TagSpaces (https://www.tagspaces.org/) を使うに当たって CLI 上でタグを付与 (ファイル名を変更) するユーティリティツール

addtag.sh

#!/bin/bash

set -euf

# set exported tagspaces json file path
# e.g. json_name="$HOME/.config/tag-lib.json" addtag -show
declare json_name

help_message() {
    echo "Usage:"
    echo -e "\taddtag ([option] [filename | tag_title] | [filename] tagname...)"
    echo -e "\toption:"
    echo -e "\t\t-rm:\tremoving tags from [filename]"
    echo -e "\t\t-show:\tshow specified tag"
    echo -e "\t\t-V,--version:\tversion information"
}

tag_process() {
    eval arr=(${1})
    if [ ${#arr[@]} -eq 0 ]; then
        help_message
        exit 1
    fi
    arr=$(printf "%s " "${arr[@]}" | xargs -n1 | sort -g | uniq | xargs)
    echo "[${arr}]"
}

get_fname() {
    fpath="$1"
    fname="$(basename "$fpath")"
    fname="${fname%.*}"
    echo "$fname"
}

get_extension() {
    fpath="$1"
    fname="$(basename "$fpath")"
    ext="${fname##*.}"
    if [ "$ext" = "$fname" ]; then
        ext=""
    else
        ext=".${ext}"
    fi
    echo "$ext"
}

already_tagged() {
    already_tag_str="$(echo "$1" |\
        awk '{print substr($0, index($0, "["), index($0, "]") -1 )}')"
    already_tag_str="$(echo ${already_tag_str/%?/})"
    already_tag_str="${already_tag_str:1}"
    echo "$already_tag_str"
}

version() {
    echo "addtag for TagSpaces v$1"
}

read_tag_json() {
    if [ -z "$json_name" ] || [ ! -f "$json_name" ]; then
        return -1
    fi
    cat "$json_name" |\
        jq ".tagGroups[].children[].title"
}

if [ $# -gt 0 ]; then
    if [ "$1" = "-V" ]; then
        version "0.0.1"
        exit 0
    elif [ "$1" = "--version" ]; then
        version "0.0.1"
        exit 0
    elif [ "$1" = "-rm" ]; then
        if [ -n "$2" ] && ([ -f "$2" ] || [ -d "$2" ]); then
            fname="$(get_fname "$2")"
            extension="$(get_extension "$2")"
            fname_without_tag="$(echo "$fname" | sed -e "s/\[.*\]//g")"
            if [ -z "$(already_tagged "$fname")" ]; then
                echo "this file ($fname) is not tagged"
                echo "nothing to do"
                exit 0
            else
                fname="${fname_without_tag}${extension}"
                new_fpath="$(dirname "$2")/${fname}"
                echo "remove tagging..."
                echo "rename to $new_fpath from $2"
                mv "$2" "$new_fpath"
                exit 0
            fi
        elif [ -n "$2" ]; then
            echo "no such file or directory: $2"
            exit 1
        else
            help_message
            exit 1
        fi
    elif [ "$1" = "-show" ]; then
        read_tag_json
        res=$?
        if [ $res -eq -1 ]; then
            echo "invalid json file or no such file or directory" >&2
            exit 1
        fi
        exit 0
    elif [ -f "$1" ] || [ -d "$1" ]; then
        args=("$@")
        for((i=1;i<$#;i++)) do
            QUOTED_ARGS+=("'${args[$i]}'")
        done
        
        fname="$(get_fname "$1")"
        extension="$(get_extension "$1")"

        atagged="$(already_tagged "$fname")"
        tags=""
        if [ -z "$atagged" ]; then
            tags="$(tag_process "${QUOTED_ARGS[*]}")"
            added_tags="${tags:1:-1}"
            echo "set new tags: $added_tags"
        elif [ -n "$atagged" ]; then
            for tag in "$atagged"; do
                QUOTED_ARGS+=("'${tag}'")
            done
            tags="$(tag_process "${QUOTED_ARGS[*]}")"
            echo "this file is already tagged"
            added_tags="${tags:1:-1}"
            echo "added tags: $added_tags"
        fi

        fname_without_tag="$(echo "$fname" | sed -e "s/\[.*\]//g")"
        fname="$fname_without_tag${tags}${extension}"
        new_fpath="$(dirname "$1")/${fname}"
        echo "rename to $new_fpath from $1"
        mv "$1" "$new_fpath"
    else
        echo "no such file or directory: $1" >&2
        exit 1
    fi
else
    help_message
fi