Blame Scripts/CentOS-Art/Functions/Render/render_getConfigOption.sh

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#!/bin/bash
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#
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# render_getConfigOption.sh -- This function standardizes the
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# configuration fields are retrived from some action-specific
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# definitions.
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#
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# Copyright (C) 2009, 2010, 2011 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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# $Id$
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# ----------------------------------------------------------------------
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function render_getConfigOption {
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    # Initialize action string.
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    local ACTION="$1"
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    # Initialize field definition.
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    local FIELD="$2"
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    # Initialize configuration options.
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    local OPTION=''
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    # Check action string. The action string must be present in order
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    # for this function to work. It provides the information needed to
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    # retrive configurantion options from.
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    if [[ "$ACTION" == '' ]];then
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        cli_printMessage "`gettext "There is no action string to work with."`" --as-error-line
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    fi
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    # Check field definition. The field definition must match any of
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    # the formats specified by the `-f' option of `cut' command.
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    if [[ ! "$FIELD" =~ '^([0-9]+|[0-9]+-|-[0-9]+|[0-9]+-[0-9]+)$' ]];then
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        cli_printMessage "`gettext "The field definition is not valid."`" --as-error-line
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    fi
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    # Get configuration option from action string.
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    OPTION=$(echo -n "$ACTION" | cut -d: -f${FIELD})
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    # Sanitate configuration option retrived from action string.
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    OPTION=$(echo -n "${OPTION}" \
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        | sed -r 's!^ *!!g' \
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        | sed -r 's!( |,|;) *! !g' \
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        | sed -r 's! *$!!g')
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    # Print out the configuration option retrived from action string,
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    # only if it is not an empty value. Do not use `echo' or `printf'
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    # built-in commands here. Use the `cli_printMessage' functionality
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    # instead.  This is required in order to reverse the apostrophe
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    # codification accomplished when options were retrived from
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    # command-line (cli_parseArgumentsReDef) in the argument of
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    # options like `--post-rendition' and `--last-rendition'.
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    if [[ $OPTION != '' ]];then
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        cli_printMessage "$OPTION" --as-stdout-line
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    fi
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}