ExtendScript: Display ICC profile name of the selected linked image in dialog by Illustrator

showICC.jsx

/**
  * @file Display ICC profile name of the selected linked image in dialog by Illustrator  
  * [Getting Placed Image's ICC Profile with Illustrator ExtendScript](https://community.adobe.com/t5/illustrator-discussions/getting-placed-image-s-icc-profile-with-illustrator-extendscript/td-p/14569584)
  * @version 1.0.0
  * @author sttk3.com
  * @copyright © 2024 sttk3.com
*/

(function() {
  if(app.documents.length <= 0) {return ;}
  var doc = app.documents[0] ;
  var sel = doc.selection ;
  if(sel.length <= 0) {return ;}

  if(sel[0].constructor.name != 'PlacedItem') {return ;}
  var imageFile = sel[0].file ;
  
  try {
    loadXMPLibrary() ;

    var icc = getPropertyOfXMP(imageFile, 'http://ns.adobe.com/photoshop/1.0/', 'ICCProfile') ;
    alert(icc) ;
  } catch(e) {
    return ;
  } finally {
    unloadXMPLibrary() ;
  }
})() ;

/**
  * load xmp library
  * @return {boolean}
*/
function loadXMPLibrary() {
  if(!ExternalObject.AdobeXMPScript) {
    try {
      ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript') ;
    } catch(e) {
      alert('Unable to load the AdobeXMPScript library.') ;
      return false ;
    }
  }
  return true ;
}

/**
  * unload xmp library
*/
function unloadXMPLibrary() {
  if(ExternalObject.AdobeXMPScript) {
    try {
      ExternalObject.AdobeXMPScript.unload() ;
      ExternalObject.AdobeXMPScript = undefined ;
    } catch(e) {
      alert('Unable to unload the AdobeXMPScript library.') ;
    }
  }
}

/**
  * get xmp property value of target file
  * @param {File} targetFile target File object
  * @param {string} nameSpace e.g. 'http://purl.org/dc/elements/1.1/' (NS_DC)
  * @return {string|undefined}
*/
function getPropertyOfXMP(targetFile, nameSpace, propName) {
  var res ;
  if(!targetFile) {return res ;}
  
  try {
    var xmpFile = new XMPFile(targetFile.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_READ) ;
    var xmpPackets = xmpFile.getXMP() ;
    if(!xmpPackets) {return res ;}
    
    var xmpMetaObj = new XMPMeta(xmpPackets.serialize()) ;
    if(xmpMetaObj.doesPropertyExist(nameSpace, propName)) {
      res = xmpMetaObj.getProperty(nameSpace, propName).toString() ;
    }
  } finally {
    xmpFile.closeFile(XMPConst.CLOSE_UPDATE_SAFELY) ;
  }
  
  return res ;
}