AlkantarClanX12
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module.exports = promzard
promzard.PromZard = PromZard
var fs = require('fs')
var vm = require('vm')
var util = require('util')
var files = {}
var crypto = require('crypto')
var EventEmitter = require('events').EventEmitter
var read = require('read')
var Module = require('module').Module
var path = require('path')
function promzard (file, ctx, cb) {
if (typeof ctx === 'function') cb = ctx, ctx = null;
if (!ctx) ctx = {};
var pz = new PromZard(file, ctx)
pz.on('error', cb)
pz.on('data', function (data) {
cb(null, data)
})
}
promzard.fromBuffer = function (buf, ctx, cb) {
var filename = 0
do {
filename = '\0' + Math.random();
} while (files[filename])
files[filename] = buf
var ret = promzard(filename, ctx, cb)
delete files[filename]
return ret
}
function PromZard (file, ctx) {
if (!(this instanceof PromZard))
return new PromZard(file, ctx)
EventEmitter.call(this)
this.file = file
this.ctx = ctx
this.unique = crypto.randomBytes(8).toString('hex')
this.load()
}
PromZard.prototype = Object.create(
EventEmitter.prototype,
{ constructor: {
value: PromZard,
readable: true,
configurable: true,
writable: true,
enumerable: false } } )
PromZard.prototype.load = function () {
if (files[this.file])
return this.loaded()
fs.readFile(this.file, 'utf8', function (er, d) {
if (er && this.backupFile) {
this.file = this.backupFile
delete this.backupFile
return this.load()
}
if (er)
return this.emit('error', this.error = er)
files[this.file] = d
this.loaded()
}.bind(this))
}
PromZard.prototype.loaded = function () {
this.ctx.prompt = this.makePrompt()
this.ctx.__filename = this.file
this.ctx.__dirname = path.dirname(this.file)
this.ctx.__basename = path.basename(this.file)
var mod = this.ctx.module = this.makeModule()
this.ctx.require = function (path) {
return mod.require(path)
}
this.ctx.require.resolve = function(path) {
return Module._resolveFilename(path, mod);
}
this.ctx.exports = mod.exports
this.script = this.wrap(files[this.file])
var fn = vm.runInThisContext(this.script, this.file)
var args = Object.keys(this.ctx).map(function (k) {
return this.ctx[k]
}.bind(this))
try { var res = fn.apply(this.ctx, args) }
catch (er) { this.emit('error', er) }
if (res &&
typeof res === 'object' &&
exports === mod.exports &&
Object.keys(exports).length === 1) {
this.result = res
} else {
this.result = mod.exports
}
this.walk()
}
PromZard.prototype.makeModule = function () {
var mod = new Module(this.file, module)
mod.loaded = true
mod.filename = this.file
mod.id = this.file
mod.paths = Module._nodeModulePaths(path.dirname(this.file))
return mod
}
PromZard.prototype.wrap = function (body) {
var s = '(function( %s ) { %s\n })'
var args = Object.keys(this.ctx).join(', ')
return util.format(s, args, body)
}
PromZard.prototype.makePrompt = function () {
this.prompts = []
return prompt.bind(this)
function prompt () {
var p, d, t
for (var i = 0; i < arguments.length; i++) {
var a = arguments[i]
if (typeof a === 'string' && p)
d = a
else if (typeof a === 'string')
p = a
else if (typeof a === 'function')
t = a
else if (a && typeof a === 'object') {
p = a.prompt || p
d = a.default || d
t = a.transform || t
}
}
try { return this.unique + '-' + this.prompts.length }
finally { this.prompts.push([p, d, t]) }
}
}
PromZard.prototype.walk = function (o, cb) {
o = o || this.result
cb = cb || function (er, res) {
if (er)
return this.emit('error', this.error = er)
this.result = res
return this.emit('data', res)
}
cb = cb.bind(this)
var keys = Object.keys(o)
var i = 0
var len = keys.length
L.call(this)
function L () {
if (this.error)
return
while (i < len) {
var k = keys[i]
var v = o[k]
i++
if (v && typeof v === 'object') {
return this.walk(v, function (er, res) {
if (er) return cb(er)
o[k] = res
L.call(this)
}.bind(this))
} else if (v &&
typeof v === 'string' &&
v.indexOf(this.unique) === 0) {
var n = +v.substr(this.unique.length + 1)
var prompt = this.prompts[n]
if (isNaN(n) || !prompt)
continue
// default to the key
if (undefined === prompt[0])
prompt[0] = k
// default to the ctx value, if there is one
if (undefined === prompt[1])
prompt[1] = this.ctx[k]
return this.prompt(prompt, function (er, res) {
if (er) {
if (!er.notValid) {
return this.emit('error', this.error = er);
}
console.log(er.message)
i --
return L.call(this)
}
o[k] = res
L.call(this)
}.bind(this))
} else if (typeof v === 'function') {
try { return v.call(this.ctx, function (er, res) {
if (er)
return this.emit('error', this.error = er)
o[k] = res
// back up so that we process this one again.
// this is because it might return a prompt() call in the cb.
i --
L.call(this)
}.bind(this)) }
catch (er) { this.emit('error', er) }
}
}
// made it to the end of the loop, maybe
if (i >= len)
return cb(null, o)
}
}
PromZard.prototype.prompt = function (pdt, cb) {
var prompt = pdt[0]
var def = pdt[1]
var tx = pdt[2]
if (tx) {
cb = function (cb) { return function (er, data) {
try {
var res = tx(data)
if (!er && res instanceof Error && !!res.notValid) {
return cb(res, null)
}
return cb(er, res)
}
catch (er) { this.emit('error', er) }
}}(cb).bind(this)
}
read({ prompt: prompt + ':' , default: def }, cb)
}