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refactor mime-types

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This commit is contained in:
David Reed 2022-11-23 14:33:18 -05:00
parent 38a715b3a2
commit 782aa2672e
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GPG key ID: 2211691D8A1EE72F
2 changed files with 33 additions and 64 deletions
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2
src/rewrite/index.js
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@ -3,7 +3,7 @@ import CSS from './css.js';
import JS from './js.js';
import setCookie from 'set-cookie-parser';
import { xor, base64, plain } from './codecs.js';
import mimeTypes from 'mime-types';
import * as mimeTypes from './mime.js';
import {
validateCookie,
db,

95
src/rewrite/mime.js
View file

@ -1,51 +1,13 @@
/*!
* mime-types
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict';
/**
* Module dependencies.
* @private
*/
var $exports = {};
import db from 'mime-db';
var extname = function (path = '') {
if (!path.includes('.')) return '';
const map = path.split('.');
return '.' + map[map.length - 1];
};
/**
* Module variables.
* @private
*/
var EXTRACT_TYPE_REGEXP = /^\s*([^;\s]*)(?:;|\s|$)/;
var TEXT_TYPE_REGEXP = /^text\//i;
/**
* Module exports.
* @public
*/
$exports.charset = charset;
$exports.charsets = { lookup: charset };
$exports.contentType = contentType;
$exports.extension = extension;
$exports.extensions = Object.create(null);
$exports.lookup = lookup;
$exports.types = Object.create(null);
const EXTRACT_TYPE_REGEXP = /^\s*([^;\s]*)(?:;|\s|$)/;
const TEXT_TYPE_REGEXP = /^text\//i;
const extensions = Object.create(null);
const types = Object.create(null);
const charsets = { lookup: charset };
// Populate the extensions/types maps
populateMaps($exports.extensions, $exports.types);
populateMaps(extensions, types);
/**
* Get the default charset for a MIME type.
@ -60,8 +22,8 @@ function charset(type) {
}
// TODO: use media-typer
var match = EXTRACT_TYPE_REGEXP.exec(type);
var mime = match && db[match[1].toLowerCase()];
const match = EXTRACT_TYPE_REGEXP.exec(type);
const mime = match && db[match[1].toLowerCase()];
if (mime && mime.charset) {
return mime.charset;
@ -88,7 +50,7 @@ function contentType(str) {
return false;
}
var mime = str.indexOf('/') === -1 ? $exports.lookup(str) : str;
let mime = str.indexOf('/') === -1 ? lookup(str) : str;
if (!mime) {
return false;
@ -96,7 +58,7 @@ function contentType(str) {
// TODO: use content-type or other module
if (mime.indexOf('charset') === -1) {
var charset = $exports.charset(mime);
const charset = charset(mime);
if (charset) mime += '; charset=' + charset.toLowerCase();
}
@ -116,10 +78,10 @@ function extension(type) {
}
// TODO: use media-typer
var match = EXTRACT_TYPE_REGEXP.exec(type);
const match = EXTRACT_TYPE_REGEXP.exec(type);
// get extensions
var exts = match && $exports.extensions[match[1].toLowerCase()];
const exts = match && extensions[match[1].toLowerCase()];
if (!exts || !exts.length) {
return false;
@ -141,15 +103,15 @@ function lookup(path) {
}
// get the extension ("ext" or ".ext" or full path)
var extension = extname('x.' + path)
const extension = extname('x.' + path)
.toLowerCase()
.substr(1);
.slice(1);
if (!extension) {
return false;
}
return $exports.types[extension] || false;
return types[extension] || false;
}
/**
@ -159,11 +121,11 @@ function lookup(path) {
function populateMaps(extensions, types) {
// source preference (least -> most)
var preference = ['nginx', 'apache', undefined, 'iana'];
const preference = ['nginx', 'apache', undefined, 'iana'];
Object.keys(db).forEach(function forEachMimeType(type) {
var mime = db[type];
var exts = mime.extensions;
for (const type in db) {
const mime = db[type];
const exts = mime.extensions;
if (!exts || !exts.length) {
return;
@ -173,12 +135,12 @@ function populateMaps(extensions, types) {
extensions[type] = exts;
// extension -> mime
for (var i = 0; i < exts.length; i++) {
var extension = exts[i];
for (let i = 0; i < exts.length; i++) {
const extension = exts[i];
if (types[extension]) {
var from = preference.indexOf(db[types[extension]].source);
var to = preference.indexOf(mime.source);
const from = preference.indexOf(db[types[extension]].source);
const to = preference.indexOf(mime.source);
if (
types[extension] !== 'application/octet-stream' &&
@ -194,7 +156,14 @@ function populateMaps(extensions, types) {
// set the extension -> mime
types[extension] = type;
}
});
}
}
export default $exports;
function extname(path = '') {
if (!path.includes('.')) return '';
const map = path.split('.');
return '.' + map[map.length - 1];
}
export { charset, charsets, contentType, extension, lookup };