218 lines
7.8 KiB
PHP
218 lines
7.8 KiB
PHP
<?php
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/**
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* picoblog
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*
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* made by hxii (https://0xff.nu/picoblog)
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*
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* Picoblog is a very simple front-end for a twtxt (https://github.com/prologic/twtxt) format microblog with support for:
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* - Limited Markdown (strong, em, marked, deleted, links, images, inline code).
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* - Tags (#tags are automatically converted to links).
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* - Unique IDs (I use them, but they are optional).
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*/
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namespace hxii;
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class PicoBlog
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{
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private $sourcefile, $format;
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public $rawentries, $blog;
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/**
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* Constructor.
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*
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* @param string $sourcefile Source file in twtxt format (or PicoBlog format).
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*/
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//twtxt
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public function __construct(string $sourcefile, string $format = 'picoblog')
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{
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$this->sourcefile = $sourcefile;
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$this->format = $format;
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$this->readSource();
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}
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/**
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* Check for and parse query string from $_SERVER['QUERY_STRING']).
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* Used to get entries by ID or tag.
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*
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* @return array|boolean
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*/
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public function parseQuery()
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{
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if (isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING'])) {
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parse_str($_SERVER['QUERY_STRING'], $return);
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return $return;
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} else {
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return false;
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}
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}
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/**
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* Read source file/URL
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*
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* @return boolean true if successful, false if not
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*/
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private function readSource()
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{
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if (is_file($this->sourcefile) && is_readable($this->sourcefile)) {
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$this->rawentries = explode(PHP_EOL, file_get_contents($this->sourcefile));
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if (!empty($this->rawentries)) {
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return true;
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}
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} elseif ($url = filter_var($this->sourcefile, FILTER_VALIDATE_URL)) {
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$this->rawentries = preg_split('/\x0A/', file_get_contents($url));
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if (!empty($this->rawentries)) {
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return true;
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}
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}
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throw new \Exception("{$this->sourcefile} is empty! Aborting.");
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return false;
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}
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/**
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* Parse entries from source file and replace tags with links
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*
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* @param array $entries array of raw entries
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* @return void
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*/
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private function parseEntries(array $entries, bool $parseTags = true)
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{
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switch ($this->format) {
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case 'twtxt':
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$pattern = '/^(?<date>[^\t]+)\t(?<entry>.+)/';
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break;
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case 'picoblog':
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$pattern = '/^(?<date>[^\t]+)\t\(#(?<id>[a-zA-Z0-9]{6,7})\)\t(?<entry>.+)/';
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break;
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}
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foreach ($entries as $i => $entry) {
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preg_match($pattern, $entry, $matches);
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if (!$matches) continue;
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$id = (!empty($matches['id'])) ? $matches['id'] : $i;
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$matches['entry'] = $this->parseUsers($matches['entry']);
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$matches['entry'] = $this->parseHashlinks($matches['entry']);
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$parsedEntries[$id] = [
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'date' => $matches['date'],
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'entry' => ($parseTags) ? preg_replace('/#(\w+)?/', '<a href="?tag=$1" class="tag">#${1}</a>', $matches['entry']) : $matches['entry'],
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];
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}
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return $parsedEntries;
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}
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/**
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* Parse user's nick
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*
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* @param string $entry
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* @return string string with parsed users
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*/
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/*private function parseNick(array $entries)
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{
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$pattern = '/^(?<date>[^\t]+)\t(?<nick>.+)/';
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preg_match('# nick\t=\t]+)\t(?<nick>.+)/', $nick, $matchn);
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//if (!$matches) continue;
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//$id = (!empty($matches['id'])) ? $matches['id'] : $i;
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//$matches['entry'] = $this->parseUsers($matches['entry']);
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//$matches['entry'] = $this->parseHashlinks($matches['entry']);
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$parsedNick = [
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'nick' => $matchn['nick']
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];
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return $parsedNick;
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}
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private function parseNick(string $entry) {
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$pattern = "# nick = (.+)";
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$aaa=preg_match_all($pattern, $this->rawentries, $matches);
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print_r($aaa);
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return print_r($aaa);
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}*/
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/**
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* Parse any mentioned users in twtxt format: @<username https://feed-url>
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*
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* @param string $entry
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* @return string string with parsed users
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*/
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private function parseUsers(string $entry) {
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$pattern = '/\@<([a-zA-Z0-9\.]+)\W+(https?:\/\/[^>]+)>/';
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return preg_replace($pattern,'<a href="$2">@$1</a>',$entry);
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}
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/**
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* Parse any hashtags in twtxt.net hashlink format: #<tag https://feed-url>
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*
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* @param string $entry
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* @return string string with parsed hashtags
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*/
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private function parseHashlinks(string $entry) {
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$pattern = '/#<(\w+)\W+(https?:\/\/[^>]+)>/';
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return preg_replace($pattern, '<a href="$2">#$1</a>', $entry);
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}
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/**
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* Returns a filtered list of raw entries
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*
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* @param string|array $search entry filter. can be 'all', 'newest', 'oldest', 'random' or an ID/Tag.
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* @param bool $reverse return array in reverse order
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* For ID, we're looking for ['id'=>'IDHERE']. For tag, we're looking for ['tag'=>'tagname']
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* @return boolean|array
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*/
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public function getEntries($search, bool $reverse = true)
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{
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switch ($search) {
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case '':
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return false;
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case 'all':
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return ($reverse) ? array_reverse($this->rawentries) : $this->rawentries;
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case 'newest':
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return [reset($this->rawentries)];
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case 'oldest':
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return [end($this->rawentries)];
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case 'random':
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return [$this->rawentries[array_rand($this->rawentries, 1)]];
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default:
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if (isset($search['id'])) {
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$filter = array_filter($this->rawentries, function ($entry) use ($search) {
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preg_match("/\b$search[id]\b/i", $entry, $match);
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return $match;
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});
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return $filter;
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} elseif (isset($search['tag'])) {
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$filter = array_filter($this->rawentries, function ($entry) use ($search) {
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preg_match("/#\b$search[tag]\b/i", $entry, $match);
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return $match;
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});
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return $filter;
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}
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return false;
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}
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}
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/**
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* Render Markdown in given entries and output as HTML
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*
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* @param array $entries array of parsed entries to render
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* @param string $entryWrap tne entry wrapper, e.g. <li>{entry}</li>
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* @param bool $parseTags should #tags be parsed to links?
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* @return string entries in HTML
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*/
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public function renderEntries(array $entries, $show, string $entryWrap = '<li>{entry}</li>', bool $parseTags = false)
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{
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if (!$entries) return false;
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$entries = $this->parseEntries($entries, $parseTags);
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//$nick = $this->parseNick($nick);
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require_once('includes/Slimdown.php');
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$html = '';
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foreach ($entries as $id => $entry) {
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include "settings.php";
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$text = \Slimdown::render($entry['entry']);
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$date = $entry['date'];
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$date_p = date("M j, Y", strtotime($entry['date']));
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if($show!=true){
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$text = "<div class='e elist'><p><b><a href='$url'><img class='pp' src='{$avatar}'> {$nick}</a> • </b><span class='date' title='{$date}'>{$date_p}<a class='go' href='?id={$id}'>➜</a></span></p><span class='text'>" . $text . "</span></div>";
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} else {
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$text = "<div class='e show'><h3><a href='$url'><img class='pp' src='{$avatar}'> {$nick}</a> • <span class='date' title='{$date}'>{$date_p}</span><span class='date' style='float:right'>#{$id}<span></h3><h2 class='text'>" . $text . "</h2></div>";
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}
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$html .= str_replace('{entry}', $text, $entryWrap);
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}
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return $html;
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}
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}
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