#!/bin/bash

#

# render_getIdentityDefs.sh -- This function provides shared variables

# re-definition for all rendition actions inside centos-art.sh script.

#

# 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 render_getIdentityDefs {

    # Define the translation file absolute path. Only if we have a

    # .png.sh extension at file's end we can consider that file as a

    # translation file.  Otherwise there is not translation file.

    if [[ ${FILE} =~ "\.${EXTENSION}$" ]];then

        TRANSLATION=${FILE}

    else

        TRANSLATION=`gettext "None"`

    fi

    # Check translation file existence. This may seem unnecessary

    # because we already built the file list using existent files.

    # But what happen if any of the files already loaded are removed

    # after being loaded? well, just skip it.

    if [[ "$TRANSLATION" == `gettext "None"` ]];then

        cli_printMessage "`gettext "None"`" "AsTranslationLine"

    else

        cli_checkFiles "$TRANSLATION" 'fh'

        cli_printMessage "$TRANSLATION" 'AsTranslationLine'

    fi

    # Define the design template absolute path. This definition is

    # done by interpreting the matching list and translation path

    # information.  This defintion needs to be coherent with those

    # defined in render_getFilesList function.

    if [[ "${MATCHINGLIST}" != "" ]] \

        && [[ "${TRANSLATIONPATH}" == "" ]];then

        # Remove the template (`Tpl/') string from FILE for those

        # images based on design templates. This avoids the creation

        # of an extra `Tpl' directory under Img. We want to save

        # primary PNG file structure directly under Img/ not Img/Tpl/.

        FILE=$(echo ${FILE} | sed -r "s!^${SVG}/!!")

        # In this case just one primary image is rendered.

        # Template points to the value passed in the template

        # argument.

        TEMPLATE=${MATCHINGLIST}

    elif [[ "${MATCHINGLIST}" == "" ]] \

        && [[ "${TRANSLATIONPATH}" == "" ]];then

        # Remove the template (`Tpl/') string from FILE for those

        # images based on design templates. This avoids the creation

        # of an extra `Tpl' directory under Img. We want to save

        # primary PNG file structure directly under Img/ not Img/Tpl/.

        FILE=$(echo ${FILE} | sed -r "s!^${SVG}/!!")

        # In this case one primary image is rendered for each

        # design template. Template absolute path points to a

        # design template (see LOCATION's definition).

        TEMPLATE=${FILE}

    elif [[ "${MATCHINGLIST}" == "" ]] \

        && [[ "${TRANSLATIONPATH}" != "" ]];then

        # In this case translation files are applied to design

        # templates with the same name (without extension). One

        # primary image is rendered for each translation file

        # matching.  Template and translation files use the same path

        # and name relative to their PARENTDIR. Translations use

        # .png.sh extension and templates .svg extension.

        TEMPLATE=$(echo ${FILE} | sed -r "s!.*/${PARENTDIR}/(.*)!\1!" \

            | sed -r "s/\.${EXTENSION}$/.svg/")

    elif [[ "${MATCHINGLIST}" != "" ]] \

        && [[ "${TRANSLATIONPATH}" != "" ]];then

        # Create a template and translation matching list.  With this

        # configuration we can optimize the rendition process for

        # artworks like Anaconda progress slides and installation

        # media, where many translation files apply one unique design

        # template file.

        #

        # Previous to this feature, there was one (repeated) design

        # template for each design holding the same design in all

        # cases, basically a raw copy. This structure is very hard to

        # maintain so it was reduced and optimized as we described

        # above.

        #

        # The idea is to create a link and customizable relation

        # between translation files and design template files in

        # pre-rendition configuration scripts and then interpret it

        # here.

        #

        # This way we pretend to eliminate duplicated design templates

        # saying something like translation 1.png.sh, 2.png.sh,

        # 3.png.sh, 4.png.sh, and 5.png.sh apply to the single design

        # template A.svg.  Or, 1.png.sh, 3.png.sh, 4.png.sh to A.svg

        # and 2.png.sh and 5.png.sh to B.svg.

        #

        # Possible configuration 1: In this first case,

        # translation files and design templates share a common

        # portion of the path.  Sometimes, we call this common

        # portion of path the ``bond path''. This configuration is

        # strictly used under the following situations: 

        #

        #  1. There are too many translation files to apply to a

        #  single design template. This is the case of Brands

        #  artworks (see: trunk/Identity/Brands) rendition, where it

        #  is very difficult to maintain the relation list of design

        #  templates and translation files. E.g.:

        #

        #  bond/path/template.svg: \

        #     bond/path/translation1.png.sh \

        #     bond/path/translation2.png.sh

        #

        #  2. Translation files are under a directory with the same

        #  name of that used in the design template. All translation

        #  files inside this directory will be applied to the single

        #  design template that has the same name of the directory

        #  containing the translation files. E.g.:

        #

        #  bond/path/green.svg: \

        #     bond/path/green/translation1.png.sh \

        #     bond/path/green/translation2.png.sh

        #

        BOND=$(echo $TRANSLATION \

            | sed -r "s/^.*\/$PARENTDIR\/(.+)\/.*\.${EXTENSION}$/\1/")

        # If there is no template at this point, start reducing the

        # bond path and try to use the result as template.  This is

        # needed in those cases where you have a directory structure

        # with various levels of translations inside it and want to

        # apply the last available design template that match to all

        # translation files in the directory structure.

        if [[ ! -f "$SVG/${BOND}.svg" ]];then

            until [[ -f "$SVG/${BOND}.svg" ]] ;do

                [[ $BOND =~ '^(\.|/)$' ]] && break

                BOND=$(dirname $BOND)

            done

        fi

        # Possible configuration 2: If no template is found using the

        # previous bond paths reduction, then lets look using design

        # template and translation file base name bond only.  Use this

        # configuration as much as possible.  Note that it is much

        # more flexible than possible configuration 1.

        #

        # In this configuration, the pre-rendition configuration takes

        # the following form:

        #

        #  template.svg: \

        #     translation1.png.sh \

        #     translation2.png.sh

        #

        if [[ ! -f "$SVG/${BOND}.svg" ]];then

            BOND=$(basename $TRANSLATION)

        fi

        # Possible configuration 2.1: If not design template was found

        # with the .svg extension, lets try design template without

        # extension. This configuration is useful to render plain text

        # files that doesn't use an extension (e.g., see inside

        # `trunk/Identity/Release' directory structure).

        #

        #  template: \

        #     translation1.png.sh \

        #     translation2.png.sh

        #

        if [[ ! -f "$SVG/${BOND}.svg" ]] \

            && [[ ! -f $SVG/{$BOND} ]];then

            BOND=$(basename $TRANSLATION)

        fi

        # Define design template applying bond filtering.

        TEMPLATE=$(echo "${MATCHINGLIST}" \

            | egrep "$BOND" \

            | cut -d: -f1 \

            | sort )

        # Sometimes one BOND pattern can match more than one design

        # template (i.e. 2c-tm pattern match in: 2c-tm, 2c-tmd,

        # 2c-tmdr).  It makes no sence to apply one translation file

        # to many differnt design templates at the same time.  This

        # way we need to reduce the design templates found to just

        # one, the one matching the BOND translation path exactly,

        # without .png.sh extension.

        if [[ $(echo "$TEMPLATE" | wc -l ) -gt 1 ]];then

            # Remove `.png.sh' extension from BOND. This is required

            # in order to build the BOND design template correctly.

            BOND=$(echo $BOND | sed -r "s/\.${EXTENSION}$//")

            # Reduce template designs found to match BOND design

            # template. Take into account design templates extensions.

            TEMPLATE=$(echo "$TEMPLATE" \

                | egrep "${BOND}(\.${EXTENSION})?$")

        fi

        # Sometimes we need to apply all translation files to a single

        # design template.  At this point, if there is no design

        # template available yet, look inside matching list and use

        # its value as design template for all translation files.

        if [[ "$TEMPLATE" == '' ]] \

            && [[ "$MATCHINGLIST" =~ '^[[:alnum:][:digit:][:punct:]]+(\.svg|\.html|\.htm)?$' ]];then

            TEMPLATE="$MATCHINGLIST"

        fi

        # If there is no template found at this point, we need to

        # prevent an empty template from being used. It is a missing

        # assignment definition in the pre-rendition script surely.

        if [[ "$TEMPLATE" == '' ]];then

            cli_printMessage "`eval_gettext "There is no design template defined for \\\`\\\${FILE}'."`" 'AsErrorLine'

            cli_printMessage "$(caller)" "AsToKnowMoreLine"

        fi

    fi

    # Remove any release number from design template's path.  Release

    # directories are used under Translations structure only.

    # Removing release numbers from design template path makes

    # possible to match many release-specific translations to the same

    # design template. There is no need to duplicate the release

    # structure inside design template structure.

    TEMPLATE=$(echo $TEMPLATE | sed -r "s!^$(cli_getPathComponent '--release-pattern')/!!")

    # Remove any language from design template's path. Language

    # code directories are used under Translation structure only.

    # Removing language code directories from design template path

    # makes possible to match many language translations to the

    # same design templates. There is no need to duplicate

    # language code directories inside design template structure.

    if [[ $TEMPLATE =~ '^[[:alpha:]]{2}(_[[:alpha:]]{2}){,1}/' ]];then

        # It seems like the first directory referes to a language

        # code. At this point we check if that value is a valid

        # language code. 

        if [[ "$(cli_getLangCodes $(echo $TEMPLATE | cut -d/ -f1))" != '' ]];then

            # The value is a valid language code. Remove it from path

            # so design template path can be built correctly.

            TEMPLATE=$(echo $TEMPLATE | sed "s!$(echo $TEMPLATE | cut -d/ -f1)/!!")

         fi

    fi

    # Redefine design template using absolute path.

    if [[ -f $SVG/$(basename $TEMPLATE) ]];then

        # Generally, template files are stored one level inside

        # Tpl/ directory.

        TEMPLATE=$SVG/$(basename $TEMPLATE)

    else

        # Others, template designs may be stored some levels inside

        # the template structure. At this point, we look deeper inside

        # template's directory structure and redefine template path.

        # Avoid using duplicated names inside template directory

        # structure. If there are duplicate names, the first one in

        # the list is used and the rest is discarded.

        TEMPLATE=$(find $SVG -regextype posix-egrep -regex \

            ".*/${TEMPLATE}" | sort | head -n 1)

    fi

    # Check existence of TEMPLATE file. If design template doesn't

    # exist we cannot render it; in such case, stop working for it and

    # try the next one in the list.

    cli_checkFiles "$TEMPLATE"  'f'

    cli_printMessage "$TEMPLATE" 'AsDesignLine'

    # Get relative path to file. The path string (stored in FILE) has

    # two parts: 1. the variable path and 2. the common path.  The

    # variable path is before the common point in the path string. The

    # common path is after the common point in the path string. The

    # common point is the name of the parent directory (stored in

    # PARENTDIR).

    #

    # trunk/Script/Bas.../Config/Firstboot/3/splash-small.png.sh

    # -------------------------^| the     |^------------^

    # variable path             | common  |    common path

    # -------------------------v| point   |    v------------v

    # trunk/Identity/Themes/M.../Firstboot/Img/3/splash-small.png

    #

    # What we do here is remove the varibale path, the common point,

    # and the file extension parts in the string holding the path

    # retrived from translations structure. Then we use the common

    # path as relative path to the image file.

    #

    # The `.sh' file extension is removed from the common path.

    # Instead we use the previous extension, defined in the

    # translation files, as file extension. For example, if the

    # translation file is file.png.sh, the final file would be

    # file.png. Likewise, if the translation file is file.txt.sh, the

    # final file would be file.txt.

    #

    # When we render using renderImage function, the structure of

    # files under Img/ directory will be the same of that used after

    # the common point in its related Translations or Template

    # directory depending in which one was taken as reference when

    # LOCATION variable was defined. 

    FILE=$(echo ${FILE} \

        | sed -r "s!.*${PARENTDIR}/!!" \

        | sed -r "s/\.sh$//")

    # Re-define directory absolute path of final output directory. As

    # convenction, when we produce content in English language, we do

    # not add a laguage directory to organize content. However, when

    # we produce content in a language different from English we do

    # use language-specific directory to organize content.

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

        DIRNAME=$IMG/$(dirname ${FILE})

    else

        DIRNAME=$IMG/$(dirname ${FILE})/$(cli_getCurrentLocale)

    fi

    # Check existence of output image directory.

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

        mkdir -p $DIRNAME

    fi

    # Define absolute path to file.

    FILE=$(echo $DIRNAME/$(basename ${FILE}) | sed -r 's!/\./!/!')

    # Define instance name.

    INSTANCE=$(cli_getTemporalFile $TEMPLATE)

    # Remove template instance if it is already present.

    if [[ -a $INSTANCE ]];then

        rm $INSTANCE

    fi

    # Create the design template instance.

    cat $TEMPLATE > $INSTANCE

    # Replace translation markers with appropriate information.

    render_doIdentityTMarkers

}