+
+function create_thumbnail ($filename, $destfile) {
+ $ext = strtolower (ext_safe ($filename));
+ if ($ext == "jpg" || $ext == "jpeg") {
+ $image = imagecreatefromjpeg ($filename);
+ } else if ($ext == "png") {
+ $image = imagecreatefrompng ($filename);
+ } else {
+ return false;
+ }
+
+ if ($image === false) {
+ return false;
+ }
+
+ if (defined (THUMBSMAXSIZE) && (THUMBSMAXSIZE > 0)) {
+ $thumbsmaxsize = THUMBSMAXSIZE;
+ } else {
+ $thumbsmaxsize = 400; // default value;
+ }
+
+ $width = imageSX ($image);
+ $height = imageSY ($image);
+ if (($width <= $thumbsmaxsize) || ($height <= $thumbsmaxsize)) {
+ return false;
+ }
+
+ if ($width > $height) {
+ $thumb_width = $thumbsmaxsize;
+ $thumb_height = $height * ($thumbsmaxsize / $width);
+ } else if ($width < $height) {
+ $thumb_width = $width * ($thumbsmaxsize / $height);
+ $thumb_height = $thumbsmaxsize;
+ } else if ($width == $height) {
+ $thumb_width = $thumbsmaxsize;
+ $thumb_height = $thumbsmaxsize;
+ }
+
+ $thumb_image = ImageCreateTrueColor ($thumb_width, $thumb_height);
+ if ($thumb_image === false) {
+ return false;
+ }
+ if (!imagecopyresampled ($thumb_image, $image, 0, 0, 0, 0,
+ $thumb_width, $thumb_height, $width, $height)) {
+ return false;
+ }
+
+ if ($ext == "jpg" || $ext == "jpeg") {
+ if (!imagejpeg ($thumb_image, $destfile, 100)) {
+ return false;
+ }
+ } else if ($ext == "png") {
+ if (!imagepng ($thumb_image, $destfile)) {
+ return false;
+ }
+ }
+
+ imagedestroy ($image);
+ imagedestroy ($thumb_image);
+
+ return true;
+}
+
+function safe_create_dir ($dirname) {
+ if (is_dir ($dirname)) {
+ return;
+ }
+ if (file_exists ($dirname)) {
+ par_error ($dirname . ": " . trans ('exist but is not a directory'));
+ }
+ if (!mkdir ($dirname)) {
+ par_error ($dirname . ": " . trans ('could not create directory'));
+ } else {
+ par_success ($dirname . ": " . trans ('directory created'));
+ }
+}
+
+function safe_create_writable_dir ($dirname) {
+ safe_create_dir ($dirname);
+ if (!is_writeable ($dirname) || !is_executable ($dirname)) {
+ par_error ($dirname . ": " . trans ('could not write in directory'));
+ }
+}
+
+function leave () {
+ exit ("\n</body></html>");
+}
+function par_success ($message) {
+ printf ("<p class=\"success center\">%s</p>", $message);
+}
+function par_error ($message) {
+ printf ("<p class=\"error center\">%s</p>", $message);
+ leave ();
+}
+function par_warn ($message) {
+ printf ("<p class=\"warn center\">%s</p>", $message);
+}