Files
transmission/libtransmission/mime-types.js
Yat Ho 0fd35eb070 fix: remove duplicated mime types and prefer iana source (#7590)
* fix: remove duplicated mime types and prefer iana source

* refactor: use raw string literals just to be safe

* code review: prefer specific types over octet stream
2025-05-10 08:59:22 +01:00

85 lines
2.8 KiB
JavaScript
Executable File

#!/usr/bin/env node
import fs from 'node:fs';
const copyright =
`// This file was generated with libtransmission/mime-types.js
// DO NOT EDIT MANUALLY
// This file Copyright © Mnemosyne LLC.
// 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.`;
// 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';
async function main() {
const response = await fetch(url);
const mime_types = await response.json()
const extensions = Object.entries(mime_types)
.reduce((acc, [mime_type, info]) => {
const { extensions, ...rest } = info;
for (const extension of extensions || [])
acc.push({ mime_type, extension, info: rest });
return acc;
}, [])
.sort((lhs, rhs) => {
// Sort by extension
const extension_order = lhs.extension.localeCompare(rhs.extension);
if (extension_order !== 0)
return extension_order;
// Prefer entries that has a trusted source
const lhs_has_source = lhs.info?.source ? 0 : 1;
const rhs_has_source = rhs.info?.source ? 0 : 1;
const has_source = lhs_has_source - rhs_has_source;
if (has_source !== 0)
return has_source;
// Prefer a specific type over the generic octet stream
const lhs_is_octet = lhs.mime_type === 'application/octet-stream' ? 1 : 0;
const rhs_is_octet = rhs.mime_type === 'application/octet-stream' ? 1 : 0;
const is_octet = lhs_is_octet - rhs_is_octet;
if (is_octet !== 0)
return is_octet;
// Prefer iana source
const lhs_is_iana = lhs.info?.source === 'iana' ? 0 : 1;
const rhs_is_iana = rhs.info?.source === 'iana' ? 0 : 1;
return lhs_is_iana - rhs_is_iana;
})
.filter(({ extension }, pos, arr) => pos === 0 || extension !== arr[pos - 1].extension);
const mime_type_lines = extensions
.map(({ extension, mime_type }) => ` { R"(${extension})", R"(${mime_type})" }`)
.join(',\n')
.trim();
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;
};
inline auto constexpr MimeTypeSuffixes = std::array<mime_type_suffix, ${extensions.length}>{
{ ${mime_type_lines} }
};
`);
}
main().catch(console.error);