var _ = require('lodash'),
nodeutil = require('util'),
fs = require('fs'),
safeStringify = require('json-stringify-safe');
_.str = require('underscore.string');var _ = require('lodash'),
nodeutil = require('util'),
fs = require('fs'),
safeStringify = require('json-stringify-safe');
_.str = require('underscore.string');Extend util with underscore/lodash and underscore.string methods
_.extend(exports, _);Merge in util submodules
var CLIUtil = require('./cli');
_.extend(exports, CLIUtil);Extend with node util methods
_.extend(exports, nodeutil);
/**
* Accept things like `FooController` or `FoO`, then transform
* and lower-case them to things like `foo`
*
* @api private
*/
exports.normalizeControllerId = function normalizeControllerId (controllerId) {
if (!_.isString(controllerId)) {
return null;
}
controllerId = controllerId.replace(/(.+)Controller$/i, '$1');
controllerId = controllerId.toLowerCase();
return controllerId;
};
/**
* Accept things like `FooAdapter` or `FoO`, then transform
* and lower-case them to things like `foo`
*
* Works for adapters, controllers, and services
*
* @api private
*/
exports.normalizeId = function normalizeId (id) {
if (!_.isString(id)) {
return null;
}
id = id.replace(/(.+)(Controller|Adapter|Service)$/i, '$1');
id = id.toLowerCase();
return id;
};
/**
* isValidECMA51Variable
*
* @param {String} v
*
* @api private
*/
exports.isValidECMA51Variable = function(v) {
return 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};
/**
* defaultsDeep
*
* Implement a deep version of `_.defaults`.
*
* @api private
*/
exports.defaultsDeep = _.partialRight(_.merge, _.defaults);
/**
* Normalize an error or array of errors into an array of proper, readable Errors
*
* @param {String|Object|Error|Array} errOrErrs
* @returns {Array[Error]}
*
* @api private
*/
exports.normalizeErrors = function normalizeErrors(errOrErrs) {If errOrErrs is not an array already, make it one
var errorsToDisplay = _.isArray(errOrErrs) ? errOrErrs : [errOrErrs];Ensure that each error is formatted correctly
return _.map(errorsToDisplay, function (e, i) {
var displayError;Make error easier to read, and normalize its type
if (e instanceof Error) {
displayError = e;
}Create an error ad hoc (but save reference to original)
else {
displayError = new Error( nodeutil.inspect(e) );
displayError.original = e;
}
return displayError;
});
};
/**
* Detect HTTP verb in an expression like:
* `get baz` or `get /foo/baz`
*
* @api private
*/
exports.detectVerb = function (haystack) {
var verbExpr = /^(get|post|put|delete|trace|options|connect|patch|head)\s+/i;
var verbSpecified = _.last(haystack.match(verbExpr) || []) || '';
verbSpecified = verbSpecified.toLowerCase();If a verb was specified, eliminate the verb from the original string
if (verbSpecified) {
haystack = haystack.replace(verbExpr,'');
}
return {
verb: verbSpecified,
original: haystack,
path: haystack
};
};
/**
* pluralize
*
* Run a method meant for a single object on a single instance OR array.
* For a list, run the method on each item return the resulting array.
* For anything else, return it silently.
*
* @api private
*/
exports.pluralize = function pluralize(collection, application) {
if(_.isArray(collection)) {
return _.map(collection, application);
}
return application(collection);
};
/**
* Detect if a string is "safe" to eval()
*
* @api private
*/
exports.safeToEval = function(someString) {
try {
!(/[^,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/.test(someString.replace(/"(\\.|[^"\\])*"/g, ''))) && eval('(' + someString + ')');
} catch(e) {
return false;
}
return true;
};
/**
* Return whether the specified item is an object, but NOT an array or function
*
* TODO: replace usages of this method with `instanceof`
* and `_.isPlainObject()`
*
* @api private
*
* @api private
*/
exports.isDictionary = function isDictionary(thing) {
return _.isObject(thing) && !_.isArray(thing) && !_.isFunction(thing);
};
/**
* optional
*
* Wrap a callback function to make it optional
*
* @api private
*/
exports.optional = function wrapOptionalCallback (cb) {
if ( _.isFunction(cb) ) return cb;
return function _noOp (){};return function optionalCallback () { if (!cb) return; var args = Array.prototype.slice.call(arguments); return cb.apply(this, args); };
};
/**
* Get the domain out of the origin header--
* compare it to the host
*
* @api private
*/
exports.isSameOrigin = function isSameOrigin(req) {Get the domain out of the origin header
var matches = req.headers.origin.match(/^https?:\/\/([^:]+)(:\d+)?$/);
if (matches === null) {
return false;
}
var domain = matches[1];Compare it to the host
return (req.host == domain);
};
/**
* Return whether the given object is an instance of Error
*
* @api private
*/
exports.isError = function (e) {
return e instanceof Error;
};
/**
* Extract the file extension suffix from a filename or path
*
* @api private
*/
exports.fileExtension = function(str) {
if(str === null) return '';
var pieces = String(str).split('.');
return pieces.length > 1 ? _.last(pieces) : '';
};
/**
* Return the abbreviated ordinal string for a given integer
*
* http://en.wikipedia.org/wiki/Ordinal_number_(linguistics)
* i.e. prettier rendering of things like: 1st, 2nd, 3rd, 4th
*
* @api private
*/
exports.ordinal = function(integer) {
if(_.isFinite(+integer) && Math.floor(+integer) === +integer) {
var lastDigit = +integer % 10;
var lastTwoDigits = +integer % 100;
var response = integer + "";Handle n-teen case
if(lastTwoDigits >= 11 && lastTwoDigits <= 13) {
return response + "th";
}Handle general case
switch(lastDigit) {
case 1:
return response + "st";
case 2:
return response + "nd";
case 3:
return response + "rd";
default:
return response + "th";
}
}
throw new Error("sails.util.ordinal() only works on integers!");
};
/**
* Get the names of a function's arguments
*
* @param {Function} func
* @returns array of argument names, e.g. ['req', 'res']
*
* @api private
*/
exports.getParamNames = function(func) {
var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
var fnStr = func.toString().replace(STRIP_COMMENTS, '');
var result = fnStr.slice(fnStr.indexOf('(') + 1, fnStr.indexOf(')')).match(/([^\s,]+)/g);
if (result === null)
result = [];
return result;
};
/**
* parseJSONFile
*
* Read a json file at the specified path.
* If an error occurs, call cb(err), and dont throw!
*
* @api private
*/
exports.parseJSONFile = function ( path, cb ) {
if (!cb) throw new Error('Callback required!');
if (cb === 'sync') {
var jsonString;
try {
jsonString = fs.readFileSync(path, 'utf-8');
}
catch (e) {
return false;
}
return andThen(jsonString);
}
fs.readFile(path, 'utf-8', function (err, file) {
if (err) return cb(err);
andThen(file);
});Attempt to parse JSON, then return
function andThen( json ) {
var err;
try {
json = JSON.parse(json);
} catch (e) {
err = e;
json = false;
}Parse failed:
if (err) {
if (cb==='sync') return false;
else return cb(err);
}Success:
if ( cb === 'sync' ) return json;
return cb(null, json);
}
};
/**
* getJSONFileSync
*
* Synchronous version of getJSONFile()
* Returns false if json file cannot be read or parsed.
*
* @api private
*/
exports.parseJSONFileSync = function ( path ) {
return exports.parseJSONFile(path, 'sync');
};
/**
* getPackage
*
* Read package.json file in the directory at the specified
* path. If an error occurs, call cb(err), and dont throw!
*
* @api private
*/
exports.getPackage = function (path, cb) {
path = _.str.rtrim(path, '/');
path += '/package.json';
exports.parseJSONFile(path, function (err, json) {
if (err) return cb(err);Success: Ensure dependencies are at least an empty object
json.dependencies = json.dependencies || {};
if ( cb === 'sync' ) return json;
return cb(null, json);
});
};
/**
* getPackageSync
*
* Synchronous version of getPackage()
* Returns false if package.json cannot be read or parsed.
*
* @api private
*/
exports.getPackageSync = function (path) {
path = _.str.rtrim(path, '/');
path += '/package.json';Success: Ensure dependencies are at least an empty object
var json = exports.parseJSONFileSync(path, 'sync');
if (!json) return json;
json.dependencies = json.dependencies || {};
return json;
};
/**
* Get path to the home directory in an OS-agnostic way
*
* @api private
*/
exports.homeDirectory = function () {
return process.env[
(process.platform == 'win32') ?
'USERPROFILE' :
'HOME'
];
};
/**
* tolerantParse
*
* Parse specified JSON, but if it fails,
* return false instead of throwing.
*
* @api private
*/
exports.tolerantParse = function ( json ) {
var args = Array.prototype.slice.call(arguments);
try {
return JSON.parse.apply(this, args);
} catch (e) {
return false;
}
};
/**
* Wrapper for @isaacs' `json-stringify-safe`
*
* Automatically handles circular references.
* See: https://github.com/isaacs/json-stringify-safe
*
* If stringification doesn't work, instead of throwing,
* return false.
*
* @api private
*/
exports.stringify = function ( json, serializer, indent, decycler ) {
var args = Array.prototype.slice.call(arguments);
try {
return safeStringify.apply(this, args);
}
catch (e) {
return false;
}
};Underscore extensions for objects
_.extend(exports,{
/**
* _.objMap
*
* _.map for objects, keeps key/value associations
*
* @api private
*/
objMap: function(input, mapper, context) {
return _.reduce(input, function(obj, v, k) {
obj[k] = mapper.call(context, v, k, input);
return obj;
}, {}, context);
},
/**
* _.objFilter
*
* _.filter for objects, keeps key/value associations
* but only includes the properties that pass test().
*
* @api private
*/
objFilter: function(input, test, context) {
return _.reduce(input, function(obj, v, k) {
if(test.call(context, v, k, input)) {
obj[k] = v;
}
return obj;
}, {}, context);
},
/**
* _.objReject
*
* _.reject for objects, keeps key/value associations
* but does not include the properties that pass test().
*
* @api private
*/
objReject: function(input, test, context) {
return _.reduce(input, function(obj, v, k) {
if(!test.call(context, v, k, input)) {
obj[k] = v;
}
return obj;
}, {}, context);
},
/**
* _.objInvoke
*
* Usage:
* obj -> the object
* arguments* -> other arguments can be specified to be invoked on each of the functions
*
* @api private
*/
objInvoke: function(obj) {
var args = _.toArray(arguments).shift();
return exports.objMap(obj, function(fn) {
return fn(args);
});
}
});