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Diff Revisions 818 vs 819 for /trunk/Java/core/Anywhere/src/org/litesoft/core/typeutils/Integers.java

		@@ -87,4 +87,111 @@
87	87		}
88	88		return false;
89	89		}
	90	+
	91	+	public static boolean checkIndex( int pIndex, int pMax, boolean pInclusive )
	92	+	{
	93	+	return ((0 <= pIndex) && (pIndex < pMax)) \|\| (pInclusive && (pIndex == pMax));
	94	+	}
	95	+
	96	+	public static void validateIndex( int pIndex, int pMax, boolean pInclusive )
	97	+	throws IllegalArgumentException
	98	+	{
	99	+	if ( !checkIndex( pIndex, pMax, pInclusive ) )
	100	+	{
	101	+	throw new IllegalArgumentException( "!( 0 <= " + pIndex + " " + (pInclusive ? "<=" : "<") + " " + pMax + " )" );
	102	+	}
	103	+	}
	104	+
	105	+	/**
	106	+	* return pIndex constained between 0 (inclusive) and pMax (pInclusive). If the effective 'max' is less than 0, then 0 will be returned.
	107	+	*/
	108	+	public static int constrainIndex( int pIndex, int pMax, boolean pInclusive )
	109	+	{
	110	+	if ( (pMax <= pIndex) \|\| (pInclusive && (pIndex == pMax)) )
	111	+	{
	112	+	pIndex = pInclusive ? pMax : pMax - 1;
	113	+	}
	114	+	return (pIndex < 0) ? 0 : pIndex;
	115	+	}
	116	+
	117	+	public static String getMax2PlacePercentage( int pPortions )
	118	+	{
	119	+	if ( pPortions == 0 )
	120	+	{
	121	+	return null;
	122	+	}
	123	+	int portion = 10000 / pPortions;
	124	+	String s = "" + portion;
	125	+	while ( s.length() < 3 )
	126	+	{
	127	+	s = "0" + s;
	128	+	}
	129	+	int wholeLen = s.length() - 2;
	130	+	s = s.substring( 0, wholeLen ) + "." + s.substring( wholeLen );
	131	+	while ( s.charAt( s.length() - 1 ) == '0' )
	132	+	{
	133	+	s = s.substring( 0, s.length() - 1 );
	134	+	}
	135	+	if ( s.charAt( s.length() - 1 ) == '.' )
	136	+	{
	137	+	s = s.substring( 0, s.length() - 1 );
	138	+	}
	139	+	return s + "%";
	140	+	}
	141	+
	142	+	public static boolean areNonArraysEqual( int pThis, int pThat )
	143	+	{
	144	+	return (pThis == pThat);
	145	+	}
	146	+
	147	+	/**
	148	+	* Returns a String that represents <i>pThis</i> with english code tail,
	149	+	* such as "3rd".<p>
	150	+	* <p/>
	151	+	* If <i>pThis</i> is non-negative, then append on the appropriate two
	152	+	* letter <i>english</i> code:<p>
	153	+	* <pre>
	154	+	* st,nd,rd,th
	155	+	* </pre><p>
	156	+	*
	157	+	* @param pThis the int to convert.<p>
	158	+	*
	159	+	* @return the String representation for <i>pThis</i> and if not negative,
	160	+	* then appended with the appropriate two letter <i>english</i>
	161	+	* junk.<p>
	162	+	*/
	163	+	public static String toNth( int pThis )
	164	+	{
	165	+	String rv = Integer.toString( pThis );
	166	+	if ( pThis < 0 )
	167	+	{
	168	+	return rv;
	169	+	}
	170	+
	171	+	if ( (pThis < 10) \|\| ('1' != rv.charAt( rv.length() - 2 )) ) // not: 10-19 & 110-119, 210-219, ... 1010-1019, ...
	172	+	{
	173	+	switch ( rv.charAt( rv.length() - 1 ) )
	174	+	{
	175	+	case '1':
	176	+	return rv + "st";
	177	+	case '2':
	178	+	return rv + "nd";
	179	+	case '3':
	180	+	return rv + "rd";
	181	+	default: // 0th and n0th and 4th - 9th and n4th - n9th
	182	+	break;
	183	+	}
	184	+	}
	185	+	return rv + "th";
	186	+	}
	187	+
	188	+	public static int insureNonNegative( int pValue )
	189	+	{
	190	+	return (pValue < 0) ? 0 : pValue;
	191	+	}
	192	+
	193	+	public static int intValue( Integer pInteger, int pDefault )
	194	+	{
	195	+	return (pInteger != null) ? pInteger : pDefault;
	196	+	}
90	197		}

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