snippets.git - Just random code snippets.


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101

#!/bin/zsh

set -e

prog=$(basename $0)

faad=faad
lame=lame
id3v2=id3v2

dest=
artist_dir=

function die() {
        echo >&2 "$@"
        exit 1
}

function do_help() {
        local exit_with=${1:-0}
        local out=
        [[ "$exit_with" -ne 0 ]] && out=">&2"
        eval echo $out "$prog [ --prefix DIR ] [ --artist-dir ] [ file.m4a ... ]"
        exit $exit_with
}

while [[ "$1" =~ "^-" ]] ; do
        cmd=$1 ; shift
        case "$cmd" in
            -p|--prefix)
                dest=$1
                [[ -d "$dest" ]] || die "argument of --prefix must be a directory"
                shift
                ;;
            -a|--artist-dir)
                artist_dir=1
                ;;
            -h|--help)
                do_help 0
                ;;
            --debug)
                set -x
                ;;
            -*)
                do_help 1
                ;;
        esac
done

for prog in $faad $lame $id3v2 ; do
        ( which $prog >/dev/null 2>&1 ) || die "cannot find $prog"
done

{ 
        if [[ -n "$1" ]] ; then
                [[ -f "$1" ]] || die "$1 is not a file"
                ls -1d $@ || die "unable to find file(s)"
        else
                ls -1d *.m4a || die "no files match *.m4a"
        fi
} | while read s ; do
        echo \# $s
        i="${dest:-.}/${s/.m4a/.nfo}"
        b=$(basename $s)
        b=${b%.m4a}

        [[ -f ${s} ]] || die "file ${s} does not exist"

        $faad -i ${s} > ${i} 2>&1
        sa=$(grep "^artist: ." ${i} | cut -d ' ' -f 2-)
        sA=$(grep "^album: ." ${i} | cut -d ' ' -f 2-)
        sg=$(grep "^genre: ." ${i} | cut -d ' ' -f 2-)
        st=$(grep "^title: ." ${i} | cut -d ' ' -f 2-)
        rm -f ${i}

        if [[ "${b}" =~ "^.+ - .+$" ]] ; then
                [[ -z "${sa}" ]] && sa=${b% - *}
                [[ -z "${st}" || "${st}" =~ "^Track [0-9]+$" ]] && st=${b#* - }
        fi

        [[ -z "${sa}" ]] && sa=Unknown

        echo \# artist = ${sa}
        echo \# album = ${sA}
        echo \# genre = ${sg}
        echo \# title = ${st}

        if [[ -n $artist_dir && -n "${sa}" ]] ; then
                da=${sa//\// }
                mkdir -p "${dest:-.}/${da}"
                d="${dest:-.}/${da}/${s/.m4a/.mp3}"
        else
                d="${dest:-.}/${s/.m4a/.mp3}"
        fi

        $faad -o - ${s} | $lame - ${d}

        if [[ -n "${st}" || -n "${sa}" ]] ; then
                $id3v2 -a ${sa} -A ${sA} -g ${sg} -t ${st} ${d}
        fi
done