article.inc.php

   1 <?php
   2 class ArchiveArticle
   3 {
   4         public $raw, $title, $body; # file contents
   5         public $meta = [];  # head metadata properties
   6         public $place = []; # template variables replaced in render()
   7
   8         function __construct($path)
   9         {
  10                 $this->page = preg_replace('{^\.(?:/|$)}', '', $path);
  11                 $this->link = preg_replace('{(?:(?:/|^)index)?\.html$}', '', $this->page);
  12                 $this->raw($this->page);
  13         }
  14
  15         function raw($page)
  16         {
  17                 if (!file_exists($page)) {
  18                         return;
  19                 }
  20                 $this->raw = file_get_contents($page);
  21
  22                 if (preg_match_all('{
  23                         \G <meta \s+ property="( [^"]+ )" \s+ content="( [^"]* )" > \s*
  24                 }x', $this->raw, $meta)) {
  25                         $matchlen = array_sum(array_map('strlen', $meta[0]));
  26                         $this->raw = substr($this->raw, $matchlen); # delete matched contents
  27                         $this->meta = array_combine($meta[1], $meta[2]); # [property => content]
  28                 }
  29
  30                 // find significant contents
  31                 $this->body = preg_replace('{<aside\b.*?</aside>}s', '', $this->raw);
  32                 if (preg_match('{<h2>(.*?)</h2>\s*(.*)}s', $this->body, $titlematch)) {
  33                         list (, $this->title, $this->body) = $titlematch;
  34                 }
  35
  36                 return $this->raw;
  37         }
  38
  39         function __get($col)
  40         {
  41                 return $this->$col = $this->$col();  # run method and cache
  42         }
  43
  44         function handler()
  45         {
  46                 $path = $this->link;
  47                 $this->path = '';
  48                 $this->restricted = FALSE;
  49                 while (TRUE) {
  50                         if (file_exists("$path/.private")) {
  51                                 $this->restricted = $path;
  52                         }
  53
  54                         if (file_exists("$path/index.php")) {
  55                                 return $path;
  56                         }
  57
  58                         $up = strrpos($path, '/');
  59                         $this->path = substr($path, $up) . $this->path;
  60                         $path = substr($path, 0, $up);
  61                         if ($up === FALSE) {
  62                                 break;
  63                         }
  64                 }
  65                 return;
  66         }
  67
  68         function restricted()
  69         {
  70                 $this->handler;
  71                 return $this->restricted;
  72         }
  73
  74         function safetitle()
  75         {
  76                 return trim($this->meta['og:title'] ?? strip_tags($this->title));
  77         }
  78         function name()
  79         {
  80                 return $this->safetitle ?: $this->link;
  81         }
  82
  83         function last()
  84         {
  85                 return filemtime($this->page);
  86         }
  87         function lastiso()
  88         {
  89                 return date(DATE_ATOM, $this->last);
  90         }
  91
  92         function dateparts()
  93         {
  94                 preg_match('< / (\d{4}) [/-] (\d{2}) (?:- (\d{2}) )? - >x', $this->page, $ymd);
  95                 array_shift($ymd);
  96                 return $ymd;
  97         }
  98         function dateiso()
  99         {
 100                 return implode('-', $this->dateparts()) . 'T12:00:00+02:00';
 101         }
 102
 103         function story()
 104         {
 105                 if ( preg_match('{
 106                         (?: < (?: p | figure [^>]* ) >\s* )+ (<img\ [^>]*>) | \n <hr\ />
 107                 }x', $this->body, $img, PREG_OFFSET_CAPTURE) ) {
 108                         # strip part after matching divider (image)
 109                         if (isset($img[1])) {
 110                                 $this->img = $img[1][0];
 111                         }
 112                         return substr($this->body, 0, $img[0][1]);
 113                 }
 114                 return $this->body;
 115         }
 116
 117         function teaser()
 118         {
 119                 if ($override = @$this->meta['og:description']) {
 120                         # prefer specific page description if found in metadata
 121                         return $override;
 122                 }
 123
 124                 # paragraph contents following the page header if any
 125                 if (preg_match('{
 126                         \G (?> \s+ | <div [^>]*> | \[\[[^]]*\]\] )* <p> \s* (.*?) </p>
 127                 }sx', $this->body, $bodyp, 0)) {
 128                         return $bodyp[1];
 129                 }
 130         }
 131
 132         function img()
 133         {
 134                 $this->img = NULL;
 135                 $this->story;
 136                 return $this->img;
 137         }
 138         function image()
 139         {
 140                 if ($override = @$this->meta['og:image']) {
 141                         # prefer specific page image if found in metadata
 142                         return $override;
 143                 }
 144
 145                 if ( preg_match('/\bsrc="([^"]*)"/', $this->img, $src) ) {
 146                         return $src[1];
 147                 }
 148         }
 149         function thumb($size = '300x')
 150         {
 151                 if (!$this->image or $this->image[0] !== '/') return;
 152                 if (preg_match('{^/thumb/\D}', $this->image)) {
 153                         return ltrim($this->image, '/');
 154                 }
 155                 return preg_replace(
 156                         ['{^(?:/thumb/[^/]*)?}', '/\.groot(?=\.\w+$)/'], ["thumb/$size", ''],
 157                         $this->image
 158                 );
 159         }
 160
 161         function widget($name, $params = [])
 162         {
 163                 $path = stream_resolve_include_path("widget/$name.php");
 164                 if (!file_exists($path)) {
 165                         return '<strong class="warn"><em>'.$name.'</em> ontbreekt</strong>';
 166                 }
 167
 168                 ob_start();
 169                 $Page = clone $this;
 170                 if (is_array($params)) {
 171                         $Page->place += $params;
 172                 }
 173                 else {
 174                         foreach (explode(' ', $params) as $param) {
 175                                 if ($set = strpos($param, '=')) {
 176                                         $Page->place[ substr($param, 0, $set) ] = substr($param, $set + 1);
 177                                 }
 178                                 elseif (!empty($param)) {
 179                                         $Page->place[] = $param;
 180                                 }
 181                         }
 182                 }
 183
 184                 try {
 185                         include "widget/$name.php";
 186                         return ob_get_clean();
 187                 }
 188                 catch (Exception $e) {
 189                         return sprintf('<strong class="warn">%s</strong>',
 190                                 "fout in <em>$name</em>: {$e->getMessage()}"
 191                         );
 192                 }
 193         }
 194
 195         function render()
 196         {
 197                 $doc = $this->raw;
 198
 199                 if (!empty($this->place['warn'])) {
 200                         $warn = '<p class="warn">[[warn]]</p>';
 201                         if ($offset = strpos($doc, '</h2>')) {
 202                                 $doc = substr_replace($doc, "\n\n".$warn, $offset + 5, 0);
 203                         }
 204                         else {
 205                                 $doc = $warn . "\n\n" . $doc;
 206                         }
 207                 }
 208
 209                 # keep either login or logout parts depending on user level
 210                 global $User;
 211                 $hideclass = $User && property_exists($User, 'login') && $User->login ? 'logout' : 'login';
 212                 $doc = preg_replace('{\s*<([a-z]+) class="'.$hideclass.'">.*?</\1>}s', '', $doc);
 213
 214                 return preg_replace_callback(
 215                         '{ \[\[ ([^] ]+) ([^]]*) \]\] }x',
 216                         function ($sub) {
 217                                 list ($placeholder, $name, $params) = $sub;
 218                                 $html = $this->place[$name] ??
 219                                         $this->widget($name, $params);
 220                                 if (empty($html) or $html[0] != '<') {
 221                                         $html = "<span>$html</span>";
 222                                 }
 223                                 $attr = sprintf(' data-dyn="%s"', is_numeric($name) ? '' : $name.$params);
 224                                 # contents with identifier in first tag
 225                                 return preg_replace( '/(?=>)/', $attr, $html, 1);
 226                         },
 227                         $doc
 228                 );
 229         }
 230 }
 231
 232 class PageSearch
 233 {
 234         public $handlers = [];
 235
 236         function __construct($path = '.')
 237         {
 238                 $this->iterator = new RecursiveCallbackFilterIterator(
 239                         new RecursiveDirectoryIterator($path),
 240                         function ($current) {
 241                                 if ($current->getFilename()[0] === '.') {
 242                                         # skip hidden files and directories
 243                                         return FALSE;
 244                                 }
 245                                 if (file_exists($current->getFilename() . '/index.php')) {
 246                                         # contents better provided by handler code
 247                                         $this->handlers[ $current->getPathname() ] = $current;
 248                                         return FALSE;
 249                                 }
 250                                 if ($current->isLink()) {
 251                                         # ignore symlinks, original contents only
 252                                         return FALSE;
 253                                 }
 254                                 if ($current->isDir()) {
 255                                         # traverse subdirectories unless untracked in any amount
 256                                         return !file_exists("$current/.gitignore");
 257                                 }
 258                                 # match **/*.html
 259                                 return preg_match('/(?<!\.inc)\.html$/', $current->getFilename());
 260                         }
 261                 );
 262         }
 263
 264         function files()
 265         {
 266                 # order alphabetically by link
 267                 $dir = iterator_to_array(new RecursiveIteratorIterator($this->iterator));
 268                 array_walk($dir, function (&$row, $name) {
 269                         # prepare values for sorting (directory index first)
 270                         $row = preg_replace('{/index\.html$}', '', $name);
 271                 });
 272                 asort($dir);
 273                 return $dir;
 274         }
 275 }