#!/bin/bash

#

# texinfo.sh -- This function initilializes Texinfo documentation

# backend used by `centos-art.sh' script to produce and maintain

# documentation manuals written in Texinfo format, inside the working

# copy of The CentOS Artwork Repository.

#

# 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 {

    # Verify documentation entry to be sure it coincides with

    # Texinfo's supported structuring (e.g., texinfo-4.8 doesn't

    # support structuring through parts, but chapters and sections

    # only).

    if [[ $MANUAL_PART_NAME != '' ]];then

        cli_printMessage "The documentation entry provided isn't supported." --as-error-line

    fi

    # Define file extension used by source files inside manuals.

    MANUAL_EXTENSION="${MANUAL_BACKEND}"

    # Define absolute path to template directory. This is the place

    # where we store locale directories (e.g., en_US, es_ES, etc.)

    # used to build manuals in texinfo format.

    MANUAL_TEMPLATE=${CLI_FUNCDIR}/${CLI_FUNCDIRNAM}/$(cli_getRepoName \

        ${MANUAL_BACKEND} -d)/Templates

    # Define absolute path to language-specific template directory.

    # This is the place where we store locale-specific files used to

    # build manuals in texinfo format.

    MANUAL_TEMPLATE_L10N=${MANUAL_TEMPLATE}/${MANUAL_L10N}

    # Verify absolute path to language-speicific template directory.

    # If it doesn't exist, use English language as default location to

    # retrive template files.

    if [[ ! -d $MANUAL_TEMPLATE_L10N ]];then

        MANUAL_TEMPLATE_L10N=${MANUAL_TEMPLATE}/en_US

    fi

    # Initialize document structure for new manuals.

    texinfo_createStructure

    # Define documentation entry default values. To build the

    # documentation entry, we combine the manual's name, part, chapter

    # and section information retrived from the command-line.

    if [[ $MANUAL_CHAPTER_NAME == '' ]];then

        # When chapter option is not provided, discard the section

        # name and define documentation entry based on manual's main

        # definition file.

        MANUAL_ENTRY="${MANUAL_BASEFILE}.${MANUAL_EXTENSION}"

    elif [[ $MANUAL_CHAPTER_NAME != '' ]] && [[ $MANUAL_SECTION_NAME == '' ]];then

        # When chapter option is provided whith out a section name,

        # verify chapter's directory inside the manual,

        texinfo_createChapter

        # and define documentation entry based on chapter's main

        # definition file.

        MANUAL_ENTRY="${MANUAL_BASEDIR_L10N}/${MANUAL_CHAPTER_NAME}/chapter.${MANUAL_EXTENSION}"

    elif [[ $MANUAL_CHAPTER_NAME != '' ]] && [[ $MANUAL_SECTION_NAME != '' ]];then

        # When both the chapter option and non-option arguments are

        # provided, define documentation entries based on manual,

        # chapter and non-option arguments.

        MANUAL_ENTRY="$(texinfo_getEntry "$MANUAL_SECTION_NAME")"

    else

        cli_printMessage "`gettext "The parameters you provided are not supported."`" --as-error-line

    fi

    # Execute action names. Notice that we've separated execution of

    # action names in order to control and save differences among

    # them.

    if [[ $ACTIONNAM == "" ]];then

        # When no action name is provided to `centos-art.sh' script,

        # read manual's output in info format in order to provide a

        # way for people to get oriented about The CentOS Artwork

        # Repository and its automation tool, the centos-art.sh

        # script. Be sure the manual's output file does exist and

        # terminate the script execution once the reading is done.

        # Update manual's output files.

        texinfo_updateOutputFiles

        # Read manual's Top node from its info output file.

        info --node="Top" --file="${MANUAL_BASEFILE}.info.bz2"

    elif [[ $ACTIONNAM =~ "^(copy|rename)Entry$" ]];then

        # Both `--copy' and `--rename' actions interpret non-option

        # arguments passed to `centos-art.sh' script in a special way.

        # In this configuration, only two non-option arguments are

        # processed in the first loop of their interpretation.

        texinfo_${ACTIONNAM}

        # Rebuild output files to propagate recent changes, if any.

        texinfo_updateOutputFiles

        # Break interpretation of non-option arguments to prevent the

        # second and further non-option arguments from being

        # considered as source location.

        break

    elif [[ $ACTIONNAM =~ "^(search(Node|Index)|updateOutputFiles)$" ]];then

        # The two final actions of help functionality are precisely to

        # update manual output files and commit all changes from

        # working copy to central repository. In this situation, when

        # the `--update-output' option is provided to `centos-art.sh',

        # don't duplicate the rendition of manual output files (e.g.,

        # one for the option and other for help's normal execution

        # flow) nor commit any change form working copy to central

        # repository (e.g., output files aren't under version

        # control).

        texinfo_${ACTIONNAM}

    else

        # Execute action names as part of normal help's execution

        # flow, without any extra modification.

        texinfo_${ACTIONNAM}

        # Rebuild output files to propagate recent changes, if any.

        texinfo_updateOutputFiles

    fi

}