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livepatch/klp-build: add terminal color output

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Improve the readability of klp-build output by implementing a basic
color scheme.  When the standard output and error are connected to a
terminal, highlight status messages in bold and warning/error prefixes
in yellow/red.

Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Link: https://patch.msgid.link/20260310203751.1479229-12-joe.lawrence@redhat.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Joe Lawrence 2026-03-10 16:37:50 -04:00 committed by Josh Poimboeuf
parent b41d8b7d17
commit 1fbc9b855f
1 changed files with 13 additions and 4 deletions
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17
scripts/livepatch/klp-build
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@ -52,6 +52,15 @@ PATCH_TMP_DIR="$TMP_DIR/tmp"
KLP_DIFF_LOG="$DIFF_DIR/diff.log"
# Terminal output colors
read -r COLOR_RESET COLOR_BOLD COLOR_ERROR COLOR_WARN <<< ""
if [[ -t 1 && -t 2 ]]; then
COLOR_RESET="\033[0m"
COLOR_BOLD="\033[1m"
COLOR_ERROR="\033[0;31m"
COLOR_WARN="\033[0;33m"
fi
grep0() {
# shellcheck disable=SC2317
command grep "$@" || true
@ -65,15 +74,15 @@ grep() {
}
status() {
echo "$*"
echo -e "${COLOR_BOLD}$*${COLOR_RESET}"
}
warn() {
echo "error: $SCRIPT: $*" >&2
echo -e "${COLOR_WARN}warning${COLOR_RESET}: $SCRIPT: $*" >&2
}
die() {
warn "$@"
echo -e "${COLOR_ERROR}error${COLOR_RESET}: $SCRIPT: $*" >&2
exit 1
}
@ -110,7 +119,7 @@ cleanup() {
}
trap_err() {
warn "line ${BASH_LINENO[0]}: '$BASH_COMMAND'"
die "line ${BASH_LINENO[0]}: '$BASH_COMMAND'"
}
trap cleanup EXIT INT TERM HUP