Extract Text from Viewer in Javascript

[muralidhar]

Hi,

i want to extract text from pdf document loaded in PDFXChange viewer and also i want to save file in server.

how to do that?

please help in this reagard.

thanks in advance.

[John - Tracker Supp]

Please do see the examples provided - there are examples for extracting a documents text - for example there are 2 in the VB folder for text operations - and others for non VB developers - once you have reviewed all, if you still have problems then please do come back - though some may require you to adapt the examples given to your own need or Development tool/language, as you are expected to do some work yourself to get what you need.

note also this post has been moved to the correct forum.

Hope That helps

[muralidhar]

Hi,

thanks for your reply.

i have already gone through the samples you mentioned. those are in C#, vb etc.
but i want to do the same in javascript.

i am trying to do that as follows, but i am getting javascript error

var datain;
var dataout;
document.all.PDFView.DoVerb("", "GetAllText", datain, dataout, 0);
======this is the error description
Line: 69
Error: Could not complete the operation due to error 82130001.
======

please help me.

thanks in advance.

[Vasyl - PDF-XChange]

Hi,

i have already gone through the samples you mentioned. those are in C#, vb etc.
but i want to do the same in javascript.

1. The right C# code:

Code: Select all

int docId = 0;
PDFView.GetActiveDocument(out docId);
if (docId > 0)
{
      // 1. extract all text to file or stream
      object dataIn = "C:\\TextFromPDF.txt"; // also, you can pass the stream object as destination
      object dataOut = null;
      PDFView.DoDocumentVerb(docId, "", "GetAllText", dataIn, out dataOut, 0);
      // 2. OR extract all text to simple string
      object dataIn = null;
      object dataOut = null;
      PDFView.DoDocumentVerb(docId, "", "GetAllText", dataIn, out dataOut, 0);
      // if succeeded - dataOut contains the all text from document
      string str = (string)dataOut;
};

2. You cannot call the DoVerb function from PDF Java-Script. By JS you may obtain the word list from each page separately.
The simple script for this:

Code: Select all

var text = "";
var numWords;
for (var p = 0; p < this.numPages; p++)
{
     numWords = this.getPageNumWords(p);
     for (var w = 0; w < numWords; w++) 
     {
         text += this.getPageNthWord(p, w, false);
     }
}
text;

- pass this script to RunJavaScript(...), it will return the string result.

Note: this method may be too slow and will return some different result than the normal "GetAllText" operation...

HTH