<?php
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class BotMsgException extends Exception {}
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interface BotMsgInterface {
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function __construct(BotMsg $msg);
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function __toString();
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function sendPullResponse();
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}
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class BotMsg {
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private $beautiful = TRUE;
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private $parser = NULL;
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private $html = NULL;
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private $text = NULL;
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private $raw = '';
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/**
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* Włącza lub wyłącza "upiększanie" konwertowanej do czystego tekstu wiadomości, np.:
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* <b>abc</b> zamieniane jest na *abc*
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* <h1>efg</h1> przechodzi w = efg =
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* Domyślnie włączone
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* @param bool $set Ustawienie "upiększania"
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*/
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function beautifulText($set = FALSE) {
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$this->beautiful = (bool)$set;
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}
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/**
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* Konstruktor. De facto alias dla {@link BotMsg::append()}
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*/
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function __construct($str = NULL) {
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if($str !== NULL) {
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$this->append($str);
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}
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}
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/**
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* Serializacja klasy wymaga zapisania tylko niektórych elementów
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*/
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function __sleep() {
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return array('beautiful', 'raw');
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}
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/**
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* Alias dla {@link BotMsg::append()}
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*/
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function a($str) {
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$this->append($str);
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}
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/**
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* Dodaje kod HTML na koniec wiadomości
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* @param string $str Treść do dodania
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*/
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function append($str) {
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$this->text = $this->html = $this->parser = NULL;
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$this->raw .= (string)$str;
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}
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/**
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* Zwraca wiadomość jako czysty tekst
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* @return string Wiadomość
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*/
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function getText() {
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if($this->text === NULL) {
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$this->text = trim($this->parseTextDOM($this->getParser()->getElementsByTagName('body')->item(0)));
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}
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return $this->text;
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}
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/**
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* Zwraca wiadomość jako kod HTML
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* @return string Wiadomość
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*/
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function getHTML() {
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if($this->html === NULL) {
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$doc = $this->getParser();
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$this->parseHTMLDOM( $doc->getElementsByTagName('body')->item(0) );
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$this->html = $doc->saveXML( $doc->getElementsByTagName('body')->item(0) );
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}
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return (string)substr($this->html, 6, -7);
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}
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/**
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* Zwraca treść wiadomości zapisaną przy użyciu {@link BotMsg::append()} bez żadnych modyfikacji
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* @return string Oryginalna wiadomość
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*/
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function getRaw() {
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return $this->raw;
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}
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/**
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* Zwraca wiadomość jako kod HTML
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* @return string Wiadomość
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*/
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function __toString() {
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return $this->getHTML();
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}
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/**
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* Zwraca kopię drzewa DOM wiadomości
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* @return DOMDocument Wiadomość
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*/
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function getParser() {
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if($this->parser === NULL) {
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$this->parser = new DOMDocument('1.0', 'utf-8');
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try {
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$this->parser->loadHTML('<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body>'.$this->raw.'</body></html>');
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}
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catch(ErrorException $e) {
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if($e->getSeverity() != E_WARNING) {
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throw $e;
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}
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}
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foreach($this->parser->getElementsByTagName('a') as $node) {
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if(!$node->hasAttribute('href')) {
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$node->setAttribute('href', $node->textContent);
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}
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}
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}
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return $this->parser->cloneNode(TRUE);
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}
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private function parseTextDOM($dom) {
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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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$return = '';
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foreach($dom->childNodes as $node) {
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if($node instanceof DOMText || $node instanceof DOMEntity) {
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$return .= strtr($node->nodeValue, array("\n" => '', "\r" => ''));
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}
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elseif($node instanceof DOMElement) {
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switch(strtolower($node->tagName)) {
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case 'b':
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case 'strong':
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$return .= ($this->beautiful ? '*' : '').$this->parseTextDOM($node).($this->beautiful ? '*' : '');
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break;
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case 'u':
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$return .= ($this->beautiful ? '_' : '').$this->parseTextDOM($node).($this->beautiful ? '_' : '');
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break;
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case 'i':
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$return .= ($this->beautiful ? '/' : '').$this->parseTextDOM($node).($this->beautiful ? '/' : '');
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break;
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case 'br':
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$return .= "\n";
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break;
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case 'p':
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if(substr($return, -1) != "\n") {
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$return .= "\n\n";
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}
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$return .= $this->parseTextDOM($node)."\n\n";
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break;
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case 'h1':
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if(substr($return, -1) != "\n") {
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$return .= "\n\n";
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}
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$return .= ($this->beautiful ? '= ' : '').$this->parseTextDOM($node).($this->beautiful ? ' =' : '')."\n";
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break;
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case 'h2':
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if(substr($return, -1) != "\n") {
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$return .= "\n\n";
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}
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$return .= ($this->beautiful ? '== ' : '').$this->parseTextDOM($node).($this->beautiful ? ' ==' : '')."\n";
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break;
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case 'h3':
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if(substr($return, -1) != "\n") {
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$return .= "\n\n";
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}
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$return .= ($this->beautiful ? '=== ' : '').$this->parseTextDOM($node).($this->beautiful ? ' ===' : '')."\n";
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break;
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case 'td':
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$return .= $this->parseTextDOM($node)."\t";
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break;
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case 'th':
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$return .= ($this->beautiful ? '*' : '').$this->parseTextDOM($node).($this->beautiful ? '*' : '')."\t";
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break;
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case 'tr':
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$return .= $this->parseTextDOM($node)."\n";
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break;
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case 'a':
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$return .= $this->parseTextDOM($node);
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if($node->getAttribute('href') != $node->textContent) {
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$return .= ' ('.$node->getAttribute('href').')';
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}
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break;
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case 'script':
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case 'style':
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case 'img':
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break;
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default:
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$return .= $this->parseTextDOM($node);
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break;
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}
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}
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else
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{
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throw new BotMsgException('Nieznany element DOM: '.get_class($node));
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}
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}
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return $return;
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}
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private function parseHTMLDOM($dom) {
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if(!($dom instanceof DOMNode)) {
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throw new BotMsgException('Nieznany element DOM: '.get_class($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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if($node->hasAttribute('color')) {
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$color = trim($node->getAttribute('color'));
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$node->removeAttribute('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.';'.$node->getAttribute('style'));
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}
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}
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$this->parseHTMLDOM($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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