001: /*
002: * Licensed to the Apache Software Foundation (ASF) under one or more
003: * contributor license agreements. See the NOTICE file distributed with
004: * this work for additional information regarding copyright ownership.
005: * The ASF licenses this file to You under the Apache License, Version 2.0
006: * (the "License"); you may not use this file except in compliance with
007: * the License. You may obtain a copy of the License at
008: *
009: * http://www.apache.org/licenses/LICENSE-2.0
010: *
011: * Unless required by applicable law or agreed to in writing, software
012: * distributed under the License is distributed on an "AS IS" BASIS,
013: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014: * See the License for the specific language governing permissions and
015: * limitations under the License.
016: */
017:
018: package org.apache.harmony.niochar.charset;
019:
020: import java.nio.charset.Charset;
021: import java.nio.charset.CoderResult;
022: import java.nio.charset.CharsetDecoder;
023: import java.nio.charset.CharsetEncoder;
024: import java.nio.CharBuffer;
025: import java.nio.ByteBuffer;
026:
027: import org.apache.harmony.nio.AddressUtil;
028:
029: public class ISO_8859_2 extends Charset {
030:
031: public ISO_8859_2(String csName, String[] aliases) {
032: super (csName, aliases);
033: }
034:
035: public boolean contains(Charset cs) {
036: return cs.name().equalsIgnoreCase("IBM367")
037: || cs.name().equalsIgnoreCase("IBM870")
038: || cs.name().equalsIgnoreCase("iso-8859-2")
039: || cs.name().equalsIgnoreCase("US-ASCII");
040: }
041:
042: public CharsetDecoder newDecoder() {
043: return new Decoder(this );
044: }
045:
046: public CharsetEncoder newEncoder() {
047: return new Encoder(this );
048: }
049:
050: private static final class Decoder extends CharsetDecoder {
051: private Decoder(Charset cs) {
052: super (cs, 1, 1);
053:
054: }
055:
056: public native int nDecode(char[] array, int arrPosition,
057: int remaining, long outAddr, int absolutePos);
058:
059: protected CoderResult decodeLoop(ByteBuffer bb, CharBuffer cb) {
060: int cbRemaining = cb.remaining();
061: if (bb.isDirect() && bb.hasRemaining() && cb.hasArray()) {
062: int toProceed = bb.remaining();
063: int cbPos = cb.position();
064: int bbPos = bb.position();
065: boolean throwOverflow = false;
066: if (cbRemaining < toProceed) {
067: toProceed = cbRemaining;
068: throwOverflow = true;
069: }
070: int res = nDecode(cb.array(), cb.arrayOffset() + cbPos,
071: toProceed, AddressUtil
072: .getDirectBufferAddress(bb), bbPos);
073: bb.position(bbPos + res);
074: cb.position(cbPos + res);
075: if (throwOverflow)
076: return CoderResult.OVERFLOW;
077: } else {
078: if (bb.hasArray() && cb.hasArray()) {
079: int rem = bb.remaining();
080: rem = cbRemaining >= rem ? rem : cbRemaining;
081: byte[] bArr = bb.array();
082: char[] cArr = cb.array();
083: int bStart = bb.position();
084: int cStart = cb.position();
085: int i;
086: for (i = bStart; i < bStart + rem; i++) {
087: int in = (int) bArr[i];
088: if (in < 0 && in >= -95) {
089: int index = (int) in + 95;
090: cArr[cStart++] = (char) arr[index];
091: } else {
092: cArr[cStart++] = (char) (in & 0xFF);
093: }
094: }
095: bb.position(i);
096: cb.position(cStart);
097: if (rem == cbRemaining && bb.hasRemaining())
098: return CoderResult.OVERFLOW;
099: } else {
100: while (bb.hasRemaining()) {
101: if (cbRemaining == 0)
102: return CoderResult.OVERFLOW;
103: int in = (int) bb.get();
104: if (in < 0 && in >= -95) {
105: int index = (int) in + 95;
106: cb.put(arr[index]);
107: } else {
108: cb.put((char) (in & 0xFF));
109: }
110: cbRemaining--;
111: }
112: }
113: }
114: return CoderResult.UNDERFLOW;
115: }
116:
117: final static char[] arr = { 0x0104, 0x02D8, 0x0141, 0x00A4,
118: 0x013D, 0x015A, 0x00A7, 0x00A8, 0x0160, 0x015E, 0x0164,
119: 0x0179, 0x00AD, 0x017D, 0x017B, 0x00B0, 0x0105, 0x02DB,
120: 0x0142, 0x00B4, 0x013E, 0x015B, 0x02C7, 0x00B8, 0x0161,
121: 0x015F, 0x0165, 0x017A, 0x02DD, 0x017E, 0x017C, 0x0154,
122: 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x0139, 0x0106, 0x00C7,
123: 0x010C, 0x00C9, 0x0118, 0x00CB, 0x011A, 0x00CD, 0x00CE,
124: 0x010E, 0x0110, 0x0143, 0x0147, 0x00D3, 0x00D4, 0x0150,
125: 0x00D6, 0x00D7, 0x0158, 0x016E, 0x00DA, 0x0170, 0x00DC,
126: 0x00DD, 0x0162, 0x00DF, 0x0155, 0x00E1, 0x00E2, 0x0103,
127: 0x00E4, 0x013A, 0x0107, 0x00E7, 0x010D, 0x00E9, 0x0119,
128: 0x00EB, 0x011B, 0x00ED, 0x00EE, 0x010F, 0x0111, 0x0144,
129: 0x0148, 0x00F3, 0x00F4, 0x0151, 0x00F6, 0x00F7, 0x0159,
130: 0x016F, 0x00FA, 0x0171, 0x00FC, 0x00FD, 0x0163, 0x02D9 };
131: }
132:
133: private static final class Encoder extends CharsetEncoder {
134: private Encoder(Charset cs) {
135: super (cs, 1, 1);
136: }
137:
138: private native void nEncode(long outAddr, int absolutePos,
139: char[] array, int arrPosition, int[] res);
140:
141: protected CoderResult encodeLoop(CharBuffer cb, ByteBuffer bb) {
142: int bbRemaining = bb.remaining();
143: if (bb.isDirect() && cb.hasRemaining() && cb.hasArray()) {
144: int toProceed = cb.remaining();
145: int cbPos = cb.position();
146: int bbPos = bb.position();
147: boolean throwOverflow = false;
148: if (bbRemaining < toProceed) {
149: toProceed = bbRemaining;
150: throwOverflow = true;
151: }
152: int[] res = { toProceed, 0 };
153: nEncode(AddressUtil.getDirectBufferAddress(bb), bbPos,
154: cb.array(), cb.arrayOffset() + cbPos, res);
155: if (res[0] <= 0) {
156: bb.position(bbPos - res[0]);
157: cb.position(cbPos - res[0]);
158: if (res[1] != 0) {
159: if (res[1] < 0)
160: return CoderResult
161: .malformedForLength(-res[1]);
162: else
163: return CoderResult
164: .unmappableForLength(res[1]);
165: }
166: } else {
167: bb.position(bbPos + res[0]);
168: cb.position(cbPos + res[0]);
169: if (throwOverflow)
170: return CoderResult.OVERFLOW;
171: }
172: } else {
173: if (bb.hasArray() && cb.hasArray()) {
174: byte[] byteArr = bb.array();
175: char[] charArr = cb.array();
176: int rem = cb.remaining();
177: int byteArrStart = bb.position();
178: rem = bbRemaining <= rem ? bbRemaining : rem;
179: int x;
180: for (x = cb.position(); x < cb.position() + rem; x++) {
181: char c = charArr[x];
182: if (c > (char) 0x02DD) {
183: if (c >= 0xD800 && c <= 0xDFFF) {
184: if (x + 1 < cb.limit()) {
185: char c1 = charArr[x + 1];
186: if (c1 >= 0xD800 && c1 <= 0xDFFF) {
187: cb.position(x);
188: bb.position(byteArrStart);
189: return CoderResult
190: .unmappableForLength(2);
191: }
192: } else {
193: cb.position(x);
194: bb.position(byteArrStart);
195: return CoderResult.UNDERFLOW;
196: }
197: cb.position(x);
198: bb.position(byteArrStart);
199: return CoderResult
200: .malformedForLength(1);
201: }
202: cb.position(x);
203: bb.position(byteArrStart);
204: return CoderResult.unmappableForLength(1);
205: } else {
206: if (c < 0xA1) {
207: byteArr[byteArrStart++] = (byte) c;
208: } else {
209: int index = (int) c >> 8;
210: index = encodeIndex[index];
211: if (index < 0) {
212: cb.position(x);
213: bb.position(byteArrStart);
214: return CoderResult
215: .unmappableForLength(1);
216: }
217: index <<= 8;
218: index += (int) c & 0xFF;
219: if ((byte) arr[index] != 0) {
220: byteArr[byteArrStart++] = (byte) arr[index];
221: } else {
222: cb.position(x);
223: bb.position(byteArrStart);
224: return CoderResult
225: .unmappableForLength(1);
226: }
227: }
228: }
229: }
230: cb.position(x);
231: bb.position(byteArrStart);
232: if (rem == bbRemaining && cb.hasRemaining()) {
233: return CoderResult.OVERFLOW;
234: }
235: } else {
236: while (cb.hasRemaining()) {
237: if (bbRemaining == 0)
238: return CoderResult.OVERFLOW;
239: char c = cb.get();
240: if (c > (char) 0x02DD) {
241: if (c >= 0xD800 && c <= 0xDFFF) {
242: if (cb.hasRemaining()) {
243: char c1 = cb.get();
244: if (c1 >= 0xD800 && c1 <= 0xDFFF) {
245: cb.position(cb.position() - 2);
246: return CoderResult
247: .unmappableForLength(2);
248: } else {
249: cb.position(cb.position() - 1);
250: }
251: } else {
252: cb.position(cb.position() - 1);
253: return CoderResult.UNDERFLOW;
254: }
255: cb.position(cb.position() - 1);
256: return CoderResult
257: .malformedForLength(1);
258: }
259: cb.position(cb.position() - 1);
260: return CoderResult.unmappableForLength(1);
261: } else {
262: if (c < 0xA1) {
263: bb.put((byte) c);
264: } else {
265: int index = (int) c >> 8;
266: index = encodeIndex[index];
267: if (index < 0) {
268: cb.position(cb.position() - 1);
269: return CoderResult
270: .unmappableForLength(1);
271: }
272: index <<= 8;
273: index += (int) c & 0xFF;
274: if ((byte) arr[index] != 0) {
275: bb.put((byte) arr[index]);
276: } else {
277: cb.position(cb.position() - 1);
278: return CoderResult
279: .unmappableForLength(1);
280: }
281: }
282: bbRemaining--;
283: }
284: }
285: }
286: }
287: return CoderResult.UNDERFLOW;
288: }
289:
290: final static char arr[] = {
291:
292: 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
293: 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12,
294: 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B,
295: 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24,
296: 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D,
297: 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
298: 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
299: 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
300: 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51,
301: 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A,
302: 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63,
303: 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
304: 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75,
305: 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E,
306: 0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
307: 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90,
308: 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
309: 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0x00, 0x00,
310: 0x00, 0xA4, 0x00, 0x00, 0xA7, 0xA8, 0x00, 0x00, 0x00,
311: 0x00, 0xAD, 0x00, 0x00, 0xB0, 0x00, 0x00, 0x00, 0xB4,
312: 0x00, 0x00, 0x00, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00,
313: 0x00, 0x00, 0x00, 0xC1, 0xC2, 0x00, 0xC4, 0x00, 0x00,
314: 0xC7, 0x00, 0xC9, 0x00, 0xCB, 0x00, 0xCD, 0xCE, 0x00,
315: 0x00, 0x00, 0x00, 0xD3, 0xD4, 0x00, 0xD6, 0xD7, 0x00,
316: 0x00, 0xDA, 0x00, 0xDC, 0xDD, 0x00, 0xDF, 0x00, 0xE1,
317: 0xE2, 0x00, 0xE4, 0x00, 0x00, 0xE7, 0x00, 0xE9, 0x00,
318: 0xEB, 0x00, 0xED, 0xEE, 0x00, 0x00, 0x00, 0x00, 0xF3,
319: 0xF4, 0x00, 0xF6, 0xF7, 0x00, 0x00, 0xFA, 0x00, 0xFC,
320: 0xFD, 0x00, 0x00,
321:
322: 0x00, 0x00, 0xC3, 0xE3, 0xA1, 0xB1, 0xC6, 0xE6, 0x00,
323: 0x00, 0x00, 0x00, 0xC8, 0xE8, 0xCF, 0xEF, 0xD0, 0xF0,
324: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xCA, 0xEA, 0xCC,
325: 0xEC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
326: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
327: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
328: 0x00, 0x00, 0x00, 0xC5, 0xE5, 0x00, 0x00, 0xA5, 0xB5,
329: 0x00, 0x00, 0xA3, 0xB3, 0xD1, 0xF1, 0x00, 0x00, 0xD2,
330: 0xF2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD5,
331: 0xF5, 0x00, 0x00, 0xC0, 0xE0, 0x00, 0x00, 0xD8, 0xF8,
332: 0xA6, 0xB6, 0x00, 0x00, 0xAA, 0xBA, 0xA9, 0xB9, 0xDE,
333: 0xFE, 0xAB, 0xBB, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
334: 0x00, 0x00, 0xD9, 0xF9, 0xDB, 0xFB, 0x00, 0x00, 0x00,
335: 0x00, 0x00, 0x00, 0x00, 0xAC, 0xBC, 0xAF, 0xBF, 0xAE,
336: 0xBE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
337: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
338: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
339: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
340: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
341: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
342: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
343: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
344: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
345: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
346: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
347: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
348: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
349: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
350: 0x00, 0x00, 0x00, 0x00,
351:
352: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
353: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
354: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
355: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
356: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
357: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
358: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
359: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
360: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
361: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
362: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
363: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
364: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
365: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
366: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
367: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
368: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
369: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
370: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
371: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
372: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
373: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
374: 0x00, 0xB7, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
375: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
376: 0xA2, 0xFF, 0x00, 0xB2, 0x00, 0xBD, 0x00, 0x00, 0x00,
377: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
378: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
379: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
380: 0x00, 0x00, 0x00, 0x00 };
381:
382: final static int[] encodeIndex = { 0, 1, 2, -1, -1, -1, -1, -1,
383: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
384: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
385: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
386: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
387: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
388: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
389: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
390: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
391: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
392: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
393: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
394: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
395: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
396: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
397: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
398: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
399: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
400: -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
401: }
402: }
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