gitext

#!/bin/bash

function source_dir {
    local SOURCE="${BASH_SOURCE[0]}"
    DIR="$( dirname "$SOURCE" )"
    while [ -h "$SOURCE" ]
    do
        SOURCE="$(readlink "$SOURCE")"
        [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
        DIR="$( cd -P "$( dirname "$SOURCE"  )" && pwd )"
    done
    DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
}

set -e
set -o pipefail

source_dir


COMMAND=$1

case "$COMMAND" in
        branch)
            git rev-parse --symbolic-full-name --abbrev-ref HEAD
            ;;

        revision)
            git rev-parse $(git rev-parse --symbolic-full-name --abbrev-ref HEAD)
            ;;

        rev)
            git rev-parse $(git rev-parse --symbolic-full-name --abbrev-ref HEAD)
            ;;

        checkout)
            if [ $(git branch | grep -cw $2) == 0 ]; then
                git checkout --track -b $2 remotes/origin/$2
            else
                git checkout $2
            fi
            ;;

        remoteexists)
            if [ $(git branch -r | grep -cw origin/$2) == 0 ]; then
                # echo remote branch $2 does not exists
                exit 2
            else
                # echo remote branch $2 exists
                exit 0
            fi
            ;;

        localexists)
            if [ $(git branch | grep -cw $2) == 0 ]; then
                # echo local branch $2 does not exists
                exit 2
            else
                # echo local branch $2 exists
                exit 0
            fi
            ;;

        remoteurl)
            echo "$(git config --get remote.origin.url)"
            ;;

         meta)
            SUB_COMMAND=$2
            FILES="${PWD}/*"
            for file in ${FILES}; do
                if [ -d $file ]; then
                    case "$SUB_COMMAND" in
                       list)
                           cd $file
                           echo $(gitext remoteurl)
                           cd ..
                           ;;

                       listbranch)
                           cd $file
                           echo -n "$(${DIR}/gitext remoteurl)  "
                           ${DIR}/gitext branch
                           cd ..
                           ;;

                       branchOf)
                           cd $file
                           branch=$(${DIR}/gitext branch)
                           if [[ $branch == $3 ]]; then
                               echo "$(${DIR}/gitext remoteurl)"
                           fi
                           cd ..
                           ;;

                       hasBranch)
                           if [ -z $3 ]; then
                               exit 0
                           fi
                           cd $file
                           if [ $(git branch | grep -cw $3) != 0 ]; then
                               gitext remoteurl
                           else
                              if [ $(git branch -r | grep -cw origin/$3) != 0 ]; then
                                  gitext remoteurl
                              fi
                           fi
                           cd ..
                           ;;

                       checkout)
                           cd $file
                           gitext checkout $3
                           cd ..
                           ;;

                       reset)
                           cd $file
                           echo -n "$(${DIR}/gitext remoteurl)  "
                           git reset $3 $4
                           cd ..
                           ;;

                       *)
                           echo "Unknown meta command: $SUB_COMMAND"
                           echo "Use {list|listbranch|branchOf BRANCH|hasBranch BRANCH|checkout BRANCH|reset TYPE BRANCH}"
                           exit 1
                    esac
                fi
            done
            ;;

        *)
            echo "Usage: $0 {branch|rev|checkout BRANCH|remoteexists BRANCH|localexists BRANCH|meta SUB-COMMAND{list|listbranch|checkoutIf BRANCH}}"
            exit 1

esac