added login/ls/list

[gregoa/movein.git] / movein

#!/bin/sh
#
# Copyright © 2008 Mike O'Connor <stew@vireo.org>
#
# 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 2, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
# USA.  

set -e

usage() {
    bn=$(basename $0)
    cat <<EOF
$0: manage home directory using mr

NAME
  $bn - a command to manage detached git repositories using mr

SYNOPSIS
  $bn command [options]

  $bn init
  $bn ls
  $bn list
  $bn add repository_name
  $bn new repository_name file1 [file2 file3...]
  $bn login repository_name

COMMANDS
  init 
      create ~/.mrconfig

  ls
  list
      show a list of repositories

  add repository_name
      checkout the repository from the remote host and add it to
      mr's configuration

  new repository_name file1 [file2 file3...]  
      create a new repository on the remote host, and checkin the
      listed files to the new repository.   Add the new repository
      to mr's configuration

  login repository_name
      start a subshell in repository_name

EOF

    exit 1
}


GIT_HOST=git.vireo.org
REMOTE_REPOS=~/git
LOCAL_REPOS=~/.movein
MRCONFIG=~/.mrconfig
MOVEINRC=~/.moveinrc

[ -e "$MOVEINRC" ] && . "$MOVEINRC"

init() {

    if [ $# -ne 0 ]; then 
        usage
    fi
    
    if [ -e $MRCONFIG ]; then
        echo $MRCONFIG already exists
        exit 1
    fi
    
    if [ -e $MOVEINRC ]; then
        echo $MOVEINRC already exists
        exit 1
    fi

    echo -n "git server hostname? [git.vireo.org] " 
    read GIT_HOST
    if [ -z "$GIT_HOST" ]; then 
        GIT_HOST=git.vireo.org
    fi

    echo -n "path to remote repositories? [~/git] " 
    read REMOTE_REPOS
    if [ -z "$REMOTE_REPOS" ]; then 
        REMOTE_REPOS=~/git
    fi

    echo -n "Local repository directory? [~/.movein] " 
    read LOCAL_REPOS
    if [ -z "$LOCAL_REPOS" ]; then 
        LOCAL_REPOS=~/.movein
    fi

    echo -n "Location of .mrconfig file? [~/.mrconfig] " 
    read MRCONFIG
    if [ -z "$MRCONFIG" ]; then 
        MRCONFIG=~/.mrconfig
    fi

    cat <<EOF > $MOVEINRC
GIT_HOST=$GIT_HOST
REMOTE_REPOS=$REMOTE_REPOS
LOCAL_REPOS=$LOCAL_REPOS
MRCONFIG=$MRCONFIG
EOF

    if [ ! -d "$LOCAL_REPOS" ]; then 
        mkdir -p "$LOCAL_REPOS"
    fi

    cat <<END > $MRCONFIG
[DEFAULT]
include = cat /usr/share/mr/git-fake-bare
END

    
}

login() {
    if [ $# -ne 1 ]; then 
        usage
    fi

    export GIT_DIR="$LOCAL_REPOS/${1}.git"
    export GIT_WORK_TREE="$GIT_DIR/$(git config --get core.worktree)"

    $SHELL -i || :
}

add() {
    if [ $# -ne 1 ]; then 
        usage
    fi
    REPO_NAME=$1.git ; shift
    LOCAL_REPO=$LOCAL_REPOS/$REPO_NAME
    REPO_URL=ssh://$GIT_HOST/$REMOTE_REPOS/$REPO_NAME

    if [ -e "$LOCAL_REPO" ]; then
        echo $LOCAL_REPO already exists
        exit 1
    else
        trap "rm -rf $LOCAL_REPO" 0
        mkdir "$LOCAL_REPO"
        export GIT_DIR="$LOCAL_REPO"
        git init --bare
        git remote add origin $REPO_URL
        git config branch.master.remote origin
        git config branch.master.merge refs/heads/master
        git config core.worktree ../../
        git config core.bare false
        GIT_WORK_TREE="$PWD" git pull
        trap - 0
        cat <<END >> $MRCONFIG

[$LOCAL_REPO]
checkout = git_fake_bare_checkout '$REPO_URL' '$REPO_NAME' '../../'
END
    fi

}

list() {
    find "${LOCAL_REPOS}" -mindepth 1 -maxdepth 1 -type d | sed 's,^.*/\([^/]*\).git$,\1,'
}

new() {
    if [ $# -lt 2 ]; then 
        usage
    fi
    REPO_NAME=$1.git ; shift
    LOCAL_REPO="$LOCAL_REPOS/$REPO_NAME"
    REPO_URL="ssh://$GIT_HOST/$REMOTE_REPOS/$REPO_NAME"

    if [ ! -e "$1" ]; then
        echo $1 not found
        exit 1
    fi

    if [ -e "$LOCAL_REPO" ]; then
        echo $LOCAL_REPO already exists
        exit 1
    else
        trap "rm -rf $LOCAL_REPO" 0
        mkdir -p "$LOCAL_REPO"

        ssh $GIT_HOST "
               GIT_DIR=$REMOTE_REPOS/$REPO_NAME git --bare init
        " </dev/null

        export GIT_DIR="$LOCAL_REPO"
        git init --bare
        git remote add origin $REPO_URL
        git config branch.master.remote origin
        git config branch.master.merge refs/heads/master
        git config core.worktree ../../
        git config core.bare false
#       for file in  ; do 
        export GIT_WORK_TREE="$PWD"
            git add "$@"
#       done
        git commit -m "initial checkin"
        git push --all
        
        trap - 0
        cat <<END >> $MRCONFIG

[$LOCAL_REPO]
checkout = git_fake_bare_checkout '$REPO_URL' '$REPO_NAME' '../../'
END
    fi

}


command=$1 ; shift
case "$command" in 
    init)
        init $@
        ;;
    add)
        add $@
        ;;
    new)
        new $@
        ;;
    login)
        login $@
        ;;
    ls)
        list
        ;;
    list)
        list
        ;;

    *)
        usage
        exit 1
        ;;
esac