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| author | Cash Costello <cash.costello@gmail.com> | 2010-10-24 21:08:27 +0000 |
|---|---|---|
| committer | Cash Costello <cash.costello@gmail.com> | 2010-10-24 21:08:27 +0000 |
| commit | da1493b95a2f0b5000a487ae373c9318c58d0b2d (patch) | |
| tree | a339b053ade9fb15a1717bdf248a59afc9b3d239 /vendors/uploadify/com/adobe/net/URI.as | |
| parent | 5161b1c8fdc8ff69005f864a89127fc18db6d4ed (diff) | |
| download | elgg-da1493b95a2f0b5000a487ae373c9318c58d0b2d.tar.gz elgg-da1493b95a2f0b5000a487ae373c9318c58d0b2d.tar.bz2 | |
partial implementation of flash uploader
Diffstat (limited to 'vendors/uploadify/com/adobe/net/URI.as')
| -rw-r--r-- | vendors/uploadify/com/adobe/net/URI.as | 2466 |
1 files changed, 2466 insertions, 0 deletions
diff --git a/vendors/uploadify/com/adobe/net/URI.as b/vendors/uploadify/com/adobe/net/URI.as new file mode 100644 index 000000000..d43ce9fa2 --- /dev/null +++ b/vendors/uploadify/com/adobe/net/URI.as @@ -0,0 +1,2466 @@ +/*
+ Copyright (c) 2008, Adobe Systems Incorporated
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of Adobe Systems Incorporated nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package com.adobe.net
+{
+ import flash.utils.ByteArray;
+
+ /**
+ * This class implements functions and utilities for working with URI's
+ * (Universal Resource Identifiers). For technical description of the
+ * URI syntax, please see RFC 3986 at http://www.ietf.org/rfc/rfc3986.txt
+ * or do a web search for "rfc 3986".
+ *
+ * <p>The most important aspect of URI's to understand is that URI's
+ * and URL's are not strings. URI's are complex data structures that
+ * encapsulate many pieces of information. The string version of a
+ * URI is the serialized representation of that data structure. This
+ * string serialization is used to provide a human readable
+ * representation and a means to transport the data over the network
+ * where it can then be parsed back into its' component parts.</p>
+ *
+ * <p>URI's fall into one of three categories:
+ * <ul>
+ * <li><scheme>:<scheme-specific-part>#<fragment> (non-hierarchical)</li>
+ * <li><scheme>:<authority><path>?<query>#<fragment> (hierarchical)</li>
+ * <li><path>?<query>#<fragment> (relative hierarchical)</li>
+ * </ul></p>
+ *
+ * <p>The query and fragment parts are optional.</p>
+ *
+ * <p>This class supports both non-hierarchical and hierarchical URI's</p>
+ *
+ * <p>This class is intended to be used "as-is" for the vast majority
+ * of common URI's. However, if your application requires a custom
+ * URI syntax (e.g. custom query syntax or special handling of
+ * non-hierarchical URI's), this class can be fully subclassed. If you
+ * intended to subclass URI, please see the source code for complete
+ * documation on protected members and protected fuctions.</p>
+ *
+ * @langversion ActionScript 3.0
+ * @playerversion Flash 9.0
+ */
+ public class URI
+ {
+ // Here we define which characters must be escaped for each
+ // URI part. The characters that must be escaped for each
+ // part differ depending on what would cause ambiguous parsing.
+ // RFC 3986 sec. 2.4 states that characters should only be
+ // encoded when they would conflict with subcomponent delimiters.
+ // We don't want to over-do the escaping. We only want to escape
+ // the minimum needed to prevent parsing problems.
+
+ // space and % must be escaped in all cases. '%' is the delimiter
+ // for escaped characters.
+ public static const URImustEscape:String = " %";
+
+ // Baseline of what characters must be escaped
+ public static const URIbaselineEscape:String = URImustEscape + ":?#/@";
+
+ // Characters that must be escaped in the part part.
+ public static const URIpathEscape:String = URImustEscape + "?#";
+
+ // Characters that must be escaped in the query part, if setting
+ // the query as a whole string. If the query is set by
+ // name/value, URIqueryPartEscape is used instead.
+ public static const URIqueryEscape:String = URImustEscape + "#";
+
+ // This is what each name/value pair must escape "&=" as well
+ // so they don't conflict with the "param=value¶m2=value2"
+ // syntax.
+ public static const URIqueryPartEscape:String = URImustEscape + "#&=";
+
+ // Non-hierarchical URI's can have query and fragment parts, but
+ // we also want to prevent '/' otherwise it might end up looking
+ // like a hierarchical URI to the parser.
+ public static const URInonHierEscape:String = URImustEscape + "?#/";
+
+ // Baseline uninitialized setting for the URI scheme.
+ public static const UNKNOWN_SCHEME:String = "unknown";
+
+ // The following bitmaps are used for performance enhanced
+ // character escaping.
+
+ // Baseline characters that need to be escaped. Many parts use
+ // this.
+ protected static const URIbaselineExcludedBitmap:URIEncodingBitmap =
+ new URIEncodingBitmap(URIbaselineEscape);
+
+ // Scheme escaping bitmap
+ protected static const URIschemeExcludedBitmap:URIEncodingBitmap =
+ URIbaselineExcludedBitmap;
+
+ // User/pass escaping bitmap
+ protected static const URIuserpassExcludedBitmap:URIEncodingBitmap =
+ URIbaselineExcludedBitmap;
+
+ // Authority escaping bitmap
+ protected static const URIauthorityExcludedBitmap:URIEncodingBitmap =
+ URIbaselineExcludedBitmap;
+
+ // Port escaping bitmap
+ protected static const URIportExludedBitmap:URIEncodingBitmap =
+ URIbaselineExcludedBitmap;
+
+ // Path escaping bitmap
+ protected static const URIpathExcludedBitmap:URIEncodingBitmap =
+ new URIEncodingBitmap(URIpathEscape);
+
+ // Query (whole) escaping bitmap
+ protected static const URIqueryExcludedBitmap:URIEncodingBitmap =
+ new URIEncodingBitmap(URIqueryEscape);
+
+ // Query (individual parts) escaping bitmap
+ protected static const URIqueryPartExcludedBitmap:URIEncodingBitmap =
+ new URIEncodingBitmap(URIqueryPartEscape);
+
+ // Fragments are the last part in the URI. They only need to
+ // escape space, '#', and '%'. Turns out that is what query
+ // uses too.
+ protected static const URIfragmentExcludedBitmap:URIEncodingBitmap =
+ URIqueryExcludedBitmap;
+
+ // Characters that need to be escaped in the non-hierarchical part
+ protected static const URInonHierexcludedBitmap:URIEncodingBitmap =
+ new URIEncodingBitmap(URInonHierEscape);
+
+ // Values used by getRelation()
+ public static const NOT_RELATED:int = 0;
+ public static const CHILD:int = 1;
+ public static const EQUAL:int = 2;
+ public static const PARENT:int = 3;
+
+ //-------------------------------------------------------------------
+ // protected class members
+ //-------------------------------------------------------------------
+ protected var _valid:Boolean = false;
+ protected var _relative:Boolean = false;
+ protected var _scheme:String = "";
+ protected var _authority:String = "";
+ protected var _username:String = "";
+ protected var _password:String = "";
+ protected var _port:String = "";
+ protected var _path:String = "";
+ protected var _query:String = "";
+ protected var _fragment:String = "";
+ protected var _nonHierarchical:String = "";
+ protected static var _resolver:IURIResolver = null;
+
+
+ /**
+ * URI Constructor. If no string is given, this will initialize
+ * this URI object to a blank URI.
+ */
+ public function URI(uri:String = null) : void
+ {
+ if (uri == null)
+ initialize();
+ else
+ constructURI(uri);
+ }
+
+
+ /**
+ * @private
+ * Method that loads the URI from the given string.
+ */
+ protected function constructURI(uri:String) : Boolean
+ {
+ if (!parseURI(uri))
+ _valid = false;
+
+ return isValid();
+ }
+
+
+ /**
+ * @private Private initializiation.
+ */
+ protected function initialize() : void
+ {
+ _valid = false;
+ _relative = false;
+
+ _scheme = UNKNOWN_SCHEME;
+ _authority = "";
+ _username = "";
+ _password = "";
+ _port = "";
+ _path = "";
+ _query = "";
+ _fragment = "";
+
+ _nonHierarchical = "";
+ }
+
+ /**
+ * @private Accessor to explicitly set/get the hierarchical
+ * state of the URI.
+ */
+ protected function set hierState(state:Boolean) : void
+ {
+ if (state)
+ {
+ // Clear the non-hierarchical data
+ _nonHierarchical = "";
+
+ // Also set the state vars while we are at it
+ if (_scheme == "" || _scheme == UNKNOWN_SCHEME)
+ _relative = true;
+ else
+ _relative = false;
+
+ if (_authority.length == 0 && _path.length == 0)
+ _valid = false;
+ else
+ _valid = true;
+ }
+ else
+ {
+ // Clear the hierarchical data
+ _authority = "";
+ _username = "";
+ _password = "";
+ _port = "";
+ _path = "";
+
+ _relative = false;
+
+ if (_scheme == "" || _scheme == UNKNOWN_SCHEME)
+ _valid = false;
+ else
+ _valid = true;
+ }
+ }
+ protected function get hierState() : Boolean
+ {
+ return (_nonHierarchical.length == 0);
+ }
+
+
+ /**
+ * @private Functions that performs some basic consistency validation.
+ */
+ protected function validateURI() : Boolean
+ {
+ // Check the scheme
+ if (isAbsolute())
+ {
+ if (_scheme.length <= 1 || _scheme == UNKNOWN_SCHEME)
+ {
+ // we probably parsed a C:\ type path or no scheme
+ return false;
+ }
+ else if (verifyAlpha(_scheme) == false)
+ return false; // Scheme contains bad characters
+ }
+
+ if (hierState)
+ {
+ if (_path.search('\\') != -1)
+ return false; // local path
+ else if (isRelative() == false && _scheme == UNKNOWN_SCHEME)
+ return false; // It's an absolute URI, but it has a bad scheme
+ }
+ else
+ {
+ if (_nonHierarchical.search('\\') != -1)
+ return false; // some kind of local path
+ }
+
+ // Looks like it's ok.
+ return true;
+ }
+
+
+ /**
+ * @private
+ *
+ * Given a URI in string format, parse that sucker into its basic
+ * components and assign them to this object. A URI is of the form:
+ * <scheme>:<authority><path>?<query>#<fragment>
+ *
+ * For simplicity, we parse the URI in the following order:
+ *
+ * 1. Fragment (anchors)
+ * 2. Query (CGI stuff)
+ * 3. Scheme ("http")
+ * 4. Authority (host name)
+ * 5. Username/Password (if any)
+ * 6. Port (server port if any)
+ * 7. Path (/homepages/mypage.html)
+ *
+ * The reason for this order is to minimize any parsing ambiguities.
+ * Fragments and queries can contain almost anything (they are parts
+ * that can contain custom data with their own syntax). Parsing
+ * them out first removes a large chance of parsing errors. This
+ * method expects well formed URI's, but performing the parse in
+ * this order makes us a little more tolerant of user error.
+ *
+ * REGEXP
+ * Why doesn't this use regular expressions to parse the URI? We
+ * have found that in a real world scenario, URI's are not always
+ * well formed. Sometimes characters that should have been escaped
+ * are not, and those situations would break a regexp pattern. This
+ * function attempts to be smart about what it is parsing based on
+ * location of characters relative to eachother. This function has
+ * been proven through real-world use to parse the vast majority
+ * of URI's correctly.
+ *
+ * NOTE
+ * It is assumed that the string in URI form is escaped. This function
+ * does not escape anything. If you constructed the URI string by
+ * hand, and used this to parse in the URI and still need it escaped,
+ * call forceEscape() on your URI object.
+ *
+ * Parsing Assumptions
+ * This routine assumes that the URI being passed is well formed.
+ * Passing things like local paths, malformed URI's, and the such
+ * will result in parsing errors. This function can handle
+ * - absolute hierarchical (e.g. "http://something.com/index.html),
+ * - relative hierarchical (e.g. "../images/flower.gif"), or
+ * - non-hierarchical URIs (e.g. "mailto:jsmith@fungoo.com").
+ *
+ * Anything else will probably result in a parsing error, or a bogus
+ * URI object.
+ *
+ * Note that non-hierarchical URIs *MUST* have a scheme, otherwise
+ * they will be mistaken for relative URI's.
+ *
+ * If you are not sure what is being passed to you (like manually
+ * entered text from UI), you can construct a blank URI object and
+ * call unknownToURI() passing in the unknown string.
+ *
+ * @return true if successful, false if there was some kind of
+ * parsing error
+ */
+ protected function parseURI(uri:String) : Boolean
+ {
+ var baseURI:String = uri;
+ var index:int, index2:int;
+
+ // Make sure this object is clean before we start. If it was used
+ // before and we are now parsing a new URI, we don't want any stale
+ // info lying around.
+ initialize();
+
+ // Remove any fragments (anchors) from the URI
+ index = baseURI.indexOf("#");
+ if (index != -1)
+ {
+ // Store the fragment piece if any
+ if (baseURI.length > (index + 1)) // +1 is to skip the '#'
+ _fragment = baseURI.substr(index + 1, baseURI.length - (index + 1));
+
+ // Trim off the fragment
+ baseURI = baseURI.substr(0, index);
+ }
+
+ // We need to strip off any CGI parameters (eg '?param=bob')
+ index = baseURI.indexOf("?");
+ if (index != -1)
+ {
+ if (baseURI.length > (index + 1))
+ _query = baseURI.substr(index + 1, baseURI.length - (index + 1)); // +1 is to skip the '?'
+
+ // Trim off the query
+ baseURI = baseURI.substr(0, index);
+ }
+
+ // Now try to find the scheme part
+ index = baseURI.search(':');
+ index2 = baseURI.search('/');
+
+ var containsColon:Boolean = (index != -1);
+ var containsSlash:Boolean = (index2 != -1);
+
+ // This value is indeterminate if "containsColon" is false.
+ // (if there is no colon, does the slash come before or
+ // after said non-existing colon?)
+ var colonBeforeSlash:Boolean = (!containsSlash || index < index2);
+
+ // If it has a colon and it's before the first slash, we will treat
+ // it as a scheme. If a slash is before a colon, there must be a
+ // stray colon in a path or something. In which case, the colon is
+ // not the separator for the scheme. Technically, we could consider
+ // this an error, but since this is not an ambiguous state (we know
+ // 100% that this has no scheme), we will keep going.
+ if (containsColon && colonBeforeSlash)
+ {
+ // We found a scheme
+ _scheme = baseURI.substr(0, index);
+
+ // Normalize the scheme
+ _scheme = _scheme.toLowerCase();
+
+ baseURI = baseURI.substr(index + 1);
+
+ if (baseURI.substr(0, 2) == "//")
+ {
+ // This is a hierarchical URI
+ _nonHierarchical = "";
+
+ // Trim off the "//"
+ baseURI = baseURI.substr(2, baseURI.length - 2);
+ }
+ else
+ {
+ // This is a non-hierarchical URI like "mailto:bob@mail.com"
+ _nonHierarchical = baseURI;
+
+ if ((_valid = validateURI()) == false)
+ initialize(); // Bad URI. Clear it.
+
+ // No more parsing to do for this case
+ return isValid();
+ }
+ }
+ else
+ {
+ // No scheme. We will consider this a relative URI
+ _scheme = "";
+ _relative = true;
+ _nonHierarchical = "";
+ }
+
+ // Ok, what we have left is everything after the <scheme>://
+
+ // Now that we have stripped off any query and fragment parts, we
+ // need to split the authority from the path
+
+ if (isRelative())
+ {
+ // Don't bother looking for the authority. It's a relative URI
+ _authority = "";
+ _port = "";
+ _path = baseURI;
+ }
+ else
+ {
+ // Check for malformed UNC style file://///server/type/path/
+ // By the time we get here, we have already trimmed the "file://"
+ // so baseURI will be ///server/type/path. If baseURI only
+ // has one slash, we leave it alone because that is valid (that
+ // is the case of "file:///path/to/file.txt" where there is no
+ // server - implicit "localhost").
+ if (baseURI.substr(0, 2) == "//")
+ {
+ // Trim all leading slashes
+ while(baseURI.charAt(0) == "/")
+ baseURI = baseURI.substr(1, baseURI.length - 1);
+ }
+
+ index = baseURI.search('/');
+ if (index == -1)
+ {
+ // No path. We must have passed something like "http://something.com"
+ _authority = baseURI;
+ _path = "";
+ }
+ else
+ {
+ _authority = baseURI.substr(0, index);
+ _path = baseURI.substr(index, baseURI.length - index);
+ }
+
+ // Check to see if the URI has any username or password information.
+ // For example: ftp://username:password@server.com
+ index = _authority.search('@');
+ if (index != -1)
+ {
+ // We have a username and possibly a password
+ _username = _authority.substr(0, index);
+
+ // Remove the username/password from the authority
+ _authority = _authority.substr(index + 1); // Skip the '@'
+
+ // Now check to see if the username also has a password
+ index = _username.search(':');
+ if (index != -1)
+ {
+ _password = _username.substring(index + 1, _username.length);
+ _username = _username.substr(0, index);
+ }
+ else
+ _password = "";
+ }
+ else
+ {
+ _username = "";
+ _password = "";
+ }
+
+ // Lastly, check to see if the authorty has a port number.
+ // This is parsed after the username/password to avoid conflicting
+ // with the ':' in the 'username:password' if one exists.
+ index = _authority.search(':');
+ if (index != -1)
+ {
+ _port = _authority.substring(index + 1, _authority.length); // skip the ':'
+ _authority = _authority.substr(0, index);
+ }
+ else
+ {
+ _port = "";
+ }
+
+ // Lastly, normalize the authority. Domain names
+ // are case insensitive.
+ _authority = _authority.toLowerCase();
+ }
+
+ if ((_valid = validateURI()) == false)
+ initialize(); // Bad URI. Clear it
+
+ return isValid();
+ }
+
+
+ /********************************************************************
+ * Copy function.
+ */
+ public function copyURI(uri:URI) : void
+ {
+ this._scheme = uri._scheme;
+ this._authority = uri._authority;
+ this._username = uri._username;
+ this._password = uri._password;
+ this._port = uri._port;
+ this._path = uri._path;
+ this._query = uri._query;
+ this._fragment = uri._fragment;
+ this._nonHierarchical = uri._nonHierarchical;
+
+ this._valid = uri._valid;
+ this._relative = uri._relative;
+ }
+
+
+ /**
+ * @private
+ * Checks if the given string only contains a-z or A-Z.
+ */
+ protected function verifyAlpha(str:String) : Boolean
+ {
+ var pattern:RegExp = /[^a-z]/;
+ var index:int;
+
+ str = str.toLowerCase();
+ index = str.search(pattern);
+
+ if (index == -1)
+ return true;
+ else
+ return false;
+ }
+
+ /**
+ * Is this a valid URI?
+ *
+ * @return true if this object represents a valid URI, false
+ * otherwise.
+ */
+ public function isValid() : Boolean
+ {
+ return this._valid;
+ }
+
+
+ /**
+ * Is this URI an absolute URI? An absolute URI is a complete, fully
+ * qualified reference to a resource. e.g. http://site.com/index.htm
+ * Non-hierarchical URI's are always absolute.
+ */
+ public function isAbsolute() : Boolean
+ {
+ return !this._relative;
+ }
+
+
+ /**
+ * Is this URI a relative URI? Relative URI's do not have a scheme
+ * and only contain a relative path with optional anchor and query
+ * parts. e.g. "../reports/index.htm". Non-hierarchical URI's
+ * will never be relative.
+ */
+ public function isRelative() : Boolean
+ {
+ return this._relative;
+ }
+
+
+ /**
+ * Does this URI point to a resource that is a directory/folder?
+ * The URI specification dictates that any path that ends in a slash
+ * is a directory. This is needed to be able to perform correct path
+ * logic when combining relative URI's with absolute URI's to
+ * obtain the correct absolute URI to a resource.
+ *
+ * @see URI.chdir
+ *
+ * @return true if this URI represents a directory resource, false
+ * if this URI represents a file resource.
+ */
+ public function isDirectory() : Boolean
+ {
+ if (_path.length == 0)
+ return false;
+
+ return (_path.charAt(path.length - 1) == '/');
+ }
+
+
+ /**
+ * Is this URI a hierarchical URI? URI's can be
+ */
+ public function isHierarchical() : Boolean
+ {
+ return hierState;
+ }
+
+
+ /**
+ * The scheme of the URI.
+ */
+ public function get scheme() : String
+ {
+ return URI.unescapeChars(_scheme);
+ }
+ public function set scheme(schemeStr:String) : void
+ {
+ // Normalize the scheme
+ var normalized:String = schemeStr.toLowerCase();
+ _scheme = URI.fastEscapeChars(normalized, URI.URIschemeExcludedBitmap);
+ }
+
+
+ /**
+ * The authority (host) of the URI. Only valid for
+ * hierarchical URI's. If the URI is relative, this will
+ * be an empty string. When setting this value, the string
+ * given is assumed to be unescaped. When retrieving this
+ * value, the resulting string is unescaped.
+ */
+ public function get authority() : String
+ {
+ return URI.unescapeChars(_authority);
+ }
+ public function set authority(authorityStr:String) : void
+ {
+ // Normalize the authority
+ authorityStr = authorityStr.toLowerCase();
+
+ _authority = URI.fastEscapeChars(authorityStr,
+ URI.URIauthorityExcludedBitmap);
+
+ // Only hierarchical URI's can have an authority, make
+ // sure this URI is of the proper format.
+ this.hierState = true;
+ }
+
+
+ /**
+ * The username of the URI. Only valid for hierarchical
+ * URI's. If the URI is relative, this will be an empty
+ * string.
+ *
+ * <p>The URI specification allows for authentication
+ * credentials to be embedded in the URI as such:</p>
+ *
+ * <p>http://user:passwd@host/path/to/file.htm</p>
+ *
+ * <p>When setting this value, the string
+ * given is assumed to be unescaped. When retrieving this
+ * value, the resulting string is unescaped.</p>
+ */
+ public function get username() : String
+ {
+ return URI.unescapeChars(_username);
+ }
+ public function set username(usernameStr:String) : void
+ {
+ _username = URI.fastEscapeChars(usernameStr, URI.URIuserpassExcludedBitmap);
+
+ // Only hierarchical URI's can have a username.
+ this.hierState = true;
+ }
+
+
+ /**
+ * The password of the URI. Similar to username.
+ * @see URI.username
+ */
+ public function get password() : String
+ {
+ return URI.unescapeChars(_password);
+ }
+ public function set password(passwordStr:String) : void
+ {
+ _password = URI.fastEscapeChars(passwordStr,
+ URI.URIuserpassExcludedBitmap);
+
+ // Only hierarchical URI's can have a password.
+ this.hierState = true;
+ }
+
+
+ /**
+ * The host port number. Only valid for hierarchical URI's. If
+ * the URI is relative, this will be an empty string. URI's can
+ * contain the port number of the remote host:
+ *
+ * <p>http://site.com:8080/index.htm</p>
+ */
+ public function get port() : String
+ {
+ return URI.unescapeChars(_port);
+ }
+ public function set port(portStr:String) : void
+ {
+ _port = URI.escapeChars(portStr);
+
+ // Only hierarchical URI's can have a port.
+ this.hierState = true;
+ }
+
+
+ /**
+ * The path portion of the URI. Only valid for hierarchical
+ * URI's. When setting this value, the string
+ * given is assumed to be unescaped. When retrieving this
+ * value, the resulting string is unescaped.
+ *
+ * <p>The path portion can be in one of two formats. 1) an absolute
+ * path, or 2) a relative path. An absolute path starts with a
+ * slash ('/'), a relative path does not.</p>
+ *
+ * <p>An absolute path may look like:</p>
+ * <listing>/full/path/to/my/file.htm</listing>
+ *
+ * <p>A relative path may look like:</p>
+ * <listing>
+ * path/to/my/file.htm
+ * ../images/logo.gif
+ * ../../reports/index.htm
+ * </listing>
+ *
+ * <p>Paths can be absolute or relative. Note that this not the same as
+ * an absolute or relative URI. An absolute URI can only have absolute
+ * paths. For example:</p>
+ *
+ * <listing>http:/site.com/path/to/file.htm</listing>
+ *
+ * <p>This absolute URI has an absolute path of "/path/to/file.htm".</p>
+ *
+ * <p>Relative URI's can have either absolute paths or relative paths.
+ * All of the following relative URI's are valid:</p>
+ *
+ * <listing>
+ * /absolute/path/to/file.htm
+ * path/to/file.htm
+ * ../path/to/file.htm
+ * </listing>
+ */
+ public function get path() : String
+ {
+ return URI.unescapeChars(_path);
+ }
+ public function set path(pathStr:String) : void
+ {
+ this._path = URI.fastEscapeChars(pathStr, URI.URIpathExcludedBitmap);
+
+ if (this._scheme == UNKNOWN_SCHEME)
+ {
+ // We set the path. This is a valid URI now.
+ this._scheme = "";
+ }
+
+ // Only hierarchical URI's can have a path.
+ hierState = true;
+ }
+
+
+ /**
+ * The query (CGI) portion of the URI. This part is valid for
+ * both hierarchical and non-hierarchical URI's.
+ *
+ * <p>This accessor should only be used if a custom query syntax
+ * is used. This URI class supports the common "param=value"
+ * style query syntax via the get/setQueryValue() and
+ * get/setQueryByMap() functions. Those functions should be used
+ * instead if the common syntax is being used.
+ *
+ * <p>The URI RFC does not specify any particular
+ * syntax for the query part of a URI. It is intended to allow
+ * any format that can be agreed upon by the two communicating hosts.
+ * However, most systems have standardized on the typical CGI
+ * format:</p>
+ *
+ * <listing>http://site.com/script.php?param1=value1¶m2=value2</listing>
+ *
+ * <p>This class has specific support for this query syntax</p>
+ *
+ * <p>This common query format is an array of name/value
+ * pairs with its own syntax that is different from the overall URI
+ * syntax. The query has its own escaping logic. For a query part
+ * to be properly escaped and unescaped, it must be split into its
+ * component parts. This accessor escapes/unescapes the entire query
+ * part without regard for it's component parts. This has the
+ * possibliity of leaving the query string in an ambiguious state in
+ * regards to its syntax. If the contents of the query part are
+ * important, it is recommended that get/setQueryValue() or
+ * get/setQueryByMap() are used instead.</p>
+ *
+ * If a different query syntax is being used, a subclass of URI
+ * can be created to handle that specific syntax.
+ *
+ * @see URI.getQueryValue, URI.getQueryByMap
+ */
+ public function get query() : String
+ {
+ return URI.unescapeChars(_query);
+ }
+ public function set query(queryStr:String) : void
+ {
+ _query = URI.fastEscapeChars(queryStr, URI.URIqueryExcludedBitmap);
+
+ // both hierarchical and non-hierarchical URI's can
+ // have a query. Do not set the hierState.
+ }
+
+ /**
+ * Accessor to the raw query data. If you are using a custom query
+ * syntax, this accessor can be used to get and set the query part
+ * directly with no escaping/unescaping. This should ONLY be used
+ * if your application logic is handling custom query logic and
+ * handling the proper escaping of the query part.
+ */
+ public function get queryRaw() : String
+ {
+ return _query;
+ }
+ public function set queryRaw(queryStr:String) : void
+ {
+ _query = queryStr;
+ }
+
+
+ /**
+ * The fragment (anchor) portion of the URI. This is valid for
+ * both hierarchical and non-hierarchical URI's.
+ */
+ public function get fragment() : String
+ {
+ return URI.unescapeChars(_fragment);
+ }
+ public function set fragment(fragmentStr:String) : void
+ {
+ _fragment = URI.fastEscapeChars(fragmentStr, URIfragmentExcludedBitmap);
+
+ // both hierarchical and non-hierarchical URI's can
+ // have a fragment. Do not set the hierState.
+ }
+
+
+ /**
+ * The non-hierarchical part of the URI. For example, if
+ * this URI object represents "mailto:somebody@company.com",
+ * this will contain "somebody@company.com". This is valid only
+ * for non-hierarchical URI's.
+ */
+ public function get nonHierarchical() : String
+ {
+ return URI.unescapeChars(_nonHierarchical);
+ }
+ public function set nonHierarchical(nonHier:String) : void
+ {
+ _nonHierarchical = URI.fastEscapeChars(nonHier, URInonHierexcludedBitmap);
+
+ // This is a non-hierarchical URI.
+ this.hierState = false;
+ }
+
+
+ /**
+ * Quick shorthand accessor to set the parts of this URI.
+ * The given parts are assumed to be in unescaped form. If
+ * the URI is non-hierarchical (e.g. mailto:) you will need
+ * to call SetScheme() and SetNonHierarchical().
+ */
+ public function setParts(schemeStr:String, authorityStr:String,
+ portStr:String, pathStr:String, queryStr:String,
+ fragmentStr:String) : void
+ {
+ this.scheme = schemeStr;
+ this.authority = authorityStr;
+ this.port = portStr;
+ this.path = pathStr;
+ this.query = queryStr;
+ this.fragment = fragmentStr;
+
+ hierState = true;
+ }
+
+
+ /**
+ * URI escapes the given character string. This is similar in function
+ * to the global encodeURIComponent() function in ActionScript, but is
+ * slightly different in regards to which characters get escaped. This
+ * escapes the characters specified in the URIbaselineExluded set (see class
+ * static members). This is needed for this class to work properly.
+ *
+ * <p>If a different set of characters need to be used for the escaping,
+ * you may use fastEscapeChars() and specify a custom URIEncodingBitmap
+ * that contains the characters your application needs escaped.</p>
+ *
+ * <p>Never pass a full URI to this function. A URI can only be properly
+ * escaped/unescaped when split into its component parts (see RFC 3986
+ * section 2.4). This is due to the fact that the URI component separators
+ * could be characters that would normally need to be escaped.</p>
+ *
+ * @param unescaped character string to be escaped.
+ *
+ * @return escaped character string
+ *
+ * @see encodeURIComponent
+ * @see fastEscapeChars
+ */
+ static public function escapeChars(unescaped:String) : String
+ {
+ // This uses the excluded set by default.
+ return fastEscapeChars(unescaped, URI.URIbaselineExcludedBitmap);
+ }
+
+
+ /**
+ * Unescape any URI escaped characters in the given character
+ * string.
+ *
+ * <p>Never pass a full URI to this function. A URI can only be properly
+ * escaped/unescaped when split into its component parts (see RFC 3986
+ * section 2.4). This is due to the fact that the URI component separators
+ * could be characters that would normally need to be escaped.</p>
+ *
+ * @param escaped the escaped string to be unescaped.
+ *
+ * @return unescaped string.
+ */
+ static public function unescapeChars(escaped:String /*, onlyHighASCII:Boolean = false*/) : String
+ {
+ // We can just use the default AS function. It seems to
+ // decode everything correctly
+ var unescaped:String;
+ unescaped = decodeURIComponent(escaped);
+ return unescaped;
+ }
+
+ /**
+ * Performance focused function that escapes the given character
+ * string using the given URIEncodingBitmap as the rule for what
+ * characters need to be escaped. This function is used by this
+ * class and can be used externally to this class to perform
+ * escaping on custom character sets.
+ *
+ * <p>Never pass a full URI to this function. A URI can only be properly
+ * escaped/unescaped when split into its component parts (see RFC 3986
+ * section 2.4). This is due to the fact that the URI component separators
+ * could be characters that would normally need to be escaped.</p>
+ *
+ * @param unescaped the unescaped string to be escaped
+ * @param bitmap the set of characters that need to be escaped
+ *
+ * @return the escaped string.
+ */
+ static public function fastEscapeChars(unescaped:String, bitmap:URIEncodingBitmap) : String
+ {
+ var escaped:String = "";
+ var c:String;
+ var x:int, i:int;
+
+ for (i = 0; i < unescaped.length; i++)
+ {
+ c = unescaped.charAt(i);
+
+ x = bitmap.ShouldEscape(c);
+ if (x)
+ {
+ c = x.toString(16);
+ if (c.length == 1)
+ c = "0" + c;
+
+ c = "%" + c;
+ c = c.toUpperCase();
+ }
+
+ escaped += c;
+ }
+
+ return escaped;
+ }
+
+
+ /**
+ * Is this URI of a particular scheme type? For example,
+ * passing "http" to a URI object that represents the URI
+ * "http://site.com/" would return true.
+ *
+ * @param scheme scheme to check for
+ *
+ * @return true if this URI object is of the given type, false
+ * otherwise.
+ */
+ public function isOfType(scheme:String) : Boolean
+ {
+ // Schemes are never case sensitive. Ignore case.
+ scheme = scheme.toLowerCase();
+ return (this._scheme == scheme);
+ }
+
+
+ /**
+ * Get the value for the specified named in the query part. This
+ * assumes the query part of the URI is in the common
+ * "name1=value1&name2=value2" syntax. Do not call this function
+ * if you are using a custom query syntax.
+ *
+ * @param name name of the query value to get.
+ *
+ * @return the value of the query name, empty string if the
+ * query name does not exist.
+ */
+ public function getQueryValue(name:String) : String
+ {
+ var map:Object;
+ var item:String;
+ var value:String;
+
+ map = getQueryByMap();
+
+ for (item in map)
+ {
+ if (item == name)
+ {
+ value = map[item];
+ return value;
+ }
+ }
+
+ // Didn't find the specified key
+ return new String("");
+ }
+
+
+ /**
+ * Set the given value on the given query name. If the given name
+ * does not exist, it will automatically add this name/value pair
+ * to the query. If null is passed as the value, it will remove
+ * the given item from the query.
+ *
+ * <p>This automatically escapes any characters that may conflict with
+ * the query syntax so that they are "safe" within the query. The
+ * strings passed are assumed to be literal unescaped name and value.</p>
+ *
+ * @param name name of the query value to set
+ * @param value value of the query item to set. If null, this will
+ * force the removal of this item from the query.
+ */
+ public function setQueryValue(name:String, value:String) : void
+ {
+ var map:Object;
+
+ map = getQueryByMap();
+
+ // If the key doesn't exist yet, this will create a new pair in
+ // the map. If it does exist, this will overwrite the previous
+ // value, which is what we want.
+ map[name] = value;
+
+ setQueryByMap(map);
+ }
+
+
+ /**
+ * Get the query of the URI in an Object class that allows for easy
+ * access to the query data via Object accessors. For example:
+ *
+ * <listing>
+ * var query:Object = uri.getQueryByMap();
+ * var value:String = query["param"]; // get a value
+ * query["param2"] = "foo"; // set a new value
+ * </listing>
+ *
+ * @return Object that contains the name/value pairs of the query.
+ *
+ * @see #setQueryByMap
+ * @see #getQueryValue
+ * @see #setQueryValue
+ */
+ public function getQueryByMap() : Object
+ {
+ var queryStr:String;
+ var pair:String;
+ var pairs:Array;
+ var item:Array;
+ var name:String, value:String;
+ var index:int;
+ var map:Object = new Object();
+
+
+ // We need the raw query string, no unescaping.
+ queryStr = this._query;
+
+ pairs = queryStr.split('&');
+ for each (pair in pairs)
+ {
+ if (pair.length == 0)
+ continue;
+
+ item = pair.split('=');
+
+ if (item.length > 0)
+ name = item[0];
+ else
+ continue; // empty array
+
+ if (item.length > 1)
+ value = item[1];
+ else
+ value = "";
+
+ name = queryPartUnescape(name);
+ value = queryPartUnescape(value);
+
+ map[name] = value;
+ }
+
+ return map;
+ }
+
+
+ /**
+ * Set the query part of this URI using the given object as the
+ * content source. Any member of the object that has a value of
+ * null will not be in the resulting query.
+ *
+ * @param map object that contains the name/value pairs as
+ * members of that object.
+ *
+ * @see #getQueryByMap
+ * @see #getQueryValue
+ * @see #setQueryValue
+ */
+ public function setQueryByMap(map:Object) : void
+ {
+ var item:String;
+ var name:String, value:String;
+ var queryStr:String = "";
+ var tmpPair:String;
+ var foo:String;
+
+ for (item in map)
+ {
+ name = item;
+ value = map[item];
+
+ if (value == null)
+ value = "";
+
+ // Need to escape the name/value pair so that they
+ // don't conflict with the query syntax (specifically
+ // '=', '&', and <whitespace>).
+ name = queryPartEscape(name);
+ value = queryPartEscape(value);
+
+ tmpPair = name;
+
+ if (value.length > 0)
+ {
+ tmpPair += "=";
+ tmpPair += value;
+ }
+
+ if (queryStr.length != 0)
+ queryStr += '&'; // Add the separator
+
+ queryStr += tmpPair;
+ }
+
+ // We don't want to escape. We already escaped the
+ // individual name/value pairs. If we escaped the
+ // query string again by assigning it to "query",
+ // we would have double escaping.
+ _query = queryStr;
+ }
+
+
+ /**
+ * Similar to Escape(), except this also escapes characters that
+ * would conflict with the name/value pair query syntax. This is
+ * intended to be called on each individual "name" and "value"
+ * in the query making sure that nothing in the name or value
+ * strings contain characters that would conflict with the query
+ * syntax (e.g. '=' and '&').
+ *
+ * @param unescaped unescaped string that is to be escaped.
+ *
+ * @return escaped string.
+ *
+ * @see #queryUnescape
+ */
+ static public function queryPartEscape(unescaped:String) : String
+ {
+ var escaped:String = unescaped;
+ escaped = URI.fastEscapeChars(unescaped, URI.URIqueryPartExcludedBitmap);
+ return escaped;
+ }
+
+
+ /**
+ * Unescape the individual name/value string pairs.
+ *
+ * @param escaped escaped string to be unescaped
+ *
+ * @return unescaped string
+ *
+ * @see #queryEscape
+ */
+ static public function queryPartUnescape(escaped:String) : String
+ {
+ var unescaped:String = escaped;
+ unescaped = unescapeChars(unescaped);
+ return unescaped;
+ }
+
+ /**
+ * Output this URI as a string. The resulting string is properly
+ * escaped and well formed for machine processing.
+ */
+ public function toString() : String
+ {
+ if (this == null)
+ return "";
+ else
+ return toStringInternal(false);
+ }
+
+ /**
+ * Output the URI as a string that is easily readable by a human.
+ * This outputs the URI with all escape sequences unescaped to
+ * their character representation. This makes the URI easier for
+ * a human to read, but the URI could be completely invalid
+ * because some unescaped characters may now cause ambiguous parsing.
+ * This function should only be used if you want to display a URI to
+ * a user. This function should never be used outside that specific
+ * case.
+ *
+ * @return the URI in string format with all escape sequences
+ * unescaped.
+ *
+ * @see #toString
+ */
+ public function toDisplayString() : String
+ {
+ return toStringInternal(true);
+ }
+
+
+ /**
+ * @private
+ *
+ * The guts of toString()
+ */
+ protected function toStringInternal(forDisplay:Boolean) : String
+ {
+ var uri:String = "";
+ var part:String = "";
+
+ if (isHierarchical() == false)
+ {
+ // non-hierarchical URI
+
+ uri += (forDisplay ? this.scheme : _scheme);
+ uri += ":";
+ uri += (forDisplay ? this.nonHierarchical : _nonHierarchical);
+ }
+ else
+ {
+ // Hierarchical URI
+
+ if (isRelative() == false)
+ {
+ // If it is not a relative URI, then we want the scheme and
+ // authority parts in the string. If it is relative, we
+ // do NOT want this stuff.
+
+ if (_scheme.length != 0)
+ {
+ part = (forDisplay ? this.scheme : _scheme);
+ uri += part + ":";
+ }
+
+ if (_authority.length != 0 || isOfType("file"))
+ {
+ uri += "//";
+
+ // Add on any username/password associated with this
+ // authority
+ if (_username.length != 0)
+ {
+ part = (forDisplay ? this.username : _username);
+ uri += part;
+
+ if (_password.length != 0)
+ {
+ part = (forDisplay ? this.password : _password);
+ uri += ":" + part;
+ }
+
+ uri += "@";
+ }
+
+ // add the authority
+ part = (forDisplay ? this.authority : _authority);
+ uri += part;
+
+ // Tack on the port number, if any
+ if (port.length != 0)
+ uri += ":" + port;
+ }
+ }
+
+ // Tack on the path
+ part = (forDisplay ? this.path : _path);
+ uri += part;
+
+ } // end hierarchical part
+
+ // Both non-hier and hierarchical have query and fragment parts
+
+ // Add on the query and fragment parts
+ if (_query.length != 0)
+ {
+ part = (forDisplay ? this.query : _query);
+ uri += "?" + part;
+ }
+
+ if (fragment.length != 0)
+ {
+ part = (forDisplay ? this.fragment : _fragment);
+ uri += "#" + part;
+ }
+
+ return uri;
+ }
+
+ /**
+ * Forcefully ensure that this URI is properly escaped.
+ *
+ * <p>Sometimes URI's are constructed by hand using strings outside
+ * this class. In those cases, it is unlikely the URI has been
+ * properly escaped. This function forcefully escapes this URI
+ * by unescaping each part and then re-escaping it. If the URI
+ * did not have any escaping, the first unescape will do nothing
+ * and then the re-escape will properly escape everything. If
+ * the URI was already escaped, the unescape and re-escape will
+ * essentally be a no-op. This provides a safe way to make sure
+ * a URI is in the proper escaped form.</p>
+ */
+ public function forceEscape() : void
+ {
+ // The accessors for each of the members will unescape
+ // and then re-escape as we get and assign them.
+
+ // Handle the parts that are common for both hierarchical
+ // and non-hierarchical URI's
+ this.scheme = this.scheme;
+ this.setQueryByMap(this.getQueryByMap());
+ this.fragment = this.fragment;
+
+ if (isHierarchical())
+ {
+ this.authority = this.authority;
+ this.path = this.path;
+ this.port = this.port;
+ this.username = this.username;
+ this.password = this.password;
+ }
+ else
+ {
+ this.nonHierarchical = this.nonHierarchical;
+ }
+ }
+
+
+ /**
+ * Does this URI point to a resource of the given file type?
+ * Given a file extension (or just a file name, this will strip the
+ * extension), check to see if this URI points to a file of that
+ * type.
+ *
+ * @param extension string that contains a file extension with or
+ * without a dot ("html" and ".html" are both valid), or a file
+ * name with an extension (e.g. "index.html").
+ *
+ * @return true if this URI points to a resource with the same file
+ * file extension as the extension provided, false otherwise.
+ */
+ public function isOfFileType(extension:String) : Boolean
+ {
+ var thisExtension:String;
+ var index:int;
+
+ index = extension.lastIndexOf(".");
+ if (index != -1)
+ {
+ // Strip the extension
+ extension = extension.substr(index + 1);
+ }
+ else
+ {
+ // The caller passed something without a dot in it. We
+ // will assume that it is just a plain extension (e.g. "html").
+ // What they passed is exactly what we want
+ }
+
+ thisExtension = getExtension(true);
+
+ if (thisExtension == "")
+ return false;
+
+ // Compare the extensions ignoring case
+ if (compareStr(thisExtension, extension, false) == 0)
+ return true;
+ else
+ return false;
+ }
+
+
+ /**
+ * Get the ".xyz" file extension from the filename in the URI.
+ * For example, if we have the following URI:
+ *
+ * <listing>http://something.com/path/to/my/page.html?form=yes&name=bob#anchor</listing>
+ *
+ * <p>This will return ".html".</p>
+ *
+ * @param minusDot If true, this will strip the dot from the extension.
+ * If true, the above example would have returned "html".
+ *
+ * @return the file extension
+ */
+ public function getExtension(minusDot:Boolean = false) : String
+ {
+ var filename:String = getFilename();
+ var extension:String;
+ var index:int;
+
+ if (filename == "")
+ return String("");
+
+ index = filename.lastIndexOf(".");
+
+ // If it doesn't have an extension, or if it is a "hidden" file,
+ // it doesn't have an extension. Hidden files on unix start with
+ // a dot (e.g. ".login").
+ if (index == -1 || index == 0)
+ return String("");
+
+ extension = filename.substr(index);
+
+ // If the caller does not want the dot, remove it.
+ if (minusDot && extension.charAt(0) == ".")
+ extension = extension.substr(1);
+
+ return extension;
+ }
+
+ /**
+ * Quick function to retrieve the file name off the end of a URI.
+ *
+ * <p>For example, if the URI is:</p>
+ * <listing>http://something.com/some/path/to/my/file.html</listing>
+ * <p>this function will return "file.html".</p>
+ *
+ * @param minusExtension true if the file extension should be stripped
+ *
+ * @return the file name. If this URI is a directory, the return
+ * value will be empty string.
+ */
+ public function getFilename(minusExtension:Boolean = false) : String
+ {
+ if (isDirectory())
+ return String("");
+
+ var pathStr:String = this.path;
+ var filename:String;
+ var index:int;
+
+ // Find the last path separator.
+ index = pathStr.lastIndexOf("/");
+
+ if (index != -1)
+ filename = pathStr.substr(index + 1);
+ else
+ filename = pathStr;
+
+ if (minusExtension)
+ {
+ // The caller has requested that the extension be removed
+ index = filename.lastIndexOf(".");
+
+ if (index != -1)
+ filename = filename.substr(0, index);
+ }
+
+ return filename;
+ }
+
+
+ /**
+ * @private
+ * Helper function to compare strings.
+ *
+ * @return true if the two strings are identical, false otherwise.
+ */
+ static protected function compareStr(str1:String, str2:String,
+ sensitive:Boolean = true) : Boolean
+ {
+ if (sensitive == false)
+ {
+ str1 = str1.toLowerCase();
+ str2 = str2.toLowerCase();
+ }
+
+ return (str1 == str2)
+ }
+
+ /**
+ * Based on the type of this URI (http, ftp, etc.) get
+ * the default port used for that protocol. This is
+ * just intended to be a helper function for the most
+ * common cases.
+ */
+ public function getDefaultPort() : String
+ {
+ if (_scheme == "http")
+ return String("80");
+ else if (_scheme == "ftp")
+ return String("21");
+ else if (_scheme == "file")
+ return String("");
+ else if (_scheme == "sftp")
+ return String("22"); // ssh standard port
+ else
+ {
+ // Don't know the port for this URI type
+ return String("");
+ }
+ }
+
+ /**
+ * @private
+ *
+ * This resolves the given URI if the application has a
+ * resolver interface defined. This function does not
+ * modify the passed in URI and returns a new URI.
+ */
+ static protected function resolve(uri:URI) : URI
+ {
+ var copy:URI = new URI();
+ copy.copyURI(uri);
+
+ if (_resolver != null)
+ {
+ // A resolver class has been registered. Call it.
+ return _resolver.resolve(copy);
+ }
+ else
+ {
+ // No resolver. Nothing to do, but we don't
+ // want to reuse the one passed in.
+ return copy;
+ }
+ }
+
+ /**
+ * Accessor to set and get the resolver object used by all URI
+ * objects to dynamically resolve URI's before comparison.
+ */
+ static public function set resolver(resolver:IURIResolver) : void
+ {
+ _resolver = resolver;
+ }
+ static public function get resolver() : IURIResolver
+ {
+ return _resolver;
+ }
+
+ /**
+ * Given another URI, return this URI object's relation to the one given.
+ * URI's can have 1 of 4 possible relationships. They can be unrelated,
+ * equal, parent, or a child of the given URI.
+ *
+ * @param uri URI to compare this URI object to.
+ * @param caseSensitive true if the URI comparison should be done
+ * taking case into account, false if the comparison should be
+ * performed case insensitive.
+ *
+ * @return URI.NOT_RELATED, URI.CHILD, URI.PARENT, or URI.EQUAL
+ */
+ public function getRelation(uri:URI, caseSensitive:Boolean = true) : int
+ {
+ // Give the app a chance to resolve these URI's before we compare them.
+ var thisURI:URI = URI.resolve(this);
+ var thatURI:URI = URI.resolve(uri);
+
+ if (thisURI.isRelative() || thatURI.isRelative())
+ {
+ // You cannot compare relative URI's due to their lack of context.
+ // You could have two relative URI's that look like:
+ // ../../images/
+ // ../../images/marketing/logo.gif
+ // These may appear related, but you have no overall context
+ // from which to make the comparison. The first URI could be
+ // from one site and the other URI could be from another site.
+ return URI.NOT_RELATED;
+ }
+ else if (thisURI.isHierarchical() == false || thatURI.isHierarchical() == false)
+ {
+ // One or both of the URI's are non-hierarchical.
+ if (((thisURI.isHierarchical() == false) && (thatURI.isHierarchical() == true)) ||
+ ((thisURI.isHierarchical() == true) && (thatURI.isHierarchical() == false)))
+ {
+ // XOR. One is hierarchical and the other is
+ // non-hierarchical. They cannot be compared.
+ return URI.NOT_RELATED;
+ }
+ else
+ {
+ // They are both non-hierarchical
+ if (thisURI.scheme != thatURI.scheme)
+ return URI.NOT_RELATED;
+
+ if (thisURI.nonHierarchical != thatURI.nonHierarchical)
+ return URI.NOT_RELATED;
+
+ // The two non-hierarcical URI's are equal.
+ return URI.EQUAL;
+ }
+ }
+
+ // Ok, this URI and the one we are being compared to are both
+ // absolute hierarchical URI's.
+
+ if (thisURI.scheme != thatURI.scheme)
+ return URI.NOT_RELATED;
+
+ if (thisURI.authority != thatURI.authority)
+ return URI.NOT_RELATED;
+
+ var thisPort:String = thisURI.port;
+ var thatPort:String = thatURI.port;
+
+ // Different ports are considered completely different servers.
+ if (thisPort == "")
+ thisPort = thisURI.getDefaultPort();
+ if (thatPort == "")
+ thatPort = thatURI.getDefaultPort();
+
+ // Check to see if the port is the default port.
+ if (thisPort != thatPort)
+ return URI.NOT_RELATED;
+
+ if (compareStr(thisURI.path, thatURI.path, caseSensitive))
+ return URI.EQUAL;
+
+ // Special case check. If we are here, the scheme, authority,
+ // and port match, and it is not a relative path, but the
+ // paths did not match. There is a special case where we
+ // could have:
+ // http://something.com/
+ // http://something.com
+ // Technically, these are equal. So lets, check for this case.
+ var thisPath:String = thisURI.path;
+ var thatPath:String = thatURI.path;
+
+ if ( (thisPath == "/" || thatPath == "/") &&
+ (thisPath == "" || thatPath == "") )
+ {
+ // We hit the special case. These two are equal.
+ return URI.EQUAL;
+ }
+
+ // Ok, the paths do not match, but one path may be a parent/child
+ // of the other. For example, we may have:
+ // http://something.com/path/to/homepage/
+ // http://something.com/path/to/homepage/images/logo.gif
+ // In this case, the first is a parent of the second (or the second
+ // is a child of the first, depending on which you compare to the
+ // other). To make this comparison, we must split the path into
+ // its component parts (split the string on the '/' path delimiter).
+ // We then compare the
+ var thisParts:Array, thatParts:Array;
+ var thisPart:String, thatPart:String;
+ var i:int;
+
+ thisParts = thisPath.split("/");
+ thatParts = thatPath.split("/");
+
+ if (thisParts.length > thatParts.length)
+ {
+ thatPart = thatParts[thatParts.length - 1];
+ if (thatPart.length > 0)
+ {
+ // if the last part is not empty, the passed URI is
+ // not a directory. There is no way the passed URI
+ // can be a parent.
+ return URI.NOT_RELATED;
+ }
+ else
+ {
+ // Remove the empty trailing part
+ thatParts.pop();
+ }
+
+ // This may be a child of the one passed in
+ for (i = 0; i < thatParts.length; i++)
+ {
+ thisPart = thisParts[i];
+ thatPart = thatParts[i];
+
+ if (compareStr(thisPart, thatPart, caseSensitive) == false)
+ return URI.NOT_RELATED;
+ }
+
+ return URI.CHILD;
+ }
+ else if (thisParts.length < thatParts.length)
+ {
+ thisPart = thisParts[thisParts.length - 1];
+ if (thisPart.length > 0)
+ {
+ // if the last part is not empty, this URI is not a
+ // directory. There is no way this object can be
+ // a parent.
+ return URI.NOT_RELATED;
+ }
+ else
+ {
+ // Remove the empty trailing part
+ thisParts.pop();
+ }
+
+ // This may be the parent of the one passed in
+ for (i = 0; i < thisParts.length; i++)
+ {
+ thisPart = thisParts[i];
+ thatPart = thatParts[i];
+
+ if (compareStr(thisPart, thatPart, caseSensitive) == false)
+ return URI.NOT_RELATED;
+ }
+
+ return URI.PARENT;
+ }
+ else
+ {
+ // Both URI's have the same number of path components, but
+ // it failed the equivelence check above. This means that
+ // the two URI's are not related.
+ return URI.NOT_RELATED;
+ }
+
+ // If we got here, the scheme and authority are the same,
+ // but the paths pointed to two different locations that
+ // were in different parts of the file system tree
+ return URI.NOT_RELATED;
+ }
+
+ /**
+ * Given another URI, return the common parent between this one
+ * and the provided URI.
+ *
+ * @param uri the other URI from which to find a common parent
+ * @para caseSensitive true if this operation should be done
+ * with case sensitive comparisons.
+ *
+ * @return the parent URI if successful, null otherwise.
+ */
+ public function getCommonParent(uri:URI, caseSensitive:Boolean = true) : URI
+ {
+ var thisURI:URI = URI.resolve(this);
+ var thatURI:URI = URI.resolve(uri);
+
+ if(!thisURI.isAbsolute() || !thatURI.isAbsolute() ||
+ thisURI.isHierarchical() == false ||
+ thatURI.isHierarchical() == false)
+ {
+ // Both URI's must be absolute hierarchical for this to
+ // make sense.
+ return null;
+ }
+
+ var relation:int = thisURI.getRelation(thatURI);
+ if (relation == URI.NOT_RELATED)
+ {
+ // The given URI is not related to this one. No
+ // common parent.
+ return null;
+ }
+
+ thisURI.chdir(".");
+ thatURI.chdir(".");
+
+ var strBefore:String, strAfter:String;
+ do
+ {
+ relation = thisURI.getRelation(thatURI, caseSensitive);
+ if(relation == URI.EQUAL || relation == URI.PARENT)
+ break;
+
+ // If strBefore and strAfter end up being the same,
+ // we know we are at the root of the path because
+ // chdir("..") is doing nothing.
+ strBefore = thisURI.toString();
+ thisURI.chdir("..");
+ strAfter = thisURI.toString();
+ }
+ while(strBefore != strAfter);
+
+ return thisURI;
+ }
+
+
+ /**
+ * This function is used to move around in a URI in a way similar
+ * to the 'cd' or 'chdir' commands on Unix. These operations are
+ * completely string based, using the context of the URI to
+ * determine the position within the path. The heuristics used
+ * to determine the action are based off Appendix C in RFC 2396.
+ *
+ * <p>URI paths that end in '/' are considered paths that point to
+ * directories, while paths that do not end in '/' are files. For
+ * example, if you execute chdir("d") on the following URI's:<br/>
+ * 1. http://something.com/a/b/c/ (directory)<br/>
+ * 2. http://something.com/a/b/c (not directory)<br/>
+ * you will get:<br/>
+ * 1. http://something.com/a/b/c/d<br/>
+ * 2. http://something.com/a/b/d<br/></p>
+ *
+ * <p>See RFC 2396, Appendix C for more info.</p>
+ *
+ * @param reference the URI or path to "cd" to.
+ * @param escape true if the passed reference string should be URI
+ * escaped before using it.
+ *
+ * @return true if the chdir was successful, false otherwise.
+ */
+ public function chdir(reference:String, escape:Boolean = false) : Boolean
+ {
+ var uriReference:URI;
+ var ref:String = reference;
+
+ if (escape)
+ ref = URI.escapeChars(reference);
+
+ if (ref == "")
+ {
+ // NOOP
+ return true;
+ }
+ else if (ref.substr(0, 2) == "//")
+ {
+ // Special case. This is an absolute URI but without the scheme.
+ // Take the scheme from this URI and tack it on. This is
+ // intended to make working with chdir() a little more
+ // tolerant.
+ var final:String = this.scheme + ":" + ref;
+
+ return constructURI(final);
+ }
+ else if (ref.charAt(0) == "?")
+ {
+ // A relative URI that is just a query part is essentially
+ // a "./?query". We tack on the "./" here to make the rest
+ // of our logic work.
+ ref = "./" + ref;
+ }
+
+ // Parse the reference passed in as a URI. This way we
+ // get any query and fragments parsed out as well.
+ uriReference = new URI(ref);
+
+ if (uriReference.isAbsolute() ||
+ uriReference.isHierarchical() == false)
+ {
+ // If the URI given is a full URI, it replaces this one.
+ copyURI(uriReference);
+ return true;
+ }
+
+
+ var thisPath:String, thatPath:String;
+ var thisParts:Array, thatParts:Array;
+ var thisIsDir:Boolean = false, thatIsDir:Boolean = false;
+ var thisIsAbs:Boolean = false, thatIsAbs:Boolean = false;
+ var lastIsDotOperation:Boolean = false;
+ var curDir:String;
+ var i:int;
+
+ thisPath = this.path;
+ thatPath = uriReference.path;
+
+ if (thisPath.length > 0)
+ thisParts = thisPath.split("/");
+ else
+ thisParts = new Array();
+
+ if (thatPath.length > 0)
+ thatParts = thatPath.split("/");
+ else
+ thatParts = new Array();
+
+ if (thisParts.length > 0 && thisParts[0] == "")
+ {
+ thisIsAbs = true;
+ thisParts.shift(); // pop the first one off the array
+ }
+ if (thisParts.length > 0 && thisParts[thisParts.length - 1] == "")
+ {
+ thisIsDir = true;
+ thisParts.pop(); // pop the last one off the array
+ }
+
+ if (thatParts.length > 0 && thatParts[0] == "")
+ {
+ thatIsAbs = true;
+ thatParts.shift(); // pop the first one off the array
+ }
+ if (thatParts.length > 0 && thatParts[thatParts.length - 1] == "")
+ {
+ thatIsDir = true;
+ thatParts.pop(); // pop the last one off the array
+ }
+
+ if (thatIsAbs)
+ {
+ // The reference is an absolute path (starts with a slash).
+ // It replaces this path wholesale.
+ this.path = uriReference.path;
+
+ // And it inherits the query and fragment
+ this.queryRaw = uriReference.queryRaw;
+ this.fragment = uriReference.fragment;
+
+ return true;
+ }
+ else if (thatParts.length == 0 && uriReference.query == "")
+ {
+ // The reference must have only been a fragment. Fragments just
+ // get appended to whatever the current path is. We don't want
+ // to overwrite any query that may already exist, so this case
+ // only takes on the new fragment.
+ this.fragment = uriReference.fragment;
+ return true;
+ }
+ else if (thisIsDir == false && thisParts.length > 0)
+ {
+ // This path ends in a file. It goes away no matter what.
+ thisParts.pop();
+ }
+
+ // By default, this assumes the query and fragment of the reference
+ this.queryRaw = uriReference.queryRaw;
+ this.fragment = uriReference.fragment;
+
+ // Append the parts of the path from the passed in reference
+ // to this object's path.
+ thisParts = thisParts.concat(thatParts);
+
+ for(i = 0; i < thisParts.length; i++)
+ {
+ curDir = thisParts[i];
+ lastIsDotOperation = false;
+
+ if (curDir == ".")
+ {
+ thisParts.splice(i, 1);
+ i = i - 1; // account for removing this item
+ lastIsDotOperation = true;
+ }
+ else if (curDir == "..")
+ {
+ if (i >= 1)
+ {
+ if (thisParts[i - 1] == "..")
+ {
+ // If the previous is a "..", we must have skipped
+ // it due to this URI being relative. We can't
+ // collapse leading ".."s in a relative URI, so
+ // do nothing.
+ }
+ else
+ {
+ thisParts.splice(i - 1, 2);
+ i = i - 2; // move back to account for the 2 we removed
+ }
+ }
+ else
+ {
+ // This is the first thing in the path.
+
+ if (isRelative())
+ {
+ // We can't collapse leading ".."s in a relative
+ // path. Do noting.
+ }
+ else
+ {
+ // This is an abnormal case. We have dot-dotted up
+ // past the base of our "file system". This is a
+ // case where we had a /path/like/this.htm and were
+ // given a path to chdir to like this:
+ // ../../../../../../mydir
+ // Obviously, it has too many ".." and will take us
+ // up beyond the top of the URI. However, according
+ // RFC 2396 Appendix C.2, we should try to handle
+ // these abnormal cases appropriately. In this case,
+ // we will do what UNIX command lines do if you are
+ // at the root (/) of the filesystem and execute:
+ // # cd ../../../../../bin
+ // Which will put you in /bin. Essentially, the extra
+ // ".."'s will just get eaten.
+
+ thisParts.splice(i, 1);
+ i = i - 1; // account for the ".." we just removed
+ }
+ }
+
+ lastIsDotOperation = true;
+ }
+ }
+
+ var finalPath:String = "";
+
+ // If the last thing in the path was a "." or "..", then this thing is a
+ // directory. If the last thing isn't a dot-op, then we don't want to
+ // blow away any information about the directory (hence the "|=" binary
+ // assignment).
+ thatIsDir = thatIsDir || lastIsDotOperation;
+
+ // Reconstruct the path with the abs/dir info we have
+ finalPath = joinPath(thisParts, thisIsAbs, thatIsDir);
+
+ // Set the path (automatically escaping it)
+ this.path = finalPath;
+
+ return true;
+ }
+
+ /**
+ * @private
+ * Join an array of path parts back into a URI style path string.
+ * This is used by the various path logic functions to recombine
+ * a path. This is different than the standard Array.join()
+ * function because we need to take into account the starting and
+ * ending path delimiters if this is an absolute path or a
+ * directory.
+ *
+ * @param parts the Array that contains strings of each path part.
+ * @param isAbs true if the given path is absolute
+ * @param isDir true if the given path is a directory
+ *
+ * @return the combined path string.
+ */
+ protected function joinPath(parts:Array, isAbs:Boolean, isDir:Boolean) : String
+ {
+ var pathStr:String = "";
+ var i:int;
+
+ for (i = 0; i < parts.length; i++)
+ {
+ if (pathStr.length > 0)
+ pathStr += "/";
+
+ pathStr += parts[i];
+ }
+
+ // If this path is a directory, tack on the directory delimiter,
+ // but only if the path contains something. Adding this to an
+ // empty path would make it "/", which is an absolute path that
+ // starts at the root.
+ if (isDir && pathStr.length > 0)
+ pathStr += "/";
+
+ if (isAbs)
+ pathStr = "/" + pathStr;
+
+ return pathStr;
+ }
+
+ /**
+ * Given an absolute URI, make this relative URI absolute using
+ * the given URI as a base. This URI instance must be relative
+ * and the base_uri must be absolute.
+ *
+ * @param base_uri URI to use as the base from which to make
+ * this relative URI into an absolute URI.
+ *
+ * @return true if successful, false otherwise.
+ */
+ public function makeAbsoluteURI(base_uri:URI) : Boolean
+ {
+ if (isAbsolute() || base_uri.isRelative())
+ {
+ // This URI needs to be relative, and the base needs to be
+ // absolute otherwise we won't know what to do!
+ return false;
+ }
+
+ // Make a copy of the base URI. We don't want to modify
+ // the passed URI.
+ var base:URI = new URI();
+ base.copyURI(base_uri);
+
+ // ChDir on the base URI. This will preserve any query
+ // and fragment we have.
+ if (base.chdir(toString()) == false)
+ return false;
+
+ // It worked, so copy the base into this one
+ copyURI(base);
+
+ return true;
+ }
+
+
+ /**
+ * Given a URI to use as a base from which this object should be
+ * relative to, convert this object into a relative URI. For example,
+ * if you have:
+ *
+ * <listing>
+ * var uri1:URI = new URI("http://something.com/path/to/some/file.html");
+ * var uri2:URI = new URI("http://something.com/path/to/another/file.html");
+ *
+ * uri1.MakeRelativePath(uri2);</listing>
+ *
+ * <p>uri1 will have a final value of "../some/file.html"</p>
+ *
+ * <p>Note! This function is brute force. If you have two URI's
+ * that are completely unrelated, this will still attempt to make
+ * the relative URI. In that case, you will most likely get a
+ * relative path that looks something like:</p>
+ *
+ * <p>../../../../../../some/path/to/my/file.html</p>
+ *
+ * @param base_uri the URI from which to make this URI relative
+ *
+ * @return true if successful, false if the base_uri and this URI
+ * are not related, of if error.
+ */
+ public function makeRelativeURI(base_uri:URI, caseSensitive:Boolean = true) : Boolean
+ {
+ var base:URI = new URI();
+ base.copyURI(base_uri);
+
+ var thisParts:Array, thatParts:Array;
+ var finalParts:Array = new Array();
+ var thisPart:String, thatPart:String, finalPath:String;
+ var pathStr:String = this.path;
+ var queryStr:String = this.queryRaw;
+ var fragmentStr:String = this.fragment;
+ var i:int;
+ var diff:Boolean = false;
+ var isDir:Boolean = false;
+
+ if (isRelative())
+ {
+ // We're already relative.
+ return true;
+ }
+
+ if (base.isRelative())
+ {
+ // The base is relative. A relative base doesn't make sense.
+ return false;
+ }
+
+
+ if ( (isOfType(base_uri.scheme) == false) ||
+ (this.authority != base_uri.authority) )
+ {
+ // The schemes and/or authorities are different. We can't
+ // make a relative path to something that is completely
+ // unrelated.
+ return false;
+ }
+
+ // Record the state of this URI
+ isDir = isDirectory();
+
+ // We are based of the directory of the given URI. We need to
+ // make sure the URI is pointing to a directory. Changing
+ // directory to "." will remove any file name if the base is
+ // not a directory.
+ base.chdir(".");
+
+ thisParts = pathStr.split("/");
+ thatParts = base.path.split("/");
+
+ if (thisParts.length > 0 && thisParts[0] == "")
+ thisParts.shift();
+
+ if (thisParts.length > 0 && thisParts[thisParts.length - 1] == "")
+ {
+ isDir = true;
+ thisParts.pop();
+ }
+
+ if (thatParts.length > 0 && thatParts[0] == "")
+ thatParts.shift();
+ if (thatParts.length > 0 && thatParts[thatParts.length - 1] == "")
+ thatParts.pop();
+
+
+ // Now that we have the paths split into an array of directories,
+ // we can compare the two paths. We start from the left of side
+ // of the path and start comparing. When we either run out of
+ // directories (one path is longer than the other), or we find
+ // a directory that is different, we stop. The remaining parts
+ // of each path is then used to determine the relative path. For
+ // example, lets say we have:
+ // path we want to make relative: /a/b/c/d/e.txt
+ // path to use as base for relative: /a/b/f/
+ //
+ // This loop will start at the left, and remove directories
+ // until we get a mismatch or run off the end of one of them.
+ // In this example, the result will be:
+ // c/d/e.txt
+ // f
+ //
+ // For every part left over in the base path, we prepend a ".."
+ // to the relative to get the final path:
+ // ../c/d/e.txt
+ while(thatParts.length > 0)
+ {
+ if (thisParts.length == 0)
+ {
+ // we matched all there is to match, we are done.
+ // This is the case where "this" object is a parent
+ // path of the given URI. eg:
+ // this.path = /a/b/ (thisParts)
+ // base.path = /a/b/c/d/e/ (thatParts)
+ break;
+ }
+
+ thisPart = thisParts[0];
+ thatPart = thatParts[0];
+
+ if (compareStr(thisPart, thatPart, caseSensitive))
+ {
+ thisParts.shift();
+ thatParts.shift();
+ }
+ else
+ break;
+ }
+
+ // If there are any path info left from the base URI, that means
+ // **this** object is above the given URI in the file tree. For
+ // each part left over in the given URI, we need to move up one
+ // directory to get where we are.
+ var dotdot:String = "..";
+ for (i = 0; i < thatParts.length; i++)
+ {
+ finalParts.push(dotdot);
+ }
+
+ // Append the parts of this URI to any dot-dot's we have
+ finalParts = finalParts.concat(thisParts);
+
+ // Join the parts back into a path
+ finalPath = joinPath(finalParts, false /* not absolute */, isDir);
+
+ if (finalPath.length == 0)
+ {
+ // The two URI's are exactly the same. The proper relative
+ // path is:
+ finalPath = "./";
+ }
+
+ // Set the parts of the URI, preserving the original query and
+ // fragment parts.
+ setParts("", "", "", finalPath, queryStr, fragmentStr);
+
+ return true;
+ }
+
+ /**
+ * Given a string, convert it to a URI. The string could be a
+ * full URI that is improperly escaped, a malformed URI (e.g.
+ * missing a protocol like "www.something.com"), a relative URI,
+ * or any variation there of.
+ *
+ * <p>The intention of this function is to take anything that a
+ * user might manually enter as a URI/URL and try to determine what
+ * they mean. This function differs from the URI constructor in
+ * that it makes some assumptions to make it easy to import user
+ * entered URI data.</p>
+ *
+ * <p>This function is intended to be a helper function.
+ * It is not all-knowning and will probably make mistakes
+ * when attempting to parse a string of unknown origin. If
+ * your applicaiton is receiving input from the user, your
+ * application should already have a good idea what the user
+ * should be entering, and your application should be
+ * pre-processing the user's input to make sure it is well formed
+ * before passing it to this function.</p>
+ *
+ * <p>It is assumed that the string given to this function is
+ * something the user may have manually entered. Given this,
+ * the URI string is probably unescaped or improperly escaped.
+ * This function will attempt to properly escape the URI by
+ * using forceEscape(). The result is that a toString() call
+ * on a URI that was created from unknownToURI() may not match
+ * the input string due to the difference in escaping.</p>
+ *
+ * @param unknown a potental URI string that should be parsed
+ * and loaded into this object.
+ * @param defaultScheme if it is determined that the passed string
+ * looks like a URI, but it is missing the scheme part, this
+ * string will be used as the missing scheme.
+ *
+ * @return true if the given string was successfully parsed into
+ * a valid URI object, false otherwise.
+ */
+ public function unknownToURI(unknown:String, defaultScheme:String = "http") : Boolean
+ {
+ var temp:String;
+
+ if (unknown.length == 0)
+ {
+ this.initialize();
+ return false;
+ }
+
+ // Some users love the backslash key. Fix it.
+ unknown = unknown.replace(/\\/g, "/");
+
+ // Check for any obviously missing scheme.
+ if (unknown.length >= 2)
+ {
+ temp = unknown.substr(0, 2);
+ if (temp == "//")
+ unknown = defaultScheme + ":" + unknown;
+ }
+
+ if (unknown.length >= 3)
+ {
+ temp = unknown.substr(0, 3);
+ if (temp == "://")
+ unknown = defaultScheme + unknown;
+ }
+
+ // Try parsing it as a normal URI
+ var uri:URI = new URI(unknown);
+
+ if (uri.isHierarchical() == false)
+ {
+ if (uri.scheme == UNKNOWN_SCHEME)
+ {
+ this.initialize();
+ return false;
+ }
+
+ // It's a non-hierarchical URI
+ copyURI(uri);
+ forceEscape();
+ return true;
+ }
+ else if ((uri.scheme != UNKNOWN_SCHEME) &&
+ (uri.scheme.length > 0))
+ {
+ if ( (uri.authority.length > 0) ||
+ (uri.scheme == "file") )
+ {
+ // file://... URI
+ copyURI(uri);
+ forceEscape(); // ensure proper escaping
+ return true;
+ }
+ else if (uri.authority.length == 0 && uri.path.length == 0)
+ {
+ // It's is an incomplete URI (eg "http://")
+
+ setParts(uri.scheme, "", "", "", "", "");
+ return false;
+ }
+ }
+ else
+ {
+ // Possible relative URI. We can only detect relative URI's
+ // that start with "." or "..". If it starts with something
+ // else, the parsing is ambiguous.
+ var path:String = uri.path;
+
+ if (path == ".." || path == "." ||
+ (path.length >= 3 && path.substr(0, 3) == "../") ||
+ (path.length >= 2 && path.substr(0, 2) == "./") )
+ {
+ // This is a relative URI.
+ copyURI(uri);
+ forceEscape();
+ return true;
+ }
+ }
+
+ // Ok, it looks like we are just a normal URI missing the scheme. Tack
+ // on the scheme.
+ uri = new URI(defaultScheme + "://" + unknown);
+
+ // Check to see if we are good now
+ if (uri.scheme.length > 0 && uri.authority.length > 0)
+ {
+ // It was just missing the scheme.
+ copyURI(uri);
+ forceEscape(); // Make sure we are properly encoded.
+ return true;
+ }
+
+ // don't know what this is
+ this.initialize();
+ return false;
+ }
+
+ } // end URI class
+} // end package
\ No newline at end of file |