Initial commit

node_modules/rc/lib/utils.js

@@ -0,0 +1,104 @@
+'use strict';
+var fs   = require('fs')
+var ini  = require('ini')
+var path = require('path')
+var stripJsonComments = require('strip-json-comments')
+
+var parse = exports.parse = function (content) {
+
+  //if it ends in .json or starts with { then it must be json.
+  //must be done this way, because ini accepts everything.
+  //can't just try and parse it and let it throw if it's not ini.
+  //everything is ini. even json with a syntax error.
+
+  if(/^\s*{/.test(content))
+    return JSON.parse(stripJsonComments(content))
+  return ini.parse(content)
+
+}
+
+var file = exports.file = function () {
+  var args = [].slice.call(arguments).filter(function (arg) { return arg != null })
+
+  //path.join breaks if it's a not a string, so just skip this.
+  for(var i in args)
+    if('string' !== typeof args[i])
+      return
+
+  var file = path.join.apply(null, args)
+  var content
+  try {
+    return fs.readFileSync(file,'utf-8')
+  } catch (err) {
+    return
+  }
+}
+
+var json = exports.json = function () {
+  var content = file.apply(null, arguments)
+  return content ? parse(content) : null
+}
+
+var env = exports.env = function (prefix, env) {
+  env = env || process.env
+  var obj = {}
+  var l = prefix.length
+  for(var k in env) {
+    if(k.toLowerCase().indexOf(prefix.toLowerCase()) === 0) {
+
+      var keypath = k.substring(l).split('__')
+
+      // Trim empty strings from keypath array
+      var _emptyStringIndex
+      while ((_emptyStringIndex=keypath.indexOf('')) > -1) {
+        keypath.splice(_emptyStringIndex, 1)
+      }
+
+      var cursor = obj
+      keypath.forEach(function _buildSubObj(_subkey,i){
+
+        // (check for _subkey first so we ignore empty strings)
+        // (check for cursor to avoid assignment to primitive objects)
+        if (!_subkey || typeof cursor !== 'object')
+          return
+
+        // If this is the last key, just stuff the value in there
+        // Assigns actual value from env variable to final key
+        // (unless it's just an empty string- in that case use the last valid key)
+        if (i === keypath.length-1)
+          cursor[_subkey] = env[k]
+
+
+        // Build sub-object if nothing already exists at the keypath
+        if (cursor[_subkey] === undefined)
+          cursor[_subkey] = {}
+
+        // Increment cursor used to track the object at the current depth
+        cursor = cursor[_subkey]
+
+      })
+
+    }
+
+  }
+
+  return obj
+}
+
+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(process.cwd(), rel)
+}
+
+