+# SETTINGS
+term_columns = 97
+term_lines = 63
+http_port = 2218
+
+if process.argv.length > 2
+ term_columns = parseInt process.argv[2]
+if process.argv.length > 3
+ term_lines = parseInt process.argv[3]
+
+
handler = (req, res) ->
reply_err = (req, res, msg) ->
res.writeHead(200, 'Content-Type': 'text/plain')
when '/terminal.js'
filename = __dirname + '/terminal.coffee'
type = 'text/javascript'
+ when '/htmlterm.js'
+ filename = __dirname + '/htmlterm.coffee'
+ type = 'text/javascript'
when '/client.js'
filename = __dirname + '/client.coffee'
type = 'text/javascript'
fs = require('fs')
terminal = require('./terminal.coffee')
-# SETTINGS
-app.listen(9293)
-term = terminal.new(104, 66)
+app.listen(http_port)
+term = terminal.new(term_columns, term_lines)
sockets = []
sockets.splice i, 1
return
- socket.emit 'init', width: term.width, height: term.height, x: term.x, y: term.y, a: term.a, text: term.text, attributes: term.attributes, cursor_visible: term.cursor_visible
+
+ enc_color = (prefix, c) ->
+ if c < 8
+ return "#{prefix}#{c}"
+ if c < 16
+ return "#{prefix + 6}#{c - 8}"
+ return "#{prefix}8;5;#{c}"
+
+ attr_diff = (a, b) ->
+ xo = a ^ b
+ parts = []
+ if (xo & 0xff)
+ parts.push enc_color 3, (b & 0xff)
+ if (xo & 0xff00)
+ parts.push enc_color 4, ((b & 0xff00) >> 8)
+ for [bit, code] in [[0x010000, '1'], [0x200000, '3'], [0x020000, '4'], [0x040000, '5'], [0x080000, '7'], [0x100000, '8']]
+ if (xo & bit)
+ if (b & bit)
+ parts.push code
+ else
+ parts.push '2' + code
+ if parts.length
+ return "\x1b[#{parts.join ';'}m"
+ else
+ return ''
+ encode_screen = (height, width, text, attributes) ->
+ state = ''
+ for y in [0...height]
+ max = width - 1
+ while max >= 0 and text[y][max] is ' ' and (attributes[y][max] & 0x08ff00) is 0
+ max -= 1
+ if max >= 0
+ for x in [0..max]
+ if attributes[y][x] isnt a
+ state += attr_diff a, attributes[y][x]
+ a = attributes[y][x]
+ state += text[y][x]
+ if y < height - 1
+ state += '\n'
+ return state
+
+ a = 0x07
+ state = ''
+ if term.saved_normal_screen?
+ state += encode_screen term.height, term.width, term.saved_normal_screen.text, term.saved_normal_screen.attributes
+ state += "\x1b[#{term.saved_normal_screen.y + 1};#{term.saved_normal_screen.x + 1}H"
+ state += "\x1b[?1049h\x1b[H" # flip to alt screen and move cursor home
+ state += encode_screen term.height, term.width, term.text, term.attributes
+ state += attr_diff a, term.a
+ state += "\x1b[#{term.y + 1};#{term.x + 1}H"
+ unless term.cursor_visible
+ state += "\x1b[?25l"
+ unless term.scroll_top is 0 and term.scroll_bottom is term.height - 1
+ state += "\x1b[#{term.scroll_top};#{term.scroll_bottom}r"
+ socket.emit 'init', width: term.width, height: term.height, text: state
process.stdin.resume()
process.stdin.setEncoding 'utf8'