#!/bin/bash

#

# help.sh -- This function standardizes the way documentation is

# produced and maintain inside the working copy of 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 help {

    local ACTIONNAM=''

    local ACTIONVAL=''

    # Initialize the search option. The search option (`--search')

    # specifies the pattern used inside info files when an index

    # search is perform.

    FLAG_SEARCH=""

    # Initialize the backend option. The backend option (`--backend')

    # specifies the backend used to manipulate the repository

    # documentation manual.

    FLAG_BACKEND="texinfo"

    # Interpret option arguments passed through the command-line.

    ${FUNCNAM}_getOptions

    # Define manuals base directory. This is the place where

    # documentation manuals base directory structures are stored and

    # organized in.

    MANUAL_BASEDIR="$(cli_getRepoTLDir)/Manuals/$(cli_getRepoName ${FLAG_BACKEND} -d)"

    # Define file name (without extension) for documentation manual.

    MANUAL_NAME=repository

    # Define base name for documentation manual files (without

    # extension). This is the main file name used to build output

    # related files (.info, .pdf, .xml, etc.).

    MANUAL_BASEFILE="${MANUAL_BASEDIR}/${MANUAL_NAME}"

    # Define function configuration directory. The function

    # configuration directory is used to store functionality's related

    # files.

    MANUAL_TEMPLATE=${FUNCDIR}/${FUNCDIRNAM}/Templates

    # Redefine positional parameters using ARGUMENTS. At this point,

    # option arguments have been removed from ARGUMENTS variable and

    # only non-option arguments remain in it. 

    eval set -- "$ARGUMENTS"

    # Verify and initialize backend functions.  There is no need to

    # load all backend-specific functions when we can use just one

    # backend among many. Keep the cli_getFunctions function calling

    # after all variables and arguments definitions.

    if [[ ${FLAG_BACKEND} =~ '^texinfo$' ]];then

        cli_getFunctions "${FUNCDIR}/${FUNCDIRNAM}" 'texinfo'

    elif [[ ${FLAG_BACKEND} =~ '^docbook$' ]];then

        cli_getFunctions "${FUNCDIR}/${FUNCDIRNAM}" 'docbook'

    else

        cli_printMessage "`gettext "The backend provided is not supported."`" --as-error-line

    fi

    # Execute backend functionalities. Notice that there are

    # functionalities that need more than one action value in order to

    # be executed (e.g.,  copying, and renaming), functionalities

    # that need just one action value to be executed (e.g.,

    # documentation reading and edition) and functionalities that

    # don't need action value at all (e.g., searching, reading and

    # updating output files). This way, the execution of backend

    # functionalities is splitted here.

    if [[ $ACTIONNAM =~ "${FLAG_BACKEND}_(copy|rename|delete)Entry" ]];then

        # Define directories where documentation entries are stored

        # in.  Since more than one action value might be affected

        # here, more than one directory might be considered as chapter

        # directory, as well.

        MANUAL_CHAPTER_DIR=$(${FLAG_BACKEND}_getChapterDir "$@")

        # Syncronize changes between repository and working copy. At

        # this point, changes in the repository are merged in the

        # working copy and changes in the working copy committed up to

        # repository.

        cli_syncroRepoChanges ${MANUAL_CHAPTER_DIR}

        # Execute backend action names that may need to use more than

        # one action value.

        ${ACTIONNAM} $@

        # Commit changes from working copy to central repository only.

        # At this point, changes in the repository are not merged in

        # the working copy, but chages in the working copy do are

        # committed up to repository.

        cli_commitRepoChanges ${MANUAL_CHAPTER_DIR}

    elif [[ $ACTIONNAM =~ "${FLAG_BACKEND}_(search(Index|Node)|updateOutputFiles)" ]];then

        # Bring changes from the repository to the working copy.

        cli_updateRepoChanges ${MANUAL_BASEDIR}

        # Execute backend action names that might not need any action

        # value as reference to do their work.

        $ACTIONNAM $@

        # Backend action names that don't need to use any action value

        # as reference to do their work are of one-pass only. They are

        # executed and then the script execution is finished.

        exit

    else

        # Execute backend action names that use one action value, only.

        for ACTIONVAL in $@;do

            # Define directories where documentation entries are

            # stored in.  Since just one action value is

            # affected here, just one directory is considered as

            # chapter directory, as well.

            MANUAL_CHAPTER_DIR=$(${FLAG_BACKEND}_getChapterDir "${ACTIONVAL}")

            # Define chapter name for documentation entry we're working with.

            MANUAL_CHAPTER_NAME=$(basename "$MANUAL_CHAPTER_DIR")

            # Define documentation entry.

            MANUAL_ENTRY=$(${FLAG_BACKEND}_getEntry $ACTIONVAL)

            # Syncronize changes between repository and working copy.

            # At this point, changes in the repository are merged in

            # the working copy and changes in the working copy

            # committed up to repository.

            cli_syncroRepoChanges ${MANUAL_CHAPTER_DIR}

            # Execute backend action names that may need to use more

            # than one action value.

            $ACTIONNAM 

            # Commit changes from working copy to central repository

            # only.  At this point, changes in the repository are not

            # merged in the working copy, but chages in the working

            # copy do are committed up to repository.

            cli_commitRepoChanges ${MANUAL_CHAPTER_DIR}

        done

    fi

    # Rebuild output files to propagate recent changes.

    ${FLAG_BACKEND}_updateOutputFiles

    # Perform language-specific actions when the current language is

    # other but English language.

    if [[ ! $(cli_getCurrentLocale) =~ '^en' ]];then

        # Update translatable strings in related portable objects.

        eval ${CLI_BASEDIR}/${CLI_PROGRAM}.sh locale --update ${MANUAL_BASEFILE}.xhtml --dont-commit-changes

        # Update translatable strings in related portable objects.

        eval ${CLI_BASEDIR}/${CLI_PROGRAM}.sh locale --edit ${MANUAL_BASEFILE}.xhtml

        # Print separator.

        cli_printMessage '-' --as-separator-line

        # Print action message.

        cli_printMessage "${MANUAL_BASEFILE}.xhtml/$(cli_getCurrentLocale)" '--as-updating-line'

        # Render translated versions of the XHTML output files,

        # supressing the rendition output.

        eval ${CLI_BASEDIR}/${CLI_PROGRAM}.sh render ${MANUAL_BASEFILE}.xhtml --dont-commit-changes --quiet

    fi

}