beb384 Add `init.sh' file to `Functions/Commons' directory.

Authored and Committed by areguera 12 years ago
    Add `init.sh' file to `Functions/Commons' directory.
    
    
        
Scripts/Bash/Functions/Commons/init.sh ADDED
@@ -0,0 +1,132 @@
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+ #!/bin/bash
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+ #
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+ # init.sh -- This function initiates the application's command-line
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+ # interface. Variables defined in this function are accesible by all
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+ # other functions. The cli function is the first script executed by
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+ # the application command-line onces invoked.
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+ #
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+ # Copyright (C) 2009, 2010, 2011, 2012 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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+
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+ function init {
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+
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+ # Initialize global variables.
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+ local CLI_FUNCNAME=''
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+ local CLI_FUNCDIRNAM=''
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+ local CLI_FUNCSCRIPT=''
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+ local ARGUMENTS=''
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+
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+ # Initialize default value to filter flag. The filter flag
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+ # (--filter) is used mainly to reduce the number of files to
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+ # process. The value of this variable is interpreted as
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+ # egrep-posix regular expression. By default, everything matches.
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+ local FLAG_FILTER='.+'
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+
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+ # Initialize default value to verbosity flag. The verbosity flag
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+ # (--quiet) controls whether centos-art.sh script prints messages
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+ # or not. By default, all messages are printed out.
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+ local FLAG_QUIET='false'
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+
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+ # Initialize default value to answer flag. The answer flag
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+ # (--answer-yes) controls whether centos-art.sh script does or
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+ # does not pass confirmation request points. By default, it
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+ # doesn't.
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+ local FLAG_ANSWER='false'
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+
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+ # Initialize default value to don't commit changes flag. The don't
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+ # commit changes flag (--dont-commit-changes) controls whether
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+ # centos-art.sh script syncronizes changes between the central
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+ # repository and the working copy. By default, it does.
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+ local FLAG_DONT_COMMIT_CHANGES='false'
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+
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+ # Initialize list of common functionalities to load.
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+ local FILES=$(ls ${CLI_FUNCDIR}/Commons/*.sh)
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+
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+ # Initialize common functionalities.
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+ for FILE in ${FILES};do
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+ if [[ -x ${FILE} ]];then
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+ . ${FILE}
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+ export -f $(grep '^function ' ${FILE} | cut -d' ' -f2)
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+ else
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+ echo "`eval_gettext "The \\\$FILE needs to have execution rights."`"
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+ exit
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+ fi
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+ done
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+
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+ # Trap signals in order to terminate the script execution
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+ # correctly (e.g., removing all temporal files before leaving).
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+ # Trapping the exit signal seems to be enough by now, since it is
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+ # always present as part of the script execution flow. Each time
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+ # the centos-art.sh script is executed it will inevitably end with
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+ # an EXIT signal at some point of its execution, even if it is
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+ # interrupted in the middle of its execution (e.g., through
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+ # `Ctrl+C').
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+ trap cli_terminateScriptExecution 0
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+
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+ # Redefine ARGUMENTS variable using current positional parameters.
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+ cli_parseArgumentsReDef "$@"
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+
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+ # Check function name. The function name is critical for
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+ # centos-art.sh script to do something coherent. If it is not
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+ # provided, execute the help functionality and end script
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+ # execution.
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+ if [[ ! "$1" ]] || [[ ! "$1" =~ '^[[:alpha:]]' ]];then
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+ echo 'No functionality passed as first argument.'
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+ # exec ${CLI_BASEDIR}/${CLI_NAME}.sh help
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+ exit
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+ fi
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+
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+ # Define function name (CLI_FUNCNAME) using the first argument in
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+ # the command-line.
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+ CLI_FUNCNAME=$(cli_getRepoName $1 -f | cut -d '-' -f 1)
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+
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+ # Define function directory.
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+ CLI_FUNCDIRNAM=$(cli_getRepoName $CLI_FUNCNAME -d)
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+
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+ # Define function file name.
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+ CLI_FUNCSCRIPT=${CLI_FUNCDIR}/${CLI_FUNCDIRNAM}/${CLI_FUNCNAME}.sh
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+
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+ # Check function script execution rights.
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+ cli_checkFiles "${CLI_FUNCSCRIPT}" --execution
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+
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+ # Remove the first argument passed to centos-art.sh command-line
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+ # in order to build optional arguments inside functionalities. We
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+ # start counting from second argument (inclusive) on.
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+ shift 1
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+
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+ # Redefine ARGUMENTS using current positional parameters.
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+ cli_parseArgumentsReDef "$@"
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+
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+ # Define default text editors used by centos-art.sh script.
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+ if [[ ! "$EDITOR" =~ '/usr/bin/(vim|emacs|nano)' ]];then
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+ EDITOR='/usr/bin/vim'
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+ fi
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+
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+ # Check text editor execution rights.
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+ cli_checkFiles $EDITOR --execution
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+
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+ # Go for function initialization. Keep the cli_exportFunctions
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+ # function calling after all variables and arguments definitions.
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+ cli_exportFunctions "${CLI_FUNCDIR}/${CLI_FUNCDIRNAM}"
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+
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+ # Execute function.
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+ eval $CLI_FUNCNAME
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+
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+ }