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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 public class LongEncodingAlgorithm extends IntegerEncodingAlgorithm {
54
55 public int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
56 if (octetLength % LONG_SIZE != 0) {
57 throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().
58 getString("message.lengthNotMultipleOfLong", new Object []{new Integer (LONG_SIZE)}));
59 }
60
61 return octetLength / LONG_SIZE;
62 }
63
64 public int getOctetLengthFromPrimitiveLength(int primitiveLength) {
65 return primitiveLength * LONG_SIZE;
66 }
67
68 public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException {
69 long[] data = new long[getPrimtiveLengthFromOctetLength(length)];
70 decodeFromBytesToLongArray(data, 0, b, start, length);
71
72 return data;
73 }
74
75 public final Object decodeFromInputStream(InputStream s) throws IOException {
76 return decodeFromInputStreamToIntArray(s);
77 }
78
79
80 public void encodeToOutputStream(Object data, OutputStream s) throws IOException {
81 if (!(data instanceof long[])) {
82 throw new IllegalArgumentException (CommonResourceBundle.getInstance().getString("message.dataNotLongArray"));
83 }
84
85 final long[] ldata = (long[])data;
86
87 encodeToOutputStreamFromLongArray(ldata, s);
88 }
89
90
91 public Object convertFromCharacters(char[] ch, int start, int length) {
92 final CharBuffer cb = CharBuffer.wrap(ch, start, length);
93 final List longList = new ArrayList ();
94
95 matchWhiteSpaceDelimnatedWords(cb,
96 new WordListener() {
97 public void word(int start, int end) {
98 String lStringValue = cb.subSequence(start, end).toString();
99 longList.add(Long.valueOf(lStringValue));
100 }
101 }
102 );
103
104 return generateArrayFromList(longList);
105 }
106
107 public void convertToCharacters(Object data, StringBuffer s) {
108 if (!(data instanceof long[])) {
109 throw new IllegalArgumentException (CommonResourceBundle.getInstance().getString("message.dataNotLongArray"));
110 }
111
112 final long[] ldata = (long[])data;
113
114 convertToCharactersFromLongArray(ldata, s);
115 }
116
117
118 public final void decodeFromBytesToLongArray(long[] ldata, int istart, byte[] b, int start, int length) {
119 final int size = length / LONG_SIZE;
120 for (int i = 0; i < size; i++) {
121 ldata[istart++] =
122 ((long)(b[start++] & 0xFF) << 56) |
123 ((long)(b[start++] & 0xFF) << 48) |
124 ((long)(b[start++] & 0xFF) << 40) |
125 ((long)(b[start++] & 0xFF) << 32) |
126 ((long)(b[start++] & 0xFF) << 24) |
127 ((long)(b[start++] & 0xFF) << 16) |
128 ((long)(b[start++] & 0xFF) << 8) |
129 (long)(b[start++] & 0xFF);
130 }
131 }
132
133 public final long[] decodeFromInputStreamToIntArray(InputStream s) throws IOException {
134 final List longList = new ArrayList ();
135 final byte[] b = new byte[LONG_SIZE];
136
137 while (true) {
138 int n = s.read(b);
139 if (n != LONG_SIZE) {
140 if (n == -1) {
141 break;
142 }
143
144 while(n != LONG_SIZE) {
145 final int m = s.read(b, n, LONG_SIZE - n);
146 if (m == -1) {
147 throw new EOFException ();
148 }
149 n += m;
150 }
151 }
152
153 final int l =
154 ((b[0] & 0xFF) << 56) |
155 ((b[1] & 0xFF) << 48) |
156 ((b[2] & 0xFF) << 40) |
157 ((b[3] & 0xFF) << 32) |
158 ((b[4] & 0xFF) << 24) |
159 ((b[5] & 0xFF) << 16) |
160 ((b[6] & 0xFF) << 8) |
161 (b[7] & 0xFF);
162 longList.add(new Long (l));
163 }
164
165 return generateArrayFromList(longList);
166 }
167
168
169 public final void encodeToOutputStreamFromLongArray(long[] ldata, OutputStream s) throws IOException {
170 for (int i = 0; i < ldata.length; i++) {
171 final long bits = ldata[i];
172 s.write((int)((bits >>> 56) & 0xFF));
173 s.write((int)((bits >>> 48) & 0xFF));
174 s.write((int)((bits >>> 40) & 0xFF));
175 s.write((int)((bits >>> 32) & 0xFF));
176 s.write((int)((bits >>> 24) & 0xFF));
177 s.write((int)((bits >>> 16) & 0xFF));
178 s.write((int)((bits >>> 8) & 0xFF));
179 s.write((int)(bits & 0xFF));
180 }
181 }
182
183 public final void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) {
184 encodeToBytesFromLongArray((long[])array, astart, alength, b, start);
185 }
186
187 public final void encodeToBytesFromLongArray(long[] ldata, int lstart, int llength, byte[] b, int start) {
188 final int lend = lstart + llength;
189 for (int i = lstart; i < lend; i++) {
190 final long bits = ldata[i];
191 b[start++] = (byte)((bits >>> 56) & 0xFF);
192 b[start++] = (byte)((bits >>> 48) & 0xFF);
193 b[start++] = (byte)((bits >>> 40) & 0xFF);
194 b[start++] = (byte)((bits >>> 32) & 0xFF);
195 b[start++] = (byte)((bits >>> 24) & 0xFF);
196 b[start++] = (byte)((bits >>> 16) & 0xFF);
197 b[start++] = (byte)((bits >>> 8) & 0xFF);
198 b[start++] = (byte)(bits & 0xFF);
199 }
200 }
201
202
203 public final void convertToCharactersFromLongArray(long[] ldata, StringBuffer s) {
204 final int end = ldata.length - 1;
205 for (int i = 0; i <= end; i++) {
206 s.append(Long.toString(ldata[i]));
207 if (i != end) {
208 s.append(' ');
209 }
210 }
211 }
212
213
214 public final long[] generateArrayFromList(List array) {
215 long[] ldata = new long[array.size()];
216 for (int i = 0; i < ldata.length; i++) {
217 ldata[i] = ((Long )array.get(i)).longValue();
218 }
219
220 return ldata;
221 }
222 }
223 |
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