From 36df6fa3069d55db3c35724c4f465bde9c50b53a Mon Sep 17 00:00:00 2001
From: Andreas Gohr <andi@splitbrain.org>
Date: Sun, 31 Jul 2005 18:35:54 +0200
Subject: image metadata editor

This patch adds an meta data editor for JPEG files. Currently title,
caption, artist, copyright and keywords can be saved. The data is saved
to the apropriate IPTC fields. Additional fields can be added in the
appropriate template.

Compatibility testing with other programs is needed!

darcs-hash:20050731163554-7ad00-dd936ec19549203dcf72de8774309c0b17d0b679.gz
---
 inc/JpegMeta.php | 58 +++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 47 insertions(+), 11 deletions(-)

(limited to 'inc/JpegMeta.php')

diff --git a/inc/JpegMeta.php b/inc/JpegMeta.php
index b9f0908d4..408f34589 100644
--- a/inc/JpegMeta.php
+++ b/inc/JpegMeta.php
@@ -3,9 +3,10 @@
  * JPEG metadata reader/writer
  *
  * @license    PHP license 2.0 (http://www.php.net/license/2_02.txt)
- * @link       
+ * @link       http://www.zonageek.com/software/php/jpeg/index.php 
  * @author     Sebastian Delmont <sdelmont@zonageek.com>
  * @author     Andreas Gohr <andi@splitbrain.org>
+ * @todo       Add support for Maker Notes, Extend for GIF and PNG metadata
  */
 
 // This class is a modified and enhanced version of the JPEG class by
@@ -163,6 +164,40 @@ class JpegMeta
         return trim($info);
     }
 
+    /**
+     * Convinience function to set nearly all available Data
+     * through one function
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function setField($field, $value)
+    {
+        if(strtolower(substr($field,0,5)) == 'iptc.'){
+            return $this->setIPTCField(substr($field,5),$value);
+        }elseif(strtolower(substr($field,0,5)) == 'exif.'){
+            return $this->setExifField(substr($field,5),$value);
+        }else{
+            return $this->setExifField($field,$value);
+        }
+    }
+
+    /**
+     * Convinience function to delete nearly all available Data
+     * through one function
+     *
+     * @author Andreas Gohr <andi@splitbrain.org>
+     */
+    function deleteField($field)
+    {
+        if(strtolower(substr($field,0,5)) == 'iptc.'){
+            return $this->deleteIPTCField(substr($field,5));
+        }elseif(strtolower(substr($field,0,5)) == 'exif.'){
+            return $this->deleteExifField(substr($field,5));
+        }else{
+            return $this->deleteExifField($field);
+        }
+    }
+
     /**
      * Return a date field
      *
@@ -770,18 +805,19 @@ class JpegMeta
      * Save changed Metadata
      *
      * @author Sebastian Delmont <sdelmont@zonageek.com>
+     * @author Andreas Gohr <andi@splitbrain.org>
      */
     function save($fileName = "") {
-      if ($fileName == "") {
-        $tmpName = $this->_fileName . ".tmp";
-        $this->_writeJPEG($tmpName);
-        if (file_exists($tmpName)) {
-          rename($tmpName, $this->_fileName);
-        }
-      }
-      else {
-        $this->_writeJPEG($fileName);
-      }
+        if ($fileName == "") {
+            $tmpName = tempnam(dirname($this->_fileName),'_metatemp_');
+            $this->_writeJPEG($tmpName);
+            if (@file_exists($tmpName)) {
+                return rename($tmpName, $this->_fileName);
+            }
+        } else {
+            return $this->_writeJPEG($fileName);
+        }
+        return false;
     }
     
     /*************************************************************/
-- 
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