add sqlite hooks

git-svn-id: https://forgesvn1.novell.com/svn/original/trunk@9 4fa712ea-3c06-0410-9261-c11b4c06c003

9 files changed, 552 insertions, 88 deletions

diff --git a/www/inc/comment_form.inc.php b/www/inc/comment_form.inc.php
new file mode 100644
index 0000000..5ac8348
--- /dev/null
+++ b/www/inc/comment_form.inc.php
@@ -0,0 +1,33 @@
+<?php 
+/* 
+ * The HTML contained in this file is valid XHTML 1.0 Strict 
+ */
+
+echo "<div id=\"comment_block\">\n";
+
+?>
+	<?php echo"<div id=\"showhideform\"><strong> " . __('Post a Comment') . "</strong>:"; ?>
+	<span class="comment_toggle"> 
+	[&nbsp;
+	<?php echo"<a href=\"javascript:toggle_comment()\"><span id=\"showlink\">" . __('Show Form') . "</span><span id=\"hidelink\" style=\"display:none;\">" . __('Hide Form') . "</span></a>"; ?>
+	&nbsp;]
+	</span>
+	</div>
+	
+	<div id="comment_form" style="display: none;">
+<?php
+$this->form_start($ThisUrl, "post", NULL);
+$this->input("text", "commentname", $username, __('Name:'), NULL, _('Enter your name.') );
+$this->input("checkbox", "savecommentname", "1", __('Remember Name:'), "yes", 
+             __('Should the browser remember your name?'));
+$magic_number = random_digits(4);
+//temporary. should generate an image instead
+echo "<div class=\"row\"><div class=\"control\">$magic_number</div></div>\n";
+$this->input("hidden", "commentkolacek", md5($magic_number), NULL, NULL, NULL);
+$this->input("text", "commentspamcheck", "", __('Retype PIN Above:'), NULL, __('Enter the number shown above.'));
+$this->input("textarea", "commentdata", "", __('Comment') . " :" , NULL, __('Allowed HTML tags: a,b,i,ul,li,blockquote,br.') );
+$this->input("submit", "", __('Send') , NULL, NULL, NULL);
+$this->form_end();
+?>
+	</div>
+</div>
diff --git a/www/inc/config.inc.php b/www/inc/config.inc.php
index 1f0bbd3..c800fac 100644
--- a/www/inc/config.inc.php
+++ b/www/inc/config.inc.php
@@ -1,8 +1,12 @@
 <?php
 #base dirname
    //dirname("__FILE__/..")
-   eregi("^(.*)/[^/]*$", $ScriptFileName, $x);
-   $root = $x[1];
+	$ThisScript=preg_replace('/\?.*$/', '', $_SERVER['REQUEST_URI']);
+	$ScriptFileName=$_SERVER['SCRIPT_FILENAME'];
+	$HostName=$_SERVER['SERVER_NAME']; 
+	$ThisUrl = $_SERVER['REQUEST_URI'];
+  eregi("^(.*)/[^/]*$", $ScriptFileName, $x);
+  $root = $x[1];
 # ===========================================================================
 # dir index
 	 $sortinmonth = 0;// 1 - alphabetically
@@ -46,7 +50,7 @@ $scnamegallery = "Photo Gallery Index";
    $app["name"] = "Original"; // opensource remote image gallery,
                               // initialy not as lovely 
    $app["url"] = "http://jimmac.musichall.cz/original.php3";
-   $app["version"] = "0.11";
+   $app["version"] = "0.12pre";
 # ===========================================================================
 # EXIF metadata app path (helper app for php3 and older php4)
 # uncomment the method you want to use if you want EXIF data reported
@@ -95,15 +99,16 @@ $scnamegallery = "Photo Gallery Index";
 # eg. it can be "../galleries" to use a galleries dir above the original dir.
   $gallery_dir="../galleries";
 
+#Enable this to access extended tracking functionality
+#depends on sqlite
+$have_sqlite = 1;
+
 # This controls wheather web visitors will be able to post
 # comments to images
 $comments = 1;
 
 # Access Log/Counter
 # $log_access = 0; // no access logging
-# $log_access = 1; // simple counter
-# $log_access = 2; // detailed log FIXME: TODO (not sure about doing this, as 
-									 // it duplicates server's access log and tends to grow large
 $log_access = 1; 
 
 #css styles
diff --git a/www/inc/db.class.inc.php b/www/inc/db.class.inc.php
new file mode 100644
index 0000000..00804a7
--- /dev/null
+++ b/www/inc/db.class.inc.php
@@ -0,0 +1,63 @@
+<?php
+/* SQLite DB class for storing
+   - image views,
+	 - user comments
+*/
+
+$dbfile = "$root/$gallery_dir/photos.db";
+
+//unfortunately in php4, the SQLiteDatabse class isn't created so we have to
+
+class SQLiteDatabase {
+	var $dbfile;
+
+	function SQLiteDatabase ($dbfile) {
+		
+		$this->dbfile = $dbfile;
+		//if db file doesn't exist, fill with skeleton
+		if (file_exists($this->dbfile)) {
+			$this->dbres = sqlite_open($this->dbfile, 0666, $sqliteerror);
+		} else {
+			//fill with skeleton
+			$folder = dirname($this->dbfile);
+			if (!is_writable($folder)) { //we need write permission to create database
+				die("<p style=\"color:red;\">cannot create dabase. check permissions.</p>\n");
+			} else {
+				$this->dbres = sqlite_open($this->dbfile, 0666, $sqliteerror);
+				//photo table
+				$sql = "create table photo (id INTEGER PRIMARY KEY, caption TEXT, ";
+				$sql .= "counter INTEGER, number INTEGER, album TEXT, name TEXT)";
+				$this->query($sql);
+				//comment table
+				$sql = "create table comment (id INTEGER PRIMARY KEY, user TEXT, ";
+				$sql .= "comment_body TEXT, photo_id INT, date DATETIME)";
+				$this->query($sql);
+			}
+		}
+	}
+
+	function query($sql) {
+		global $page;
+
+		if (!$this->result = sqlite_query($this->dbres, $sql)) {
+				print "Query failed, <span style=\"color: blue;\"><pre>$sql</pre></style>\n";
+				print sqlite_error_string (sqlite_last_error($this->dbres));
+				$page->footer();
+				exit;
+		}
+	}
+
+	function count() {
+		return sqlite_num_rows($this->result);
+	}
+
+	function rewind() { //just to abstract from sqlite
+		sqlite_rewind($this->result);
+	}
+	
+}
+
+
+$db = new SQLiteDatabase("$dbfile");
+
+?>
diff --git a/www/inc/exif.inc.php b/www/inc/exif.inc.php
index f78741e..7b8262d 100644
--- a/www/inc/exif.inc.php
+++ b/www/inc/exif.inc.php
@@ -99,7 +99,7 @@ if ($exif_prog=="php4") {
 			}
 			echo "<tr>\n";
 			echo "<td></td>";
-			echo "<td><a href=\"javascript:toggle_exif()\">" . __("Less info");
+			echo "<td><a href=\"javascript:toggle_div('exif_table');toggle_div('exif_line');\">" . __("Less info");
 			echo "</a></td>";
 			echo "</tr>\n";
 			echo "</table>\n";
@@ -136,7 +136,7 @@ if ($exif_prog=="php4") {
 				 }
 			}
 
-			echo "<a href=\"javascript:toggle_exif()\">" . __("More info");
+			echo "<a href=\"javascript:toggle_div('exif_table');toggle_div('exif_line');\">" . __("More info");
 			echo "</a></p>\n";
 			echo "</div>\n";
  		}
diff --git a/www/inc/funkce.inc.php b/www/inc/funkce.inc.php
index be897f7..e45d725 100644
--- a/www/inc/funkce.inc.php
+++ b/www/inc/funkce.inc.php
@@ -1,66 +1,4 @@
 <?php
-function navigation ($gallery, $snapshot, $image) {
-   global $gallery_dir, $root, $ThisScript, $textnav, $img, 
-          $show_thumbs, $exif_style, $PNthumbScale;
-
-   $next = $snapshot + 1;
-   $prev = $snapshot - 1;
-
-   if (!$image) { // this will render a navigation bar - max 3 buttons
-      echo "\n<div class=\"navbuttons\">\n";
-      echo "<div class=\"navbuttonsshell\">\n";
-      if ($snapshot > 1) { //previous 
-         echo "<a id=\"previcon\" href=\"$ThisScript?galerie=$gallery&amp;photo=$prev";
-         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\"";
-				 echo " accesskey=\"p\">";
-         echo "&lt; <span class=\"accesskey\">P</span>revious</a>\n";
-      }
-      echo "&nbsp;";
-      if (is_file("$gallery_dir/$gallery/lq/img-$next.jpg")) { //next
-         echo "<a id=\"nexticon\" href=\"$ThisScript?galerie=$gallery&amp;photo=$next";
-         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\"";
-				 echo " accesskey=\"n\">";
-         echo "<span class=\"accesskey\">N</span>ext &gt;</a>\n";
-      }
-      echo "</div>\n</div>\n";
-   } elseif ($image=="prev") { //previous thumbnail
-      if ($snapshot > 1) { //previous 
-         echo "<div class=\"prevthumb\">";
-         echo "<a href=\"$ThisScript?galerie=$gallery&amp;photo=$prev";
-         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\">";
-         if (file_exists("$gallery_dir/$gallery/thumbs/img-$prev.png")) {
-            $Pthumb = "$gallery_dir/$gallery/thumbs/img-$prev.png";
-         } else {
-            $Pthumb = "$gallery_dir/$gallery/thumbs/img-$prev.jpg";
-         }
-         $v = getimagesize("$root/$Pthumb");
-         echo "<img alt=\"Previous\" src=\"";
-         echo $Pthumb . "\" width=\"" . round($v[0]/$PNthumbScale);
-         echo "\" height=\"" . round($v[1]/$PNthumbScale) . "\" />";
-         echo "<br />" . __('Previous');
-         echo "</a></div>\n";
-      }
-   } else { //next thumbnail
-      if (is_file("$gallery_dir/$gallery/lq/img-$next.jpg")) {
-         echo "<div class=\"nextthumb\">";
-         echo "<a href=\"$ThisScript?galerie=$gallery&amp;photo=$next";
-         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\">";
-         if (file_exists("$gallery_dir/$gallery/thumbs/img-$next.png")) {
-            $Nthumb = "$gallery_dir/$gallery/thumbs/img-$next.png";
-         } else {
-            $Nthumb = "$gallery_dir/$gallery/thumbs/img-$next.jpg";
-         }
-         $v = getimagesize("$root/$Nthumb");
-         echo "<img alt=\"Next\" src=\"";
-         echo $Nthumb . "\" width=\"" . round($v[0]/$PNthumbScale);
-         echo "\" height=\"" . round($v[1]/$PNthumbScale) . "\" />";
-         //echo "<br /><span class=\"accesskey\">N</span>ext";
-         echo "<br />" . __('Next') ;	 
-         echo "</a></div>\n";
-      }
-   }
-
-}
 
 function check($file) {
    global $gallery_dir, $page;
diff --git a/www/inc/global.js b/www/inc/global.js
index ff8ec21..048af85 100644
--- a/www/inc/global.js
+++ b/www/inc/global.js
@@ -65,15 +65,12 @@ function toggle_comment() {
     }
 }
 
-function toggle_exif() {
-	var exif_table = document.getElementById('exif_table');
-	var exif_line = document.getElementById('exif_line');
-    if(exif_table.style.display == 'none') {
-			exif_table.style.display = 'block';
-			exif_line.style.display = 'none';
+function toggle_div(classname) {
+	var div = document.getElementById(classname);
+    if(div.style.display == 'none') {
+			div.style.display = 'block';
 		} else {
-			exif_table.style.display = 'none';
-			exif_line.style.display = 'block';
+			div.style.display = 'none';
 		}
 }
 
diff --git a/www/inc/header.inc.php b/www/inc/header.inc.php
index 483b6ef..970c651 100644
--- a/www/inc/header.inc.php
+++ b/www/inc/header.inc.php
@@ -1,14 +1,20 @@
 <div class="stylenavbar">
-[ style: 
-<?php
-foreach ($themes as $skin => $url) {
-      echo "<a href=\"#\" title=\"$skin\"";
-      echo " onclick=\"setActiveStyleSheet('$skin')\">";
-      echo "$skin</a> \n";
-}
-?>
-]
+	<div id="styleshiden" style="display: block;">
+	<p><a href="javascript:toggle_div('styleshiden');toggle_div('stylesshown');">show styles</a></p>
+	</div>
+	<div id="stylesshown" style="display: none;">
+	<ul>
+	<?php
+	foreach ($themes as $skin => $url) {
+				echo "<li><a href=\"javascript:setActiveStyleSheet('$skin')\" title=\"$skin\">";
+				echo "$skin</a></li> \n";
+	}
+	?>
+	</ul>
+	<p><a href="javascript:toggle_div('styleshiden');toggle_div('stylesshown');">hide styles</a></p>
+	</div>
 </div>
+
 <?php
 echo "<h1 class=\"title\"><a href=\"http://$HostName$ThisScript\">Photo Gallery<span /></a></h1>\n\n";
 ?>
diff --git a/www/inc/photo.class.inc.php b/www/inc/photo.class.inc.php
new file mode 100644
index 0000000..10b507d
--- /dev/null
+++ b/www/inc/photo.class.inc.php
@@ -0,0 +1,279 @@
+<?php
+/* Photo class for dealing with individual images
+
+*/
+
+class C_photo {
+	var $id;
+	var $preview;
+	var $previewsize;
+	var $mq;
+	var $hq;
+	var $name;
+	var $caption;
+	var $file;
+	var $number;
+	var $counter;
+	var $album;
+	var $comments; //rendered string
+
+	function C_photo($file, $number) {
+		global $root, $gallery_dir, $galerie, $db;
+		
+		$this->file = $file;
+		$this->number = $number;
+		$this->album = $galerie;
+		//init from filesystem
+		//preview
+		$this->preview = "$gallery_dir/$galerie/lq/img-" . $this->number . ".jpg";
+		$this->previewsize = getimagesize($this->preview);
+		//MQ
+		if (file_exists("$root/$gallery_dir/$galerie/mq/img-" . $this->number . ".jpg")) {
+			$this->mq = "$gallery_dir/$galerie/mq/img-" . $this->number . ".jpg";
+		}
+		//HQ
+		if (file_exists("$root/$gallery_dir/$galerie/hq/img-" . $this->number . ".jpg")) {
+			$this->hq = "$gallery_dir/$galerie/hq/img-" . $this->number . ".jpg";
+		}
+		if ($GLOBALS['have_sqlite']) { //query just once
+			require_once("$root/inc/db.class.inc.php");
+			$sql = "select * from photo where ";
+			$sql .= "number=" . $this->number . " and ";
+			$sql .= "album='" . $this->album . "'";
+			$db->query($sql);
+		}
+		$this->readCaption();
+		$this->readCounter(); //reads access log number
+		if ($GLOBALS['have_sqlite']) { //need to get photo id first
+			if (!$db->count()) {//no record for this photo, let's update the record
+				//FIXME - if no photo data in db, create a unique index for it
+				//and add number, album, caption and views.
+				$sql = "insert into photo (name, caption, counter, number, album)";
+				$sql .= " values (";
+				$sql .= "\"" . $this->name . "\", ";
+				$sql .= "\"" . $this->caption . "\", ";
+				$sql .= $this->counter . ", ";
+				$sql .= $this->number . ", ";
+				$sql .= "\"" . $this->album . "\"";
+				$sql .= ")";
+				$db->query($sql);
+				print "\n\n<!-- We've moved the data to the database.-->";
+				//now we still need to query for the id
+				$sql = "select id from photo where ";
+				$sql .= "number=" . $this->number . " and ";
+				$sql .= "album='" . $this->album . "'";
+				$db->query($sql);
+			}
+			$db->rewind();
+			$resultarray = sqlite_fetch_array($db->result);
+			$this->id = $resultarray["id"];
+			print "\n\n<!-- image id: " . $this->id . " -->\n";
+		}
+		$this->readComments();
+	}
+
+	function readCaption() {
+		global $have_sqlite, $root, $gallery_dir, $galerie, $db;
+		
+		/* reads name and caption of a photo
+		   - either from sqlite database or filesystem
+		 */
+		 if ($have_sqlite) {
+				//try reading from sqlite
+				if ($db->count()) {
+					$result = sqlite_fetch_array($db->result);
+					$this->name = $result["name"];
+					$this->caption = $result["caption"];
+					return; //no need to fallback anymore
+				}
+		 } 
+		 
+		 //we falback to filesystem
+		  $buffer = "";
+			$captionfile = "$root/$gallery_dir/$galerie/comments/" . $this->number . ".txt";
+			$fh = @fopen($captionfile, "r");
+			if ($fh) {
+				 while (!feof($fh)) {
+						 $buffer .= fgets($fh, 4096);
+				 }
+				 fclose($fh);
+			} else { // no caption file
+				$this->name = __("Photo ") . $this->number;
+				return;
+			}
+			//parse buffer
+			if(eregi("^<span>(.*)</span>( - )?(.*)", $buffer, $x)) {
+				$this->name = $x[1]; //mostly "Photo"
+				$this->caption = chop($x[3]);
+			} else {
+				$this->caption = $buffer;
+			}
+	}
+	
+	function readCounter() {
+		global $log_access, $root, $gallery_dir, $galerie, $db;
+
+		if ($GLOBALS['have_sqlite']) {
+			//try reading from sqlite
+			if ($db->count()) {
+				$db->rewind();
+				$result = sqlite_fetch_array($db->result);
+				$this->counter = $result["counter"];
+				return; //no need to fallback anymore
+			}
+		} 
+		//we fallback to filesystem :/
+		 if (is_writable("$root/$gallery_dir/$galerie/comments")) { // needs perms
+			 $log = "$root/$gallery_dir/$galerie/comments/log_" . $this->number . ".txt";
+			 if (file_exists($log)){
+				 $fh = @fopen($log, "r");
+				 $this->counter = rtrim(fgets($fh));
+				 fclose($fh);
+			 } else {
+				 $this->counter = 0;
+			 }
+		 } else {
+			 //doesn't do anything if no perms
+			 print "<!-- ". __('WARNING: comment dir not writable') . "-->\n";
+			 return 0; //failure
+		 }
+		 return 1; //success
+	}
+
+	function readComments() {
+		global $root, $gallery_dir, $galerie, $db;
+		
+		if ($GLOBALS['have_sqlite']) {
+			//we have and will use SQLite
+			//FIXME
+			print "\n<!--SQLITE comments FIXME-->\n\n";
+			return 1;
+		} else {
+			//filesystem
+		 	$comments = "$root/$gallery_dir/$galerie/comments/user_" . $this->number . ".txt";
+			if (file_exists($comments)){
+				$buffer = "";
+				$fh = @fopen($comments, "r");
+				if ($fh) {
+					 while (!feof($fh)) {
+							 $buffer .= fgets($fh, 4096);
+					 }
+					 $this->comments = $buffer;
+					 fclose($fh);
+				}
+			}
+		}
+	}
+	
+	function renderCounter() {
+		
+		 print "\n<div id=\"log\">\n";
+		 print __('This image has been viewed') . " ";
+		 print "<strong>" . $this->counter . "</strong>". " " . __('times') . ".";
+		 print "</div>\n\n";
+		 $this->writeCounter(); //save state
+
+	}
+
+	function writeCounter() {
+		global $log_access, $root, $gallery_dir, $galerie, $page, $db;
+
+		$this->counter++; //we add to counter
+		if ($GLOBALS['have_sqlite']) {
+			//we have SQLite
+			$sql = "update photo set counter=" . $this->counter;
+			$sql .= " where id=" . $this->id;
+			$db->query($sql);
+			return; //no need to fallback anymore
+		} 
+		 //fallback to filesystem
+		 if (is_writable("$root/$gallery_dir/$galerie/comments")) { // needs perms
+			 $log = "$root/$gallery_dir/$galerie/comments/log_". $this->number .".txt";
+			 if (!is_writable($log)) {
+				 print "\n\n\n<!-- cannot open $log. Check permissions.";
+				 print "\nAborting counter write -->\n";
+				 return 0;
+			 }
+			 $fh = fopen($log,"w");
+			 if (!fwrite($fh, $this->counter . "\n")) {
+					$page->error( __('Could not write to') . $log . "!");
+					$page->footer();
+					exit; //stop everything
+			 }
+			 fclose($fh);
+		 }
+	}
+
+	function renderBigSize() {
+
+   if ($this->mq || $this->hq) {
+		 print "<div id=\"mqhq\">";
+		 if ($this->mq) {
+				print "<a href=\"" . $this->mq . "\">". __('MQ') . "</a> ";
+		 }
+		 if ($this->hq) {
+				print "<a href=\"" . $this->hq . "\">" . __('HQ') . "</a>";
+		 }
+		 print "</div>\n";
+	 }
+	}
+
+	function renderPreview() {
+
+   $divheight = $this->previewsize[1] + 10;
+   print "<div id=\"image\" style=\"height: ${divheight}px\">\n"; // extra kludge 
+                                                                 // because of tall 
+                                                                 // images
+
+   print "<img id=\"preview\" " . $this->previewsize[3] . " src=\"". $this->file;
+	 print "\" alt=\"$snimek\" />\n";
+	}
+
+	function renderCaption() {
+	
+		print "<div class=\"comment\">";
+		print "<span>" . $this->name . "</span>";
+		if ($this->caption) {
+			print " &ndash; ";
+			print $this->caption;
+			print "</div>";
+		}
+	}
+
+	function addComment($comment_name, $comment_data) { //adds comment to file or database
+		global $log_access, $root, $gallery_dir, $galerie, $page;
+
+		if ($GLOBALS['have_sqlite']) {
+			//sqlite
+			print "\n<!--SQLITE comments addition FIXME-->\n\n";
+		} else {
+				//filesystem
+				if (is_writable("$root/$gallery_dir/$galerie/comments")) { // needs perms
+					$comment = "$root/$gallery_dir/$galerie/comments/user_";
+					$comment .= $this->number . ".txt";
+					if (file_exists($comment) && !is_writable($comment)) {
+							$page->error("Permission Denied", __('Could not write to')  . $comment . 
+								"!\n Check permissions.\n");
+							$page->footer();
+							exit; //stop everything
+					}
+
+					$fh = fopen("$comment", "a");
+					if (!$comment_name) {
+							$comment_name = __('Anonymous');
+					}
+					if (!fwrite($fh, "<div class=\"commententry\">\n")) {
+							$page->error("Write Failed",  __('Could not write to')  . $comment . "!" );
+							$page->footer();
+							exit; //stop everything
+					}
+					fwrite($fh, "   <div class=\"name\">" . __('Comment from') . "<em>$comment_name</em></div>\n",90);
+					fwrite($fh, "   <div class=\"commentdata\">$comment_data</div>\n",280);
+					fwrite($fh, "</div>\n");
+					
+					fclose($fh);
+				}
+		}
+	}
+}
+?>
diff --git a/www/inc/www.class.inc.php b/www/inc/www.class.inc.php
index 2206382..27683cc 100644
--- a/www/inc/www.class.inc.php
+++ b/www/inc/www.class.inc.php
@@ -188,7 +188,150 @@ class C_www {
 			echo "</div>\n";
    }
 
-	   
+	
+	function navigation ($gallery, $snapshot, $image) {
+   global $gallery_dir, $root, $ThisScript, $textnav, $img, 
+          $show_thumbs, $exif_style, $PNthumbScale;
+
+   $next = $snapshot + 1;
+   $prev = $snapshot - 1;
+
+   if (!$image) { // this will render a navigation bar - max 3 buttons
+      echo "\n<div class=\"navbuttons\">\n";
+      echo "<div class=\"navbuttonsshell\">\n";
+      if ($snapshot > 1) { //previous 
+         echo "<a id=\"previcon\" href=\"$ThisScript?galerie=$gallery&amp;photo=$prev";
+         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\"";
+				 echo " accesskey=\"p\">";
+         echo "&lt; <span class=\"accesskey\">P</span>revious</a>\n";
+      }
+      echo "&nbsp;";
+      if (is_file("$gallery_dir/$gallery/lq/img-$next.jpg")) { //next
+         echo "<a id=\"nexticon\" href=\"$ThisScript?galerie=$gallery&amp;photo=$next";
+         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\"";
+				 echo " accesskey=\"n\">";
+         echo "<span class=\"accesskey\">N</span>ext &gt;</a>\n";
+      }
+      echo "</div>\n</div>\n";
+   } elseif ($image=="prev") { //previous thumbnail
+      if ($snapshot > 1) { //previous 
+         echo "<div class=\"prevthumb\">";
+         echo "<a href=\"$ThisScript?galerie=$gallery&amp;photo=$prev";
+         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\">";
+         if (file_exists("$gallery_dir/$gallery/thumbs/img-$prev.png")) {
+            $Pthumb = "$gallery_dir/$gallery/thumbs/img-$prev.png";
+         } else {
+            $Pthumb = "$gallery_dir/$gallery/thumbs/img-$prev.jpg";
+         }
+         $v = getimagesize("$root/$Pthumb");
+         echo "<img alt=\"Previous\" src=\"";
+         echo $Pthumb . "\" width=\"" . round($v[0]/$PNthumbScale);
+         echo "\" height=\"" . round($v[1]/$PNthumbScale) . "\" />";
+         echo "<br />" . __('Previous');
+         echo "</a></div>\n";
+      }
+   } else { //next thumbnail
+      if (is_file("$gallery_dir/$gallery/lq/img-$next.jpg")) {
+         echo "<div class=\"nextthumb\">";
+         echo "<a href=\"$ThisScript?galerie=$gallery&amp;photo=$next";
+         echo "&amp;exif_style=$exif_style&amp;show_thumbs=$show_thumbs\">";
+         if (file_exists("$gallery_dir/$gallery/thumbs/img-$next.png")) {
+            $Nthumb = "$gallery_dir/$gallery/thumbs/img-$next.png";
+         } else {
+            $Nthumb = "$gallery_dir/$gallery/thumbs/img-$next.jpg";
+         }
+         $v = getimagesize("$root/$Nthumb");
+         echo "<img alt=\"Next\" src=\"";
+         echo $Nthumb . "\" width=\"" . round($v[0]/$PNthumbScale);
+         echo "\" height=\"" . round($v[1]/$PNthumbScale) . "\" />";
+         //echo "<br /><span class=\"accesskey\">N</span>ext";
+         echo "<br />" . __('Next') ;	 
+         echo "</a></div>\n";
+      }
+   }
+	}
+
+	function user_comments($photo) {
+		global $root, $gallery_dir, $galerie, $comments, $picture;
+
+   if ($comments) {
+		 if (is_writable("$root/$gallery_dir/$galerie/comments")) { // needs perms
+			 require("inc/comment_form.inc.php");
+
+			 if ($picture->comments) {
+					print "<div class=\"user_comment\">";
+					print $picture->comments;
+					print "</div>";
+			 }
+		 } else {
+			 print "<!-- WARNING: comment dir not writable -->\n";
+		 }
+   }
+	}
+
+	function process_comment_form() { // processing of the user comment data
+		global $comments, $root, $gallery_dir, $galerie, $snimek;
+		
+		if($comments && @$_POST["commentdata"]) {
+				$username = @$_COOKIE["username"];
+				$comment_name = @$_POST["commentname"];
+				$save_comment_name = @$_POST["savecommentname"];
+				$comment_data = @$_POST["commentdata"];
+				$comment_kolacek = @$_POST["commentkolacek"];
+				$comment_spamcheck = @$_POST["commentspamcheck"];
+
+				#check for HTML tags
+				
+				$comment_name = stripslashes(strip_tags($comment_name));
+				$allowedTags = '<a><b><i><ul><li><blockquote><br>';
+				$comment_data = stripslashes(strip_tags($comment_data,$allowedTags));
+				// thanks google: 
+				// http://www.google.com/googleblog/2005/01/preventing-comment-spam.html
+				$comment_data = eregi_replace("<a ","<a rel=\"nofollow\" ",$comment_data);
+
+				#further comment spam
+				$comment_blacklist = array("pharmacy", "poker", "Viagra");
+
+				foreach($comment_blacklist as $blackword) {
+					$check = addslashes($blackword);
+					if (eregi($check,$comment_data)) {
+						#write error message
+						$this->error( __('No comment spam'), __('Your comment includes blacklisted word') . __('No comment spam') );
+						$this->footer();
+						exit; //stop everything
+					}
+				}
+
+				if ($comment_kolacek!=md5($comment_spamcheck)) {
+						$this->error( __('No comment spam'), __('You ve written the check number wrong' ) );
+						$this->footer();
+						exit; //stop everything
+				}
+
+				if (!$comment_name) {
+					$comment_name = $_COOKIE["username"];
+				}
+				
+				// ok so we got a comment
+				if ($comment_name && $save_comment_name) {
+				// save out name in a cookie
+					if (!setcookie("username","$comment_name", 
+											mktime(0, 0, 0, 12, 30, 2030))) {
+						print __('Could not set name cookie!');
+						exit;
+					}
+				}
+
+				// create a user_comment file if not existant or append to it
+				if (!$picture) {
+				  require_once("$root/inc/photo.class.inc.php");
+					$path = "$gallery_dir/$galerie/lq";
+					$file = "$path/img-$snimek.jpg";
+					$picture = new C_photo($file, $snimek);
+				}
+				$picture->addcomment($comment_name, $comment_data);
+		}
+	}
 }
 
 # return dirs sorted