| 1 | /* |
| 2 | * Copyright 2001-2006 Stephen Colebourne |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.joda.time.format; |
| 17 | |
| 18 | import java.io.IOException; |
| 19 | import java.io.Writer; |
| 20 | import java.util.ArrayList; |
| 21 | import java.util.Collections; |
| 22 | import java.util.List; |
| 23 | import java.util.Locale; |
| 24 | import java.util.TreeSet; |
| 25 | |
| 26 | import org.joda.time.DateTimeConstants; |
| 27 | import org.joda.time.DurationFieldType; |
| 28 | import org.joda.time.PeriodType; |
| 29 | import org.joda.time.ReadWritablePeriod; |
| 30 | import org.joda.time.ReadablePeriod; |
| 31 | |
| 32 | /** |
| 33 | * Factory that creates complex instances of PeriodFormatter via method calls. |
| 34 | * <p> |
| 35 | * Period formatting is performed by the {@link PeriodFormatter} class. |
| 36 | * Three classes provide factory methods to create formatters, and this is one. |
| 37 | * The others are {@link PeriodFormat} and {@link ISOPeriodFormat}. |
| 38 | * <p> |
| 39 | * PeriodFormatterBuilder is used for constructing formatters which are then |
| 40 | * used to print or parse. The formatters are built by appending specific fields |
| 41 | * or other formatters to an instance of this builder. |
| 42 | * <p> |
| 43 | * For example, a formatter that prints years and months, like "15 years and 8 months", |
| 44 | * can be constructed as follows: |
| 45 | * <p> |
| 46 | * <pre> |
| 47 | * PeriodFormatter yearsAndMonths = new PeriodFormatterBuilder() |
| 48 | * .printZeroAlways() |
| 49 | * .appendYears() |
| 50 | * .appendSuffix(" year", " years") |
| 51 | * .appendSeparator(" and ") |
| 52 | * .printZeroRarely() |
| 53 | * .appendMonths() |
| 54 | * .appendSuffix(" month", " months") |
| 55 | * .toFormatter(); |
| 56 | * </pre> |
| 57 | * <p> |
| 58 | * PeriodFormatterBuilder itself is mutable and not thread-safe, but the |
| 59 | * formatters that it builds are thread-safe and immutable. |
| 60 | * |
| 61 | * @author Brian S O'Neill |
| 62 | * @since 1.0 |
| 63 | * @see PeriodFormat |
| 64 | */ |
| 65 | public class PeriodFormatterBuilder { |
| 66 | private static final int PRINT_ZERO_RARELY_FIRST = 1; |
| 67 | private static final int PRINT_ZERO_RARELY_LAST = 2; |
| 68 | private static final int PRINT_ZERO_IF_SUPPORTED = 3; |
| 69 | private static final int PRINT_ZERO_ALWAYS = 4; |
| 70 | private static final int PRINT_ZERO_NEVER = 5; |
| 71 | |
| 72 | private static final int YEARS = 0; |
| 73 | private static final int MONTHS = 1; |
| 74 | private static final int WEEKS = 2; |
| 75 | private static final int DAYS = 3; |
| 76 | private static final int HOURS = 4; |
| 77 | private static final int MINUTES = 5; |
| 78 | private static final int SECONDS = 6; |
| 79 | private static final int MILLIS = 7; |
| 80 | private static final int SECONDS_MILLIS = 8; |
| 81 | private static final int SECONDS_OPTIONAL_MILLIS = 9; |
| 82 | private static final int MAX_FIELD = SECONDS_OPTIONAL_MILLIS; |
| 83 | |
| 84 | private int iMinPrintedDigits; |
| 85 | private int iPrintZeroSetting; |
| 86 | private int iMaxParsedDigits; |
| 87 | private boolean iRejectSignedValues; |
| 88 | |
| 89 | private PeriodFieldAffix iPrefix; |
| 90 | |
| 91 | // List of Printers and Parsers used to build a final formatter. |
| 92 | private List iElementPairs; |
| 93 | /** Set to true if the formatter is not a printer. */ |
| 94 | private boolean iNotPrinter; |
| 95 | /** Set to true if the formatter is not a parser. */ |
| 96 | private boolean iNotParser; |
| 97 | |
| 98 | // Last PeriodFormatter appended of each field type. |
| 99 | private FieldFormatter[] iFieldFormatters; |
| 100 | |
| 101 | public PeriodFormatterBuilder() { |
| 102 | clear(); |
| 103 | } |
| 104 | |
| 105 | //----------------------------------------------------------------------- |
| 106 | /** |
| 107 | * Constructs a PeriodFormatter using all the appended elements. |
| 108 | * <p> |
| 109 | * This is the main method used by applications at the end of the build |
| 110 | * process to create a usable formatter. |
| 111 | * <p> |
| 112 | * Subsequent changes to this builder do not affect the returned formatter. |
| 113 | * <p> |
| 114 | * The returned formatter may not support both printing and parsing. |
| 115 | * The methods {@link PeriodFormatter#isPrinter()} and |
| 116 | * {@link PeriodFormatter#isParser()} will help you determine the state |
| 117 | * of the formatter. |
| 118 | * |
| 119 | * @return the newly created formatter |
| 120 | * @throws IllegalStateException if the builder can produce neither a printer nor a parser |
| 121 | */ |
| 122 | public PeriodFormatter toFormatter() { |
| 123 | PeriodFormatter formatter = toFormatter(iElementPairs, iNotPrinter, iNotParser); |
| 124 | iFieldFormatters = (FieldFormatter[]) iFieldFormatters.clone(); |
| 125 | return formatter; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Internal method to create a PeriodPrinter instance using all the |
| 130 | * appended elements. |
| 131 | * <p> |
| 132 | * Most applications will not use this method. |
| 133 | * If you want a printer in an application, call {@link #toFormatter()} |
| 134 | * and just use the printing API. |
| 135 | * <p> |
| 136 | * Subsequent changes to this builder do not affect the returned printer. |
| 137 | * |
| 138 | * @return the newly created printer, null if builder cannot create a printer |
| 139 | */ |
| 140 | public PeriodPrinter toPrinter() { |
| 141 | if (iNotPrinter) { |
| 142 | return null; |
| 143 | } |
| 144 | return toFormatter().getPrinter(); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Internal method to create a PeriodParser instance using all the |
| 149 | * appended elements. |
| 150 | * <p> |
| 151 | * Most applications will not use this method. |
| 152 | * If you want a printer in an application, call {@link #toFormatter()} |
| 153 | * and just use the printing API. |
| 154 | * <p> |
| 155 | * Subsequent changes to this builder do not affect the returned parser. |
| 156 | * |
| 157 | * @return the newly created parser, null if builder cannot create a parser |
| 158 | */ |
| 159 | public PeriodParser toParser() { |
| 160 | if (iNotParser) { |
| 161 | return null; |
| 162 | } |
| 163 | return toFormatter().getParser(); |
| 164 | } |
| 165 | |
| 166 | //----------------------------------------------------------------------- |
| 167 | /** |
| 168 | * Clears out all the appended elements, allowing this builder to be reused. |
| 169 | */ |
| 170 | public void clear() { |
| 171 | iMinPrintedDigits = 1; |
| 172 | iPrintZeroSetting = PRINT_ZERO_RARELY_LAST; |
| 173 | iMaxParsedDigits = 10; |
| 174 | iRejectSignedValues = false; |
| 175 | iPrefix = null; |
| 176 | if (iElementPairs == null) { |
| 177 | iElementPairs = new ArrayList(); |
| 178 | } else { |
| 179 | iElementPairs.clear(); |
| 180 | } |
| 181 | iNotPrinter = false; |
| 182 | iNotParser = false; |
| 183 | iFieldFormatters = new FieldFormatter[10]; |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Appends another formatter. |
| 188 | * |
| 189 | * @return this PeriodFormatterBuilder |
| 190 | */ |
| 191 | public PeriodFormatterBuilder append(PeriodFormatter formatter) { |
| 192 | if (formatter == null) { |
| 193 | throw new IllegalArgumentException("No formatter supplied"); |
| 194 | } |
| 195 | clearPrefix(); |
| 196 | append0(formatter.getPrinter(), formatter.getParser()); |
| 197 | return this; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Appends a printer parser pair. |
| 202 | * <p> |
| 203 | * Either the printer or the parser may be null, in which case the builder will |
| 204 | * be unable to produce a parser or printer repectively. |
| 205 | * |
| 206 | * @param printer appends a printer to the builder, null if printing is not supported |
| 207 | * @param parser appends a parser to the builder, null if parsing is not supported |
| 208 | * @return this PeriodFormatterBuilder |
| 209 | * @throws IllegalArgumentException if both the printer and parser are null |
| 210 | */ |
| 211 | public PeriodFormatterBuilder append(PeriodPrinter printer, PeriodParser parser) { |
| 212 | if (printer == null && parser == null) { |
| 213 | throw new IllegalArgumentException("No printer or parser supplied"); |
| 214 | } |
| 215 | clearPrefix(); |
| 216 | append0(printer, parser); |
| 217 | return this; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Instructs the printer to emit specific text, and the parser to expect it. |
| 222 | * The parser is case-insensitive. |
| 223 | * |
| 224 | * @return this PeriodFormatterBuilder |
| 225 | * @throws IllegalArgumentException if text is null |
| 226 | */ |
| 227 | public PeriodFormatterBuilder appendLiteral(String text) { |
| 228 | if (text == null) { |
| 229 | throw new IllegalArgumentException("Literal must not be null"); |
| 230 | } |
| 231 | clearPrefix(); |
| 232 | Literal literal = new Literal(text); |
| 233 | append0(literal, literal); |
| 234 | return this; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Set the minimum digits printed for the next and following appended |
| 239 | * fields. By default, the minimum digits printed is one. If the field value |
| 240 | * is zero, it is not printed unless a printZero rule is applied. |
| 241 | * |
| 242 | * @return this PeriodFormatterBuilder |
| 243 | */ |
| 244 | public PeriodFormatterBuilder minimumPrintedDigits(int minDigits) { |
| 245 | iMinPrintedDigits = minDigits; |
| 246 | return this; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Set the maximum digits parsed for the next and following appended |
| 251 | * fields. By default, the maximum digits parsed is ten. |
| 252 | * |
| 253 | * @return this PeriodFormatterBuilder |
| 254 | */ |
| 255 | public PeriodFormatterBuilder maximumParsedDigits(int maxDigits) { |
| 256 | iMaxParsedDigits = maxDigits; |
| 257 | return this; |
| 258 | } |
| 259 | |
| 260 | /** |
| 261 | * Reject signed values when parsing the next and following appended fields. |
| 262 | * |
| 263 | * @return this PeriodFormatterBuilder |
| 264 | */ |
| 265 | public PeriodFormatterBuilder rejectSignedValues(boolean v) { |
| 266 | iRejectSignedValues = v; |
| 267 | return this; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * Never print zero values for the next and following appended fields, |
| 272 | * unless no fields would be printed. If no fields are printed, the printer |
| 273 | * forces the last "printZeroRarely" field to print a zero. |
| 274 | * <p> |
| 275 | * This field setting is the default. |
| 276 | * |
| 277 | * @return this PeriodFormatterBuilder |
| 278 | */ |
| 279 | public PeriodFormatterBuilder printZeroRarelyLast() { |
| 280 | iPrintZeroSetting = PRINT_ZERO_RARELY_LAST; |
| 281 | return this; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Never print zero values for the next and following appended fields, |
| 286 | * unless no fields would be printed. If no fields are printed, the printer |
| 287 | * forces the first "printZeroRarely" field to print a zero. |
| 288 | * |
| 289 | * @return this PeriodFormatterBuilder |
| 290 | */ |
| 291 | public PeriodFormatterBuilder printZeroRarelyFirst() { |
| 292 | iPrintZeroSetting = PRINT_ZERO_RARELY_FIRST; |
| 293 | return this; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Print zero values for the next and following appened fields only if the |
| 298 | * period supports it. |
| 299 | * |
| 300 | * @return this PeriodFormatterBuilder |
| 301 | */ |
| 302 | public PeriodFormatterBuilder printZeroIfSupported() { |
| 303 | iPrintZeroSetting = PRINT_ZERO_IF_SUPPORTED; |
| 304 | return this; |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Always print zero values for the next and following appended fields, |
| 309 | * even if the period doesn't support it. The parser requires values for |
| 310 | * fields that always print zero. |
| 311 | * |
| 312 | * @return this PeriodFormatterBuilder |
| 313 | */ |
| 314 | public PeriodFormatterBuilder printZeroAlways() { |
| 315 | iPrintZeroSetting = PRINT_ZERO_ALWAYS; |
| 316 | return this; |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * Never print zero values for the next and following appended fields, |
| 321 | * unless no fields would be printed. If no fields are printed, the printer |
| 322 | * forces the last "printZeroRarely" field to print a zero. |
| 323 | * <p> |
| 324 | * This field setting is the default. |
| 325 | * |
| 326 | * @return this PeriodFormatterBuilder |
| 327 | */ |
| 328 | public PeriodFormatterBuilder printZeroNever() { |
| 329 | iPrintZeroSetting = PRINT_ZERO_NEVER; |
| 330 | return this; |
| 331 | } |
| 332 | |
| 333 | //----------------------------------------------------------------------- |
| 334 | /** |
| 335 | * Append a field prefix which applies only to the next appended field. If |
| 336 | * the field is not printed, neither is the prefix. |
| 337 | * |
| 338 | * @param text text to print before field only if field is printed |
| 339 | * @return this PeriodFormatterBuilder |
| 340 | * @see #appendSuffix |
| 341 | */ |
| 342 | public PeriodFormatterBuilder appendPrefix(String text) { |
| 343 | if (text == null) { |
| 344 | throw new IllegalArgumentException(); |
| 345 | } |
| 346 | return appendPrefix(new SimpleAffix(text)); |
| 347 | } |
| 348 | |
| 349 | /** |
| 350 | * Append a field prefix which applies only to the next appended field. If |
| 351 | * the field is not printed, neither is the prefix. |
| 352 | * <p> |
| 353 | * During parsing, the singular and plural versions are accepted whether |
| 354 | * or not the actual value matches plurality. |
| 355 | * |
| 356 | * @param singularText text to print if field value is one |
| 357 | * @param pluralText text to print if field value is not one |
| 358 | * @return this PeriodFormatterBuilder |
| 359 | * @see #appendSuffix |
| 360 | */ |
| 361 | public PeriodFormatterBuilder appendPrefix(String singularText, |
| 362 | String pluralText) { |
| 363 | if (singularText == null || pluralText == null) { |
| 364 | throw new IllegalArgumentException(); |
| 365 | } |
| 366 | return appendPrefix(new PluralAffix(singularText, pluralText)); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Append a field prefix which applies only to the next appended field. If |
| 371 | * the field is not printed, neither is the prefix. |
| 372 | * |
| 373 | * @param prefix custom prefix |
| 374 | * @return this PeriodFormatterBuilder |
| 375 | * @see #appendSuffix |
| 376 | */ |
| 377 | private PeriodFormatterBuilder appendPrefix(PeriodFieldAffix prefix) { |
| 378 | if (prefix == null) { |
| 379 | throw new IllegalArgumentException(); |
| 380 | } |
| 381 | if (iPrefix != null) { |
| 382 | prefix = new CompositeAffix(iPrefix, prefix); |
| 383 | } |
| 384 | iPrefix = prefix; |
| 385 | return this; |
| 386 | } |
| 387 | |
| 388 | //----------------------------------------------------------------------- |
| 389 | /** |
| 390 | * Instruct the printer to emit an integer years field, if supported. |
| 391 | * <p> |
| 392 | * The number of printed and parsed digits can be controlled using |
| 393 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 394 | * |
| 395 | * @return this PeriodFormatterBuilder |
| 396 | */ |
| 397 | public PeriodFormatterBuilder appendYears() { |
| 398 | appendField(YEARS); |
| 399 | return this; |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * Instruct the printer to emit an integer months field, if supported. |
| 404 | * <p> |
| 405 | * The number of printed and parsed digits can be controlled using |
| 406 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 407 | * |
| 408 | * @return this PeriodFormatterBuilder |
| 409 | */ |
| 410 | public PeriodFormatterBuilder appendMonths() { |
| 411 | appendField(MONTHS); |
| 412 | return this; |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Instruct the printer to emit an integer weeks field, if supported. |
| 417 | * <p> |
| 418 | * The number of printed and parsed digits can be controlled using |
| 419 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 420 | * |
| 421 | * @return this PeriodFormatterBuilder |
| 422 | */ |
| 423 | public PeriodFormatterBuilder appendWeeks() { |
| 424 | appendField(WEEKS); |
| 425 | return this; |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Instruct the printer to emit an integer days field, if supported. |
| 430 | * <p> |
| 431 | * The number of printed and parsed digits can be controlled using |
| 432 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 433 | * |
| 434 | * @return this PeriodFormatterBuilder |
| 435 | */ |
| 436 | public PeriodFormatterBuilder appendDays() { |
| 437 | appendField(DAYS); |
| 438 | return this; |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * Instruct the printer to emit an integer hours field, if supported. |
| 443 | * <p> |
| 444 | * The number of printed and parsed digits can be controlled using |
| 445 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 446 | * |
| 447 | * @return this PeriodFormatterBuilder |
| 448 | */ |
| 449 | public PeriodFormatterBuilder appendHours() { |
| 450 | appendField(HOURS); |
| 451 | return this; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Instruct the printer to emit an integer minutes field, if supported. |
| 456 | * <p> |
| 457 | * The number of printed and parsed digits can be controlled using |
| 458 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 459 | * |
| 460 | * @return this PeriodFormatterBuilder |
| 461 | */ |
| 462 | public PeriodFormatterBuilder appendMinutes() { |
| 463 | appendField(MINUTES); |
| 464 | return this; |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * Instruct the printer to emit an integer seconds field, if supported. |
| 469 | * <p> |
| 470 | * The number of printed and parsed digits can be controlled using |
| 471 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 472 | * |
| 473 | * @return this PeriodFormatterBuilder |
| 474 | */ |
| 475 | public PeriodFormatterBuilder appendSeconds() { |
| 476 | appendField(SECONDS); |
| 477 | return this; |
| 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Instruct the printer to emit a combined seconds and millis field, if supported. |
| 482 | * The millis will overflow into the seconds if necessary. |
| 483 | * The millis are always output. |
| 484 | * |
| 485 | * @return this PeriodFormatterBuilder |
| 486 | */ |
| 487 | public PeriodFormatterBuilder appendSecondsWithMillis() { |
| 488 | appendField(SECONDS_MILLIS); |
| 489 | return this; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Instruct the printer to emit a combined seconds and millis field, if supported. |
| 494 | * The millis will overflow into the seconds if necessary. |
| 495 | * The millis are only output if non-zero. |
| 496 | * |
| 497 | * @return this PeriodFormatterBuilder |
| 498 | */ |
| 499 | public PeriodFormatterBuilder appendSecondsWithOptionalMillis() { |
| 500 | appendField(SECONDS_OPTIONAL_MILLIS); |
| 501 | return this; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Instruct the printer to emit an integer millis field, if supported. |
| 506 | * <p> |
| 507 | * The number of printed and parsed digits can be controlled using |
| 508 | * {@link #minimumPrintedDigits(int)} and {@link #maximumParsedDigits(int)}. |
| 509 | * |
| 510 | * @return this PeriodFormatterBuilder |
| 511 | */ |
| 512 | public PeriodFormatterBuilder appendMillis() { |
| 513 | appendField(MILLIS); |
| 514 | return this; |
| 515 | } |
| 516 | |
| 517 | /** |
| 518 | * Instruct the printer to emit an integer millis field, if supported. |
| 519 | * <p> |
| 520 | * The number of arsed digits can be controlled using {@link #maximumParsedDigits(int)}. |
| 521 | * |
| 522 | * @return this PeriodFormatterBuilder |
| 523 | */ |
| 524 | public PeriodFormatterBuilder appendMillis3Digit() { |
| 525 | appendField(7, 3); |
| 526 | return this; |
| 527 | } |
| 528 | |
| 529 | private void appendField(int type) { |
| 530 | appendField(type, iMinPrintedDigits); |
| 531 | } |
| 532 | |
| 533 | private void appendField(int type, int minPrinted) { |
| 534 | FieldFormatter field = new FieldFormatter(minPrinted, iPrintZeroSetting, |
| 535 | iMaxParsedDigits, iRejectSignedValues, type, iFieldFormatters, iPrefix, null); |
| 536 | append0(field, field); |
| 537 | iFieldFormatters[type] = field; |
| 538 | iPrefix = null; |
| 539 | } |
| 540 | |
| 541 | //----------------------------------------------------------------------- |
| 542 | /** |
| 543 | * Append a field suffix which applies only to the last appended field. If |
| 544 | * the field is not printed, neither is the suffix. |
| 545 | * |
| 546 | * @param text text to print after field only if field is printed |
| 547 | * @return this PeriodFormatterBuilder |
| 548 | * @throws IllegalStateException if no field exists to append to |
| 549 | * @see #appendPrefix |
| 550 | */ |
| 551 | public PeriodFormatterBuilder appendSuffix(String text) { |
| 552 | if (text == null) { |
| 553 | throw new IllegalArgumentException(); |
| 554 | } |
| 555 | return appendSuffix(new SimpleAffix(text)); |
| 556 | } |
| 557 | |
| 558 | /** |
| 559 | * Append a field suffix which applies only to the last appended field. If |
| 560 | * the field is not printed, neither is the suffix. |
| 561 | * <p> |
| 562 | * During parsing, the singular and plural versions are accepted whether or |
| 563 | * not the actual value matches plurality. |
| 564 | * |
| 565 | * @param singularText text to print if field value is one |
| 566 | * @param pluralText text to print if field value is not one |
| 567 | * @return this PeriodFormatterBuilder |
| 568 | * @throws IllegalStateException if no field exists to append to |
| 569 | * @see #appendPrefix |
| 570 | */ |
| 571 | public PeriodFormatterBuilder appendSuffix(String singularText, |
| 572 | String pluralText) { |
| 573 | if (singularText == null || pluralText == null) { |
| 574 | throw new IllegalArgumentException(); |
| 575 | } |
| 576 | return appendSuffix(new PluralAffix(singularText, pluralText)); |
| 577 | } |
| 578 | |
| 579 | /** |
| 580 | * Append a field suffix which applies only to the last appended field. If |
| 581 | * the field is not printed, neither is the suffix. |
| 582 | * |
| 583 | * @param suffix custom suffix |
| 584 | * @return this PeriodFormatterBuilder |
| 585 | * @throws IllegalStateException if no field exists to append to |
| 586 | * @see #appendPrefix |
| 587 | */ |
| 588 | private PeriodFormatterBuilder appendSuffix(PeriodFieldAffix suffix) { |
| 589 | final Object originalPrinter; |
| 590 | final Object originalParser; |
| 591 | if (iElementPairs.size() > 0) { |
| 592 | originalPrinter = iElementPairs.get(iElementPairs.size() - 2); |
| 593 | originalParser = iElementPairs.get(iElementPairs.size() - 1); |
| 594 | } else { |
| 595 | originalPrinter = null; |
| 596 | originalParser = null; |
| 597 | } |
| 598 | |
| 599 | if (originalPrinter == null || originalParser == null || |
| 600 | originalPrinter != originalParser || |
| 601 | !(originalPrinter instanceof FieldFormatter)) { |
| 602 | throw new IllegalStateException("No field to apply suffix to"); |
| 603 | } |
| 604 | |
| 605 | clearPrefix(); |
| 606 | FieldFormatter newField = new FieldFormatter((FieldFormatter) originalPrinter, suffix); |
| 607 | iElementPairs.set(iElementPairs.size() - 2, newField); |
| 608 | iElementPairs.set(iElementPairs.size() - 1, newField); |
| 609 | iFieldFormatters[newField.getFieldType()] = newField; |
| 610 | |
| 611 | return this; |
| 612 | } |
| 613 | |
| 614 | //----------------------------------------------------------------------- |
| 615 | /** |
| 616 | * Append a separator, which is output if fields are printed both before |
| 617 | * and after the separator. |
| 618 | * <p> |
| 619 | * For example, <code>builder.appendDays().appendSeparator(",").appendHours()</code> |
| 620 | * will only output the comma if both the days and hours fields are output. |
| 621 | * <p> |
| 622 | * The text will be parsed case-insensitively. |
| 623 | * <p> |
| 624 | * Note: appending a separator discontinues any further work on the latest |
| 625 | * appended field. |
| 626 | * |
| 627 | * @param text the text to use as a separator |
| 628 | * @return this PeriodFormatterBuilder |
| 629 | * @throws IllegalStateException if this separator follows a previous one |
| 630 | */ |
| 631 | public PeriodFormatterBuilder appendSeparator(String text) { |
| 632 | return appendSeparator(text, text, null, true, true); |
| 633 | } |
| 634 | |
| 635 | /** |
| 636 | * Append a separator, which is output only if fields are printed after the separator. |
| 637 | * <p> |
| 638 | * For example, |
| 639 | * <code>builder.appendDays().appendSeparatorIfFieldsAfter(",").appendHours()</code> |
| 640 | * will only output the comma if the hours fields is output. |
| 641 | * <p> |
| 642 | * The text will be parsed case-insensitively. |
| 643 | * <p> |
| 644 | * Note: appending a separator discontinues any further work on the latest |
| 645 | * appended field. |
| 646 | * |
| 647 | * @param text the text to use as a separator |
| 648 | * @return this PeriodFormatterBuilder |
| 649 | * @throws IllegalStateException if this separator follows a previous one |
| 650 | */ |
| 651 | public PeriodFormatterBuilder appendSeparatorIfFieldsAfter(String text) { |
| 652 | return appendSeparator(text, text, null, false, true); |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Append a separator, which is output only if fields are printed before the separator. |
| 657 | * <p> |
| 658 | * For example, |
| 659 | * <code>builder.appendDays().appendSeparatorIfFieldsBefore(",").appendHours()</code> |
| 660 | * will only output the comma if the days fields is output. |
| 661 | * <p> |
| 662 | * The text will be parsed case-insensitively. |
| 663 | * <p> |
| 664 | * Note: appending a separator discontinues any further work on the latest |
| 665 | * appended field. |
| 666 | * |
| 667 | * @param text the text to use as a separator |
| 668 | * @return this PeriodFormatterBuilder |
| 669 | * @throws IllegalStateException if this separator follows a previous one |
| 670 | */ |
| 671 | public PeriodFormatterBuilder appendSeparatorIfFieldsBefore(String text) { |
| 672 | return appendSeparator(text, text, null, true, false); |
| 673 | } |
| 674 | |
| 675 | /** |
| 676 | * Append a separator, which is output if fields are printed both before |
| 677 | * and after the separator. |
| 678 | * <p> |
| 679 | * This method changes the separator depending on whether it is the last separator |
| 680 | * to be output. |
| 681 | * <p> |
| 682 | * For example, <code>builder.appendDays().appendSeparator(",", "&").appendHours().appendSeparator(",", "&").appendMinutes()</code> |
| 683 | * will output '1,2&3' if all three fields are output, '1&2' if two fields are output |
| 684 | * and '1' if just one field is output. |
| 685 | * <p> |
| 686 | * The text will be parsed case-insensitively. |
| 687 | * <p> |
| 688 | * Note: appending a separator discontinues any further work on the latest |
| 689 | * appended field. |
| 690 | * |
| 691 | * @param text the text to use as a separator |
| 692 | * @param finalText the text used used if this is the final separator to be printed |
| 693 | * @return this PeriodFormatterBuilder |
| 694 | * @throws IllegalStateException if this separator follows a previous one |
| 695 | */ |
| 696 | public PeriodFormatterBuilder appendSeparator(String text, String finalText) { |
| 697 | return appendSeparator(text, finalText, null, true, true); |
| 698 | } |
| 699 | |
| 700 | /** |
| 701 | * Append a separator, which is output if fields are printed both before |
| 702 | * and after the separator. |
| 703 | * <p> |
| 704 | * This method changes the separator depending on whether it is the last separator |
| 705 | * to be output. |
| 706 | * <p> |
| 707 | * For example, <code>builder.appendDays().appendSeparator(",", "&").appendHours().appendSeparator(",", "&").appendMinutes()</code> |
| 708 | * will output '1,2&3' if all three fields are output, '1&2' if two fields are output |
| 709 | * and '1' if just one field is output. |
| 710 | * <p> |
| 711 | * The text will be parsed case-insensitively. |
| 712 | * <p> |
| 713 | * Note: appending a separator discontinues any further work on the latest |
| 714 | * appended field. |
| 715 | * |
| 716 | * @param text the text to use as a separator |
| 717 | * @param finalText the text used used if this is the final separator to be printed |
| 718 | * @param variants set of text values which are also acceptable when parsed |
| 719 | * @return this PeriodFormatterBuilder |
| 720 | * @throws IllegalStateException if this separator follows a previous one |
| 721 | */ |
| 722 | public PeriodFormatterBuilder appendSeparator(String text, String finalText, |
| 723 | String[] variants) { |
| 724 | return appendSeparator(text, finalText, variants, true, true); |
| 725 | } |
| 726 | |
| 727 | private PeriodFormatterBuilder appendSeparator(String text, String finalText, |
| 728 | String[] variants, |
| 729 | boolean useBefore, boolean useAfter) { |
| 730 | if (text == null || finalText == null) { |
| 731 | throw new IllegalArgumentException(); |
| 732 | } |
| 733 | |
| 734 | clearPrefix(); |
| 735 | |
| 736 | // optimise zero formatter case |
| 737 | List pairs = iElementPairs; |
| 738 | if (pairs.size() == 0) { |
| 739 | if (useAfter && useBefore == false) { |
| 740 | Separator separator = new Separator( |
| 741 | text, finalText, variants, |
| 742 | Literal.EMPTY, Literal.EMPTY, useBefore, useAfter); |
| 743 | append0(separator, separator); |
| 744 | } |
| 745 | return this; |
| 746 | } |
| 747 | |
| 748 | // find the last separator added |
| 749 | int i; |
| 750 | Separator lastSeparator = null; |
| 751 | for (i=pairs.size(); --i>=0; ) { |
| 752 | if (pairs.get(i) instanceof Separator) { |
| 753 | lastSeparator = (Separator) pairs.get(i); |
| 754 | pairs = pairs.subList(i + 1, pairs.size()); |
| 755 | break; |
| 756 | } |
| 757 | i--; // element pairs |
| 758 | } |
| 759 | |
| 760 | // merge formatters |
| 761 | if (lastSeparator != null && pairs.size() == 0) { |
| 762 | throw new IllegalStateException("Cannot have two adjacent separators"); |
| 763 | } else { |
| 764 | Object[] comp = createComposite(pairs); |
| 765 | pairs.clear(); |
| 766 | Separator separator = new Separator( |
| 767 | text, finalText, variants, |
| 768 | (PeriodPrinter) comp[0], (PeriodParser) comp[1], |
| 769 | useBefore, useAfter); |
| 770 | pairs.add(separator); |
| 771 | pairs.add(separator); |
| 772 | } |
| 773 | |
| 774 | return this; |
| 775 | } |
| 776 | |
| 777 | //----------------------------------------------------------------------- |
| 778 | private void clearPrefix() throws IllegalStateException { |
| 779 | if (iPrefix != null) { |
| 780 | throw new IllegalStateException("Prefix not followed by field"); |
| 781 | } |
| 782 | iPrefix = null; |
| 783 | } |
| 784 | |
| 785 | private PeriodFormatterBuilder append0(PeriodPrinter printer, PeriodParser parser) { |
| 786 | iElementPairs.add(printer); |
| 787 | iElementPairs.add(parser); |
| 788 | iNotPrinter |= (printer == null); |
| 789 | iNotParser |= (parser == null); |
| 790 | return this; |
| 791 | } |
| 792 | |
| 793 | //----------------------------------------------------------------------- |
| 794 | private static PeriodFormatter toFormatter(List elementPairs, boolean notPrinter, boolean notParser) { |
| 795 | if (notPrinter && notParser) { |
| 796 | throw new IllegalStateException("Builder has created neither a printer nor a parser"); |
| 797 | } |
| 798 | int size = elementPairs.size(); |
| 799 | if (size >= 2 && elementPairs.get(0) instanceof Separator) { |
| 800 | Separator sep = (Separator) elementPairs.get(0); |
| 801 | PeriodFormatter f = toFormatter(elementPairs.subList(2, size), notPrinter, notParser); |
| 802 | sep = sep.finish(f.getPrinter(), f.getParser()); |
| 803 | return new PeriodFormatter(sep, sep); |
| 804 | } |
| 805 | Object[] comp = createComposite(elementPairs); |
| 806 | if (notPrinter) { |
| 807 | return new PeriodFormatter(null, (PeriodParser) comp[1]); |
| 808 | } else if (notParser) { |
| 809 | return new PeriodFormatter((PeriodPrinter) comp[0], null); |
| 810 | } else { |
| 811 | return new PeriodFormatter((PeriodPrinter) comp[0], (PeriodParser) comp[1]); |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | private static Object[] createComposite(List elementPairs) { |
| 816 | switch (elementPairs.size()) { |
| 817 | case 0: |
| 818 | return new Object[] {Literal.EMPTY, Literal.EMPTY}; |
| 819 | case 1: |
| 820 | return new Object[] {elementPairs.get(0), elementPairs.get(1)}; |
| 821 | default: |
| 822 | Composite comp = new Composite(elementPairs); |
| 823 | return new Object[] {comp, comp}; |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | //----------------------------------------------------------------------- |
| 828 | /** |
| 829 | * Defines a formatted field's prefix or suffix text. |
| 830 | * This can be used for fields such as 'n hours' or 'nH' or 'Hour:n'. |
| 831 | */ |
| 832 | static interface PeriodFieldAffix { |
| 833 | int calculatePrintedLength(int value); |
| 834 | |
| 835 | void printTo(StringBuffer buf, int value); |
| 836 | |
| 837 | void printTo(Writer out, int value) throws IOException; |
| 838 | |
| 839 | /** |
| 840 | * @return new position after parsing affix, or ~position of failure |
| 841 | */ |
| 842 | int parse(String periodStr, int position); |
| 843 | |
| 844 | /** |
| 845 | * @return position where affix starts, or original ~position if not found |
| 846 | */ |
| 847 | int scan(String periodStr, int position); |
| 848 | } |
| 849 | |
| 850 | //----------------------------------------------------------------------- |
| 851 | /** |
| 852 | * Implements an affix where the text does not vary by the amount. |
| 853 | */ |
| 854 | static class SimpleAffix implements PeriodFieldAffix { |
| 855 | private final String iText; |
| 856 | |
| 857 | SimpleAffix(String text) { |
| 858 | iText = text; |
| 859 | } |
| 860 | |
| 861 | public int calculatePrintedLength(int value) { |
| 862 | return iText.length(); |
| 863 | } |
| 864 | |
| 865 | public void printTo(StringBuffer buf, int value) { |
| 866 | buf.append(iText); |
| 867 | } |
| 868 | |
| 869 | public void printTo(Writer out, int value) throws IOException { |
| 870 | out.write(iText); |
| 871 | } |
| 872 | |
| 873 | public int parse(String periodStr, int position) { |
| 874 | String text = iText; |
| 875 | int textLength = text.length(); |
| 876 | if (periodStr.regionMatches(true, position, text, 0, textLength)) { |
| 877 | return position + textLength; |
| 878 | } |
| 879 | return ~position; |
| 880 | } |
| 881 | |
| 882 | public int scan(String periodStr, final int position) { |
| 883 | String text = iText; |
| 884 | int textLength = text.length(); |
| 885 | int sourceLength = periodStr.length(); |
| 886 | search: |
| 887 | for (int pos = position; pos < sourceLength; pos++) { |
| 888 | if (periodStr.regionMatches(true, pos, text, 0, textLength)) { |
| 889 | return pos; |
| 890 | } |
| 891 | // Only allow number characters to be skipped in search of suffix. |
| 892 | switch (periodStr.charAt(pos)) { |
| 893 | case '0': case '1': case '2': case '3': case '4': |
| 894 | case '5': case '6': case '7': case '8': case '9': |
| 895 | case '.': case ',': case '+': case '-': |
| 896 | break; |
| 897 | default: |
| 898 | break search; |
| 899 | } |
| 900 | } |
| 901 | return ~position; |
| 902 | } |
| 903 | } |
| 904 | |
| 905 | //----------------------------------------------------------------------- |
| 906 | /** |
| 907 | * Implements an affix where the text varies by the amount of the field. |
| 908 | * Only singular (1) and plural (not 1) are supported. |
| 909 | */ |
| 910 | static class PluralAffix implements PeriodFieldAffix { |
| 911 | private final String iSingularText; |
| 912 | private final String iPluralText; |
| 913 | |
| 914 | PluralAffix(String singularText, String pluralText) { |
| 915 | iSingularText = singularText; |
| 916 | iPluralText = pluralText; |
| 917 | } |
| 918 | |
| 919 | public int calculatePrintedLength(int value) { |
| 920 | return (value == 1 ? iSingularText : iPluralText).length(); |
| 921 | } |
| 922 | |
| 923 | public void printTo(StringBuffer buf, int value) { |
| 924 | buf.append(value == 1 ? iSingularText : iPluralText); |
| 925 | } |
| 926 | |
| 927 | public void printTo(Writer out, int value) throws IOException { |
| 928 | out.write(value == 1 ? iSingularText : iPluralText); |
| 929 | } |
| 930 | |
| 931 | public int parse(String periodStr, int position) { |
| 932 | String text1 = iPluralText; |
| 933 | String text2 = iSingularText; |
| 934 | |
| 935 | if (text1.length() < text2.length()) { |
| 936 | // Swap in order to match longer one first. |
| 937 | String temp = text1; |
| 938 | text1 = text2; |
| 939 | text2 = temp; |
| 940 | } |
| 941 | |
| 942 | if (periodStr.regionMatches |
| 943 | (true, position, text1, 0, text1.length())) { |
| 944 | return position + text1.length(); |
| 945 | } |
| 946 | if (periodStr.regionMatches |
| 947 | (true, position, text2, 0, text2.length())) { |
| 948 | return position + text2.length(); |
| 949 | } |
| 950 | |
| 951 | return ~position; |
| 952 | } |
| 953 | |
| 954 | public int scan(String periodStr, final int position) { |
| 955 | String text1 = iPluralText; |
| 956 | String text2 = iSingularText; |
| 957 | |
| 958 | if (text1.length() < text2.length()) { |
| 959 | // Swap in order to match longer one first. |
| 960 | String temp = text1; |
| 961 | text1 = text2; |
| 962 | text2 = temp; |
| 963 | } |
| 964 | |
| 965 | int textLength1 = text1.length(); |
| 966 | int textLength2 = text2.length(); |
| 967 | |
| 968 | int sourceLength = periodStr.length(); |
| 969 | for (int pos = position; pos < sourceLength; pos++) { |
| 970 | if (periodStr.regionMatches(true, pos, text1, 0, textLength1)) { |
| 971 | return pos; |
| 972 | } |
| 973 | if (periodStr.regionMatches(true, pos, text2, 0, textLength2)) { |
| 974 | return pos; |
| 975 | } |
| 976 | } |
| 977 | return ~position; |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | //----------------------------------------------------------------------- |
| 982 | /** |
| 983 | * Builds a composite affix by merging two other affix implementations. |
| 984 | */ |
| 985 | static class CompositeAffix implements PeriodFieldAffix { |
| 986 | private final PeriodFieldAffix iLeft; |
| 987 | private final PeriodFieldAffix iRight; |
| 988 | |
| 989 | CompositeAffix(PeriodFieldAffix left, PeriodFieldAffix right) { |
| 990 | iLeft = left; |
| 991 | iRight = right; |
| 992 | } |
| 993 | |
| 994 | public int calculatePrintedLength(int value) { |
| 995 | return iLeft.calculatePrintedLength(value) |
| 996 | + iRight.calculatePrintedLength(value); |
| 997 | } |
| 998 | |
| 999 | public void printTo(StringBuffer buf, int value) { |
| 1000 | iLeft.printTo(buf, value); |
| 1001 | iRight.printTo(buf, value); |
| 1002 | } |
| 1003 | |
| 1004 | public void printTo(Writer out, int value) throws IOException { |
| 1005 | iLeft.printTo(out, value); |
| 1006 | iRight.printTo(out, value); |
| 1007 | } |
| 1008 | |
| 1009 | public int parse(String periodStr, int position) { |
| 1010 | position = iLeft.parse(periodStr, position); |
| 1011 | if (position >= 0) { |
| 1012 | position = iRight.parse(periodStr, position); |
| 1013 | } |
| 1014 | return position; |
| 1015 | } |
| 1016 | |
| 1017 | public int scan(String periodStr, final int position) { |
| 1018 | int pos = iLeft.scan(periodStr, position); |
| 1019 | if (pos >= 0) { |
| 1020 | return iRight.scan(periodStr, pos); |
| 1021 | } |
| 1022 | return ~position; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | //----------------------------------------------------------------------- |
| 1027 | /** |
| 1028 | * Formats the numeric value of a field, potentially with prefix/suffix. |
| 1029 | */ |
| 1030 | static class FieldFormatter |
| 1031 | implements PeriodPrinter, PeriodParser { |
| 1032 | private final int iMinPrintedDigits; |
| 1033 | private final int iPrintZeroSetting; |
| 1034 | private final int iMaxParsedDigits; |
| 1035 | private final boolean iRejectSignedValues; |
| 1036 | |
| 1037 | /** The index of the field type, 0=year, etc. */ |
| 1038 | private final int iFieldType; |
| 1039 | /** |
| 1040 | * The array of the latest formatter added for each type. |
| 1041 | * This is shared between all the field formatters in a formatter. |
| 1042 | */ |
| 1043 | private final FieldFormatter[] iFieldFormatters; |
| 1044 | |
| 1045 | private final PeriodFieldAffix iPrefix; |
| 1046 | private final PeriodFieldAffix iSuffix; |
| 1047 | |
| 1048 | FieldFormatter(int minPrintedDigits, int printZeroSetting, |
| 1049 | int maxParsedDigits, boolean rejectSignedValues, |
| 1050 | int fieldType, FieldFormatter[] fieldFormatters, |
| 1051 | PeriodFieldAffix prefix, PeriodFieldAffix suffix) { |
| 1052 | iMinPrintedDigits = minPrintedDigits; |
| 1053 | iPrintZeroSetting = printZeroSetting; |
| 1054 | iMaxParsedDigits = maxParsedDigits; |
| 1055 | iRejectSignedValues = rejectSignedValues; |
| 1056 | iFieldType = fieldType; |
| 1057 | iFieldFormatters = fieldFormatters; |
| 1058 | iPrefix = prefix; |
| 1059 | iSuffix = suffix; |
| 1060 | } |
| 1061 | |
| 1062 | FieldFormatter(FieldFormatter field, PeriodFieldAffix suffix) { |
| 1063 | iMinPrintedDigits = field.iMinPrintedDigits; |
| 1064 | iPrintZeroSetting = field.iPrintZeroSetting; |
| 1065 | iMaxParsedDigits = field.iMaxParsedDigits; |
| 1066 | iRejectSignedValues = field.iRejectSignedValues; |
| 1067 | iFieldType = field.iFieldType; |
| 1068 | iFieldFormatters = field.iFieldFormatters; |
| 1069 | iPrefix = field.iPrefix; |
| 1070 | if (field.iSuffix != null) { |
| 1071 | suffix = new CompositeAffix(field.iSuffix, suffix); |
| 1072 | } |
| 1073 | iSuffix = suffix; |
| 1074 | } |
| 1075 | |
| 1076 | public int countFieldsToPrint(ReadablePeriod period, int stopAt, Locale locale) { |
| 1077 | if (stopAt <= 0) { |
| 1078 | return 0; |
| 1079 | } |
| 1080 | if (iPrintZeroSetting == PRINT_ZERO_ALWAYS || getFieldValue(period) != Long.MAX_VALUE) { |
| 1081 | return 1; |
| 1082 | } |
| 1083 | return 0; |
| 1084 | } |
| 1085 | |
| 1086 | public int calculatePrintedLength(ReadablePeriod period, Locale locale) { |
| 1087 | long valueLong = getFieldValue(period); |
| 1088 | if (valueLong == Long.MAX_VALUE) { |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | int sum = Math.max(FormatUtils.calculateDigitCount(valueLong), iMinPrintedDigits); |
| 1093 | if (iFieldType >= SECONDS_MILLIS) { |
| 1094 | // valueLong contains the seconds and millis fields |
| 1095 | // the minimum output is 0.000, which is 4 digits |
| 1096 | sum = Math.max(sum, 4); |
| 1097 | // plus one for the decimal point |
| 1098 | sum++; |
| 1099 | if (iFieldType == SECONDS_OPTIONAL_MILLIS && |
| 1100 | (Math.abs(valueLong) % DateTimeConstants.MILLIS_PER_SECOND) == 0) { |
| 1101 | sum -= 4; // remove three digits and decimal point |
| 1102 | } |
| 1103 | // reset valueLong to refer to the seconds part for the prefic/suffix calculation |
| 1104 | valueLong = valueLong / DateTimeConstants.MILLIS_PER_SECOND; |
| 1105 | } |
| 1106 | int value = (int) valueLong; |
| 1107 | |
| 1108 | if (iPrefix != null) { |
| 1109 | sum += iPrefix.calculatePrintedLength(value); |
| 1110 | } |
| 1111 | if (iSuffix != null) { |
| 1112 | sum += iSuffix.calculatePrintedLength(value); |
| 1113 | } |
| 1114 | |
| 1115 | return sum; |
| 1116 | } |
| 1117 | |
| 1118 | public void printTo(StringBuffer buf, ReadablePeriod period, Locale locale) { |
| 1119 | long valueLong = getFieldValue(period); |
| 1120 | if (valueLong == Long.MAX_VALUE) { |
| 1121 | return; |
| 1122 | } |
| 1123 | int value = (int) valueLong; |
| 1124 | if (iFieldType >= SECONDS_MILLIS) { |
| 1125 | value = (int) (valueLong / DateTimeConstants.MILLIS_PER_SECOND); |
| 1126 | } |
| 1127 | |
| 1128 | if (iPrefix != null) { |
| 1129 | iPrefix.printTo(buf, value); |
| 1130 | } |
| 1131 | int minDigits = iMinPrintedDigits; |
| 1132 | if (minDigits <= 1) { |
| 1133 | FormatUtils.appendUnpaddedInteger(buf, value); |
| 1134 | } else { |
| 1135 | FormatUtils.appendPaddedInteger(buf, value, minDigits); |
| 1136 | } |
| 1137 | if (iFieldType >= SECONDS_MILLIS) { |
| 1138 | int dp = (int) (Math.abs(valueLong) % DateTimeConstants.MILLIS_PER_SECOND); |
| 1139 | if (iFieldType == SECONDS_MILLIS || dp > 0) { |
| 1140 | buf.append('.'); |
| 1141 | FormatUtils.appendPaddedInteger(buf, dp, 3); |
| 1142 | } |
| 1143 | } |
| 1144 | if (iSuffix != null) { |
| 1145 | iSuffix.printTo(buf, value); |
| 1146 | } |
| 1147 | } |
| 1148 | |
| 1149 | public void printTo(Writer out, ReadablePeriod period, Locale locale) throws IOException { |
| 1150 | long valueLong = getFieldValue(period); |
| 1151 | if (valueLong == Long.MAX_VALUE) { |
| 1152 | return; |
| 1153 | } |
| 1154 | int value = (int) valueLong; |
| 1155 | if (iFieldType >= SECONDS_MILLIS) { |
| 1156 | value = (int) (valueLong / DateTimeConstants.MILLIS_PER_SECOND); |
| 1157 | } |
| 1158 | |
| 1159 | if (iPrefix != null) { |
| 1160 | iPrefix.printTo(out, value); |
| 1161 | } |
| 1162 | int minDigits = iMinPrintedDigits; |
| 1163 | if (minDigits <= 1) { |
| 1164 | FormatUtils.writeUnpaddedInteger(out, value); |
| 1165 | } else { |
| 1166 | FormatUtils.writePaddedInteger(out, value, minDigits); |
| 1167 | } |
| 1168 | if (iFieldType >= SECONDS_MILLIS) { |
| 1169 | int dp = (int) (Math.abs(valueLong) % DateTimeConstants.MILLIS_PER_SECOND); |
| 1170 | if (iFieldType == SECONDS_MILLIS || dp > 0) { |
| 1171 | out.write('.'); |
| 1172 | FormatUtils.writePaddedInteger(out, dp, 3); |
| 1173 | } |
| 1174 | } |
| 1175 | if (iSuffix != null) { |
| 1176 | iSuffix.printTo(out, value); |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | public int parseInto( |
| 1181 | ReadWritablePeriod period, String text, |
| 1182 | int position, Locale locale) { |
| 1183 | |
| 1184 | boolean mustParse = (iPrintZeroSetting == PRINT_ZERO_ALWAYS); |
| 1185 | |
| 1186 | // Shortcut test. |
| 1187 | if (position >= text.length()) { |
| 1188 | return mustParse ? ~position : position; |
| 1189 | } |
| 1190 | |
| 1191 | if (iPrefix != null) { |
| 1192 | position = iPrefix.parse(text, position); |
| 1193 | if (position >= 0) { |
| 1194 | // If prefix is found, then the parse must finish. |
| 1195 | mustParse = true; |
| 1196 | } else { |
| 1197 | // Prefix not found, so bail. |
| 1198 | if (!mustParse) { |
| 1199 | // It's okay because parsing of this field is not |
| 1200 | // required. Don't return an error. Fields down the |
| 1201 | // chain can continue on, trying to parse. |
| 1202 | return ~position; |
| 1203 | } |
| 1204 | return position; |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | int suffixPos = -1; |
| 1209 | if (iSuffix != null && !mustParse) { |
| 1210 | // Pre-scan the suffix, to help determine if this field must be |
| 1211 | // parsed. |
| 1212 | suffixPos = iSuffix.scan(text, position); |
| 1213 | if (suffixPos >= 0) { |
| 1214 | // If suffix is found, then parse must finish. |
| 1215 | mustParse = true; |
| 1216 | } else { |
| 1217 | // Suffix not found, so bail. |
| 1218 | if (!mustParse) { |
| 1219 | // It's okay because parsing of this field is not |
| 1220 | // required. Don't return an error. Fields down the |
| 1221 | // chain can continue on, trying to parse. |
| 1222 | return ~suffixPos; |
| 1223 | } |
| 1224 | return suffixPos; |
| 1225 | } |
| 1226 | } |
| 1227 | |
| 1228 | if (!mustParse && !isSupported(period.getPeriodType(), iFieldType)) { |
| 1229 | // If parsing is not required and the field is not supported, |
| 1230 | // exit gracefully so that another parser can continue on. |
| 1231 | return position; |
| 1232 | } |
| 1233 | |
| 1234 | int limit; |
| 1235 | if (suffixPos > 0) { |
| 1236 | limit = Math.min(iMaxParsedDigits, suffixPos - position); |
| 1237 | } else { |
| 1238 | limit = Math.min(iMaxParsedDigits, text.length() - position); |
| 1239 | } |
| 1240 | |
| 1241 | // validate input number |
| 1242 | int length = 0; |
| 1243 | int fractPos = -1; |
| 1244 | boolean hasDigits = false; |
| 1245 | while (length < limit) { |
| 1246 | char c = text.charAt(position + length); |
| 1247 | // leading sign |
| 1248 | if (length == 0 && (c == '-' || c == '+') && !iRejectSignedValues) { |
| 1249 | boolean negative = c == '-'; |
| 1250 | |
| 1251 | // Next character must be a digit. |
| 1252 | if (length + 1 >= limit || |
| 1253 | (c = text.charAt(position + length + 1)) < '0' || c > '9') |
| 1254 | { |
| 1255 | break; |
| 1256 | } |
| 1257 | |
| 1258 | if (negative) { |
| 1259 | length++; |
| 1260 | } else { |
| 1261 | // Skip the '+' for parseInt to succeed. |
| 1262 | position++; |
| 1263 | } |
| 1264 | // Expand the limit to disregard the sign character. |
| 1265 | limit = Math.min(limit + 1, text.length() - position); |
| 1266 | continue; |
| 1267 | } |
| 1268 | // main number |
| 1269 | if (c >= '0' && c <= '9') { |
| 1270 | hasDigits = true; |
| 1271 | } else { |
| 1272 | if ((c == '.' || c == ',') |
| 1273 | && (iFieldType == SECONDS_MILLIS || iFieldType == SECONDS_OPTIONAL_MILLIS)) { |
| 1274 | if (fractPos >= 0) { |
| 1275 | // can't have two decimals |
| 1276 | break; |
| 1277 | } |
| 1278 | fractPos = position + length + 1; |
| 1279 | // Expand the limit to disregard the decimal point. |
| 1280 | limit = Math.min(limit + 1, text.length() - position); |
| 1281 | } else { |
| 1282 | break; |
| 1283 | } |
| 1284 | } |
| 1285 | length++; |
| 1286 | } |
| 1287 | |
| 1288 | if (!hasDigits) { |
| 1289 | return ~position; |
| 1290 | } |
| 1291 | |
| 1292 | if (suffixPos >= 0 && position + length != suffixPos) { |
| 1293 | // If there are additional non-digit characters before the |
| 1294 | // suffix is reached, then assume that the suffix found belongs |
| 1295 | // to a field not yet reached. Return original position so that |
| 1296 | // another parser can continue on. |
| 1297 | return position; |
| 1298 | } |
| 1299 | |
| 1300 | if (iFieldType != SECONDS_MILLIS && iFieldType != SECONDS_OPTIONAL_MILLIS) { |
| 1301 | // Handle common case. |
| 1302 | setFieldValue(period, iFieldType, parseInt(text, position, length)); |
| 1303 | } else if (fractPos < 0) { |
| 1304 | setFieldValue(period, SECONDS, parseInt(text, position, length)); |
| 1305 | setFieldValue(period, MILLIS, 0); |
| 1306 | } else { |
| 1307 | int wholeValue = parseInt(text, position, fractPos - position - 1); |
| 1308 | setFieldValue(period, SECONDS, wholeValue); |
| 1309 | |
| 1310 | int fractLen = position + length - fractPos; |
| 1311 | int fractValue; |
| 1312 | if (fractLen <= 0) { |
| 1313 | fractValue = 0; |
| 1314 | } else { |
| 1315 | if (fractLen >= 3) { |
| 1316 | fractValue = parseInt(text, fractPos, 3); |
| 1317 | } else { |
| 1318 | fractValue = parseInt(text, fractPos, fractLen); |
| 1319 | if (fractLen == 1) { |
| 1320 | fractValue *= 100; |
| 1321 | } else { |
| 1322 | fractValue *= 10; |
| 1323 | } |
| 1324 | } |
| 1325 | if (wholeValue < 0) { |
| 1326 | fractValue = -fractValue; |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | setFieldValue(period, MILLIS, fractValue); |
| 1331 | } |
| 1332 | |
| 1333 | position += length; |
| 1334 | |
| 1335 | if (position >= 0 && iSuffix != null) { |
| 1336 | position = iSuffix.parse(text, position); |
| 1337 | } |
| 1338 | |
| 1339 | return position; |
| 1340 | } |
| 1341 | |
| 1342 | /** |
| 1343 | * @param text text to parse |
| 1344 | * @param position position in text |
| 1345 | * @param length exact count of characters to parse |
| 1346 | * @return parsed int value |
| 1347 | */ |
| 1348 | private int parseInt(String text, int position, int length) { |
| 1349 | if (length >= 10) { |
| 1350 | // Since value may exceed max, use stock parser which checks for this. |
| 1351 | return Integer.parseInt(text.substring(position, position + length)); |
| 1352 | } |
| 1353 | if (length <= 0) { |
| 1354 | return 0; |
| 1355 | } |
| 1356 | int value = text.charAt(position++); |
| 1357 | length--; |
| 1358 | boolean negative; |
| 1359 | if (value == '-') { |
| 1360 | if (--length < 0) { |
| 1361 | return 0; |
| 1362 | } |
| 1363 | negative = true; |
| 1364 | value = text.charAt(position++); |
| 1365 | } else { |
| 1366 | negative = false; |
| 1367 | } |
| 1368 | value -= '0'; |
| 1369 | while (length-- > 0) { |
| 1370 | value = ((value << 3) + (value << 1)) + text.charAt(position++) - '0'; |
| 1371 | } |
| 1372 | return negative ? -value : value; |
| 1373 | } |
| 1374 | |
| 1375 | /** |
| 1376 | * @return Long.MAX_VALUE if nothing to print, otherwise value |
| 1377 | */ |
| 1378 | long getFieldValue(ReadablePeriod period) { |
| 1379 | PeriodType type; |
| 1380 | if (iPrintZeroSetting == PRINT_ZERO_ALWAYS) { |
| 1381 | type = null; // Don't need to check if supported. |
| 1382 | } else { |
| 1383 | type = period.getPeriodType(); |
| 1384 | } |
| 1385 | if (type != null && isSupported(type, iFieldType) == false) { |
| 1386 | return Long.MAX_VALUE; |
| 1387 | } |
| 1388 | |
| 1389 | long value; |
| 1390 | |
| 1391 | switch (iFieldType) { |
| 1392 | default: |
| 1393 | return Long.MAX_VALUE; |
| 1394 | case YEARS: |
| 1395 | value = period.get(DurationFieldType.years()); |
| 1396 | break; |
| 1397 | case MONTHS: |
| 1398 | value = period.get(DurationFieldType.months()); |
| 1399 | break; |
| 1400 | case WEEKS: |
| 1401 | value = period.get(DurationFieldType.weeks()); |
| 1402 | break; |
| 1403 | case DAYS: |
| 1404 | value = period.get(DurationFieldType.days()); |
| 1405 | break; |
| 1406 | case HOURS: |
| 1407 | value = period.get(DurationFieldType.hours()); |
| 1408 | break; |
| 1409 | case MINUTES: |
| 1410 | value = period.get(DurationFieldType.minutes()); |
| 1411 | break; |
| 1412 | case SECONDS: |
| 1413 | value = period.get(DurationFieldType.seconds()); |
| 1414 | break; |
| 1415 | case MILLIS: |
| 1416 | value = period.get(DurationFieldType.millis()); |
| 1417 | break; |
| 1418 | case SECONDS_MILLIS: // drop through |
| 1419 | case SECONDS_OPTIONAL_MILLIS: |
| 1420 | int seconds = period.get(DurationFieldType.seconds()); |
| 1421 | int millis = period.get(DurationFieldType.millis()); |
| 1422 | value = (seconds * (long) DateTimeConstants.MILLIS_PER_SECOND) + millis; |
| 1423 | break; |
| 1424 | } |
| 1425 | |
| 1426 | // determine if period is zero and this is the last field |
| 1427 | if (value == 0) { |
| 1428 | switch (iPrintZeroSetting) { |
| 1429 | case PRINT_ZERO_NEVER: |
| 1430 | return Long.MAX_VALUE; |
| 1431 | case PRINT_ZERO_RARELY_LAST: |
| 1432 | if (isZero(period) && iFieldFormatters[iFieldType] == this) { |
| 1433 | for (int i = iFieldType + 1; i <= MAX_FIELD; i++) { |
| 1434 | if (isSupported(type, i) && iFieldFormatters[i] != null) { |
| 1435 | return Long.MAX_VALUE; |
| 1436 | } |
| 1437 | } |
| 1438 | } else { |
| 1439 | return Long.MAX_VALUE; |
| 1440 | } |
| 1441 | break; |
| 1442 | case PRINT_ZERO_RARELY_FIRST: |
| 1443 | if (isZero(period) && iFieldFormatters[iFieldType] == this) { |
| 1444 | int i = Math.min(iFieldType, 8); // line split out for IBM JDK |
| 1445 | i--; // see bug 1660490 |
| 1446 | for (; i >= 0 && i <= MAX_FIELD; i--) { |
| 1447 | if (isSupported(type, i) && iFieldFormatters[i] != null) { |
| 1448 | return Long.MAX_VALUE; |
| 1449 | } |
| 1450 | } |
| 1451 | } else { |
| 1452 | return Long.MAX_VALUE; |
| 1453 | } |
| 1454 | break; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | return value; |
| 1459 | } |
| 1460 | |
| 1461 | boolean isZero(ReadablePeriod period) { |
| 1462 | for (int i = 0, isize = period.size(); i < isize; i++) { |
| 1463 | if (period.getValue(i) != 0) { |
| 1464 | return false; |
| 1465 | } |
| 1466 | } |
| 1467 | return true; |
| 1468 | } |
| 1469 | |
| 1470 | boolean isSupported(PeriodType type, int field) { |
| 1471 | switch (field) { |
| 1472 | default: |
| 1473 | return false; |
| 1474 | case YEARS: |
| 1475 | return type.isSupported(DurationFieldType.years()); |
| 1476 | case MONTHS: |
| 1477 | return type.isSupported(DurationFieldType.months()); |
| 1478 | case WEEKS: |
| 1479 | return type.isSupported(DurationFieldType.weeks()); |
| 1480 | case DAYS: |
| 1481 | return type.isSupported(DurationFieldType.days()); |
| 1482 | case HOURS: |
| 1483 | return type.isSupported(DurationFieldType.hours()); |
| 1484 | case MINUTES: |
| 1485 | return type.isSupported(DurationFieldType.minutes()); |
| 1486 | case SECONDS: |
| 1487 | return type.isSupported(DurationFieldType.seconds()); |
| 1488 | case MILLIS: |
| 1489 | return type.isSupported(DurationFieldType.millis()); |
| 1490 | case SECONDS_MILLIS: // drop through |
| 1491 | case SECONDS_OPTIONAL_MILLIS: |
| 1492 | return type.isSupported(DurationFieldType.seconds()) || |
| 1493 | type.isSupported(DurationFieldType.millis()); |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | void setFieldValue(ReadWritablePeriod period, int field, int value) { |
| 1498 | switch (field) { |
| 1499 | default: |
| 1500 | break; |
| 1501 | case YEARS: |
| 1502 | period.setYears(value); |
| 1503 | break; |
| 1504 | case MONTHS: |
| 1505 | period.setMonths(value); |
| 1506 | break; |
| 1507 | case WEEKS: |
| 1508 | period.setWeeks(value); |
| 1509 | break; |
| 1510 | case DAYS: |
| 1511 | period.setDays(value); |
| 1512 | break; |
| 1513 | case HOURS: |
| 1514 | period.setHours(value); |
| 1515 | break; |
| 1516 | case MINUTES: |
| 1517 | period.setMinutes(value); |
| 1518 | break; |
| 1519 | case SECONDS: |
| 1520 | period.setSeconds(value); |
| 1521 | break; |
| 1522 | case MILLIS: |
| 1523 | period.setMillis(value); |
| 1524 | break; |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | int getFieldType() { |
| 1529 | return iFieldType; |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | //----------------------------------------------------------------------- |
| 1534 | /** |
| 1535 | * Handles a simple literal piece of text. |
| 1536 | */ |
| 1537 | static class Literal |
| 1538 | implements PeriodPrinter, PeriodParser { |
| 1539 | static final Literal EMPTY = new Literal(""); |
| 1540 | private final String iText; |
| 1541 | |
| 1542 | Literal(String text) { |
| 1543 | iText = text; |
| 1544 | } |
| 1545 | |
| 1546 | public int countFieldsToPrint(ReadablePeriod period, int stopAt, Locale locale) { |
| 1547 | return 0; |
| 1548 | } |
| 1549 | |
| 1550 | public int calculatePrintedLength(ReadablePeriod period, Locale locale) { |
| 1551 | return iText.length(); |
| 1552 | } |
| 1553 | |
| 1554 | public void printTo(StringBuffer buf, ReadablePeriod period, Locale locale) { |
| 1555 | buf.append(iText); |
| 1556 | } |
| 1557 | |
| 1558 | public void printTo(Writer out, ReadablePeriod period, Locale locale) throws IOException { |
| 1559 | out.write(iText); |
| 1560 | } |
| 1561 | |
| 1562 | public int parseInto( |
| 1563 | ReadWritablePeriod period, String periodStr, |
| 1564 | int position, Locale locale) { |
| 1565 | if (periodStr.regionMatches(true, position, iText, 0, iText.length())) { |
| 1566 | return position + iText.length(); |
| 1567 | } |
| 1568 | return ~position; |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | //----------------------------------------------------------------------- |
| 1573 | /** |
| 1574 | * Handles a separator, that splits the fields into multiple parts. |
| 1575 | * For example, the 'T' in the ISO8601 standard. |
| 1576 | */ |
| 1577 | static class Separator |
| 1578 | implements PeriodPrinter, PeriodParser { |
| 1579 | private final String iText; |
| 1580 | private final String iFinalText; |
| 1581 | private final String[] iParsedForms; |
| 1582 | |
| 1583 | private final boolean iUseBefore; |
| 1584 | private final boolean iUseAfter; |
| 1585 | |
| 1586 | private PeriodPrinter iBeforePrinter; |
| 1587 | private PeriodPrinter iAfterPrinter; |
| 1588 | private PeriodParser iBeforeParser; |
| 1589 | private PeriodParser iAfterParser; |
| 1590 | |
| 1591 | Separator(String text, String finalText, String[] variants, |
| 1592 | PeriodPrinter beforePrinter, PeriodParser beforeParser, |
| 1593 | boolean useBefore, boolean useAfter) { |
| 1594 | iText = text; |
| 1595 | iFinalText = finalText; |
| 1596 | |
| 1597 | if ((finalText == null || text.equals(finalText)) && |
| 1598 | (variants == null || variants.length == 0)) { |
| 1599 | |
| 1600 | iParsedForms = new String[] {text}; |
| 1601 | } else { |
| 1602 | // Filter and reverse sort the parsed forms. |
| 1603 | TreeSet parsedSet = new TreeSet(String.CASE_INSENSITIVE_ORDER); |
| 1604 | parsedSet.add(text); |
| 1605 | parsedSet.add(finalText); |
| 1606 | if (variants != null) { |
| 1607 | for (int i=variants.length; --i>=0; ) { |
| 1608 | parsedSet.add(variants[i]); |
| 1609 | } |
| 1610 | } |
| 1611 | ArrayList parsedList = new ArrayList(parsedSet); |
| 1612 | Collections.reverse(parsedList); |
| 1613 | iParsedForms = (String[]) parsedList.toArray(new String[parsedList.size()]); |
| 1614 | } |
| 1615 | |
| 1616 | iBeforePrinter = beforePrinter; |
| 1617 | iBeforeParser = beforeParser; |
| 1618 | iUseBefore = useBefore; |
| 1619 | iUseAfter = useAfter; |
| 1620 | } |
| 1621 | |
| 1622 | public int countFieldsToPrint(ReadablePeriod period, int stopAt, Locale locale) { |
| 1623 | int sum = iBeforePrinter.countFieldsToPrint(period, stopAt, locale); |
| 1624 | if (sum < stopAt) { |
| 1625 | sum += iAfterPrinter.countFieldsToPrint(period, stopAt, locale); |
| 1626 | } |
| 1627 | return sum; |
| 1628 | } |
| 1629 | |
| 1630 | public int calculatePrintedLength(ReadablePeriod period, Locale locale) { |
| 1631 | PeriodPrinter before = iBeforePrinter; |
| 1632 | PeriodPrinter after = iAfterPrinter; |
| 1633 | |
| 1634 | int sum = before.calculatePrintedLength(period, locale) |
| 1635 | + after.calculatePrintedLength(period, locale); |
| 1636 | |
| 1637 | if (iUseBefore) { |
| 1638 | if (before.countFieldsToPrint(period, 1, locale) > 0) { |
| 1639 | if (iUseAfter) { |
| 1640 | int afterCount = after.countFieldsToPrint(period, 2, locale); |
| 1641 | if (afterCount > 0) { |
| 1642 | sum += (afterCount > 1 ? iText : iFinalText).length(); |
| 1643 | } |
| 1644 | } else { |
| 1645 | sum += iText.length(); |
| 1646 | } |
| 1647 | } |
| 1648 | } else if (iUseAfter && after.countFieldsToPrint(period, 1, locale) > 0) { |
| 1649 | sum += iText.length(); |
| 1650 | } |
| 1651 | |
| 1652 | return sum; |
| 1653 | } |
| 1654 | |
| 1655 | public void printTo(StringBuffer buf, ReadablePeriod period, Locale locale) { |
| 1656 | PeriodPrinter before = iBeforePrinter; |
| 1657 | PeriodPrinter after = iAfterPrinter; |
| 1658 | |
| 1659 | before.printTo(buf, period, locale); |
| 1660 | if (iUseBefore) { |
| 1661 | if (before.countFieldsToPrint(period, 1, locale) > 0) { |
| 1662 | if (iUseAfter) { |
| 1663 | int afterCount = after.countFieldsToPrint(period, 2, locale); |
| 1664 | if (afterCount > 0) { |
| 1665 | buf.append(afterCount > 1 ? iText : iFinalText); |
| 1666 | } |
| 1667 | } else { |
| 1668 | buf.append(iText); |
| 1669 | } |
| 1670 | } |
| 1671 | } else if (iUseAfter && after.countFieldsToPrint(period, 1, locale) > 0) { |
| 1672 | buf.append(iText); |
| 1673 | } |
| 1674 | after.printTo(buf, period, locale); |
| 1675 | } |
| 1676 | |
| 1677 | public void printTo(Writer out, ReadablePeriod period, Locale locale) throws IOException { |
| 1678 | PeriodPrinter before = iBeforePrinter; |
| 1679 | PeriodPrinter after = iAfterPrinter; |
| 1680 | |
| 1681 | before.printTo(out, period, locale); |
| 1682 | if (iUseBefore) { |
| 1683 | if (before.countFieldsToPrint(period, 1, locale) > 0) { |
| 1684 | if (iUseAfter) { |
| 1685 | int afterCount = after.countFieldsToPrint(period, 2, locale); |
| 1686 | if (afterCount > 0) { |
| 1687 | out.write(afterCount > 1 ? iText : iFinalText); |
| 1688 | } |
| 1689 | } else { |
| 1690 | out.write(iText); |
| 1691 | } |
| 1692 | } |
| 1693 | } else if (iUseAfter && after.countFieldsToPrint(period, 1, locale) > 0) { |
| 1694 | out.write(iText); |
| 1695 | } |
| 1696 | after.printTo(out, period, locale); |
| 1697 | } |
| 1698 | |
| 1699 | public int parseInto( |
| 1700 | ReadWritablePeriod period, String periodStr, |
| 1701 | int position, Locale locale) { |
| 1702 | int oldPos = position; |
| 1703 | position = iBeforeParser.parseInto(period, periodStr, position, locale); |
| 1704 | |
| 1705 | if (position < 0) { |
| 1706 | return position; |
| 1707 | } |
| 1708 | |
| 1709 | boolean found = false; |
| 1710 | if (position > oldPos) { |
| 1711 | // Consume this separator. |
| 1712 | String[] parsedForms = iParsedForms; |
| 1713 | int length = parsedForms.length; |
| 1714 | for (int i=0; i < length; i++) { |
| 1715 | String parsedForm = parsedForms[i]; |
| 1716 | if ((parsedForm == null || parsedForm.length() == 0) || |
| 1717 | periodStr.regionMatches |
| 1718 | (true, position, parsedForm, 0, parsedForm.length())) { |
| 1719 | |
| 1720 | position += parsedForm.length(); |
| 1721 | found = true; |
| 1722 | break; |
| 1723 | } |
| 1724 | } |
| 1725 | } |
| 1726 | |
| 1727 | oldPos = position; |
| 1728 | position = iAfterParser.parseInto(period, periodStr, position, locale); |
| 1729 | |
| 1730 | if (position < 0) { |
| 1731 | return position; |
| 1732 | } |
| 1733 | |
| 1734 | if (found && position == oldPos) { |
| 1735 | // Separator should not have been supplied. |
| 1736 | return ~oldPos; |
| 1737 | } |
| 1738 | |
| 1739 | if (position > oldPos && !found && !iUseBefore) { |
| 1740 | // Separator was required. |
| 1741 | return ~oldPos; |
| 1742 | } |
| 1743 | |
| 1744 | return position; |
| 1745 | } |
| 1746 | |
| 1747 | Separator finish(PeriodPrinter afterPrinter, PeriodParser afterParser) { |
| 1748 | iAfterPrinter = afterPrinter; |
| 1749 | iAfterParser = afterParser; |
| 1750 | return this; |
| 1751 | } |
| 1752 | } |
| 1753 | |
| 1754 | //----------------------------------------------------------------------- |
| 1755 | /** |
| 1756 | * Composite implementation that merges other fields to create a full pattern. |
| 1757 | */ |
| 1758 | static class Composite |
| 1759 | implements PeriodPrinter, PeriodParser { |
| 1760 | |
| 1761 | private final PeriodPrinter[] iPrinters; |
| 1762 | private final PeriodParser[] iParsers; |
| 1763 | |
| 1764 | Composite(List elementPairs) { |
| 1765 | List printerList = new ArrayList(); |
| 1766 | List parserList = new ArrayList(); |
| 1767 | |
| 1768 | decompose(elementPairs, printerList, parserList); |
| 1769 | |
| 1770 | if (printerList.size() <= 0) { |
| 1771 | iPrinters = null; |
| 1772 | } else { |
| 1773 | iPrinters = (PeriodPrinter[]) printerList.toArray( |
| 1774 | new PeriodPrinter[printerList.size()]); |
| 1775 | } |
| 1776 | |
| 1777 | if (parserList.size() <= 0) { |
| 1778 | iParsers = null; |
| 1779 | } else { |
| 1780 | iParsers = (PeriodParser[]) parserList.toArray( |
| 1781 | new PeriodParser[parserList.size()]); |
| 1782 | } |
| 1783 | } |
| 1784 | |
| 1785 | public int countFieldsToPrint(ReadablePeriod period, int stopAt, Locale locale) { |
| 1786 | int sum = 0; |
| 1787 | PeriodPrinter[] printers = iPrinters; |
| 1788 | for (int i=printers.length; sum < stopAt && --i>=0; ) { |
| 1789 | sum += printers[i].countFieldsToPrint(period, Integer.MAX_VALUE, locale); |
| 1790 | } |
| 1791 | return sum; |
| 1792 | } |
| 1793 | |
| 1794 | public int calculatePrintedLength(ReadablePeriod period, Locale locale) { |
| 1795 | int sum = 0; |
| 1796 | PeriodPrinter[] printers = iPrinters; |
| 1797 | for (int i=printers.length; --i>=0; ) { |
| 1798 | sum += printers[i].calculatePrintedLength(period, locale); |
| 1799 | } |
| 1800 | return sum; |
| 1801 | } |
| 1802 | |
| 1803 | public void printTo(StringBuffer buf, ReadablePeriod period, Locale locale) { |
| 1804 | PeriodPrinter[] printers = iPrinters; |
| 1805 | int len = printers.length; |
| 1806 | for (int i=0; i<len; i++) { |
| 1807 | printers[i].printTo(buf, period, locale); |
| 1808 | } |
| 1809 | } |
| 1810 | |
| 1811 | public void printTo(Writer out, ReadablePeriod period, Locale locale) throws IOException { |
| 1812 | PeriodPrinter[] printers = iPrinters; |
| 1813 | int len = printers.length; |
| 1814 | for (int i=0; i<len; i++) { |
| 1815 | printers[i].printTo(out, period, locale); |
| 1816 | } |
| 1817 | } |
| 1818 | |
| 1819 | public int parseInto( |
| 1820 | ReadWritablePeriod period, String periodStr, |
| 1821 | int position, Locale locale) { |
| 1822 | PeriodParser[] parsers = iParsers; |
| 1823 | if (parsers == null) { |
| 1824 | throw new UnsupportedOperationException(); |
| 1825 | } |
| 1826 | |
| 1827 | int len = parsers.length; |
| 1828 | for (int i=0; i<len && position >= 0; i++) { |
| 1829 | position = parsers[i].parseInto(period, periodStr, position, locale); |
| 1830 | } |
| 1831 | return position; |
| 1832 | } |
| 1833 | |
| 1834 | private void decompose(List elementPairs, List printerList, List parserList) { |
| 1835 | int size = elementPairs.size(); |
| 1836 | for (int i=0; i<size; i+=2) { |
| 1837 | Object element = elementPairs.get(i); |
| 1838 | if (element instanceof PeriodPrinter) { |
| 1839 | if (element instanceof Composite) { |
| 1840 | addArrayToList(printerList, ((Composite) element).iPrinters); |
| 1841 | } else { |
| 1842 | printerList.add(element); |
| 1843 | } |
| 1844 | } |
| 1845 | |
| 1846 | element = elementPairs.get(i + 1); |
| 1847 | if (element instanceof PeriodParser) { |
| 1848 | if (element instanceof Composite) { |
| 1849 | addArrayToList(parserList, ((Composite) element).iParsers); |
| 1850 | } else { |
| 1851 | parserList.add(element); |
| 1852 | } |
| 1853 | } |
| 1854 | } |
| 1855 | } |
| 1856 | |
| 1857 | private void addArrayToList(List list, Object[] array) { |
| 1858 | if (array != null) { |
| 1859 | for (int i=0; i<array.length; i++) { |
| 1860 | list.add(array[i]); |
| 1861 | } |
| 1862 | } |
| 1863 | } |
| 1864 | } |
| 1865 | |
| 1866 | } |