IntentFilter.java revision b3cddae4994128983b6bf7e808a7670f90cc30e4
1/* 2 * Copyright (C) 2006 The Android Open Source Project 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 17package android.content; 18 19import org.xmlpull.v1.XmlPullParser; 20import org.xmlpull.v1.XmlPullParserException; 21import org.xmlpull.v1.XmlSerializer; 22 23 24import java.io.IOException; 25import java.util.ArrayList; 26import java.util.Iterator; 27import java.util.Set; 28 29import android.net.Uri; 30import android.os.Parcel; 31import android.os.Parcelable; 32import android.os.PatternMatcher; 33import android.util.AndroidException; 34import android.util.Config; 35import android.util.Log; 36import android.util.Printer; 37import com.android.internal.util.XmlUtils; 38 39/** 40 * Structured description of Intent values to be matched. An IntentFilter can 41 * match against actions, categories, and data (either via its type, scheme, 42 * and/or path) in an Intent. It also includes a "priority" value which is 43 * used to order multiple matching filters. 44 * 45 * <p>IntentFilter objects are often created in XML as part of a package's 46 * {@link android.R.styleable#AndroidManifest AndroidManifest.xml} file, 47 * using {@link android.R.styleable#AndroidManifestIntentFilter intent-filter} 48 * tags. 49 * 50 * <p>There are three Intent characteristics you can filter on: the 51 * <em>action</em>, <em>data</em>, and <em>categories</em>. For each of these 52 * characteristics you can provide 53 * multiple possible matching values (via {@link #addAction}, 54 * {@link #addDataType}, {@link #addDataScheme} {@link #addDataAuthority}, 55 * {@link #addDataPath}, and {@link #addCategory}, respectively). 56 * For actions, the field 57 * will not be tested if no values have been given (treating it as a wildcard); 58 * if no data characteristics are specified, however, then the filter will 59 * only match intents that contain no data. 60 * 61 * <p>The data characteristic is 62 * itself divided into three attributes: type, scheme, authority, and path. 63 * Any that are 64 * specified must match the contents of the Intent. If you specify a scheme 65 * but no type, only Intent that does not have a type (such as mailto:) will 66 * match; a content: URI will never match because they always have a MIME type 67 * that is supplied by their content provider. Specifying a type with no scheme 68 * has somewhat special meaning: it will match either an Intent with no URI 69 * field, or an Intent with a content: or file: URI. If you specify neither, 70 * then only an Intent with no data or type will match. To specify an authority, 71 * you must also specify one or more schemes that it is associated with. 72 * To specify a path, you also must specify both one or more authorities and 73 * one or more schemes it is associated with. 74 * 75 * <p>A match is based on the following rules. Note that 76 * for an IntentFilter to match an Intent, three conditions must hold: 77 * the <strong>action</strong> and <strong>category</strong> must match, and 78 * the data (both the <strong>data type</strong> and 79 * <strong>data scheme+authority+path</strong> if specified) must match. 80 * 81 * <p><strong>Action</strong> matches if any of the given values match the 82 * Intent action, <em>or</em> if no actions were specified in the filter. 83 * 84 * <p><strong>Data Type</strong> matches if any of the given values match the 85 * Intent type. The Intent 86 * type is determined by calling {@link Intent#resolveType}. A wildcard can be 87 * used for the MIME sub-type, in both the Intent and IntentFilter, so that the 88 * type "audio/*" will match "audio/mpeg", "audio/aiff", "audio/*", etc. 89 * <em>Note that MIME type matching here is <b>case sensitive</b>, unlike 90 * formal RFC MIME types!</em> You should thus always use lower case letters 91 * for your MIME types. 92 * 93 * <p><strong>Data Scheme</strong> matches if any of the given values match the 94 * Intent data's scheme. 95 * The Intent scheme is determined by calling {@link Intent#getData} 96 * and {@link android.net.Uri#getScheme} on that URI. 97 * <em>Note that scheme matching here is <b>case sensitive</b>, unlike 98 * formal RFC schemes!</em> You should thus always use lower case letters 99 * for your schemes. 100 * 101 * <p><strong>Data Authority</strong> matches if any of the given values match 102 * the Intent's data authority <em>and</em> one of the data scheme's in the filter 103 * has matched the Intent, <em>or</em> no authories were supplied in the filter. 104 * The Intent authority is determined by calling 105 * {@link Intent#getData} and {@link android.net.Uri#getAuthority} on that URI. 106 * <em>Note that authority matching here is <b>case sensitive</b>, unlike 107 * formal RFC host names!</em> You should thus always use lower case letters 108 * for your authority. 109 * 110 * <p><strong>Data Path</strong> matches if any of the given values match the 111 * Intent's data path <em>and</em> both a scheme and authority in the filter 112 * has matched against the Intent, <em>or</em> no paths were supplied in the 113 * filter. The Intent authority is determined by calling 114 * {@link Intent#getData} and {@link android.net.Uri#getPath} on that URI. 115 * 116 * <p><strong>Categories</strong> match if <em>all</em> of the categories in 117 * the Intent match categories given in the filter. Extra categories in the 118 * filter that are not in the Intent will not cause the match to fail. Note 119 * that unlike the action, an IntentFilter with no categories 120 * will only match an Intent that does not have any categories. 121 */ 122public class IntentFilter implements Parcelable { 123 private static final String SGLOB_STR = "sglob"; 124 private static final String PREFIX_STR = "prefix"; 125 private static final String LITERAL_STR = "literal"; 126 private static final String PATH_STR = "path"; 127 private static final String PORT_STR = "port"; 128 private static final String HOST_STR = "host"; 129 private static final String AUTH_STR = "auth"; 130 private static final String SCHEME_STR = "scheme"; 131 private static final String TYPE_STR = "type"; 132 private static final String CAT_STR = "cat"; 133 private static final String NAME_STR = "name"; 134 private static final String ACTION_STR = "action"; 135 136 /** 137 * The filter {@link #setPriority} value at which system high-priority 138 * receivers are placed; that is, receivers that should execute before 139 * application code. Applications should never use filters with this or 140 * higher priorities. 141 * 142 * @see #setPriority 143 */ 144 public static final int SYSTEM_HIGH_PRIORITY = 1000; 145 146 /** 147 * The filter {@link #setPriority} value at which system low-priority 148 * receivers are placed; that is, receivers that should execute after 149 * application code. Applications should never use filters with this or 150 * lower priorities. 151 * 152 * @see #setPriority 153 */ 154 public static final int SYSTEM_LOW_PRIORITY = -1000; 155 156 /** 157 * The part of a match constant that describes the category of match 158 * that occurred. May be either {@link #MATCH_CATEGORY_EMPTY}, 159 * {@link #MATCH_CATEGORY_SCHEME}, {@link #MATCH_CATEGORY_HOST}, 160 * {@link #MATCH_CATEGORY_PORT}, 161 * {@link #MATCH_CATEGORY_PATH}, or {@link #MATCH_CATEGORY_TYPE}. Higher 162 * values indicate a better match. 163 */ 164 public static final int MATCH_CATEGORY_MASK = 0xfff0000; 165 166 /** 167 * The part of a match constant that applies a quality adjustment to the 168 * basic category of match. The value {@link #MATCH_ADJUSTMENT_NORMAL} 169 * is no adjustment; higher numbers than that improve the quality, while 170 * lower numbers reduce it. 171 */ 172 public static final int MATCH_ADJUSTMENT_MASK = 0x000ffff; 173 174 /** 175 * Quality adjustment applied to the category of match that signifies 176 * the default, base value; higher numbers improve the quality while 177 * lower numbers reduce it. 178 */ 179 public static final int MATCH_ADJUSTMENT_NORMAL = 0x8000; 180 181 /** 182 * The filter matched an intent that had no data specified. 183 */ 184 public static final int MATCH_CATEGORY_EMPTY = 0x0100000; 185 /** 186 * The filter matched an intent with the same data URI scheme. 187 */ 188 public static final int MATCH_CATEGORY_SCHEME = 0x0200000; 189 /** 190 * The filter matched an intent with the same data URI scheme and 191 * authority host. 192 */ 193 public static final int MATCH_CATEGORY_HOST = 0x0300000; 194 /** 195 * The filter matched an intent with the same data URI scheme and 196 * authority host and port. 197 */ 198 public static final int MATCH_CATEGORY_PORT = 0x0400000; 199 /** 200 * The filter matched an intent with the same data URI scheme, 201 * authority, and path. 202 */ 203 public static final int MATCH_CATEGORY_PATH = 0x0500000; 204 /** 205 * The filter matched an intent with the same data MIME type. 206 */ 207 public static final int MATCH_CATEGORY_TYPE = 0x0600000; 208 209 /** 210 * The filter didn't match due to different MIME types. 211 */ 212 public static final int NO_MATCH_TYPE = -1; 213 /** 214 * The filter didn't match due to different data URIs. 215 */ 216 public static final int NO_MATCH_DATA = -2; 217 /** 218 * The filter didn't match due to different actions. 219 */ 220 public static final int NO_MATCH_ACTION = -3; 221 /** 222 * The filter didn't match because it required one or more categories 223 * that were not in the Intent. 224 */ 225 public static final int NO_MATCH_CATEGORY = -4; 226 227 private int mPriority; 228 private final ArrayList<String> mActions; 229 private ArrayList<String> mCategories = null; 230 private ArrayList<String> mDataSchemes = null; 231 private ArrayList<AuthorityEntry> mDataAuthorities = null; 232 private ArrayList<PatternMatcher> mDataPaths = null; 233 private ArrayList<String> mDataTypes = null; 234 private boolean mHasPartialTypes = false; 235 236 // These functions are the start of more optimized code for managing 237 // the string sets... not yet implemented. 238 239 private static int findStringInSet(String[] set, String string, 240 int[] lengths, int lenPos) { 241 if (set == null) return -1; 242 final int N = lengths[lenPos]; 243 for (int i=0; i<N; i++) { 244 if (set[i].equals(string)) return i; 245 } 246 return -1; 247 } 248 249 private static String[] addStringToSet(String[] set, String string, 250 int[] lengths, int lenPos) { 251 if (findStringInSet(set, string, lengths, lenPos) >= 0) return set; 252 if (set == null) { 253 set = new String[2]; 254 set[0] = string; 255 lengths[lenPos] = 1; 256 return set; 257 } 258 final int N = lengths[lenPos]; 259 if (N < set.length) { 260 set[N] = string; 261 lengths[lenPos] = N+1; 262 return set; 263 } 264 265 String[] newSet = new String[(N*3)/2 + 2]; 266 System.arraycopy(set, 0, newSet, 0, N); 267 set = newSet; 268 set[N] = string; 269 lengths[lenPos] = N+1; 270 return set; 271 } 272 273 private static String[] removeStringFromSet(String[] set, String string, 274 int[] lengths, int lenPos) { 275 int pos = findStringInSet(set, string, lengths, lenPos); 276 if (pos < 0) return set; 277 final int N = lengths[lenPos]; 278 if (N > (set.length/4)) { 279 int copyLen = N-(pos+1); 280 if (copyLen > 0) { 281 System.arraycopy(set, pos+1, set, pos, copyLen); 282 } 283 set[N-1] = null; 284 lengths[lenPos] = N-1; 285 return set; 286 } 287 288 String[] newSet = new String[set.length/3]; 289 if (pos > 0) System.arraycopy(set, 0, newSet, 0, pos); 290 if ((pos+1) < N) System.arraycopy(set, pos+1, newSet, pos, N-(pos+1)); 291 return newSet; 292 } 293 294 /** 295 * This exception is thrown when a given MIME type does not have a valid 296 * syntax. 297 */ 298 public static class MalformedMimeTypeException extends AndroidException { 299 public MalformedMimeTypeException() { 300 } 301 302 public MalformedMimeTypeException(String name) { 303 super(name); 304 } 305 }; 306 307 /** 308 * Create a new IntentFilter instance with a specified action and MIME 309 * type, where you know the MIME type is correctly formatted. This catches 310 * the {@link MalformedMimeTypeException} exception that the constructor 311 * can call and turns it into a runtime exception. 312 * 313 * @param action The action to match, i.e. Intent.ACTION_VIEW. 314 * @param dataType The type to match, i.e. "vnd.android.cursor.dir/person". 315 * 316 * @return A new IntentFilter for the given action and type. 317 * 318 * @see #IntentFilter(String, String) 319 */ 320 public static IntentFilter create(String action, String dataType) { 321 try { 322 return new IntentFilter(action, dataType); 323 } catch (MalformedMimeTypeException e) { 324 throw new RuntimeException("Bad MIME type", e); 325 } 326 } 327 328 /** 329 * New empty IntentFilter. 330 */ 331 public IntentFilter() { 332 mPriority = 0; 333 mActions = new ArrayList<String>(); 334 } 335 336 /** 337 * New IntentFilter that matches a single action with no data. If 338 * no data characteristics are subsequently specified, then the 339 * filter will only match intents that contain no data. 340 * 341 * @param action The action to match, i.e. Intent.ACTION_MAIN. 342 */ 343 public IntentFilter(String action) { 344 mPriority = 0; 345 mActions = new ArrayList<String>(); 346 addAction(action); 347 } 348 349 /** 350 * New IntentFilter that matches a single action and data type. 351 * 352 * <p><em>Note: MIME type matching in the Android framework is 353 * case-sensitive, unlike formal RFC MIME types. As a result, 354 * you should always write your MIME types with lower case letters, 355 * and any MIME types you receive from outside of Android should be 356 * converted to lower case before supplying them here.</em></p> 357 * 358 * <p>Throws {@link MalformedMimeTypeException} if the given MIME type is 359 * not syntactically correct. 360 * 361 * @param action The action to match, i.e. Intent.ACTION_VIEW. 362 * @param dataType The type to match, i.e. "vnd.android.cursor.dir/person". 363 * 364 */ 365 public IntentFilter(String action, String dataType) 366 throws MalformedMimeTypeException { 367 mPriority = 0; 368 mActions = new ArrayList<String>(); 369 addDataType(dataType); 370 } 371 372 /** 373 * New IntentFilter containing a copy of an existing filter. 374 * 375 * @param o The original filter to copy. 376 */ 377 public IntentFilter(IntentFilter o) { 378 mPriority = o.mPriority; 379 mActions = new ArrayList<String>(o.mActions); 380 if (o.mCategories != null) { 381 mCategories = new ArrayList<String>(o.mCategories); 382 } 383 if (o.mDataTypes != null) { 384 mDataTypes = new ArrayList<String>(o.mDataTypes); 385 } 386 if (o.mDataSchemes != null) { 387 mDataSchemes = new ArrayList<String>(o.mDataSchemes); 388 } 389 if (o.mDataAuthorities != null) { 390 mDataAuthorities = new ArrayList<AuthorityEntry>(o.mDataAuthorities); 391 } 392 if (o.mDataPaths != null) { 393 mDataPaths = new ArrayList<PatternMatcher>(o.mDataPaths); 394 } 395 mHasPartialTypes = o.mHasPartialTypes; 396 } 397 398 /** 399 * Modify priority of this filter. The default priority is 0. Positive 400 * values will be before the default, lower values will be after it. 401 * Applications must use a value that is larger than 402 * {@link #SYSTEM_LOW_PRIORITY} and smaller than 403 * {@link #SYSTEM_HIGH_PRIORITY} . 404 * 405 * @param priority The new priority value. 406 * 407 * @see #getPriority 408 * @see #SYSTEM_LOW_PRIORITY 409 * @see #SYSTEM_HIGH_PRIORITY 410 */ 411 public final void setPriority(int priority) { 412 mPriority = priority; 413 } 414 415 /** 416 * Return the priority of this filter. 417 * 418 * @return The priority of the filter. 419 * 420 * @see #setPriority 421 */ 422 public final int getPriority() { 423 return mPriority; 424 } 425 426 /** 427 * Add a new Intent action to match against. If any actions are included 428 * in the filter, then an Intent's action must be one of those values for 429 * it to match. If no actions are included, the Intent action is ignored. 430 * 431 * @param action Name of the action to match, i.e. Intent.ACTION_VIEW. 432 */ 433 public final void addAction(String action) { 434 if (!mActions.contains(action)) { 435 mActions.add(action.intern()); 436 } 437 } 438 439 /** 440 * Return the number of actions in the filter. 441 */ 442 public final int countActions() { 443 return mActions.size(); 444 } 445 446 /** 447 * Return an action in the filter. 448 */ 449 public final String getAction(int index) { 450 return mActions.get(index); 451 } 452 453 /** 454 * Is the given action included in the filter? Note that if the filter 455 * does not include any actions, false will <em>always</em> be returned. 456 * 457 * @param action The action to look for. 458 * 459 * @return True if the action is explicitly mentioned in the filter. 460 */ 461 public final boolean hasAction(String action) { 462 return mActions.contains(action); 463 } 464 465 /** 466 * Match this filter against an Intent's action. If the filter does not 467 * specify any actions, the match will always fail. 468 * 469 * @param action The desired action to look for. 470 * 471 * @return True if the action is listed in the filter or the filter does 472 * not specify any actions. 473 */ 474 public final boolean matchAction(String action) { 475 if (action == null || mActions == null || mActions.size() == 0) { 476 return false; 477 } 478 return mActions.contains(action); 479 } 480 481 /** 482 * Return an iterator over the filter's actions. If there are no actions, 483 * returns null. 484 */ 485 public final Iterator<String> actionsIterator() { 486 return mActions != null ? mActions.iterator() : null; 487 } 488 489 /** 490 * Add a new Intent data type to match against. If any types are 491 * included in the filter, then an Intent's data must be <em>either</em> 492 * one of these types <em>or</em> a matching scheme. If no data types 493 * are included, then an Intent will only match if it specifies no data. 494 * 495 * <p><em>Note: MIME type matching in the Android framework is 496 * case-sensitive, unlike formal RFC MIME types. As a result, 497 * you should always write your MIME types with lower case letters, 498 * and any MIME types you receive from outside of Android should be 499 * converted to lower case before supplying them here.</em></p> 500 * 501 * <p>Throws {@link MalformedMimeTypeException} if the given MIME type is 502 * not syntactically correct. 503 * 504 * @param type Name of the data type to match, i.e. "vnd.android.cursor.dir/person". 505 * 506 * @see #matchData 507 */ 508 public final void addDataType(String type) 509 throws MalformedMimeTypeException { 510 final int slashpos = type.indexOf('/'); 511 final int typelen = type.length(); 512 if (slashpos > 0 && typelen >= slashpos+2) { 513 if (mDataTypes == null) mDataTypes = new ArrayList<String>(); 514 if (typelen == slashpos+2 && type.charAt(slashpos+1) == '*') { 515 String str = type.substring(0, slashpos); 516 if (!mDataTypes.contains(str)) { 517 mDataTypes.add(str.intern()); 518 } 519 mHasPartialTypes = true; 520 } else { 521 if (!mDataTypes.contains(type)) { 522 mDataTypes.add(type.intern()); 523 } 524 } 525 return; 526 } 527 528 throw new MalformedMimeTypeException(type); 529 } 530 531 /** 532 * Is the given data type included in the filter? Note that if the filter 533 * does not include any type, false will <em>always</em> be returned. 534 * 535 * @param type The data type to look for. 536 * 537 * @return True if the type is explicitly mentioned in the filter. 538 */ 539 public final boolean hasDataType(String type) { 540 return mDataTypes != null && findMimeType(type); 541 } 542 543 /** 544 * Return the number of data types in the filter. 545 */ 546 public final int countDataTypes() { 547 return mDataTypes != null ? mDataTypes.size() : 0; 548 } 549 550 /** 551 * Return a data type in the filter. 552 */ 553 public final String getDataType(int index) { 554 return mDataTypes.get(index); 555 } 556 557 /** 558 * Return an iterator over the filter's data types. 559 */ 560 public final Iterator<String> typesIterator() { 561 return mDataTypes != null ? mDataTypes.iterator() : null; 562 } 563 564 /** 565 * Add a new Intent data scheme to match against. If any schemes are 566 * included in the filter, then an Intent's data must be <em>either</em> 567 * one of these schemes <em>or</em> a matching data type. If no schemes 568 * are included, then an Intent will match only if it includes no data. 569 * 570 * <p><em>Note: scheme matching in the Android framework is 571 * case-sensitive, unlike formal RFC schemes. As a result, 572 * you should always write your schemes with lower case letters, 573 * and any schemes you receive from outside of Android should be 574 * converted to lower case before supplying them here.</em></p> 575 * 576 * @param scheme Name of the scheme to match, i.e. "http". 577 * 578 * @see #matchData 579 */ 580 public final void addDataScheme(String scheme) { 581 if (mDataSchemes == null) mDataSchemes = new ArrayList<String>(); 582 if (!mDataSchemes.contains(scheme)) { 583 mDataSchemes.add(scheme.intern()); 584 } 585 } 586 587 /** 588 * Return the number of data schemes in the filter. 589 */ 590 public final int countDataSchemes() { 591 return mDataSchemes != null ? mDataSchemes.size() : 0; 592 } 593 594 /** 595 * Return a data scheme in the filter. 596 */ 597 public final String getDataScheme(int index) { 598 return mDataSchemes.get(index); 599 } 600 601 /** 602 * Is the given data scheme included in the filter? Note that if the 603 * filter does not include any scheme, false will <em>always</em> be 604 * returned. 605 * 606 * @param scheme The data scheme to look for. 607 * 608 * @return True if the scheme is explicitly mentioned in the filter. 609 */ 610 public final boolean hasDataScheme(String scheme) { 611 return mDataSchemes != null && mDataSchemes.contains(scheme); 612 } 613 614 /** 615 * Return an iterator over the filter's data schemes. 616 */ 617 public final Iterator<String> schemesIterator() { 618 return mDataSchemes != null ? mDataSchemes.iterator() : null; 619 } 620 621 /** 622 * This is an entry for a single authority in the Iterator returned by 623 * {@link #authoritiesIterator()}. 624 */ 625 public final static class AuthorityEntry { 626 private final String mOrigHost; 627 private final String mHost; 628 private final boolean mWild; 629 private final int mPort; 630 631 public AuthorityEntry(String host, String port) { 632 mOrigHost = host; 633 mWild = host.length() > 0 && host.charAt(0) == '*'; 634 mHost = mWild ? host.substring(1).intern() : host; 635 mPort = port != null ? Integer.parseInt(port) : -1; 636 } 637 638 AuthorityEntry(Parcel src) { 639 mOrigHost = src.readString(); 640 mHost = src.readString(); 641 mWild = src.readInt() != 0; 642 mPort = src.readInt(); 643 } 644 645 void writeToParcel(Parcel dest) { 646 dest.writeString(mOrigHost); 647 dest.writeString(mHost); 648 dest.writeInt(mWild ? 1 : 0); 649 dest.writeInt(mPort); 650 } 651 652 public String getHost() { 653 return mOrigHost; 654 } 655 656 public int getPort() { 657 return mPort; 658 } 659 660 /** 661 * Determine whether this AuthorityEntry matches the given data Uri. 662 * <em>Note that this comparison is case-sensitive, unlike formal 663 * RFC host names. You thus should always normalize to lower-case.</em> 664 * 665 * @param data The Uri to match. 666 * @return Returns either {@link IntentFilter#NO_MATCH_DATA}, 667 * {@link IntentFilter#MATCH_CATEGORY_PORT}, or 668 * {@link IntentFilter#MATCH_CATEGORY_HOST}. 669 */ 670 public int match(Uri data) { 671 String host = data.getHost(); 672 if (host == null) { 673 return NO_MATCH_DATA; 674 } 675 if (Config.LOGV) Log.v("IntentFilter", 676 "Match host " + host + ": " + mHost); 677 if (mWild) { 678 if (host.length() < mHost.length()) { 679 return NO_MATCH_DATA; 680 } 681 host = host.substring(host.length()-mHost.length()); 682 } 683 if (host.compareToIgnoreCase(mHost) != 0) { 684 return NO_MATCH_DATA; 685 } 686 if (mPort >= 0) { 687 if (mPort != data.getPort()) { 688 return NO_MATCH_DATA; 689 } 690 return MATCH_CATEGORY_PORT; 691 } 692 return MATCH_CATEGORY_HOST; 693 } 694 }; 695 696 /** 697 * Add a new Intent data authority to match against. The filter must 698 * include one or more schemes (via {@link #addDataScheme}) for the 699 * authority to be considered. If any authorities are 700 * included in the filter, then an Intent's data must match one of 701 * them. If no authorities are included, then only the scheme must match. 702 * 703 * <p><em>Note: host name in the Android framework is 704 * case-sensitive, unlike formal RFC host names. As a result, 705 * you should always write your host names with lower case letters, 706 * and any host names you receive from outside of Android should be 707 * converted to lower case before supplying them here.</em></p> 708 * 709 * @param host The host part of the authority to match. May start with a 710 * single '*' to wildcard the front of the host name. 711 * @param port Optional port part of the authority to match. If null, any 712 * port is allowed. 713 * 714 * @see #matchData 715 * @see #addDataScheme 716 */ 717 public final void addDataAuthority(String host, String port) { 718 if (mDataAuthorities == null) mDataAuthorities = 719 new ArrayList<AuthorityEntry>(); 720 if (port != null) port = port.intern(); 721 mDataAuthorities.add(new AuthorityEntry(host.intern(), port)); 722 } 723 724 /** 725 * Return the number of data authorities in the filter. 726 */ 727 public final int countDataAuthorities() { 728 return mDataAuthorities != null ? mDataAuthorities.size() : 0; 729 } 730 731 /** 732 * Return a data authority in the filter. 733 */ 734 public final AuthorityEntry getDataAuthority(int index) { 735 return mDataAuthorities.get(index); 736 } 737 738 /** 739 * Is the given data authority included in the filter? Note that if the 740 * filter does not include any authorities, false will <em>always</em> be 741 * returned. 742 * 743 * @param data The data whose authority is being looked for. 744 * 745 * @return Returns true if the data string matches an authority listed in the 746 * filter. 747 */ 748 public final boolean hasDataAuthority(Uri data) { 749 return matchDataAuthority(data) >= 0; 750 } 751 752 /** 753 * Return an iterator over the filter's data authorities. 754 */ 755 public final Iterator<AuthorityEntry> authoritiesIterator() { 756 return mDataAuthorities != null ? mDataAuthorities.iterator() : null; 757 } 758 759 /** 760 * Add a new Intent data oath to match against. The filter must 761 * include one or more schemes (via {@link #addDataScheme}) <em>and</em> 762 * one or more authorities (via {@link #addDataAuthority}) for the 763 * path to be considered. If any paths are 764 * included in the filter, then an Intent's data must match one of 765 * them. If no paths are included, then only the scheme/authority must 766 * match. 767 * 768 * <p>The path given here can either be a literal that must directly 769 * match or match against a prefix, or it can be a simple globbing pattern. 770 * If the latter, you can use '*' anywhere in the pattern to match zero 771 * or more instances of the previous character, '.' as a wildcard to match 772 * any character, and '\' to escape the next character. 773 * 774 * @param path Either a raw string that must exactly match the file 775 * path, or a simple pattern, depending on <var>type</var>. 776 * @param type Determines how <var>path</var> will be compared to 777 * determine a match: either {@link PatternMatcher#PATTERN_LITERAL}, 778 * {@link PatternMatcher#PATTERN_PREFIX}, or 779 * {@link PatternMatcher#PATTERN_SIMPLE_GLOB}. 780 * 781 * @see #matchData 782 * @see #addDataScheme 783 * @see #addDataAuthority 784 */ 785 public final void addDataPath(String path, int type) { 786 if (mDataPaths == null) mDataPaths = new ArrayList<PatternMatcher>(); 787 mDataPaths.add(new PatternMatcher(path.intern(), type)); 788 } 789 790 /** 791 * Return the number of data paths in the filter. 792 */ 793 public final int countDataPaths() { 794 return mDataPaths != null ? mDataPaths.size() : 0; 795 } 796 797 /** 798 * Return a data path in the filter. 799 */ 800 public final PatternMatcher getDataPath(int index) { 801 return mDataPaths.get(index); 802 } 803 804 /** 805 * Is the given data path included in the filter? Note that if the 806 * filter does not include any paths, false will <em>always</em> be 807 * returned. 808 * 809 * @param data The data path to look for. This is without the scheme 810 * prefix. 811 * 812 * @return True if the data string matches a path listed in the 813 * filter. 814 */ 815 public final boolean hasDataPath(String data) { 816 if (mDataPaths == null) { 817 return false; 818 } 819 Iterator<PatternMatcher> i = mDataPaths.iterator(); 820 while (i.hasNext()) { 821 final PatternMatcher pe = i.next(); 822 if (pe.match(data)) { 823 return true; 824 } 825 } 826 return false; 827 } 828 829 /** 830 * Return an iterator over the filter's data paths. 831 */ 832 public final Iterator<PatternMatcher> pathsIterator() { 833 return mDataPaths != null ? mDataPaths.iterator() : null; 834 } 835 836 /** 837 * Match this intent filter against the given Intent data. This ignores 838 * the data scheme -- unlike {@link #matchData}, the authority will match 839 * regardless of whether there is a matching scheme. 840 * 841 * @param data The data whose authority is being looked for. 842 * 843 * @return Returns either {@link #MATCH_CATEGORY_HOST}, 844 * {@link #MATCH_CATEGORY_PORT}, {@link #NO_MATCH_DATA}. 845 */ 846 public final int matchDataAuthority(Uri data) { 847 if (mDataAuthorities == null) { 848 return NO_MATCH_DATA; 849 } 850 Iterator<AuthorityEntry> i = mDataAuthorities.iterator(); 851 while (i.hasNext()) { 852 final AuthorityEntry ae = i.next(); 853 int match = ae.match(data); 854 if (match >= 0) { 855 return match; 856 } 857 } 858 return NO_MATCH_DATA; 859 } 860 861 /** 862 * Match this filter against an Intent's data (type, scheme and path). If 863 * the filter does not specify any types and does not specify any 864 * schemes/paths, the match will only succeed if the intent does not 865 * also specify a type or data. 866 * 867 * <p>Be aware that to match against an authority, you must also specify a base 868 * scheme the authority is in. To match against a data path, both a scheme 869 * and authority must be specified. If the filter does not specify any 870 * types or schemes that it matches against, it is considered to be empty 871 * (any authority or data path given is ignored, as if it were empty as 872 * well). 873 * 874 * <p><em>Note: MIME type, Uri scheme, and host name matching in the 875 * Android framework is case-sensitive, unlike the formal RFC definitions. 876 * As a result, you should always write these elements with lower case letters, 877 * and normalize any MIME types or Uris you receive from 878 * outside of Android to ensure these elements are lower case before 879 * supplying them here.</em></p> 880 * 881 * @param type The desired data type to look for, as returned by 882 * Intent.resolveType(). 883 * @param scheme The desired data scheme to look for, as returned by 884 * Intent.getScheme(). 885 * @param data The full data string to match against, as supplied in 886 * Intent.data. 887 * 888 * @return Returns either a valid match constant (a combination of 889 * {@link #MATCH_CATEGORY_MASK} and {@link #MATCH_ADJUSTMENT_MASK}), 890 * or one of the error codes {@link #NO_MATCH_TYPE} if the type didn't match 891 * or {@link #NO_MATCH_DATA} if the scheme/path didn't match. 892 * 893 * @see #match 894 */ 895 public final int matchData(String type, String scheme, Uri data) { 896 final ArrayList<String> types = mDataTypes; 897 final ArrayList<String> schemes = mDataSchemes; 898 final ArrayList<AuthorityEntry> authorities = mDataAuthorities; 899 final ArrayList<PatternMatcher> paths = mDataPaths; 900 901 int match = MATCH_CATEGORY_EMPTY; 902 903 if (types == null && schemes == null) { 904 return ((type == null && data == null) 905 ? (MATCH_CATEGORY_EMPTY+MATCH_ADJUSTMENT_NORMAL) : NO_MATCH_DATA); 906 } 907 908 if (schemes != null) { 909 if (schemes.contains(scheme != null ? scheme : "")) { 910 match = MATCH_CATEGORY_SCHEME; 911 } else { 912 return NO_MATCH_DATA; 913 } 914 915 if (authorities != null) { 916 int authMatch = matchDataAuthority(data); 917 if (authMatch >= 0) { 918 if (paths == null) { 919 match = authMatch; 920 } else if (hasDataPath(data.getPath())) { 921 match = MATCH_CATEGORY_PATH; 922 } else { 923 return NO_MATCH_DATA; 924 } 925 } else { 926 return NO_MATCH_DATA; 927 } 928 } 929 } else { 930 // Special case: match either an Intent with no data URI, 931 // or with a scheme: URI. This is to give a convenience for 932 // the common case where you want to deal with data in a 933 // content provider, which is done by type, and we don't want 934 // to force everyone to say they handle content: or file: URIs. 935 if (scheme != null && !"".equals(scheme) 936 && !"content".equals(scheme) 937 && !"file".equals(scheme)) { 938 return NO_MATCH_DATA; 939 } 940 } 941 942 if (types != null) { 943 if (findMimeType(type)) { 944 match = MATCH_CATEGORY_TYPE; 945 } else { 946 return NO_MATCH_TYPE; 947 } 948 } else { 949 // If no MIME types are specified, then we will only match against 950 // an Intent that does not have a MIME type. 951 if (type != null) { 952 return NO_MATCH_TYPE; 953 } 954 } 955 956 return match + MATCH_ADJUSTMENT_NORMAL; 957 } 958 959 /** 960 * Add a new Intent category to match against. The semantics of 961 * categories is the opposite of actions -- an Intent includes the 962 * categories that it requires, all of which must be included in the 963 * filter in order to match. In other words, adding a category to the 964 * filter has no impact on matching unless that category is specified in 965 * the intent. 966 * 967 * @param category Name of category to match, i.e. Intent.CATEGORY_EMBED. 968 */ 969 public final void addCategory(String category) { 970 if (mCategories == null) mCategories = new ArrayList<String>(); 971 if (!mCategories.contains(category)) { 972 mCategories.add(category.intern()); 973 } 974 } 975 976 /** 977 * Return the number of categories in the filter. 978 */ 979 public final int countCategories() { 980 return mCategories != null ? mCategories.size() : 0; 981 } 982 983 /** 984 * Return a category in the filter. 985 */ 986 public final String getCategory(int index) { 987 return mCategories.get(index); 988 } 989 990 /** 991 * Is the given category included in the filter? 992 * 993 * @param category The category that the filter supports. 994 * 995 * @return True if the category is explicitly mentioned in the filter. 996 */ 997 public final boolean hasCategory(String category) { 998 return mCategories != null && mCategories.contains(category); 999 } 1000 1001 /** 1002 * Return an iterator over the filter's categories. 1003 */ 1004 public final Iterator<String> categoriesIterator() { 1005 return mCategories != null ? mCategories.iterator() : null; 1006 } 1007 1008 /** 1009 * Match this filter against an Intent's categories. Each category in 1010 * the Intent must be specified by the filter; if any are not in the 1011 * filter, the match fails. 1012 * 1013 * @param categories The categories included in the intent, as returned by 1014 * Intent.getCategories(). 1015 * 1016 * @return If all categories match (success), null; else the name of the 1017 * first category that didn't match. 1018 */ 1019 public final String matchCategories(Set<String> categories) { 1020 if (categories == null) { 1021 return null; 1022 } 1023 1024 Iterator<String> it = categories.iterator(); 1025 1026 if (mCategories == null) { 1027 return it.hasNext() ? it.next() : null; 1028 } 1029 1030 while (it.hasNext()) { 1031 final String category = it.next(); 1032 if (!mCategories.contains(category)) { 1033 return category; 1034 } 1035 } 1036 1037 return null; 1038 } 1039 1040 /** 1041 * Test whether this filter matches the given <var>intent</var>. 1042 * 1043 * @param intent The Intent to compare against. 1044 * @param resolve If true, the intent's type will be resolved by calling 1045 * Intent.resolveType(); otherwise a simple match against 1046 * Intent.type will be performed. 1047 * @param logTag Tag to use in debugging messages. 1048 * 1049 * @return Returns either a valid match constant (a combination of 1050 * {@link #MATCH_CATEGORY_MASK} and {@link #MATCH_ADJUSTMENT_MASK}), 1051 * or one of the error codes {@link #NO_MATCH_TYPE} if the type didn't match, 1052 * {@link #NO_MATCH_DATA} if the scheme/path didn't match, 1053 * {@link #NO_MATCH_ACTION if the action didn't match, or 1054 * {@link #NO_MATCH_CATEGORY} if one or more categories didn't match. 1055 * 1056 * @return How well the filter matches. Negative if it doesn't match, 1057 * zero or positive positive value if it does with a higher 1058 * value representing a better match. 1059 * 1060 * @see #match(String, String, String, android.net.Uri , Set, String) 1061 */ 1062 public final int match(ContentResolver resolver, Intent intent, 1063 boolean resolve, String logTag) { 1064 String type = resolve ? intent.resolveType(resolver) : intent.getType(); 1065 return match(intent.getAction(), type, intent.getScheme(), 1066 intent.getData(), intent.getCategories(), logTag); 1067 } 1068 1069 /** 1070 * Test whether this filter matches the given intent data. A match is 1071 * only successful if the actions and categories in the Intent match 1072 * against the filter, as described in {@link IntentFilter}; in that case, 1073 * the match result returned will be as per {@link #matchData}. 1074 * 1075 * @param action The intent action to match against (Intent.getAction). 1076 * @param type The intent type to match against (Intent.resolveType()). 1077 * @param scheme The data scheme to match against (Intent.getScheme()). 1078 * @param data The data URI to match against (Intent.getData()). 1079 * @param categories The categories to match against 1080 * (Intent.getCategories()). 1081 * @param logTag Tag to use in debugging messages. 1082 * 1083 * @return Returns either a valid match constant (a combination of 1084 * {@link #MATCH_CATEGORY_MASK} and {@link #MATCH_ADJUSTMENT_MASK}), 1085 * or one of the error codes {@link #NO_MATCH_TYPE} if the type didn't match, 1086 * {@link #NO_MATCH_DATA} if the scheme/path didn't match, 1087 * {@link #NO_MATCH_ACTION if the action didn't match, or 1088 * {@link #NO_MATCH_CATEGORY} if one or more categories didn't match. 1089 * 1090 * @see #matchData 1091 * @see Intent#getAction 1092 * @see Intent#resolveType 1093 * @see Intent#getScheme 1094 * @see Intent#getData 1095 * @see Intent#getCategories 1096 */ 1097 public final int match(String action, String type, String scheme, 1098 Uri data, Set<String> categories, String logTag) { 1099 if (action != null && !matchAction(action)) { 1100 if (Config.LOGV) Log.v( 1101 logTag, "No matching action " + action + " for " + this); 1102 return NO_MATCH_ACTION; 1103 } 1104 1105 int dataMatch = matchData(type, scheme, data); 1106 if (dataMatch < 0) { 1107 if (Config.LOGV) { 1108 if (dataMatch == NO_MATCH_TYPE) { 1109 Log.v(logTag, "No matching type " + type 1110 + " for " + this); 1111 } 1112 if (dataMatch == NO_MATCH_DATA) { 1113 Log.v(logTag, "No matching scheme/path " + data 1114 + " for " + this); 1115 } 1116 } 1117 return dataMatch; 1118 } 1119 1120 String categoryMatch = matchCategories(categories); 1121 if (categoryMatch != null) { 1122 if (Config.LOGV) Log.v( 1123 logTag, "No matching category " 1124 + categoryMatch + " for " + this); 1125 return NO_MATCH_CATEGORY; 1126 } 1127 1128 // It would be nice to treat container activities as more 1129 // important than ones that can be embedded, but this is not the way... 1130 if (false) { 1131 if (categories != null) { 1132 dataMatch -= mCategories.size() - categories.size(); 1133 } 1134 } 1135 1136 return dataMatch; 1137 } 1138 1139 /** 1140 * Write the contents of the IntentFilter as an XML stream. 1141 */ 1142 public void writeToXml(XmlSerializer serializer) throws IOException { 1143 int N = countActions(); 1144 for (int i=0; i<N; i++) { 1145 serializer.startTag(null, ACTION_STR); 1146 serializer.attribute(null, NAME_STR, mActions.get(i)); 1147 serializer.endTag(null, ACTION_STR); 1148 } 1149 N = countCategories(); 1150 for (int i=0; i<N; i++) { 1151 serializer.startTag(null, CAT_STR); 1152 serializer.attribute(null, NAME_STR, mCategories.get(i)); 1153 serializer.endTag(null, CAT_STR); 1154 } 1155 N = countDataTypes(); 1156 for (int i=0; i<N; i++) { 1157 serializer.startTag(null, TYPE_STR); 1158 String type = mDataTypes.get(i); 1159 if (type.indexOf('/') < 0) type = type + "/*"; 1160 serializer.attribute(null, NAME_STR, type); 1161 serializer.endTag(null, TYPE_STR); 1162 } 1163 N = countDataSchemes(); 1164 for (int i=0; i<N; i++) { 1165 serializer.startTag(null, SCHEME_STR); 1166 serializer.attribute(null, NAME_STR, mDataSchemes.get(i)); 1167 serializer.endTag(null, SCHEME_STR); 1168 } 1169 N = countDataAuthorities(); 1170 for (int i=0; i<N; i++) { 1171 serializer.startTag(null, AUTH_STR); 1172 AuthorityEntry ae = mDataAuthorities.get(i); 1173 serializer.attribute(null, HOST_STR, ae.getHost()); 1174 if (ae.getPort() >= 0) { 1175 serializer.attribute(null, PORT_STR, Integer.toString(ae.getPort())); 1176 } 1177 serializer.endTag(null, AUTH_STR); 1178 } 1179 N = countDataPaths(); 1180 for (int i=0; i<N; i++) { 1181 serializer.startTag(null, PATH_STR); 1182 PatternMatcher pe = mDataPaths.get(i); 1183 switch (pe.getType()) { 1184 case PatternMatcher.PATTERN_LITERAL: 1185 serializer.attribute(null, LITERAL_STR, pe.getPath()); 1186 break; 1187 case PatternMatcher.PATTERN_PREFIX: 1188 serializer.attribute(null, PREFIX_STR, pe.getPath()); 1189 break; 1190 case PatternMatcher.PATTERN_SIMPLE_GLOB: 1191 serializer.attribute(null, SGLOB_STR, pe.getPath()); 1192 break; 1193 } 1194 serializer.endTag(null, PATH_STR); 1195 } 1196 } 1197 1198 public void readFromXml(XmlPullParser parser) throws XmlPullParserException, 1199 IOException { 1200 int outerDepth = parser.getDepth(); 1201 int type; 1202 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1203 && (type != XmlPullParser.END_TAG 1204 || parser.getDepth() > outerDepth)) { 1205 if (type == XmlPullParser.END_TAG 1206 || type == XmlPullParser.TEXT) { 1207 continue; 1208 } 1209 1210 String tagName = parser.getName(); 1211 if (tagName.equals(ACTION_STR)) { 1212 String name = parser.getAttributeValue(null, NAME_STR); 1213 if (name != null) { 1214 addAction(name); 1215 } 1216 } else if (tagName.equals(CAT_STR)) { 1217 String name = parser.getAttributeValue(null, NAME_STR); 1218 if (name != null) { 1219 addCategory(name); 1220 } 1221 } else if (tagName.equals(TYPE_STR)) { 1222 String name = parser.getAttributeValue(null, NAME_STR); 1223 if (name != null) { 1224 try { 1225 addDataType(name); 1226 } catch (MalformedMimeTypeException e) { 1227 } 1228 } 1229 } else if (tagName.equals(SCHEME_STR)) { 1230 String name = parser.getAttributeValue(null, NAME_STR); 1231 if (name != null) { 1232 addDataScheme(name); 1233 } 1234 } else if (tagName.equals(AUTH_STR)) { 1235 String host = parser.getAttributeValue(null, HOST_STR); 1236 String port = parser.getAttributeValue(null, PORT_STR); 1237 if (host != null) { 1238 addDataAuthority(host, port); 1239 } 1240 } else if (tagName.equals(PATH_STR)) { 1241 String path = parser.getAttributeValue(null, LITERAL_STR); 1242 if (path != null) { 1243 addDataPath(path, PatternMatcher.PATTERN_LITERAL); 1244 } else if ((path=parser.getAttributeValue(null, PREFIX_STR)) != null) { 1245 addDataPath(path, PatternMatcher.PATTERN_PREFIX); 1246 } else if ((path=parser.getAttributeValue(null, SGLOB_STR)) != null) { 1247 addDataPath(path, PatternMatcher.PATTERN_SIMPLE_GLOB); 1248 } 1249 } else { 1250 Log.w("IntentFilter", "Unknown tag parsing IntentFilter: " + tagName); 1251 } 1252 XmlUtils.skipCurrentTag(parser); 1253 } 1254 } 1255 1256 public void dump(Printer du, String prefix) { 1257 if (mActions.size() > 0) { 1258 Iterator<String> it = mActions.iterator(); 1259 while (it.hasNext()) { 1260 du.println(prefix + "Action: \"" + it.next() + "\""); 1261 } 1262 } 1263 if (mCategories != null) { 1264 Iterator<String> it = mCategories.iterator(); 1265 while (it.hasNext()) { 1266 du.println(prefix + "Category: \"" + it.next() + "\""); 1267 } 1268 } 1269 if (mDataSchemes != null) { 1270 Iterator<String> it = mDataSchemes.iterator(); 1271 while (it.hasNext()) { 1272 du.println(prefix + "Data Scheme: \"" + it.next() + "\""); 1273 } 1274 } 1275 if (mDataAuthorities != null) { 1276 Iterator<AuthorityEntry> it = mDataAuthorities.iterator(); 1277 while (it.hasNext()) { 1278 AuthorityEntry ae = it.next(); 1279 du.println(prefix + "Data Authority: \"" + ae.mHost + "\":" 1280 + ae.mPort + (ae.mWild ? " WILD" : "")); 1281 } 1282 } 1283 if (mDataPaths != null) { 1284 Iterator<PatternMatcher> it = mDataPaths.iterator(); 1285 while (it.hasNext()) { 1286 PatternMatcher pe = it.next(); 1287 du.println(prefix + "Data Path: \"" + pe + "\""); 1288 } 1289 } 1290 if (mDataTypes != null) { 1291 Iterator<String> it = mDataTypes.iterator(); 1292 while (it.hasNext()) { 1293 du.println(prefix + "Data Type: \"" + it.next() + "\""); 1294 } 1295 } 1296 du.println(prefix + "mPriority=" + mPriority 1297 + ", mHasPartialTypes=" + mHasPartialTypes); 1298 } 1299 1300 public static final Parcelable.Creator<IntentFilter> CREATOR 1301 = new Parcelable.Creator<IntentFilter>() { 1302 public IntentFilter createFromParcel(Parcel source) { 1303 return new IntentFilter(source); 1304 } 1305 1306 public IntentFilter[] newArray(int size) { 1307 return new IntentFilter[size]; 1308 } 1309 }; 1310 1311 public final int describeContents() { 1312 return 0; 1313 } 1314 1315 public final void writeToParcel(Parcel dest, int flags) { 1316 dest.writeStringList(mActions); 1317 if (mCategories != null) { 1318 dest.writeInt(1); 1319 dest.writeStringList(mCategories); 1320 } else { 1321 dest.writeInt(0); 1322 } 1323 if (mDataSchemes != null) { 1324 dest.writeInt(1); 1325 dest.writeStringList(mDataSchemes); 1326 } else { 1327 dest.writeInt(0); 1328 } 1329 if (mDataTypes != null) { 1330 dest.writeInt(1); 1331 dest.writeStringList(mDataTypes); 1332 } else { 1333 dest.writeInt(0); 1334 } 1335 if (mDataAuthorities != null) { 1336 final int N = mDataAuthorities.size(); 1337 dest.writeInt(N); 1338 for (int i=0; i<N; i++) { 1339 mDataAuthorities.get(i).writeToParcel(dest); 1340 } 1341 } else { 1342 dest.writeInt(0); 1343 } 1344 if (mDataPaths != null) { 1345 final int N = mDataPaths.size(); 1346 dest.writeInt(N); 1347 for (int i=0; i<N; i++) { 1348 mDataPaths.get(i).writeToParcel(dest, 0); 1349 } 1350 } else { 1351 dest.writeInt(0); 1352 } 1353 dest.writeInt(mPriority); 1354 dest.writeInt(mHasPartialTypes ? 1 : 0); 1355 } 1356 1357 /** 1358 * For debugging -- perform a check on the filter, return true if it passed 1359 * or false if it failed. 1360 * 1361 * {@hide} 1362 */ 1363 public boolean debugCheck() { 1364 return true; 1365 1366 // This code looks for intent filters that do not specify data. 1367 /* 1368 if (mActions != null && mActions.size() == 1 1369 && mActions.contains(Intent.ACTION_MAIN)) { 1370 return true; 1371 } 1372 1373 if (mDataTypes == null && mDataSchemes == null) { 1374 Log.w("IntentFilter", "QUESTIONABLE INTENT FILTER:"); 1375 dump(Log.WARN, "IntentFilter", " "); 1376 return false; 1377 } 1378 1379 return true; 1380 */ 1381 } 1382 1383 private IntentFilter(Parcel source) { 1384 mActions = new ArrayList<String>(); 1385 source.readStringList(mActions); 1386 if (source.readInt() != 0) { 1387 mCategories = new ArrayList<String>(); 1388 source.readStringList(mCategories); 1389 } 1390 if (source.readInt() != 0) { 1391 mDataSchemes = new ArrayList<String>(); 1392 source.readStringList(mDataSchemes); 1393 } 1394 if (source.readInt() != 0) { 1395 mDataTypes = new ArrayList<String>(); 1396 source.readStringList(mDataTypes); 1397 } 1398 int N = source.readInt(); 1399 if (N > 0) { 1400 mDataAuthorities = new ArrayList<AuthorityEntry>(); 1401 for (int i=0; i<N; i++) { 1402 mDataAuthorities.add(new AuthorityEntry(source)); 1403 } 1404 } 1405 N = source.readInt(); 1406 if (N > 0) { 1407 mDataPaths = new ArrayList<PatternMatcher>(); 1408 for (int i=0; i<N; i++) { 1409 mDataPaths.add(new PatternMatcher(source)); 1410 } 1411 } 1412 mPriority = source.readInt(); 1413 mHasPartialTypes = source.readInt() > 0; 1414 } 1415 1416 private final boolean findMimeType(String type) { 1417 final ArrayList<String> t = mDataTypes; 1418 1419 if (type == null) { 1420 return false; 1421 } 1422 1423 if (t.contains(type)) { 1424 return true; 1425 } 1426 1427 // Deal with an Intent wanting to match every type in the IntentFilter. 1428 final int typeLength = type.length(); 1429 if (typeLength == 3 && type.equals("*/*")) { 1430 return !t.isEmpty(); 1431 } 1432 1433 // Deal with this IntentFilter wanting to match every Intent type. 1434 if (mHasPartialTypes && t.contains("*")) { 1435 return true; 1436 } 1437 1438 final int slashpos = type.indexOf('/'); 1439 if (slashpos > 0) { 1440 if (mHasPartialTypes && t.contains(type.substring(0, slashpos))) { 1441 return true; 1442 } 1443 if (typeLength == slashpos+2 && type.charAt(slashpos+1) == '*') { 1444 // Need to look through all types for one that matches 1445 // our base... 1446 final Iterator<String> it = t.iterator(); 1447 while (it.hasNext()) { 1448 String v = it.next(); 1449 if (type.regionMatches(0, v, 0, slashpos+1)) { 1450 return true; 1451 } 1452 } 1453 } 1454 } 1455 1456 return false; 1457 } 1458} 1459