111 lines
No EOL
2.6 KiB
JavaScript
111 lines
No EOL
2.6 KiB
JavaScript
/*
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* utils.js: Utility functions for the nconf module.
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*
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* (C) 2011, Charlie Robbins
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*
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*/
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var fs = require('fs'),
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async = require('async'),
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formats = require('./formats'),
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Memory = require('./stores/memory').Memory;
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var common = exports;
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//
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// ### function path (key)
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// #### @key {string} The ':' delimited key to split
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// Returns a fully-qualified path to a nested nconf key.
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//
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common.path = function (key) {
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return key.split(':');
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};
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//
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// ### function key (arguments)
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// Returns a `:` joined string from the `arguments`.
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//
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common.key = function () {
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return Array.prototype.slice.call(arguments).join(':');
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};
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//
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// ### function loadFiles (files, callback)
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// #### @files {Object|Array} List of files (or settings object) to load.
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// #### @callback {function} Continuation to respond to when complete.
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// Loads all the data in the specified `files`.
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//
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common.loadFiles = function (files, callback) {
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if (!files) {
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return callback(null, {});
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}
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var options = Array.isArray(files) ? { files: files } : files;
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//
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// Set the default JSON format if not already
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// specified
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//
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options.format = options.format || formats.json;
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function parseFile (file, next) {
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fs.readFile(file, function (err, data) {
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return !err
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? next(null, options.format.parse(data.toString()))
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: next(err);
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});
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}
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async.map(files, parseFile, function (err, objs) {
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return err ? callback(err) : callback(null, common.merge(objs));
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});
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};
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//
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// ### function loadFilesSync (files)
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// #### @files {Object|Array} List of files (or settings object) to load.
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// Loads all the data in the specified `files` synchronously.
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//
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common.loadFilesSync = function (files) {
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if (!files) {
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return;
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}
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//
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// Set the default JSON format if not already
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// specified
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//
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var options = Array.isArray(files) ? { files: files } : files;
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options.format = options.format || formats.json;
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return common.merge(files.map(function (file) {
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return options.format.parse(fs.readFileSync(file, 'utf8'));
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}));
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};
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//
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// ### function merge (objs)
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// #### @objs {Array} Array of object literals to merge
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// Merges the specified `objs` using a temporary instance
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// of `stores.Memory`.
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//
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common.merge = function (objs) {
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var store = new Memory();
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objs.forEach(function (obj) {
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Object.keys(obj).forEach(function (key) {
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store.merge(key, obj[key]);
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});
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});
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return store.store;
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};
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//
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// ### function capitalize (str)
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// #### @str {string} String to capitalize
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// Capitalizes the specified `str`.
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//
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common.capitalize = function (str) {
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return str && str[0].toUpperCase() + str.slice(1);
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}; |