AsposeEPSGetXmp

AsposeEPSGetXmp function

Reads PS/EPS file and extracts XmpMetdata if it already exists. If EPS file doesn’t contain XMP metadata we get new one filled with values from PS metadata comments (%%Creator, %%CreateDate, %%Title etc). EPS file with filled XMP metadata will be saved in fileNameResult.

function AsposeEPSGetXmp(
    fileBlob, 
    fileName, 
    fileNameResult
)

Parameter	Type	Description
fileBlob	Blob object	Content of source file.
fileName	string	Source file name.
fileNameResult	string	Result file name.

Return Value

JSON object

Field	Description
errorCode	code error (0 no error)
errorText	text error ("" no error)
XMP	array of metadata values
fileNameResult	result file name

Examples

  var fGetXmpMetadata = function (e) {
    const file_reader = new FileReader();
    file_reader.onload = (event) => {
      const json = AsposeEPSGetXMP(event.target.result, e.target.files[0].name, e.target.files[0].name + "_out.eps");
      if (json.errorCode == 0) {
          document.getElementById('output').textContent = json.XMP;
          DownloadFile(json.fileNameResult, "image/eps");
      }
      else 
        document.getElementById('output').textContent = json.errorText;
    }
    file_reader.readAsArrayBuffer(e.target.files[0]);
  }

Web Worker example:

  /*Create Web Worker*/
  const AsposePageWebWorker = new Worker("AsposePageforJS.js");
  AsposePageWebWorker.onerror = evt => console.log(`Error from Web Worker: ${evt.message}`);
  AsposePageWebWorker.onmessage = evt => document.getElementById('output').textContent = 
    (evt.data == 'ready') ? 'library loaded!' :
      (evt.data.json.errorCode == 0) ? `Result:\n${DownloadFile(evt.data.json.fileNameResult, "application/image", evt.data.params[0])}` : `Error: ${evt.data.json.errorText}`;

  /*Event handler*/
  const fPsAsPdf = e => {
    const file_reader = new FileReader();
    file_reader.onload = event => {
      /*Convert a Postscript to PNG and save - Ask Web Worker*/
      AsposePageWebWorker.postMessage({ "operation": 'AsposeEPSGetXMP', "params": [event.target.result, e.target.files[0].name,e.target.files[0].name + "_out.eps"] }, [event.target.result]);
    };
    file_reader.readAsArrayBuffer(e.target.files[0]);
  };

  /*Make a link to download the result file*/
  const DownloadFile = function (filename, mime, content) {
      mime = mime || "application/octet-stream";
      var link = document.createElement("a"); 
      link.href = URL.createObjectURL(new Blob([content], {type: mime}));
      link.download = filename;
      link.textContent = filename;
      link.title = "Click here to download the file";
      document.getElementById('fileDownload').appendChild(link);
      document.getElementById('fileDownload').appendChild(document.createElement("br"));
  }

See Also

• function XPSSaveAsImage