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#!/bin/bash
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# vim: set ft=sh :
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#
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# Logging output
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# Output message to stderr.
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function log_msg {
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echo "$*" >&2
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}
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# Output message to stderr, optionally with given color, if TTY.
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function log_color {
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local code=$1; shift
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if [ $IS_TTY ]; then
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echo $'\e['${code}'m'"$*"$'\e[00m' >&2
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else
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echo "$*" >&2
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fi
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}
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## Log at various log-levels
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# plain
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function log {
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[ $LOG ] && log_msg "$*" || true
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}
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function log_error {
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[ $LOG_ERROR ] && log_color '31' "$*" || true
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}
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function log_warn {
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[ $LOG_WARN ] && log_color '33' "$*" || true
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}
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function log_force {
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[ $LOG_FORCE ] && log_color '2;33' " $*" || true
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}
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function log_update {
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[ $LOG_UPDATE ] && log_color '36' " $*" || true
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}
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function log_noop {
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[ $LOG_NOOP ] && log_color '2;34' " $*" || true
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}
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function log_skip {
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[ $LOG_SKIP ] && log_color '1;34' " $*" || true
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}
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function log_debug {
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[ $LOG_DEBUG ] && log_color '32' " $*" || true
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}
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function log_cmd {
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[ $LOG_CMD ] && log_color '35' " \$ $*" || true
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}
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# Output stacktrace, broken.
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function log_stack {
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local level=1
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while info=$(caller $level); do
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echo $info | read line sub file
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log_msg "$file:$lineno $sub()"
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level=$(($level + 1))
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done
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}
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# Output calling function's name.
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function func_caller {
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caller 1 | cut -d ' ' -f 2
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}
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### High-level logging output
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# Log with func_caller at log_debug
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function debug {
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printf -v prefix "%s" $(func_caller)
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log_debug "$prefix: $*"
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}
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# Log with func_caller at log_error and exit, intended for internal errors...
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function fail {
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log_error "$(func_caller): $*"
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exit 2
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}
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# Log at log_error and exit
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function die {
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log_error "$*"
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exit 1
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}
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