The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 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 | |
| 17 | package android.net; |
| 18 | |
Jeff Sharkey | 65c4a2b | 2012-09-25 17:22:27 -0700 | [diff] [blame] | 19 | import android.os.Environment; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 20 | import android.os.Parcel; |
| 21 | import android.os.Parcelable; |
Jeff Sharkey | a14acd2 | 2013-04-02 18:27:45 -0700 | [diff] [blame] | 22 | import android.os.StrictMode; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | import android.util.Log; |
Jeff Sharkey | 846318a | 2014-04-04 12:12:41 -0700 | [diff] [blame] | 24 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 25 | import java.io.File; |
Jeff Sharkey | 65c4a2b | 2012-09-25 17:22:27 -0700 | [diff] [blame] | 26 | import java.io.IOException; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | import java.io.UnsupportedEncodingException; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | import java.net.URLEncoder; |
Elliott Hughes | d396a44 | 2013-06-28 16:24:48 -0700 | [diff] [blame] | 29 | import java.nio.charset.StandardCharsets; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | import java.util.AbstractList; |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.Collections; |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 33 | import java.util.LinkedHashSet; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 34 | import java.util.List; |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 35 | import java.util.Locale; |
Jeff Sharkey | 846318a | 2014-04-04 12:12:41 -0700 | [diff] [blame] | 36 | import java.util.Objects; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | import java.util.RandomAccess; |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 38 | import java.util.Set; |
Jeff Sharkey | 846318a | 2014-04-04 12:12:41 -0700 | [diff] [blame] | 39 | |
Jesse Wilson | 0f28af2 | 2011-10-28 18:27:44 -0400 | [diff] [blame] | 40 | import libcore.net.UriCodec; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | |
| 42 | /** |
| 43 | * Immutable URI reference. A URI reference includes a URI and a fragment, the |
| 44 | * component of the URI following a '#'. Builds and parses URI references |
| 45 | * which conform to |
| 46 | * <a href="http://www.faqs.org/rfcs/rfc2396.html">RFC 2396</a>. |
| 47 | * |
| 48 | * <p>In the interest of performance, this class performs little to no |
| 49 | * validation. Behavior is undefined for invalid input. This class is very |
| 50 | * forgiving--in the face of invalid input, it will return garbage |
| 51 | * rather than throw an exception unless otherwise specified. |
| 52 | */ |
| 53 | public abstract class Uri implements Parcelable, Comparable<Uri> { |
| 54 | |
| 55 | /* |
| 56 | |
| 57 | This class aims to do as little up front work as possible. To accomplish |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 58 | that, we vary the implementation depending on what the user passes in. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 59 | For example, we have one implementation if the user passes in a |
| 60 | URI string (StringUri) and another if the user passes in the |
| 61 | individual components (OpaqueUri). |
| 62 | |
| 63 | *Concurrency notes*: Like any truly immutable object, this class is safe |
| 64 | for concurrent use. This class uses a caching pattern in some places where |
| 65 | it doesn't use volatile or synchronized. This is safe to do with ints |
| 66 | because getting or setting an int is atomic. It's safe to do with a String |
| 67 | because the internal fields are final and the memory model guarantees other |
| 68 | threads won't see a partially initialized instance. We are not guaranteed |
| 69 | that some threads will immediately see changes from other threads on |
| 70 | certain platforms, but we don't mind if those threads reconstruct the |
| 71 | cached result. As a result, we get thread safe caching with no concurrency |
| 72 | overhead, which means the most common case, access from a single thread, |
| 73 | is as fast as possible. |
| 74 | |
| 75 | From the Java Language spec.: |
| 76 | |
| 77 | "17.5 Final Field Semantics |
| 78 | |
| 79 | ... when the object is seen by another thread, that thread will always |
| 80 | see the correctly constructed version of that object's final fields. |
| 81 | It will also see versions of any object or array referenced by |
| 82 | those final fields that are at least as up-to-date as the final fields |
| 83 | are." |
| 84 | |
| 85 | In that same vein, all non-transient fields within Uri |
| 86 | implementations should be final and immutable so as to ensure true |
| 87 | immutability for clients even when they don't use proper concurrency |
| 88 | control. |
| 89 | |
| 90 | For reference, from RFC 2396: |
| 91 | |
| 92 | "4.3. Parsing a URI Reference |
| 93 | |
| 94 | A URI reference is typically parsed according to the four main |
| 95 | components and fragment identifier in order to determine what |
| 96 | components are present and whether the reference is relative or |
| 97 | absolute. The individual components are then parsed for their |
| 98 | subparts and, if not opaque, to verify their validity. |
| 99 | |
| 100 | Although the BNF defines what is allowed in each component, it is |
| 101 | ambiguous in terms of differentiating between an authority component |
| 102 | and a path component that begins with two slash characters. The |
| 103 | greedy algorithm is used for disambiguation: the left-most matching |
| 104 | rule soaks up as much of the URI reference string as it is capable of |
| 105 | matching. In other words, the authority component wins." |
| 106 | |
| 107 | The "four main components" of a hierarchical URI consist of |
| 108 | <scheme>://<authority><path>?<query> |
| 109 | |
| 110 | */ |
| 111 | |
| 112 | /** Log tag. */ |
| 113 | private static final String LOG = Uri.class.getSimpleName(); |
| 114 | |
| 115 | /** |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 116 | * NOTE: EMPTY accesses this field during its own initialization, so this |
| 117 | * field *must* be initialized first, or else EMPTY will see a null value! |
| 118 | * |
| 119 | * Placeholder for strings which haven't been cached. This enables us |
| 120 | * to cache null. We intentionally create a new String instance so we can |
| 121 | * compare its identity and there is no chance we will confuse it with |
| 122 | * user data. |
| 123 | */ |
| 124 | @SuppressWarnings("RedundantStringConstructorCall") |
| 125 | private static final String NOT_CACHED = new String("NOT CACHED"); |
| 126 | |
| 127 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 128 | * The empty URI, equivalent to "". |
| 129 | */ |
| 130 | public static final Uri EMPTY = new HierarchicalUri(null, Part.NULL, |
| 131 | PathPart.EMPTY, Part.NULL, Part.NULL); |
| 132 | |
| 133 | /** |
| 134 | * Prevents external subclassing. |
| 135 | */ |
| 136 | private Uri() {} |
| 137 | |
| 138 | /** |
| 139 | * Returns true if this URI is hierarchical like "http://google.com". |
| 140 | * Absolute URIs are hierarchical if the scheme-specific part starts with |
| 141 | * a '/'. Relative URIs are always hierarchical. |
| 142 | */ |
| 143 | public abstract boolean isHierarchical(); |
| 144 | |
| 145 | /** |
| 146 | * Returns true if this URI is opaque like "mailto:nobody@google.com". The |
| 147 | * scheme-specific part of an opaque URI cannot start with a '/'. |
| 148 | */ |
| 149 | public boolean isOpaque() { |
| 150 | return !isHierarchical(); |
| 151 | } |
| 152 | |
| 153 | /** |
Newton Allen | 4465d1a | 2013-11-26 10:25:38 -0800 | [diff] [blame] | 154 | * Returns true if this URI is relative, i.e. if it doesn't contain an |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 155 | * explicit scheme. |
| 156 | * |
| 157 | * @return true if this URI is relative, false if it's absolute |
| 158 | */ |
| 159 | public abstract boolean isRelative(); |
| 160 | |
| 161 | /** |
Newton Allen | 4465d1a | 2013-11-26 10:25:38 -0800 | [diff] [blame] | 162 | * Returns true if this URI is absolute, i.e. if it contains an |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 163 | * explicit scheme. |
| 164 | * |
| 165 | * @return true if this URI is absolute, false if it's relative |
| 166 | */ |
| 167 | public boolean isAbsolute() { |
| 168 | return !isRelative(); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Gets the scheme of this URI. Example: "http" |
| 173 | * |
| 174 | * @return the scheme or null if this is a relative URI |
| 175 | */ |
| 176 | public abstract String getScheme(); |
| 177 | |
| 178 | /** |
Newton Allen | 4465d1a | 2013-11-26 10:25:38 -0800 | [diff] [blame] | 179 | * Gets the scheme-specific part of this URI, i.e. everything between |
| 180 | * the scheme separator ':' and the fragment separator '#'. If this is a |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 181 | * relative URI, this method returns the entire URI. Decodes escaped octets. |
| 182 | * |
| 183 | * <p>Example: "//www.google.com/search?q=android" |
| 184 | * |
| 185 | * @return the decoded scheme-specific-part |
| 186 | */ |
| 187 | public abstract String getSchemeSpecificPart(); |
| 188 | |
| 189 | /** |
Newton Allen | 4465d1a | 2013-11-26 10:25:38 -0800 | [diff] [blame] | 190 | * Gets the scheme-specific part of this URI, i.e. everything between |
| 191 | * the scheme separator ':' and the fragment separator '#'. If this is a |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 192 | * relative URI, this method returns the entire URI. Leaves escaped octets |
| 193 | * intact. |
| 194 | * |
| 195 | * <p>Example: "//www.google.com/search?q=android" |
| 196 | * |
| 197 | * @return the decoded scheme-specific-part |
| 198 | */ |
| 199 | public abstract String getEncodedSchemeSpecificPart(); |
| 200 | |
| 201 | /** |
| 202 | * Gets the decoded authority part of this URI. For |
| 203 | * server addresses, the authority is structured as follows: |
| 204 | * {@code [ userinfo '@' ] host [ ':' port ]} |
| 205 | * |
| 206 | * <p>Examples: "google.com", "bob@google.com:80" |
| 207 | * |
| 208 | * @return the authority for this URI or null if not present |
| 209 | */ |
| 210 | public abstract String getAuthority(); |
| 211 | |
| 212 | /** |
| 213 | * Gets the encoded authority part of this URI. For |
| 214 | * server addresses, the authority is structured as follows: |
| 215 | * {@code [ userinfo '@' ] host [ ':' port ]} |
| 216 | * |
| 217 | * <p>Examples: "google.com", "bob@google.com:80" |
| 218 | * |
| 219 | * @return the authority for this URI or null if not present |
| 220 | */ |
| 221 | public abstract String getEncodedAuthority(); |
| 222 | |
| 223 | /** |
| 224 | * Gets the decoded user information from the authority. |
| 225 | * For example, if the authority is "nobody@google.com", this method will |
| 226 | * return "nobody". |
| 227 | * |
| 228 | * @return the user info for this URI or null if not present |
| 229 | */ |
| 230 | public abstract String getUserInfo(); |
| 231 | |
| 232 | /** |
| 233 | * Gets the encoded user information from the authority. |
| 234 | * For example, if the authority is "nobody@google.com", this method will |
| 235 | * return "nobody". |
| 236 | * |
| 237 | * @return the user info for this URI or null if not present |
| 238 | */ |
| 239 | public abstract String getEncodedUserInfo(); |
| 240 | |
| 241 | /** |
| 242 | * Gets the encoded host from the authority for this URI. For example, |
| 243 | * if the authority is "bob@google.com", this method will return |
| 244 | * "google.com". |
| 245 | * |
| 246 | * @return the host for this URI or null if not present |
| 247 | */ |
| 248 | public abstract String getHost(); |
| 249 | |
| 250 | /** |
| 251 | * Gets the port from the authority for this URI. For example, |
| 252 | * if the authority is "google.com:80", this method will return 80. |
| 253 | * |
| 254 | * @return the port for this URI or -1 if invalid or not present |
| 255 | */ |
| 256 | public abstract int getPort(); |
| 257 | |
| 258 | /** |
| 259 | * Gets the decoded path. |
| 260 | * |
| 261 | * @return the decoded path, or null if this is not a hierarchical URI |
| 262 | * (like "mailto:nobody@google.com") or the URI is invalid |
| 263 | */ |
| 264 | public abstract String getPath(); |
| 265 | |
| 266 | /** |
| 267 | * Gets the encoded path. |
| 268 | * |
| 269 | * @return the encoded path, or null if this is not a hierarchical URI |
| 270 | * (like "mailto:nobody@google.com") or the URI is invalid |
| 271 | */ |
| 272 | public abstract String getEncodedPath(); |
| 273 | |
| 274 | /** |
| 275 | * Gets the decoded query component from this URI. The query comes after |
| 276 | * the query separator ('?') and before the fragment separator ('#'). This |
| 277 | * method would return "q=android" for |
| 278 | * "http://www.google.com/search?q=android". |
| 279 | * |
| 280 | * @return the decoded query or null if there isn't one |
| 281 | */ |
| 282 | public abstract String getQuery(); |
| 283 | |
| 284 | /** |
| 285 | * Gets the encoded query component from this URI. The query comes after |
| 286 | * the query separator ('?') and before the fragment separator ('#'). This |
| 287 | * method would return "q=android" for |
| 288 | * "http://www.google.com/search?q=android". |
| 289 | * |
| 290 | * @return the encoded query or null if there isn't one |
| 291 | */ |
| 292 | public abstract String getEncodedQuery(); |
| 293 | |
| 294 | /** |
| 295 | * Gets the decoded fragment part of this URI, everything after the '#'. |
| 296 | * |
| 297 | * @return the decoded fragment or null if there isn't one |
| 298 | */ |
| 299 | public abstract String getFragment(); |
| 300 | |
| 301 | /** |
| 302 | * Gets the encoded fragment part of this URI, everything after the '#'. |
| 303 | * |
| 304 | * @return the encoded fragment or null if there isn't one |
| 305 | */ |
| 306 | public abstract String getEncodedFragment(); |
| 307 | |
| 308 | /** |
| 309 | * Gets the decoded path segments. |
| 310 | * |
| 311 | * @return decoded path segments, each without a leading or trailing '/' |
| 312 | */ |
| 313 | public abstract List<String> getPathSegments(); |
| 314 | |
| 315 | /** |
| 316 | * Gets the decoded last segment in the path. |
| 317 | * |
| 318 | * @return the decoded last segment or null if the path is empty |
| 319 | */ |
| 320 | public abstract String getLastPathSegment(); |
| 321 | |
| 322 | /** |
| 323 | * Compares this Uri to another object for equality. Returns true if the |
| 324 | * encoded string representations of this Uri and the given Uri are |
| 325 | * equal. Case counts. Paths are not normalized. If one Uri specifies a |
| 326 | * default port explicitly and the other leaves it implicit, they will not |
| 327 | * be considered equal. |
| 328 | */ |
| 329 | public boolean equals(Object o) { |
| 330 | if (!(o instanceof Uri)) { |
| 331 | return false; |
| 332 | } |
| 333 | |
| 334 | Uri other = (Uri) o; |
| 335 | |
| 336 | return toString().equals(other.toString()); |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * Hashes the encoded string represention of this Uri consistently with |
| 341 | * {@link #equals(Object)}. |
| 342 | */ |
| 343 | public int hashCode() { |
| 344 | return toString().hashCode(); |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Compares the string representation of this Uri with that of |
| 349 | * another. |
| 350 | */ |
| 351 | public int compareTo(Uri other) { |
| 352 | return toString().compareTo(other.toString()); |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Returns the encoded string representation of this URI. |
| 357 | * Example: "http://google.com/" |
| 358 | */ |
| 359 | public abstract String toString(); |
| 360 | |
| 361 | /** |
Dianne Hackborn | 90c52de | 2011-09-23 12:57:44 -0700 | [diff] [blame] | 362 | * Return a string representation of the URI that is safe to print |
| 363 | * to logs and other places where PII should be avoided. |
| 364 | * @hide |
| 365 | */ |
| 366 | public String toSafeString() { |
| 367 | String scheme = getScheme(); |
| 368 | String ssp = getSchemeSpecificPart(); |
| 369 | if (scheme != null) { |
| 370 | if (scheme.equalsIgnoreCase("tel") || scheme.equalsIgnoreCase("sip") |
| 371 | || scheme.equalsIgnoreCase("sms") || scheme.equalsIgnoreCase("smsto") |
| 372 | || scheme.equalsIgnoreCase("mailto")) { |
| 373 | StringBuilder builder = new StringBuilder(64); |
| 374 | builder.append(scheme); |
| 375 | builder.append(':'); |
| 376 | if (ssp != null) { |
| 377 | for (int i=0; i<ssp.length(); i++) { |
| 378 | char c = ssp.charAt(i); |
| 379 | if (c == '-' || c == '@' || c == '.') { |
| 380 | builder.append(c); |
| 381 | } else { |
| 382 | builder.append('x'); |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | return builder.toString(); |
Alex Klyubin | 3f24a1d | 2015-04-01 10:59:29 -0700 | [diff] [blame] | 387 | } else if (scheme.equalsIgnoreCase("http") || scheme.equalsIgnoreCase("https") |
| 388 | || scheme.equalsIgnoreCase("ftp")) { |
| 389 | ssp = "//" + ((getHost() != null) ? getHost() : "") |
| 390 | + ((getPort() != -1) ? (":" + getPort()) : "") |
| 391 | + "/..."; |
Dianne Hackborn | 90c52de | 2011-09-23 12:57:44 -0700 | [diff] [blame] | 392 | } |
| 393 | } |
| 394 | // Not a sensitive scheme, but let's still be conservative about |
| 395 | // the data we include -- only the ssp, not the query params or |
| 396 | // fragment, because those can often have sensitive info. |
| 397 | StringBuilder builder = new StringBuilder(64); |
| 398 | if (scheme != null) { |
| 399 | builder.append(scheme); |
| 400 | builder.append(':'); |
| 401 | } |
| 402 | if (ssp != null) { |
| 403 | builder.append(ssp); |
| 404 | } |
| 405 | return builder.toString(); |
| 406 | } |
| 407 | |
| 408 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 409 | * Constructs a new builder, copying the attributes from this Uri. |
| 410 | */ |
| 411 | public abstract Builder buildUpon(); |
| 412 | |
| 413 | /** Index of a component which was not found. */ |
| 414 | private final static int NOT_FOUND = -1; |
| 415 | |
| 416 | /** Placeholder value for an index which hasn't been calculated yet. */ |
| 417 | private final static int NOT_CALCULATED = -2; |
| 418 | |
| 419 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 420 | * Error message presented when a user tries to treat an opaque URI as |
| 421 | * hierarchical. |
| 422 | */ |
| 423 | private static final String NOT_HIERARCHICAL |
| 424 | = "This isn't a hierarchical URI."; |
| 425 | |
| 426 | /** Default encoding. */ |
| 427 | private static final String DEFAULT_ENCODING = "UTF-8"; |
| 428 | |
| 429 | /** |
| 430 | * Creates a Uri which parses the given encoded URI string. |
| 431 | * |
Simon Schoar | 8aa393b | 2009-06-10 01:10:58 +0200 | [diff] [blame] | 432 | * @param uriString an RFC 2396-compliant, encoded URI |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 433 | * @throws NullPointerException if uriString is null |
| 434 | * @return Uri for this given uri string |
| 435 | */ |
| 436 | public static Uri parse(String uriString) { |
| 437 | return new StringUri(uriString); |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Creates a Uri from a file. The URI has the form |
| 442 | * "file://<absolute path>". Encodes path characters with the exception of |
| 443 | * '/'. |
| 444 | * |
| 445 | * <p>Example: "file:///tmp/android.txt" |
| 446 | * |
| 447 | * @throws NullPointerException if file is null |
| 448 | * @return a Uri for the given file |
| 449 | */ |
| 450 | public static Uri fromFile(File file) { |
| 451 | if (file == null) { |
| 452 | throw new NullPointerException("file"); |
| 453 | } |
| 454 | |
| 455 | PathPart path = PathPart.fromDecoded(file.getAbsolutePath()); |
| 456 | return new HierarchicalUri( |
| 457 | "file", Part.EMPTY, path, Part.NULL, Part.NULL); |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * An implementation which wraps a String URI. This URI can be opaque or |
| 462 | * hierarchical, but we extend AbstractHierarchicalUri in case we need |
| 463 | * the hierarchical functionality. |
| 464 | */ |
| 465 | private static class StringUri extends AbstractHierarchicalUri { |
| 466 | |
| 467 | /** Used in parcelling. */ |
| 468 | static final int TYPE_ID = 1; |
| 469 | |
| 470 | /** URI string representation. */ |
| 471 | private final String uriString; |
| 472 | |
| 473 | private StringUri(String uriString) { |
| 474 | if (uriString == null) { |
| 475 | throw new NullPointerException("uriString"); |
| 476 | } |
| 477 | |
| 478 | this.uriString = uriString; |
| 479 | } |
| 480 | |
| 481 | static Uri readFrom(Parcel parcel) { |
| 482 | return new StringUri(parcel.readString()); |
| 483 | } |
| 484 | |
| 485 | public int describeContents() { |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | public void writeToParcel(Parcel parcel, int flags) { |
| 490 | parcel.writeInt(TYPE_ID); |
| 491 | parcel.writeString(uriString); |
| 492 | } |
| 493 | |
| 494 | /** Cached scheme separator index. */ |
| 495 | private volatile int cachedSsi = NOT_CALCULATED; |
| 496 | |
| 497 | /** Finds the first ':'. Returns -1 if none found. */ |
| 498 | private int findSchemeSeparator() { |
| 499 | return cachedSsi == NOT_CALCULATED |
| 500 | ? cachedSsi = uriString.indexOf(':') |
| 501 | : cachedSsi; |
| 502 | } |
| 503 | |
| 504 | /** Cached fragment separator index. */ |
| 505 | private volatile int cachedFsi = NOT_CALCULATED; |
| 506 | |
| 507 | /** Finds the first '#'. Returns -1 if none found. */ |
| 508 | private int findFragmentSeparator() { |
| 509 | return cachedFsi == NOT_CALCULATED |
| 510 | ? cachedFsi = uriString.indexOf('#', findSchemeSeparator()) |
| 511 | : cachedFsi; |
| 512 | } |
| 513 | |
| 514 | public boolean isHierarchical() { |
| 515 | int ssi = findSchemeSeparator(); |
| 516 | |
| 517 | if (ssi == NOT_FOUND) { |
| 518 | // All relative URIs are hierarchical. |
| 519 | return true; |
| 520 | } |
| 521 | |
| 522 | if (uriString.length() == ssi + 1) { |
| 523 | // No ssp. |
| 524 | return false; |
| 525 | } |
| 526 | |
| 527 | // If the ssp starts with a '/', this is hierarchical. |
| 528 | return uriString.charAt(ssi + 1) == '/'; |
| 529 | } |
| 530 | |
| 531 | public boolean isRelative() { |
| 532 | // Note: We return true if the index is 0 |
| 533 | return findSchemeSeparator() == NOT_FOUND; |
| 534 | } |
| 535 | |
| 536 | private volatile String scheme = NOT_CACHED; |
| 537 | |
| 538 | public String getScheme() { |
| 539 | @SuppressWarnings("StringEquality") |
| 540 | boolean cached = (scheme != NOT_CACHED); |
| 541 | return cached ? scheme : (scheme = parseScheme()); |
| 542 | } |
| 543 | |
| 544 | private String parseScheme() { |
| 545 | int ssi = findSchemeSeparator(); |
| 546 | return ssi == NOT_FOUND ? null : uriString.substring(0, ssi); |
| 547 | } |
| 548 | |
| 549 | private Part ssp; |
| 550 | |
| 551 | private Part getSsp() { |
| 552 | return ssp == null ? ssp = Part.fromEncoded(parseSsp()) : ssp; |
| 553 | } |
| 554 | |
| 555 | public String getEncodedSchemeSpecificPart() { |
| 556 | return getSsp().getEncoded(); |
| 557 | } |
| 558 | |
| 559 | public String getSchemeSpecificPart() { |
| 560 | return getSsp().getDecoded(); |
| 561 | } |
| 562 | |
| 563 | private String parseSsp() { |
| 564 | int ssi = findSchemeSeparator(); |
| 565 | int fsi = findFragmentSeparator(); |
| 566 | |
| 567 | // Return everything between ssi and fsi. |
| 568 | return fsi == NOT_FOUND |
| 569 | ? uriString.substring(ssi + 1) |
| 570 | : uriString.substring(ssi + 1, fsi); |
| 571 | } |
| 572 | |
| 573 | private Part authority; |
| 574 | |
| 575 | private Part getAuthorityPart() { |
| 576 | if (authority == null) { |
| 577 | String encodedAuthority |
| 578 | = parseAuthority(this.uriString, findSchemeSeparator()); |
| 579 | return authority = Part.fromEncoded(encodedAuthority); |
| 580 | } |
| 581 | |
| 582 | return authority; |
| 583 | } |
| 584 | |
| 585 | public String getEncodedAuthority() { |
| 586 | return getAuthorityPart().getEncoded(); |
| 587 | } |
| 588 | |
| 589 | public String getAuthority() { |
| 590 | return getAuthorityPart().getDecoded(); |
| 591 | } |
| 592 | |
| 593 | private PathPart path; |
| 594 | |
| 595 | private PathPart getPathPart() { |
| 596 | return path == null |
| 597 | ? path = PathPart.fromEncoded(parsePath()) |
| 598 | : path; |
| 599 | } |
| 600 | |
| 601 | public String getPath() { |
| 602 | return getPathPart().getDecoded(); |
| 603 | } |
| 604 | |
| 605 | public String getEncodedPath() { |
| 606 | return getPathPart().getEncoded(); |
| 607 | } |
| 608 | |
| 609 | public List<String> getPathSegments() { |
| 610 | return getPathPart().getPathSegments(); |
| 611 | } |
| 612 | |
| 613 | private String parsePath() { |
| 614 | String uriString = this.uriString; |
| 615 | int ssi = findSchemeSeparator(); |
| 616 | |
| 617 | // If the URI is absolute. |
| 618 | if (ssi > -1) { |
| 619 | // Is there anything after the ':'? |
| 620 | boolean schemeOnly = ssi + 1 == uriString.length(); |
| 621 | if (schemeOnly) { |
| 622 | // Opaque URI. |
| 623 | return null; |
| 624 | } |
| 625 | |
| 626 | // A '/' after the ':' means this is hierarchical. |
| 627 | if (uriString.charAt(ssi + 1) != '/') { |
| 628 | // Opaque URI. |
| 629 | return null; |
| 630 | } |
| 631 | } else { |
| 632 | // All relative URIs are hierarchical. |
| 633 | } |
| 634 | |
| 635 | return parsePath(uriString, ssi); |
| 636 | } |
| 637 | |
| 638 | private Part query; |
| 639 | |
| 640 | private Part getQueryPart() { |
| 641 | return query == null |
| 642 | ? query = Part.fromEncoded(parseQuery()) : query; |
| 643 | } |
| 644 | |
| 645 | public String getEncodedQuery() { |
| 646 | return getQueryPart().getEncoded(); |
| 647 | } |
| 648 | |
| 649 | private String parseQuery() { |
| 650 | // It doesn't make sense to cache this index. We only ever |
| 651 | // calculate it once. |
| 652 | int qsi = uriString.indexOf('?', findSchemeSeparator()); |
| 653 | if (qsi == NOT_FOUND) { |
| 654 | return null; |
| 655 | } |
| 656 | |
| 657 | int fsi = findFragmentSeparator(); |
| 658 | |
| 659 | if (fsi == NOT_FOUND) { |
| 660 | return uriString.substring(qsi + 1); |
| 661 | } |
| 662 | |
| 663 | if (fsi < qsi) { |
| 664 | // Invalid. |
| 665 | return null; |
| 666 | } |
| 667 | |
| 668 | return uriString.substring(qsi + 1, fsi); |
| 669 | } |
| 670 | |
| 671 | public String getQuery() { |
| 672 | return getQueryPart().getDecoded(); |
| 673 | } |
| 674 | |
| 675 | private Part fragment; |
| 676 | |
| 677 | private Part getFragmentPart() { |
| 678 | return fragment == null |
| 679 | ? fragment = Part.fromEncoded(parseFragment()) : fragment; |
| 680 | } |
| 681 | |
| 682 | public String getEncodedFragment() { |
| 683 | return getFragmentPart().getEncoded(); |
| 684 | } |
| 685 | |
| 686 | private String parseFragment() { |
| 687 | int fsi = findFragmentSeparator(); |
| 688 | return fsi == NOT_FOUND ? null : uriString.substring(fsi + 1); |
| 689 | } |
| 690 | |
| 691 | public String getFragment() { |
| 692 | return getFragmentPart().getDecoded(); |
| 693 | } |
| 694 | |
| 695 | public String toString() { |
| 696 | return uriString; |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Parses an authority out of the given URI string. |
| 701 | * |
| 702 | * @param uriString URI string |
| 703 | * @param ssi scheme separator index, -1 for a relative URI |
| 704 | * |
| 705 | * @return the authority or null if none is found |
| 706 | */ |
| 707 | static String parseAuthority(String uriString, int ssi) { |
| 708 | int length = uriString.length(); |
| 709 | |
| 710 | // If "//" follows the scheme separator, we have an authority. |
| 711 | if (length > ssi + 2 |
| 712 | && uriString.charAt(ssi + 1) == '/' |
| 713 | && uriString.charAt(ssi + 2) == '/') { |
| 714 | // We have an authority. |
| 715 | |
| 716 | // Look for the start of the path, query, or fragment, or the |
| 717 | // end of the string. |
| 718 | int end = ssi + 3; |
| 719 | LOOP: while (end < length) { |
| 720 | switch (uriString.charAt(end)) { |
| 721 | case '/': // Start of path |
| 722 | case '?': // Start of query |
| 723 | case '#': // Start of fragment |
| 724 | break LOOP; |
| 725 | } |
| 726 | end++; |
| 727 | } |
| 728 | |
| 729 | return uriString.substring(ssi + 3, end); |
| 730 | } else { |
| 731 | return null; |
| 732 | } |
| 733 | |
| 734 | } |
| 735 | |
| 736 | /** |
| 737 | * Parses a path out of this given URI string. |
| 738 | * |
| 739 | * @param uriString URI string |
| 740 | * @param ssi scheme separator index, -1 for a relative URI |
| 741 | * |
| 742 | * @return the path |
| 743 | */ |
| 744 | static String parsePath(String uriString, int ssi) { |
| 745 | int length = uriString.length(); |
| 746 | |
| 747 | // Find start of path. |
| 748 | int pathStart; |
| 749 | if (length > ssi + 2 |
| 750 | && uriString.charAt(ssi + 1) == '/' |
| 751 | && uriString.charAt(ssi + 2) == '/') { |
| 752 | // Skip over authority to path. |
| 753 | pathStart = ssi + 3; |
| 754 | LOOP: while (pathStart < length) { |
| 755 | switch (uriString.charAt(pathStart)) { |
| 756 | case '?': // Start of query |
| 757 | case '#': // Start of fragment |
| 758 | return ""; // Empty path. |
| 759 | case '/': // Start of path! |
| 760 | break LOOP; |
| 761 | } |
| 762 | pathStart++; |
| 763 | } |
| 764 | } else { |
| 765 | // Path starts immediately after scheme separator. |
| 766 | pathStart = ssi + 1; |
| 767 | } |
| 768 | |
| 769 | // Find end of path. |
| 770 | int pathEnd = pathStart; |
| 771 | LOOP: while (pathEnd < length) { |
| 772 | switch (uriString.charAt(pathEnd)) { |
| 773 | case '?': // Start of query |
| 774 | case '#': // Start of fragment |
| 775 | break LOOP; |
| 776 | } |
| 777 | pathEnd++; |
| 778 | } |
| 779 | |
| 780 | return uriString.substring(pathStart, pathEnd); |
| 781 | } |
| 782 | |
| 783 | public Builder buildUpon() { |
| 784 | if (isHierarchical()) { |
| 785 | return new Builder() |
| 786 | .scheme(getScheme()) |
| 787 | .authority(getAuthorityPart()) |
| 788 | .path(getPathPart()) |
| 789 | .query(getQueryPart()) |
| 790 | .fragment(getFragmentPart()); |
| 791 | } else { |
| 792 | return new Builder() |
| 793 | .scheme(getScheme()) |
| 794 | .opaquePart(getSsp()) |
| 795 | .fragment(getFragmentPart()); |
| 796 | } |
| 797 | } |
| 798 | } |
| 799 | |
| 800 | /** |
| 801 | * Creates an opaque Uri from the given components. Encodes the ssp |
| 802 | * which means this method cannot be used to create hierarchical URIs. |
| 803 | * |
| 804 | * @param scheme of the URI |
| 805 | * @param ssp scheme-specific-part, everything between the |
| 806 | * scheme separator (':') and the fragment separator ('#'), which will |
| 807 | * get encoded |
| 808 | * @param fragment fragment, everything after the '#', null if undefined, |
| 809 | * will get encoded |
| 810 | * |
| 811 | * @throws NullPointerException if scheme or ssp is null |
| 812 | * @return Uri composed of the given scheme, ssp, and fragment |
| 813 | * |
| 814 | * @see Builder if you don't want the ssp and fragment to be encoded |
| 815 | */ |
| 816 | public static Uri fromParts(String scheme, String ssp, |
| 817 | String fragment) { |
| 818 | if (scheme == null) { |
| 819 | throw new NullPointerException("scheme"); |
| 820 | } |
| 821 | if (ssp == null) { |
| 822 | throw new NullPointerException("ssp"); |
| 823 | } |
| 824 | |
| 825 | return new OpaqueUri(scheme, Part.fromDecoded(ssp), |
| 826 | Part.fromDecoded(fragment)); |
| 827 | } |
| 828 | |
| 829 | /** |
| 830 | * Opaque URI. |
| 831 | */ |
| 832 | private static class OpaqueUri extends Uri { |
| 833 | |
| 834 | /** Used in parcelling. */ |
| 835 | static final int TYPE_ID = 2; |
| 836 | |
| 837 | private final String scheme; |
| 838 | private final Part ssp; |
| 839 | private final Part fragment; |
| 840 | |
| 841 | private OpaqueUri(String scheme, Part ssp, Part fragment) { |
| 842 | this.scheme = scheme; |
| 843 | this.ssp = ssp; |
| 844 | this.fragment = fragment == null ? Part.NULL : fragment; |
| 845 | } |
| 846 | |
| 847 | static Uri readFrom(Parcel parcel) { |
| 848 | return new OpaqueUri( |
| 849 | parcel.readString(), |
| 850 | Part.readFrom(parcel), |
| 851 | Part.readFrom(parcel) |
| 852 | ); |
| 853 | } |
| 854 | |
| 855 | public int describeContents() { |
| 856 | return 0; |
| 857 | } |
| 858 | |
| 859 | public void writeToParcel(Parcel parcel, int flags) { |
| 860 | parcel.writeInt(TYPE_ID); |
| 861 | parcel.writeString(scheme); |
| 862 | ssp.writeTo(parcel); |
| 863 | fragment.writeTo(parcel); |
| 864 | } |
| 865 | |
| 866 | public boolean isHierarchical() { |
| 867 | return false; |
| 868 | } |
| 869 | |
| 870 | public boolean isRelative() { |
| 871 | return scheme == null; |
| 872 | } |
| 873 | |
| 874 | public String getScheme() { |
| 875 | return this.scheme; |
| 876 | } |
| 877 | |
| 878 | public String getEncodedSchemeSpecificPart() { |
| 879 | return ssp.getEncoded(); |
| 880 | } |
| 881 | |
| 882 | public String getSchemeSpecificPart() { |
| 883 | return ssp.getDecoded(); |
| 884 | } |
| 885 | |
| 886 | public String getAuthority() { |
| 887 | return null; |
| 888 | } |
| 889 | |
| 890 | public String getEncodedAuthority() { |
| 891 | return null; |
| 892 | } |
| 893 | |
| 894 | public String getPath() { |
| 895 | return null; |
| 896 | } |
| 897 | |
| 898 | public String getEncodedPath() { |
| 899 | return null; |
| 900 | } |
| 901 | |
| 902 | public String getQuery() { |
| 903 | return null; |
| 904 | } |
| 905 | |
| 906 | public String getEncodedQuery() { |
| 907 | return null; |
| 908 | } |
| 909 | |
| 910 | public String getFragment() { |
| 911 | return fragment.getDecoded(); |
| 912 | } |
| 913 | |
| 914 | public String getEncodedFragment() { |
| 915 | return fragment.getEncoded(); |
| 916 | } |
| 917 | |
| 918 | public List<String> getPathSegments() { |
| 919 | return Collections.emptyList(); |
| 920 | } |
| 921 | |
| 922 | public String getLastPathSegment() { |
| 923 | return null; |
| 924 | } |
| 925 | |
| 926 | public String getUserInfo() { |
| 927 | return null; |
| 928 | } |
| 929 | |
| 930 | public String getEncodedUserInfo() { |
| 931 | return null; |
| 932 | } |
| 933 | |
| 934 | public String getHost() { |
| 935 | return null; |
| 936 | } |
| 937 | |
| 938 | public int getPort() { |
| 939 | return -1; |
| 940 | } |
| 941 | |
| 942 | private volatile String cachedString = NOT_CACHED; |
| 943 | |
| 944 | public String toString() { |
| 945 | @SuppressWarnings("StringEquality") |
| 946 | boolean cached = cachedString != NOT_CACHED; |
| 947 | if (cached) { |
| 948 | return cachedString; |
| 949 | } |
| 950 | |
| 951 | StringBuilder sb = new StringBuilder(); |
| 952 | |
| 953 | sb.append(scheme).append(':'); |
| 954 | sb.append(getEncodedSchemeSpecificPart()); |
| 955 | |
| 956 | if (!fragment.isEmpty()) { |
| 957 | sb.append('#').append(fragment.getEncoded()); |
| 958 | } |
| 959 | |
| 960 | return cachedString = sb.toString(); |
| 961 | } |
| 962 | |
| 963 | public Builder buildUpon() { |
| 964 | return new Builder() |
| 965 | .scheme(this.scheme) |
| 966 | .opaquePart(this.ssp) |
| 967 | .fragment(this.fragment); |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | /** |
| 972 | * Wrapper for path segment array. |
| 973 | */ |
| 974 | static class PathSegments extends AbstractList<String> |
| 975 | implements RandomAccess { |
| 976 | |
| 977 | static final PathSegments EMPTY = new PathSegments(null, 0); |
| 978 | |
| 979 | final String[] segments; |
| 980 | final int size; |
| 981 | |
| 982 | PathSegments(String[] segments, int size) { |
| 983 | this.segments = segments; |
| 984 | this.size = size; |
| 985 | } |
| 986 | |
| 987 | public String get(int index) { |
| 988 | if (index >= size) { |
| 989 | throw new IndexOutOfBoundsException(); |
| 990 | } |
| 991 | |
| 992 | return segments[index]; |
| 993 | } |
| 994 | |
| 995 | public int size() { |
| 996 | return this.size; |
| 997 | } |
| 998 | } |
| 999 | |
| 1000 | /** |
| 1001 | * Builds PathSegments. |
| 1002 | */ |
| 1003 | static class PathSegmentsBuilder { |
| 1004 | |
| 1005 | String[] segments; |
| 1006 | int size = 0; |
| 1007 | |
| 1008 | void add(String segment) { |
| 1009 | if (segments == null) { |
| 1010 | segments = new String[4]; |
| 1011 | } else if (size + 1 == segments.length) { |
| 1012 | String[] expanded = new String[segments.length * 2]; |
| 1013 | System.arraycopy(segments, 0, expanded, 0, segments.length); |
| 1014 | segments = expanded; |
| 1015 | } |
| 1016 | |
| 1017 | segments[size++] = segment; |
| 1018 | } |
| 1019 | |
| 1020 | PathSegments build() { |
| 1021 | if (segments == null) { |
| 1022 | return PathSegments.EMPTY; |
| 1023 | } |
| 1024 | |
| 1025 | try { |
| 1026 | return new PathSegments(segments, size); |
| 1027 | } finally { |
| 1028 | // Makes sure this doesn't get reused. |
| 1029 | segments = null; |
| 1030 | } |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | /** |
| 1035 | * Support for hierarchical URIs. |
| 1036 | */ |
| 1037 | private abstract static class AbstractHierarchicalUri extends Uri { |
| 1038 | |
| 1039 | public String getLastPathSegment() { |
| 1040 | // TODO: If we haven't parsed all of the segments already, just |
| 1041 | // grab the last one directly so we only allocate one string. |
| 1042 | |
| 1043 | List<String> segments = getPathSegments(); |
| 1044 | int size = segments.size(); |
| 1045 | if (size == 0) { |
| 1046 | return null; |
| 1047 | } |
| 1048 | return segments.get(size - 1); |
| 1049 | } |
| 1050 | |
| 1051 | private Part userInfo; |
| 1052 | |
| 1053 | private Part getUserInfoPart() { |
| 1054 | return userInfo == null |
| 1055 | ? userInfo = Part.fromEncoded(parseUserInfo()) : userInfo; |
| 1056 | } |
| 1057 | |
| 1058 | public final String getEncodedUserInfo() { |
| 1059 | return getUserInfoPart().getEncoded(); |
| 1060 | } |
| 1061 | |
| 1062 | private String parseUserInfo() { |
| 1063 | String authority = getEncodedAuthority(); |
| 1064 | if (authority == null) { |
| 1065 | return null; |
| 1066 | } |
| 1067 | |
| 1068 | int end = authority.indexOf('@'); |
| 1069 | return end == NOT_FOUND ? null : authority.substring(0, end); |
| 1070 | } |
| 1071 | |
| 1072 | public String getUserInfo() { |
| 1073 | return getUserInfoPart().getDecoded(); |
| 1074 | } |
| 1075 | |
| 1076 | private volatile String host = NOT_CACHED; |
| 1077 | |
| 1078 | public String getHost() { |
| 1079 | @SuppressWarnings("StringEquality") |
| 1080 | boolean cached = (host != NOT_CACHED); |
| 1081 | return cached ? host |
| 1082 | : (host = parseHost()); |
| 1083 | } |
| 1084 | |
| 1085 | private String parseHost() { |
Kenny Root | fc01794 | 2009-07-12 10:33:28 -0500 | [diff] [blame] | 1086 | String authority = getEncodedAuthority(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1087 | if (authority == null) { |
| 1088 | return null; |
| 1089 | } |
| 1090 | |
| 1091 | // Parse out user info and then port. |
| 1092 | int userInfoSeparator = authority.indexOf('@'); |
| 1093 | int portSeparator = authority.indexOf(':', userInfoSeparator); |
| 1094 | |
Kenny Root | fc01794 | 2009-07-12 10:33:28 -0500 | [diff] [blame] | 1095 | String encodedHost = portSeparator == NOT_FOUND |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1096 | ? authority.substring(userInfoSeparator + 1) |
| 1097 | : authority.substring(userInfoSeparator + 1, portSeparator); |
Kenny Root | fc01794 | 2009-07-12 10:33:28 -0500 | [diff] [blame] | 1098 | |
| 1099 | return decode(encodedHost); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | private volatile int port = NOT_CALCULATED; |
| 1103 | |
| 1104 | public int getPort() { |
| 1105 | return port == NOT_CALCULATED |
| 1106 | ? port = parsePort() |
| 1107 | : port; |
| 1108 | } |
| 1109 | |
| 1110 | private int parsePort() { |
Kenny Root | fc01794 | 2009-07-12 10:33:28 -0500 | [diff] [blame] | 1111 | String authority = getEncodedAuthority(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1112 | if (authority == null) { |
| 1113 | return -1; |
| 1114 | } |
| 1115 | |
| 1116 | // Make sure we look for the port separtor *after* the user info |
| 1117 | // separator. We have URLs with a ':' in the user info. |
| 1118 | int userInfoSeparator = authority.indexOf('@'); |
| 1119 | int portSeparator = authority.indexOf(':', userInfoSeparator); |
| 1120 | |
| 1121 | if (portSeparator == NOT_FOUND) { |
| 1122 | return -1; |
| 1123 | } |
| 1124 | |
Kenny Root | fc01794 | 2009-07-12 10:33:28 -0500 | [diff] [blame] | 1125 | String portString = decode(authority.substring(portSeparator + 1)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1126 | try { |
| 1127 | return Integer.parseInt(portString); |
| 1128 | } catch (NumberFormatException e) { |
| 1129 | Log.w(LOG, "Error parsing port string.", e); |
| 1130 | return -1; |
| 1131 | } |
| 1132 | } |
| 1133 | } |
| 1134 | |
| 1135 | /** |
| 1136 | * Hierarchical Uri. |
| 1137 | */ |
| 1138 | private static class HierarchicalUri extends AbstractHierarchicalUri { |
| 1139 | |
| 1140 | /** Used in parcelling. */ |
| 1141 | static final int TYPE_ID = 3; |
| 1142 | |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1143 | private final String scheme; // can be null |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1144 | private final Part authority; |
| 1145 | private final PathPart path; |
| 1146 | private final Part query; |
| 1147 | private final Part fragment; |
| 1148 | |
| 1149 | private HierarchicalUri(String scheme, Part authority, PathPart path, |
| 1150 | Part query, Part fragment) { |
| 1151 | this.scheme = scheme; |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1152 | this.authority = Part.nonNull(authority); |
| 1153 | this.path = path == null ? PathPart.NULL : path; |
| 1154 | this.query = Part.nonNull(query); |
| 1155 | this.fragment = Part.nonNull(fragment); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1156 | } |
| 1157 | |
| 1158 | static Uri readFrom(Parcel parcel) { |
| 1159 | return new HierarchicalUri( |
| 1160 | parcel.readString(), |
| 1161 | Part.readFrom(parcel), |
| 1162 | PathPart.readFrom(parcel), |
| 1163 | Part.readFrom(parcel), |
| 1164 | Part.readFrom(parcel) |
| 1165 | ); |
| 1166 | } |
| 1167 | |
| 1168 | public int describeContents() { |
| 1169 | return 0; |
| 1170 | } |
| 1171 | |
| 1172 | public void writeToParcel(Parcel parcel, int flags) { |
| 1173 | parcel.writeInt(TYPE_ID); |
| 1174 | parcel.writeString(scheme); |
| 1175 | authority.writeTo(parcel); |
| 1176 | path.writeTo(parcel); |
| 1177 | query.writeTo(parcel); |
| 1178 | fragment.writeTo(parcel); |
| 1179 | } |
| 1180 | |
| 1181 | public boolean isHierarchical() { |
| 1182 | return true; |
| 1183 | } |
| 1184 | |
| 1185 | public boolean isRelative() { |
| 1186 | return scheme == null; |
| 1187 | } |
| 1188 | |
| 1189 | public String getScheme() { |
| 1190 | return scheme; |
| 1191 | } |
| 1192 | |
| 1193 | private Part ssp; |
| 1194 | |
| 1195 | private Part getSsp() { |
| 1196 | return ssp == null |
| 1197 | ? ssp = Part.fromEncoded(makeSchemeSpecificPart()) : ssp; |
| 1198 | } |
| 1199 | |
| 1200 | public String getEncodedSchemeSpecificPart() { |
| 1201 | return getSsp().getEncoded(); |
| 1202 | } |
| 1203 | |
| 1204 | public String getSchemeSpecificPart() { |
| 1205 | return getSsp().getDecoded(); |
| 1206 | } |
| 1207 | |
| 1208 | /** |
| 1209 | * Creates the encoded scheme-specific part from its sub parts. |
| 1210 | */ |
| 1211 | private String makeSchemeSpecificPart() { |
| 1212 | StringBuilder builder = new StringBuilder(); |
| 1213 | appendSspTo(builder); |
| 1214 | return builder.toString(); |
| 1215 | } |
| 1216 | |
| 1217 | private void appendSspTo(StringBuilder builder) { |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1218 | String encodedAuthority = authority.getEncoded(); |
| 1219 | if (encodedAuthority != null) { |
| 1220 | // Even if the authority is "", we still want to append "//". |
| 1221 | builder.append("//").append(encodedAuthority); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1222 | } |
| 1223 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1224 | String encodedPath = path.getEncoded(); |
| 1225 | if (encodedPath != null) { |
| 1226 | builder.append(encodedPath); |
| 1227 | } |
| 1228 | |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1229 | if (!query.isEmpty()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1230 | builder.append('?').append(query.getEncoded()); |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | public String getAuthority() { |
| 1235 | return this.authority.getDecoded(); |
| 1236 | } |
| 1237 | |
| 1238 | public String getEncodedAuthority() { |
| 1239 | return this.authority.getEncoded(); |
| 1240 | } |
| 1241 | |
| 1242 | public String getEncodedPath() { |
| 1243 | return this.path.getEncoded(); |
| 1244 | } |
| 1245 | |
| 1246 | public String getPath() { |
| 1247 | return this.path.getDecoded(); |
| 1248 | } |
| 1249 | |
| 1250 | public String getQuery() { |
| 1251 | return this.query.getDecoded(); |
| 1252 | } |
| 1253 | |
| 1254 | public String getEncodedQuery() { |
| 1255 | return this.query.getEncoded(); |
| 1256 | } |
| 1257 | |
| 1258 | public String getFragment() { |
| 1259 | return this.fragment.getDecoded(); |
| 1260 | } |
| 1261 | |
| 1262 | public String getEncodedFragment() { |
| 1263 | return this.fragment.getEncoded(); |
| 1264 | } |
| 1265 | |
| 1266 | public List<String> getPathSegments() { |
| 1267 | return this.path.getPathSegments(); |
| 1268 | } |
| 1269 | |
| 1270 | private volatile String uriString = NOT_CACHED; |
| 1271 | |
| 1272 | @Override |
| 1273 | public String toString() { |
| 1274 | @SuppressWarnings("StringEquality") |
| 1275 | boolean cached = (uriString != NOT_CACHED); |
| 1276 | return cached ? uriString |
| 1277 | : (uriString = makeUriString()); |
| 1278 | } |
| 1279 | |
| 1280 | private String makeUriString() { |
| 1281 | StringBuilder builder = new StringBuilder(); |
| 1282 | |
| 1283 | if (scheme != null) { |
| 1284 | builder.append(scheme).append(':'); |
| 1285 | } |
| 1286 | |
| 1287 | appendSspTo(builder); |
| 1288 | |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1289 | if (!fragment.isEmpty()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1290 | builder.append('#').append(fragment.getEncoded()); |
| 1291 | } |
| 1292 | |
| 1293 | return builder.toString(); |
| 1294 | } |
| 1295 | |
| 1296 | public Builder buildUpon() { |
| 1297 | return new Builder() |
| 1298 | .scheme(scheme) |
| 1299 | .authority(authority) |
| 1300 | .path(path) |
| 1301 | .query(query) |
| 1302 | .fragment(fragment); |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | /** |
| 1307 | * Helper class for building or manipulating URI references. Not safe for |
| 1308 | * concurrent use. |
| 1309 | * |
| 1310 | * <p>An absolute hierarchical URI reference follows the pattern: |
Ben Dodson | 4e8620f | 2010-08-25 10:55:47 -0700 | [diff] [blame] | 1311 | * {@code <scheme>://<authority><absolute path>?<query>#<fragment>} |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1312 | * |
| 1313 | * <p>Relative URI references (which are always hierarchical) follow one |
Ben Dodson | 4e8620f | 2010-08-25 10:55:47 -0700 | [diff] [blame] | 1314 | * of two patterns: {@code <relative or absolute path>?<query>#<fragment>} |
| 1315 | * or {@code //<authority><absolute path>?<query>#<fragment>} |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1316 | * |
| 1317 | * <p>An opaque URI follows this pattern: |
Ben Dodson | 4e8620f | 2010-08-25 10:55:47 -0700 | [diff] [blame] | 1318 | * {@code <scheme>:<opaque part>#<fragment>} |
Jesse Wilson | 0f28af2 | 2011-10-28 18:27:44 -0400 | [diff] [blame] | 1319 | * |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1320 | * <p>Use {@link Uri#buildUpon()} to obtain a builder representing an existing URI. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1321 | */ |
| 1322 | public static final class Builder { |
| 1323 | |
| 1324 | private String scheme; |
| 1325 | private Part opaquePart; |
| 1326 | private Part authority; |
| 1327 | private PathPart path; |
| 1328 | private Part query; |
| 1329 | private Part fragment; |
| 1330 | |
| 1331 | /** |
| 1332 | * Constructs a new Builder. |
| 1333 | */ |
| 1334 | public Builder() {} |
| 1335 | |
| 1336 | /** |
| 1337 | * Sets the scheme. |
| 1338 | * |
| 1339 | * @param scheme name or {@code null} if this is a relative Uri |
| 1340 | */ |
| 1341 | public Builder scheme(String scheme) { |
| 1342 | this.scheme = scheme; |
| 1343 | return this; |
| 1344 | } |
| 1345 | |
| 1346 | Builder opaquePart(Part opaquePart) { |
| 1347 | this.opaquePart = opaquePart; |
| 1348 | return this; |
| 1349 | } |
| 1350 | |
| 1351 | /** |
| 1352 | * Encodes and sets the given opaque scheme-specific-part. |
| 1353 | * |
| 1354 | * @param opaquePart decoded opaque part |
| 1355 | */ |
| 1356 | public Builder opaquePart(String opaquePart) { |
| 1357 | return opaquePart(Part.fromDecoded(opaquePart)); |
| 1358 | } |
| 1359 | |
| 1360 | /** |
| 1361 | * Sets the previously encoded opaque scheme-specific-part. |
| 1362 | * |
| 1363 | * @param opaquePart encoded opaque part |
| 1364 | */ |
| 1365 | public Builder encodedOpaquePart(String opaquePart) { |
| 1366 | return opaquePart(Part.fromEncoded(opaquePart)); |
| 1367 | } |
| 1368 | |
| 1369 | Builder authority(Part authority) { |
| 1370 | // This URI will be hierarchical. |
| 1371 | this.opaquePart = null; |
| 1372 | |
| 1373 | this.authority = authority; |
| 1374 | return this; |
| 1375 | } |
| 1376 | |
| 1377 | /** |
| 1378 | * Encodes and sets the authority. |
| 1379 | */ |
| 1380 | public Builder authority(String authority) { |
| 1381 | return authority(Part.fromDecoded(authority)); |
| 1382 | } |
| 1383 | |
| 1384 | /** |
| 1385 | * Sets the previously encoded authority. |
| 1386 | */ |
| 1387 | public Builder encodedAuthority(String authority) { |
| 1388 | return authority(Part.fromEncoded(authority)); |
| 1389 | } |
| 1390 | |
| 1391 | Builder path(PathPart path) { |
| 1392 | // This URI will be hierarchical. |
| 1393 | this.opaquePart = null; |
| 1394 | |
| 1395 | this.path = path; |
| 1396 | return this; |
| 1397 | } |
| 1398 | |
| 1399 | /** |
| 1400 | * Sets the path. Leaves '/' characters intact but encodes others as |
| 1401 | * necessary. |
| 1402 | * |
| 1403 | * <p>If the path is not null and doesn't start with a '/', and if |
| 1404 | * you specify a scheme and/or authority, the builder will prepend the |
| 1405 | * given path with a '/'. |
| 1406 | */ |
| 1407 | public Builder path(String path) { |
| 1408 | return path(PathPart.fromDecoded(path)); |
| 1409 | } |
| 1410 | |
| 1411 | /** |
| 1412 | * Sets the previously encoded path. |
| 1413 | * |
| 1414 | * <p>If the path is not null and doesn't start with a '/', and if |
| 1415 | * you specify a scheme and/or authority, the builder will prepend the |
| 1416 | * given path with a '/'. |
| 1417 | */ |
| 1418 | public Builder encodedPath(String path) { |
| 1419 | return path(PathPart.fromEncoded(path)); |
| 1420 | } |
| 1421 | |
| 1422 | /** |
| 1423 | * Encodes the given segment and appends it to the path. |
| 1424 | */ |
| 1425 | public Builder appendPath(String newSegment) { |
| 1426 | return path(PathPart.appendDecodedSegment(path, newSegment)); |
| 1427 | } |
| 1428 | |
| 1429 | /** |
| 1430 | * Appends the given segment to the path. |
| 1431 | */ |
| 1432 | public Builder appendEncodedPath(String newSegment) { |
| 1433 | return path(PathPart.appendEncodedSegment(path, newSegment)); |
| 1434 | } |
| 1435 | |
| 1436 | Builder query(Part query) { |
| 1437 | // This URI will be hierarchical. |
| 1438 | this.opaquePart = null; |
| 1439 | |
| 1440 | this.query = query; |
| 1441 | return this; |
| 1442 | } |
| 1443 | |
| 1444 | /** |
| 1445 | * Encodes and sets the query. |
| 1446 | */ |
| 1447 | public Builder query(String query) { |
| 1448 | return query(Part.fromDecoded(query)); |
| 1449 | } |
| 1450 | |
| 1451 | /** |
| 1452 | * Sets the previously encoded query. |
| 1453 | */ |
| 1454 | public Builder encodedQuery(String query) { |
| 1455 | return query(Part.fromEncoded(query)); |
| 1456 | } |
| 1457 | |
| 1458 | Builder fragment(Part fragment) { |
| 1459 | this.fragment = fragment; |
| 1460 | return this; |
| 1461 | } |
| 1462 | |
| 1463 | /** |
| 1464 | * Encodes and sets the fragment. |
| 1465 | */ |
| 1466 | public Builder fragment(String fragment) { |
| 1467 | return fragment(Part.fromDecoded(fragment)); |
| 1468 | } |
| 1469 | |
| 1470 | /** |
| 1471 | * Sets the previously encoded fragment. |
| 1472 | */ |
| 1473 | public Builder encodedFragment(String fragment) { |
| 1474 | return fragment(Part.fromEncoded(fragment)); |
| 1475 | } |
| 1476 | |
| 1477 | /** |
| 1478 | * Encodes the key and value and then appends the parameter to the |
| 1479 | * query string. |
| 1480 | * |
| 1481 | * @param key which will be encoded |
| 1482 | * @param value which will be encoded |
| 1483 | */ |
| 1484 | public Builder appendQueryParameter(String key, String value) { |
| 1485 | // This URI will be hierarchical. |
| 1486 | this.opaquePart = null; |
| 1487 | |
| 1488 | String encodedParameter = encode(key, null) + "=" |
| 1489 | + encode(value, null); |
| 1490 | |
| 1491 | if (query == null) { |
| 1492 | query = Part.fromEncoded(encodedParameter); |
| 1493 | return this; |
| 1494 | } |
| 1495 | |
| 1496 | String oldQuery = query.getEncoded(); |
| 1497 | if (oldQuery == null || oldQuery.length() == 0) { |
| 1498 | query = Part.fromEncoded(encodedParameter); |
| 1499 | } else { |
| 1500 | query = Part.fromEncoded(oldQuery + "&" + encodedParameter); |
| 1501 | } |
| 1502 | |
| 1503 | return this; |
| 1504 | } |
| 1505 | |
| 1506 | /** |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1507 | * Clears the the previously set query. |
| 1508 | */ |
| 1509 | public Builder clearQuery() { |
| 1510 | return query((Part) null); |
| 1511 | } |
| 1512 | |
| 1513 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1514 | * Constructs a Uri with the current attributes. |
| 1515 | * |
| 1516 | * @throws UnsupportedOperationException if the URI is opaque and the |
| 1517 | * scheme is null |
| 1518 | */ |
| 1519 | public Uri build() { |
| 1520 | if (opaquePart != null) { |
| 1521 | if (this.scheme == null) { |
| 1522 | throw new UnsupportedOperationException( |
| 1523 | "An opaque URI must have a scheme."); |
| 1524 | } |
| 1525 | |
| 1526 | return new OpaqueUri(scheme, opaquePart, fragment); |
| 1527 | } else { |
| 1528 | // Hierarchical URIs should not return null for getPath(). |
| 1529 | PathPart path = this.path; |
| 1530 | if (path == null || path == PathPart.NULL) { |
| 1531 | path = PathPart.EMPTY; |
| 1532 | } else { |
| 1533 | // If we have a scheme and/or authority, the path must |
| 1534 | // be absolute. Prepend it with a '/' if necessary. |
| 1535 | if (hasSchemeOrAuthority()) { |
| 1536 | path = PathPart.makeAbsolute(path); |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | return new HierarchicalUri( |
| 1541 | scheme, authority, path, query, fragment); |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | private boolean hasSchemeOrAuthority() { |
| 1546 | return scheme != null |
| 1547 | || (authority != null && authority != Part.NULL); |
| 1548 | |
| 1549 | } |
| 1550 | |
| 1551 | @Override |
| 1552 | public String toString() { |
| 1553 | return build().toString(); |
| 1554 | } |
| 1555 | } |
| 1556 | |
| 1557 | /** |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1558 | * Returns a set of the unique names of all query parameters. Iterating |
| 1559 | * over the set will return the names in order of their first occurrence. |
| 1560 | * |
| 1561 | * @throws UnsupportedOperationException if this isn't a hierarchical URI |
| 1562 | * |
| 1563 | * @return a set of decoded names |
| 1564 | */ |
| 1565 | public Set<String> getQueryParameterNames() { |
| 1566 | if (isOpaque()) { |
| 1567 | throw new UnsupportedOperationException(NOT_HIERARCHICAL); |
| 1568 | } |
| 1569 | |
| 1570 | String query = getEncodedQuery(); |
| 1571 | if (query == null) { |
| 1572 | return Collections.emptySet(); |
| 1573 | } |
| 1574 | |
| 1575 | Set<String> names = new LinkedHashSet<String>(); |
| 1576 | int start = 0; |
| 1577 | do { |
| 1578 | int next = query.indexOf('&', start); |
| 1579 | int end = (next == -1) ? query.length() : next; |
| 1580 | |
| 1581 | int separator = query.indexOf('=', start); |
| 1582 | if (separator > end || separator == -1) { |
| 1583 | separator = end; |
| 1584 | } |
| 1585 | |
| 1586 | String name = query.substring(start, separator); |
| 1587 | names.add(decode(name)); |
| 1588 | |
| 1589 | // Move start to end of name. |
| 1590 | start = end + 1; |
| 1591 | } while (start < query.length()); |
| 1592 | |
| 1593 | return Collections.unmodifiableSet(names); |
| 1594 | } |
| 1595 | |
| 1596 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1597 | * Searches the query string for parameter values with the given key. |
| 1598 | * |
| 1599 | * @param key which will be encoded |
| 1600 | * |
| 1601 | * @throws UnsupportedOperationException if this isn't a hierarchical URI |
| 1602 | * @throws NullPointerException if key is null |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1603 | * @return a list of decoded values |
| 1604 | */ |
| 1605 | public List<String> getQueryParameters(String key) { |
| 1606 | if (isOpaque()) { |
| 1607 | throw new UnsupportedOperationException(NOT_HIERARCHICAL); |
| 1608 | } |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1609 | if (key == null) { |
| 1610 | throw new NullPointerException("key"); |
| 1611 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1612 | |
Jean-Baptiste Queru | a8675f6 | 2009-07-29 14:25:07 -0700 | [diff] [blame] | 1613 | String query = getEncodedQuery(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1614 | if (query == null) { |
| 1615 | return Collections.emptyList(); |
| 1616 | } |
| 1617 | |
| 1618 | String encodedKey; |
| 1619 | try { |
| 1620 | encodedKey = URLEncoder.encode(key, DEFAULT_ENCODING); |
| 1621 | } catch (UnsupportedEncodingException e) { |
| 1622 | throw new AssertionError(e); |
| 1623 | } |
| 1624 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1625 | ArrayList<String> values = new ArrayList<String>(); |
| 1626 | |
| 1627 | int start = 0; |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1628 | do { |
| 1629 | int nextAmpersand = query.indexOf('&', start); |
| 1630 | int end = nextAmpersand != -1 ? nextAmpersand : query.length(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1631 | |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1632 | int separator = query.indexOf('=', start); |
| 1633 | if (separator > end || separator == -1) { |
| 1634 | separator = end; |
| 1635 | } |
| 1636 | |
| 1637 | if (separator - start == encodedKey.length() |
| 1638 | && query.regionMatches(start, encodedKey, 0, encodedKey.length())) { |
| 1639 | if (separator == end) { |
| 1640 | values.add(""); |
| 1641 | } else { |
| 1642 | values.add(decode(query.substring(separator + 1, end))); |
| 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | // Move start to end of name. |
| 1647 | if (nextAmpersand != -1) { |
| 1648 | start = nextAmpersand + 1; |
| 1649 | } else { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1650 | break; |
| 1651 | } |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1652 | } while (true); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1653 | |
| 1654 | return Collections.unmodifiableList(values); |
| 1655 | } |
| 1656 | |
| 1657 | /** |
| 1658 | * Searches the query string for the first value with the given key. |
| 1659 | * |
Narayan Kamath | 4356c95 | 2015-04-27 11:00:54 +0100 | [diff] [blame] | 1660 | * <p><strong>Warning:</strong> Prior to Jelly Bean, this decoded |
Jesse Wilson | 41e0839 | 2011-11-11 11:16:17 -0500 | [diff] [blame] | 1661 | * the '+' character as '+' rather than ' '. |
| 1662 | * |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1663 | * @param key which will be encoded |
| 1664 | * @throws UnsupportedOperationException if this isn't a hierarchical URI |
| 1665 | * @throws NullPointerException if key is null |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1666 | * @return the decoded value or null if no parameter is found |
| 1667 | */ |
| 1668 | public String getQueryParameter(String key) { |
| 1669 | if (isOpaque()) { |
| 1670 | throw new UnsupportedOperationException(NOT_HIERARCHICAL); |
| 1671 | } |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1672 | if (key == null) { |
Jeff Hamilton | f0cfe34 | 2010-08-09 16:54:05 -0500 | [diff] [blame] | 1673 | throw new NullPointerException("key"); |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1674 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1675 | |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1676 | final String query = getEncodedQuery(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1677 | if (query == null) { |
| 1678 | return null; |
| 1679 | } |
| 1680 | |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1681 | final String encodedKey = encode(key, null); |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1682 | final int length = query.length(); |
| 1683 | int start = 0; |
| 1684 | do { |
| 1685 | int nextAmpersand = query.indexOf('&', start); |
| 1686 | int end = nextAmpersand != -1 ? nextAmpersand : length; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1687 | |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1688 | int separator = query.indexOf('=', start); |
| 1689 | if (separator > end || separator == -1) { |
| 1690 | separator = end; |
| 1691 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1692 | |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1693 | if (separator - start == encodedKey.length() |
| 1694 | && query.regionMatches(start, encodedKey, 0, encodedKey.length())) { |
| 1695 | if (separator == end) { |
Jesse Wilson | 0f28af2 | 2011-10-28 18:27:44 -0400 | [diff] [blame] | 1696 | return ""; |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1697 | } else { |
Jesse Wilson | 0f28af2 | 2011-10-28 18:27:44 -0400 | [diff] [blame] | 1698 | String encodedValue = query.substring(separator + 1, end); |
Elliott Hughes | d396a44 | 2013-06-28 16:24:48 -0700 | [diff] [blame] | 1699 | return UriCodec.decode(encodedValue, true, StandardCharsets.UTF_8, false); |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1700 | } |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1701 | } |
Ben Dodson | 58a3459 | 2010-08-18 18:23:18 -0700 | [diff] [blame] | 1702 | |
| 1703 | // Move start to end of name. |
| 1704 | if (nextAmpersand != -1) { |
| 1705 | start = nextAmpersand + 1; |
| 1706 | } else { |
| 1707 | break; |
| 1708 | } |
| 1709 | } while (true); |
Brad Fitzpatrick | 70ece8d | 2009-10-26 14:03:54 -0700 | [diff] [blame] | 1710 | return null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1711 | } |
| 1712 | |
Jeff Hamilton | f0cfe34 | 2010-08-09 16:54:05 -0500 | [diff] [blame] | 1713 | /** |
| 1714 | * Searches the query string for the first value with the given key and interprets it |
| 1715 | * as a boolean value. "false" and "0" are interpreted as <code>false</code>, everything |
| 1716 | * else is interpreted as <code>true</code>. |
| 1717 | * |
| 1718 | * @param key which will be decoded |
| 1719 | * @param defaultValue the default value to return if there is no query parameter for key |
| 1720 | * @return the boolean interpretation of the query parameter key |
| 1721 | */ |
| 1722 | public boolean getBooleanQueryParameter(String key, boolean defaultValue) { |
| 1723 | String flag = getQueryParameter(key); |
| 1724 | if (flag == null) { |
| 1725 | return defaultValue; |
| 1726 | } |
Elliott Hughes | cb64d43 | 2013-08-02 10:00:44 -0700 | [diff] [blame] | 1727 | flag = flag.toLowerCase(Locale.ROOT); |
Jeff Hamilton | f0cfe34 | 2010-08-09 16:54:05 -0500 | [diff] [blame] | 1728 | return (!"false".equals(flag) && !"0".equals(flag)); |
| 1729 | } |
| 1730 | |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 1731 | /** |
Jesse Wilson | abc43dd | 2012-05-10 14:29:33 -0400 | [diff] [blame] | 1732 | * Return an equivalent URI with a lowercase scheme component. |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 1733 | * This aligns the Uri with Android best practices for |
| 1734 | * intent filtering. |
| 1735 | * |
| 1736 | * <p>For example, "HTTP://www.android.com" becomes |
| 1737 | * "http://www.android.com" |
| 1738 | * |
| 1739 | * <p>All URIs received from outside Android (such as user input, |
| 1740 | * or external sources like Bluetooth, NFC, or the Internet) should |
| 1741 | * be normalized before they are used to create an Intent. |
| 1742 | * |
| 1743 | * <p class="note">This method does <em>not</em> validate bad URI's, |
| 1744 | * or 'fix' poorly formatted URI's - so do not use it for input validation. |
| 1745 | * A Uri will always be returned, even if the Uri is badly formatted to |
| 1746 | * begin with and a scheme component cannot be found. |
| 1747 | * |
| 1748 | * @return normalized Uri (never null) |
| 1749 | * @see {@link android.content.Intent#setData} |
Craig Mautner | b2a958f | 2015-02-03 09:16:52 -0800 | [diff] [blame] | 1750 | * @see {@link android.content.Intent#setDataAndNormalize} |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 1751 | */ |
Jesse Wilson | abc43dd | 2012-05-10 14:29:33 -0400 | [diff] [blame] | 1752 | public Uri normalizeScheme() { |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 1753 | String scheme = getScheme(); |
| 1754 | if (scheme == null) return this; // give up |
Elliott Hughes | cb64d43 | 2013-08-02 10:00:44 -0700 | [diff] [blame] | 1755 | String lowerScheme = scheme.toLowerCase(Locale.ROOT); |
Nick Pelly | ccae412 | 2012-01-09 14:12:58 -0800 | [diff] [blame] | 1756 | if (scheme.equals(lowerScheme)) return this; // no change |
| 1757 | |
| 1758 | return buildUpon().scheme(lowerScheme).build(); |
| 1759 | } |
| 1760 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1761 | /** Identifies a null parcelled Uri. */ |
| 1762 | private static final int NULL_TYPE_ID = 0; |
| 1763 | |
| 1764 | /** |
| 1765 | * Reads Uris from Parcels. |
| 1766 | */ |
| 1767 | public static final Parcelable.Creator<Uri> CREATOR |
| 1768 | = new Parcelable.Creator<Uri>() { |
| 1769 | public Uri createFromParcel(Parcel in) { |
| 1770 | int type = in.readInt(); |
| 1771 | switch (type) { |
| 1772 | case NULL_TYPE_ID: return null; |
| 1773 | case StringUri.TYPE_ID: return StringUri.readFrom(in); |
| 1774 | case OpaqueUri.TYPE_ID: return OpaqueUri.readFrom(in); |
| 1775 | case HierarchicalUri.TYPE_ID: |
| 1776 | return HierarchicalUri.readFrom(in); |
| 1777 | } |
| 1778 | |
Dianne Hackborn | 8e8d65f | 2011-08-11 19:36:18 -0700 | [diff] [blame] | 1779 | throw new IllegalArgumentException("Unknown URI type: " + type); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1780 | } |
| 1781 | |
| 1782 | public Uri[] newArray(int size) { |
| 1783 | return new Uri[size]; |
| 1784 | } |
| 1785 | }; |
| 1786 | |
| 1787 | /** |
| 1788 | * Writes a Uri to a Parcel. |
| 1789 | * |
| 1790 | * @param out parcel to write to |
| 1791 | * @param uri to write, can be null |
| 1792 | */ |
| 1793 | public static void writeToParcel(Parcel out, Uri uri) { |
| 1794 | if (uri == null) { |
| 1795 | out.writeInt(NULL_TYPE_ID); |
| 1796 | } else { |
| 1797 | uri.writeToParcel(out, 0); |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | private static final char[] HEX_DIGITS = "0123456789ABCDEF".toCharArray(); |
| 1802 | |
| 1803 | /** |
| 1804 | * Encodes characters in the given string as '%'-escaped octets |
| 1805 | * using the UTF-8 scheme. Leaves letters ("A-Z", "a-z"), numbers |
| 1806 | * ("0-9"), and unreserved characters ("_-!.~'()*") intact. Encodes |
| 1807 | * all other characters. |
| 1808 | * |
| 1809 | * @param s string to encode |
| 1810 | * @return an encoded version of s suitable for use as a URI component, |
| 1811 | * or null if s is null |
| 1812 | */ |
| 1813 | public static String encode(String s) { |
| 1814 | return encode(s, null); |
| 1815 | } |
| 1816 | |
| 1817 | /** |
| 1818 | * Encodes characters in the given string as '%'-escaped octets |
| 1819 | * using the UTF-8 scheme. Leaves letters ("A-Z", "a-z"), numbers |
| 1820 | * ("0-9"), and unreserved characters ("_-!.~'()*") intact. Encodes |
| 1821 | * all other characters with the exception of those specified in the |
| 1822 | * allow argument. |
| 1823 | * |
| 1824 | * @param s string to encode |
| 1825 | * @param allow set of additional characters to allow in the encoded form, |
| 1826 | * null if no characters should be skipped |
| 1827 | * @return an encoded version of s suitable for use as a URI component, |
| 1828 | * or null if s is null |
| 1829 | */ |
| 1830 | public static String encode(String s, String allow) { |
| 1831 | if (s == null) { |
| 1832 | return null; |
| 1833 | } |
| 1834 | |
| 1835 | // Lazily-initialized buffers. |
| 1836 | StringBuilder encoded = null; |
| 1837 | |
| 1838 | int oldLength = s.length(); |
| 1839 | |
| 1840 | // This loop alternates between copying over allowed characters and |
| 1841 | // encoding in chunks. This results in fewer method calls and |
| 1842 | // allocations than encoding one character at a time. |
| 1843 | int current = 0; |
| 1844 | while (current < oldLength) { |
| 1845 | // Start in "copying" mode where we copy over allowed chars. |
| 1846 | |
| 1847 | // Find the next character which needs to be encoded. |
| 1848 | int nextToEncode = current; |
| 1849 | while (nextToEncode < oldLength |
| 1850 | && isAllowed(s.charAt(nextToEncode), allow)) { |
| 1851 | nextToEncode++; |
| 1852 | } |
| 1853 | |
| 1854 | // If there's nothing more to encode... |
| 1855 | if (nextToEncode == oldLength) { |
| 1856 | if (current == 0) { |
| 1857 | // We didn't need to encode anything! |
| 1858 | return s; |
| 1859 | } else { |
| 1860 | // Presumably, we've already done some encoding. |
| 1861 | encoded.append(s, current, oldLength); |
| 1862 | return encoded.toString(); |
| 1863 | } |
| 1864 | } |
| 1865 | |
| 1866 | if (encoded == null) { |
| 1867 | encoded = new StringBuilder(); |
| 1868 | } |
| 1869 | |
| 1870 | if (nextToEncode > current) { |
| 1871 | // Append allowed characters leading up to this point. |
| 1872 | encoded.append(s, current, nextToEncode); |
| 1873 | } else { |
| 1874 | // assert nextToEncode == current |
| 1875 | } |
| 1876 | |
| 1877 | // Switch to "encoding" mode. |
| 1878 | |
| 1879 | // Find the next allowed character. |
| 1880 | current = nextToEncode; |
| 1881 | int nextAllowed = current + 1; |
| 1882 | while (nextAllowed < oldLength |
| 1883 | && !isAllowed(s.charAt(nextAllowed), allow)) { |
| 1884 | nextAllowed++; |
| 1885 | } |
| 1886 | |
| 1887 | // Convert the substring to bytes and encode the bytes as |
| 1888 | // '%'-escaped octets. |
| 1889 | String toEncode = s.substring(current, nextAllowed); |
| 1890 | try { |
| 1891 | byte[] bytes = toEncode.getBytes(DEFAULT_ENCODING); |
| 1892 | int bytesLength = bytes.length; |
| 1893 | for (int i = 0; i < bytesLength; i++) { |
| 1894 | encoded.append('%'); |
| 1895 | encoded.append(HEX_DIGITS[(bytes[i] & 0xf0) >> 4]); |
| 1896 | encoded.append(HEX_DIGITS[bytes[i] & 0xf]); |
| 1897 | } |
| 1898 | } catch (UnsupportedEncodingException e) { |
| 1899 | throw new AssertionError(e); |
| 1900 | } |
| 1901 | |
| 1902 | current = nextAllowed; |
| 1903 | } |
| 1904 | |
| 1905 | // Encoded could still be null at this point if s is empty. |
| 1906 | return encoded == null ? s : encoded.toString(); |
| 1907 | } |
| 1908 | |
| 1909 | /** |
| 1910 | * Returns true if the given character is allowed. |
| 1911 | * |
| 1912 | * @param c character to check |
| 1913 | * @param allow characters to allow |
| 1914 | * @return true if the character is allowed or false if it should be |
| 1915 | * encoded |
| 1916 | */ |
| 1917 | private static boolean isAllowed(char c, String allow) { |
| 1918 | return (c >= 'A' && c <= 'Z') |
| 1919 | || (c >= 'a' && c <= 'z') |
| 1920 | || (c >= '0' && c <= '9') |
| 1921 | || "_-!.~'()*".indexOf(c) != NOT_FOUND |
| 1922 | || (allow != null && allow.indexOf(c) != NOT_FOUND); |
| 1923 | } |
| 1924 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1925 | /** |
| 1926 | * Decodes '%'-escaped octets in the given string using the UTF-8 scheme. |
| 1927 | * Replaces invalid octets with the unicode replacement character |
| 1928 | * ("\\uFFFD"). |
| 1929 | * |
| 1930 | * @param s encoded string to decode |
| 1931 | * @return the given string with escaped octets decoded, or null if |
| 1932 | * s is null |
| 1933 | */ |
| 1934 | public static String decode(String s) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1935 | if (s == null) { |
| 1936 | return null; |
| 1937 | } |
Elliott Hughes | d396a44 | 2013-06-28 16:24:48 -0700 | [diff] [blame] | 1938 | return UriCodec.decode(s, false, StandardCharsets.UTF_8, false); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1939 | } |
| 1940 | |
| 1941 | /** |
| 1942 | * Support for part implementations. |
| 1943 | */ |
| 1944 | static abstract class AbstractPart { |
| 1945 | |
| 1946 | /** |
| 1947 | * Enum which indicates which representation of a given part we have. |
| 1948 | */ |
| 1949 | static class Representation { |
| 1950 | static final int BOTH = 0; |
| 1951 | static final int ENCODED = 1; |
| 1952 | static final int DECODED = 2; |
| 1953 | } |
| 1954 | |
| 1955 | volatile String encoded; |
| 1956 | volatile String decoded; |
| 1957 | |
| 1958 | AbstractPart(String encoded, String decoded) { |
| 1959 | this.encoded = encoded; |
| 1960 | this.decoded = decoded; |
| 1961 | } |
| 1962 | |
| 1963 | abstract String getEncoded(); |
| 1964 | |
| 1965 | final String getDecoded() { |
| 1966 | @SuppressWarnings("StringEquality") |
| 1967 | boolean hasDecoded = decoded != NOT_CACHED; |
| 1968 | return hasDecoded ? decoded : (decoded = decode(encoded)); |
| 1969 | } |
| 1970 | |
| 1971 | final void writeTo(Parcel parcel) { |
| 1972 | @SuppressWarnings("StringEquality") |
| 1973 | boolean hasEncoded = encoded != NOT_CACHED; |
| 1974 | |
| 1975 | @SuppressWarnings("StringEquality") |
| 1976 | boolean hasDecoded = decoded != NOT_CACHED; |
| 1977 | |
| 1978 | if (hasEncoded && hasDecoded) { |
| 1979 | parcel.writeInt(Representation.BOTH); |
| 1980 | parcel.writeString(encoded); |
| 1981 | parcel.writeString(decoded); |
| 1982 | } else if (hasEncoded) { |
| 1983 | parcel.writeInt(Representation.ENCODED); |
| 1984 | parcel.writeString(encoded); |
| 1985 | } else if (hasDecoded) { |
| 1986 | parcel.writeInt(Representation.DECODED); |
| 1987 | parcel.writeString(decoded); |
| 1988 | } else { |
Dianne Hackborn | 8e8d65f | 2011-08-11 19:36:18 -0700 | [diff] [blame] | 1989 | throw new IllegalArgumentException("Neither encoded nor decoded"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1990 | } |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | /** |
| 1995 | * Immutable wrapper of encoded and decoded versions of a URI part. Lazily |
| 1996 | * creates the encoded or decoded version from the other. |
| 1997 | */ |
| 1998 | static class Part extends AbstractPart { |
| 1999 | |
| 2000 | /** A part with null values. */ |
| 2001 | static final Part NULL = new EmptyPart(null); |
| 2002 | |
| 2003 | /** A part with empty strings for values. */ |
| 2004 | static final Part EMPTY = new EmptyPart(""); |
| 2005 | |
| 2006 | private Part(String encoded, String decoded) { |
| 2007 | super(encoded, decoded); |
| 2008 | } |
| 2009 | |
| 2010 | boolean isEmpty() { |
| 2011 | return false; |
| 2012 | } |
| 2013 | |
| 2014 | String getEncoded() { |
| 2015 | @SuppressWarnings("StringEquality") |
| 2016 | boolean hasEncoded = encoded != NOT_CACHED; |
| 2017 | return hasEncoded ? encoded : (encoded = encode(decoded)); |
| 2018 | } |
| 2019 | |
| 2020 | static Part readFrom(Parcel parcel) { |
| 2021 | int representation = parcel.readInt(); |
| 2022 | switch (representation) { |
| 2023 | case Representation.BOTH: |
| 2024 | return from(parcel.readString(), parcel.readString()); |
| 2025 | case Representation.ENCODED: |
| 2026 | return fromEncoded(parcel.readString()); |
| 2027 | case Representation.DECODED: |
| 2028 | return fromDecoded(parcel.readString()); |
| 2029 | default: |
Dianne Hackborn | 8e8d65f | 2011-08-11 19:36:18 -0700 | [diff] [blame] | 2030 | throw new IllegalArgumentException("Unknown representation: " |
| 2031 | + representation); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2032 | } |
| 2033 | } |
| 2034 | |
| 2035 | /** |
| 2036 | * Returns given part or {@link #NULL} if the given part is null. |
| 2037 | */ |
| 2038 | static Part nonNull(Part part) { |
| 2039 | return part == null ? NULL : part; |
| 2040 | } |
| 2041 | |
| 2042 | /** |
| 2043 | * Creates a part from the encoded string. |
| 2044 | * |
| 2045 | * @param encoded part string |
| 2046 | */ |
| 2047 | static Part fromEncoded(String encoded) { |
| 2048 | return from(encoded, NOT_CACHED); |
| 2049 | } |
| 2050 | |
| 2051 | /** |
| 2052 | * Creates a part from the decoded string. |
| 2053 | * |
| 2054 | * @param decoded part string |
| 2055 | */ |
| 2056 | static Part fromDecoded(String decoded) { |
| 2057 | return from(NOT_CACHED, decoded); |
| 2058 | } |
| 2059 | |
| 2060 | /** |
| 2061 | * Creates a part from the encoded and decoded strings. |
| 2062 | * |
| 2063 | * @param encoded part string |
| 2064 | * @param decoded part string |
| 2065 | */ |
| 2066 | static Part from(String encoded, String decoded) { |
| 2067 | // We have to check both encoded and decoded in case one is |
| 2068 | // NOT_CACHED. |
| 2069 | |
| 2070 | if (encoded == null) { |
| 2071 | return NULL; |
| 2072 | } |
| 2073 | if (encoded.length() == 0) { |
| 2074 | return EMPTY; |
| 2075 | } |
| 2076 | |
| 2077 | if (decoded == null) { |
| 2078 | return NULL; |
| 2079 | } |
| 2080 | if (decoded .length() == 0) { |
| 2081 | return EMPTY; |
| 2082 | } |
| 2083 | |
| 2084 | return new Part(encoded, decoded); |
| 2085 | } |
| 2086 | |
| 2087 | private static class EmptyPart extends Part { |
| 2088 | public EmptyPart(String value) { |
| 2089 | super(value, value); |
| 2090 | } |
| 2091 | |
| 2092 | @Override |
| 2093 | boolean isEmpty() { |
| 2094 | return true; |
| 2095 | } |
| 2096 | } |
| 2097 | } |
| 2098 | |
| 2099 | /** |
| 2100 | * Immutable wrapper of encoded and decoded versions of a path part. Lazily |
| 2101 | * creates the encoded or decoded version from the other. |
| 2102 | */ |
| 2103 | static class PathPart extends AbstractPart { |
| 2104 | |
| 2105 | /** A part with null values. */ |
| 2106 | static final PathPart NULL = new PathPart(null, null); |
| 2107 | |
| 2108 | /** A part with empty strings for values. */ |
| 2109 | static final PathPart EMPTY = new PathPart("", ""); |
| 2110 | |
| 2111 | private PathPart(String encoded, String decoded) { |
| 2112 | super(encoded, decoded); |
| 2113 | } |
| 2114 | |
| 2115 | String getEncoded() { |
| 2116 | @SuppressWarnings("StringEquality") |
| 2117 | boolean hasEncoded = encoded != NOT_CACHED; |
| 2118 | |
| 2119 | // Don't encode '/'. |
| 2120 | return hasEncoded ? encoded : (encoded = encode(decoded, "/")); |
| 2121 | } |
| 2122 | |
| 2123 | /** |
| 2124 | * Cached path segments. This doesn't need to be volatile--we don't |
| 2125 | * care if other threads see the result. |
| 2126 | */ |
| 2127 | private PathSegments pathSegments; |
| 2128 | |
| 2129 | /** |
| 2130 | * Gets the individual path segments. Parses them if necessary. |
| 2131 | * |
| 2132 | * @return parsed path segments or null if this isn't a hierarchical |
| 2133 | * URI |
| 2134 | */ |
| 2135 | PathSegments getPathSegments() { |
| 2136 | if (pathSegments != null) { |
| 2137 | return pathSegments; |
| 2138 | } |
| 2139 | |
| 2140 | String path = getEncoded(); |
| 2141 | if (path == null) { |
| 2142 | return pathSegments = PathSegments.EMPTY; |
| 2143 | } |
| 2144 | |
| 2145 | PathSegmentsBuilder segmentBuilder = new PathSegmentsBuilder(); |
| 2146 | |
| 2147 | int previous = 0; |
| 2148 | int current; |
| 2149 | while ((current = path.indexOf('/', previous)) > -1) { |
| 2150 | // This check keeps us from adding a segment if the path starts |
| 2151 | // '/' and an empty segment for "//". |
| 2152 | if (previous < current) { |
| 2153 | String decodedSegment |
| 2154 | = decode(path.substring(previous, current)); |
| 2155 | segmentBuilder.add(decodedSegment); |
| 2156 | } |
| 2157 | previous = current + 1; |
| 2158 | } |
| 2159 | |
| 2160 | // Add in the final path segment. |
| 2161 | if (previous < path.length()) { |
| 2162 | segmentBuilder.add(decode(path.substring(previous))); |
| 2163 | } |
| 2164 | |
| 2165 | return pathSegments = segmentBuilder.build(); |
| 2166 | } |
| 2167 | |
| 2168 | static PathPart appendEncodedSegment(PathPart oldPart, |
| 2169 | String newSegment) { |
| 2170 | // If there is no old path, should we make the new path relative |
| 2171 | // or absolute? I pick absolute. |
| 2172 | |
| 2173 | if (oldPart == null) { |
| 2174 | // No old path. |
| 2175 | return fromEncoded("/" + newSegment); |
| 2176 | } |
| 2177 | |
| 2178 | String oldPath = oldPart.getEncoded(); |
| 2179 | |
| 2180 | if (oldPath == null) { |
| 2181 | oldPath = ""; |
| 2182 | } |
| 2183 | |
| 2184 | int oldPathLength = oldPath.length(); |
| 2185 | String newPath; |
| 2186 | if (oldPathLength == 0) { |
| 2187 | // No old path. |
| 2188 | newPath = "/" + newSegment; |
| 2189 | } else if (oldPath.charAt(oldPathLength - 1) == '/') { |
| 2190 | newPath = oldPath + newSegment; |
| 2191 | } else { |
| 2192 | newPath = oldPath + "/" + newSegment; |
| 2193 | } |
| 2194 | |
| 2195 | return fromEncoded(newPath); |
| 2196 | } |
| 2197 | |
| 2198 | static PathPart appendDecodedSegment(PathPart oldPart, String decoded) { |
| 2199 | String encoded = encode(decoded); |
| 2200 | |
| 2201 | // TODO: Should we reuse old PathSegments? Probably not. |
| 2202 | return appendEncodedSegment(oldPart, encoded); |
| 2203 | } |
| 2204 | |
| 2205 | static PathPart readFrom(Parcel parcel) { |
| 2206 | int representation = parcel.readInt(); |
| 2207 | switch (representation) { |
| 2208 | case Representation.BOTH: |
| 2209 | return from(parcel.readString(), parcel.readString()); |
| 2210 | case Representation.ENCODED: |
| 2211 | return fromEncoded(parcel.readString()); |
| 2212 | case Representation.DECODED: |
| 2213 | return fromDecoded(parcel.readString()); |
| 2214 | default: |
Dianne Hackborn | 8e8d65f | 2011-08-11 19:36:18 -0700 | [diff] [blame] | 2215 | throw new IllegalArgumentException("Bad representation: " + representation); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2216 | } |
| 2217 | } |
| 2218 | |
| 2219 | /** |
| 2220 | * Creates a path from the encoded string. |
| 2221 | * |
| 2222 | * @param encoded part string |
| 2223 | */ |
| 2224 | static PathPart fromEncoded(String encoded) { |
| 2225 | return from(encoded, NOT_CACHED); |
| 2226 | } |
| 2227 | |
| 2228 | /** |
| 2229 | * Creates a path from the decoded string. |
| 2230 | * |
| 2231 | * @param decoded part string |
| 2232 | */ |
| 2233 | static PathPart fromDecoded(String decoded) { |
| 2234 | return from(NOT_CACHED, decoded); |
| 2235 | } |
| 2236 | |
| 2237 | /** |
| 2238 | * Creates a path from the encoded and decoded strings. |
| 2239 | * |
| 2240 | * @param encoded part string |
| 2241 | * @param decoded part string |
| 2242 | */ |
| 2243 | static PathPart from(String encoded, String decoded) { |
| 2244 | if (encoded == null) { |
| 2245 | return NULL; |
| 2246 | } |
| 2247 | |
| 2248 | if (encoded.length() == 0) { |
| 2249 | return EMPTY; |
| 2250 | } |
| 2251 | |
| 2252 | return new PathPart(encoded, decoded); |
| 2253 | } |
| 2254 | |
| 2255 | /** |
| 2256 | * Prepends path values with "/" if they're present, not empty, and |
| 2257 | * they don't already start with "/". |
| 2258 | */ |
| 2259 | static PathPart makeAbsolute(PathPart oldPart) { |
| 2260 | @SuppressWarnings("StringEquality") |
| 2261 | boolean encodedCached = oldPart.encoded != NOT_CACHED; |
| 2262 | |
| 2263 | // We don't care which version we use, and we don't want to force |
| 2264 | // unneccessary encoding/decoding. |
| 2265 | String oldPath = encodedCached ? oldPart.encoded : oldPart.decoded; |
| 2266 | |
| 2267 | if (oldPath == null || oldPath.length() == 0 |
| 2268 | || oldPath.startsWith("/")) { |
| 2269 | return oldPart; |
| 2270 | } |
| 2271 | |
| 2272 | // Prepend encoded string if present. |
| 2273 | String newEncoded = encodedCached |
| 2274 | ? "/" + oldPart.encoded : NOT_CACHED; |
| 2275 | |
| 2276 | // Prepend decoded string if present. |
| 2277 | @SuppressWarnings("StringEquality") |
| 2278 | boolean decodedCached = oldPart.decoded != NOT_CACHED; |
| 2279 | String newDecoded = decodedCached |
| 2280 | ? "/" + oldPart.decoded |
| 2281 | : NOT_CACHED; |
| 2282 | |
| 2283 | return new PathPart(newEncoded, newDecoded); |
| 2284 | } |
| 2285 | } |
| 2286 | |
| 2287 | /** |
| 2288 | * Creates a new Uri by appending an already-encoded path segment to a |
| 2289 | * base Uri. |
| 2290 | * |
| 2291 | * @param baseUri Uri to append path segment to |
| 2292 | * @param pathSegment encoded path segment to append |
Jesse Wilson | 0f28af2 | 2011-10-28 18:27:44 -0400 | [diff] [blame] | 2293 | * @return a new Uri based on baseUri with the given segment appended to |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2294 | * the path |
| 2295 | * @throws NullPointerException if baseUri is null |
| 2296 | */ |
| 2297 | public static Uri withAppendedPath(Uri baseUri, String pathSegment) { |
| 2298 | Builder builder = baseUri.buildUpon(); |
| 2299 | builder = builder.appendEncodedPath(pathSegment); |
| 2300 | return builder.build(); |
| 2301 | } |
Jeff Sharkey | 65c4a2b | 2012-09-25 17:22:27 -0700 | [diff] [blame] | 2302 | |
| 2303 | /** |
| 2304 | * If this {@link Uri} is {@code file://}, then resolve and return its |
| 2305 | * canonical path. Also fixes legacy emulated storage paths so they are |
| 2306 | * usable across user boundaries. Should always be called from the app |
| 2307 | * process before sending elsewhere. |
| 2308 | * |
| 2309 | * @hide |
| 2310 | */ |
| 2311 | public Uri getCanonicalUri() { |
| 2312 | if ("file".equals(getScheme())) { |
| 2313 | final String canonicalPath; |
| 2314 | try { |
| 2315 | canonicalPath = new File(getPath()).getCanonicalPath(); |
| 2316 | } catch (IOException e) { |
| 2317 | return this; |
| 2318 | } |
| 2319 | |
| 2320 | if (Environment.isExternalStorageEmulated()) { |
| 2321 | final String legacyPath = Environment.getLegacyExternalStorageDirectory() |
| 2322 | .toString(); |
| 2323 | |
| 2324 | // Splice in user-specific path when legacy path is found |
| 2325 | if (canonicalPath.startsWith(legacyPath)) { |
| 2326 | return Uri.fromFile(new File( |
| 2327 | Environment.getExternalStorageDirectory().toString(), |
| 2328 | canonicalPath.substring(legacyPath.length() + 1))); |
| 2329 | } |
| 2330 | } |
| 2331 | |
| 2332 | return Uri.fromFile(new File(canonicalPath)); |
| 2333 | } else { |
| 2334 | return this; |
| 2335 | } |
| 2336 | } |
Jeff Sharkey | a14acd2 | 2013-04-02 18:27:45 -0700 | [diff] [blame] | 2337 | |
| 2338 | /** |
| 2339 | * If this is a {@code file://} Uri, it will be reported to |
| 2340 | * {@link StrictMode}. |
| 2341 | * |
| 2342 | * @hide |
| 2343 | */ |
| 2344 | public void checkFileUriExposed(String location) { |
Jeff Sharkey | ac3be9a | 2016-02-01 10:39:30 -0700 | [diff] [blame] | 2345 | if ("file".equals(getScheme()) && !getPath().startsWith("/system/")) { |
Jeff Sharkey | 344744b | 2016-01-28 19:03:30 -0700 | [diff] [blame] | 2346 | StrictMode.onFileUriExposed(this, location); |
Jeff Sharkey | a14acd2 | 2013-04-02 18:27:45 -0700 | [diff] [blame] | 2347 | } |
| 2348 | } |
Jeff Sharkey | 846318a | 2014-04-04 12:12:41 -0700 | [diff] [blame] | 2349 | |
| 2350 | /** |
| 2351 | * Test if this is a path prefix match against the given Uri. Verifies that |
| 2352 | * scheme, authority, and atomic path segments match. |
| 2353 | * |
| 2354 | * @hide |
| 2355 | */ |
| 2356 | public boolean isPathPrefixMatch(Uri prefix) { |
| 2357 | if (!Objects.equals(getScheme(), prefix.getScheme())) return false; |
| 2358 | if (!Objects.equals(getAuthority(), prefix.getAuthority())) return false; |
| 2359 | |
| 2360 | List<String> seg = getPathSegments(); |
| 2361 | List<String> prefixSeg = prefix.getPathSegments(); |
| 2362 | |
| 2363 | final int prefixSize = prefixSeg.size(); |
| 2364 | if (seg.size() < prefixSize) return false; |
| 2365 | |
| 2366 | for (int i = 0; i < prefixSize; i++) { |
| 2367 | if (!Objects.equals(seg.get(i), prefixSeg.get(i))) { |
| 2368 | return false; |
| 2369 | } |
| 2370 | } |
| 2371 | |
| 2372 | return true; |
| 2373 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2374 | } |