#!/bin/bash

print_usage()
{
    echo "$(basename $0) -- gives status of version control subrepositories."
    echo "Usage: $(basename $0) [OPTIONS...]"
    echo "Options:"
    echo "  -h   display this help and exit"
    echo "  -m   display only subrepositories with local modifications"
}

while getopts "hm" flag ;do
    case ${flag} in
	h)
	    print_usage
            exit 0
	    ;;
	m)
	    DISPLAY_LOCAL_MODS_ONLY=1
	    ;;
	?)
	    echo "${PROG_NAME}: Invalid option: ${OPTARG}."
	    echo "Try \`${PROG_NAME} --help' for more information."
	    exit 1
	    ;;
    esac
done
shift `expr "${OPTIND}" - 1`

# `$#' now represents the number of arguments after the options.
# `$1' is the first argument, etc.

if [ ! -f .hgsub ]; then
    echo "No Mercurial subrepositories found"
    exit 1
fi

# Read lines from .hgsub
while read sub; do
    # Remove CR (DOS)
    sub="${sub//$'\r'/}"

    if [ "${sub}" != "" ]; then
        # Get subrepository URL
        src="${sub//*= /}"

        # Replace using subpaths extension content
        src=${src/${sp_src}/${sp_dst}}

        # Get subrepository local alias or label
        dest="${sub// =*}"

        # Get project ID (example: S0289)
        id=$(echo ${sub} | sed "s/.*\(S[0-9][0-9][0-9][0-9]\).*/\1/")

        # Get revision of subrepository (remove CR from .hgsubstate)
        rev=$(cat .hgsubstate | tr -d '\r' | grep "${id}" | sed "s/ .*//")

        if [ -n "${debug}" ]; then
            echo "repo: ${src}"
            echo "  id:     ${id}"
            echo "  rev:    ${rev}"
            echo "  src:    ${src}"
            echo "  dest:   ${dest}"
        fi

        pushd "${dest}" 1> /dev/null

        if vs | grep -q "nothing to commit"; then
            LOCAL_MODS=0
        else
            LOCAL_MODS=1
        fi

	if [ "x${DISPLAY_LOCAL_MODS_ONLY}" != "x1" ]; then
            # Force to display all subrepositories if -m is not specified
            LOCAL_MODS=1
        fi

	if [ "x${LOCAL_MODS}" = "x1" ]; then
            echo "============================"
            echo "subrepo: ${dest}"
            vs
        fi

        popd 1> /dev/null
    fi
done < .hgsub