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64 lines
1.9 KiB
64 lines
1.9 KiB
"use strict";
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var fs = require("fs"),
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ono = require("ono"),
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url = require("../util/url");
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module.exports = {
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/**
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* The order that this resolver will run, in relation to other resolvers.
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*
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* @type {number}
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*/
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order: 100,
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/**
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* Determines whether this resolver can read a given file reference.
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* Resolvers that return true will be tried, in order, until one successfully resolves the file.
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* Resolvers that return false will not be given a chance to resolve the file.
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*
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* @param {object} file - An object containing information about the referenced file
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* @param {string} file.url - The full URL of the referenced file
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* @param {string} file.extension - The lowercased file extension (e.g. ".txt", ".html", etc.)
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* @returns {boolean}
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*/
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canRead: function isFile (file) {
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return url.isFileSystemPath(file.url);
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},
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/**
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* Reads the given file and returns its raw contents as a Buffer.
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*
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* @param {object} file - An object containing information about the referenced file
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* @param {string} file.url - The full URL of the referenced file
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* @param {string} file.extension - The lowercased file extension (e.g. ".txt", ".html", etc.)
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* @returns {Promise<Buffer>}
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*/
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read: function readFile (file) {
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return new Promise(function (resolve, reject) {
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var path;
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try {
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path = url.toFileSystemPath(file.url);
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}
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catch (err) {
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reject(ono.uri(err, "Malformed URI: %s", file.url));
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}
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// console.log('Opening file: %s', path);
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try {
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fs.readFile(path, function (err, data) {
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if (err) {
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reject(ono(err, 'Error opening file "%s"', path));
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}
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else {
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resolve(data);
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}
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});
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}
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catch (err) {
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reject(ono(err, 'Error opening file "%s"', path));
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}
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});
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}
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};
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