#!/bin/bash
#
# cli_getRepoStatus.sh -- This function requests the working copy
# using the svn status command and returns the first character in the
# output line, as described in svn help status, for the LOCATION
# specified. Use this function to perform verifications based a
# repository LOCATION status. 
#
# Copyright (C) 2009-2011 Alain Reguera Delgado
# 
# 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 of the
# License, 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.
# 
# ----------------------------------------------------------------------
# $Id$
# ----------------------------------------------------------------------

function cli_getRepoStatus {

    local LOCATION="$1"
    local STATUS=''

    # Define regular expression pattern to retrive first column,
    # returned by subversion status command. This column is one
    # character column as describes `svn help status' command.
    local PATTERN="^( |A|C|D|I|M|R|X|\?|!|~).+$"

    # Verify the file used as source to retrive its status
    # information. We only use regular files or directories inside the
    # working copy.
    cli_checkFiles "$LOCATION" 'fd'
    cli_checkFiles "$LOCATION" 'isInWorkingCopy'

    # Use subversion `status' command to retrive the first character
    # in the output.
    STATUS="$(svn status "$LOCATION" --quiet | sed -r "s/${PATTER}/\1/")"

    # Sanitate status output.
    if [[ "$STATUS" == '' ]];then
        # If status is empty, there is no output error and we assume
        # file being checked doesn't have changes either, so redefine
        # status as `no modification'.
        STATUS=' '
    elif [[ ! "$STATUS" =~ "$PATTERN" ]];then
        # If status doesn't match the regular expression pattern
        # defined previusly, we assume file being checked is not under
        # version control, so we redefine status as `item is not under
        # version control'.
        STATUS='?'
    fi

    # Outout status information.
    echo -n "$STATUS"

}