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G
Gustavo Del Vechio
Inspiring
April 19, 2013
Answered

Write metadata "instructions"

  • April 19, 2013
  • 1 reply
  • 1988 views

Hi

I´m trying to edit the metadata "instructions" in some photos vieweb by Bridge. At true, I need to preserve what´s already written in this field, then add some more things via script.

Here´s my try:

var doc = app.document;

doc.selectAll();

var sel = doc.getSelection ("psd, ai, tif, tiff, jpg, png, bmp, jpeg");

if (ExternalObject.AdobeXMPScript==undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");

for (var g=0 ; g<sel.length ; g++){

     var xFile = new XMPFile (sel.spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE);

     var xmp = xFile.getXMP();

     var x = sel.metadata;

     var instruc = new String (x.read ("http://ns.adobe.com/photoshop/1.0/", "Instructions"));

     instruc = instruc + "<test bonus instruction>";

     //up to this line, everything is right

     xmp.deleteProperty (XMPConst.NS_XML, "instructions") //problem is this line and/or the line below. It does not return error, but do not write too.

     xmp.appendArrayItem(XMPConst.NS_XML, "instructions", instruc, 0, XMPConst.ARRAY_IS_ORDERED); //problem can be here.

};

if (xFile.canPutXMP(xmp)){

     xFile.putXMP(xmp);

     xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY);

};

What Am I missing?

Thank you a lot for the help

Best Regards

Gustavo.

This topic has been closed for replies.
Correct answer Paul Riggott

You could try this...

var doc = app.document;
doc.selectAll();
var sel = doc.getSelection ("psd, ai, tif, tiff, jpg, png, bmp, jpeg");
if (ExternalObject.AdobeXMPScript==undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
for (var g=0 ; g<sel.length ; g++){
     var xFile = new XMPFile (sel.spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE);
     var xmp = xFile.getXMP();
     var instruc = xmp.getProperty (XMPConst.NS_PHOTOSHOP, "Instructions"); 
     instruc += "<test bonus instruction>";
     xmp.deleteProperty (XMPConst.NS_PHOTOSHOP, "Instructions"); 
     xmp.setProperty(XMPConst.NS_PHOTOSHOP, "Instructions", instruc);
if (xFile.canPutXMP(xmp)){
     xFile.putXMP(xmp);
     xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY);
    };
};

1 reply

M
Muppet Mark
Inspiring
April 20, 2013

Gustavo… XMP is not one of my great strengths so I may well be wrong… Anyhows I don't this the instructions property is an Array but a simple String…

#target bridge
if ( loadXMPLibrary() ) { processThumbnails() };
if ( unloadXMPLibrary() ) { alert( 'were done' ) };
/*
     Process the thumbnails in Bridge
*/
function processThumbnails() {
  
     var i, count, doc, smd, inst;
  
     doc = app.document;
  
     count  = doc.visibleThumbnailsLength;
  
     for ( i = 0; i < count; i++ ) {
  
          if ( /\.(ai|bmp|jpg|jpeg|png|psd|tif+)$/.test( doc.visibleThumbnails.name ) ) {
  
               if ( doc.visibleThumbnails.hasMetadata ) {
  
                    smd = doc.visibleThumbnails.synchronousMetadata;
  
                    inst = smd.read( 'http://ns.adobe.com/photoshop/1.0/', 'Instructions' );
  
                    undateXMP( doc.visibleThumbnails, inst );
  
               };
  
          };
  
     };
  
};
/*
     Update the XMP properties…
*/
function undateXMP( thumb, inst ) {
  
     var xmpFile, xmp;
  
     xmpFile = new XMPFile( thumb.spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE );
                     
     xmp = xmpFile.getXMP();
                     
     inst += ', elmo';
  
     // The line below returns an XMP error the property is NOT an Array…
  
     //xmp.appendArrayItem( 'http://ns.adobe.com/photoshop/1.0/', 'Instructions', XMPConst.PROP_IS_ARRAY, inst, XMPConst.ARRAY_IS_ORDERED );
  
     xmp.setProperty( 'http://ns.adobe.com/photoshop/1.0/', 'Instructions', inst, 0, XMPConst.STRING );
  
     if ( xmpFile.canPutXMP( xmp ) ) {
  
          xmpFile.putXMP( xmp );
                     
          xmpFile.closeFile( XMPConst.CLOSE_UPDATE_SAFETY  );
                     
     };
  
};
/*
     Load the XMP External Object Library
*/
function loadXMPLibrary() {
     if ( !ExternalObject.AdobeXMPScript ) {
  
          try {
  
               ExternalObject.AdobeXMPScript = new ExternalObject( 'lib:AdobeXMPScript' );
  
               return true;
          } catch(e) { return false; };
  
     };
};
/*
     Unload the XMP External Object Library
*/
function unloadXMPLibrary() {
     if ( ExternalObject.AdobeXMPScript ) {
          try {
               ExternalObject.AdobeXMPScript.unload();
  
               ExternalObject.AdobeXMPScript = undefined;
  
               return true;
          } catch(e) { return false; };
     };
};
G
Gustavo Del VechioAuthor
Inspiring
April 22, 2013

Hi Muppet

Thank you a lot for your help. If this not subject is not your strenght, for me, metadata is very confused and difficult hehehe.

I tried to change the line you pointed (array to string). The script runned without erros, but instructions were not written in the files. It´s not working yet.

The other field (creator) writes normally.

Any other suggestion?

Thank you so much

Best Regards

Gustavo

M
Muppet Mark
Inspiring
April 22, 2013

Did you try my snippet as is…? XMP like a lot of other things I am still learning myself… The never ending saga goes on…

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