8cbc6500df
Specifically, if `tput colors` fails with an error we treat that as if the terminal does not support colors. Fixes #423 Suggested-by: PhotonQuantum <self@lightquantum.me>
86 lines
1.8 KiB
Bash
86 lines
1.8 KiB
Bash
#!/usr/bin/env bash
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#
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# This file contains a number of utilities for use by the home-manager tool and
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# the generated Home Manager activation scripts. No guarantee is made about
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# backwards or forward compatibility.
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#
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# Sets up colors suitable for the `errorEcho`, `warnEcho`, and `noteEcho`
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# functions.
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#
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# The check for terminal output and color support is heavily inspired by
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# https://unix.stackexchange.com/a/10065.
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#
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# The setup respects the `NO_COLOR` environment variable.
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function setupColors() {
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normalColor=""
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errorColor=""
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warnColor=""
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noteColor=""
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# Enable colors for terminals, and allow opting out.
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if [[ ! -v NO_COLOR && -t 1 ]]; then
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# See if it supports colors.
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local ncolors
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ncolors=$(tput colors 2> /dev/null || echo 0)
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if [[ -n "$ncolors" && "$ncolors" -ge 8 ]]; then
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normalColor="$(tput sgr0)"
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errorColor="$(tput bold)$(tput setaf 1)"
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warnColor="$(tput setaf 3)"
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noteColor="$(tput bold)$(tput setaf 6)"
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fi
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fi
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}
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setupColors
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function errorEcho() {
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echo "${errorColor}$*${normalColor}"
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}
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function warnEcho() {
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echo "${warnColor}$*${normalColor}"
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}
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function noteEcho() {
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echo "${noteColor}$*${normalColor}"
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}
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function _i() {
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local msgid="$1"
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shift
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# shellcheck disable=2059
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printf "$(gettext "$msgid")\n" "$@"
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}
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function _ip() {
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local msgid="$1"
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local msgidPlural="$2"
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local count="$3"
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shift 3
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# shellcheck disable=2059
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printf "$(ngettext "$msgid" "$msgidPlural" "$count")\n" "$@"
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}
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function _iError() {
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echo -n "${errorColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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function _iWarn() {
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echo -n "${warnColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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function _iNote() {
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echo -n "${noteColor}"
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_i "$@"
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echo -n "${normalColor}"
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}
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