md5sum based file repository

fsx.sh

#!/bin/sh

#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#  
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#  
#  You should have received a copy of the GNU General Public License
#  along with this program. If not, see <http://www.gnu.org/licenses/>.


cmd_help() {
    echo "md5sum based file repository"
    echo "usage: fsx command [arguments]"
    echo "commands:"
    echo "  init          initialize"
    echo "  add <file>    add file into repository"
    echo "  move <file>   move file into repository"
    echo "  list          list all files in repository"
    exit 1
}

cmd_add_file() {

    echo ">>>" add file $1
    
    MD5FILE=`md5sum "$1" | awk '{print $1}'`
    
    if [ -f ".fsx/$MD5FILE" ]
    then
        echo $MD5FILE `realpath "$1"` >> ".fsx/MD5SUM"
    else
        cp "$1" ".fsx/$MD5FILE"
        echo $MD5FILE `realpath "$1"` >> ".fsx/MD5SUM"
    fi
    
    cat ".fsx/MD5SUM" | sort | uniq > ".fsx/MD5SUM.tmp"
    cp  ".fsx/MD5SUM.tmp" ".fsx/MD5SUM"
    cat ".fsx/MD5SUM" | grep $MD5FILE
    
    exit 0
}

cmd_move_file() {

	FILE=`realpath '$1'`

    echo ">>>" move file $FILE
    
    MD5FILE=`md5sum "$FILE" | awk '{print $1}'`
    
    if [ -f ".fsx/$MD5FILE" ]
    then
        mv "$FILE" ".fsx/$MD5FILE.X"
        echo $MD5FILE $FILE >> ".fsx/MD5SUM"
    else
        mv "$FILE" ".fsx/$MD5FILE"
        echo $MD5FILE $FILE >> ".fsx/MD5SUM"
    fi
    
    cat ".fsx/MD5SUM" | sort | uniq > ".fsx/MD5SUM.tmp"
    cp  ".fsx/MD5SUM.tmp" ".fsx/MD5SUM"
    cat ".fsx/MD5SUM" | grep $MD5FILE
    
    exit 0
}

cmd_add_dir() {
    echo ">>>" add dir $1
    echo ">>> sorry, not yet supported"
    exit 0
}

cmd_list() {
    if [ -f ".fsx/MD5SUM" ]
    then
        cat ".fsx/MD5SUM"
    fi
    exit 0
}

cmd_init() {
    if [ -d ".fsx" ] || mkdir ".fsx"
    then
        echo 0k
    fi
    exit 0
}

if [ "$1" = "init" ]
then
    cmd_init
elif [ "$1" = "list" ]
then
    cmd_list
elif [ "$1" = "add" ]
then
    if [ -f "$2" ]
    then
        cmd_add_file "$2"
    elif [ -d "$2" ]
    then
        cmd_add_dir "$2"
    fi
elif [ "$1" = "move" ]
then
    if [ -f "$2" ]
    then
        cmd_move_file "$2"
    fi
fi

cmd_help