Read from file and write to file 'Ł' character with nodejs

Question

I have an ansi file with 'Ł' character I would like to read this character and save it to another file with the same encoding(to get 'Ł' character).

const fs = require('fs');
var content = fs.readFileSync('input.txt',null); //Ł
fs.writeFileSync('output.txt',content,null); //Ł how to get this?

How to do this with nodejs?

Update: I checked the input file:

file -i

text/plain charset=uknown-8bit

file -r

Non-ISO extended-ASCII, text with very long lines, with CRLF line terminators

Can I save the file with such details?

Define "ansi file" -- what **specific** encoding is the file using? When I try to save a file from Notepad with the "ANSI" option in the drop-down box (which I believe uses Windows-1252), it fails to save correctly, which makes me wonder if it has a mapping in that encoding... — T.J. Crowder, Jan 25 '17 at 17:23
That code should work (regardless of encoding). When you don't give `readFile`/`readFileSync` an encoding, it reads a raw buffer (no conversion of data). When you give `writeFile`/`writeFileSync` a buffer, it doesn't use an encoding, it just writes the data. — T.J. Crowder, Jan 25 '17 at 17:28
Yes, it actually works, I just need to figure out how to concatenate this character with the rest of my string and save it to file properly. — johnerfx, Jan 26 '17 at 08:02

score 0 · Accepted Answer · answered Jan 26 '17 at 13:18

I achieved what I wanted by creating binary strings out of buffer with the problematic characters:

const fs = require('fs');
function getChar(charId) {
    let characters = { AA:165, //Ą
         EE:202, //Ę
         CC:198, //Ć
         LL:163, //Ł
         SS:140, //Ś
         OO:211, //Ó
         ZZ:175, //Ż
         ZZZ:143, //Ź
         aa:185, //ą
         ee:234, //ę
         cc:230, //ć
         ll:179, //ł
         ss:156, //ś
         oo:243, //ó
         zz:191, //ź
         zzz:159 //ź
    };
    let buf = new Buffer({
        type:'Buffer',
        data:[ characters[charId] ],
        encoding:'ISO-8859-2'
    });
    return buf.toString('binary')
}
fs.writeFileSync('output.txt',getChar('LL')+" test",'ascii'); //'Ł test'

score -1 · Answer 2 · edited May 23 '17 at 10:29

-1

It's most likely this is a utf-8 encoded file, rather than an "ansi" one. That 'Ł' character is not representable on the ansi encoding. Check with the file command on unix-es what sort of encoding it has and proceed from there.

edited May 23 '17 at 10:29

Community

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answered Jan 26 '17 at 08:15

Horia Coman

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As it stands, this is a *comment* (a useful one), not an answer. – T.J. Crowder Jan 26 '17 at 08:47
@T.J.Crowder true, but there's not that much to go on in the question. Hoping they would update the question so I can expand on the answer. – Horia Coman Jan 26 '17 at 09:21
I updated the question after checking the file with `file` command. – johnerfx Jan 26 '17 at 12:36

Read from file and write to file 'Ł' character with nodejs

2 Answers2