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38
39
40 package com.sun.xml.fastinfoset.algorithm;
41
42 import java.io.EOFException  ;
43 import java.io.IOException ;
44 import java.io.InputStream ;
45 import java.io.OutputStream ;
46 import java.nio.CharBuffer ;
47 import java.util.ArrayList ;
48 import java.util.List ;
49 import org.jvnet.fastinfoset.EncodingAlgorithmException;
50 import com.sun.xml.fastinfoset.CommonResourceBundle;
51
52
53
54 public class IntEncodingAlgorithm extends IntegerEncodingAlgorithm {
55
56 public final int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
57 if (octetLength % INT_SIZE != 0) {
58 throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().
59 getString("message.lengthNotMultipleOfInt", new Object []{new Integer (INT_SIZE)}));
60 }
61
62 return octetLength / INT_SIZE;
63 }
64
65 public int getOctetLengthFromPrimitiveLength(int primitiveLength) {
66 return primitiveLength * INT_SIZE;
67 }
68
69 public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException {
70 int[] data = new int[getPrimtiveLengthFromOctetLength(length)];
71 decodeFromBytesToIntArray(data, 0, b, start, length);
72
73 return data;
74 }
75
76 public final Object decodeFromInputStream(InputStream s) throws IOException {
77 return decodeFromInputStreamToIntArray(s);
78 }
79
80
81 public void encodeToOutputStream(Object data, OutputStream s) throws IOException {
82 if (!(data instanceof int[])) {
83 throw new IllegalArgumentException (CommonResourceBundle.getInstance().getString("message.dataNotIntArray"));
84 }
85
86 final int[] idata = (int[])data;
87
88 encodeToOutputStreamFromIntArray(idata, s);
89 }
90
91
92 public final Object convertFromCharacters(char[] ch, int start, int length) {
93 final CharBuffer cb = CharBuffer.wrap(ch, start, length);
94 final List integerList = new ArrayList ();
95
96 matchWhiteSpaceDelimnatedWords(cb,
97 new WordListener() {
98 public void word(int start, int end) {
99 String iStringValue = cb.subSequence(start, end).toString();
100 integerList.add(Integer.valueOf(iStringValue));
101 }
102 }
103 );
104
105 return generateArrayFromList(integerList);
106 }
107
108 public final void convertToCharacters(Object data, StringBuffer s) {
109 if (!(data instanceof int[])) {
110 throw new IllegalArgumentException (CommonResourceBundle.getInstance().getString("message.dataNotIntArray"));
111 }
112
113 final int[] idata = (int[])data;
114
115 convertToCharactersFromIntArray(idata, s);
116 }
117
118
119 public final void decodeFromBytesToIntArray(int[] idata, int istart, byte[] b, int start, int length) {
120 final int size = length / INT_SIZE;
121 for (int i = 0; i < size; i++) {
122 idata[istart++] = ((b[start++] & 0xFF) << 24) |
123 ((b[start++] & 0xFF) << 16) |
124 ((b[start++] & 0xFF) << 8) |
125 (b[start++] & 0xFF);
126 }
127 }
128
129 public final int[] decodeFromInputStreamToIntArray(InputStream s) throws IOException {
130 final List integerList = new ArrayList ();
131 final byte[] b = new byte[INT_SIZE];
132
133 while (true) {
134 int n = s.read(b);
135 if (n != 4) {
136 if (n == -1) {
137 break;
138 }
139
140 while(n != 4) {
141 final int m = s.read(b, n, INT_SIZE - n);
142 if (m == -1) {
143 throw new EOFException ();
144 }
145 n += m;
146 }
147 }
148
149 final int i = ((b[0] & 0xFF) << 24) |
150 ((b[1] & 0xFF) << 16) |
151 ((b[2] & 0xFF) << 8) |
152 (b[3] & 0xFF);
153 integerList.add(new Integer (i));
154 }
155
156 return generateArrayFromList(integerList);
157 }
158
159
160 public final void encodeToOutputStreamFromIntArray(int[] idata, OutputStream s) throws IOException {
161 for (int i = 0; i < idata.length; i++) {
162 final int bits = idata[i];
163 s.write((bits >>> 24) & 0xFF);
164 s.write((bits >>> 16) & 0xFF);
165 s.write((bits >>> 8) & 0xFF);
166 s.write(bits & 0xFF);
167 }
168 }
169
170 public final void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) {
171 encodeToBytesFromIntArray((int[])array, astart, alength, b, start);
172 }
173
174 public final void encodeToBytesFromIntArray(int[] idata, int istart, int ilength, byte[] b, int start) {
175 final int iend = istart + ilength;
176 for (int i = istart; i < iend; i++) {
177 final int bits = idata[i];
178 b[start++] = (byte)((bits >>> 24) & 0xFF);
179 b[start++] = (byte)((bits >>> 16) & 0xFF);
180 b[start++] = (byte)((bits >>> 8) & 0xFF);
181 b[start++] = (byte)(bits & 0xFF);
182 }
183 }
184
185
186 public final void convertToCharactersFromIntArray(int[] idata, StringBuffer s) {
187 final int end = idata.length - 1;
188 for (int i = 0; i <= end; i++) {
189 s.append(Integer.toString(idata[i]));
190 if (i != end) {
191 s.append(' ');
192 }
193 }
194 }
195
196
197 public final int[] generateArrayFromList(List array) {
198 int[] idata = new int[array.size()];
199 for (int i = 0; i < idata.length; i++) {
200 idata[i] = ((Integer )array.get(i)).intValue();
201 }
202
203 return idata;
204 }
205 }
206 |
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