idevicesyslog target filter shell script

idsl-filter.sh

#!/bin/bash

#name:   idevicesyslog target filter shell script
#author: SerKo <https://github.com/serkoape>
#usage:  idevicesyslog | ./idsl-filter.sh "<target name>"

#idevicesyslog | ./idsl-filter.sh "SpringBoard"
#idevicesyslog | ./idsl-filter.sh "SpringBoard(Custom.dylib)"
#idevicesyslog | sudo sh ./idsl-filter.sh "SpringBoard(Custom.dylib)"

IFS='' # fix for tab space
IS_PRINT=false
REGEX_ISLOG="^[A-Z][a-z]{2} [0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2} [A-Za-z0-9\-]{1,} (.*)\[[0-9]*\]"

while read log; do
    if [[ $log =~ $REGEX_ISLOG ]]; then
        if [[ "${BASH_REMATCH[1]}" == *"$1"* ]]; then IS_PRINT=true; else IS_PRINT=false; fi
    fi
    if $IS_PRINT; then printf "$log\n"; fi # use "${log//\^\[\[/\e[}\n"; if HBLog color cannot show in terminal
done