plugins/gallery/imagetag.php
author Dan Fuhry <dan@enanocms.org>
Sat, 21 Aug 2010 23:25:41 -0400
changeset 41 0944c9354e9c
parent 26 023a21c8f47c
child 42 7c6e2e97aa08
permissions -rw-r--r--
Tagged release so that we can use a separate download for the upcoming revision which will only support 1.1.8 trunk.
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<?php
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/*
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 * Snapr
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 * Version 0.1 beta 1
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 * Copyright (C) 2007 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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// Add an [[:Image:foo]] tag handler to the wiki formatter
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$plugins->attachHook('render_wikiformat_pre', 'snapr_process_image_tags($text);');
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function snapr_process_image_tags(&$text)
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{
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  $text = snapr_image_tags_stage1($text, $taglist);
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  $text = snapr_image_tags_stage2($text, $taglist);
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}
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/*
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 * Functions copied from render.php
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 */
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/**
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 * Changes wikitext image tags to HTML.
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 * @param string The wikitext to process
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 * @param array Will be overwritten with the list of HTML tags (the system uses tokens for TextWiki compatibility)
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 * @return string
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 */
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function snapr_image_tags_stage1($text, &$taglist)
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{
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  global $db, $session, $paths, $template, $plugins; // Common objects
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  static $idcache = array();
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  $s_delim = "\xFF";
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  $f_delim = "\xFF";
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  $taglist = array();
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  // Wicked huh?
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  $regex = '/\[\[:' . str_replace('/', '\\/', preg_quote($paths->nslist['Gallery'])) . '([\w\s0-9_\(\)!@%\^\+\|\.-]+?)((\|thumb)|(\|([0-9]+)x([0-9]+)))?(\|left|\|right)?(\|raw|\|(.+))?\]\]/i';
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  preg_match_all($regex, $text, $matches);
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  foreach ( $matches[0] as $i => $match )
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  {
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    $full_tag   =& $matches[0][$i];
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    $imagename  =& $matches[1][$i];
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    $scale_type =& $matches[2][$i];
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    $width      =& $matches[5][$i];
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    $height     =& $matches[6][$i];
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    $clear      =& $matches[7][$i];
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    $caption    =& $matches[8][$i];
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    // determine the image name
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    $imagename = sanitize_page_id($imagename);
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    if ( isset($idcache[$imagename]) )
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    {
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      $found_image_id = true;
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      $filename =& $idcache[$imagename];
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    }
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    else
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    {
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      $found_image_id = false;
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      // get the image ID
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      // Ech... he sent us a string... parse it and see what we get
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      if ( strstr($imagename, '/') )
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      {
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        $folders = explode('/', $imagename);
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      }
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      else
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      {
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        $folders = array($imagename);
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      }
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      foreach ( $folders as $i => $_crap )
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      {
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        $folder =& $folders[$i];
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        $folder = dirtify_page_id($folder);
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        $folder = str_replace('_', ' ', $folder);
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      }
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      unset($folder);
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      $folders = array_reverse($folders);
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      // This is one of the best MySQL tricks on the market. We're going to reverse-travel a folder path using LEFT JOIN and the incredible power of metacoded SQL
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      $sql = 'SELECT g0.img_id, g0.img_title, g0.img_desc, g0.print_sizes, g0.img_time_upload, g0.img_time_mod, g0.img_filename, g0.folder_parent, g0.img_tags FROM '.table_prefix.'gallery AS g0';
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      $where = "\n  " . 'WHERE g0.img_title=\'' . $db->escape($folders[0]) . '\'';
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      foreach ( $folders as $i => $folder )
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      {
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        if ( $i == 0 )
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          continue;
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        $i_dec = $i - 1;
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        $folder = $db->escape($folder);
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        $sql .= "\n  LEFT JOIN ".table_prefix."gallery AS g{$i}\n    ON ( g{$i}.img_id=g{$i_dec}.folder_parent AND g{$i}.img_title='$folder' )";
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        $where .= "\n    ".'AND g'.$i.'.img_id IS NOT NULL';
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      }
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      $where .= "\n    AND g{$i}.folder_parent IS NULL";
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      $sql .= $where . ';';
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      if ( !$db->sql_query($sql) )
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      {
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        $db->_die('The image metadata could not be loaded.');
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      }
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      if ( $db->numrows() > 0 )
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      {
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        $found_image_id = true;
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        $row = $db->fetchrow();
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        $db->free_result();
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        $idcache[$imagename] = $row['img_id'];
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        $filename =& $idcache[$imagename];
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      }
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    }
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    if ( !$found_image_id )
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    {
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      $text = str_replace($full_tag, '[[' . makeUrlNS('Gallery', $imagename) . ']]', $text);
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      continue;
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    }
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    if ( $scale_type == '|thumb' )
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    {
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      $r_width  = 225;
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      $r_height = 225;
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      $url = makeUrlNS('Special', 'GalleryFetcher/embed/' . $filename, 'width=' . $r_width . '&height=' . $r_height, true);
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    }
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    else if ( !empty($width) && !empty($height) )
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    {
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      $r_width = $width;
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      $r_height = $height;
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      $url = makeUrlNS('Special', 'GalleryFetcher/embed/' . $filename, 'width=' . $r_width . '&height=' . $r_height, true);
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    }
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    else
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    {
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      $url = makeUrlNS('Special', 'GalleryFetcher/' . $filename);
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    }
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    $img_tag = '<img src="' . $url . '" ';
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    // if ( isset($r_width) && isset($r_height) && $scale_type != '|thumb' )
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    // {
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    //   $img_tag .= 'width="' . $r_width . '" height="' . $r_height . '" ';
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    // }
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    $img_tag .= 'style="border-width: 0px; /* background-color: white; */" ';
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    $code = $plugins->setHook('snapr_img_tag_parse_img');
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    foreach ( $code as $cmd )
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    {
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      eval($cmd);
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    }
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    $img_tag .= '/>';
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    $complete_tag = '';
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    if ( !empty($scale_type) && $caption != '|raw' )
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    {
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      $complete_tag .= '<div class="thumbnail" ';
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      $clear_text = '';
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      if ( !empty($clear) )
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      {
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        $side = ( $clear == '|left' ) ? 'left' : 'right';
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        $opposite = ( $clear == '|left' ) ? 'right' : 'left';
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        $clear_text .= "float: $side; margin-$opposite: 20px; width: {$r_width}px;";
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        $complete_tag .= 'style="' . $clear_text . '" ';
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      }
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      $complete_tag .= '>';
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      $complete_tag .= '<a href="' . makeUrlNS('Gallery', $filename) . '" style="display: block;">';
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      $complete_tag .= $img_tag;
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      $complete_tag .= '</a>';
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      $mag_button = '<a href="' . makeUrlNS('Gallery', $filename) . '" style="display: block; float: right; clear: right; margin: 0 0 10px 10px;"><img alt="[ + ]" src="' . scriptPath . '/images/thumbnail.png" style="border-width: 0px;" /></a>';
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      if ( !empty($caption) )
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      {
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        $cap = substr($caption, 1);
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        $complete_tag .= $mag_button . $cap;
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      }
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      $complete_tag .= '</div>';
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    }
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    else if ( $caption == '|raw' )
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    {
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      $complete_tag .= "$img_tag";
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      $taglist[$i] = $complete_tag;
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      $repl = "{$s_delim}e_img_{$i}{$f_delim}";
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      $text = str_replace($full_tag, $repl, $text);
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      continue;
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    }
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    else
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    {
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      $complete_tag .= '<a href="' . makeUrlNS('Gallery', $filename) . '" style="display: block;"';
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      $code = $plugins->setHook('snapr_img_tag_parse_link');
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      foreach ( $code as $cmd )
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      {
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        eval($cmd);
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      }
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      $complete_tag .= '>';
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      $complete_tag .= $img_tag;
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      $complete_tag .= '</a>';
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    }
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    $complete_tag .= "\n\n";
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    $taglist[$i] = $complete_tag;
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    $pos = strpos($text, $full_tag);
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    while(true)
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    {
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      $check1 = substr($text, $pos, 3);
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      $check2 = substr($text, $pos, 1);
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      if ( $check1 == '<p>' || $pos == 0 || $check2 == "\n" )
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      {
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        // die('found at pos '.$pos);
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        break;
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      }
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      $pos--;
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    }
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    $repl = "{$s_delim}e_img_{$i}{$f_delim}";
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    $text = substr($text, 0, $pos) . $repl . substr($text, $pos);
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    $text = str_replace($full_tag, '', $text);
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    unset($full_tag, $filename, $scale_type, $width, $height, $clear, $caption, $r_width, $r_height);
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  }
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  return $text;
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}
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/**
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 * Finalizes processing of image tags.
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 * @param string The preprocessed text
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 * @param array The list of image tags created by RenderMan::process_image_tags()
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 */
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function snapr_image_tags_stage2($text, $taglist)
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{
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  $s_delim = "\xFF";
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  $f_delim = "\xFF";
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  foreach ( $taglist as $i => $tag )
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  {
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    $repl = "{$s_delim}e_img_{$i}{$f_delim}";
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    $text = str_replace($repl, $tag, $text);
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  }               
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  return $text;
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}
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?>