Alexander
25 lines
1.1 KiB
Bash
25 lines
1.1 KiB
Bash
# shellcheck shell=bash
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# Colorful, TTY-aware logging helpers: log_info / log_warn / log_error.
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#
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# Everything is written to *stderr*, so a script's stdout stays a clean data
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# channel (e.g. wallpaper-pick prints the chosen image path on stdout while
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# its progress goes to stderr). Set SCRIPT_TAG to prefix every line with the
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# originating script, e.g. "[theme-switch] selecting wallpaper...".
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#
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# Colors are auto-disabled when stderr isn't a terminal or NO_COLOR is set.
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__theme_log_init() {
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if [ -t 2 ] && [ -z "${NO_COLOR:-}" ]; then
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__C_RESET=$'\033[0m'
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__C_INFO=$'\033[1;34m' # blue
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__C_WARN=$'\033[1;33m' # yellow
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__C_ERR=$'\033[1;31m' # red
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else
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__C_RESET=""; __C_INFO=""; __C_WARN=""; __C_ERR=""
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fi
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}
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__theme_log_init
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log_info() { printf '%s%s%s%s\n' "${__C_INFO}" "${SCRIPT_TAG:+[$SCRIPT_TAG] }" "$*" "${__C_RESET}" >&2; }
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log_warn() { printf '%s%s%s%s\n' "${__C_WARN}" "${SCRIPT_TAG:+[$SCRIPT_TAG] }" "warning: $*" "${__C_RESET}" >&2; }
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log_error() { printf '%s%s%s%s\n' "${__C_ERR}" "${SCRIPT_TAG:+[$SCRIPT_TAG] }" "error: $*" "${__C_RESET}" >&2; }
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