dotfiles/zsh/colorscheme.zsh

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#!/usr/bin/env bash
# partially based on https://github.com/chriskempson/base16-shell/blob/master/templates/default.mustache
source "$ZSH_DOTFILES/../colorschemes/out/shell.zsh"
if [[ -n "$TMUX" ]]; then
# tmux
terminal_wrapper=tmux
elif [[ -n "$STY" ]]; then
# GNU Screen
terminal_wrapper=screen
fi
if [[ -z "$terminal_wrapper" ]]; then
case "$TERM" in
linux*) terminal="linux" ;;
*) terminal="xterm" ;;
esac
export _COLORSCHEME_TERMINAL="$terminal"
else
terminal="${_COLORSCHEME_TERMINAL:-xterm}"
fi
# when a terminal wrapper is detected certain control sequences are used to
# send color change control sequences directly to the terminal
case "$terminal_wrapper" in
tmux)
# http://permalink.gmane.org/gmane.comp.terminal-emulators.tmux.user/1324
_colorscheme_print_ctrl_seq() { print -n "\ePtmux;\e$1\e\\"; }
;;
screen)
# GNU screen uses the standard DCS (Device Control String) sequence (see
# console_codes(4) manpage)
_colorscheme_print_ctrl_seq() { print -n "\eP$1\e\\"; }
;;
*)
_colorscheme_print_ctrl_seq() { print -n "$1"; }
;;
esac; unset terminal_wrapper
case "$terminal" in
linux)
_colorscheme_print_osc_seq() {}
_colorscheme_set_attr_to_color() {}
_colorscheme_set_ansi_color() {
# Linux console supports setting only 16 ANSI colors and interestingly
# enough uses only 8 of them
if (( $1 >= 0 && $1 < 16 )); then
_colorscheme_print_ctrl_seq "$(printf "\e]P%X%s" "$1" "$2")"
fi
}
;;
xterm)
_colorscheme_print_osc_seq() {
_colorscheme_print_ctrl_seq "\e]$1\a";
}
_colorscheme_set_attr_to_color() {
_colorscheme_print_osc_seq "$1;rgb:${2[1,2]}/${2[3,4]}/${2[5,6]}";
}
_colorscheme_set_ansi_color() {
_colorscheme_set_attr_to_color "4;$1" "$2";
}
;;
esac; unset terminal
set-my-colorscheme() {
local i; for (( i = 1; i <= ${#colorscheme_ansi_colors}; i++ )); do
_colorscheme_set_ansi_color "$((i-1))" "${colorscheme_ansi_colors[$i]}"
done
if [[ -n "$ITERM_SESSION_ID" ]]; then
# iTerm2 proprietary escape codes
# https://www.iterm2.com/documentation-escape-codes.html
_colorscheme_print_osc_seq Pg"$colorscheme_fg"
_colorscheme_print_osc_seq Ph"$colorscheme_bg"
_colorscheme_print_osc_seq Pi"$colorscheme_fg" # bold
_colorscheme_print_osc_seq Pj"$colorscheme_selection_bg"
_colorscheme_print_osc_seq Pk"$colorscheme_selection_fg"
_colorscheme_print_osc_seq Pl"$colorscheme_cursor_bg"
_colorscheme_print_osc_seq Pm"$colorscheme_cursor_fg"
else
_colorscheme_set_attr_to_color 10 "$colorscheme_fg"
_colorscheme_set_attr_to_color 11 "$colorscheme_bg"
if [[ "$TERM" = rxvt* ]]; then
# internal window border
_colorscheme_set_attr_to_color 708 "$colorscheme_bg"
fi
fi
}
set-my-colorscheme