parse.coffee

   1 async = require 'async'
   2 fs = require 'fs'
   3
   4 class Terminal
   5         # public:
   6         constructor: (width, height) ->
   7                 @width = 1
   8                 @height = 1
   9                 @text = [""]
  10                 @attributes = [0]
  11                 @x = 0
  12                 @y = 0
  13                 @partial = ''
  14                 @resize width, height
  15
  16         resize: (width, height) ->
  17                 # FIXME: write a version that retains some of the data
  18                 @text = []
  19                 @attributes = []
  20                 for i in [0...height]
  21                         @text[i] = ""
  22                         @attributes[i] = new Array(width)
  23
  24         # pass data from stdout
  25         update: (data) ->
  26                 return unless data?.length > 0
  27                 if @partial.length > 0
  28                         data = @partial + data
  29                         @partial = ''
  30                 parts = data.split(/\x1b\[/)
  31                 if parts.length > 1
  32                         if -1 is @escape_sequence_length parts[parts.length - 1]
  33                                 @partial = parts.pop()
  34                 if parts.length > 0
  35                         for i in [0...parts.length]
  36                                 if i is 0
  37                                         @update_text parts[i]
  38                                 else
  39                                         @update_sequence_then_text parts[i]
  40                 return
  41
  42         # str has no escape sequences
  43         update_text: (str) ->
  44                 return unless str.length > 0
  45                 console.log "text: \"#{str}\"" # FIXME
  46
  47         # str is the whole escape sequence (minus the esc[ prefix)
  48         update_sequence: (str) ->
  49                 console.log "sequence: \"#{str}\"" # FIXME
  50
  51         update_sequence_then_text: (str) ->
  52                 len = @escape_sequence_length str
  53                 if len is -1
  54                         console.log "couldn't find escape sequence here: #{str.substr 0, 25}"
  55                         @update_text "ESC[" + str
  56                 else
  57                         @update_sequence str.substr 0, len
  58                         @update_text str.substr len
  59
  60         escape_sequence_length: (str) ->
  61                 parts = str.match(/^[0-9;?]{0,25}./)
  62                 return -1 unless parts?
  63                 return parts[0].length