1 files changed, 282 insertions, 0 deletions
diff --git a/node_modules/config-chain/index.js b/node_modules/config-chain/index.js
new file mode 100644
index 0000000..0ef3a91
--- /dev/null
+++ b/node_modules/config-chain/index.js
@@ -0,0 +1,282 @@
+var ProtoList = require('proto-list')
+  , path = require('path')
+  , fs = require('fs')
+  , ini = require('ini')
+  , EE = require('events').EventEmitter
+  , url = require('url')
+  , http = require('http')
+
+var exports = module.exports = function () {
+  var args = [].slice.call(arguments)
+    , conf = new ConfigChain()
+
+  while(args.length) {
+    var a = args.shift()
+    if(a) conf.push
+          ( 'string' === typeof a
+            ? json(a)
+            : a )
+  }
+
+  return conf
+}
+
+//recursively find a file...
+
+var find = exports.find = function () {
+  var rel = path.join.apply(null, [].slice.call(arguments))
+
+  function find(start, rel) {
+    var file = path.join(start, rel)
+    try {
+      fs.statSync(file)
+      return file
+    } catch (err) {
+      if(path.dirname(start) !== start) // root
+        return find(path.dirname(start), rel)
+    }
+  }
+  return find(__dirname, rel)
+}
+
+var parse = exports.parse = function (content, file, type) {
+  content = '' + content
+  // if we don't know what it is, try json and fall back to ini
+  // if we know what it is, then it must be that.
+  if (!type) {
+    try { return JSON.parse(content) }
+    catch (er) { return ini.parse(content) }
+  } else if (type === 'json') {
+    if (this.emit) {
+      try { return JSON.parse(content) }
+      catch (er) { this.emit('error', er) }
+    } else {
+      return JSON.parse(content)
+    }
+  } else {
+    return ini.parse(content)
+  }
+}
+
+var json = exports.json = function () {
+  var args = [].slice.call(arguments).filter(function (arg) { return arg != null })
+  var file = path.join.apply(null, args)
+  var content
+  try {
+    content = fs.readFileSync(file,'utf-8')
+  } catch (err) {
+    return
+  }
+  return parse(content, file, 'json')
+}
+
+var env = exports.env = function (prefix, env) {
+  env = env || process.env
+  var obj = {}
+  var l = prefix.length
+  for(var k in env) {
+    if(k.indexOf(prefix) === 0)
+      obj[k.substring(l)] = env[k]
+  }
+
+  return obj
+}
+
+exports.ConfigChain = ConfigChain
+function ConfigChain () {
+  EE.apply(this)
+  ProtoList.apply(this, arguments)
+  this._awaiting = 0
+  this._saving = 0
+  this.sources = {}
+}
+
+// multi-inheritance-ish
+var extras = {
+  constructor: { value: ConfigChain }
+}
+Object.keys(EE.prototype).forEach(function (k) {
+  extras[k] = Object.getOwnPropertyDescriptor(EE.prototype, k)
+})
+ConfigChain.prototype = Object.create(ProtoList.prototype, extras)
+
+ConfigChain.prototype.del = function (key, where) {
+  // if not specified where, then delete from the whole chain, scorched
+  // earth style
+  if (where) {
+    var target = this.sources[where]
+    target = target && target.data
+    if (!target) {
+      return this.emit('error', new Error('not found '+where))
+    }
+    delete target[key]
+  } else {
+    for (var i = 0, l = this.list.length; i < l; i ++) {
+      delete this.list[i][key]
+    }
+  }
+  return this
+}
+
+ConfigChain.prototype.set = function (key, value, where) {
+  var target
+
+  if (where) {
+    target = this.sources[where]
+    target = target && target.data
+    if (!target) {
+      return this.emit('error', new Error('not found '+where))
+    }
+  } else {
+    target = this.list[0]
+    if (!target) {
+      return this.emit('error', new Error('cannot set, no confs!'))
+    }
+  }
+  target[key] = value
+  return this
+}
+
+ConfigChain.prototype.get = function (key, where) {
+  if (where) {
+    where = this.sources[where]
+    if (where) where = where.data
+    if (where && Object.hasOwnProperty.call(where, key)) return where[key]
+    return undefined
+  }
+  return this.list[0][key]
+}
+
+ConfigChain.prototype.save = function (where, type, cb) {
+  if (typeof type === 'function') cb = type, type = null
+  var target = this.sources[where]
+  if (!target || !(target.path || target.source) || !target.data) {
+    // TODO: maybe save() to a url target could be a PUT or something?
+    // would be easy to swap out with a reddis type thing, too
+    return this.emit('error', new Error('bad save target: '+where))
+  }
+
+  if (target.source) {
+    var pref = target.prefix || ''
+    Object.keys(target.data).forEach(function (k) {
+      target.source[pref + k] = target.data[k]
+    })
+    return this
+  }
+
+  var type = type || target.type
+  var data = target.data
+  if (target.type === 'json') {
+    data = JSON.stringify(data)
+  } else {
+    data = ini.stringify(data)
+  }
+
+  this._saving ++
+  fs.writeFile(target.path, data, 'utf8', function (er) {
+    this._saving --
+    if (er) {
+      if (cb) return cb(er)
+      else return this.emit('error', er)
+    }
+    if (this._saving === 0) {
+      if (cb) cb()
+      this.emit('save')
+    }
+  }.bind(this))
+  return this
+}
+
+ConfigChain.prototype.addFile = function (file, type, name) {
+  name = name || file
+  var marker = {__source__:name}
+  this.sources[name] = { path: file, type: type }
+  this.push(marker)
+  this._await()
+  fs.readFile(file, 'utf8', function (er, data) {
+    if (er) this.emit('error', er)
+    this.addString(data, file, type, marker)
+  }.bind(this))
+  return this
+}
+
+ConfigChain.prototype.addEnv = function (prefix, env, name) {
+  name = name || 'env'
+  var data = exports.env(prefix, env)
+  this.sources[name] = { data: data, source: env, prefix: prefix }
+  return this.add(data, name)
+}
+
+ConfigChain.prototype.addUrl = function (req, type, name) {
+  this._await()
+  var href = url.format(req)
+  name = name || href
+  var marker = {__source__:name}
+  this.sources[name] = { href: href, type: type }
+  this.push(marker)
+  http.request(req, function (res) {
+    var c = []
+    var ct = res.headers['content-type']
+    if (!type) {
+      type = ct.indexOf('json') !== -1 ? 'json'
+           : ct.indexOf('ini') !== -1 ? 'ini'
+           : href.match(/\.json$/) ? 'json'
+           : href.match(/\.ini$/) ? 'ini'
+           : null
+      marker.type = type
+    }
+
+    res.on('data', c.push.bind(c))
+    .on('end', function () {
+      this.addString(Buffer.concat(c), href, type, marker)
+    }.bind(this))
+    .on('error', this.emit.bind(this, 'error'))
+
+  }.bind(this))
+  .on('error', this.emit.bind(this, 'error'))
+  .end()
+
+  return this
+}
+
+ConfigChain.prototype.addString = function (data, file, type, marker) {
+  data = this.parse(data, file, type)
+  this.add(data, marker)
+  return this
+}
+
+ConfigChain.prototype.add = function (data, marker) {
+  if (marker && typeof marker === 'object') {
+    var i = this.list.indexOf(marker)
+    if (i === -1) {
+      return this.emit('error', new Error('bad marker'))
+    }
+    this.splice(i, 1, data)
+    marker = marker.__source__
+    this.sources[marker] = this.sources[marker] || {}
+    this.sources[marker].data = data
+    // we were waiting for this.  maybe emit 'load'
+    this._resolve()
+  } else {
+    if (typeof marker === 'string') {
+      this.sources[marker] = this.sources[marker] || {}
+      this.sources[marker].data = data
+    }
+    // trigger the load event if nothing was already going to do so.
+    this._await()
+    this.push(data)
+    process.nextTick(this._resolve.bind(this))
+  }
+  return this
+}
+
+ConfigChain.prototype.parse = exports.parse
+
+ConfigChain.prototype._await = function () {
+  this._awaiting++
+}
+
+ConfigChain.prototype._resolve = function () {
+  this._awaiting--
+  if (this._awaiting === 0) this.emit('load', this)
+}