util = require 'util' repl = require 'repl' fs = require 'fs' colors = require 'colors' path = require 'path' vm = require 'vm' cs = require 'coffee-script' cs_eval = require './repl-cs' Event = require '../utils/event' module.exports = class REPL extends Event mode: 'cs' multiline: null initialized: false constructor:-> console.log '➜ ' + 'initializing..'.grey @mode = 'cs' @multiline = enabled: false, buffer: '', lines: 0 {@stdout, @stdin} = process start:-> msg = [' Run'.grey, '.help'.white.bold, 'to see options'.grey].join ' ' console.log msg useColors = true terminal = true prompt = do @format_prompt @repl = repl.start {prompt, @eval, useColors, terminal} do @refresh_promt do @configure_repl do @configure_multiline do @wrap_repl_interactions do @wrap_rli_interactions @initialized = true configure_repl:-> standard_cmds = '.break .clear .exit .help .save .load'.split ' ' max_length = 0 polyfills = ' ' @repl.commands['.help'] = help: 'Show repl options', action: => @help standard_cmds, max_length, polyfills @repl.commands['.set_mode'] = help: 'Switches eval mode between javascript and coffeescript [js|cs]' action: @set_mode @repl.commands['.g'] = help: 'Generates models, views and controllers:'.white + """\n\t\t.g model \t\t.g view / \t\t.g controller \t\t.g mvc \t\t#{' * models,views=singular, controllers=plural'.cyan} """.grey action: @generate @repl.commands['.d'] = help: 'Destroys models, views and controllers:'.white + """\n\t\t.d model \t\t.d view / \t\t.d controller \t\t.d mvc \t\t.d mvc --rf (delete the whole view folder) \t\t#{' * models,views=singular, controllers=plural'.cyan} """.grey action: @destroy for name, cmd of @repl.commands max_length = Math.max max_length, name.length polyfills = (Array max_length).join ' ' # method completely borrowed from CoffeeScript REPL and adapted here configure_multiline:-> # Handle Ctrl-v @repl.inputStream.on 'keypress', (char, key) => return unless key and key.ctrl and not key.meta and not key.shift and key.name is 'v' if @multiline # allow arbitrarily switching between modes any time before # multiple lines are entered unless @multiline.buffer.match /\n/ @multiline.enabled = not @multiline.enabled @multiline.lines = 0 return do @refresh_promt # no-op unless the current line is empty return if @repl.rli.line? and not @repl.rli.line.match /^\s*$/ # eval, print, loop @multiline.enabled = not @multiline.enabled @repl.rli.line = '' @repl.rli.cursor = 0 @repl.rli.output.cursorTo 0 @repl.rli.output.clearLine 1 # multiline hack if @mode is 'cs' @multiline.buffer = @multiline.buffer.replace /\n/g, '\uFF00' else if @mode is 'js' @multiline.buffer = @multiline.buffer.replace /\n/g, '' @repl.rli.emit 'line', @multiline.buffer @multiline.buffer = '' @multiline.lines = 0 else @multiline.enabled = not @multiline.enabled do @refresh_promt # REPL & RLI wrappers wrap_repl_interactions:-> @repl.on 'exit', => do process.exit wrap_rli_interactions:-> quit = 0 on_line = (@repl.rli.listeners 'line')[0] @repl.rli.removeListener 'line', on_line @repl.rli.on 'line', (cmd) => if not @multiline.enabled return on_line cmd @multiline.buffer += "#{cmd}\n" @multiline.lines++ quit = 0 do @refresh_promt on_sigint = (@repl.rli.listeners 'SIGINT')[0] @repl.rli.removeListener 'SIGINT', on_sigint @repl.rli.on 'SIGINT', => return do @repl.rli.close if ++quit is 2 console.log '\r\n(^C again to quit)' do @refresh_promt # repl custom eval eval:(input, context, filename, callback)=> # decides which mode to run on switch @mode when 'cs' cs_eval.apply null, arguments when 'js' try # first try will wrap expressin in parens callback null, (vm.runInContext input, context, filename) catch e # rising this error will re-execute the function if the error # is a syntax error callback e do @refresh_promt # REPL commands help:( standard_cmds, max_length, polyfills )-> @log '» '.bold.magenta + 'default'.bold.magenta for name, cmd of @repl.commands when name in standard_cmds framed = (polyfills + name).slice -max_length @log "#{framed} #{cmd.help}" @log '\n ' + '» '.bold.magenta + 'theoricus'.bold.magenta for name, cmd of @repl.commands when name not in standard_cmds framed = (polyfills + name).slice -max_length @log "#{framed} #{cmd.help}" @log '\n ' + '» Note:'.bold.magenta + 'theoricus'.bold.magenta @log '\tCTRL + V toogle between single line vs multiline modes'.grey set_mode:( mode )=> @mode = mode do @refresh_promt @log 'Mode switched to:'.grey, mode.green generate:( input )=> [type, name] = input.trim().split ' ' if not type return @error 'Type not informed (model, view, controller, mvc) »'.red, '.g [type] [name]'.white if not name return @error 'Name not informed »'.red, '.g [type] [name]'.white @emit 'generate', type, name destroy:( input )=> [type, name, rf] = input.trim().split ' ' if not type or (/^--/.test type) return @error 'Type not informed (model, view, controller, mvc) »'.red, '.d [type] [name] [--rf]'.white if not name or (/^--/.test name) return @error 'Name not informed »'.red, '.d [type] [name] [--rf]'.white @emit 'destroy', type, name, rf is '--rf' # prompt manipulations format_prompt:-> start = '➜ '.red if @multiline.enabled the = 'the' the += ((Array(6).join '.') + @multiline.lines).slice -6 the = the.bold.grey else the = 'theoricus'.bold.grey mode = "(#{@mode})".cyan return "#{start} #{the}:#{mode} " refresh_promt:-> prompt = do @format_prompt @repl.rli.setPrompt prompt, prompt.stripColors.length @repl.rli.prompt true clear_prompt:-> chars = (do @format_prompt).length + 1 @stdout.write "\x1B[#{chars}D" @stdout.write Array(chars).join ' ' @stdout.write "\x1B[#{chars}D" show_prompt:-> @stdout.write do @format_prompt # console.log / console.error middlewares log:( msg... )-> do @clear_prompt if @initialized console.log.apply null, [' '].concat msg do @show_prompt if @initialized error:( msg... )-> do @clear_prompt if @initialized console.error.apply null, [' '].concat msg do @show_prompt if @initialized