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