transmission/libtransmission/mime-types.js

73 lines
2.0 KiB
JavaScript
Executable File

#!/usr/bin/env node
const copyright =
`/*
* This file Copyright (C) ${new Date().getFullYear()} Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*/`;
const fs = require('fs');
const https = require('https');
// https://github.com/jshttp/mime-db
// > If you're crazy enough to use this in the browser, you can just grab
// > the JSON file using jsDelivr. It is recommended to replace master with
// > a release tag as the JSON format may change in the future.
//
// This script keeps it at `master` to pick up any fixes that may have landed.
// If the format changes, we'll just update this script.
const url = 'https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json';
https.get(url, (res) => {
res.setEncoding('utf8');
const chunks = [];
res.on('data', (chunk) => chunks.push(chunk));
res.on('end', () => {
try {
const suffixes = [];
const mime_types = JSON.parse(chunks.join(''));
for (const [mime_type, info] of Object.entries(mime_types)) {
for (const suffix of info?.extensions || []) {
suffixes.push([ suffix, mime_type ]);
}
}
const max_suffix_len = suffixes
.reduce((acc, [suffix]) => Math.max(acc, suffix.length), 0);
const mime_type_lines = suffixes
.map(([suffix, mime_type]) => ` { "${suffix}", "${mime_type}" }`)
.sort()
.join(',\n');
fs.writeFileSync('mime-types.c', `${copyright}
#include "mime-types.h"
struct mime_type_suffix const mime_type_suffixes[MIME_TYPE_SUFFIX_COUNT] =
{
${mime_type_lines}
};
`);
fs.writeFileSync('mime-types.h', `${copyright}
#pragma once
#define MIME_TYPE_SUFFIX_MAXLEN ${max_suffix_len}
#define MIME_TYPE_SUFFIX_COUNT ${suffixes.length}
struct mime_type_suffix
{
char const* suffix;
char const* mime_type;
};
extern struct mime_type_suffix const mime_type_suffixes[MIME_TYPE_SUFFIX_COUNT];
`);
} catch (e) {
console.error(e.message);
}
});
});