Programming

If you get it, you get it.

@Imnecomrade@lemmygrad.ml shared an mp3 here https://lemmygrad.ml/post/7362221/6119140 that id3 tags that didn't decode properly on my machine. I decided to ask DeepSeek to write a script to fix that, and it just worked on the first try. Around a 100 lines of code.

here it is:

npm install iconv-lite node-id3

const iconv = require('iconv-lite');
const NodeID3 = require('node-id3');
const fs = require('fs').promises;

async function decodeMP3Tags(filePath) {
    try {
        // Read both ID3v2 and ID3v1.1 tags
        const tags = {
            v2: NodeID3.read(filePath),
            v1: await readID3v1(filePath)
        };

        // Merge tags with priority to ID3v2
        const mergedTags = {
            title: tags.v2.title || tags.v1?.title,
            artist: tags.v2.artist || tags.v1?.artist,
            album: tags.v2.album || tags.v1?.album,
            year: tags.v2.year || tags.v1?.year,
            comment: tags.v2.comment?.text || tags.v1?.comment,
            trackNumber: tags.v2.trackNumber || tags.v1?.track
        };

        // Decode all fields
        const decodedTags = {};
        for (const [field, value] of Object.entries(mergedTags)) {
            if (value) decodedTags[field] = decodeCyrillic(value);
        }

        // Write back as ID3v2.4 tags with UTF-8 encoding
        NodeID3.update(decodedTags, filePath);

        // Remove ID3v1.1 tags if present
        await removeID3v1(filePath);

        console.log('Successfully updated tags:', decodedTags);
    } catch (error) {
        console.error('Error processing file:', error);
    }
}

// ID3v1.1 Reader (128 bytes at end of file)
async function readID3v1(filePath) {
    try {
        const buffer = Buffer.alloc(128);
        const handle = await fs.open(filePath, 'r');
        const stats = await handle.stat();

        if (stats.size < 128) return null;
        await handle.read(buffer, 0, 128, stats.size - 128);
        await handle.close();

        if (buffer.toString('ascii', 0, 3) !== 'TAG') return null;

        return {
            title: buffer.toString('binary', 3, 33),
            artist: buffer.toString('binary', 33, 63),
            album: buffer.toString('binary', 63, 93),
            year: buffer.toString('binary', 93, 97),
            comment: buffer.toString('binary', 97, 127),
            track: buffer[125]
        };
    } catch (e) {
        return null;
    }
}

// ID3v1.1 Remover
async function removeID3v1(filePath) {
    try {
        const handle = await fs.open(filePath, 'r+');
        const stats = await handle.stat();

        if (stats.size < 128) return;
        const endBuffer = Buffer.alloc(128);
        await handle.read(endBuffer, 0, 128, stats.size - 128);

        if (endBuffer.toString('ascii', 0, 3) === 'TAG') {
            await handle.truncate(stats.size - 128);
        }
        await handle.close();
    } catch (e) {
        console.error('Error removing ID3v1:', e);
    }
}

// Cyrillic decoding (same as previous)
function decodeCyrillic(text) {
    const bytes = Buffer.from(text, 'latin1');
    const encodings = ['windows-1251', 'koi8-r', 'iso-8859-5', 'cp866'];
    let best = { decoded: text, count: 0 };

    for (const encoding of encodings) {
        try {
            const decoded = iconv.decode(bytes, encoding);
            const count = [...decoded].filter(c => {
                const cp = c.codePointAt(0);
                return (cp >= 0x0400 && cp <= 0x04FF) || (cp >= 0x0500 && cp <= 0x052F);
            }).length;

            if (count > best.count) best = { decoded, count };
        } catch (e) {}
    }
    return best.decoded;
}

// Usage
const filePath = process.argv[2];
if (!filePath) {
    console.log('Usage: node decode-mp3.js path/to/file.mp3');
    process.exit(1);
}

decodeMP3Tags(filePath);

a quick rundown https://www.youtube.com/watch?v=-qjE8JkIVoQ

A good observation how burn out is directly related to worker alienation

Looking for tips, tricks, and experiences of comrades who've developed Android apps using Vim, Neovim, or other text editors rather than Android Studio.

It's been a while since I did any Android development but I want to develop an app for personal use. Between then and now I've been using Neovim for everything so I'm loathe to go back to Android Studio but it handles a lot of boiler plate for new projects.

Has anyone got any thoughts or tools to share? I'm very comfortable in the CLI so my dream setup would be using Neovim as a code editor and running build commands etc in a terminal nearby.

I'm really amazed at what people are able to do with the extending the Doom engine.