mirror of
https://github.com/jpetazzo/container.training.git
synced 2026-03-03 09:50:26 +00:00
77 lines
1.8 KiB
Bash
77 lines
1.8 KiB
Bash
# Abort if any error happens, and show the command that caused the error.
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_ERR() {
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error "Command $BASH_COMMAND failed (exit status: $?)"
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}
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set -e
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trap _ERR ERR
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die() {
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if [ -n "$1" ]; then
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error "$1"
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fi
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exit 1
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}
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error() {
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>/dev/stderr echo "[$(red ERROR)] $1"
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}
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warning() {
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>/dev/stderr echo "[$(yellow WARNING)] $1"
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}
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info() {
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>/dev/stderr echo "[$(green INFO)] $1"
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}
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# Print a full-width separator.
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# If given an argument, will print it in the middle of that separator.
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# If the argument is longer than the screen width, it will be printed between two separator lines.
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sep() {
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if [ -z "$COLUMNS" ]; then
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COLUMNS=80
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fi
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SEP=$(yes = | tr -d "\n" | head -c $(($COLUMNS - 1)))
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if [ -z "$1" ]; then
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>/dev/stderr echo $SEP
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else
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MSGLEN=$(echo "$1" | wc -c)
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if [ $(($MSGLEN + 4)) -gt $COLUMNS ]; then
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>/dev/stderr echo "$SEP"
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>/dev/stderr echo "$1"
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>/dev/stderr echo "$SEP"
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else
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LEFTLEN=$((($COLUMNS - $MSGLEN - 2) / 2))
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RIGHTLEN=$(($COLUMNS - $MSGLEN - 2 - $LEFTLEN))
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LEFTSEP=$(echo $SEP | head -c $LEFTLEN)
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RIGHTSEP=$(echo $SEP | head -c $RIGHTLEN)
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>/dev/stderr echo "$LEFTSEP $1 $RIGHTSEP"
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fi
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fi
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}
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need_tag() {
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if [ -z "$1" ]; then
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die "Please specify a tag or token. To see available tags and tokens, run: $0 list"
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fi
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}
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need_settings() {
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if [ -z "$1" ]; then
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die "Please specify a settings file."
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elif [ ! -f "$1" ]; then
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die "Settings file $1 doesn't exist."
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fi
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}
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need_ips_file() {
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IPS_FILE=$1
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if [ -z "$IPS_FILE" ]; then
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die "IPS_FILE not set."
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fi
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if [ ! -s "$IPS_FILE" ]; then
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die "IPS_FILE $IPS_FILE not found. Please run: $0 ips <TAG>"
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fi
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}
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