/*
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
Author Tobias Koppers @sokra
|
*/
|
"use strict";
|
|
const forEachBail = require("./forEachBail");
|
|
function loadDescriptionFile(
|
resolver,
|
directory,
|
filenames,
|
resolveContext,
|
callback
|
) {
|
(function findDescriptionFile() {
|
forEachBail(
|
filenames,
|
(filename, callback) => {
|
const descriptionFilePath = resolver.join(directory, filename);
|
if (resolver.fileSystem.readJson) {
|
resolver.fileSystem.readJson(descriptionFilePath, (err, content) => {
|
if (err) {
|
if (typeof err.code !== "undefined") return callback();
|
return onJson(err);
|
}
|
onJson(null, content);
|
});
|
} else {
|
resolver.fileSystem.readFile(descriptionFilePath, (err, content) => {
|
if (err) return callback();
|
let json;
|
try {
|
json = JSON.parse(content);
|
} catch (e) {
|
onJson(e);
|
}
|
onJson(null, json);
|
});
|
}
|
|
function onJson(err, content) {
|
if (err) {
|
if (resolveContext.log)
|
resolveContext.log(
|
descriptionFilePath + " (directory description file): " + err
|
);
|
else
|
err.message =
|
descriptionFilePath + " (directory description file): " + err;
|
return callback(err);
|
}
|
callback(null, {
|
content: content,
|
directory: directory,
|
path: descriptionFilePath
|
});
|
}
|
},
|
(err, result) => {
|
if (err) return callback(err);
|
if (result) {
|
return callback(null, result);
|
} else {
|
directory = cdUp(directory);
|
if (!directory) {
|
return callback();
|
} else {
|
return findDescriptionFile();
|
}
|
}
|
}
|
);
|
})();
|
}
|
|
function getField(content, field) {
|
if (!content) return undefined;
|
if (Array.isArray(field)) {
|
let current = content;
|
for (let j = 0; j < field.length; j++) {
|
if (current === null || typeof current !== "object") {
|
current = null;
|
break;
|
}
|
current = current[field[j]];
|
}
|
if (typeof current === "object") {
|
return current;
|
}
|
} else {
|
if (typeof content[field] === "object") {
|
return content[field];
|
}
|
}
|
}
|
|
function cdUp(directory) {
|
if (directory === "/") return null;
|
const i = directory.lastIndexOf("/"),
|
j = directory.lastIndexOf("\\");
|
const p = i < 0 ? j : j < 0 ? i : i < j ? j : i;
|
if (p < 0) return null;
|
return directory.substr(0, p || 1);
|
}
|
|
exports.loadDescriptionFile = loadDescriptionFile;
|
exports.getField = getField;
|
exports.cdUp = cdUp;
|
