// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.aokeyhole.objects.support;

public abstract class AbstractBase {
    public static final String[] EMPTY_STRINGS = new String[0];

    public static boolean areEqual( Object p1, Object p2 ) {
        return (p1 == p2) || // Identity the same or both null
               ((p1 != null) && p1.equals( p2 ));
    }

    public static String trimEmptyToNull( String pSource ) {
        if ( pSource != null ) {
            pSource = pSource.trim();
            if ( pSource.length() != 0 ) {
                return pSource;
            }
        }
        return null;
    }

    public static String objectToString( Object pObject ) {
        return (pObject == null) ? null : pObject.toString();
    }

    public static String deNull( String pString ) {
        return (pString == null) ? "" : pString;
    }

    public static boolean allDigits( String pInput ) {
        for ( int i = 0; i < pInput.length(); i++ ) {
            char c = pInput.charAt( i );
            if ( (c < '0') || ('9' < c) ) {
                return false;
            }
        }
        return true;
    }

    public static String deSpace( String pString ) {
        int spAt = pString.indexOf( ' ' );
        if ( spAt == -1 ) {
            return pString;
        }
        StringBuilder sb = new StringBuilder( pString );
        while ( spAt < sb.length() ) {
            if ( ' ' == sb.charAt( spAt ) ) {
                sb.deleteCharAt( spAt );
            } else {
                spAt++;
            }
        }
        return sb.toString();
    }
}