68 lines
1.8 KiB
Bash
68 lines
1.8 KiB
Bash
# shellcheck shell=bash
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set -e
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# Be sure that we know the target name
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[[ -z $1 ]] && exit
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TARGET=$1 # Remember the target build we are looking for
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MAKE_PPID=$2
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declare -r CSI=$'\e[' # DEC terminology, Control Sequence Introducer
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declare -r CURSOR_OFF=${CSI}$'?25l'
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declare -r CURSOR_ON=${CSI}$'?25h'
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declare -r ERASE_LINE=${CSI}$'2K'
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declare -r FRAME_OPEN=${CSI}$'2G['
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declare -r FRAME_CLOSE=${CSI}$'63G]'
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declare -r TS_POSITION=${CSI}$'65G'
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declare -r RESET_LINE=${CURSOR_OFF}${ERASE_LINE}${FRAME_OPEN}${FRAME_CLOSE}
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declare -r GRAPHIC_STR="| / - \\ + "
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declare -i SEC=0 # Seconds accumulator
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declare -i PREV_SEC=0
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# Prevent segfault on stripping phases
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if [[ "$BASHBIN" = "/tools/bin/bash" ]] ; then
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SLEEP=/tools/bin/sleep
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elif [ -x /bin/sleep ] ; then
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SLEEP=/bin/sleep
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else
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SLEEP=/usr/bin/sleep
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fi
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write_or_exit() {
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# make has been killed or failed or run to completion, leave
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[[ ! -e /proc/${MAKE_PPID} ]] && echo -n "${CURSOR_ON}" && exit
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# Target build complete, leave.
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[[ -f ${TARGET} ]] && echo -n "${CURSOR_ON}" && exit
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# It is safe to write to the screen
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echo -n "$1"
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}
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# initialize screen
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write_or_exit "${RESET_LINE}${TS_POSITION}0 min. 0 sec"
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# loop forever..
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while true ; do
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# Loop through the animation string
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for GRAPHIC_CHAR in ${GRAPHIC_STR} ; do
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write_or_exit "${CSI}$((SEC + 3))G${GRAPHIC_CHAR}"
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$SLEEP .12 # This value MUST be less than .2 seconds.
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done
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# A BASH internal variable, the number of seconds the script
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# has been running. modulo convert to 0-59
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SEC=$((SECONDS % 60))
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# Detect rollover of the seconds.
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(( PREV_SEC > SEC )) && write_or_exit "${RESET_LINE}"
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PREV_SEC=$SEC
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# Display the accumulated time. div minutes.. modulo seconds.
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write_or_exit "${TS_POSITION}$((SECONDS / 60)) min. $SEC sec"
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done
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exit
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