File size: 5,380 Bytes
04ec17f |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 |
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const forEachBail = require("./forEachBail");
/** @typedef {import("./Resolver")} Resolver */
/** @typedef {import("./Resolver").JsonObject} JsonObject */
/** @typedef {import("./Resolver").JsonValue} JsonValue */
/** @typedef {import("./Resolver").ResolveContext} ResolveContext */
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
/**
* @typedef {object} DescriptionFileInfo
* @property {JsonObject=} content content
* @property {string} path path
* @property {string} directory directory
*/
/**
* @callback ErrorFirstCallback
* @param {Error|null=} error
* @param {DescriptionFileInfo=} result
*/
/**
* @typedef {object} Result
* @property {string} path path to description file
* @property {string} directory directory of description file
* @property {JsonObject} content content of description file
*/
/**
* @param {string} directory directory
* @returns {string|null} parent directory or null
*/
function cdUp(directory) {
if (directory === "/") return null;
const i = directory.lastIndexOf("/");
const j = directory.lastIndexOf("\\");
const path = i < 0 ? j : j < 0 ? i : i < j ? j : i;
if (path < 0) return null;
return directory.slice(0, path || 1);
}
/**
* @param {Resolver} resolver resolver
* @param {string} directory directory
* @param {string[]} filenames filenames
* @param {DescriptionFileInfo|undefined} oldInfo oldInfo
* @param {ResolveContext} resolveContext resolveContext
* @param {ErrorFirstCallback} callback callback
*/
function loadDescriptionFile(
resolver,
directory,
filenames,
oldInfo,
resolveContext,
callback,
) {
(function findDescriptionFile() {
if (oldInfo && oldInfo.directory === directory) {
// We already have info for this directory and can reuse it
return callback(null, oldInfo);
}
forEachBail(
filenames,
/**
* @param {string} filename filename
* @param {(err?: null|Error, result?: null|Result) => void} callback callback
* @returns {void}
*/
(filename, callback) => {
const descriptionFilePath = resolver.join(directory, filename);
/**
* @param {(null | Error)=} err error
* @param {JsonObject=} resolvedContent content
* @returns {void}
*/
function onJson(err, resolvedContent) {
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: /** @type {JsonObject} */ (resolvedContent),
directory,
path: descriptionFilePath,
});
}
if (resolver.fileSystem.readJson) {
resolver.fileSystem.readJson(descriptionFilePath, (err, content) => {
if (err) {
if (
typeof (/** @type {NodeJS.ErrnoException} */ (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);
}
/** @type {JsonObject | undefined} */
let json;
if (content) {
try {
json = JSON.parse(content.toString());
} catch (/** @type {unknown} */ err_) {
return onJson(/** @type {Error} */ (err_));
}
} else {
return onJson(new Error("No content in file"));
}
onJson(null, json);
});
}
},
/**
* @param {(null | Error)=} err error
* @param {(null | Result)=} result result
* @returns {void}
*/
(err, result) => {
if (err) return callback(err);
if (result) return callback(null, result);
const dir = cdUp(directory);
if (!dir) {
return callback();
}
directory = dir;
return findDescriptionFile();
},
);
})();
}
/**
* @param {JsonObject} content content
* @param {string|string[]} field field
* @returns {JsonValue | undefined} field data
*/
function getField(content, field) {
if (!content) return undefined;
if (Array.isArray(field)) {
/** @type {JsonValue} */
let current = content;
for (let j = 0; j < field.length; j++) {
if (current === null || typeof current !== "object") {
current = null;
break;
}
current = /** @type {JsonValue} */ (
/** @type {JsonObject} */
(current)[field[j]]
);
}
return current;
}
return content[field];
}
module.exports.cdUp = cdUp;
module.exports.getField = getField;
module.exports.loadDescriptionFile = loadDescriptionFile;
|