#!/usr/bin/env ruby
#
# Converts xrdb(1) color schemes into Chrome Secure Shell preferences format
# and prints the result to STDOUT.  Reads STDIN if no input files are given.
#
# Usage: xrdb2hterm FILE...
# Usage: cat FILE... | xrdb2hterm
# Usage: xrdb2hterm < INPUT
#
#--
# Written in 2014 by Suraj N. Kurapati <https://github.com/sunaku>

# expand preprocessor definitions
input = DATA.read + ARGF.read
defines = Hash[ input.scan /\#define\s+(\w+)\s+(.*)\s*/ ]
while defines.any? {|k,v| input.gsub! k, v } do end

# convert xrdb(1) colors to hterm
xrdb = Hash[ input.scan /(\w+)\s*:\s*(.*)\s*/ ]
puts <<HTERM
term_.prefs_.set("background-color", "#{ xrdb['background'] }");
term_.prefs_.set("foreground-color", "#{ xrdb['foreground'] }");
term_.prefs_.set("cursor-color", "rgba(#{
  xrdb['cursorColor'].scan(/\h{2}/).map {|s| s.to_i 16 }.join(?,)
}, 0.5)"); /* #{ xrdb['cursorColor'] } */
term_.prefs_.set("color-palette-overrides", #{
  (0..15).map {|i| xrdb["color#{i}"] }
});
HTERM

__END__
*color0      : Ansi_0_Color
*color1      : Ansi_1_Color
*color2      : Ansi_2_Color
*color3      : Ansi_3_Color
*color4      : Ansi_4_Color
*color5      : Ansi_5_Color
*color6      : Ansi_6_Color
*color7      : Ansi_7_Color
*color8      : Ansi_8_Color
*color9      : Ansi_9_Color
*color10     : Ansi_10_Color
*color11     : Ansi_11_Color
*color12     : Ansi_12_Color
*color13     : Ansi_13_Color
*color14     : Ansi_14_Color
*color15     : Ansi_15_Color
*colorBD     : Bold_Color
*colorIT     : Italic_Color
*colorUL     : Underline_Color
*foreground  : Foreground_Color
*background  : Background_Color
*cursorColor : Cursor_Color