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usr
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lib
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node_modules
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npm
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node_modules
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promzard
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files >> //proc/self/root/usr/lib/node_modules/npm/node_modules/promzard/promzard.js
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) }
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