check-if-unicode

#!/bin/bash


#   License:        GNU GPL v.3		http://www.gnu.org/licenses/gpl-3.0.en.html
#   Destiny:        Displays if name and text contain unicode characters.
#                   You can use with file or with pipe "|"
    VERSION="beta 1"
#   Info:       Requires testing.    
#   Date:       04.2023
#   Source:     https://github.com/tele1/LinuxScripts

#   Script usage:       bash script_name file
#           or:         cat file | bash script_name
#
#===============================================================================


NC='\e[0m'    # Reset Color
GN='\e[0;32m' # Green ECHO
RD='\e[0;31m' # Red ECHO

Func_GREEN_ECHO() {    echo -e "${GN}$@${NC}"   ;}
Func_RED_ECHO()   {    echo -e "${RD}${@}${NC}" ;}

Func_noascii_quiet() { LANG=C grep -q --color=always '[^ -~]\+' ;}
Func_noascii_show()  { LANG=C grep  --color=always '[^ -~]\+'   ;}

echo " "

if [ -n "$1" ]; then
    Var1="$1"
    if Func_noascii_quiet <<< "$Var1"  ; then
        Func_RED_ECHO "  This name of file contains Unicode:"
        Func_noascii_show <<< "$Var1"
        echo " "
        Func_RED_ECHO "  This is this line with cat -vet:"
        cat -vet <<< "$Var1" | grep  --color=always 'M-\|\^'
    else
        Func_GREEN_ECHO "   This name of file safe: ascii name"
        
        if Func_noascii_quiet < "$Var1"  ; then
            Func_RED_ECHO "     This file contains Unicode:"
            Func_noascii_show < "$Var1"
            echo " "
            Func_RED_ECHO "  This is this line with cat -vet:"
            cat -vet < "$Var1" | grep  --color=always 'M-\|\^'
        else
            Func_GREEN_ECHO "   This is safe: ascii file"
        fi
    fi
    
    
elif [ -p /dev/stdin ]; then
    Var1="$(</dev/stdin)"

    if Func_noascii_quiet <<< "$Var1"  ; then 
        Func_RED_ECHO "  This file contains Unicode:"
        Func_noascii_show <<< "$Var1"
        echo " "
        Func_RED_ECHO "  This is this line with cat -vet:"
        cat -vet <<< "$Var1" | grep  --color=always 'M-\|\^'
    else
        Func_GREEN_ECHO "This is safe: ascii file"
    fi
fi

echo " "