Bdtjtk

I am using an Arch Linux system with KDE plasma. I have approximately 50mb XML, and I need to parse it. The file has custom tags.

Example XML:

<JMdict>

   <entry>

      <ent_seq>1000000</ent_seq>

      <r_ele>

         <reb>ヽ</reb>

      </r_ele>

      <sense>

         <pos>&unc;</pos>

         <gloss g_type="expl">repetition mark in katakana</gloss>

      </sense>

   </entry>

</JMdict>

I have tried many solutions that were suggested on Stack Overflow, and they did not work at all, and some of them could not installed to my system like xml-stream, xml2json. I decided to use xml2js (most of them suggest to use xml2js), and got the same result. How can I correctly use it ?
I am using this code but it always returns undefined:

const fs = require('fs-extra');

const xml2js = require('xml2js');

const parser = new xml2js.Parser();



const path = "test.xml";



fs.readFile(path, {encoding: 'utf-8'}, function(error, data) {

     parser.parseString(data, function(err, res) {

         console.log(res);

     });

});



Result: Undefined

Is there any way to handle an XML file by hand (without a package)?

Answer is below Working Example Link

var fs = require('fs'),

slash = require('slash'),

xml2js = require('xml2js');



var parser = new xml2js.Parser();



let filename = slash(__dirname+'/foo.xml');



// console.log(filename);



fs.readFile(filename,  "utf8", function(err, data) {



    if(err) {

        console.log('Err1111');

        console.log(err);

    } else {

        //console.log(data);

        // data.toString('ascii', 0, data.length)



        parser.parseString(data.replace(/&(?!(?:apos|quot|[gl]t|amp);|#)/g, '&'), function (err, result) {

            if(err) {

                console.log('Err');

                console.log(err);

            } else {

                console.log(JSON.stringify(result));

                console.log('Done');

            }            

        });

    }

});

Exact you have to do it below :

data.replace(/&(?!(?:apos|quot|[gl]t|amp);|#)/g, '&')

Problem is below tag only &unc;

<pos>&unc;</pos>

Referenced And Thanks to @tim

The way you use the xml2js package should be fine. However, the format of your xml is a little bit off.

if you add a console.log to see what's causing the error

fs.readFile(path, {encoding: 'utf-8'}, function(error, data) {

     parser.parseString(data, function(err, res) {

         if (err) console.log(err);



         console.log(res);

     });

});

You'll see that it's the line <pos>&unc;</pos> that causes the problem.
If you fix the HTML entities, the parser should works fine.

I think your problem is unescaped characters in your xml data.

I'm able to get your example to work by using this:

xml data:

<JMdict>

    <entry>

        <ent_seq>1000000</ent_seq>

        <r_ele>

            <reb>ヽ</reb>

        </r_ele>

        <sense>

             <pos>YOUR PROBLEM WAS HERE</pos>

             <gloss g_type="expl">repetition mark in katakana</gloss>

        </sense>

    </entry>

node.js code:

const fs = require('fs-extra');

const xml2js = require('xml2js');

const parser = new xml2js.Parser();



const path = "test.xml";



fs.readFile(path, {encoding: 'utf-8'}, function(error, data) {

     parser.parseString(data, function(err, res) {

         console.log(JSON.stringify(res.JMdict.entry, null, 4));

     });



});

In situations like this, when I know it should work fine, I always look at the data and for any possible issues with the input data.