transmission/libtransmission/mime-types.js

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#!/usr/bin/env node
const copyright =
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`// This file Copyright © 2021-${new Date().getFullYear()} Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.`;
const fs = require('fs');
const https = require('https');
// https://github.com/jshttp/mime-db
// > If you're crazy enough to use this in the browser, you can just grab
// > the JSON file using jsDelivr. It is recommended to replace master with
// > a release tag as the JSON format may change in the future.
//
// This script keeps it at `master` to pick up any fixes that may have landed.
// If the format changes, we'll just update this script.
const url = 'https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json';
https.get(url, (res) => {
res.setEncoding('utf8');
const chunks = [];
res.on('data', (chunk) => chunks.push(chunk));
res.on('end', () => {
try {
const suffixes = [];
const mime_types = JSON.parse(chunks.join(''));
for (const [mime_type, info] of Object.entries(mime_types)) {
for (const suffix of info?.extensions || []) {
suffixes.push([ suffix, mime_type ]);
}
}
const mime_type_lines = suffixes
.map(([suffix, mime_type]) => ` { "${suffix}", "${mime_type}" }`)
.sort()
.join(',\n');
fs.writeFileSync('mime-types.h', `${copyright}
#pragma once
#include <array>
#include <string_view>
struct mime_type_suffix
{
std::string_view suffix;
std::string_view mime_type;
};
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inline auto constexpr mime_type_suffixes = std::array<mime_type_suffix, ${suffixes.length}>{
{ ${mime_type_lines.trim()} }
};
`);
} catch (e) {
console.error(e.message);
}
});
});