mirror of
https://gitee.com/zoujingli/ThinkAdmin.git
synced 2025-08-24 22:09:45 +08:00
1497 lines
40 KiB
PHP
1497 lines
40 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | Library for ThinkAdmin
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// +----------------------------------------------------------------------
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// | 此文件版权所有归原作者所有，在此特别提出感谢 ！！！！！！！！！！！！！！！
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// +----------------------------------------------------------------------
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// | 以下源代码来自 https://github.com/erusev/parsedown ，基于 MIT 协议开源
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// | 为减少 Composer 组件数量优化加载速度，直接将源码复制于此，在此表示感谢原作者 ！
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// +----------------------------------------------------------------------
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namespace think\admin\extend;
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/**
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* Markdown 文档解析服务
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* Class Parsedown
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* @package think\admin\extend
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*/
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class Parsedown
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{
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const version = '1.7.4';
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function text($text)
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{
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# make sure no definitions are set
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$this->DefinitionData = [];
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# standardize line breaks
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$text = str_replace(["\r\n", "\r"], "\n", $text);
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# remove surrounding line breaks
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$text = trim($text, "\n");
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# split text into lines
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$lines = explode("\n", $text);
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# iterate through lines to identify blocks
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$markup = $this->lines($lines);
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# trim line breaks
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$markup = trim($markup, "\n");
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return $markup;
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}
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#
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# Setters
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#
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function setBreaksEnabled($breaksEnabled)
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{
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$this->breaksEnabled = $breaksEnabled;
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return $this;
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}
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protected $breaksEnabled;
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function setMarkupEscaped($markupEscaped)
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{
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$this->markupEscaped = $markupEscaped;
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return $this;
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}
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protected $markupEscaped;
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function setUrlsLinked($urlsLinked)
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{
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$this->urlsLinked = $urlsLinked;
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return $this;
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}
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protected $urlsLinked = true;
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function setSafeMode($safeMode)
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{
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$this->safeMode = (bool)$safeMode;
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return $this;
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}
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protected $safeMode;
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protected $safeLinksWhitelist = [
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'http://',
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'https://',
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'ftp://',
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'ftps://',
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'mailto:',
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'data:image/png;base64,',
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'data:image/gif;base64,',
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'data:image/jpeg;base64,',
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'irc:',
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'ircs:',
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'git:',
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'ssh:',
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'news:',
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'steam:',
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];
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#
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# Lines
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#
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protected $BlockTypes = [
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'#' => ['Header'],
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'*' => ['Rule', 'List'],
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'+' => ['List'],
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'-' => ['SetextHeader', 'Table', 'Rule', 'List'],
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'0' => ['List'],
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'1' => ['List'],
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'2' => ['List'],
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'3' => ['List'],
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'4' => ['List'],
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'5' => ['List'],
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'6' => ['List'],
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'7' => ['List'],
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'8' => ['List'],
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'9' => ['List'],
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':' => ['Table'],
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'<' => ['Comment', 'Markup'],
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'=' => ['SetextHeader'],
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'>' => ['Quote'],
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'[' => ['Reference'],
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'_' => ['Rule'],
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'`' => ['FencedCode'],
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'|' => ['Table'],
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'~' => ['FencedCode'],
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];
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# ~
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protected $unmarkedBlockTypes = ['Code'];
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#
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# Blocks
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#
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protected function lines(array $lines)
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{
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$CurrentBlock = null;
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foreach ($lines as $line) {
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if (chop($line) === '') {
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if (isset($CurrentBlock)) {
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$CurrentBlock['interrupted'] = true;
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}
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continue;
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}
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if (strpos($line, "\t") !== false) {
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$parts = explode("\t", $line);
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$line = $parts[0];
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unset($parts[0]);
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foreach ($parts as $part) {
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$shortage = 4 - mb_strlen($line, 'utf-8') % 4;
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$line .= str_repeat(' ', $shortage);
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$line .= $part;
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}
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}
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$indent = 0;
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while (isset($line[$indent]) and $line[$indent] === ' ') {
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$indent++;
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}
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$text = $indent > 0 ? substr($line, $indent) : $line;
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$Line = ['body' => $line, 'indent' => $indent, 'text' => $text];
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if (isset($CurrentBlock['continuable'])) {
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$Block = $this->{'block' . $CurrentBlock['type'] . 'Continue'}($Line, $CurrentBlock);
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if (isset($Block)) {
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$CurrentBlock = $Block;
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continue;
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} else {
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if ($this->isBlockCompletable($CurrentBlock['type'])) {
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$CurrentBlock = $this->{'block' . $CurrentBlock['type'] . 'Complete'}($CurrentBlock);
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}
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}
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}
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$marker = $text[0];
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$blockTypes = $this->unmarkedBlockTypes;
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if (isset($this->BlockTypes[$marker])) {
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foreach ($this->BlockTypes[$marker] as $blockType) {
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$blockTypes [] = $blockType;
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}
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}
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foreach ($blockTypes as $blockType) {
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$Block = $this->{'block' . $blockType}($Line, $CurrentBlock);
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if (isset($Block)) {
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$Block['type'] = $blockType;
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if (!isset($Block['identified'])) {
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$Blocks [] = $CurrentBlock;
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$Block['identified'] = true;
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}
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if ($this->isBlockContinuable($blockType)) {
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$Block['continuable'] = true;
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}
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$CurrentBlock = $Block;
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continue 2;
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}
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}
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# ~
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if (isset($CurrentBlock) and !isset($CurrentBlock['type']) and !isset($CurrentBlock['interrupted'])) {
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$CurrentBlock['element']['text'] .= "\n" . $text;
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} else {
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$Blocks [] = $CurrentBlock;
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$CurrentBlock = $this->paragraph($Line);
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$CurrentBlock['identified'] = true;
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}
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}
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if (isset($CurrentBlock['continuable']) and $this->isBlockCompletable($CurrentBlock['type'])) {
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$CurrentBlock = $this->{'block' . $CurrentBlock['type'] . 'Complete'}($CurrentBlock);
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}
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$Blocks [] = $CurrentBlock;
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unset($Blocks[0]);
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# ~
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$markup = '';
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foreach ($Blocks as $Block) {
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if (isset($Block['hidden'])) {
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continue;
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}
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$markup .= "\n";
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$markup .= isset($Block['markup']) ? $Block['markup'] : $this->element($Block['element']);
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}
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$markup .= "\n";
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# ~
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return $markup;
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}
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protected function isBlockContinuable($Type)
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{
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return method_exists($this, 'block' . $Type . 'Continue');
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}
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protected function isBlockCompletable($Type)
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{
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return method_exists($this, 'block' . $Type . 'Complete');
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}
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#
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# Code
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protected function blockCode($Line, $Block = null)
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{
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if (isset($Block) and !isset($Block['type']) and !isset($Block['interrupted'])) {
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return;
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}
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if ($Line['indent'] >= 4) {
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$text = substr($Line['body'], 4);
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$Block = [
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'element' => [
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'name' => 'pre',
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'handler' => 'element',
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'text' => [
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'name' => 'code',
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'text' => $text,
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],
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],
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];
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return $Block;
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}
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}
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protected function blockCodeContinue($Line, $Block)
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{
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if ($Line['indent'] >= 4) {
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if (isset($Block['interrupted'])) {
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$Block['element']['text']['text'] .= "\n";
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unset($Block['interrupted']);
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}
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$Block['element']['text']['text'] .= "\n";
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$text = substr($Line['body'], 4);
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$Block['element']['text']['text'] .= $text;
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return $Block;
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}
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}
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protected function blockCodeComplete($Block)
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{
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$text = $Block['element']['text']['text'];
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$Block['element']['text']['text'] = $text;
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return $Block;
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}
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#
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# Comment
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protected function blockComment($Line)
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{
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if ($this->markupEscaped or $this->safeMode) {
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return;
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}
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if (isset($Line['text'][3]) and $Line['text'][3] === '-' and $Line['text'][2] === '-' and $Line['text'][1] === '!') {
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$Block = [
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'markup' => $Line['body'],
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];
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if (preg_match('/-->$/', $Line['text'])) {
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$Block['closed'] = true;
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}
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return $Block;
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}
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}
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protected function blockCommentContinue($Line, array $Block)
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{
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if (isset($Block['closed'])) {
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return;
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}
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$Block['markup'] .= "\n" . $Line['body'];
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if (preg_match('/-->$/', $Line['text'])) {
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$Block['closed'] = true;
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}
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return $Block;
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}
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#
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# Fenced Code
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protected function blockFencedCode($Line)
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{
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if (preg_match('/^[' . $Line['text'][0] . ']{3,}[ ]*([^`]+)?[ ]*$/', $Line['text'], $matches)) {
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$Element = [
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'name' => 'code',
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'text' => '',
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];
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if (isset($matches[1])) {
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/**
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* https://www.w3.org/TR/2011/WD-html5-20110525/elements.html#classes
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* Every HTML element may have a class attribute specified.
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* The attribute, if specified, must have a value that is a set
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* of space-separated tokens representing the various classes
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* that the element belongs to.
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* [...]
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* The space characters, for the purposes of this specification,
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* are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab),
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* U+000A LINE FEED (LF), U+000C FORM FEED (FF), and
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* U+000D CARRIAGE RETURN (CR).
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*/
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$language = substr($matches[1], 0, strcspn($matches[1], " \t\n\f\r"));
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$class = 'language-' . $language;
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$Element['attributes'] = [
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'class' => $class,
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];
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}
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$Block = [
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'char' => $Line['text'][0],
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'element' => [
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'name' => 'pre',
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'handler' => 'element',
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'text' => $Element,
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],
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];
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return $Block;
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}
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}
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protected function blockFencedCodeContinue($Line, $Block)
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{
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if (isset($Block['complete'])) {
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return;
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}
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if (isset($Block['interrupted'])) {
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$Block['element']['text']['text'] .= "\n";
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unset($Block['interrupted']);
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}
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if (preg_match('/^' . $Block['char'] . '{3,}[ ]*$/', $Line['text'])) {
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$Block['element']['text']['text'] = substr($Block['element']['text']['text'], 1);
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$Block['complete'] = true;
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return $Block;
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}
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$Block['element']['text']['text'] .= "\n" . $Line['body'];
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return $Block;
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}
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protected function blockFencedCodeComplete($Block)
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{
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$text = $Block['element']['text']['text'];
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$Block['element']['text']['text'] = $text;
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return $Block;
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}
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#
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# Header
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protected function blockHeader($Line)
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{
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if (isset($Line['text'][1])) {
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$level = 1;
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while (isset($Line['text'][$level]) and $Line['text'][$level] === '#') {
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$level++;
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}
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if ($level > 6) {
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return;
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}
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$text = trim($Line['text'], '# ');
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$Block = [
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'element' => [
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'name' => 'h' . min(6, $level),
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'text' => $text,
|
||
'handler' => 'line',
|
||
],
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
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# List
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||
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protected function blockList($Line)
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{
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||
[$name, $pattern] = $Line['text'][0] <= '-' ? ['ul', '[*+-]'] : ['ol', '[0-9]+[.]'];
|
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if (preg_match('/^(' . $pattern . '[ ]+)(.*)/', $Line['text'], $matches)) {
|
||
$Block = [
|
||
'indent' => $Line['indent'],
|
||
'pattern' => $pattern,
|
||
'element' => [
|
||
'name' => $name,
|
||
'handler' => 'elements',
|
||
],
|
||
];
|
||
|
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if ($name === 'ol') {
|
||
$listStart = stristr($matches[0], '.', true);
|
||
|
||
if ($listStart !== '1') {
|
||
$Block['element']['attributes'] = ['start' => $listStart];
|
||
}
|
||
}
|
||
|
||
$Block['li'] = [
|
||
'name' => 'li',
|
||
'handler' => 'li',
|
||
'text' => [
|
||
$matches[2],
|
||
],
|
||
];
|
||
|
||
$Block['element']['text'] [] = &$Block['li'];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
protected function blockListContinue($Line, array $Block)
|
||
{
|
||
if ($Block['indent'] === $Line['indent'] and preg_match('/^' . $Block['pattern'] . '(?:[ ]+(.*)|$)/', $Line['text'], $matches)) {
|
||
if (isset($Block['interrupted'])) {
|
||
$Block['li']['text'] [] = '';
|
||
|
||
$Block['loose'] = true;
|
||
|
||
unset($Block['interrupted']);
|
||
}
|
||
|
||
unset($Block['li']);
|
||
|
||
$text = isset($matches[1]) ? $matches[1] : '';
|
||
|
||
$Block['li'] = [
|
||
'name' => 'li',
|
||
'handler' => 'li',
|
||
'text' => [
|
||
$text,
|
||
],
|
||
];
|
||
|
||
$Block['element']['text'] [] = &$Block['li'];
|
||
|
||
return $Block;
|
||
}
|
||
|
||
if ($Line['text'][0] === '[' and $this->blockReference($Line)) {
|
||
return $Block;
|
||
}
|
||
|
||
if (!isset($Block['interrupted'])) {
|
||
$text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);
|
||
|
||
$Block['li']['text'] [] = $text;
|
||
|
||
return $Block;
|
||
}
|
||
|
||
if ($Line['indent'] > 0) {
|
||
$Block['li']['text'] [] = '';
|
||
|
||
$text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);
|
||
|
||
$Block['li']['text'] [] = $text;
|
||
|
||
unset($Block['interrupted']);
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
protected function blockListComplete(array $Block)
|
||
{
|
||
if (isset($Block['loose'])) {
|
||
foreach ($Block['element']['text'] as &$li) {
|
||
if (end($li['text']) !== '') {
|
||
$li['text'] [] = '';
|
||
}
|
||
}
|
||
}
|
||
|
||
return $Block;
|
||
}
|
||
|
||
#
|
||
# Quote
|
||
|
||
protected function blockQuote($Line)
|
||
{
|
||
if (preg_match('/^>[ ]?(.*)/', $Line['text'], $matches)) {
|
||
$Block = [
|
||
'element' => [
|
||
'name' => 'blockquote',
|
||
'handler' => 'lines',
|
||
'text' => (array)$matches[1],
|
||
],
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
protected function blockQuoteContinue($Line, array $Block)
|
||
{
|
||
if ($Line['text'][0] === '>' and preg_match('/^>[ ]?(.*)/', $Line['text'], $matches)) {
|
||
if (isset($Block['interrupted'])) {
|
||
$Block['element']['text'] [] = '';
|
||
|
||
unset($Block['interrupted']);
|
||
}
|
||
|
||
$Block['element']['text'] [] = $matches[1];
|
||
|
||
return $Block;
|
||
}
|
||
|
||
if (!isset($Block['interrupted'])) {
|
||
$Block['element']['text'] [] = $Line['text'];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
|
||
# Rule
|
||
|
||
protected function blockRule($Line)
|
||
{
|
||
if (preg_match('/^([' . $Line['text'][0] . '])([ ]*\1){2,}[ ]*$/', $Line['text'])) {
|
||
$Block = [
|
||
'element' => [
|
||
'name' => 'hr',
|
||
],
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
|
||
# Setext
|
||
|
||
protected function blockSetextHeader($Line, array $Block = null)
|
||
{
|
||
if (!isset($Block) or isset($Block['type']) or isset($Block['interrupted'])) {
|
||
return;
|
||
}
|
||
|
||
if (chop($Line['text'], $Line['text'][0]) === '') {
|
||
$Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
|
||
# Markup
|
||
|
||
protected function blockMarkup($Line)
|
||
{
|
||
if ($this->markupEscaped or $this->safeMode) {
|
||
return;
|
||
}
|
||
|
||
if (preg_match('/^<(\w[\w-]*)(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*(\/)?>/', $Line['text'], $matches)) {
|
||
$element = strtolower($matches[1]);
|
||
|
||
if (in_array($element, $this->textLevelElements)) {
|
||
return;
|
||
}
|
||
|
||
$Block = [
|
||
'name' => $matches[1],
|
||
'depth' => 0,
|
||
'markup' => $Line['text'],
|
||
];
|
||
|
||
$length = strlen($matches[0]);
|
||
|
||
$remainder = substr($Line['text'], $length);
|
||
|
||
if (trim($remainder) === '') {
|
||
if (isset($matches[2]) or in_array($matches[1], $this->voidElements)) {
|
||
$Block['closed'] = true;
|
||
|
||
$Block['void'] = true;
|
||
}
|
||
} else {
|
||
if (isset($matches[2]) or in_array($matches[1], $this->voidElements)) {
|
||
return;
|
||
}
|
||
|
||
if (preg_match('/<\/' . $matches[1] . '>[ ]*$/i', $remainder)) {
|
||
$Block['closed'] = true;
|
||
}
|
||
}
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
protected function blockMarkupContinue($Line, array $Block)
|
||
{
|
||
if (isset($Block['closed'])) {
|
||
return;
|
||
}
|
||
|
||
if (preg_match('/^<' . $Block['name'] . '(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*>/i', $Line['text'])) # open
|
||
{
|
||
$Block['depth']++;
|
||
}
|
||
|
||
if (preg_match('/(.*?)<\/' . $Block['name'] . '>[ ]*$/i', $Line['text'], $matches)) # close
|
||
{
|
||
if ($Block['depth'] > 0) {
|
||
$Block['depth']--;
|
||
} else {
|
||
$Block['closed'] = true;
|
||
}
|
||
}
|
||
|
||
if (isset($Block['interrupted'])) {
|
||
$Block['markup'] .= "\n";
|
||
|
||
unset($Block['interrupted']);
|
||
}
|
||
|
||
$Block['markup'] .= "\n" . $Line['body'];
|
||
|
||
return $Block;
|
||
}
|
||
|
||
#
|
||
# Reference
|
||
|
||
protected function blockReference($Line)
|
||
{
|
||
if (preg_match('/^\[(.+?)\]:[ ]*<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*$/', $Line['text'], $matches)) {
|
||
$id = strtolower($matches[1]);
|
||
|
||
$Data = [
|
||
'url' => $matches[2],
|
||
'title' => null,
|
||
];
|
||
|
||
if (isset($matches[3])) {
|
||
$Data['title'] = $matches[3];
|
||
}
|
||
|
||
$this->DefinitionData['Reference'][$id] = $Data;
|
||
|
||
$Block = [
|
||
'hidden' => true,
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
|
||
# Table
|
||
|
||
protected function blockTable($Line, array $Block = null)
|
||
{
|
||
if (!isset($Block) or isset($Block['type']) or isset($Block['interrupted'])) {
|
||
return;
|
||
}
|
||
|
||
if (strpos($Block['element']['text'], '|') !== false and chop($Line['text'], ' -:|') === '') {
|
||
$alignments = [];
|
||
|
||
$divider = $Line['text'];
|
||
|
||
$divider = trim($divider);
|
||
$divider = trim($divider, '|');
|
||
|
||
$dividerCells = explode('|', $divider);
|
||
|
||
foreach ($dividerCells as $dividerCell) {
|
||
$dividerCell = trim($dividerCell);
|
||
|
||
if ($dividerCell === '') {
|
||
continue;
|
||
}
|
||
|
||
$alignment = null;
|
||
|
||
if ($dividerCell[0] === ':') {
|
||
$alignment = 'left';
|
||
}
|
||
|
||
if (substr($dividerCell, -1) === ':') {
|
||
$alignment = $alignment === 'left' ? 'center' : 'right';
|
||
}
|
||
|
||
$alignments [] = $alignment;
|
||
}
|
||
|
||
# ~
|
||
|
||
$HeaderElements = [];
|
||
|
||
$header = $Block['element']['text'];
|
||
|
||
$header = trim($header);
|
||
$header = trim($header, '|');
|
||
|
||
$headerCells = explode('|', $header);
|
||
|
||
foreach ($headerCells as $index => $headerCell) {
|
||
$headerCell = trim($headerCell);
|
||
|
||
$HeaderElement = [
|
||
'name' => 'th',
|
||
'text' => $headerCell,
|
||
'handler' => 'line',
|
||
];
|
||
|
||
if (isset($alignments[$index])) {
|
||
$alignment = $alignments[$index];
|
||
|
||
$HeaderElement['attributes'] = [
|
||
'style' => 'text-align: ' . $alignment . ';',
|
||
];
|
||
}
|
||
|
||
$HeaderElements [] = $HeaderElement;
|
||
}
|
||
|
||
# ~
|
||
|
||
$Block = [
|
||
'alignments' => $alignments,
|
||
'identified' => true,
|
||
'element' => [
|
||
'name' => 'table',
|
||
'handler' => 'elements',
|
||
],
|
||
];
|
||
|
||
$Block['element']['text'] [] = [
|
||
'name' => 'thead',
|
||
'handler' => 'elements',
|
||
];
|
||
|
||
$Block['element']['text'] [] = [
|
||
'name' => 'tbody',
|
||
'handler' => 'elements',
|
||
'text' => [],
|
||
];
|
||
|
||
$Block['element']['text'][0]['text'] [] = [
|
||
'name' => 'tr',
|
||
'handler' => 'elements',
|
||
'text' => $HeaderElements,
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
protected function blockTableContinue($Line, array $Block)
|
||
{
|
||
if (isset($Block['interrupted'])) {
|
||
return;
|
||
}
|
||
|
||
if ($Line['text'][0] === '|' or strpos($Line['text'], '|')) {
|
||
$Elements = [];
|
||
|
||
$row = $Line['text'];
|
||
|
||
$row = trim($row);
|
||
$row = trim($row, '|');
|
||
|
||
preg_match_all('/(?:(\\\\[|])|[^|`]|`[^`]+`|`)+/', $row, $matches);
|
||
|
||
foreach ($matches[0] as $index => $cell) {
|
||
$cell = trim($cell);
|
||
|
||
$Element = [
|
||
'name' => 'td',
|
||
'handler' => 'line',
|
||
'text' => $cell,
|
||
];
|
||
|
||
if (isset($Block['alignments'][$index])) {
|
||
$Element['attributes'] = [
|
||
'style' => 'text-align: ' . $Block['alignments'][$index] . ';',
|
||
];
|
||
}
|
||
|
||
$Elements [] = $Element;
|
||
}
|
||
|
||
$Element = [
|
||
'name' => 'tr',
|
||
'handler' => 'elements',
|
||
'text' => $Elements,
|
||
];
|
||
|
||
$Block['element']['text'][1]['text'] [] = $Element;
|
||
|
||
return $Block;
|
||
}
|
||
}
|
||
|
||
#
|
||
# ~
|
||
#
|
||
|
||
protected function paragraph($Line)
|
||
{
|
||
$Block = [
|
||
'element' => [
|
||
'name' => 'p',
|
||
'text' => $Line['text'],
|
||
'handler' => 'line',
|
||
],
|
||
];
|
||
|
||
return $Block;
|
||
}
|
||
|
||
#
|
||
# Inline Elements
|
||
#
|
||
|
||
protected $InlineTypes = [
|
||
'"' => ['SpecialCharacter'],
|
||
'!' => ['Image'],
|
||
'&' => ['SpecialCharacter'],
|
||
'*' => ['Emphasis'],
|
||
':' => ['Url'],
|
||
'<' => ['UrlTag', 'EmailTag', 'Markup', 'SpecialCharacter'],
|
||
'>' => ['SpecialCharacter'],
|
||
'[' => ['Link'],
|
||
'_' => ['Emphasis'],
|
||
'`' => ['Code'],
|
||
'~' => ['Strikethrough'],
|
||
'\\' => ['EscapeSequence'],
|
||
];
|
||
|
||
# ~
|
||
|
||
protected $inlineMarkerList = '!"*_&[:<>`~\\';
|
||
|
||
#
|
||
# ~
|
||
#
|
||
|
||
public function line($text, $nonNestables = [])
|
||
{
|
||
$markup = '';
|
||
|
||
# $excerpt is based on the first occurrence of a marker
|
||
|
||
while ($excerpt = strpbrk($text, $this->inlineMarkerList)) {
|
||
$marker = $excerpt[0];
|
||
|
||
$markerPosition = strpos($text, $marker);
|
||
|
||
$Excerpt = ['text' => $excerpt, 'context' => $text];
|
||
|
||
foreach ($this->InlineTypes[$marker] as $inlineType) {
|
||
# check to see if the current inline type is nestable in the current context
|
||
|
||
if (!empty($nonNestables) and in_array($inlineType, $nonNestables)) {
|
||
continue;
|
||
}
|
||
|
||
$Inline = $this->{'inline' . $inlineType}($Excerpt);
|
||
|
||
if (!isset($Inline)) {
|
||
continue;
|
||
}
|
||
|
||
# makes sure that the inline belongs to "our" marker
|
||
|
||
if (isset($Inline['position']) and $Inline['position'] > $markerPosition) {
|
||
continue;
|
||
}
|
||
|
||
# sets a default inline position
|
||
|
||
if (!isset($Inline['position'])) {
|
||
$Inline['position'] = $markerPosition;
|
||
}
|
||
|
||
# cause the new element to 'inherit' our non nestables
|
||
|
||
foreach ($nonNestables as $non_nestable) {
|
||
$Inline['element']['nonNestables'][] = $non_nestable;
|
||
}
|
||
|
||
# the text that comes before the inline
|
||
$unmarkedText = substr($text, 0, $Inline['position']);
|
||
|
||
# compile the unmarked text
|
||
$markup .= $this->unmarkedText($unmarkedText);
|
||
|
||
# compile the inline
|
||
$markup .= isset($Inline['markup']) ? $Inline['markup'] : $this->element($Inline['element']);
|
||
|
||
# remove the examined text
|
||
$text = substr($text, $Inline['position'] + $Inline['extent']);
|
||
|
||
continue 2;
|
||
}
|
||
|
||
# the marker does not belong to an inline
|
||
|
||
$unmarkedText = substr($text, 0, $markerPosition + 1);
|
||
|
||
$markup .= $this->unmarkedText($unmarkedText);
|
||
|
||
$text = substr($text, $markerPosition + 1);
|
||
}
|
||
|
||
$markup .= $this->unmarkedText($text);
|
||
|
||
return $markup;
|
||
}
|
||
|
||
#
|
||
# ~
|
||
#
|
||
|
||
protected function inlineCode($Excerpt)
|
||
{
|
||
$marker = $Excerpt['text'][0];
|
||
|
||
if (preg_match('/^(' . $marker . '+)[ ]*(.+?)[ ]*(?<!' . $marker . ')\1(?!' . $marker . ')/s', $Excerpt['text'], $matches)) {
|
||
$text = $matches[2];
|
||
$text = preg_replace("/[ ]*\n/", ' ', $text);
|
||
|
||
return [
|
||
'extent' => strlen($matches[0]),
|
||
'element' => [
|
||
'name' => 'code',
|
||
'text' => $text,
|
||
],
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineEmailTag($Excerpt)
|
||
{
|
||
if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<((mailto:)?\S+?@\S+?)>/i', $Excerpt['text'], $matches)) {
|
||
$url = $matches[1];
|
||
|
||
if (!isset($matches[2])) {
|
||
$url = 'mailto:' . $url;
|
||
}
|
||
|
||
return [
|
||
'extent' => strlen($matches[0]),
|
||
'element' => [
|
||
'name' => 'a',
|
||
'text' => $matches[1],
|
||
'attributes' => [
|
||
'href' => $url,
|
||
],
|
||
],
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineEmphasis($Excerpt)
|
||
{
|
||
if (!isset($Excerpt['text'][1])) {
|
||
return;
|
||
}
|
||
|
||
$marker = $Excerpt['text'][0];
|
||
|
||
if ($Excerpt['text'][1] === $marker and preg_match($this->StrongRegex[$marker], $Excerpt['text'], $matches)) {
|
||
$emphasis = 'strong';
|
||
} elseif (preg_match($this->EmRegex[$marker], $Excerpt['text'], $matches)) {
|
||
$emphasis = 'em';
|
||
} else {
|
||
return;
|
||
}
|
||
|
||
return [
|
||
'extent' => strlen($matches[0]),
|
||
'element' => [
|
||
'name' => $emphasis,
|
||
'handler' => 'line',
|
||
'text' => $matches[1],
|
||
],
|
||
];
|
||
}
|
||
|
||
protected function inlineEscapeSequence($Excerpt)
|
||
{
|
||
if (isset($Excerpt['text'][1]) and in_array($Excerpt['text'][1], $this->specialCharacters)) {
|
||
return [
|
||
'markup' => $Excerpt['text'][1],
|
||
'extent' => 2,
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineImage($Excerpt)
|
||
{
|
||
if (!isset($Excerpt['text'][1]) or $Excerpt['text'][1] !== '[') {
|
||
return;
|
||
}
|
||
|
||
$Excerpt['text'] = substr($Excerpt['text'], 1);
|
||
|
||
$Link = $this->inlineLink($Excerpt);
|
||
|
||
if ($Link === null) {
|
||
return;
|
||
}
|
||
|
||
$Inline = [
|
||
'extent' => $Link['extent'] + 1,
|
||
'element' => [
|
||
'name' => 'img',
|
||
'attributes' => [
|
||
'src' => $Link['element']['attributes']['href'],
|
||
'alt' => $Link['element']['text'],
|
||
],
|
||
],
|
||
];
|
||
|
||
$Inline['element']['attributes'] += $Link['element']['attributes'];
|
||
|
||
unset($Inline['element']['attributes']['href']);
|
||
|
||
return $Inline;
|
||
}
|
||
|
||
protected function inlineLink($Excerpt)
|
||
{
|
||
$Element = [
|
||
'name' => 'a',
|
||
'handler' => 'line',
|
||
'nonNestables' => ['Url', 'Link'],
|
||
'text' => null,
|
||
'attributes' => [
|
||
'href' => null,
|
||
'title' => null,
|
||
],
|
||
];
|
||
|
||
$extent = 0;
|
||
|
||
$remainder = $Excerpt['text'];
|
||
|
||
if (preg_match('/\[((?:[^][]++|(?R))*+)\]/', $remainder, $matches)) {
|
||
$Element['text'] = $matches[1];
|
||
|
||
$extent += strlen($matches[0]);
|
||
|
||
$remainder = substr($remainder, $extent);
|
||
} else {
|
||
return;
|
||
}
|
||
|
||
if (preg_match('/^[(]\s*+((?:[^ ()]++|[(][^ )]+[)])++)(?:[ ]+("[^"]*"|\'[^\']*\'))?\s*[)]/', $remainder, $matches)) {
|
||
$Element['attributes']['href'] = $matches[1];
|
||
|
||
if (isset($matches[2])) {
|
||
$Element['attributes']['title'] = substr($matches[2], 1, -1);
|
||
}
|
||
|
||
$extent += strlen($matches[0]);
|
||
} else {
|
||
if (preg_match('/^\s*\[(.*?)\]/', $remainder, $matches)) {
|
||
$definition = strlen($matches[1]) ? $matches[1] : $Element['text'];
|
||
$definition = strtolower($definition);
|
||
|
||
$extent += strlen($matches[0]);
|
||
} else {
|
||
$definition = strtolower($Element['text']);
|
||
}
|
||
|
||
if (!isset($this->DefinitionData['Reference'][$definition])) {
|
||
return;
|
||
}
|
||
|
||
$Definition = $this->DefinitionData['Reference'][$definition];
|
||
|
||
$Element['attributes']['href'] = $Definition['url'];
|
||
$Element['attributes']['title'] = $Definition['title'];
|
||
}
|
||
|
||
return [
|
||
'extent' => $extent,
|
||
'element' => $Element,
|
||
];
|
||
}
|
||
|
||
protected function inlineMarkup($Excerpt)
|
||
{
|
||
if ($this->markupEscaped or $this->safeMode or strpos($Excerpt['text'], '>') === false) {
|
||
return;
|
||
}
|
||
|
||
if ($Excerpt['text'][1] === '/' and preg_match('/^<\/\w[\w-]*[ ]*>/s', $Excerpt['text'], $matches)) {
|
||
return [
|
||
'markup' => $matches[0],
|
||
'extent' => strlen($matches[0]),
|
||
];
|
||
}
|
||
|
||
if ($Excerpt['text'][1] === '!' and preg_match('/^<!---?[^>-](?:-?[^-])*-->/s', $Excerpt['text'], $matches)) {
|
||
return [
|
||
'markup' => $matches[0],
|
||
'extent' => strlen($matches[0]),
|
||
];
|
||
}
|
||
|
||
if ($Excerpt['text'][1] !== ' ' and preg_match('/^<\w[\w-]*(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*\/?>/s', $Excerpt['text'], $matches)) {
|
||
return [
|
||
'markup' => $matches[0],
|
||
'extent' => strlen($matches[0]),
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineSpecialCharacter($Excerpt)
|
||
{
|
||
if ($Excerpt['text'][0] === '&' and !preg_match('/^&#?\w+;/', $Excerpt['text'])) {
|
||
return [
|
||
'markup' => '&',
|
||
'extent' => 1,
|
||
];
|
||
}
|
||
|
||
$SpecialCharacter = ['>' => 'gt', '<' => 'lt', '"' => 'quot'];
|
||
|
||
if (isset($SpecialCharacter[$Excerpt['text'][0]])) {
|
||
return [
|
||
'markup' => '&' . $SpecialCharacter[$Excerpt['text'][0]] . ';',
|
||
'extent' => 1,
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineStrikethrough($Excerpt)
|
||
{
|
||
if (!isset($Excerpt['text'][1])) {
|
||
return;
|
||
}
|
||
|
||
if ($Excerpt['text'][1] === '~' and preg_match('/^~~(?=\S)(.+?)(?<=\S)~~/', $Excerpt['text'], $matches)) {
|
||
return [
|
||
'extent' => strlen($matches[0]),
|
||
'element' => [
|
||
'name' => 'del',
|
||
'text' => $matches[1],
|
||
'handler' => 'line',
|
||
],
|
||
];
|
||
}
|
||
}
|
||
|
||
protected function inlineUrl($Excerpt)
|
||
{
|
||
if ($this->urlsLinked !== true or !isset($Excerpt['text'][2]) or $Excerpt['text'][2] !== '/') {
|
||
return;
|
||
}
|
||
|
||
if (preg_match('/\bhttps?:[\/]{2}[^\s<]+\b\/*/ui', $Excerpt['context'], $matches, PREG_OFFSET_CAPTURE)) {
|
||
$url = $matches[0][0];
|
||
|
||
$Inline = [
|
||
'extent' => strlen($matches[0][0]),
|
||
'position' => $matches[0][1],
|
||
'element' => [
|
||
'name' => 'a',
|
||
'text' => $url,
|
||
'attributes' => [
|
||
'href' => $url,
|
||
],
|
||
],
|
||
];
|
||
|
||
return $Inline;
|
||
}
|
||
}
|
||
|
||
protected function inlineUrlTag($Excerpt)
|
||
{
|
||
if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<(\w+:\/{2}[^ >]+)>/i', $Excerpt['text'], $matches)) {
|
||
$url = $matches[1];
|
||
|
||
return [
|
||
'extent' => strlen($matches[0]),
|
||
'element' => [
|
||
'name' => 'a',
|
||
'text' => $url,
|
||
'attributes' => [
|
||
'href' => $url,
|
||
],
|
||
],
|
||
];
|
||
}
|
||
}
|
||
|
||
# ~
|
||
|
||
protected function unmarkedText($text)
|
||
{
|
||
if ($this->breaksEnabled) {
|
||
$text = preg_replace('/[ ]*\n/', "<br />\n", $text);
|
||
} else {
|
||
$text = preg_replace('/(?:[ ][ ]+|[ ]*\\\\)\n/', "<br />\n", $text);
|
||
$text = str_replace(" \n", "\n", $text);
|
||
}
|
||
|
||
return $text;
|
||
}
|
||
|
||
#
|
||
# Handlers
|
||
#
|
||
|
||
protected function element(array $Element)
|
||
{
|
||
if ($this->safeMode) {
|
||
$Element = $this->sanitiseElement($Element);
|
||
}
|
||
|
||
$markup = '<' . $Element['name'];
|
||
|
||
if (isset($Element['attributes'])) {
|
||
foreach ($Element['attributes'] as $name => $value) {
|
||
if ($value === null) {
|
||
continue;
|
||
}
|
||
|
||
$markup .= ' ' . $name . '="' . self::escape($value) . '"';
|
||
}
|
||
}
|
||
|
||
$permitRawHtml = false;
|
||
|
||
if (isset($Element['text'])) {
|
||
$text = $Element['text'];
|
||
}
|
||
// very strongly consider an alternative if you're writing an
|
||
// extension
|
||
elseif (isset($Element['rawHtml'])) {
|
||
$text = $Element['rawHtml'];
|
||
$allowRawHtmlInSafeMode = isset($Element['allowRawHtmlInSafeMode']) && $Element['allowRawHtmlInSafeMode'];
|
||
$permitRawHtml = !$this->safeMode || $allowRawHtmlInSafeMode;
|
||
}
|
||
|
||
if (isset($text)) {
|
||
$markup .= '>';
|
||
|
||
if (!isset($Element['nonNestables'])) {
|
||
$Element['nonNestables'] = [];
|
||
}
|
||
|
||
if (isset($Element['handler'])) {
|
||
$markup .= $this->{$Element['handler']}($text, $Element['nonNestables']);
|
||
} elseif (!$permitRawHtml) {
|
||
$markup .= self::escape($text, true);
|
||
} else {
|
||
$markup .= $text;
|
||
}
|
||
|
||
$markup .= '</' . $Element['name'] . '>';
|
||
} else {
|
||
$markup .= ' />';
|
||
}
|
||
|
||
return $markup;
|
||
}
|
||
|
||
protected function elements(array $Elements)
|
||
{
|
||
$markup = '';
|
||
|
||
foreach ($Elements as $Element) {
|
||
$markup .= "\n" . $this->element($Element);
|
||
}
|
||
|
||
$markup .= "\n";
|
||
|
||
return $markup;
|
||
}
|
||
|
||
# ~
|
||
|
||
protected function li($lines)
|
||
{
|
||
$markup = $this->lines($lines);
|
||
|
||
$trimmedMarkup = trim($markup);
|
||
|
||
if (!in_array('', $lines) and substr($trimmedMarkup, 0, 3) === '<p>') {
|
||
$markup = $trimmedMarkup;
|
||
$markup = substr($markup, 3);
|
||
|
||
$position = strpos($markup, "</p>");
|
||
|
||
$markup = substr_replace($markup, '', $position, 4);
|
||
}
|
||
|
||
return $markup;
|
||
}
|
||
|
||
#
|
||
# Deprecated Methods
|
||
#
|
||
|
||
function parse($text)
|
||
{
|
||
$markup = $this->text($text);
|
||
|
||
return $markup;
|
||
}
|
||
|
||
protected function sanitiseElement(array $Element)
|
||
{
|
||
static $goodAttribute = '/^[a-zA-Z0-9][a-zA-Z0-9-_]*+$/';
|
||
static $safeUrlNameToAtt = [
|
||
'a' => 'href',
|
||
'img' => 'src',
|
||
];
|
||
|
||
if (isset($safeUrlNameToAtt[$Element['name']])) {
|
||
$Element = $this->filterUnsafeUrlInAttribute($Element, $safeUrlNameToAtt[$Element['name']]);
|
||
}
|
||
|
||
if (!empty($Element['attributes'])) {
|
||
foreach ($Element['attributes'] as $att => $val) {
|
||
# filter out badly parsed attribute
|
||
if (!preg_match($goodAttribute, $att)) {
|
||
unset($Element['attributes'][$att]);
|
||
} # dump onevent attribute
|
||
elseif (self::striAtStart($att, 'on')) {
|
||
unset($Element['attributes'][$att]);
|
||
}
|
||
}
|
||
}
|
||
|
||
return $Element;
|
||
}
|
||
|
||
protected function filterUnsafeUrlInAttribute(array $Element, $attribute)
|
||
{
|
||
foreach ($this->safeLinksWhitelist as $scheme) {
|
||
if (self::striAtStart($Element['attributes'][$attribute], $scheme)) {
|
||
return $Element;
|
||
}
|
||
}
|
||
|
||
$Element['attributes'][$attribute] = str_replace(':', '%3A', $Element['attributes'][$attribute]);
|
||
|
||
return $Element;
|
||
}
|
||
|
||
#
|
||
# Static Methods
|
||
#
|
||
|
||
protected static function escape($text, $allowQuotes = false)
|
||
{
|
||
return htmlspecialchars($text, $allowQuotes ? ENT_NOQUOTES : ENT_QUOTES, 'UTF-8');
|
||
}
|
||
|
||
protected static function striAtStart($string, $needle)
|
||
{
|
||
$len = strlen($needle);
|
||
|
||
if ($len > strlen($string)) {
|
||
return false;
|
||
} else {
|
||
return strtolower(substr($string, 0, $len)) === strtolower($needle);
|
||
}
|
||
}
|
||
|
||
static function instance($name = 'default')
|
||
{
|
||
if (isset(self::$instances[$name])) {
|
||
return self::$instances[$name];
|
||
}
|
||
|
||
$instance = new static();
|
||
|
||
self::$instances[$name] = $instance;
|
||
|
||
return $instance;
|
||
}
|
||
|
||
private static $instances = [];
|
||
|
||
#
|
||
# Fields
|
||
#
|
||
|
||
protected $DefinitionData;
|
||
|
||
#
|
||
# Read-Only
|
||
|
||
protected $specialCharacters = [
|
||
'\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!', '|',
|
||
];
|
||
|
||
protected $StrongRegex = [
|
||
'*' => '/^[*]{2}((?:\\\\\*|[^*]|[*][^*]*[*])+?)[*]{2}(?![*])/s',
|
||
'_' => '/^__((?:\\\\_|[^_]|_[^_]*_)+?)__(?!_)/us',
|
||
];
|
||
|
||
protected $EmRegex = [
|
||
'*' => '/^[*]((?:\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s',
|
||
'_' => '/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us',
|
||
];
|
||
|
||
protected $regexHtmlAttribute = '[a-zA-Z_:][\w:.-]*(?:\s*=\s*(?:[^"\'=<>`\s]+|"[^"]*"|\'[^\']*\'))?';
|
||
|
||
protected $voidElements = ['area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source'];
|
||
|
||
protected $textLevelElements = [
|
||
'a', 'br', 'bdo', 'abbr', 'blink', 'nextid', 'acronym', 'basefont',
|
||
'b', 'em', 'big', 'cite', 'small', 'spacer', 'listing',
|
||
'i', 'rp', 'del', 'code', 'strike', 'marquee',
|
||
'q', 'rt', 'ins', 'font', 'strong',
|
||
's', 'tt', 'kbd', 'mark',
|
||
'u', 'xm', 'sub', 'nobr',
|
||
'sup', 'ruby',
|
||
'var', 'span',
|
||
'wbr', 'time',
|
||
];
|
||
} |