#!/bin/bash

#

# manual_restoreCrossReferences.sh -- This function looks inside

# texinfo source files, from section level on, and restores any cross

# reference related to a documentation entry. This function is used in

# those cases where documentation entries are created/recreated to

# documentation structure. It is a verification that looks for

# matching documentation entries previously defined as removed by

# manual_removeCrossReferences function. The

# manual_restoreCrossReferences function relays in the removed message

# format produced by manual_removeCrossReferences function, in order

# to return them back into the link format. 

#

# 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 manual_restoreCrossReferences {

    local -a PATTERN

    local -a REPLACE

    # Build the node string using global entry (ENTRY) variable being

    # processed currently.

    local NODE=$(echo "$ENTRY" \

        | cut -d / -f10- \

        | tr '/' ' ' \

        | sed -r "s/(${MANUALS_FILE[7]}|\.texi)$//")

    # Define regular expression patterns to match removed message

    # format produced by message_removeCrossReferences function.

    PATTERN[0]="--- @strong\{`gettext "Removed"`\}\((pxref|xref|ref):(${NODE})\) ---"

    PATTERN[1]="^@comment --- `gettext "Removed"`\((\* ${NODE}:(.*)?:(.*)?)\) ---$"

    # Define replacement string to turn removed message back to cross

    # reference link.

    REPLACE[0]='@\1{\2}'

    REPLACE[1]='\1'

    # Build list of source texinfo files to process, from section

    # level on, and apply replacement string previously defined.  At

    # this point we don't touch chapter related texinfo files (i.e.,

    # repository-menu.texi and repository-nodes.texi) nor section

    # related definition files (i.e., chapter-nodes.texi,

    # chapter-menu.texi, chapter-index.texi) because they are handled

    # by manual_updateChapterMenu, manual_updateChapterNode,

    # manual_updateMenu, and manual_updateNodes functions

    # respectively.  If we don't sanitate messages built from broken

    # cross reference messages, they may become obsolete since the

    # documentation entry, they represent, can be recreated in the

    # future and, at that time, the link wouldn't be broken any more,

    # so we need to be aware of this.

    sed -r -i \

        -e "s!${PATTERN[0]}!${REPLACE[0]}!Mg" \

        -e "s!${PATTERN[1]}!${REPLACE[1]}!g" \

        $(find ${MANUALS_DIR[2]} -mindepth 3 -name '*.texi')

}