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Diffstat (limited to 'v1/src/main/java/android/net/Uri__FromAndroid.java')
| -rw-r--r-- | v1/src/main/java/android/net/Uri__FromAndroid.java | 2250 |
1 files changed, 0 insertions, 2250 deletions
diff --git a/v1/src/main/java/android/net/Uri__FromAndroid.java b/v1/src/main/java/android/net/Uri__FromAndroid.java deleted file mode 100644 index 2c77864a4..000000000 --- a/v1/src/main/java/android/net/Uri__FromAndroid.java +++ /dev/null @@ -1,2250 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package android.net; - -import android.os.Parcel; -import android.os.Parcelable; -import android.util.Log; - -import java.io.ByteArrayOutputStream; -import java.io.File; -import java.io.IOException; -import java.io.UnsupportedEncodingException; -import java.net.URLEncoder; -import java.util.*; - -/** - * Immutable URI reference. A URI reference includes a URI and a fragment, the - * component of the URI following a '#'. Builds and parses URI references - * which conform to - * <a href="http://www.faqs.org/rfcs/rfc2396.html">RFC 2396</a>. - * - * <p>In the interest of performance, this class performs little to no - * validation. Behavior is undefined for invalid input. This class is very - * forgiving--in the face of invalid input, it will return garbage - * rather than throw an exception unless otherwise specified. - */ -public abstract class Uri__FromAndroid implements Parcelable, Comparable<Uri__FromAndroid> { - - /* - - This class aims to do as little up front work as possible. To accomplish - that, we vary the implementation dependending on what the user passes in. - For example, we have one implementation if the user passes in a - URI string (StringUri) and another if the user passes in the - individual components (OpaqueUri). - - *Concurrency notes*: Like any truly immutable object, this class is safe - for concurrent use. This class uses a caching pattern in some places where - it doesn't use volatile or synchronized. This is safe to do with ints - because getting or setting an int is atomic. It's safe to do with a String - because the internal fields are final and the memory model guarantees other - threads won't see a partially initialized instance. We are not guaranteed - that some threads will immediately see changes from other threads on - certain platforms, but we don't mind if those threads reconstruct the - cached result. As a result, we get thread safe caching with no concurrency - overhead, which means the most common case, access from a single thread, - is as fast as possible. - - From the Java Language spec.: - - "17.5 Final Field Semantics - - ... when the object is seen by another thread, that thread will always - see the correctly constructed version of that object's final fields. - It will also see versions of any object or array referenced by - those final fields that are at least as up-to-date as the final fields - are." - - In that same vein, all non-transient fields within Uri - implementations should be final and immutable so as to ensure true - immutability for clients even when they don't use proper concurrency - control. - - For reference, from RFC 2396: - - "4.3. Parsing a URI Reference - - A URI reference is typically parsed according to the four main - components and fragment identifier in order to determine what - components are present and whether the reference is relative or - absolute. The individual components are then parsed for their - subparts and, if not opaque, to verify their validity. - - Although the BNF defines what is allowed in each component, it is - ambiguous in terms of differentiating between an authority component - and a path component that begins with two slash characters. The - greedy algorithm is used for disambiguation: the left-most matching - rule soaks up as much of the URI reference string as it is capable of - matching. In other words, the authority component wins." - - The "four main components" of a hierarchical URI consist of - <scheme>://<authority><path>?<query> - - */ - - /** Log tag. */ - private static final String LOG = Uri__FromAndroid.class.getSimpleName(); - - /** - * NOTE: EMPTY accesses this field during its own initialization, so this - * field *must* be initialized first, or else EMPTY will see a null value! - * - * Placeholder for strings which haven't been cached. This enables us - * to cache null. We intentionally create a new String instance so we can - * compare its identity and there is no chance we will confuse it with - * user data. - */ - @SuppressWarnings("RedundantStringConstructorCall") - private static final String NOT_CACHED = new String("NOT CACHED"); - - /** - * The empty URI, equivalent to "". - */ - public static final Uri__FromAndroid EMPTY = new HierarchicalUri(null, Part.NULL, - PathPart.EMPTY, Part.NULL, Part.NULL); - - /** - * Prevents external subclassing. - */ - private Uri__FromAndroid() {} - - /** - * Returns true if this URI is hierarchical like "http://google.com". - * Absolute URIs are hierarchical if the scheme-specific part starts with - * a '/'. Relative URIs are always hierarchical. - */ - public abstract boolean isHierarchical(); - - /** - * Returns true if this URI is opaque like "mailto:nobody@google.com". The - * scheme-specific part of an opaque URI cannot start with a '/'. - */ - public boolean isOpaque() { - return !isHierarchical(); - } - - /** - * Returns true if this URI is relative, i.e. if it doesn't contain an - * explicit scheme. - * - * @return true if this URI is relative, false if it's absolute - */ - public abstract boolean isRelative(); - - /** - * Returns true if this URI is absolute, i.e. if it contains an - * explicit scheme. - * - * @return true if this URI is absolute, false if it's relative - */ - public boolean isAbsolute() { - return !isRelative(); - } - - /** - * Gets the scheme of this URI. Example: "http" - * - * @return the scheme or null if this is a relative URI - */ - public abstract String getScheme(); - - /** - * Gets the scheme-specific part of this URI, i.e. everything between the - * scheme separator ':' and the fragment separator '#'. If this is a - * relative URI, this method returns the entire URI. Decodes escaped octets. - * - * <p>Example: "//www.google.com/search?q=android" - * - * @return the decoded scheme-specific-part - */ - public abstract String getSchemeSpecificPart(); - - /** - * Gets the scheme-specific part of this URI, i.e. everything between the - * scheme separator ':' and the fragment separator '#'. If this is a - * relative URI, this method returns the entire URI. Leaves escaped octets - * intact. - * - * <p>Example: "//www.google.com/search?q=android" - * - * @return the decoded scheme-specific-part - */ - public abstract String getEncodedSchemeSpecificPart(); - - /** - * Gets the decoded authority part of this URI. For - * server addresses, the authority is structured as follows: - * {@code [ userinfo '@' ] host [ ':' port ]} - * - * <p>Examples: "google.com", "bob@google.com:80" - * - * @return the authority for this URI or null if not present - */ - public abstract String getAuthority(); - - /** - * Gets the encoded authority part of this URI. For - * server addresses, the authority is structured as follows: - * {@code [ userinfo '@' ] host [ ':' port ]} - * - * <p>Examples: "google.com", "bob@google.com:80" - * - * @return the authority for this URI or null if not present - */ - public abstract String getEncodedAuthority(); - - /** - * Gets the decoded user information from the authority. - * For example, if the authority is "nobody@google.com", this method will - * return "nobody". - * - * @return the user info for this URI or null if not present - */ - public abstract String getUserInfo(); - - /** - * Gets the encoded user information from the authority. - * For example, if the authority is "nobody@google.com", this method will - * return "nobody". - * - * @return the user info for this URI or null if not present - */ - public abstract String getEncodedUserInfo(); - - /** - * Gets the encoded host from the authority for this URI. For example, - * if the authority is "bob@google.com", this method will return - * "google.com". - * - * @return the host for this URI or null if not present - */ - public abstract String getHost(); - - /** - * Gets the port from the authority for this URI. For example, - * if the authority is "google.com:80", this method will return 80. - * - * @return the port for this URI or -1 if invalid or not present - */ - public abstract int getPort(); - - /** - * Gets the decoded path. - * - * @return the decoded path, or null if this is not a hierarchical URI - * (like "mailto:nobody@google.com") or the URI is invalid - */ - public abstract String getPath(); - - /** - * Gets the encoded path. - * - * @return the encoded path, or null if this is not a hierarchical URI - * (like "mailto:nobody@google.com") or the URI is invalid - */ - public abstract String getEncodedPath(); - - /** - * Gets the decoded query component from this URI. The query comes after - * the query separator ('?') and before the fragment separator ('#'). This - * method would return "q=android" for - * "http://www.google.com/search?q=android". - * - * @return the decoded query or null if there isn't one - */ - public abstract String getQuery(); - - /** - * Gets the encoded query component from this URI. The query comes after - * the query separator ('?') and before the fragment separator ('#'). This - * method would return "q=android" for - * "http://www.google.com/search?q=android". - * - * @return the encoded query or null if there isn't one - */ - public abstract String getEncodedQuery(); - - /** - * Gets the decoded fragment part of this URI, everything after the '#'. - * - * @return the decoded fragment or null if there isn't one - */ - public abstract String getFragment(); - - /** - * Gets the encoded fragment part of this URI, everything after the '#'. - * - * @return the encoded fragment or null if there isn't one - */ - public abstract String getEncodedFragment(); - - /** - * Gets the decoded path segments. - * - * @return decoded path segments, each without a leading or trailing '/' - */ - public abstract List<String> getPathSegments(); - - /** - * Gets the decoded last segment in the path. - * - * @return the decoded last segment or null if the path is empty - */ - public abstract String getLastPathSegment(); - - /** - * Compares this Uri to another object for equality. Returns true if the - * encoded string representations of this Uri and the given Uri are - * equal. Case counts. Paths are not normalized. If one Uri specifies a - * default port explicitly and the other leaves it implicit, they will not - * be considered equal. - */ - public boolean equals(Object o) { - if (!(o instanceof Uri__FromAndroid)) { - return false; - } - - Uri__FromAndroid other = (Uri__FromAndroid) o; - - return toString().equals(other.toString()); - } - - /** - * Hashes the encoded string represention of this Uri consistently with - * {@link #equals(Object)}. - */ - public int hashCode() { - return toString().hashCode(); - } - - /** - * Compares the string representation of this Uri with that of - * another. - */ - public int compareTo(Uri__FromAndroid other) { - return toString().compareTo(other.toString()); - } - - /** - * Returns the encoded string representation of this URI. - * Example: "http://google.com/" - */ - public abstract String toString(); - - /** - * Constructs a new builder, copying the attributes from this Uri. - */ - public abstract Builder buildUpon(); - - /** Index of a component which was not found. */ - private final static int NOT_FOUND = -1; - - /** Placeholder value for an index which hasn't been calculated yet. */ - private final static int NOT_CALCULATED = -2; - - /** - * Error message presented when a user tries to treat an opaque URI as - * hierarchical. - */ - private static final String NOT_HIERARCHICAL - = "This isn't a hierarchical URI."; - - /** Default encoding. */ - private static final String DEFAULT_ENCODING = "UTF-8"; - - /** - * Creates a Uri which parses the given encoded URI string. - * - * @param uriString an RFC 2396-compliant, encoded URI - * @throws NullPointerException if uriString is null - * @return Uri for this given uri string - */ - public static Uri__FromAndroid parse(String uriString) { - return new StringUri(uriString); - } - - /** - * Creates a Uri from a file. The URI has the form - * "file://<absolute path>". Encodes path characters with the exception of - * '/'. - * - * <p>Example: "file:///tmp/android.txt" - * - * @throws NullPointerException if file is null - * @return a Uri for the given file - */ - public static Uri__FromAndroid fromFile(File file) { - if (file == null) { - throw new NullPointerException("file"); - } - - PathPart path = PathPart.fromDecoded(file.getAbsolutePath()); - return new HierarchicalUri( - "file", Part.EMPTY, path, Part.NULL, Part.NULL); - } - - /** - * An implementation which wraps a String URI. This URI can be opaque or - * hierarchical, but we extend AbstractHierarchicalUri in case we need - * the hierarchical functionality. - */ - private static class StringUri extends AbstractHierarchicalUri { - - /** Used in parcelling. */ - static final int TYPE_ID = 1; - - /** URI string representation. */ - private final String uriString; - - private StringUri(String uriString) { - if (uriString == null) { - throw new NullPointerException("uriString"); - } - - this.uriString = uriString; - } - - static Uri__FromAndroid readFrom(Parcel parcel) { - return new StringUri(parcel.readString()); - } - - public int describeContents() { - return 0; - } - - public void writeToParcel(Parcel parcel, int flags) { - parcel.writeInt(TYPE_ID); - parcel.writeString(uriString); - } - - /** Cached scheme separator index. */ - private volatile int cachedSsi = NOT_CALCULATED; - - /** Finds the first ':'. Returns -1 if none found. */ - private int findSchemeSeparator() { - return cachedSsi == NOT_CALCULATED - ? cachedSsi = uriString.indexOf(':') - : cachedSsi; - } - - /** Cached fragment separator index. */ - private volatile int cachedFsi = NOT_CALCULATED; - - /** Finds the first '#'. Returns -1 if none found. */ - private int findFragmentSeparator() { - return cachedFsi == NOT_CALCULATED - ? cachedFsi = uriString.indexOf('#', findSchemeSeparator()) - : cachedFsi; - } - - public boolean isHierarchical() { - int ssi = findSchemeSeparator(); - - if (ssi == NOT_FOUND) { - // All relative URIs are hierarchical. - return true; - } - - if (uriString.length() == ssi + 1) { - // No ssp. - return false; - } - - // If the ssp starts with a '/', this is hierarchical. - return uriString.charAt(ssi + 1) == '/'; - } - - public boolean isRelative() { - // Note: We return true if the index is 0 - return findSchemeSeparator() == NOT_FOUND; - } - - private volatile String scheme = NOT_CACHED; - - public String getScheme() { - @SuppressWarnings("StringEquality") - boolean cached = (scheme != NOT_CACHED); - return cached ? scheme : (scheme = parseScheme()); - } - - private String parseScheme() { - int ssi = findSchemeSeparator(); - return ssi == NOT_FOUND ? null : uriString.substring(0, ssi); - } - - private Part ssp; - - private Part getSsp() { - return ssp == null ? ssp = Part.fromEncoded(parseSsp()) : ssp; - } - - public String getEncodedSchemeSpecificPart() { - return getSsp().getEncoded(); - } - - public String getSchemeSpecificPart() { - return getSsp().getDecoded(); - } - - private String parseSsp() { - int ssi = findSchemeSeparator(); - int fsi = findFragmentSeparator(); - - // Return everything between ssi and fsi. - return fsi == NOT_FOUND - ? uriString.substring(ssi + 1) - : uriString.substring(ssi + 1, fsi); - } - - private Part authority; - - private Part getAuthorityPart() { - if (authority == null) { - String encodedAuthority - = parseAuthority(this.uriString, findSchemeSeparator()); - return authority = Part.fromEncoded(encodedAuthority); - } - - return authority; - } - - public String getEncodedAuthority() { - return getAuthorityPart().getEncoded(); - } - - public String getAuthority() { - return getAuthorityPart().getDecoded(); - } - - private PathPart path; - - private PathPart getPathPart() { - return path == null - ? path = PathPart.fromEncoded(parsePath()) - : path; - } - - public String getPath() { - return getPathPart().getDecoded(); - } - - public String getEncodedPath() { - return getPathPart().getEncoded(); - } - - public List<String> getPathSegments() { - return getPathPart().getPathSegments(); - } - - private String parsePath() { - String uriString = this.uriString; - int ssi = findSchemeSeparator(); - - // If the URI is absolute. - if (ssi > -1) { - // Is there anything after the ':'? - boolean schemeOnly = ssi + 1 == uriString.length(); - if (schemeOnly) { - // Opaque URI. - return null; - } - - // A '/' after the ':' means this is hierarchical. - if (uriString.charAt(ssi + 1) != '/') { - // Opaque URI. - return null; - } - } else { - // All relative URIs are hierarchical. - } - - return parsePath(uriString, ssi); - } - - private Part query; - - private Part getQueryPart() { - return query == null - ? query = Part.fromEncoded(parseQuery()) : query; - } - - public String getEncodedQuery() { - return getQueryPart().getEncoded(); - } - - private String parseQuery() { - // It doesn't make sense to cache this index. We only ever - // calculate it once. - int qsi = uriString.indexOf('?', findSchemeSeparator()); - if (qsi == NOT_FOUND) { - return null; - } - - int fsi = findFragmentSeparator(); - - if (fsi == NOT_FOUND) { - return uriString.substring(qsi + 1); - } - - if (fsi < qsi) { - // Invalid. - return null; - } - - return uriString.substring(qsi + 1, fsi); - } - - public String getQuery() { - return getQueryPart().getDecoded(); - } - - private Part fragment; - - private Part getFragmentPart() { - return fragment == null - ? fragment = Part.fromEncoded(parseFragment()) : fragment; - } - - public String getEncodedFragment() { - return getFragmentPart().getEncoded(); - } - - private String parseFragment() { - int fsi = findFragmentSeparator(); - return fsi == NOT_FOUND ? null : uriString.substring(fsi + 1); - } - - public String getFragment() { - return getFragmentPart().getDecoded(); - } - - public String toString() { - return uriString; - } - - /** - * Parses an authority out of the given URI string. - * - * @param uriString URI string - * @param ssi scheme separator index, -1 for a relative URI - * - * @return the authority or null if none is found - */ - static String parseAuthority(String uriString, int ssi) { - int length = uriString.length(); - - // If "//" follows the scheme separator, we have an authority. - if (length > ssi + 2 - && uriString.charAt(ssi + 1) == '/' - && uriString.charAt(ssi + 2) == '/') { - // We have an authority. - - // Look for the start of the path, query, or fragment, or the - // end of the string. - int end = ssi + 3; - LOOP: while (end < length) { - switch (uriString.charAt(end)) { - case '/': // Start of path - case '?': // Start of query - case '#': // Start of fragment - break LOOP; - } - end++; - } - - return uriString.substring(ssi + 3, end); - } else { - return null; - } - - } - - /** - * Parses a path out of this given URI string. - * - * @param uriString URI string - * @param ssi scheme separator index, -1 for a relative URI - * - * @return the path - */ - static String parsePath(String uriString, int ssi) { - int length = uriString.length(); - - // Find start of path. - int pathStart; - if (length > ssi + 2 - && uriString.charAt(ssi + 1) == '/' - && uriString.charAt(ssi + 2) == '/') { - // Skip over authority to path. - pathStart = ssi + 3; - LOOP: while (pathStart < length) { - switch (uriString.charAt(pathStart)) { - case '?': // Start of query - case '#': // Start of fragment - return ""; // Empty path. - case '/': // Start of path! - break LOOP; - } - pathStart++; - } - } else { - // Path starts immediately after scheme separator. - pathStart = ssi + 1; - } - - // Find end of path. - int pathEnd = pathStart; - LOOP: while (pathEnd < length) { - switch (uriString.charAt(pathEnd)) { - case '?': // Start of query - case '#': // Start of fragment - break LOOP; - } - pathEnd++; - } - - return uriString.substring(pathStart, pathEnd); - } - - public Builder buildUpon() { - if (isHierarchical()) { - return new Builder() - .scheme(getScheme()) - .authority(getAuthorityPart()) - .path(getPathPart()) - .query(getQueryPart()) - .fragment(getFragmentPart()); - } else { - return new Builder() - .scheme(getScheme()) - .opaquePart(getSsp()) - .fragment(getFragmentPart()); - } - } - } - - /** - * Creates an opaque Uri from the given components. Encodes the ssp - * which means this method cannot be used to create hierarchical URIs. - * - * @param scheme of the URI - * @param ssp scheme-specific-part, everything between the - * scheme separator (':') and the fragment separator ('#'), which will - * get encoded - * @param fragment fragment, everything after the '#', null if undefined, - * will get encoded - * - * @throws NullPointerException if scheme or ssp is null - * @return Uri composed of the given scheme, ssp, and fragment - * - * @see Builder if you don't want the ssp and fragment to be encoded - */ - public static Uri__FromAndroid fromParts(String scheme, String ssp, - String fragment) { - if (scheme == null) { - throw new NullPointerException("scheme"); - } - if (ssp == null) { - throw new NullPointerException("ssp"); - } - - return new OpaqueUri(scheme, Part.fromDecoded(ssp), - Part.fromDecoded(fragment)); - } - - /** - * Opaque URI. - */ - private static class OpaqueUri extends Uri__FromAndroid { - - /** Used in parcelling. */ - static final int TYPE_ID = 2; - - private final String scheme; - private final Part ssp; - private final Part fragment; - - private OpaqueUri(String scheme, Part ssp, Part fragment) { - this.scheme = scheme; - this.ssp = ssp; - this.fragment = fragment == null ? Part.NULL : fragment; - } - - static Uri__FromAndroid readFrom(Parcel parcel) { - return new OpaqueUri( - parcel.readString(), - Part.readFrom(parcel), - Part.readFrom(parcel) - ); - } - - public int describeContents() { - return 0; - } - - public void writeToParcel(Parcel parcel, int flags) { - parcel.writeInt(TYPE_ID); - parcel.writeString(scheme); - ssp.writeTo(parcel); - fragment.writeTo(parcel); - } - - public boolean isHierarchical() { - return false; - } - - public boolean isRelative() { - return scheme == null; - } - - public String getScheme() { - return this.scheme; - } - - public String getEncodedSchemeSpecificPart() { - return ssp.getEncoded(); - } - - public String getSchemeSpecificPart() { - return ssp.getDecoded(); - } - - public String getAuthority() { - return null; - } - - public String getEncodedAuthority() { - return null; - } - - public String getPath() { - return null; - } - - public String getEncodedPath() { - return null; - } - - public String getQuery() { - return null; - } - - public String getEncodedQuery() { - return null; - } - - public String getFragment() { - return fragment.getDecoded(); - } - - public String getEncodedFragment() { - return fragment.getEncoded(); - } - - public List<String> getPathSegments() { - return Collections.emptyList(); - } - - public String getLastPathSegment() { - return null; - } - - public String getUserInfo() { - return null; - } - - public String getEncodedUserInfo() { - return null; - } - - public String getHost() { - return null; - } - - public int getPort() { - return -1; - } - - private volatile String cachedString = NOT_CACHED; - - public String toString() { - @SuppressWarnings("StringEquality") - boolean cached = cachedString != NOT_CACHED; - if (cached) { - return cachedString; - } - - StringBuilder sb = new StringBuilder(); - - sb.append(scheme).append(':'); - sb.append(getEncodedSchemeSpecificPart()); - - if (!fragment.isEmpty()) { - sb.append('#').append(fragment.getEncoded()); - } - - return cachedString = sb.toString(); - } - - public Builder buildUpon() { - return new Builder() - .scheme(this.scheme) - .opaquePart(this.ssp) - .fragment(this.fragment); - } - } - - /** - * Wrapper for path segment array. - */ - static class PathSegments extends AbstractList<String> - implements RandomAccess { - - static final PathSegments EMPTY = new PathSegments(null, 0); - - final String[] segments; - final int size; - - PathSegments(String[] segments, int size) { - this.segments = segments; - this.size = size; - } - - public String get(int index) { - if (index >= size) { - throw new IndexOutOfBoundsException(); - } - - return segments[index]; - } - - public int size() { - return this.size; - } - } - - /** - * Builds PathSegments. - */ - static class PathSegmentsBuilder { - - String[] segments; - int size = 0; - - void add(String segment) { - if (segments == null) { - segments = new String[4]; - } else if (size + 1 == segments.length) { - String[] expanded = new String[segments.length * 2]; - System.arraycopy(segments, 0, expanded, 0, segments.length); - segments = expanded; - } - - segments[size++] = segment; - } - - PathSegments build() { - if (segments == null) { - return PathSegments.EMPTY; - } - - try { - return new PathSegments(segments, size); - } finally { - // Makes sure this doesn't get reused. - segments = null; - } - } - } - - /** - * Support for hierarchical URIs. - */ - private abstract static class AbstractHierarchicalUri extends Uri__FromAndroid { - - public String getLastPathSegment() { - // TODO: If we haven't parsed all of the segments already, just - // grab the last one directly so we only allocate one string. - - List<String> segments = getPathSegments(); - int size = segments.size(); - if (size == 0) { - return null; - } - return segments.get(size - 1); - } - - private Part userInfo; - - private Part getUserInfoPart() { - return userInfo == null - ? userInfo = Part.fromEncoded(parseUserInfo()) : userInfo; - } - - public final String getEncodedUserInfo() { - return getUserInfoPart().getEncoded(); - } - - private String parseUserInfo() { - String authority = getEncodedAuthority(); - if (authority == null) { - return null; - } - - int end = authority.indexOf('@'); - return end == NOT_FOUND ? null : authority.substring(0, end); - } - - public String getUserInfo() { - return getUserInfoPart().getDecoded(); - } - - private volatile String host = NOT_CACHED; - - public String getHost() { - @SuppressWarnings("StringEquality") - boolean cached = (host != NOT_CACHED); - return cached ? host - : (host = parseHost()); - } - - private String parseHost() { - String authority = getEncodedAuthority(); - if (authority == null) { - return null; - } - - // Parse out user info and then port. - int userInfoSeparator = authority.indexOf('@'); - int portSeparator = authority.indexOf(':', userInfoSeparator); - - String encodedHost = portSeparator == NOT_FOUND - ? authority.substring(userInfoSeparator + 1) - : authority.substring(userInfoSeparator + 1, portSeparator); - - return decode(encodedHost); - } - - private volatile int port = NOT_CALCULATED; - - public int getPort() { - return port == NOT_CALCULATED - ? port = parsePort() - : port; - } - - private int parsePort() { - String authority = getEncodedAuthority(); - if (authority == null) { - return -1; - } - - // Make sure we look for the port separtor *after* the user info - // separator. We have URLs with a ':' in the user info. - int userInfoSeparator = authority.indexOf('@'); - int portSeparator = authority.indexOf(':', userInfoSeparator); - - if (portSeparator == NOT_FOUND) { - return -1; - } - - String portString = decode(authority.substring(portSeparator + 1)); - try { - return Integer.parseInt(portString); - } catch (NumberFormatException e) { - Log.w(LOG, "Error parsing port string.", e); - return -1; - } - } - } - - /** - * Hierarchical Uri. - */ - private static class HierarchicalUri extends AbstractHierarchicalUri { - - /** Used in parcelling. */ - static final int TYPE_ID = 3; - - private final String scheme; // can be null - private final Part authority; - private final PathPart path; - private final Part query; - private final Part fragment; - - private HierarchicalUri(String scheme, Part authority, PathPart path, - Part query, Part fragment) { - this.scheme = scheme; - this.authority = Part.nonNull(authority); - this.path = path == null ? PathPart.NULL : path; - this.query = Part.nonNull(query); - this.fragment = Part.nonNull(fragment); - } - - static Uri__FromAndroid readFrom(Parcel parcel) { - return new HierarchicalUri( - parcel.readString(), - Part.readFrom(parcel), - PathPart.readFrom(parcel), - Part.readFrom(parcel), - Part.readFrom(parcel) - ); - } - - public int describeContents() { - return 0; - } - - public void writeToParcel(Parcel parcel, int flags) { - parcel.writeInt(TYPE_ID); - parcel.writeString(scheme); - authority.writeTo(parcel); - path.writeTo(parcel); - query.writeTo(parcel); - fragment.writeTo(parcel); - } - - public boolean isHierarchical() { - return true; - } - - public boolean isRelative() { - return scheme == null; - } - - public String getScheme() { - return scheme; - } - - private Part ssp; - - private Part getSsp() { - return ssp == null - ? ssp = Part.fromEncoded(makeSchemeSpecificPart()) : ssp; - } - - public String getEncodedSchemeSpecificPart() { - return getSsp().getEncoded(); - } - - public String getSchemeSpecificPart() { - return getSsp().getDecoded(); - } - - /** - * Creates the encoded scheme-specific part from its sub parts. - */ - private String makeSchemeSpecificPart() { - StringBuilder builder = new StringBuilder(); - appendSspTo(builder); - return builder.toString(); - } - - private void appendSspTo(StringBuilder builder) { - String encodedAuthority = authority.getEncoded(); - if (encodedAuthority != null) { - // Even if the authority is "", we still want to append "//". - builder.append("//").append(encodedAuthority); - } - - String encodedPath = path.getEncoded(); - if (encodedPath != null) { - builder.append(encodedPath); - } - - if (!query.isEmpty()) { - builder.append('?').append(query.getEncoded()); - } - } - - public String getAuthority() { - return this.authority.getDecoded(); - } - - public String getEncodedAuthority() { - return this.authority.getEncoded(); - } - - public String getEncodedPath() { - return this.path.getEncoded(); - } - - public String getPath() { - return this.path.getDecoded(); - } - - public String getQuery() { - return this.query.getDecoded(); - } - - public String getEncodedQuery() { - return this.query.getEncoded(); - } - - public String getFragment() { - return this.fragment.getDecoded(); - } - - public String getEncodedFragment() { - return this.fragment.getEncoded(); - } - - public List<String> getPathSegments() { - return this.path.getPathSegments(); - } - - private volatile String uriString = NOT_CACHED; - - @Override - public String toString() { - @SuppressWarnings("StringEquality") - boolean cached = (uriString != NOT_CACHED); - return cached ? uriString - : (uriString = makeUriString()); - } - - private String makeUriString() { - StringBuilder builder = new StringBuilder(); - - if (scheme != null) { - builder.append(scheme).append(':'); - } - - appendSspTo(builder); - - if (!fragment.isEmpty()) { - builder.append('#').append(fragment.getEncoded()); - } - - return builder.toString(); - } - - public Builder buildUpon() { - return new Builder() - .scheme(scheme) - .authority(authority) - .path(path) - .query(query) - .fragment(fragment); - } - } - - /** - * Helper class for building or manipulating URI references. Not safe for - * concurrent use. - * - * <p>An absolute hierarchical URI reference follows the pattern: - * {@code <scheme>://<authority><absolute path>?<query>#<fragment>} - * - * <p>Relative URI references (which are always hierarchical) follow one - * of two patterns: {@code <relative or absolute path>?<query>#<fragment>} - * or {@code //<authority><absolute path>?<query>#<fragment>} - * - * <p>An opaque URI follows this pattern: - * {@code <scheme>:<opaque part>#<fragment>} - */ - public static final class Builder { - - private String scheme; - private Part opaquePart; - private Part authority; - private PathPart path; - private Part query; - private Part fragment; - - /** - * Constructs a new Builder. - */ - public Builder() {} - - /** - * Sets the scheme. - * - * @param scheme name or {@code null} if this is a relative Uri - */ - public Builder scheme(String scheme) { - this.scheme = scheme; - return this; - } - - Builder opaquePart(Part opaquePart) { - this.opaquePart = opaquePart; - return this; - } - - /** - * Encodes and sets the given opaque scheme-specific-part. - * - * @param opaquePart decoded opaque part - */ - public Builder opaquePart(String opaquePart) { - return opaquePart(Part.fromDecoded(opaquePart)); - } - - /** - * Sets the previously encoded opaque scheme-specific-part. - * - * @param opaquePart encoded opaque part - */ - public Builder encodedOpaquePart(String opaquePart) { - return opaquePart(Part.fromEncoded(opaquePart)); - } - - Builder authority(Part authority) { - // This URI will be hierarchical. - this.opaquePart = null; - - this.authority = authority; - return this; - } - - /** - * Encodes and sets the authority. - */ - public Builder authority(String authority) { - return authority(Part.fromDecoded(authority)); - } - - /** - * Sets the previously encoded authority. - */ - public Builder encodedAuthority(String authority) { - return authority(Part.fromEncoded(authority)); - } - - Builder path(PathPart path) { - // This URI will be hierarchical. - this.opaquePart = null; - - this.path = path; - return this; - } - - /** - * Sets the path. Leaves '/' characters intact but encodes others as - * necessary. - * - * <p>If the path is not null and doesn't start with a '/', and if - * you specify a scheme and/or authority, the builder will prepend the - * given path with a '/'. - */ - public Builder path(String path) { - return path(PathPart.fromDecoded(path)); - } - - /** - * Sets the previously encoded path. - * - * <p>If the path is not null and doesn't start with a '/', and if - * you specify a scheme and/or authority, the builder will prepend the - * given path with a '/'. - */ - public Builder encodedPath(String path) { - return path(PathPart.fromEncoded(path)); - } - - /** - * Encodes the given segment and appends it to the path. - */ - public Builder appendPath(String newSegment) { - return path(PathPart.appendDecodedSegment(path, newSegment)); - } - - /** - * Appends the given segment to the path. - */ - public Builder appendEncodedPath(String newSegment) { - return path(PathPart.appendEncodedSegment(path, newSegment)); - } - - Builder query(Part query) { - // This URI will be hierarchical. - this.opaquePart = null; - - this.query = query; - return this; - } - - /** - * Encodes and sets the query. - */ - public Builder query(String query) { - return query(Part.fromDecoded(query)); - } - - /** - * Sets the previously encoded query. - */ - public Builder encodedQuery(String query) { - return query(Part.fromEncoded(query)); - } - - Builder fragment(Part fragment) { - this.fragment = fragment; - return this; - } - - /** - * Encodes and sets the fragment. - */ - public Builder fragment(String fragment) { - return fragment(Part.fromDecoded(fragment)); - } - - /** - * Sets the previously encoded fragment. - */ - public Builder encodedFragment(String fragment) { - return fragment(Part.fromEncoded(fragment)); - } - - /** - * Encodes the key and value and then appends the parameter to the - * query string. - * - * @param key which will be encoded - * @param value which will be encoded - */ - public Builder appendQueryParameter(String key, String value) { - // This URI will be hierarchical. - this.opaquePart = null; - - String encodedParameter = encode(key, null) + "=" - + encode(value, null); - - if (query == null) { - query = Part.fromEncoded(encodedParameter); - return this; - } - - String oldQuery = query.getEncoded(); - if (oldQuery == null || oldQuery.length() == 0) { - query = Part.fromEncoded(encodedParameter); - } else { - query = Part.fromEncoded(oldQuery + "&" + encodedParameter); - } - - return this; - } - - /** - * Constructs a Uri with the current attributes. - * - * @throws UnsupportedOperationException if the URI is opaque and the - * scheme is null - */ - public Uri__FromAndroid build() { - if (opaquePart != null) { - if (this.scheme == null) { - throw new UnsupportedOperationException( - "An opaque URI must have a scheme."); - } - - return new OpaqueUri(scheme, opaquePart, fragment); - } else { - // Hierarchical URIs should not return null for getPath(). - PathPart path = this.path; - if (path == null || path == PathPart.NULL) { - path = PathPart.EMPTY; - } else { - // If we have a scheme and/or authority, the path must - // be absolute. Prepend it with a '/' if necessary. - if (hasSchemeOrAuthority()) { - path = PathPart.makeAbsolute(path); - } - } - - return new HierarchicalUri( - scheme, authority, path, query, fragment); - } - } - - private boolean hasSchemeOrAuthority() { - return scheme != null - || (authority != null && authority != Part.NULL); - - } - - @Override - public String toString() { - return build().toString(); - } - } - - /** - * Searches the query string for parameter values with the given key. - * - * @param key which will be encoded - * - * @throws UnsupportedOperationException if this isn't a hierarchical URI - * @throws NullPointerException if key is null - * - * @return a list of decoded values - */ - public List<String> getQueryParameters(String key) { - if (isOpaque()) { - throw new UnsupportedOperationException(NOT_HIERARCHICAL); - } - - String query = getEncodedQuery(); - if (query == null) { - return Collections.emptyList(); - } - - String encodedKey; - try { - encodedKey = URLEncoder.encode(key, DEFAULT_ENCODING); - } catch (UnsupportedEncodingException e) { - throw new AssertionError(e); - } - - // Prepend query with "&" making the first parameter the same as the - // rest. - query = "&" + query; - - // Parameter prefix. - String prefix = "&" + encodedKey + "="; - - ArrayList<String> values = new ArrayList<String>(); - - int start = 0; - int length = query.length(); - while (start < length) { - start = query.indexOf(prefix, start); - - if (start == -1) { - // No more values. - break; - } - - // Move start to start of value. - start += prefix.length(); - - // Find end of value. - int end = query.indexOf('&', start); - if (end == -1) { - end = query.length(); - } - - String value = query.substring(start, end); - values.add(decode(value)); - - start = end; - } - - return Collections.unmodifiableList(values); - } - - /** - * Searches the query string for the first value with the given key. - * - * @param key which will be encoded - * @throws UnsupportedOperationException if this isn't a hierarchical URI - * @throws NullPointerException if key is null - * - * @return the decoded value or null if no parameter is found - */ - public String getQueryParameter(String key) { - if (isOpaque()) { - throw new UnsupportedOperationException(NOT_HIERARCHICAL); - } - - String query = getEncodedQuery(); - - if (query == null) { - return null; - } - - String encodedKey; - try { - encodedKey = URLEncoder.encode(key, DEFAULT_ENCODING); - } catch (UnsupportedEncodingException e) { - throw new AssertionError(e); - } - - String prefix = encodedKey + "="; - - if (query.length() < prefix.length()) { - return null; - } - - int start; - if (query.startsWith(prefix)) { - // It's the first parameter. - start = prefix.length(); - } else { - // It must be later in the query string. - prefix = "&" + prefix; - start = query.indexOf(prefix); - - if (start == -1) { - // Not found. - return null; - } - - start += prefix.length(); - } - - // Find end of value. - int end = query.indexOf('&', start); - if (end == -1) { - end = query.length(); - } - - String value = query.substring(start, end); - return decode(value); - } - - /** Identifies a null parcelled Uri. */ - private static final int NULL_TYPE_ID = 0; - - /** - * Reads Uris from Parcels. - */ - public static final Parcelable.Creator<Uri__FromAndroid> CREATOR - = new Parcelable.Creator<Uri__FromAndroid>() { - public Uri__FromAndroid createFromParcel(Parcel in) { - int type = in.readInt(); - switch (type) { - case NULL_TYPE_ID: return null; - case StringUri.TYPE_ID: return StringUri.readFrom(in); - case OpaqueUri.TYPE_ID: return OpaqueUri.readFrom(in); - case HierarchicalUri.TYPE_ID: - return HierarchicalUri.readFrom(in); - } - - throw new AssertionError("Unknown URI type: " + type); - } - - public Uri__FromAndroid[] newArray(int size) { - return new Uri__FromAndroid[size]; - } - }; - - /** - * Writes a Uri to a Parcel. - * - * @param out parcel to write to - * @param uri to write, can be null - */ - public static void writeToParcel(Parcel out, Uri__FromAndroid uri) { - if (uri == null) { - out.writeInt(NULL_TYPE_ID); - } else { - uri.writeToParcel(out, 0); - } - } - - private static final char[] HEX_DIGITS = "0123456789ABCDEF".toCharArray(); - - /** - * Encodes characters in the given string as '%'-escaped octets - * using the UTF-8 scheme. Leaves letters ("A-Z", "a-z"), numbers - * ("0-9"), and unreserved characters ("_-!.~'()*") intact. Encodes - * all other characters. - * - * @param s string to encode - * @return an encoded version of s suitable for use as a URI component, - * or null if s is null - */ - public static String encode(String s) { - return encode(s, null); - } - - /** - * Encodes characters in the given string as '%'-escaped octets - * using the UTF-8 scheme. Leaves letters ("A-Z", "a-z"), numbers - * ("0-9"), and unreserved characters ("_-!.~'()*") intact. Encodes - * all other characters with the exception of those specified in the - * allow argument. - * - * @param s string to encode - * @param allow set of additional characters to allow in the encoded form, - * null if no characters should be skipped - * @return an encoded version of s suitable for use as a URI component, - * or null if s is null - */ - public static String encode(String s, String allow) { - if (s == null) { - return null; - } - - // Lazily-initialized buffers. - StringBuilder encoded = null; - - int oldLength = s.length(); - - // This loop alternates between copying over allowed characters and - // encoding in chunks. This results in fewer method calls and - // allocations than encoding one character at a time. - int current = 0; - while (current < oldLength) { - // Start in "copying" mode where we copy over allowed chars. - - // Find the next character which needs to be encoded. - int nextToEncode = current; - while (nextToEncode < oldLength - && isAllowed(s.charAt(nextToEncode), allow)) { - nextToEncode++; - } - - // If there's nothing more to encode... - if (nextToEncode == oldLength) { - if (current == 0) { - // We didn't need to encode anything! - return s; - } else { - // Presumably, we've already done some encoding. - encoded.append(s, current, oldLength); - return encoded.toString(); - } - } - - if (encoded == null) { - encoded = new StringBuilder(); - } - - if (nextToEncode > current) { - // Append allowed characters leading up to this point. - encoded.append(s, current, nextToEncode); - } else { - // assert nextToEncode == current - } - - // Switch to "encoding" mode. - - // Find the next allowed character. - current = nextToEncode; - int nextAllowed = current + 1; - while (nextAllowed < oldLength - && !isAllowed(s.charAt(nextAllowed), allow)) { - nextAllowed++; - } - - // Convert the substring to bytes and encode the bytes as - // '%'-escaped octets. - String toEncode = s.substring(current, nextAllowed); - try { - byte[] bytes = toEncode.getBytes(DEFAULT_ENCODING); - int bytesLength = bytes.length; - for (int i = 0; i < bytesLength; i++) { - encoded.append('%'); - encoded.append(HEX_DIGITS[(bytes[i] & 0xf0) >> 4]); - encoded.append(HEX_DIGITS[bytes[i] & 0xf]); - } - } catch (UnsupportedEncodingException e) { - throw new AssertionError(e); - } - - current = nextAllowed; - } - - // Encoded could still be null at this point if s is empty. - return encoded == null ? s : encoded.toString(); - } - - /** - * Returns true if the given character is allowed. - * - * @param c character to check - * @param allow characters to allow - * @return true if the character is allowed or false if it should be - * encoded - */ - private static boolean isAllowed(char c, String allow) { - return (c >= 'A' && c <= 'Z') - || (c >= 'a' && c <= 'z') - || (c >= '0' && c <= '9') - || "_-!.~'()*".indexOf(c) != NOT_FOUND - || (allow != null && allow.indexOf(c) != NOT_FOUND); - } - - /** Unicode replacement character: \\uFFFD. */ - private static final byte[] REPLACEMENT = { (byte) 0xFF, (byte) 0xFD }; - - /** - * Decodes '%'-escaped octets in the given string using the UTF-8 scheme. - * Replaces invalid octets with the unicode replacement character - * ("\\uFFFD"). - * - * @param s encoded string to decode - * @return the given string with escaped octets decoded, or null if - * s is null - */ - public static String decode(String s) { - /* - Compared to java.net.URLEncoderDecoder.decode(), this method decodes a - chunk at a time instead of one character at a time, and it doesn't - throw exceptions. It also only allocates memory when necessary--if - there's nothing to decode, this method won't do much. - */ - - if (s == null) { - return null; - } - - // Lazily-initialized buffers. - StringBuilder decoded = null; - ByteArrayOutputStream out = null; - - int oldLength = s.length(); - - // This loop alternates between copying over normal characters and - // escaping in chunks. This results in fewer method calls and - // allocations than decoding one character at a time. - int current = 0; - while (current < oldLength) { - // Start in "copying" mode where we copy over normal characters. - - // Find the next escape sequence. - int nextEscape = s.indexOf('%', current); - - if (nextEscape == NOT_FOUND) { - if (decoded == null) { - // We didn't actually decode anything. - return s; - } else { - // Append the remainder and return the decoded string. - decoded.append(s, current, oldLength); - return decoded.toString(); - } - } - - // Prepare buffers. - if (decoded == null) { - // Looks like we're going to need the buffers... - // We know the new string will be shorter. Using the old length - // may overshoot a bit, but it will save us from resizing the - // buffer. - decoded = new StringBuilder(oldLength); - out = new ByteArrayOutputStream(4); - } else { - // Clear decoding buffer. - out.reset(); - } - - // Append characters leading up to the escape. - if (nextEscape > current) { - decoded.append(s, current, nextEscape); - - current = nextEscape; - } else { - // assert current == nextEscape - } - - // Switch to "decoding" mode where we decode a string of escape - // sequences. - - // Decode and append escape sequences. Escape sequences look like - // "%ab" where % is literal and a and b are hex digits. - try { - do { - if (current + 2 >= oldLength) { - // Truncated escape sequence. - out.write(REPLACEMENT); - } else { - int a = Character.digit(s.charAt(current + 1), 16); - int b = Character.digit(s.charAt(current + 2), 16); - - if (a == -1 || b == -1) { - // Non hex digits. - out.write(REPLACEMENT); - } else { - // Combine the hex digits into one byte and write. - out.write((a << 4) + b); - } - } - - // Move passed the escape sequence. - current += 3; - } while (current < oldLength && s.charAt(current) == '%'); - - // Decode UTF-8 bytes into a string and append it. - decoded.append(out.toString(DEFAULT_ENCODING)); - } catch (UnsupportedEncodingException e) { - throw new AssertionError(e); - } catch (IOException e) { - throw new AssertionError(e); - } - } - - // If we don't have a buffer, we didn't have to decode anything. - return decoded == null ? s : decoded.toString(); - } - - /** - * Support for part implementations. - */ - static abstract class AbstractPart { - - /** - * Enum which indicates which representation of a given part we have. - */ - static class Representation { - static final int BOTH = 0; - static final int ENCODED = 1; - static final int DECODED = 2; - } - - volatile String encoded; - volatile String decoded; - - AbstractPart(String encoded, String decoded) { - this.encoded = encoded; - this.decoded = decoded; - } - - abstract String getEncoded(); - - final String getDecoded() { - @SuppressWarnings("StringEquality") - boolean hasDecoded = decoded != NOT_CACHED; - return hasDecoded ? decoded : (decoded = decode(encoded)); - } - - final void writeTo(Parcel parcel) { - @SuppressWarnings("StringEquality") - boolean hasEncoded = encoded != NOT_CACHED; - - @SuppressWarnings("StringEquality") - boolean hasDecoded = decoded != NOT_CACHED; - - if (hasEncoded && hasDecoded) { - parcel.writeInt(Representation.BOTH); - parcel.writeString(encoded); - parcel.writeString(decoded); - } else if (hasEncoded) { - parcel.writeInt(Representation.ENCODED); - parcel.writeString(encoded); - } else if (hasDecoded) { - parcel.writeInt(Representation.DECODED); - parcel.writeString(decoded); - } else { - throw new AssertionError(); - } - } - } - - /** - * Immutable wrapper of encoded and decoded versions of a URI part. Lazily - * creates the encoded or decoded version from the other. - */ - static class Part extends AbstractPart { - - /** A part with null values. */ - static final Part NULL = new EmptyPart(null); - - /** A part with empty strings for values. */ - static final Part EMPTY = new EmptyPart(""); - - private Part(String encoded, String decoded) { - super(encoded, decoded); - } - - boolean isEmpty() { - return false; - } - - String getEncoded() { - @SuppressWarnings("StringEquality") - boolean hasEncoded = encoded != NOT_CACHED; - return hasEncoded ? encoded : (encoded = encode(decoded)); - } - - static Part readFrom(Parcel parcel) { - int representation = parcel.readInt(); - switch (representation) { - case Representation.BOTH: - return from(parcel.readString(), parcel.readString()); - case Representation.ENCODED: - return fromEncoded(parcel.readString()); - case Representation.DECODED: - return fromDecoded(parcel.readString()); - default: - throw new AssertionError(); - } - } - - /** - * Returns given part or {@link #NULL} if the given part is null. - */ - static Part nonNull(Part part) { - return part == null ? NULL : part; - } - - /** - * Creates a part from the encoded string. - * - * @param encoded part string - */ - static Part fromEncoded(String encoded) { - return from(encoded, NOT_CACHED); - } - - /** - * Creates a part from the decoded string. - * - * @param decoded part string - */ - static Part fromDecoded(String decoded) { - return from(NOT_CACHED, decoded); - } - - /** - * Creates a part from the encoded and decoded strings. - * - * @param encoded part string - * @param decoded part string - */ - static Part from(String encoded, String decoded) { - // We have to check both encoded and decoded in case one is - // NOT_CACHED. - - if (encoded == null) { - return NULL; - } - if (encoded.length() == 0) { - return EMPTY; - } - - if (decoded == null) { - return NULL; - } - if (decoded .length() == 0) { - return EMPTY; - } - - return new Part(encoded, decoded); - } - - private static class EmptyPart extends Part { - public EmptyPart(String value) { - super(value, value); - } - - @Override - boolean isEmpty() { - return true; - } - } - } - - /** - * Immutable wrapper of encoded and decoded versions of a path part. Lazily - * creates the encoded or decoded version from the other. - */ - static class PathPart extends AbstractPart { - - /** A part with null values. */ - static final PathPart NULL = new PathPart(null, null); - - /** A part with empty strings for values. */ - static final PathPart EMPTY = new PathPart("", ""); - - private PathPart(String encoded, String decoded) { - super(encoded, decoded); - } - - String getEncoded() { - @SuppressWarnings("StringEquality") - boolean hasEncoded = encoded != NOT_CACHED; - - // Don't encode '/'. - return hasEncoded ? encoded : (encoded = encode(decoded, "/")); - } - - /** - * Cached path segments. This doesn't need to be volatile--we don't - * care if other threads see the result. - */ - private PathSegments pathSegments; - - /** - * Gets the individual path segments. Parses them if necessary. - * - * @return parsed path segments or null if this isn't a hierarchical - * URI - */ - PathSegments getPathSegments() { - if (pathSegments != null) { - return pathSegments; - } - - String path = getEncoded(); - if (path == null) { - return pathSegments = PathSegments.EMPTY; - } - - PathSegmentsBuilder segmentBuilder = new PathSegmentsBuilder(); - - int previous = 0; - int current; - while ((current = path.indexOf('/', previous)) > -1) { - // This check keeps us from adding a segment if the path starts - // '/' and an empty segment for "//". - if (previous < current) { - String decodedSegment - = decode(path.substring(previous, current)); - segmentBuilder.add(decodedSegment); - } - previous = current + 1; - } - - // Add in the final path segment. - if (previous < path.length()) { - segmentBuilder.add(decode(path.substring(previous))); - } - - return pathSegments = segmentBuilder.build(); - } - - static PathPart appendEncodedSegment(PathPart oldPart, - String newSegment) { - // If there is no old path, should we make the new path relative - // or absolute? I pick absolute. - - if (oldPart == null) { - // No old path. - return fromEncoded("/" + newSegment); - } - - String oldPath = oldPart.getEncoded(); - - if (oldPath == null) { - oldPath = ""; - } - - int oldPathLength = oldPath.length(); - String newPath; - if (oldPathLength == 0) { - // No old path. - newPath = "/" + newSegment; - } else if (oldPath.charAt(oldPathLength - 1) == '/') { - newPath = oldPath + newSegment; - } else { - newPath = oldPath + "/" + newSegment; - } - - return fromEncoded(newPath); - } - - static PathPart appendDecodedSegment(PathPart oldPart, String decoded) { - String encoded = encode(decoded); - - // TODO: Should we reuse old PathSegments? Probably not. - return appendEncodedSegment(oldPart, encoded); - } - - static PathPart readFrom(Parcel parcel) { - int representation = parcel.readInt(); - switch (representation) { - case Representation.BOTH: - return from(parcel.readString(), parcel.readString()); - case Representation.ENCODED: - return fromEncoded(parcel.readString()); - case Representation.DECODED: - return fromDecoded(parcel.readString()); - default: - throw new AssertionError(); - } - } - - /** - * Creates a path from the encoded string. - * - * @param encoded part string - */ - static PathPart fromEncoded(String encoded) { - return from(encoded, NOT_CACHED); - } - - /** - * Creates a path from the decoded string. - * - * @param decoded part string - */ - static PathPart fromDecoded(String decoded) { - return from(NOT_CACHED, decoded); - } - - /** - * Creates a path from the encoded and decoded strings. - * - * @param encoded part string - * @param decoded part string - */ - static PathPart from(String encoded, String decoded) { - if (encoded == null) { - return NULL; - } - - if (encoded.length() == 0) { - return EMPTY; - } - - return new PathPart(encoded, decoded); - } - - /** - * Prepends path values with "/" if they're present, not empty, and - * they don't already start with "/". - */ - static PathPart makeAbsolute(PathPart oldPart) { - @SuppressWarnings("StringEquality") - boolean encodedCached = oldPart.encoded != NOT_CACHED; - - // We don't care which version we use, and we don't want to force - // unneccessary encoding/decoding. - String oldPath = encodedCached ? oldPart.encoded : oldPart.decoded; - - if (oldPath == null || oldPath.length() == 0 - || oldPath.startsWith("/")) { - return oldPart; - } - - // Prepend encoded string if present. - String newEncoded = encodedCached - ? "/" + oldPart.encoded : NOT_CACHED; - - // Prepend decoded string if present. - @SuppressWarnings("StringEquality") - boolean decodedCached = oldPart.decoded != NOT_CACHED; - String newDecoded = decodedCached - ? "/" + oldPart.decoded - : NOT_CACHED; - - return new PathPart(newEncoded, newDecoded); - } - } - - /** - * Creates a new Uri by appending an already-encoded path segment to a - * base Uri. - * - * @param baseUri Uri to append path segment to - * @param pathSegment encoded path segment to append - * @return a new Uri based on baseUri with the given segment appended to - * the path - * @throws NullPointerException if baseUri is null - */ - public static Uri__FromAndroid withAppendedPath(Uri__FromAndroid baseUri, String pathSegment) { - Builder builder = baseUri.buildUpon(); - builder = builder.appendEncodedPath(pathSegment); - return builder.build(); - } -} |