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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
"use strict";
const md5 = require("resource://devtools/client/shared/vendor/md5.js");
function originalToGeneratedId(sourceId) {
if (isGeneratedId(sourceId)) {
return sourceId;
}
const lastIndex = sourceId.lastIndexOf("/originalSource");
return lastIndex !== -1 ? sourceId.slice(0, lastIndex) : "";
}
const getMd5 = memoize(url => md5(url));
function generatedToOriginalId(generatedId, url) {
return `${generatedId}/originalSource-${getMd5(url)}`;
}
function isOriginalId(id) {
return id.includes("/originalSource");
}
function isGeneratedId(id) {
return !isOriginalId(id);
}
/**
* Trims the query part or reference identifier of a URL string, if necessary.
*/
function trimUrlQuery(url) {
const length = url.length;
for (let i = 0; i < length; ++i) {
if (url[i] === "?" || url[i] === "&" || url[i] === "#") {
return url.slice(0, i);
}
}
return url;
}
// Map suffix to content type.
const contentMap = {
js: "text/javascript",
jsm: "text/javascript",
mjs: "text/javascript",
ts: "text/typescript",
tsx: "text/typescript-jsx",
jsx: "text/jsx",
vue: "text/vue",
coffee: "text/coffeescript",
elm: "text/elm",
cljc: "text/x-clojure",
cljs: "text/x-clojurescript",
};
/**
* Returns the content type for the specified URL. If no specific
* content type can be determined, "text/plain" is returned.
*
* @return String
* The content type.
*/
function getContentType(url) {
url = trimUrlQuery(url);
const dot = url.lastIndexOf(".");
if (dot >= 0) {
const name = url.substring(dot + 1);
if (name in contentMap) {
return contentMap[name];
}
}
return "text/plain";
}
function memoize(func) {
const map = new Map();
return arg => {
if (map.has(arg)) {
return map.get(arg);
}
const result = func(arg);
map.set(arg, result);
return result;
};
}
module.exports = {
originalToGeneratedId,
generatedToOriginalId,
isOriginalId,
isGeneratedId,
getContentType,
contentMapForTesting: contentMap,
};
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