tdf#105204: ShellCheck nitpicks for g

Change-Id: I1814bc65c62af1a92a090127f1cfda8ad228936d
SC2002: Useless cat.
SC2045: Iterating over ls output is fragile.
SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.
SC2006: Use $(..) instead of legacy `..`
Reviewed-on: https://gerrit.libreoffice.org/36571
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>
diff --git a/g b/g
index 3d2a37d..38e9db9 100755
--- a/g
+++ b/g
@@ -12,7 +12,7 @@ SUBMODULES_ALL="dictionaries helpcontent2 translations"
pushd $(dirname $0) > /dev/null
if [ -f config_host.mk ] ; then
    # we are in the BUILDDIR
    SRC_ROOT=$(cat config_host.mk | grep -a SRC_ROOT | sed -e "s/.*=//")
    SRC_ROOT=$(< config_host.mk grep -a SRC_ROOT | sed -e "s/.*=//")
else
    SRC_ROOT=$(pwd)
fi
@@ -37,35 +37,35 @@ local hook_name

    if [ -d ${repo?}/.git ] ; then
        # use core's hook by default
	for hook_name in $(ls -1 "${COREDIR?}/.git-hooks") ; do
            hook="${repo?}/.git/hooks/${hook_name?}"
            if [ ! -e "${hook?}" -o -L "${hook?}" ] ; then
	for hook_name in ${COREDIR?}/.git-hooks/* ; do
            hook="${repo?}/.git/hooks/${hook_name##*/}"
            if [ ! -e "${hook?}" ] || [ -L "${hook?}" ] ; then
		rm -f "${hook?}"
		ln -sf "${COREDIR?}/.git-hooks/${hook_name?}" "${hook?}"
		ln -sf "${hook_name}" "${hook?}"
            fi
	done
        # override if need be by the submodules' own hooks
	for hook_name in $(ls -1 "${COREDIR?}/${repo?}/.git-hooks" 2>/dev/null) ; do
            hook="${repo?}/.git/hooks/${hook_name?}"
            if [ ! -e "${hook?}" -o -L "${hook?}" ] ; then
	for hook_name in ${COREDIR?}/${repo?}/.git-hooks/* ; do
            hook="${repo?}/.git/hooks/${hook_name##*/}"
            if [ ! -e "${hook?}" ] || [ -L "${hook?}" ] ; then
		rm -f "${hook?}"
		ln -sf "${COREDIR?}/${repo?}/.git-hooks/${hook_name?}" "${hook?}"
		ln -sf "${hook_name}" "${hook?}"
	    fi
	done
    elif [ -d .git/modules/${repo}/hooks ] ; then
	for hook_name in $(ls -1 "${COREDIR?}/.git-hooks") ; do
            hook=".git/modules/${repo?}/hooks/${hook_name?}"
            if [ ! -e "${hook?}" -o -L "${hook?}" ] ; then
	for hook_name in ${COREDIR?}/.git-hooks/* ; do
            hook=".git/modules/${repo?}/hooks/${hook_name##*/}"
            if [ ! -e "${hook?}" ] || [ -L "${hook?}" ] ; then
		rm -f "${hook?}"
		ln -sf "${COREDIR?}/.git-hooks/${hook_name?}" "${hook?}"
		ln -sf "${hook_name}" "${hook?}"
            fi
	done
        # override if need be by the submodules' own hooks
	for hook_name in $(ls -1 "${COREDIR?}/${repo?}/.git-hooks" 2>/dev/null) ; do
            hook=".git/modules/${repo?}/hooks/${hook_name?}"
            if [ ! -e "${hook?}" -o -L "${hook?}" ] ; then
	for hook_name in ${COREDIR?}/${repo?}/.git-hooks/* ; do
            hook=".git/modules/${repo?}/hooks/${hook_name##*/}"
            if [ ! -e "${hook?}" ] || [ -L "${hook?}" ] ; then
		rm -f "${hook?}"
		ln -sf "${COREDIR?}/${repo?}/.git-hooks/${hook_name?}" "${hook?}"
		ln -sf "${hook_name}" "${hook?}"
	    fi
	done
    fi
@@ -79,11 +79,11 @@ local hook_name
local hook

    pushd "${COREDIR?}" > /dev/null
    for hook_name in $(ls -1 "${COREDIR?}/.git-hooks") ; do
        hook=".git/hooks/${hook_name?}"
        if [ ! -e "${hook?}" -o -L "${hook?}" ] ; then
    for hook_name in ${COREDIR?}/.git-hooks/* ; do
        hook=".git/hooks/${hook_name##*/}"
        if [ ! -e "${hook?}" ] || [ -L "${hook?}" ] ; then
            rm -f "${hook?}"
            ln -sf "${COREDIR?}/.git-hooks/${hook_name?}" "${hook?}"
            ln -sf "${hook_name}" "${hook?}"
        fi
    done

@@ -137,7 +137,7 @@ SUBMODULES_ACTIVE=""
local repo

    for repo in ${SUBMODULES_ALL?} ; do
	if [ -d ${repo?}/.git -o -f ${repo?}/.git ] ; then
	if [ -d ${repo?}/.git ] || [ -f ${repo?}/.git ] ; then
	    SUBMODULES_ACTIVE="${repo?} ${SUBMODULES_ACTIVE?}"
	fi
    done
@@ -147,7 +147,7 @@ get_configured_submodules()
{
    SUBMODULES_CONFIGURED=""
    if [ -f config_host.mk ] ; then
	SUBMODULES_CONFIGURED=$(cat config_host.mk | grep -a GIT_NEEDED_SUBMODULES | sed -e "s/.*=//")
	SUBMODULES_CONFIGURED=$(< config_host.mk grep -a GIT_NEEDED_SUBMODULES | sed -e "s/.*=//")
    else
	# if we need the configured submoduel before the configuration is done. we assumed you want them all
	SUBMODULES_CONFIGURED=${SUBMODULES_ALL?}
@@ -158,11 +158,11 @@ get_git_reference()
{
    REFERENCED_GIT=""
    if [ -f config_host.mk ]; then
	REFERENCED_GIT=$(cat config_host.mk | grep -a GIT_REFERENCE_SRC | sed -e "s/.*=//")
	REFERENCED_GIT=$(< config_host.mk grep -a GIT_REFERENCE_SRC | sed -e "s/.*=//")
    fi
    LINKED_GIT=""
    if [ -f config_host.mk ]; then
	LINKED_GIT=$(cat config_host.mk | grep -a GIT_LINK_SRC | sed -e "s/.*=//")
	LINKED_GIT=$(< config_host.mk grep -a GIT_LINK_SRC | sed -e "s/.*=//")
    fi
}

@@ -287,7 +287,7 @@ if [ "$#" -eq "0" ] ; then
    usage
fi

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