#!/bin/bash

#

# texinfo_updateNodes.sh -- This function updates chapter's nodes

# definition using the chapter's menu as reference.

#

# Copyright (C) 2009, 2010, 2011 The CentOS Project

#

# 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 texinfo_updateNodes {

    # Retrive nodes' entries from chapter-menu.texinfo file.

    local NODES=$(cat $MANUAL_CHAPTER_DIR/chapter-menu.${FLAG_BACKEND} \

        | sed -r 's!^\* !!' | sed -r 's!:{1,2}.*$!!g' \

        | egrep -v '^@(end )?menu$' | sed -r 's! !:!g' | sort | uniq)

    # Re-build node structure based on menu information.

    for NODE in $NODES;do

        NODE=$(echo "${NODE}" | sed -r 's!:! !g')

        SECT=$(echo "${NODE}" | cut -d' ' -f2- | sed -r 's! !/!g')

        INCL=$(echo "${NODE}" | sed -r 's! !/!g').${FLAG_BACKEND}

        CIND=$(echo "${NODE}")

        # Create texinfo section file using templates, only if the

        # section file doesn't exist and hasn't been marked for

        # deletion.  Otherwise, when the files have been marked for

        # deletion, they will be created again from texinfo template

        # to working copy and that might create confusion.

        if [[ ! -f ${MANUAL_BASEDIR}/$INCL ]] \

            && [[ $(cli_getRepoStatus ${MANUAL_BASEDIR}/$INCL) != 'D' ]];then

            # Define absolute path to section templates assignment

            # file. This is the file that hold the relation between

            # section template files and repository paths when

            # documentation entries are created.

            local CONFFILE="${MANUAL_TEMPLATE}/${MANUAL_NAME}.conf" 

            # Verify existence of configuration file.

            cli_checkFiles $CONFFILE

            # Retrive configuration lines from configuration file. Be

            # sure no line begining with `#' or space remain in the

            # line. Otherwise, it would be difficult to loop through

            # configuration lines.

            local CONFLINE=''

            local CONFLINES=$(cat ${CONFFILE} \

                | egrep -v '^#' \

                | egrep -v '^[[:space:]]*$' \

                | sed -r 's![[:space:]]*!!g')

            # Initialize both left hand side and right hand side

            # configuration values.

            local CONFLHS=''

            local CONFRHS=''

            # Initialize absolute path to final texinfo template.

            local TEMPLATE=''

            # Define what section template to apply using

            # documentation entry absolute path and values provided by

            # configuration line. Be sure to break the loop in the

            # first match.

            for CONFLINE in $CONFLINES;do

                CONFLHS=$(echo $CONFLINE \

                    | gawk 'BEGIN{FS = "="}; { print $1 }' \

                    | sed -r 's![[:space:]]*!!g')

                CONFRHS=$(echo $CONFLINE \

                    | gawk 'BEGIN{FS = "="}; { print $2 }' \

                    | sed -r 's![[:space:]]*!!g' | sed -r 's!^"(.+)"$!\1!')

                if [[ ${MANUAL_BASEDIR}/${INCL} =~ $CONFRHS ]];then

                    TEMPLATE="${MANUAL_TEMPLATE}/${CONFLHS}"

                    break

                fi

            done

            # Verify existence of texinfo template file. If no

            # template is found, stop script execution with an error

            # message. We cannot continue without it.

            cli_checkFiles $TEMPLATE

            # Create documentation entry using texinfo template as

            # reference.

            svn cp ${TEMPLATE} ${MANUAL_BASEDIR}/$INCL --quiet

            # Expand common translation markers in documentation entry.

            cli_replaceTMarkers "${MANUAL_BASEDIR}/$INCL"

            # Expand `Goals' subsection translation markers in

            # documentation entry.

            sed -i -r "s!=SECT=!${SECT}!g" "${MANUAL_BASEDIR}/$INCL"

            # Expand `See also' subsection translation markers in

            # documentation entry.

            ${FLAG_BACKEND}_makeSeeAlso "${MANUAL_BASEDIR}/$INCL" "$NODE"

        fi

        # Verify existence of chapter-nodes template files. If no

        # chapter-nodes template is found, stop script execution with

        # an error message. We cannot continue without it.

        cli_checkFiles ${MANUAL_TEMPLATE}/${MANUAL_CHAPTER_NAME}/chapter-nodes.${FLAG_BACKEND}

        # Output node information chapter-nodes template file using

        # the current texinfo menu information.

        cat ${MANUAL_TEMPLATE}/${MANUAL_CHAPTER_NAME}/chapter-nodes.${FLAG_BACKEND} \

            | sed -r -e "s!=NODE=!${NODE}!g" -e "s!=SECT=!${SECT}!g" \

                     -e "s!=CIND=!${CIND}!g" -e "s!=INCL=!${INCL}!g"

    # Dump node definitions into document structure.

    done > $MANUAL_CHAPTER_DIR/chapter-nodes.${FLAG_BACKEND}

}