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- "use strict";
- const forEachBail = require("./forEachBail");
- function loadDescriptionFile(
- resolver,
- directory,
- filenames,
- oldInfo,
- resolveContext,
- callback
- ) {
- (function findDescriptionFile() {
- if (oldInfo && oldInfo.directory === directory) {
-
- return callback(null, oldInfo);
- }
- 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"
- ) {
- if (resolveContext.missingDependencies) {
- resolveContext.missingDependencies.add(descriptionFilePath);
- }
- return callback();
- }
- if (resolveContext.fileDependencies) {
- resolveContext.fileDependencies.add(descriptionFilePath);
- }
- return onJson(err);
- }
- if (resolveContext.fileDependencies) {
- resolveContext.fileDependencies.add(descriptionFilePath);
- }
- onJson(null, content);
- });
- } else {
- resolver.fileSystem.readFile(descriptionFilePath, (err, content) => {
- if (err) {
- if (resolveContext.missingDependencies) {
- resolveContext.missingDependencies.add(descriptionFilePath);
- }
- return callback();
- }
- if (resolveContext.fileDependencies) {
- resolveContext.fileDependencies.add(descriptionFilePath);
- }
-
- let json;
- if (content) {
- try {
- json = JSON.parse(content.toString());
- } catch ( e) {
- return onJson( (e));
- }
- } else {
- return onJson(new Error("No content in file"));
- }
- 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,
- path: descriptionFilePath
- });
- }
- },
-
- (err, result) => {
- if (err) return callback(err);
- if (result) {
- return callback(null, result);
- } else {
- const dir = cdUp(directory);
- if (!dir) {
- return callback();
- } else {
- directory = dir;
- 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]];
- }
- return current;
- } else {
- 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.slice(0, p || 1);
- }
- exports.loadDescriptionFile = loadDescriptionFile;
- exports.getField = getField;
- exports.cdUp = cdUp;
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