Docx-merger NPM

Docx-merger

Javascript Library for Merging Docx file in NodeJS and Browser Environment.

Purpose

To merge docx file using javascript which has rich contents.

The Library Preserves the Styles, Tables, Images, Bullets and Numberings of input files.

Installation

npm install docx-merger

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Usage Nodejs

Read input files as binary and pass it to the DocxMerger constructor fuction as a array of files.

Then call the save function with first argument as nodebuffer, check the example below.

var DocxMerger = require('docx-merger');

var fs = require('fs');
var path = require('path');

var file1 = fs
    .readFileSync(path.resolve(__dirname, 'template.docx'), 'binary');

var file2 = fs
    .readFileSync(path.resolve(__dirname, 'template1.docx'), 'binary');

var docx = new DocxMerger({},[file1,file2]);


//SAVING THE DOCX FILE

docx.save('nodebuffer',function (data) {
    // fs.writeFile("output.zip", data, function(err){/*...*/});
    fs.writeFile("output.docx", data, function(err){/*...*/});
});

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Usage Browser

Async Load files using jszip-utils and then call the callback in the innermost callback.
Call the save function wit first argument as blob.
Better use Promises instead of callbacks.
Callback causes callback hell issue.

Using Callback

<html>
<script src="../dist/docx-merger.min.js"></script>
<script src="https://fastcdn.org/FileSaver.js/1.1.20151003/FileSaver.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils.min.js"></script>
<!--
Mandatory in IE 6, 7, 8 and 9.
-->
<!--[if IE]>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils-ie.min.js"></script>
<![endif]-->
<script>
  function loadFile(url,callback){
      JSZipUtils.getBinaryContent(url,callback);
  }
  loadFile("template.docx",function(error,file1){
      loadFile("template1.docx",function(error,file2){

          var docx = new DocxMerger({},[file1,file2]);

          docx.save('blob',function (data) {
              saveAs(data,"output.docx");
          });
      })
  })
</script>
</html>

Using Promise

<html>
<script src="../dist/docx-merger.min.js"></script>
<script src="https://fastcdn.org/FileSaver.js/1.1.20151003/FileSaver.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils.min.js"></script>
<!--
Mandatory in IE 6, 7, 8 and 9.
-->
<!--[if IE]>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip-utils/0.0.2/jszip-utils-ie.min.js"></script>
<![endif]-->
<script>
  function loadFile(url,callback) {

      return new Promise(function (resolve, reject) {

          JSZipUtils.getBinaryContent(url, function (err, data) {
              if (err) reject(err);
              resolve(data);
          });
      });
  }
  Promise.all([loadFile("template.docx"), loadFile("template1.docx")]).then(function(files){

      var docx = new DocxMerger({},files);

      docx.save('blob',function (data) {
          saveAs(data,"output.docx");
      });

  },function (err) {
      alert(err);
  })
</script>
</html>