djcev.com

#!/bin/sh
#
#  Copyright (c) 2015-2022, Cameron Vanderzanden. Available under the
#  terms of the 2-clause BSD license. Please see the file "LICENSE" in
#  the root dir of this repository for more information.
#
#- test_mimetype.sh 2016/01/05 cev, updated 2021/07/23 and 2022/01/29 cev
## Usage: test_mimetype.sh [-hvV] [-t type] <file>
## 
##     Call file(1) on <file> to determine if <file> is a file of mime type
##     [-t type]. Type defaults to text/plain.
## 
##       -h     Show help
##       -t     Test against mimetype [type].
##       -v     Verbose
##       -V     Print version info

[ -x $HOME/.local/bin/cev_print.sh ] && . $HOME/.local/bin/cev_print.sh

self="${0##*'/'}"
testtype="text/plain"
verbose=""

while getopts "ht:vV?" option; do
    case $option in
        h) print_help && exit ;;
        t) testtype="$OPTARG" ;;
        v) verbose="Y" ;;
        V) print_version && exit ;;
        "?") print_help && exit ;;
    esac
    shift $((OPTIND - 1))
done

if [ $# -lt 1 ]; then
    print_nofile
    exit 2
else
    filename="$@"
    shortname="$(basename "$@")"
    
    if [ ! -f "$filename" ]; then
        print_filenotfound "$filename"
        exit 3
    fi
    
    filetype="$(file -b --mime-type "$filename")"
    if [ "$filetype" = "$testtype" ]; then
        if [ "$verbose" ]; then
            print_self
            printf "%b%s%b is %b%s%b\n" \
                "$_high" "$shortname" "$_norm" "$_high" "$testtype" "$_clear"
        fi
        exit 0
    else
        if [ "$verbose" ]; then
            print_self
            printf "%b%s%b is not %b%s%b\n" \
                "$_high" "$shortname" "$_norm" "$_high" "$testtype" "$_clear"
        fi
        exit 1
    fi
fi