Minecraft client chat log search

clientchat.sh

#!/usr/bin/env bash



# Minecraft folder
cd /Users/your_system_username/Library/Application\ Support/minecraft



function scan_logs {

    VAL="$1"

    # Search for query
    if [ "$(echo ${#STR})" -ge 1 ]; then
        VAL="$( echo "${VAL}" | grep -i ${STR} )"
    fi

    # Clean up the output
    CLEAN="$( echo "${VAL}" | sed 's/\[Client thread\/INFO\]:*.\[CHAT\]//' )"

    echo "$CLEAN"

}



if [ -z "$1" ]; then

    # Help text
    echo "Usage:"
    echo "--list to show available log files"
    echo "--log <file> [search] to print a log file"
    echo "--follow to follow live chat output"

elif [ $1 == "--list" ]; then

    # Iterate log files and print their names
    pref="./logs/"
    suf=".log.gz"
    for i in ./logs/*log.gz; do
        s="${i#$pref}"
        s="${s%$suf}"
        echo $s
    done
    echo "latest"

elif [ $1 == "--log" ]; then

    FILE=$2
    STR=$3

    if [ -z "$2" ]; then
        # No file was specified
        echo "You must specify a log file!"
    elif [ $2 == "latest" ]; then
        # Read latest.log
        VAL="$( grep -Fi '[chat]' ./logs/latest.log )"
        scan_logs "$VAL"
    else
        # Read gzipped log file
        VAL="$( zgrep -Fi '[chat]' ./logs/${FILE}.log.gz )"
        scan_logs "$VAL"
    fi

elif [ $1 == "--follow" ]; then

    tail -f ./logs/latest.log | grep -Fi --line-buffered '[chat]' | sed 's/\[Client thread\/INFO\]:*.\[CHAT\]//'

fi