X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=terminal.coffee;h=913d87485b3c3da388b29df276b5bff0a479f16c;hb=4260b6a221b4d36c1611171e658243b03d597dc9;hp=360fb1ad57c8ce3d8ab9771f57b5b93603836e60;hpb=1700d1f6d76490cd696f9072bf28d595a4e484c5;p=watch-my-terminal.git diff --git a/terminal.coffee b/terminal.coffee index 360fb1a..913d874 100644 --- a/terminal.coffee +++ b/terminal.coffee @@ -1,5 +1,11 @@ -async = require 'async' -fs = require 'fs' +# this file is used by the client and server. + +# work around lack of module system in the browser: +if exports? + my_exports = exports +else + window.terminal = {} + my_exports = window.terminal class Terminal # public: @@ -10,10 +16,11 @@ class Terminal @attributes = [] @x = 0 @y = 0 - @a = 0 # cursor attributes + @a = 0x000007 # cursor attributes @partial = '' + @saved_normal_screen = null @resize width, height - + resize: (width, height) -> # FIXME: write a version that retains some of the data @width = width @@ -44,12 +51,7 @@ class Terminal else @update_sequence_then_text parts[i] return - - clear_rest_of_line: -> - for i in [@x...@width] - @text[@y][i] = ' ' - @attributes[@y][i] = @a - + add_new_line: -> # clear top line for i in [0...@width] @@ -62,7 +64,7 @@ class Terminal @attributes.push(tmp) # slide cursor up with rest of text @y -= 1 - + wrap_to_next_line: -> if @y is @height - 1 @add_new_line() @@ -81,81 +83,266 @@ class Terminal when '\x0d' # cr @x = 0 when '\x08' # backspace - if @x > 0 + if @x is 0 + @x = @width - 1 + if @y > 0 + @y -= 1 + else @x -= 1 - @text[@y][@x] = ' ' - # should this set the attribute too? when '\x0a', '\x0b' # lf, vertical tab (same thing) @wrap_to_next_line() else + if @x >= @width + @wrap_to_next_line() @text[@y][@x] = c @attributes[@y][@x] = @a @x += 1 - if @x is @width - @wrap_to_next_line() return - + set_attribute_bits: (mask, value) -> @a = (@a & ~mask) | value - csi_m: default: "0", go: -> + # we're supposed to ignore leeding zeros, and while we're at it, lets swap + # in the default for blank or missing values + fix_esc_arg: (value, deef_alt) -> + if value? and value != '' + while value[0] is '0' and value.length > 1 + value = value.substr 1 + return value + else + return deef_alt + + # set cursor position (one based) + csi_H: (row, column) -> + row = 0 + @fix_esc_arg row, 1 + column = 0 + @fix_esc_arg column, 1 + + # convert to 0 base + column -= 1 + + #clamp values + if column < 0 + column = 0 + else if column >= @width + column = @width - 1 + if row < 0 + row = 0 + if row >= @height + row = @height - 1 + + #move the cursor + @x = column + @y = row + + # clear to screen edge(es) + csi_J: (direction) -> + switch @fix_esc_arg direction, '0' + when '0' # erase down + # rest of current line + @csi_K direction + # rest of lines + for row in [@y...@height] + for i in [0...@width] + @text[row][i] = ' ' + @attributes[row][i] = @a + when '1' # erase up + # beginning of current line + @csi_K direction + # all previous lines + for row in [0..@y] + for i in [0...@width] + @text[row][i] = ' ' + @attributes[row][i] = @a + when '2' # erase everything + for row in [0...@height] + for i in [0...@width] + @text[row][i] = ' ' + @attributes[row][i] = @a + else + console.log "confusing arg for csi_J: #{direction}" + + # clear (some or all of) current line + csi_K: (direction) -> + switch @fix_esc_arg direction, '0' + when '0' # erase to right + for i in [@x...@width] + @text[@y][i] = ' ' + @attributes[@y][i] = @a + when '1' # erase to left + # @x can equal @width (after printing to right-most column) + if @x < @width + max = @x + else + max = @width - 1 + for i in [0..max] + @text[@y][i] = ' ' + @attributes[@y][i] = @a + when '2' # erase whole line + for i in [0...@width] + @text[@y][i] = ' ' + @attributes[@y][i] = @a + else + console.log "confusing arg for csi_K: #{direction}" + + # misc + csiq_h: -> + args = [] + for i in arguments + switch @fix_esc_arg i, '' + when '1049' + if @saved_normal_screen? + console.log "ignoring request to switch to the alt screen because we're already on the alt screen" + return + @saved_normal_screen = [@x, @y, @text, @attributes] + @text = [] + @attributes = [] + for y in [0...@height] + @text[y] = [] + @attributes[y] = [] + for x in [0...@width] + @text[y].push ' ' + @attributes[y].push 0 + # unmisc + csiq_l: -> + args = [] for i in arguments - switch i + switch @fix_esc_arg i, '' + when '1049' + if not @saved_normal_screen? + console.log "ignoring request to switch to the normal screen because we're already on the normal screen" + return + @x = @saved_normal_screen[0] + @y = @saved_normal_screen[1] + @text = @saved_normal_screen[2] + @attributes = @saved_normal_screen[3] + @saved_normal_screen = null + + # set color, bold, underline, etc + csi_m: -> + args = [] + for i in arguments + args.push @fix_esc_arg i, 0 + + while args.length > 0 + switch args.shift() + + # remove all style/color when '0' - @set_attribute_bits 0xffffff, 0 + @set_attribute_bits 0xffffff, 0x000007 + + # style attributes when '1' # bold - @set_attribute_bits 0x100, 1 + @set_attribute_bits 0x10000, 0x10000 when '4' # underline - @set_attribute_bits 0x200, 1 + @set_attribute_bits 0x20000, 0x20000 when '5' # blink - @set_attribute_bits 0x400, 1 + @set_attribute_bits 0x40000, 0x40000 when '8' # invisible - @set_attribute_bits 0x800, 1 - + @set_attribute_bits 0x80000, 0x80000 + + # disable style attributes when '22' # not bold... according to a page - @set_attribute_bits 0x100, 0 + @set_attribute_bits 0x10000, 0 when '21' # ... though this would make more sense for "not bold" - @set_attribute_bits 0x100, 0 + @set_attribute_bits 0x10000, 0 when '24' # not underline - @set_attribute_bits 0x200, 0 + @set_attribute_bits 0x20000, 0 when '25' # not blink - @set_attribute_bits 0x400, 0 + @set_attribute_bits 0x40000, 0 when '28' # not invisible - @set_attribute_bits 0x800, 0 + @set_attribute_bits 0x80000, 0 + + when '100' # reset colors but not other attributes + @set_attribute_bits 0xffff, 0x0007 + # 8 fg colors when '30' # fg black - @set_attribute_bits 0xff, 0 + @set_attribute_bits 0xff, 0x00 when '31' # fg red - @set_attribute_bits 0xff, 0xe0 + @set_attribute_bits 0xff, 0x01 when '32' # fg green - @set_attribute_bits 0xff, 0x1c + @set_attribute_bits 0xff, 0x02 when '33' # fg yellow - @set_attribute_bits 0xff, 0xfc + @set_attribute_bits 0xff, 0x03 when '34' # fg blue - @set_attribute_bits 0xff, 0x02 + @set_attribute_bits 0xff, 0x04 when '35' # fg magenta - @set_attribute_bits 0xff, 0xe2 + @set_attribute_bits 0xff, 0x05 when '36' # fg cyan - @set_attribute_bits 0xff, 0x1f + @set_attribute_bits 0xff, 0x06 when '37', '39' # fg white (39 is default) - @set_attribute_bits 0xff, 0xff + @set_attribute_bits 0xff, 0x07 + + when '38' + if args.length >= 2 and args[0] is '5' + args.shift() + @set_attribute_bits 0xff, (0xff & args.shift()) + else + @set_attribute_bits 0x20000, 0x20000 + # 8 bg colors when '40' # bg black - @set_attribute_bits 0xff00, 0 + @set_attribute_bits 0xff00, 0x0000 when '41' # bg red - @set_attribute_bits 0xff00, 0xe000 + @set_attribute_bits 0xff00, 0x0100 when '42' # bg green - @set_attribute_bits 0xff00, 0x1c00 + @set_attribute_bits 0xff00, 0x0200 when '43' # bg yellow - @set_attribute_bits 0xff00, 0xfc00 + @set_attribute_bits 0xff00, 0x0300 when '44' # bg blue - @set_attribute_bits 0xff00, 0x0200 + @set_attribute_bits 0xff00, 0x0400 when '45' # bg magenta - @set_attribute_bits 0xff00, 0xe200 + @set_attribute_bits 0xff00, 0x0500 when '46' # bg cyan - @set_attribute_bits 0xff00, 0x1f00 - when '47', '49' # bg white (49 is default) - @set_attribute_bits 0xff00, 0xff + @set_attribute_bits 0xff00, 0x0600 + when '47' # bg white + @set_attribute_bits 0xff00, 0x0700 + when '49' # bg default + @set_attribute_bits 0xff00, 0x0000 + + when '48' + if args.length >= 2 and args[0] is '5' + args.shift() + @set_attribute_bits 0xff00, ((0xff & args.shift()) << 8) + else + @set_attribute_bits 0x20000, 0x20000 + + # bright fg colors + when '90' # fg bright black + @set_attribute_bits 0xff, 0x08 + when '91' # fg bright red + @set_attribute_bits 0xff, 0x09 + when '92' # fg bright green + @set_attribute_bits 0xff, 0x0a + when '93' # fg bright yellow + @set_attribute_bits 0xff, 0x0b + when '94' # fg bright blue + @set_attribute_bits 0xff, 0x0c + when '95' # fg bright magenta + @set_attribute_bits 0xff, 0x0d + when '96' # fg bright cyan + @set_attribute_bits 0xff, 0x0e + when '97' # fg bright white + @set_attribute_bits 0xff, 0x0f + + # bright bg colors + when '100' # bg bright black + @set_attribute_bits 0xff, 0x08 + when '101' # bg bright red + @set_attribute_bits 0xff, 0x09 + when '102' # bg bright green + @set_attribute_bits 0xff, 0x0a + when '103' # bg bright yellow + @set_attribute_bits 0xff, 0x0b + when '104' # bg bright blue + @set_attribute_bits 0xff, 0x0c + when '105' # bg bright magenta + @set_attribute_bits 0xff, 0x0d + when '106' # bg bright cyan + @set_attribute_bits 0xff, 0x0e + when '107' # bg bright white + @set_attribute_bits 0xff, 0x0f + else # if we don't recognize the style, go back to default @@ -164,13 +351,16 @@ class Terminal # str is the whole escape sequence (minus the esc[ prefix) update_sequence: (str) -> - command = @["csi_#{str.substr str.length - 1}"] - return unless command? + prefix = 'csi_' + if str[0] is '?' + prefix = 'csiq_' + str = str.substr 1 + command = @[prefix + str.substr(str.length - 1)] + if not command? + console.log "Unrecognized sequence: ESC[#{str}" + return args = str.substr(0, str.length - 1).split ';' - for i in [0...args.length] - if args[i] is '' - args[i] = command.default - command.go.call this, args... + command.call this, args... update_sequence_then_text: (str) -> len = @escape_sequence_length str @@ -186,5 +376,5 @@ class Terminal return -1 unless parts? return parts[0].length -exports.new = (width, height) -> +my_exports.new = (width, height) -> return new Terminal width, height