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105 lines
2.7 KiB
JavaScript
105 lines
2.7 KiB
JavaScript
'use strict';
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var fs = require('fs')
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var ini = require('ini')
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var path = require('path')
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var stripJsonComments = require('strip-json-comments')
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var parse = exports.parse = function (content) {
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//if it ends in .json or starts with { then it must be json.
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//must be done this way, because ini accepts everything.
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//can't just try and parse it and let it throw if it's not ini.
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//everything is ini. even json with a syntax error.
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if(/^\s*{/.test(content))
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return JSON.parse(stripJsonComments(content))
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return ini.parse(content)
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}
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var file = exports.file = function () {
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var args = [].slice.call(arguments).filter(function (arg) { return arg != null })
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//path.join breaks if it's a not a string, so just skip this.
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for(var i in args)
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if('string' !== typeof args[i])
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return
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var file = path.join.apply(null, args)
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var content
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try {
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return fs.readFileSync(file,'utf-8')
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} catch (err) {
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return
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}
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}
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var json = exports.json = function () {
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var content = file.apply(null, arguments)
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return content ? parse(content) : null
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}
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var env = exports.env = function (prefix, env) {
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env = env || process.env
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var obj = {}
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var l = prefix.length
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for(var k in env) {
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if(k.toLowerCase().indexOf(prefix.toLowerCase()) === 0) {
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var keypath = k.substring(l).split('__')
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// Trim empty strings from keypath array
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var _emptyStringIndex
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while ((_emptyStringIndex=keypath.indexOf('')) > -1) {
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keypath.splice(_emptyStringIndex, 1)
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}
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var cursor = obj
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keypath.forEach(function _buildSubObj(_subkey,i){
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// (check for _subkey first so we ignore empty strings)
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// (check for cursor to avoid assignment to primitive objects)
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if (!_subkey || typeof cursor !== 'object')
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return
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// If this is the last key, just stuff the value in there
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// Assigns actual value from env variable to final key
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// (unless it's just an empty string- in that case use the last valid key)
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if (i === keypath.length-1)
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cursor[_subkey] = env[k]
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// Build sub-object if nothing already exists at the keypath
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if (cursor[_subkey] === undefined)
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cursor[_subkey] = {}
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// Increment cursor used to track the object at the current depth
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cursor = cursor[_subkey]
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})
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}
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}
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return obj
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}
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var find = exports.find = function () {
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var rel = path.join.apply(null, [].slice.call(arguments))
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function find(start, rel) {
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var file = path.join(start, rel)
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try {
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fs.statSync(file)
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return file
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} catch (err) {
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if(path.dirname(start) !== start) // root
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return find(path.dirname(start), rel)
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}
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}
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return find(process.cwd(), rel)
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}
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