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1
18 package org.apache.geronimo.interop.util;
19
20 public class ArrayUtil {
21 public static final boolean[] EMPTY_BOOLEAN_ARRAY =
22 {
23 }
24 ;
25 public static final char[] EMPTY_CHAR_ARRAY =
26 {
27 }
28 ;
29 public static final byte[] EMPTY_BYTE_ARRAY =
30 {
31 }
32 ;
33 public static final short[] EMPTY_SHORT_ARRAY =
34 {
35 }
36 ;
37 public static final int[] EMPTY_INT_ARRAY =
38 {
39 }
40 ;
41 public static final long[] EMPTY_LONG_ARRAY =
42 {
43 }
44 ;
45 public static final float[] EMPTY_FLOAT_ARRAY =
46 {
47 }
48 ;
49 public static final double[] EMPTY_DOUBLE_ARRAY =
50 {
51 }
52 ;
53 public static final Class  [] EMPTY_CLASS_ARRAY =
54 {
55 }
56 ;
57 public static final Object [] EMPTY_OBJECT_ARRAY =
58 {
59 }
60 ;
61 public static final String [] EMPTY_STRING_ARRAY =
62 {
63 }
64 ;
65
66 public static byte[] copy(byte[] x) {
67 return getBytes(x, 0, x.length);
68 }
69
70 public static byte[] concat(byte[] x, byte[] y) {
71 byte[] z = new byte[x.length + y.length];
72 System.arraycopy(x, 0, z, 0, x.length);
73 System.arraycopy(y, 0, z, x.length, y.length);
74 return z;
75 }
76
77 public static byte[] getBytes(byte[] x, int offset, int length) {
78 byte[] y = new byte[length];
79 System.arraycopy(x, offset, y, 0, length);
80 return y;
81 }
82
83 public static int indexOf(byte[] x, byte b) {
84 return indexOf(x, b, 0);
85 }
86
87 public static int indexOf(byte[] x, byte b, int startOffset) {
88 int n = x.length;
89 for (int i = startOffset; i < n; i++) {
90 if (x[i] == b) {
91 return i;
92 }
93 }
94 return -1;
95 }
96
97 public static boolean[] newBooleanArray(int size, boolean[] init) {
98 boolean[] array = new boolean[size];
99 if (init != null) {
100 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
101 }
102 return array;
103 }
104
105 public static char[] newCharArray(int size, char[] init) {
106 char[] array = new char[size];
107 if (init != null) {
108 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
109 }
110 return array;
111 }
112
113 public static byte[] newByteArray(int size, byte[] init) {
114 byte[] array = new byte[size];
115 if (init != null) {
116 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
117 }
118 return array;
119 }
120
121 public static short[] newShortArray(int size, short[] init) {
122 short[] array = new short[size];
123 if (init != null) {
124 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
125 }
126 return array;
127 }
128
129 public static int[] newIntArray(int size, int[] init) {
130 int[] array = new int[size];
131 if (init != null) {
132 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
133 }
134 return array;
135 }
136
137 public static long[] newLongArray(int size, long[] init) {
138 long[] array = new long[size];
139 if (init != null) {
140 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
141 }
142 return array;
143 }
144
145 public static float[] newFloatArray(int size, float[] init) {
146 float[] array = new float[size];
147 if (init != null) {
148 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
149 }
150 return array;
151 }
152
153 public static double[] newDoubleArray(int size, double[] init) {
154 double[] array = new double[size];
155 if (init != null) {
156 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
157 }
158 return array;
159 }
160
161 public static Object [] newObjectArray(int size, Object [] init) {
162 Object [] array = new Object [size];
163 if (init != null) {
164 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
165 }
166 return array;
167 }
168
169 public static Object [] newObjectArray(int size, Object [] init, Class type) {
170 Object [] array = (Object []) java.lang.reflect.Array.newInstance(type, size);
171 if (init != null) {
172 System.arraycopy(init, 0, array, 0, Math.min(size, init.length));
173 }
174 return array;
175 }
176 }
177 |
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