Blame Automation/Modules/Prepare/prepare_setRenderEnvironment.sh

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#!/bin/bash
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######################################################################
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#
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#   prepare_setRenderEnvironment.sh -- This function provides a secure
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#   interface to render content outside the render module. You can use
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#   this function to call the render module from other modules,
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#   safely. 
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#
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#   This function builds a list of all available configuration files
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#   in locations passed as argument and reduces the list by applying
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#   regular expression patterns to each file in the list. Only files
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#   that match the regular expression pattern will remain in the final
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#   list. The regular expression patterns are applied to file's
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#   content, generally to find out if it has an specific option, value
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#   or combination of both inside.  Later, the resultant list of
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#   configuration files is passed to render module for processing.
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#
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#   This function verifies the search path provided to render module
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#   to grant it is inside the repository before passing it to render
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#   module for processing.
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#
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#   Written by:
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#   * Alain Reguera Delgado <al@centos.org.cu>, 2009-2013
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#
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# Copyright (C) 2009-2013 The CentOS Project
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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######################################################################
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function prepare_setRenderEnvironment {
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    OPTIND=1
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    while getopts "o:,v:" OPTION ${@}; do
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        case "${OPTION}" in
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            o )
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                # Define the name of the option you want to look
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                # configuration files for.
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                local OPTION_NAME=${OPTARG}
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                if [[ -z ${OPTION_NAME} ]];then
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                    tcar_printMessage "`gettext "The option name cannot be empty."`" --as-error-line
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                fi
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                ;;
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            v )
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                # Define the value of the option you want to look
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                # configuration files for.
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                local OPTION_VALUE=${OPTARG}
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                if [[ -z ${OPTION_VALUE} ]];then
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                    tcar_printMessage "`gettext "The option value cannot be empty."`" --as-error-line
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                fi
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                ;;
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        esac
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    done
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    # Clean up positional parameters to reflect the fact that options
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    # have been processed already.
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    shift $(( ${OPTIND} - 1 ))
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    # Now that option arguments have been removed from positional
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    # parameter, verify all other remaining arguments (the search
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    # paths) do exist. They are required to search.
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    if [[ -z ${@} ]];then
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        tcar_printMessage "`gettext "The search path cannot be empty."`" --as-error-line
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    fi
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    # Define array variable to store configuration file paths.
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    local -a CONFIGURATION
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    # Define final filter regular expression. This regular expression
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    # must match the option = "value" format we are using inside
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    # configuration files.
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    local CONFIGURATION_PATTERN="^${OPTION_NAME}[[:space:]]*=[[:space:]]*\"${OPTION_VALUE}\"$"
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    for DIRECTORY in ${@};do
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        # Clean-up the search path. This location must point a
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        # directory inside the repository. References to directories
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        # outside the repository are not supported.
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        DIRECTORY=$(tcar_checkRepoDirSource ${DIRECTORY})
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        # Verify the search path. It must exist and being a directory.
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        tcar_checkFiles -ed ${DIRECTORY}
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        # Define the list of configuration files the render module
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        # will use as reference to produce documentation. At this
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        # point it is very difficult that DIRECTORY doesn't exist or
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        # be outside the repository directory structure.
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        CONFIGURATION[++((${#CONFIGURATION[*]}))]=$(tcar_getFilesList \
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            ${DIRECTORY} --pattern='.+\.conf$' --type='f' \
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            | xargs egrep ${CONFIGURATION_PATTERN} | cut -d: -f1 | sort | uniq)
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    done
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    # Process the list of configuration files using the render module.
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    tcar_setModuleEnvironment render ${CONFIGURATION[*]}
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}