mirror of
https://gh.wpcy.net/https://github.com/Anyape/updatepulse-server.git
synced 2026-05-04 16:29:32 +08:00
919 lines
36 KiB
PHP
919 lines
36 KiB
PHP
<?php
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namespace Anyape;
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#
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#
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# Parsedown
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# http://parsedown.org
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#
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# (c) Emanuil Rusev
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# http://erusev.com
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#
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# For the full license information, view the LICENSE file that was distributed
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# with this source code.
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#
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#
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class Parsedown
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{
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# ~
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const version = '1.7.4';
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# ~
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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 = array();
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# standardize line breaks
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$text = \str_replace(array("\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 = array('http://', 'https://', 'ftp://', 'ftps://', 'mailto:', 'data:image/png;base64,', 'data:image/gif;base64,', 'data:image/jpeg;base64,', 'irc:', 'ircs:', 'git:', 'ssh:', 'news:', 'steam:');
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#
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# Lines
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#
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protected $BlockTypes = array('#' => array('Header'), '*' => array('Rule', 'List'), '+' => array('List'), '-' => array('SetextHeader', 'Table', 'Rule', 'List'), '0' => array('List'), '1' => array('List'), '2' => array('List'), '3' => array('List'), '4' => array('List'), '5' => array('List'), '6' => array('List'), '7' => array('List'), '8' => array('List'), '9' => array('List'), ':' => array('Table'), '<' => array('Comment', 'Markup'), '=' => array('SetextHeader'), '>' => array('Quote'), '[' => array('Reference'), '_' => array('Rule'), '`' => array('FencedCode'), '|' => array('Table'), '~' => array('FencedCode'));
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# ~
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protected $unmarkedBlockTypes = array('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) : $line;
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# ~
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$Line = array('body' => $line, 'indent' => $indent, 'text' => $text);
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# ~
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if (isset($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 = $Block;
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continue;
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} else if ($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 = $text[0];
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# ~
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$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[] = $blockType;
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}
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}
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#
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# ~
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foreach ($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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$CurrentBlock['identified'] = \true;
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}
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}
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# ~
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if (isset($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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# ~
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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 = array('element' => array('name' => 'pre', 'handler' => 'element', 'text' => array('name' => 'code', 'text' => $text)));
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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 = array('markup' => $Line['body']);
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if (\preg_match('/-->$/', $Line['text'])) {
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$Block['closed'] = \true;
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}
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return $Block;
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}
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}
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protected function blockCommentContinue($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 = array('name' => 'code', 'text' => '');
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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'] = array('class' => $class);
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}
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$Block = array('char' => $Line['text'][0], 'element' => array('name' => 'pre', 'handler' => 'element', 'text' => $Element));
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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 = array('element' => array('name' => 'h' . \min(6, $level), 'text' => $text, 'handler' => 'line'));
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return $Block;
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}
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}
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#
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# List
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protected function blockList($Line)
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{
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list($name, $pattern) = $Line['text'][0] <= '-' ? array('ul', '[*+-]') : array('ol', '[0-9]+[.]');
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if (\preg_match('/^(' . $pattern . '[ ]+)(.*)/', $Line['text'], $matches)) {
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$Block = array('indent' => $Line['indent'], 'pattern' => $pattern, 'element' => array('name' => $name, 'handler' => 'elements'));
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if ($name === 'ol') {
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$listStart = \stristr($matches[0], '.', \true);
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if ($listStart !== '1') {
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$Block['element']['attributes'] = array('start' => $listStart);
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}
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}
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$Block['li'] = array('name' => 'li', 'handler' => 'li', 'text' => array($matches[2]));
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$Block['element']['text'][] =& $Block['li'];
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return $Block;
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}
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}
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protected function blockListContinue($Line, array $Block)
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{
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if ($Block['indent'] === $Line['indent'] and \preg_match('/^' . $Block['pattern'] . '(?:[ ]+(.*)|$)/', $Line['text'], $matches)) {
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if (isset($Block['interrupted'])) {
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$Block['li']['text'][] = '';
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$Block['loose'] = \true;
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unset($Block['interrupted']);
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}
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unset($Block['li']);
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$text = isset($matches[1]) ? $matches[1] : '';
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$Block['li'] = array('name' => 'li', 'handler' => 'li', 'text' => array($text));
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$Block['element']['text'][] =& $Block['li'];
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return $Block;
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}
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if ($Line['text'][0] === '[' and $this->blockReference($Line)) {
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return $Block;
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}
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if (!isset($Block['interrupted'])) {
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$text = \preg_replace('/^[ ]{0,4}/', '', $Line['body']);
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$Block['li']['text'][] = $text;
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return $Block;
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}
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if ($Line['indent'] > 0) {
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$Block['li']['text'][] = '';
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$text = \preg_replace('/^[ ]{0,4}/', '', $Line['body']);
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$Block['li']['text'][] = $text;
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unset($Block['interrupted']);
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return $Block;
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}
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}
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protected function blockListComplete(array $Block)
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{
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if (isset($Block['loose'])) {
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foreach ($Block['element']['text'] as &$li) {
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if (\end($li['text']) !== '') {
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$li['text'][] = '';
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}
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}
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}
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return $Block;
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}
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#
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# Quote
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protected function blockQuote($Line)
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{
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if (\preg_match('/^>[ ]?(.*)/', $Line['text'], $matches)) {
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$Block = array('element' => array('name' => 'blockquote', 'handler' => 'lines', 'text' => (array) $matches[1]));
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return $Block;
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}
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}
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protected function blockQuoteContinue($Line, array $Block)
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{
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if ($Line['text'][0] === '>' and \preg_match('/^>[ ]?(.*)/', $Line['text'], $matches)) {
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if (isset($Block['interrupted'])) {
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$Block['element']['text'][] = '';
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unset($Block['interrupted']);
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}
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$Block['element']['text'][] = $matches[1];
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return $Block;
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}
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if (!isset($Block['interrupted'])) {
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$Block['element']['text'][] = $Line['text'];
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return $Block;
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}
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}
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#
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# Rule
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protected function blockRule($Line)
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{
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if (\preg_match('/^([' . $Line['text'][0] . '])([ ]*\1){2,}[ ]*$/', $Line['text'])) {
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$Block = array('element' => array('name' => 'hr'));
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return $Block;
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}
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}
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#
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# Setext
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protected function blockSetextHeader($Line, array $Block = null)
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{
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if (!isset($Block) or isset($Block['type']) or isset($Block['interrupted'])) {
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return;
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}
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if (\chop($Line['text'], $Line['text'][0]) === '') {
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$Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';
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return $Block;
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}
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}
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#
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# Markup
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protected function blockMarkup($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 (\preg_match('/^<(\w[\w-]*)(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*(\/)?>/', $Line['text'], $matches)) {
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$element = \strtolower($matches[1]);
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if (\in_array($element, $this->textLevelElements)) {
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return;
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}
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$Block = array('name' => $matches[1], 'depth' => 0, 'markup' => $Line['text']);
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$length = \strlen($matches[0]);
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$remainder = \substr($Line['text'], $length);
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if (\trim($remainder) === '') {
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if (isset($matches[2]) or \in_array($matches[1], $this->voidElements)) {
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$Block['closed'] = \true;
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$Block['void'] = \true;
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}
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} else {
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if (isset($matches[2]) or \in_array($matches[1], $this->voidElements)) {
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return;
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}
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if (\preg_match('/<\/' . $matches[1] . '>[ ]*$/i', $remainder)) {
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$Block['closed'] = \true;
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}
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}
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return $Block;
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}
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}
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protected function blockMarkupContinue($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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if (\preg_match('/^<' . $Block['name'] . '(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*>/i', $Line['text'])) {
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$Block['depth']++;
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}
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if (\preg_match('/(.*?)<\/' . $Block['name'] . '>[ ]*$/i', $Line['text'], $matches)) {
|
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if ($Block['depth'] > 0) {
|
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$Block['depth']--;
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} else {
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$Block['closed'] = \true;
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}
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}
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if (isset($Block['interrupted'])) {
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$Block['markup'] .= "\n";
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unset($Block['interrupted']);
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}
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$Block['markup'] .= "\n" . $Line['body'];
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return $Block;
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}
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#
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# Reference
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|
protected function blockReference($Line)
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{
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if (\preg_match('/^\[(.+?)\]:[ ]*<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*$/', $Line['text'], $matches)) {
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$id = \strtolower($matches[1]);
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$Data = array('url' => $matches[2], 'title' => null);
|
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if (isset($matches[3])) {
|
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$Data['title'] = $matches[3];
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}
|
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$this->DefinitionData['Reference'][$id] = $Data;
|
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$Block = array('hidden' => \true);
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return $Block;
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}
|
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}
|
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#
|
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# Table
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|
protected function blockTable($Line, array $Block = null)
|
|
{
|
|
if (!isset($Block) or isset($Block['type']) or isset($Block['interrupted'])) {
|
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return;
|
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}
|
|
if (\strpos($Block['element']['text'], '|') !== \false and \chop($Line['text'], ' -:|') === '') {
|
|
$alignments = array();
|
|
$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 = array();
|
|
$header = $Block['element']['text'];
|
|
$header = \trim($header);
|
|
$header = \trim($header, '|');
|
|
$headerCells = \explode('|', $header);
|
|
foreach ($headerCells as $index => $headerCell) {
|
|
$headerCell = \trim($headerCell);
|
|
$HeaderElement = array('name' => 'th', 'text' => $headerCell, 'handler' => 'line');
|
|
if (isset($alignments[$index])) {
|
|
$alignment = $alignments[$index];
|
|
$HeaderElement['attributes'] = array('style' => 'text-align: ' . $alignment . ';');
|
|
}
|
|
$HeaderElements[] = $HeaderElement;
|
|
}
|
|
# ~
|
|
$Block = array('alignments' => $alignments, 'identified' => \true, 'element' => array('name' => 'table', 'handler' => 'elements'));
|
|
$Block['element']['text'][] = array('name' => 'thead', 'handler' => 'elements');
|
|
$Block['element']['text'][] = array('name' => 'tbody', 'handler' => 'elements', 'text' => array());
|
|
$Block['element']['text'][0]['text'][] = array('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 = array();
|
|
$row = $Line['text'];
|
|
$row = \trim($row);
|
|
$row = \trim($row, '|');
|
|
\preg_match_all('/(?:(\\\\[|])|[^|`]|`[^`]+`|`)+/', $row, $matches);
|
|
foreach ($matches[0] as $index => $cell) {
|
|
$cell = \trim($cell);
|
|
$Element = array('name' => 'td', 'handler' => 'line', 'text' => $cell);
|
|
if (isset($Block['alignments'][$index])) {
|
|
$Element['attributes'] = array('style' => 'text-align: ' . $Block['alignments'][$index] . ';');
|
|
}
|
|
$Elements[] = $Element;
|
|
}
|
|
$Element = array('name' => 'tr', 'handler' => 'elements', 'text' => $Elements);
|
|
$Block['element']['text'][1]['text'][] = $Element;
|
|
return $Block;
|
|
}
|
|
}
|
|
#
|
|
# ~
|
|
#
|
|
protected function paragraph($Line)
|
|
{
|
|
$Block = array('element' => array('name' => 'p', 'text' => $Line['text'], 'handler' => 'line'));
|
|
return $Block;
|
|
}
|
|
#
|
|
# Inline Elements
|
|
#
|
|
protected $InlineTypes = array('"' => array('SpecialCharacter'), '!' => array('Image'), '&' => array('SpecialCharacter'), '*' => array('Emphasis'), ':' => array('Url'), '<' => array('UrlTag', 'EmailTag', 'Markup', 'SpecialCharacter'), '>' => array('SpecialCharacter'), '[' => array('Link'), '_' => array('Emphasis'), '`' => array('Code'), '~' => array('Strikethrough'), '\\' => array('EscapeSequence'));
|
|
# ~
|
|
protected $inlineMarkerList = '!"*_&[:<>`~\\';
|
|
#
|
|
# ~
|
|
#
|
|
public function line($text, $nonNestables = array())
|
|
{
|
|
$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 = array('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/", ' ', $text);
|
|
return array('extent' => \strlen($matches[0]), 'element' => array('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:' . $url;
|
|
}
|
|
return array('extent' => \strlen($matches[0]), 'element' => array('name' => 'a', 'text' => $matches[1], 'attributes' => array('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)) {
|
|
$emphasis = 'em';
|
|
} else {
|
|
return;
|
|
}
|
|
return array('extent' => \strlen($matches[0]), 'element' => array('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 array('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 = array('extent' => $Link['extent'] + 1, 'element' => array('name' => 'img', 'attributes' => array('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 = array('name' => 'a', 'handler' => 'line', 'nonNestables' => array('Url', 'Link'), 'text' => null, 'attributes' => array('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 array('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 array('markup' => $matches[0], 'extent' => \strlen($matches[0]));
|
|
}
|
|
if ($Excerpt['text'][1] === '!' and \preg_match('/^<!---?[^>-](?:-?[^-])*-->/s', $Excerpt['text'], $matches)) {
|
|
return array('markup' => $matches[0], 'extent' => \strlen($matches[0]));
|
|
}
|
|
if ($Excerpt['text'][1] !== ' ' and \preg_match('/^<\w[\w-]*(?:[ ]*' . $this->regexHtmlAttribute . ')*[ ]*\/?>/s', $Excerpt['text'], $matches)) {
|
|
return array('markup' => $matches[0], 'extent' => \strlen($matches[0]));
|
|
}
|
|
}
|
|
protected function inlineSpecialCharacter($Excerpt)
|
|
{
|
|
if ($Excerpt['text'][0] === '&' and !\preg_match('/^&#?\w+;/', $Excerpt['text'])) {
|
|
return array('markup' => '&', 'extent' => 1);
|
|
}
|
|
$SpecialCharacter = array('>' => 'gt', '<' => 'lt', '"' => 'quot');
|
|
if (isset($SpecialCharacter[$Excerpt['text'][0]])) {
|
|
return array('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'], $matches)) {
|
|
return array('extent' => \strlen($matches[0]), 'element' => array('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];
|
|
$Inline = array('extent' => \strlen($matches[0][0]), 'position' => $matches[0][1], 'element' => array('name' => 'a', 'text' => $url, 'attributes' => array('href' => $url)));
|
|
return $Inline;
|
|
}
|
|
}
|
|
protected function inlineUrlTag($Excerpt)
|
|
{
|
|
if (\strpos($Excerpt['text'], '>') !== \false and \preg_match('/^<(\w+:\/{2}[^ >]+)>/i', $Excerpt['text'], $matches)) {
|
|
$url = $matches[1];
|
|
return array('extent' => \strlen($matches[0]), 'element' => array('name' => 'a', 'text' => $url, 'attributes' => array('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 = $Element['text'];
|
|
} elseif (isset($Element['rawHtml'])) {
|
|
$text = $Element['rawHtml'];
|
|
$allowRawHtmlInSafeMode = isset($Element['allowRawHtmlInSafeMode']) && $Element['allowRawHtmlInSafeMode'];
|
|
$permitRawHtml = !$this->safeMode || $allowRawHtmlInSafeMode;
|
|
}
|
|
if (isset($text)) {
|
|
$markup .= '>';
|
|
if (!isset($Element['nonNestables'])) {
|
|
$Element['nonNestables'] = array();
|
|
}
|
|
if (isset($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 $safeUrlNameToAtt = array('a' => 'href', 'img' => 'src');
|
|
if (isset($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'][$att]);
|
|
} elseif (self::striAtStart($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 = array();
|
|
#
|
|
# Fields
|
|
#
|
|
protected $DefinitionData;
|
|
#
|
|
# Read-Only
|
|
protected $specialCharacters = array('\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!', '|');
|
|
protected $StrongRegex = array('*' => '/^[*]{2}((?:\\\\\\*|[^*]|[*][^*]*[*])+?)[*]{2}(?![*])/s', '_' => '/^__((?:\\\\_|[^_]|_[^_]*_)+?)__(?!_)/us');
|
|
protected $EmRegex = array('*' => '/^[*]((?:\\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s', '_' => '/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us');
|
|
protected $regexHtmlAttribute = '[a-zA-Z_:][\w:.-]*(?:\s*=\s*(?:[^"\'=<>`\s]+|"[^"]*"|\'[^\']*\'))?';
|
|
protected $voidElements = array('area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source');
|
|
protected $textLevelElements = array('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');
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}
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#
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#
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# Parsedown
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# http://parsedown.org
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#
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# (c) Emanuil Rusev
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# http://erusev.com
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#
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# For the full license information, view the LICENSE file that was distributed
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# with this source code.
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#
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#
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\class_alias('Anyape\Parsedown', 'Parsedown', \false);
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