textract/lib/extractors/xls.js

Extracting text from files of various type including html, pdf, doc, docx, xls, xlsx, csv, pptx, png, jpg, gif, rtf, text/*, and various open office.

var path = require( 'path' )
  , J = require( 'j' )
  ;

function extractText( filePath, options, cb ) {
  var CSVs, wb, result, error;

  try {
    wb = J.readFile( filePath );
    CSVs = J.utils.to_csv( wb );
  } catch ( err ) {
    error = new Error( 'Could not extract ' + path.basename( filePath ) + ', ' + err );
    cb( error, null );
    return;
  }

  result = '';
  Object.keys( CSVs ).forEach( function( key ) {
    result += CSVs[key];
  });

  cb( null, result );
}

module.exports = {
  types: ['application/vnd.ms-excel',
    'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
    'application/vnd.ms-excel.sheet.macroEnabled.12',
    'application/vnd.oasis.opendocument.spreadsheet',
    'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
    'application/vnd.oasis.opendocument.spreadsheet-template'
  ],
  extract: extractText
};