mirror of
https://github.com/the-djmaze/snappymail.git
synced 2026-09-01 13:39:22 +03:00
338 lines
8.8 KiB
PHP
338 lines
8.8 KiB
PHP
<?php
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/*
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* This file is part of MailSo.
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*
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* (c) 2014 Usenko Timur
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace MailSo\Base;
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/**
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* @category MailSo
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* @package Base
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*/
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abstract class HtmlUtils
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{
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/**
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* Used by DoSaveMessage() and DoSendMessage()
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*/
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public static function BuildHtml(string $sHtml, array &$aFoundCids, array &$aFoundDataURL, array &$aFoundContentLocationUrls) : string
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{
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$bState = true;
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if (\MailSo\Base\Utils::FunctionCallable('libxml_use_internal_errors'))
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{
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$bState = \libxml_use_internal_errors(true);
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}
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$sHtml = \str_replace('<o:p></o:p>', '', $sHtml);
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$sHtml = \str_replace('<o:p>', '<span>', $sHtml);
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$sHtml = \str_replace('</o:p>', '</span>', $sHtml);
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/*
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if (\function_exists('tidy_repair_string')) {
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# http://tidy.sourceforge.net/docs/quickref.html
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$tidyConfig = array(
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'bare' => 1,
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'join-classes' => 1,
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'newline' => 'LF',
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'numeric-entities' => 1,
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'quote-nbsp' => 0,
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'word-2000' => 1
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);
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$sHtml = \tidy_repair_string($sHtml, $tidyConfig, 'utf8');
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}
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*/
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$sHtml = \preg_replace(array(
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'/<p[^>]*><\/p>/i',
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'/<!doctype[^>]*>/i',
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'/<\?xml [^>]*\?>/i'
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), '', $sHtml);
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$sHtmlAttrs = '';
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$aMatch = array();
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if (\preg_match('/<html([^>]+)>/im', $sHtml, $aMatch) && !empty($aMatch[1])) {
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$sHtmlAttrs = $aMatch[1];
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}
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$sBodyAttrs = '';
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$aMatch = array();
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if (\preg_match('/<body([^>]+)>/im', $sHtml, $aMatch) && !empty($aMatch[1])) {
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$sBodyAttrs = $aMatch[1];
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}
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$sHtml = \preg_replace('/<\/?(head|body|html)(\\s[^>]*)?>/si', '', $sHtml);
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$sHtmlAttrs = \preg_replace('/xmlns:[a-z]="[^"]*"/i', '', $sHtmlAttrs);
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$sHtmlAttrs = \preg_replace('/xmlns:[a-z]=\'[^\']*\'/i', '', $sHtmlAttrs);
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$sHtmlAttrs = \preg_replace('/xmlns="[^"]*"/i', '', $sHtmlAttrs);
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$sHtmlAttrs = \preg_replace('/xmlns=\'[^\']*\'/i', '', $sHtmlAttrs);
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$sBodyAttrs = \preg_replace('/xmlns:[a-z]="[^"]*"/i', '', $sBodyAttrs);
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$sBodyAttrs = \preg_replace('/xmlns:[a-z]=\'[^\']*\'/i', '', $sBodyAttrs);
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$oDoc = new \DOMDocument('1.0', 'UTF-8');
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$oDoc->encoding = 'UTF-8';
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$oDoc->strictErrorChecking = false;
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$oDoc->formatOutput = false;
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$oDoc->preserveWhiteSpace = false;
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@$oDoc->loadHTML('<?xml version="1.0" encoding="utf-8"?>'.
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'<html '.\trim($sHtmlAttrs).'><head>'.
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'<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head>'.
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'<body '.\trim($sBodyAttrs).'>'.\MailSo\Base\Utils::Utf8Clear($sHtml).'</body></html>');
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$oDoc->normalizeDocument();
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if (\MailSo\Base\Utils::FunctionCallable('libxml_clear_errors'))
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{
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\libxml_clear_errors();
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}
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if (\MailSo\Base\Utils::FunctionCallable('libxml_use_internal_errors'))
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{
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\libxml_use_internal_errors($bState);
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}
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$sHtml = '';
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$oBody = $oDoc->getElementsByTagName('body')->item(0);
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$aRemoveTags = array(
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'svg', 'link', 'base', 'meta', 'title', 'x-script', 'script', 'bgsound', 'keygen', 'source',
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'object', 'embed', 'applet', 'mocha', 'iframe', 'frame', 'frameset', 'video', 'audio', 'area', 'map',
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'head', 'style'
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);
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$aRemove = array();
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$sIdRight = \md5(\microtime());
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$aNodes = $oBody->getElementsByTagName('*');
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foreach ($aNodes as /* @var $oElement \DOMElement */ $oElement)
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{
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$sTagNameLower = \strtolower($oElement->nodeName);
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if (\in_array($sTagNameLower, $aRemoveTags))
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{
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$aRemove[] = $oElement;
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continue;
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}
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// images
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if ($oElement->hasAttribute('data-x-src-broken') || $oElement->hasAttribute('data-x-src-hidden')) {
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$aRemove[] = $oElement;
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continue;
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}
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if ($oElement->hasAttribute('data-x-src-cid')) {
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$sCid = $oElement->getAttribute('data-x-src-cid');
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$oElement->removeAttribute('data-x-src-cid');
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if (!empty($sCid)) {
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$aFoundCids[] = $sCid;
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$oElement->setAttribute('src', 'cid:'.$sCid);
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}
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}
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if ($oElement->hasAttribute('data-x-src')) {
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$oElement->setAttribute('src', $oElement->getAttribute('data-x-src'));
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$oElement->removeAttribute('data-x-src');
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}
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// style attribute images
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$aCid = array();
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if ($oElement->hasAttribute('data-x-style-url')) {
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$aCid = \array_merge($aCid, \json_decode($oElement->getAttribute('data-x-style-url'), true));
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$oElement->removeAttribute('data-x-style-url');
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}
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if ($aCid) {
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foreach ($aCid as $sCidName => $sCid) {
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$sCidName = \strtolower(\preg_replace('/([A-Z])/', '-\1', $sCidName));
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if (\in_array($sCidName, array('background-image', 'list-style-image', 'content')))
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{
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$sStyles = $oElement->hasAttribute('style')
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? \trim(\trim($oElement->getAttribute('style')), ';')
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: '';
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$sBack = $sCidName.':url(cid:'.$sCid.')';
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$sStyles = \preg_replace('/'.\preg_quote($sCidName).'\\s*:\\s*[^;]+/i', $sBack, $sStyles);
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if (false === \strpos($sStyles, $sBack))
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{
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$sStyles .= ";{$sBack}";
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}
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$oElement->setAttribute('style', \trim($sStyles, ';'));
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$aFoundCids[] = $sCid;
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}
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}
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}
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// Remove all remaining data-* attributes
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if ($oElement->hasAttributes()) {
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foreach ($oElement->attributes as $oAttr) {
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if ('data-' === \substr(\strtolower($oAttr->nodeName), 0, 5))
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{
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$oElement->removeAttribute($oAttr->nodeName);
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}
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}
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}
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if ('img' === $sTagNameLower)
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{
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$sSrc = $oElement->getAttribute('src');
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if ('data:image/' === \strtolower(\substr($sSrc, 0, 11)))
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{
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$sHash = \md5($sSrc) . '@' . $sIdRight;
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$aFoundDataURL[$sHash] = $sSrc;
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$oElement->setAttribute('src', 'cid:'.$sHash);
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}
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}
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}
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foreach ($aRemove as /* @var $oElement \DOMElement */ $oElement)
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{
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if (isset($oElement->parentNode))
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{
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@$oElement->parentNode->removeChild($oElement);
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}
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}
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return '<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head>'
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. $oDoc->saveHTML($oBody) . '</html>';
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}
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public static function ConvertPlainToHtml(string $sText, bool $bLinksWithTargetBlank = true) : string
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{
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$sText = \trim($sText);
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if (!\strlen($sText))
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{
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return '';
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}
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$sText = (new \MailSo\Base\LinkFinder)
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->Text($sText)
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->UseDefaultWrappers($bLinksWithTargetBlank)
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->CompileText()
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;
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$sText = \str_replace("\r", '', $sText);
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$aText = \explode("\n", $sText);
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unset($sText);
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$bIn = false;
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$bDo = true;
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do
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{
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$bDo = false;
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$aNextText = array();
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foreach ($aText as $sTextLine)
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{
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$bStart = 0 === \strpos(\ltrim($sTextLine), '>');
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if ($bStart && !$bIn)
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{
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$bDo = true;
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$bIn = true;
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$aNextText[] = '<blockquote>';
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$aNextText[] = \substr(\ltrim($sTextLine), 4);
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}
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else if (!$bStart && $bIn)
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{
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$bIn = false;
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$aNextText[] = '</blockquote>';
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$aNextText[] = $sTextLine;
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}
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else if ($bStart && $bIn)
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{
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$aNextText[] = \substr(\ltrim($sTextLine), 4);
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}
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else
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{
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$aNextText[] = $sTextLine;
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}
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}
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if ($bIn)
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{
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$bIn = false;
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$aNextText[] = '</blockquote>';
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}
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$aText = $aNextText;
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}
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while ($bDo);
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$sText = \join("\n", $aText);
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unset($aText);
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$sText = \preg_replace('/[\n][ ]+/', "\n", $sText);
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// $sText = \preg_replace('/[\s]+([\s])/', '\\1', $sText);
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$sText = \preg_replace('/<blockquote>[\s]+/i', '<blockquote>', $sText);
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$sText = \preg_replace('/[\s]+<\/blockquote>/i', '</blockquote>', $sText);
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$sText = \preg_replace('/<\/blockquote>([\n]{0,2})<blockquote>/i', '\\1', $sText);
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$sText = \preg_replace('/[\n]{3,}/', "\n\n", $sText);
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$sText = \strtr($sText, array(
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"\t" => "\xC2\xA0\xC2\xA0\xC2\xA0\xC2\xA0",
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' ' => "\xC2\xA0\xC2\xA0"
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));
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return \nl2br($sText);
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}
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public static function ConvertHtmlToPlain(string $sText) : string
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{
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$sText = \MailSo\Base\Utils::StripSpaces($sText);
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$sText = \preg_replace_callback('/<h([1-6])[^>]*>/', function($m) {
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return "\n\n" . \str_repeat('#', $m[1]) . ' ';
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}, $sText);
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$sText = \preg_replace(array(
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"/\r/",
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"/[\n\t]+/",
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'/<script[^>]*>.*?<\/script>|<style[^>]*>.*?<\/style>|<title[^>]*>.*?<\/title>/i',
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'/<\/h[1-6]>/i',
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'/<p[^>]*>/i',
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'/<br[^>]*>/i',
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'/<b[^>]*>(.+?)<\/b>/i',
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'/<i[^>]*>(.+?)<\/i>/i',
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'/<ul[^>]*>|<\/ul>|<ol[^>]*>|<\/ol>/i',
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'/<li[^>]*>/i',
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'/<a[^>]*href="([^"]+)"[^>]*>(.+?)<\/a>/i',
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'/<hr[^>]*>/i',
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'/(<table[^>]*>|<\/table>)/i',
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'/(<tr[^>]*>|<\/tr>)/i',
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'/<td[^>]*>(.+?)<\/td>/i',
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'/<th[^>]*>(.+?)<\/th>/i',
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), array(
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'',
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' ',
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'',
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"\n\n",
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"\n\n\t",
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"\n",
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'\\1',
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'\\1',
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"\n\n",
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"\n\t* ",
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'\\2 (\\1)',
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"\n------------------------------------\n",
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"\n",
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"\n",
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"\t\\1\n",
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"\t\\1\n"
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), $sText);
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$sText = \str_ireplace('<div>',"\n<div>", $sText);
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$sText = \strip_tags($sText, '');
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$sText = \preg_replace("/\n\\s+\n/", "\n", $sText);
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$sText = \preg_replace("/[\n]{3,}/", "\n\n", $sText);
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$sText = \html_entity_decode($sText, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, 'UTF-8');
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return \trim($sText);
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}
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}
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