Quelle g Sprache: SML

#!/usr/bin/env bash
#
# Wrapper for git to handle more subdirs at the same time
#

if [ -n "$g_debug" ] ; then
    set -x
fi

SUBMODULES_ALL="dictionaries helpcontent2 translations"

pushd $(dirname $0) > /dev/null
if [ -f ${BUILDDIR}/config_host.mk ] ; then
    # we are in the SRCDIR
    SRC_ROOT=$(< ${BUILDDIR}/config_host.mk grep -a SRC_ROOT | sed -e "s/.*=//")
else
    SRC_ROOT=$(pwd)
fi
popd > /dev/null

COREDIR="$SRC_ROOT"

usage()
{
    git
    echo
    echo "Usage: g [options] [git (checkout|clone|fetch|gc|grep|pull|push|reset) [git options/args..]]"
    echo ""
    echo " -z restore the git hooks and do other sanity checks"
}

refresh_create_link()
{
    local hook_name=$1
    local hook=$2
    local lnarg=$3

    # if it doesn't exist or is neither a symlink nor sharing the same inode (hardlink)
    if [ ! -e "${hook?}" ] || [ ! $ -L "${hook?}" -o "${hook_name}" -ef "${hook?}" $ ] ; then
        rm -f "${hook?}"
        ln -f $lnarg "${hook_name}" "${hook?}"
    fi
}

refresh_submodule_hooks()
{
    local repo=$1
    local lnarg=$2
    local hook
    local hook_name

    if [ -d "${repo?}"/.git ] ; then
        # use core's hook by default
        for hook_name in "${COREDIR?}/.git-hooks"/* ; do
            if [ ! -e "${hook_name}" ] ; then
                continue
            fi
            hook="${repo?}/.git/hooks/${hook_name##*/}"
            refresh_create_link "${hook_name}" "${hook?}" "$lnarg"
        done
        # override if need be by the submodules' own hooks
        for hook_name in "${COREDIR?}/${repo?}/.git-hooks"/* ; do
            if [ ! -e "${hook_name}" ] ; then
                continue
            fi
            hook="${repo?}/.git/hooks/${hook_name##*/}"
            refresh_create_link "${hook_name}" "${hook?}" "$lnarg"
        done
    elif [ -d .git/modules/"${repo}"/hooks ] ; then
        for hook_name in "${COREDIR?}/.git-hooks"/* ; do
            if [ ! -e "${hook_name}" ] ; then
                continue
            fi
            hook=".git/modules/${repo?}/hooks/${hook_name##*/}"
            refresh_create_link "${hook_name}" "${hook?}" "$lnarg"
        done
        # override if need be by the submodules' own hooks
        for hook_name in "${COREDIR?}/${repo?}/.git-hooks"/* ; do
            if [ ! -e "${hook_name}" ] ; then
                continue
            fi
            hook=".git/modules/${repo?}/hooks/${hook_name##*/}"
            refresh_create_link "${hook_name}" "${hook?}" "$lnarg"
        done
    fi

}

refresh_all_hooks()
{
    local repo
    local hook_name
    local hook
    local gitbash
    local lnarg

    pushd "${COREDIR?}" > /dev/null

    # it is 'GIT for Windows'
    gitbash=$(echo $OSTYPE | grep -ic msys)

    # git-bash/MSYS doesn't create symlinks by default, and "real" symlinks are restricted to
    # Admin-mode or when devmode is activated, junction points as fallback would work for bash/
    # regular use but not when git tries to spawn them, similar for plain windows shortcuts (worse
    # because running the hooks will fail silently/they'd be inactive)
    # ln -s without setting MSYS to contain winsymlinks:{lnk,native,nativestrict,sys} to force one
    # of the other modes described above will do plain copies.
    # So in case of git-bash use hardlinks since those work just fine, everywhere else use symlinks
    if [ $gitbash -ne 1 ]; then
        lnarg="-s"
    fi
    # There's no ".git" e.g. in a secondary worktree
    if [ -d ".git" ]; then
        for hook_name in "${COREDIR?}/.git-hooks"/* ; do
            hook=".git/hooks/${hook_name##*/}"
            refresh_create_link "${hook_name}" "${hook?}" "$lnarg"
        done
    fi

    for repo in ${SUBMODULES_ALL?} ; do
        refresh_submodule_hooks "$repo" "$lnarg"
    done

    popd > /dev/null

}

set_push_url()
{
    local repo

    repo="$1"
    if [ -n "$repo" ] ; then
        pushd "${COREDIR?}/${repo?}" > /dev/null
    else
        pushd "${COREDIR?}" > /dev/null
        repo="core"
    fi
    echo "setting up push url for ${repo?}"
    if [ "${repo?}" = "helpcontent2" ] ; then
        git config remote.origin.pushurl "ssh://${PUSH_USER}logerrit/help"
    else
        git config remote.origin.pushurl "ssh://${PUSH_USER}logerrit/${repo?}"
    fi
    popd > /dev/null
}

set_push_urls()
{
    PUSH_USER="$1"
    set_push_url
    for repo in ${SUBMODULES_ACTIVE?} ; do
        set_push_url "${repo?}"
    done
}

get_active_submodules()
{
    SUBMODULES_ACTIVE=""
    local repo

    for repo in ${SUBMODULES_ALL?} ; do
        if [ -d "${repo?}"/.git ] || [ -f "${repo?}"/.git ] ; then
            SUBMODULES_ACTIVE="${repo?} ${SUBMODULES_ACTIVE?}"
        fi
    done
}

get_configured_submodules()
{
    SUBMODULES_CONFIGURED=""
    if [ -f ${BUILDDIR}/config_host.mk ] ; then
        SUBMODULES_CONFIGURED=$(< ${BUILDDIR}/config_host.mk grep -a GIT_NEEDED_SUBMODULES | sed -e "s/.*=//")
    else
        # if we need the configured submodule before the configuration is done. we assumed you want them all
        SUBMODULES_CONFIGURED=${SUBMODULES_ALL?}
    fi
}

get_git_reference()
{
    REFERENCED_GIT=""
    if [ -f ${BUILDDIR}/config_host.mk ]; then
        REFERENCED_GIT=$(< ${BUILDDIR}/config_host.mk grep -a GIT_REFERENCE_SRC | sed -e "s/.*=//")
    fi
    LINKED_GIT=""
    if [ -f ${BUILDDIR}/config_host.mk ]; then
        LINKED_GIT=$(< ${BUILDDIR}/config_host.mk grep -a GIT_LINK_SRC | sed -e "s/.*=//")
    fi
}

do_shortcut_update()
{
    local module
    local repo

    for module in $SUBMODULES_CONFIGURED ; do
        if [ ! -d "${module?}"/.git ] ; then
            case "${module?}" in
                helpcontent2)
                    if [ -d clone/help/.git ] ; then
                        repo="clone/help/.git"
                    fi
                    ;;
                *)
                    if [ -d clone/"${module?}"/.git ] ; then
                        repo="clone/${module?}/.git"
                    fi
                    ;;
            esac
            if [ -n "$repo" ] ; then
                cp -r "${repo?}" "${module?}/."
            fi
        fi
    done
}

do_git_cmd()
{
    echo "cmd:$*"
    git "$@"
    git submodule foreach git "$@" $KEEP_GOING
}

do_checkout()
{
    local cmd
    local create_branch="0"
    local branch
    local module

    git checkout "$@" || return $?
    for cmd in "$@" ; do
        if [ "$cmd" = "-f" ]; then
            continue
        elif [ "$cmd" = "-b" ] ; then
            create_branch=1
        elif [ "$create_branch" = "1" ] ; then
            branch="$cmd"
            create_branch=0
        fi
    done
    if [ -f .gitmodules ] ; then
        git submodule update --progress
        if [ -n "$branch" ] ; then
            git submodule foreach git checkout -b "${branch}" HEAD || return $?
        fi
    else
        # now that is the nasty case we moved prior to submodules
        # delete the submodules left over if any
        for module in $SUBMODULES_ALL ; do
            echo "clean-up submodule $module"
            rm -fr "${module}"
        done
        # make sure we have the needed repo in clone
        ./g clone && ./g -f checkout "$@" || return $?
    fi
    return $?
}

do_reset()
{
    git reset "$@" || return $?
    if [ -f .gitmodules ] ; then
        git submodule update --progress || return $?
    else
        # now that is the nasty case we moved prior to submodules
        # delete the submodules left over if any
        for module in $SUBMODULES_ALL ; do
            echo "clean-up submodule $module"
            rm -fr "${module}"
        done
        # make sure we have the needed repo in clone
        ./g clone && ./g -f reset "$@"
    fi
    return $?;
}

do_init_modules()
{
    local module
    local configured

    do_shortcut_update

    for module in $SUBMODULES_CONFIGURED ; do
        if [ -n "$LINKED_GIT" ] ; then
            if ! [ -d ".git/modules/${module}" ]; then
                ./bin/git-new-module-workdir "${LINKED_GIT}/${module}" "${module}"
            fi
        fi
        configured=$(git config --local --get submodule."${module}".url)
        if [ -z "$configured" ] ; then
            git submodule init "$module" || return $?
        fi
    done
    for module in $SUBMODULES_CONFIGURED ; do
        if [ -n "$REFERENCED_GIT" ] ; then
            git submodule update --reference "$REFERENCED_GIT/.git/modules/$module" --progress "$module" || return $?
        else
            git submodule update --progress "$module" || return $?
        fi
    done
    return 0
}

# no params, no action
if [ "$#" -eq "0" ] ; then
    usage
fi

if [ ! "$(type -p git)" ]; then
    echo "Cannot find the git binary! Is git installed and is in PATH?"
    exit 1
fi

get_active_submodules
get_configured_submodules
get_git_reference

# extra params for some commands, like log
EXTRA=
COMMAND="$1"
PAGER=
RELATIVIZE=1
PUSH_ALL=
PUSH_USER=
PUSH_NOTES=
LAST_WORKING=
SET_LAST_WORKING=
ALLOW_EMPTY=
KEEP_GOING=
REPORT_REPOS=1
REPORT_COMMANDS=0
REPORT_COMPACT=0
DO_HOOK_REFRESH=false

while [ "${COMMAND:0:1}" = "-" ] ; do
    case "$COMMAND" in
        -f )KEEP_GOING="||:"
            ;;
        -z)
            refresh_all_hooks
            exit 0;
            ;;
        --set-push-urls)
            shift
            PUSH_USER="$1"
            if [ -n "${PUSH_USER}" ] ; then
                PUSH_USER="${PUSH_USER}@"
            fi
            set_push_urls "$PUSH_USER"
            exit 0;
            ;;
        -*)
            echo "option: $COMMAND not supported" 1>&2
            exit 1
    esac
    shift
    COMMAND="$1"
done

shift

case "$COMMAND" in
    branch)
        do_git_cmd "${COMMAND}" "$@"
        ;;
    checkout)
        do_checkout "$@"
        ;;
    clone)
        do_init_modules && refresh_all_hooks
        ;;
    fetch)
        (git fetch "$@" && git submodule foreach git fetch "$@" ) && git submodule update --progress

        ;;
    gc)
         (git gc "$@" && git submodule foreach git gc "$@" )
        ;;
    grep)
        KEEP_GOING="||:"
        do_git_cmd "${COMMAND}" "$@"
        ;;
    pull)
        git pull "$@" && git submodule update --progress && refresh_all_hooks
        ;;
    push)
        git submodule foreach git push "$@"
        if [ "$?" = "0" ] ; then
            git push "$@"
        fi
        ;;
    reset)
        do_reset
        ;;
    tag)
        do_git_cmd "${COMMAND}" "$@"
        ;;
    "")
        ;;
    *)
        echo "./g does not support command: $COMMAND" 1>&2
        exit 1;
        ;;
esac

exit $?

# vi:set shiftwidth=4 expandtab:

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