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AceQL HTTP is a framework of REST like http APIs that allow to access to remote SQL databases over http from any device that supports http. AceQL HTTP is provided with four client SDK: - The AceQL C# Client SDK allows to wrap the HTTP APIs using Microsoft SQL Server like calls in their code, just like they would for a local database. - The AceQL Java Client SDK allows to wrap the HTTP APIs using JDBC calls in their code, just like they would for a local database. - The AceQL Python Client SDK allows SQL calls to be encoded with standard unmodified DB-API 2.0 syntax

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/*
 * Copyright (c)2022 KawanSoft S.A.S. All rights reserved.
 * 
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file in the project's root directory.
 *
 * Change Date: 2026-11-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2.0 of the Apache License.
 */
package org.kawanfw.sql.api.util.webserver;

import java.io.IOException;

import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.kawanfw.sql.util.SqlTag;

/**
 * Util methods for WebServer class.
 * @author Nicolas de Pomereu
 *
 */
public class WebServerUtil {

    /** Universal and clean line separator */
    private static String CR_LF = System.getProperty("line.separator");

    /**
    *
    */
    public static void systemExitWrapper(int value) {
	System.exit(-1);
    }


    /**
     * @param e
     */
    public static void printCauseException(IOException e) {
	if (e.getCause() == null) {
	    e.printStackTrace();
	} else {
	    e.getCause().printStackTrace();
	}
    }



    /**
     * Prints usage
     *
     * @param options the CLI Options
     */
    public static void printUsage(Options options) {
	// automatically generate the help statement
	HelpFormatter formatter = new HelpFormatter();
	formatter.setWidth(400);

	String fromAceqlServerScript = System.getProperty("from.aceql-server.script");

	String help = null;

	if (fromAceqlServerScript != null && fromAceqlServerScript.equals("true")) {
	    help = "aceql-server -start -host  -port  -properties " + CR_LF + "or " + CR_LF
		    + "-stop -port  ";
	} else {
	    help = "java org.kawanfw.sql.WebServer -start -host  -port  -properties " + CR_LF
		    + "or " + CR_LF + "-stop -port  ";
	}

	formatter.printHelp(help, options);
	System.out.println();
    }

    /**
     * Displays the error message and exit Java
     *
     * @param message The message to display before exit
     */
    public static void displayErrorAndExit(String message) {
	System.err.println(message + " " + SqlTag.PLEASE_CORRECT);
	System.err.println();
	systemExitWrapper(-1);
    }

}