Source for file api.gallery.php

<?php
////////////////////////////////////////////////////////////////////////////////
//   Copyright (C) ReloadCMS Development Team                                 //
//   http://reloadcms.sf.net                                                  //
//                                                                            //
//   This program is distributed in the hope that it will be useful,          //
//   but WITHOUT ANY WARRANTY, without even the implied warranty of           //
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                     //
//                                                                            //
//   This product released under GNU General Public License v2                //
////////////////////////////////////////////////////////////////////////////////
 
$gd_formats = '';
if(function_exists('imagegif')) $gd_formats .= 'gif ';
if(function_exists('imagejpeg')) $gd_formats .= 'jpg jpeg jpe ';
if(function_exists('imagepng')) $gd_formats .= 'png ';
define('GD_SUPPORTED_FORMATS', $gd_formats);
define('GD_SUPPORTED_FORMATS_PREG', '#.*\.(' . implode('|', explode(' ', $gd_formats)) . ')$#i');
define('GALLERY_UPLOAD_DIR', GALLERY_PATH . 'new/');
define('GALLERY_INDEXES_DIR', GALLERY_PATH . 'indexes/');
define('GALLERY_IMAGES_DIR', GALLERY_PATH . 'images/');
define('GALLERY_THUMBS_DIR', GALLERY_PATH . 'thumbnails/');
define('GALLERY_COMMENTS_DIR', GALLERY_PATH . 'comments/');
 
class gallery{
    var $img_preg = '/.*\.(jpg|jpe|jpeg|gif|png|bmp)$/i';
    var $gd_preg = GD_SUPPORTED_FORMATS_PREG;
    var $path = GALLERY_PATH;
    var $indexes = array();
 
    function gallery(){
        // Load Index files
        $this->loadIndexFiles();
    }
 
    function rebuildIndex(){
        @set_time_limit(0);
        
        $this->scanForRemovedImages();
        $this->cleanUpDirectories();
        $this->scanForNewImages();
        $this->cleanUpIndexes();
        $this->saveIndexFiles();
    }
    
    function scanForRemovedImages(){
        foreach ($this->indexes['filename'] as $filename){
            if(!is_file(GALLERY_IMAGES_DIR . $filename)){
                $this->removeImage($filename);
            }
        }
    }
    
    function cleanUpDirectories(){
        $images = rcms_scandir(GALLERY_IMAGES_DIR);
        foreach ($images as $image){
            if(!in_array($image, $this->indexes['filename'])){
                rcms_delete_files(GALLERY_IMAGES_DIR . $image);
            }
        }
        $images = rcms_scandir(GALLERY_COMMENTS_DIR);
        foreach ($images as $image){
            if(!in_array(substr($image, 0, -4), $this->indexes['filename'])){
                rcms_delete_files(GALLERY_COMMENTS_DIR . $image);
            }
        }
        $images = rcms_scandir(GALLERY_THUMBS_DIR);
        foreach ($images as $image){
            if(!in_array(substr($image, 0, -4), $this->indexes['filename'])){
                rcms_delete_files(GALLERY_THUMBS_DIR . $image);
            }
        }
    }
    
    function scanForNewImages(){
        $return = array();
        $new_images = $this->getImages(GALLERY_UPLOAD_DIR);
        foreach ($new_images as $image){
            $image_newname = $image;
            $temp_i = 0;
            $ext = array_reverse(explode('.', $image));
            $ext = $ext[0];
            while(in_array($image_newname, $this->indexes['filename']) || is_file(GALLERY_IMAGES_DIR . $image_newname)){
                $temp_i++;
                $image_newname = substr($image, 0, -(strlen($ext))-1) . '_' . $temp_i . '.' . $ext;
            }
            if(substr($ext, 0, 2) == 'jp') $type = 'jpeg'; else $type = $ext;
            list($width, $height, $x, $x) = getimagesize(GALLERY_UPLOAD_DIR . $image);
            $size = $width . 'x' . $height;
            rcms_rename_file(GALLERY_UPLOAD_DIR . $image, GALLERY_IMAGES_DIR . $image_newname);
            $this->registerInIndex($image_newname, $image_newname, $size, $type);
            $return[$image] = $image_newname;
        }
        return $return;
    }
 
    function cleanUpIndexes(){
        foreach ($this->indexes['type'] as $type => $images){
            if(empty($images)){
                rcms_remove_index($type, $this->indexes['type'][$type], true);
            }
        }
 
        foreach ($this->indexes['size'] as $size => $images){
            if(empty($images)){
                rcms_remove_index($size, $this->indexes['size'][$size], true);
            }
        }
 
        foreach ($this->indexes['keywords'] as $keyword => $images){
            if(empty($images)){
                rcms_remove_index($size, $this->indexes['keywords'][$keyword], true);
            }
        }
    }
    
    function loadIndexFiles(){
        if(!is_readable(GALLERY_INDEXES_DIR . 'main.dat') || !($this->indexes['main'] = @unserialize(file_get_contents(GALLERY_INDEXES_DIR . 'main.dat')))){
            $this->indexes['main'] = array();
            $this->indexes['filename'] = array();
            $this->indexes['title'] = array();
            $this->indexes['size'] = array();
            $this->indexes['type'] = array();
            $this->indexes['keywords'] = array();
            return true;
        }
        $this->indexes['filename'] = @unserialize(@file_get_contents(GALLERY_INDEXES_DIR . 'filename.dat'));
        $this->indexes['title'] = @unserialize(@file_get_contents(GALLERY_INDEXES_DIR . 'title.dat'));
        $this->indexes['size'] = @unserialize(@file_get_contents(GALLERY_INDEXES_DIR . 'size.dat'));
        $this->indexes['type'] = @unserialize(@file_get_contents(GALLERY_INDEXES_DIR . 'type.dat'));
        $this->indexes['keywords'] = @unserialize(@file_get_contents(GALLERY_INDEXES_DIR . 'keywords.dat'));
        return true;
    }
 
    function registerInIndex($filename, $title, $size, $type){
        $this->indexes['main'][$filename] = array('title' => $title, 'size' => $size, 'type' => $type);
        $this->indexes['filename'][] = $filename;
        $this->indexes['title'][$filename] = $title;
        $this->indexes['size'][$size][] = $filename;
        $this->indexes['type'][strtolower($type)][] = $filename;
    }
 
    function unregisterInIndex($filename){
        if(empty($this->indexes['main'][$filename])) return false;
        $k_f = array_search($filename, $this->indexes['filename']);
        $size = $this->indexes['main'][$filename]['size'];
        $type = strtolower($this->indexes['main'][$filename]['type']);
        $k_s = @array_search($filename, $this->indexes['size'][$size]);
        $k_t = @array_search($filename, $this->indexes['type'][$type]);
 
        $this->indexes['filename'][$k_f] = '';
        $this->indexes['size'][$size][$k_s] = '';
        $this->indexes['type'][$type][$k_t] = '';
 
        $this->unsetKeywords($filename);
 
        rcms_remove_index($k_f, $this->indexes['filename'], true);
        rcms_remove_index($filename, $this->indexes['title'], true);
        rcms_remove_index($k_s, $this->indexes['size'][$size], true);
        rcms_remove_index($k_t, $this->indexes['type'][$type], true);
 
        $this->indexes['main'][$filename] = array();
        rcms_remove_index($filename, $this->indexes['main'], true);
 
        return true;
    }
 
    function setKeywords($filename, $keywords){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        $this->indexes['main'][$filename]['keywords'] = $keywords;
        if(!empty($keywords)){
            $keywords_array = explode(';', $keywords);
            foreach ($keywords_array as $keyword){
                $keyword = trim($keyword);
                $this->indexes['keywords'][$keyword][] = $filename;
            }
        }
        return true;
    }
 
    function unsetKeywords($filename){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        $keywords = explode(';', @$this->indexes['main'][$filename]['keywords']);
        if(!empty($keywords)){
            foreach ($keywords as $keyword){
                $keyword = trim($keyword);
                $k = @array_search($filename, $this->indexes['keywords'][$keyword]);
                @rcms_remove_index($k, $this->indexes['keywords'][$keyword], true);
            }
        }
        return true;
    }
 
 
    function changeKeywords($filename, $keywords){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        if(!empty($this->indexes['main'][$filename]['keywords'])){
            $this->unsetKeywords($filename);
        }
        $this->setKeywords($filename, $keywords);
        return true;
    }
 
    function removeImage($filename){
        $this->unregisterInIndex($filename);
        if(is_file(GALLERY_IMAGES_DIR . $filename)) rcms_delete_files(GALLERY_IMAGES_DIR . $filename);
        if(is_file(GALLERY_COMMENTS_DIR . $filename . '.dat')) rcms_delete_files(GALLERY_COMMENTS_DIR . $filename . '.dat');
        if(is_file(GALLERY_THUMBS_DIR . $filename . '.jpg')) rcms_delete_files(GALLERY_THUMBS_DIR . $filename . '.jpg');
        return true;
    }
 
    function saveIndexFiles(){
        file_write_contents(GALLERY_INDEXES_DIR . 'main.dat', serialize($this->indexes['main']));
        file_write_contents(GALLERY_INDEXES_DIR . 'filename.dat', serialize($this->indexes['filename']));
        file_write_contents(GALLERY_INDEXES_DIR . 'title.dat', serialize($this->indexes['title']));
        file_write_contents(GALLERY_INDEXES_DIR . 'size.dat', serialize($this->indexes['size']));
        file_write_contents(GALLERY_INDEXES_DIR . 'type.dat', serialize($this->indexes['type']));
        file_write_contents(GALLERY_INDEXES_DIR . 'keywords.dat', serialize($this->indexes['keywords']));
        return true;
    }
 
    function getImages($directory){
        $directory = rcms_scandir($directory);
        $images = array();
        foreach ($directory as $file){
            if (preg_match($this->img_preg, $file)) {
                $images[] = $file;
            }
        }
        return $images;
    }
 
    function getFullImagesList(){
        $temp = $this->indexes['filename'];
        $this->indexes['filename'] = array();
        foreach ($temp as $key => $data){
            if(!empty($data)) $this->indexes['filename'][$key] = $data;
        }
        $this->saveIndexFiles();
        natsort($this->indexes['filename']);
        return $this->indexes['filename'];
    }
 
    function getAvaiableValues($field){
        if(empty($this->indexes[$field])) return false;
        $result = array();
        foreach (array_keys($this->indexes[$field]) as $key){
            if(!empty($this->indexes[$field][$key])){
                $result[] = $key;
            }
        }
        natsort($result);
        return $result;
    }
 
    function getLimitedImagesList($field, $value){
        if(empty($this->indexes[$field][$value])) return false;
        $result = array();
        foreach ($this->indexes[$field][$value] as $image){
            if(in_array($image, $this->indexes['filename'])) $result[] = $image;
        }
        natsort($result);
        return $result;
    }
 
    function getImage($filename){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        return '<div style="overflow: hidden; width: 100%;"><a href="' . GALLERY_IMAGES_DIR . $filename . '" target="_blank"><img src="' . GALLERY_IMAGES_DIR . $filename . '" alt="' . $this->indexes['main'][$filename]['title'] . '" style="max-width: 95%;" /></a></div>';
    }
 
    function getData($filename){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        return $this->indexes['main'][$filename];
    }
 
    function getComments($filename){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        if(true){
            $comments = guestbook_get_last_msgs(
            null,
            true,
            false,
            GALLERY_COMMENTS_DIR . $filename . '.dat'
            );
            foreach ($comments as $mid => $message) {
                $comments[$mid]['id'] = $mid;
            }
            return $comments;
        }
        return false;
    }
 
 
    function countComments($filename){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        if(true){
            return count(guestbook_get_last_msgs(null, false, false, GALLERY_COMMENTS_DIR . $filename . '.dat'));
        }
        return false;
    }
 
    function postComment($filename, $text){
        global $system;
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        if(!empty($text)){
            return guestbook_post_msg($system->user['username'],
            $system->user['nickname'],
            $text,
            GALLERY_COMMENTS_DIR . $filename . '.dat'
            );
        }
    }
 
    function removeComment($filename, $cid){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        return guestbook_post_remove($cid, GALLERY_COMMENTS_DIR . $filename . '.dat');
    }
 
    function getThumbnail($filename, $mw = 150, $mh = 150){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        if($return = $this->generateThumbnail($filename, $mw, $mh)){
            return $return;
        } else {
            $path = GALLERY_IMAGES_DIR . $filename;
            $stat = getimagesize($path);
            $iw = $stat[0];
            $ih = $stat[1];
            if(($iw > $mh) || ($iw < $mw)) {
                $sizefactor = (($ih > $iw) ? ($mh / $ih) : ($mw / $iw));
            } else {
                $sizefactor =1;
            }
            $nw = (int) ($iw * $sizefactor);
            $nh = (int) ($ih * $sizefactor);
            unset($sizefactor);
            return '<img src="' . $path . '" width="' . $nw . '" height="' . $nh . '" border="0" alt="" />';
        }
    }
 
    function generateThumbnail($filename, $mw, $mh){
        $path = GALLERY_IMAGES_DIR . $filename;
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename) || !preg_match($this->gd_preg, $filename)) return false;
        if(!is_file(GALLERY_THUMBS_DIR . $filename . '.jpg')){
            if(substr(strtolower($filename), -4) == '.jpg') {
                $img = imagecreatefromjpeg($path);
            } elseif(substr(strtolower($filename), -4) == '.gif') {
                $img = imagecreatefromgif($path);
            } elseif(substr(strtolower($filename), -4) == '.png') {
                $img = imagecreatefrompng($path);
            } else return false;
            if(!empty($img)){
                $stat = getimagesize($path);
                $iw = $stat[0];
                $ih = $stat[1];
                if(($iw > $mh) || ($iw < $mw)) {
                    $sizefactor = (($ih > $iw) ? ($mh / $ih) : ($mw / $iw));
                } else {
                    $sizefactor =1;
                }
                $nw = (int) ($iw * $sizefactor);
                $nh = (int) ($ih * $sizefactor);
                unset($sizefactor);
                $thumb = imagecreatetruecolor($nw, $nh);
                imagecopyresampled($thumb, $img, 0, 0, 0, 0, $nw, $nh, $iw, $ih);
                imagejpeg($thumb, GALLERY_THUMBS_DIR . $filename . '.jpg');
                imagedestroy($thumb);
                imagedestroy($img);
            }
        }
        return '<img src="' . GALLERY_THUMBS_DIR . $filename . '.jpg" alt="' . $filename . '" />';
    }
 
    function setDataValue($filename, $dataname, $value){
        if(empty($this->indexes['main'][$filename]) || !is_file(GALLERY_IMAGES_DIR . $filename)) return false;
        $this->indexes['main'][$filename][$dataname] = $value;
        $this->indexes[$dataname][$filename] = $value;
        return true;
    }
}
?>