite( $parser->getElementsByTagName('body')->item(0), $this->parser->getElementsByTagName('body')->item(0) );
unset($parser);
$this->parse( $this->parser->getElementsByTagName('body')->item(0) );
$this->html = strtr(
(string)substr($this->parser->saveXML( $this->parser->getElementsByTagName('body')->item(0) ), 6, -7),
array('/>' => '>') // Tak! GG nie lubi XML!
);
}
/**
* Zwraca wiadomość zgodną z BotAPI Gadu-Gadu, którą można przekazać bezpośrednio do BotMastera
* @param NULL|bool $img Czy dołączać obrazki?
* @return string
*/
function getGG($image = NULL) {
if($image === FALSE) {
$image = '';
}
elseif($image === TRUE) {
$last = array_pop($this->images);
if(count($this->images) > 0) {
$push = new BotAPIGG();
foreach($this->images as $data) {
$push->putImage($image[3]);
}
}
$image = $last[2].file_get_contents($last[3]);
}
else
{
if(count($this->images) > 0) {
$push = new BotAPIGG();
foreach($this->images as $image) {
if(!$push->existsImage($image[2])) {
$push->putImage($image[3]);
}
}
}
$image = '';
}
$format = $this->getFormat();
return pack('VVVV', strlen($this->html)+1, strlen($this->old)+1, strlen($image), strlen($format)).$this->html."\0".$this->old."\0".$image.$format;
}
/**
* Zwraca wiadomość zgodną z BotAPI Gadu-Gadu, którą można przekazać bezpośrednio do BotMastera
* @return string
*/
function __toString() {
return $this->getGG();
}
/**
* Zwraca wiadomość w formacie HTML przekonwertowaną tak, by zawierała jedynie dozwolone tagi.
* @return string
*/
function getHTML() {
return $this->html;
}
/**
* Zwraca wiadomość jako tekst
* @return string
*/
function getText() {
return $this->old;
}
/**
* Zwraca formatowanie wiadomości tekstowej zgodne z BotAPI Gadu-Gadu
* @see BotMsgGG::getText()
* @return string
*/
function getFormat() {
if($this->format == '') {
return '';
}
else
{
return pack('Cv', 0x02, strlen($this->format)).$this->format;
}
}
/**
* Wyślij wiadomość na standardowe wyjście w sposób właściwy dla BotAPI
*/
function sendPullResponse() {
header('Content-Type: application/x-gadu-gadu; charset=utf-8');
echo $this->getGG();
}
private function rewrite($dom, $saveto, $top = TRUE) {
if(!($dom instanceof DOMElement)) {
throw new BotMsgException('Nieznany element DOM: '.get_class($dom));
}
foreach($dom->childNodes as $node) {
if($node instanceof DOMElement) {
switch(strtolower($node->tagName)) {
case 'b':
case 'i':
case 'u':
case 'sup':
case 'sub':
case 'span':
$tag = DOMHelper::cloneNode($node, $saveto);
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
break;
case 'strong':
$tag = DOMHelper::cloneNode($node, $saveto, 'b');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
break;
case 'script':
case 'style':
break;
case 'p':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
DOMHelper::insertElement('br', $saveto);
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
DOMHelper::insertElement('br', $saveto);
DOMHelper::insertElement('br', $saveto);
break;
case 'a':
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
$this->rewrite($node, $tag, FALSE);
if($node->getAttribute('href') != $node->textContent) {
$tag->appendChild($tag->ownerDocument->createTextNode(' ('.$node->getAttribute('href').')'));
}
$saveto->appendChild($tag);
break;
case 'h1':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
DOMHelper::insertElement('br', $saveto);
$tag = DOMHelper::cloneNode($node, $saveto, 'b');
$tag2 = $tag->ownerDocument->createElement('u');
$tag->appendChild($tag2);
$this->rewrite($node, $tag2, FALSE);
$saveto->appendChild($tag);
DOMHelper::insertElement('br', $saveto);
break;
case 'h2':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
DOMHelper::insertElement('br', $saveto);
$tag = DOMHelper::cloneNode($node, $saveto, 'b');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
DOMHelper::insertElement('br', $saveto);
break;
case 'h3':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
DOMHelper::insertElement('br', $saveto);
$tag = DOMHelper::cloneNode($node, $saveto, 'b');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
DOMHelper::insertElement('br', $saveto);
break;
case 'ul':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
break;
case 'ol':
DOMHelper::rtrim($saveto);
DOMHelper::insertElement('br', $saveto);
if(!$node->hasAttribute('start') || !ctype_digit($node->getAttribute('start'))) {
$node->setAttribute('start', 1);
}
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
break;
case 'li':
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
if(strtolower($dom->tagName) == 'ul') {
$tag->appendChild($tag->ownerDocument->createTextNode('- '));
}
elseif(strtolower($dom->tagName) == 'ol') {
$tag->appendChild($tag->ownerDocument->createTextNode($dom->getAttribute('start').'. '));
$dom->setAttribute('start', $dom->getAttribute('start')+1);
}
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
$saveto->appendChild($saveto->ownerDocument->createElement('br'));
break;
case 'br':
case 'img':
$tag = DOMHelper::cloneNode($node, $saveto);
$saveto->appendChild($tag);
break;
default:
$tag = DOMHelper::cloneNode($node, $saveto, 'span');
$this->rewrite($node, $tag, FALSE);
$saveto->appendChild($tag);
break;
}
}
elseif($node instanceof DOMText) {
$val = strtr($node->nodeValue, array("\n" => '', "\r" => ''));
if($val) {
$saveto->appendChild($saveto->ownerDocument->createTextNode($val));
}
}
else
{
$saveto->appendChild($saveto->ownerDocument->importNode($node, TRUE));
}
}
if($top) {
DOMHelper::trim($saveto);
}
foreach($saveto->childNodes as $node) {
if(($node instanceof DOMElement) && $node->tagName == 'span' && $node->attributes->length == 0) {
while($node->hasChildNodes()) {
$node->parentNode->insertBefore($node->firstChild, $node);
}
$node->parentNode->removeChild($node);
}
}
foreach($saveto->childNodes as $node) {
if(($node instanceof DOMElement) && $node->hasAttribute('auto')) {
$node->removeAttribute('auto');
}
}
}
private function image($node) {
if($node->hasAttribute('src')) {
$src = $node->getAttribute('src');
$node->removeAttribute('src');
if(!is_file($src)) {
return;
}
if(isset($this->images[$src])) {
list($crc, $size, $name) = $this->images[$src];
}
else
{
$size = filesize($src);
if($size<0 || $size>262144) {
return;
}
$crc = hash_file('crc32b', $src);
$name = sprintf('%08s%08x', $crc, $size);
$this->images[$src] = array($crc, $size, $name, $src);
}
$node->setAttribute('name', $name);
$this->format .= pack('vC', mb_strlen($this->old), self::FORMAT_IMAGE)
.pack('CCVV', 0x09, 0x01, $size, hexdec($crc));
$this->f_old = '';
}
}
private function format(&$node) {
$node->setAttribute('beforeFormatType', dechex($this->f_type));
$node->setAttribute('beforeFormatColor', base64_encode($this->f_color));
if($node->hasAttribute('color')) {
$color = trim($node->getAttribute('color'));
if(substr($color, 0, 1)=='#' AND (strlen($color)==4 OR strlen($color)==7) AND ctype_xdigit(substr($color, 1))) {
$node->setAttribute('style', 'color:'.$color.';'.$node->getAttribute('style'));
$R = $G = $B = 0;
if(strlen($color)==4) {
$R = hexdec(str_repeat(substr($color, 1, 1), 2));
$G = hexdec(str_repeat(substr($color, 2, 1), 2));
$B = hexdec(str_repeat(substr($color, 3, 1), 2));
}
else
{
$R = hexdec(substr($color, 1, 2));
$G = hexdec(substr($color, 3, 2));
$B = hexdec(substr($color, 5, 2));
}
$this->f_color = chr($R).chr($G).chr($B);
$this->f_type |= self::FORMAT_COLOR;
}
$node->removeAttribute('color');
}
switch(strtolower($node->tagName)) {
case 'b':
$this->f_type |= self::FORMAT_BOLD;
break;
case 'i':
$this->f_type |= self::FORMAT_ITALIC;
break;
case 'u':
$this->f_type |= self::FORMAT_UNDERLINE;
break;
}
}
private function unformat($node) {
$this->f_type = hexdec($node->getAttribute('beforeFormatType'));
$node->removeAttribute('beforeFormatType');
$this->f_color = base64_decode($node->getAttribute('beforeFormatColor'));
$node->removeAttribute('beforeFormatColor');
return TRUE;
}
private function cf() {
$format = pack('C', $this->f_type).$this->f_color;
if($this->f_old != $format) {
$this->format .= pack('v', mb_strlen($this->old)).$format;
$this->f_old = $format;
}
}
private function parse($dom) {
if(!($dom instanceof DOMElement)) {
throw new BotMsgException('Nieznany element DOM: '.$dom);
}
foreach($dom->childNodes as $node) {
if($node instanceof DOMText || $node instanceof DOMEntity) {
$this->cf();
$this->old .= $node->nodeValue;
}
elseif($node instanceof DOMElement) {
if($node->tagName == 'br') {
$this->old .= "\r\n";
continue;
}
elseif($node->tagName == 'img') {
$this->image($node);
continue;
}
$this->format($node);
$this->parse($node);
$this->unformat($node);
}
else
{
throw new BotMsgException('Nieznany element DOM: '.$node);
}
}
}
}
?>