Java Array Flatten flattenArguments(String[] arguments)

Description

This method flattens an array of arguments to a string.

License

Open Source License

Parameter

Parameter	Description
arguments	The array of strings to flatten.

Return

the flattened string.

Declaration

static public String flattenArguments(String[] arguments) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:/*ww  w  .j a v  a2 s.  c  o m*/
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

public class Main {
    /**
      * This method flattens an array of arguments to a string.
      * The method respects embedded whitespace and quotes.
      * <ul>
      * <li>Any argument with embedded whitespace will be flattened out
      * with enclosing quotes. For example, the single argument
      * <u>Hello World</u>
      * will be returned as
      * <u>"Hello World"</u>.
      * <li>Any argument with quotes will be flattened out with the
      * quotes escaped. For example, the single argument
      * <u>"Happy days"</u>
      * will be returned as
      * <u>\"Happy days\"</u>.
      * </ul>
      * @param arguments The array of strings to flatten.
      * @return the flattened string.
    */
    static public String flattenArguments(String[] arguments) {
        StringBuffer buf = new StringBuffer();

        for (int i = 0; i < arguments.length; i++) {
            //
            // Append a separator (except the first time).
            //
            if (i > 0)
                buf.append(' ');

            //
            // Look for whitespace.
            //
            boolean whitespace = false;
            char[] chars = arguments[i].toCharArray();
            for (int j = 0; !whitespace && j < chars.length; j++) {
                if (Character.isWhitespace(chars[j])) {
                    whitespace = true;
                }
            }

            //
            // Append the argument, quoted as necessary.
            //
            if (whitespace)
                buf.append('"');
            for (int j = 0; j < chars.length; j++) {
                if (chars[j] == '"')
                    buf.append('\\');
                buf.append(chars[j]);
            }
            if (whitespace)
                buf.append('"');
        }

        return buf.toString();
    }
}

Related

1. flatten(Object[] array)
2. flatten(Object[] array)
3. flatten(Object[] lines, String sep)
4. flatten(String s[])
5. flatten(String[] strings, String separator)
6. flattenArray(Object... objects)
7. flattenArray(Object[] words)
8. flattenArray(String[] aString)
9. flattenBytes(byte[] b)