#!/bin/bash

#

# help_deleteEntry.sh -- This function removes a documentation entry

# from documentation directory structure.

#

# 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., 675 Mass Ave, Cambridge, MA 02139, USA.

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function help_deleteEntry {

    # Print separator line.

    cli_printMessage '-' 'AsSeparatorLine'

    local ENTRY_SRC=${ENTRY}

    local ENTRIES=''

    local ENTRY=''

    local ENTRY_DEP=''

    # Initiate list of entries to remove using the entry specified in

    # the command line.

    ENTRIES=${ENTRY_SRC}

    # Verify existence of dependent entries.  Dependent entries are

    # stored inside a directory with the same name of the entry you

    # are trying to remove.

    if [[ -d ${ENTRY_DIR}/${ENTRY_FILE} ]];then

        # Add dependent files to list of entries. 

        ENTRIES="${ENTRIES} $(cli_getFilesList "${ENTRY_DIR}/${ENTRY_FILE}" ".*\.texi")"

        # Add dependent directories to list of entries. Be aware of

        # nested directories.

        for ENTRY in ${ENTRIES};do

            ENTRY_DEP=$(echo $ENTRY | sed -r "s/\.texi$//")

            if [[ -d $ENTRY_DEP ]];then

                ENTRIES="${ENTRIES} ${ENTRY_DEP}"

            fi

        done

    fi

    # Prepare list of entries for action preamble.

    ENTRIES=$(echo ${ENTRIES} | tr ' ' "\n" | sort -r | uniq)

    # Print action preamble.

    cli_printActionPreamble "$ENTRIES" 'doDelete' 'AsResponseLine'

    # Remove documentation entry using Subversion's `delete' command

    # to know when the action took place.  Do not use regular `rm'

    # command here.

    svn del ${ENTRIES} --quiet

    # Verify exit status from subversion command to be sure everything

    # went well. Otherwhise stop script execution.

    if [[ $? -ne 0 ]];then

        cli_printMessage "${FUNCDIRNAM}" 'AsToKnowMoreLine'

    fi

    # Print separator line.

    cli_printMessage '-' 'AsSeparatorLine'

    # Print action message.

    cli_printMessage "Updating menus, nodes and cross-references." 'AsResponseLine'

    # Process list of entries in order to update menus, nodes and

    # cross references. Since we are verifying entry status before

    # remove the we cannot update the information in the same loop we

    # remove files. This would modify some file before be removed and

    # that would stop script execution. Similary, if we do update

    # menus, nodes and cross references before removing files it would

    # be needed to remove farther status verification in order for the

    # script to continue its execution. Thereby, I can't see a

    # different way but removing files first using status verification

    # and later go through entries list again to update menus, nodes

    # and cross references in remaining files.

    for ENTRY in ${ENTRIES};do

        # Update menu and node definitions from manual sections to

        # reflect the changes.

        help_updateMenu "remove-entry"

        help_updateNodes

        # Update cross reference definitions from manual to reflect

        # the changes.

        help_deleteCrossReferences

    done

    # Rebuild output files to propagate recent changes.

    help_updateOutputFiles

}