diff options
Diffstat (limited to 'app-shells/bash/files/bashrc.d/10-gentoo-color.bash')
| -rw-r--r-- | app-shells/bash/files/bashrc.d/10-gentoo-color.bash | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/app-shells/bash/files/bashrc.d/10-gentoo-color.bash b/app-shells/bash/files/bashrc.d/10-gentoo-color.bash new file mode 100644 index 000000000000..5a6df5690c08 --- /dev/null +++ b/app-shells/bash/files/bashrc.d/10-gentoo-color.bash @@ -0,0 +1,67 @@ +# /etc/bash/bashrc.d/10-gentoo-color.bash + +if [[ ${NO_COLOR} ]]; then + # Respect the user's wish not to use color. See https://no-color.org/. + gentoo_color=0 +elif [[ ${COLORTERM@a} == *x* && ${COLORTERM} == @(24bit|truecolor) ]]; then + # The COLORTERM environment variable can reasonably be trusted here. + # See https://github.com/termstandard/colors for further information. + gentoo_color=1 +elif unset -v COLORTERM; ! gentoo_color=$(tput colors 2>/dev/null); then + # Either ncurses is not installed or no terminfo database could be + # found. Fall back to a whitelist which covers the majority of terminal + # emulators and virtual console implementations known to support color + # and which remain (somewhat) popular. This will rarely happen, so the + # list need not be exhaustive. + case ${TERM} in + *color* |\ + *direct* |\ + [Ekx]term* |\ + alacritty |\ + aterm |\ + dtterm |\ + foot* |\ + jfbterm |\ + linux |\ + mlterm |\ + rxvt* |\ + screen* |\ + tmux* |\ + wsvt25* ) gentoo_color=1 + esac +elif (( gentoo_color == 16777216 )); then + # Truecolor support is available. Advertise it. + export COLORTERM=truecolor +fi + +if (( gentoo_color <= 0 )); then + # Define a prompt without color. + PS1='\u@\h \w \$ ' +elif (( EUID == 0 )); then + # If root, omit the username and print the hostname in red. + PS1='\[\e[01;31m\]\h\[\e[01;34m\] \w \$\[\e[00m\] ' +else + # Otherwise, print the username and hostname in green. + PS1='\[\e[01;32m\]\u@\h\[\e[01;34m\] \w \$\[\e[00m\] ' +fi + +if (( gentoo_color > 0 )); then + # Colorize the output of grep and several coreutils utilities. + for _ in diff dir egrep fgrep grep ls vdir; do + alias "$_=$_ --color=auto" + done + + # Enable colors for ls(1) and some other utilities that respect the + # LS_COLORS variable. Prefer ~/.dir_colors, per bug #64489. + if hash dircolors 2>/dev/null; then + if [[ -f ~/.dir_colors ]]; then + eval "$(dircolors -b -- ~/.dir_colors)" + elif [[ -f /etc/DIR_COLORS ]]; then + eval "$(dircolors -b /etc/DIR_COLORS)" + else + eval "$(dircolors -b)" + fi + fi +fi + +unset -v gentoo_color |