Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 1 | package com.android.internal.util; |
| 2 | |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 3 | import java.io.IOException; |
| 4 | import java.io.OutputStream; |
| 5 | import java.io.PrintWriter; |
| 6 | import java.io.UnsupportedEncodingException; |
| 7 | import java.io.Writer; |
| 8 | import java.nio.ByteBuffer; |
| 9 | import java.nio.CharBuffer; |
| 10 | import java.nio.charset.Charset; |
| 11 | import java.nio.charset.CharsetEncoder; |
| 12 | import java.nio.charset.CoderResult; |
| 13 | import java.nio.charset.CodingErrorAction; |
| 14 | |
| 15 | public class FastPrintWriter extends PrintWriter { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 16 | private static Writer sDummyWriter = new Writer() { |
| 17 | @Override |
| 18 | public void close() throws IOException { |
| 19 | UnsupportedOperationException ex |
| 20 | = new UnsupportedOperationException("Shouldn't be here"); |
| 21 | throw ex; |
| 22 | } |
| 23 | |
| 24 | @Override |
| 25 | public void flush() throws IOException { |
| 26 | close(); |
| 27 | } |
| 28 | |
| 29 | @Override |
| 30 | public void write(char[] buf, int offset, int count) throws IOException { |
| 31 | close(); |
| 32 | } |
| 33 | }; |
| 34 | |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 35 | private final int mBufferLen; |
| 36 | private final char[] mText; |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 37 | private int mPos; |
| 38 | |
| 39 | final private OutputStream mOutputStream; |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 40 | final private boolean mAutoFlush; |
| 41 | final private String mSeparator; |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 42 | |
| 43 | final private Writer mWriter; |
| 44 | |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 45 | private CharsetEncoder mCharset; |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 46 | final private ByteBuffer mBytes; |
| 47 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 48 | private boolean mIoError; |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 49 | |
| 50 | /** |
| 51 | * Constructs a new {@code PrintWriter} with {@code out} as its target |
| 52 | * stream. By default, the new print writer does not automatically flush its |
| 53 | * contents to the target stream when a newline is encountered. |
| 54 | * |
| 55 | * @param out |
| 56 | * the target output stream. |
| 57 | * @throws NullPointerException |
| 58 | * if {@code out} is {@code null}. |
| 59 | */ |
| 60 | public FastPrintWriter(OutputStream out) { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 61 | this(out, false, 8192); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Constructs a new {@code PrintWriter} with {@code out} as its target |
| 66 | * stream. The parameter {@code autoFlush} determines if the print writer |
| 67 | * automatically flushes its contents to the target stream when a newline is |
| 68 | * encountered. |
| 69 | * |
| 70 | * @param out |
| 71 | * the target output stream. |
| 72 | * @param autoFlush |
| 73 | * indicates whether contents are flushed upon encountering a |
| 74 | * newline sequence. |
| 75 | * @throws NullPointerException |
| 76 | * if {@code out} is {@code null}. |
| 77 | */ |
| 78 | public FastPrintWriter(OutputStream out, boolean autoFlush) { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 79 | this(out, autoFlush, 8192); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Constructs a new {@code PrintWriter} with {@code out} as its target |
| 84 | * stream and a custom buffer size. The parameter {@code autoFlush} determines |
| 85 | * if the print writer automatically flushes its contents to the target stream |
| 86 | * when a newline is encountered. |
| 87 | * |
| 88 | * @param out |
| 89 | * the target output stream. |
| 90 | * @param autoFlush |
| 91 | * indicates whether contents are flushed upon encountering a |
| 92 | * newline sequence. |
| 93 | * @param bufferLen |
| 94 | * specifies the size of the FastPrintWriter's internal buffer; the |
| 95 | * default is 8192. |
| 96 | * @throws NullPointerException |
| 97 | * if {@code out} is {@code null}. |
| 98 | */ |
| 99 | public FastPrintWriter(OutputStream out, boolean autoFlush, int bufferLen) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 100 | super(sDummyWriter, autoFlush); |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 101 | if (out == null) { |
| 102 | throw new NullPointerException("out is null"); |
| 103 | } |
| 104 | mBufferLen = bufferLen; |
| 105 | mText = new char[bufferLen]; |
| 106 | mBytes = ByteBuffer.allocate(mBufferLen); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 107 | mOutputStream = out; |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 108 | mWriter = null; |
| 109 | mAutoFlush = autoFlush; |
| 110 | mSeparator = System.lineSeparator(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 111 | initDefaultEncoder(); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Constructs a new {@code PrintWriter} with {@code wr} as its target |
| 116 | * writer. By default, the new print writer does not automatically flush its |
| 117 | * contents to the target writer when a newline is encountered. |
| 118 | * |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 119 | * <p>NOTE: Unlike PrintWriter, this version will still do buffering inside of |
| 120 | * FastPrintWriter before sending data to the Writer. This means you must call |
| 121 | * flush() before retrieving any data from the Writer.</p> |
| 122 | * |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 123 | * @param wr |
| 124 | * the target writer. |
| 125 | * @throws NullPointerException |
| 126 | * if {@code wr} is {@code null}. |
| 127 | */ |
| 128 | public FastPrintWriter(Writer wr) { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 129 | this(wr, false, 8192); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Constructs a new {@code PrintWriter} with {@code out} as its target |
| 134 | * writer. The parameter {@code autoFlush} determines if the print writer |
| 135 | * automatically flushes its contents to the target writer when a newline is |
| 136 | * encountered. |
| 137 | * |
| 138 | * @param wr |
| 139 | * the target writer. |
| 140 | * @param autoFlush |
| 141 | * indicates whether to flush contents upon encountering a |
| 142 | * newline sequence. |
| 143 | * @throws NullPointerException |
| 144 | * if {@code out} is {@code null}. |
| 145 | */ |
| 146 | public FastPrintWriter(Writer wr, boolean autoFlush) { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 147 | this(wr, autoFlush, 8192); |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Constructs a new {@code PrintWriter} with {@code out} as its target |
| 152 | * writer and a custom buffer size. The parameter {@code autoFlush} determines |
| 153 | * if the print writer automatically flushes its contents to the target writer |
| 154 | * when a newline is encountered. |
| 155 | * |
| 156 | * @param wr |
| 157 | * the target writer. |
| 158 | * @param autoFlush |
| 159 | * indicates whether to flush contents upon encountering a |
| 160 | * newline sequence. |
| 161 | * @param bufferLen |
| 162 | * specifies the size of the FastPrintWriter's internal buffer; the |
| 163 | * default is 8192. |
| 164 | * @throws NullPointerException |
| 165 | * if {@code wr} is {@code null}. |
| 166 | */ |
| 167 | public FastPrintWriter(Writer wr, boolean autoFlush, int bufferLen) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 168 | super(sDummyWriter, autoFlush); |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 169 | if (wr == null) { |
| 170 | throw new NullPointerException("wr is null"); |
| 171 | } |
| 172 | mBufferLen = bufferLen; |
| 173 | mText = new char[bufferLen]; |
| 174 | mBytes = null; |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 175 | mOutputStream = null; |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 176 | mWriter = wr; |
| 177 | mAutoFlush = autoFlush; |
| 178 | mSeparator = System.lineSeparator(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 179 | initDefaultEncoder(); |
| 180 | } |
| 181 | |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 182 | private final void initEncoder(String csn) throws UnsupportedEncodingException { |
| 183 | try { |
| 184 | mCharset = Charset.forName(csn).newEncoder(); |
| 185 | } catch (Exception e) { |
| 186 | throw new UnsupportedEncodingException(csn); |
| 187 | } |
| 188 | mCharset.onMalformedInput(CodingErrorAction.REPLACE); |
| 189 | mCharset.onUnmappableCharacter(CodingErrorAction.REPLACE); |
| 190 | } |
| 191 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 192 | /** |
| 193 | * Flushes this writer and returns the value of the error flag. |
| 194 | * |
| 195 | * @return {@code true} if either an {@code IOException} has been thrown |
| 196 | * previously or if {@code setError()} has been called; |
| 197 | * {@code false} otherwise. |
| 198 | * @see #setError() |
| 199 | */ |
| 200 | public boolean checkError() { |
| 201 | flush(); |
| 202 | synchronized (lock) { |
| 203 | return mIoError; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Sets the error state of the stream to false. |
| 209 | * @since 1.6 |
| 210 | */ |
| 211 | protected void clearError() { |
| 212 | synchronized (lock) { |
| 213 | mIoError = false; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Sets the error flag of this writer to true. |
| 219 | */ |
| 220 | protected void setError() { |
| 221 | synchronized (lock) { |
| 222 | mIoError = true; |
| 223 | } |
| 224 | } |
| 225 | |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 226 | private final void initDefaultEncoder() { |
| 227 | mCharset = Charset.defaultCharset().newEncoder(); |
| 228 | mCharset.onMalformedInput(CodingErrorAction.REPLACE); |
| 229 | mCharset.onUnmappableCharacter(CodingErrorAction.REPLACE); |
| 230 | } |
| 231 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 232 | private void appendLocked(char c) throws IOException { |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 233 | int pos = mPos; |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 234 | if (pos >= (mBufferLen-1)) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 235 | flushLocked(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 236 | pos = mPos; |
| 237 | } |
| 238 | mText[pos] = c; |
| 239 | mPos = pos+1; |
| 240 | } |
| 241 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 242 | private void appendLocked(String str, int i, final int length) throws IOException { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 243 | final int BUFFER_LEN = mBufferLen; |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 244 | if (length > BUFFER_LEN) { |
| 245 | final int end = i + length; |
| 246 | while (i < end) { |
| 247 | int next = i + BUFFER_LEN; |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 248 | appendLocked(str, i, next < end ? BUFFER_LEN : (end - i)); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 249 | i = next; |
| 250 | } |
| 251 | return; |
| 252 | } |
| 253 | int pos = mPos; |
| 254 | if ((pos+length) > BUFFER_LEN) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 255 | flushLocked(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 256 | pos = mPos; |
| 257 | } |
| 258 | str.getChars(i, i + length, mText, pos); |
| 259 | mPos = pos + length; |
| 260 | } |
| 261 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 262 | private void appendLocked(char[] buf, int i, final int length) throws IOException { |
Dianne Hackborn | 8c84109 | 2013-06-24 13:46:13 -0700 | [diff] [blame] | 263 | final int BUFFER_LEN = mBufferLen; |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 264 | if (length > BUFFER_LEN) { |
| 265 | final int end = i + length; |
| 266 | while (i < end) { |
| 267 | int next = i + BUFFER_LEN; |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 268 | appendLocked(buf, i, next < end ? BUFFER_LEN : (end - i)); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 269 | i = next; |
| 270 | } |
| 271 | return; |
| 272 | } |
| 273 | int pos = mPos; |
| 274 | if ((pos+length) > BUFFER_LEN) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 275 | flushLocked(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 276 | pos = mPos; |
| 277 | } |
| 278 | System.arraycopy(buf, i, mText, pos, length); |
| 279 | mPos = pos + length; |
| 280 | } |
| 281 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 282 | private void flushBytesLocked() throws IOException { |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 283 | int position; |
| 284 | if ((position = mBytes.position()) > 0) { |
| 285 | mBytes.flip(); |
| 286 | mOutputStream.write(mBytes.array(), 0, position); |
| 287 | mBytes.clear(); |
| 288 | } |
| 289 | } |
| 290 | |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 291 | private void flushLocked() throws IOException { |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 292 | //Log.i("PackageManager", "flush mPos=" + mPos); |
| 293 | if (mPos > 0) { |
| 294 | if (mOutputStream != null) { |
| 295 | CharBuffer charBuffer = CharBuffer.wrap(mText, 0, mPos); |
| 296 | CoderResult result = mCharset.encode(charBuffer, mBytes, true); |
| 297 | while (true) { |
| 298 | if (result.isError()) { |
| 299 | throw new IOException(result.toString()); |
| 300 | } else if (result.isOverflow()) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 301 | flushBytesLocked(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 302 | result = mCharset.encode(charBuffer, mBytes, true); |
| 303 | continue; |
| 304 | } |
| 305 | break; |
| 306 | } |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 307 | flushBytesLocked(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 308 | mOutputStream.flush(); |
| 309 | } else { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 310 | mWriter.write(mText, 0, mPos); |
| 311 | mWriter.flush(); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 312 | } |
| 313 | mPos = 0; |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Ensures that all pending data is sent out to the target. It also |
| 319 | * flushes the target. If an I/O error occurs, this writer's error |
| 320 | * state is set to {@code true}. |
| 321 | */ |
| 322 | @Override |
| 323 | public void flush() { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 324 | synchronized (lock) { |
| 325 | try { |
| 326 | flushLocked(); |
| 327 | if (mOutputStream != null) { |
| 328 | mOutputStream.flush(); |
| 329 | } else { |
| 330 | mWriter.flush(); |
| 331 | } |
| 332 | } catch (IOException e) { |
| 333 | setError(); |
| 334 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 335 | } |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | @Override |
| 339 | public void close() { |
| 340 | synchronized (lock) { |
| 341 | try { |
| 342 | flushLocked(); |
| 343 | if (mOutputStream != null) { |
| 344 | mOutputStream.close(); |
| 345 | } else { |
| 346 | mWriter.close(); |
| 347 | } |
| 348 | } catch (IOException e) { |
| 349 | setError(); |
| 350 | } |
| 351 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /** |
| 355 | * Prints the string representation of the specified character array |
| 356 | * to the target. |
| 357 | * |
| 358 | * @param charArray |
| 359 | * the character array to print to the target. |
| 360 | * @see #print(String) |
| 361 | */ |
| 362 | public void print(char[] charArray) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 363 | synchronized (lock) { |
| 364 | try { |
| 365 | appendLocked(charArray, 0, charArray.length); |
| 366 | } catch (IOException e) { |
| 367 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 368 | } |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * Prints the string representation of the specified character to the |
| 373 | * target. |
| 374 | * |
| 375 | * @param ch |
| 376 | * the character to print to the target. |
| 377 | * @see #print(String) |
| 378 | */ |
| 379 | public void print(char ch) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 380 | synchronized (lock) { |
| 381 | try { |
| 382 | appendLocked(ch); |
| 383 | } catch (IOException e) { |
| 384 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 385 | } |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Prints a string to the target. The string is converted to an array of |
| 390 | * bytes using the encoding chosen during the construction of this writer. |
| 391 | * The bytes are then written to the target with {@code write(int)}. |
| 392 | * <p> |
| 393 | * If an I/O error occurs, this writer's error flag is set to {@code true}. |
| 394 | * |
| 395 | * @param str |
| 396 | * the string to print to the target. |
| 397 | * @see #write(int) |
| 398 | */ |
| 399 | public void print(String str) { |
| 400 | if (str == null) { |
| 401 | str = String.valueOf((Object) null); |
| 402 | } |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 403 | synchronized (lock) { |
| 404 | try { |
| 405 | appendLocked(str, 0, str.length()); |
| 406 | } catch (IOException e) { |
| 407 | setError(); |
| 408 | } |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | |
| 413 | @Override |
| 414 | public void print(int inum) { |
| 415 | if (inum == 0) { |
| 416 | print("0"); |
| 417 | } else { |
| 418 | super.print(inum); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | @Override |
| 423 | public void print(long lnum) { |
| 424 | if (lnum == 0) { |
| 425 | print("0"); |
| 426 | } else { |
| 427 | super.print(lnum); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | /** |
| 432 | * Prints a newline. Flushes this writer if the autoFlush flag is set to {@code true}. |
| 433 | */ |
| 434 | public void println() { |
| 435 | synchronized (lock) { |
| 436 | try { |
| 437 | appendLocked(mSeparator, 0, mSeparator.length()); |
| 438 | if (mAutoFlush) { |
| 439 | flushLocked(); |
| 440 | } |
| 441 | } catch (IOException e) { |
| 442 | setError(); |
| 443 | } |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | @Override |
| 448 | public void println(int inum) { |
| 449 | if (inum == 0) { |
| 450 | println("0"); |
| 451 | } else { |
| 452 | super.println(inum); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | @Override |
| 457 | public void println(long lnum) { |
| 458 | if (lnum == 0) { |
| 459 | println("0"); |
| 460 | } else { |
Dianne Hackborn | 20cdcee | 2013-07-10 18:47:04 -0700 | [diff] [blame] | 461 | super.println(lnum); |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 462 | } |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Prints the string representation of the character array {@code chars} followed by a newline. |
| 467 | * Flushes this writer if the autoFlush flag is set to {@code true}. |
| 468 | */ |
| 469 | public void println(char[] chars) { |
| 470 | print(chars); |
| 471 | println(); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Prints the string representation of the char {@code c} followed by a newline. |
| 476 | * Flushes this writer if the autoFlush flag is set to {@code true}. |
| 477 | */ |
| 478 | public void println(char c) { |
| 479 | print(c); |
| 480 | println(); |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Writes {@code count} characters from {@code buffer} starting at {@code |
| 485 | * offset} to the target. |
| 486 | * <p> |
| 487 | * This writer's error flag is set to {@code true} if this writer is closed |
| 488 | * or an I/O error occurs. |
| 489 | * |
| 490 | * @param buf |
| 491 | * the buffer to write to the target. |
| 492 | * @param offset |
| 493 | * the index of the first character in {@code buffer} to write. |
| 494 | * @param count |
| 495 | * the number of characters in {@code buffer} to write. |
| 496 | * @throws IndexOutOfBoundsException |
| 497 | * if {@code offset < 0} or {@code count < 0}, or if {@code |
| 498 | * offset + count} is greater than the length of {@code buf}. |
| 499 | */ |
| 500 | @Override |
| 501 | public void write(char[] buf, int offset, int count) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 502 | synchronized (lock) { |
| 503 | try { |
| 504 | appendLocked(buf, offset, count); |
| 505 | } catch (IOException e) { |
| 506 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * Writes one character to the target. Only the two least significant bytes |
| 512 | * of the integer {@code oneChar} are written. |
| 513 | * <p> |
| 514 | * This writer's error flag is set to {@code true} if this writer is closed |
| 515 | * or an I/O error occurs. |
| 516 | * |
| 517 | * @param oneChar |
| 518 | * the character to write to the target. |
| 519 | */ |
| 520 | @Override |
| 521 | public void write(int oneChar) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 522 | synchronized (lock) { |
| 523 | try { |
| 524 | appendLocked((char) oneChar); |
| 525 | } catch (IOException e) { |
| 526 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 527 | } |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * Writes the characters from the specified string to the target. |
| 532 | * |
| 533 | * @param str |
| 534 | * the non-null string containing the characters to write. |
| 535 | */ |
| 536 | @Override |
| 537 | public void write(String str) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 538 | synchronized (lock) { |
| 539 | try { |
| 540 | appendLocked(str, 0, str.length()); |
| 541 | } catch (IOException e) { |
| 542 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 543 | } |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Writes {@code count} characters from {@code str} starting at {@code |
| 548 | * offset} to the target. |
| 549 | * |
| 550 | * @param str |
| 551 | * the non-null string containing the characters to write. |
| 552 | * @param offset |
| 553 | * the index of the first character in {@code str} to write. |
| 554 | * @param count |
| 555 | * the number of characters from {@code str} to write. |
| 556 | * @throws IndexOutOfBoundsException |
| 557 | * if {@code offset < 0} or {@code count < 0}, or if {@code |
| 558 | * offset + count} is greater than the length of {@code str}. |
| 559 | */ |
| 560 | @Override |
| 561 | public void write(String str, int offset, int count) { |
Dianne Hackborn | e5a9c92 | 2013-06-24 15:54:52 -0700 | [diff] [blame] | 562 | synchronized (lock) { |
| 563 | try { |
| 564 | appendLocked(str, offset, count); |
| 565 | } catch (IOException e) { |
| 566 | } |
Dianne Hackborn | db4e33f | 2013-04-01 17:28:16 -0700 | [diff] [blame] | 567 | } |
| 568 | } |
| 569 | |
| 570 | /** |
| 571 | * Appends a subsequence of the character sequence {@code csq} to the |
| 572 | * target. This method works the same way as {@code |
| 573 | * PrintWriter.print(csq.subsequence(start, end).toString())}. If {@code |
| 574 | * csq} is {@code null}, then the specified subsequence of the string "null" |
| 575 | * will be written to the target. |
| 576 | * |
| 577 | * @param csq |
| 578 | * the character sequence appended to the target. |
| 579 | * @param start |
| 580 | * the index of the first char in the character sequence appended |
| 581 | * to the target. |
| 582 | * @param end |
| 583 | * the index of the character following the last character of the |
| 584 | * subsequence appended to the target. |
| 585 | * @return this writer. |
| 586 | * @throws StringIndexOutOfBoundsException |
| 587 | * if {@code start > end}, {@code start < 0}, {@code end < 0} or |
| 588 | * either {@code start} or {@code end} are greater or equal than |
| 589 | * the length of {@code csq}. |
| 590 | */ |
| 591 | @Override |
| 592 | public PrintWriter append(CharSequence csq, int start, int end) { |
| 593 | if (csq == null) { |
| 594 | csq = "null"; |
| 595 | } |
| 596 | String output = csq.subSequence(start, end).toString(); |
| 597 | write(output, 0, output.length()); |
| 598 | return this; |
| 599 | } |
| 600 | } |