gecko-dev/netwerk/base/public/nsIURL.idl

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 * The Original Code is mozilla.org code.
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 * Contributor(s):
 *   Gagan Saksena <gagan@netscape.com> (original author)
 *   Darin Fisher <darin@netscape.com>
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#include "nsIURI.idl"

/**
 * The nsIURL interface provides convenience methods that further
 * break down the path portion of nsIURI:
 *
 * http://directory/fileBaseName.fileExtension?query
 * http://directory/fileBaseName.fileExtension#ref
 * http://directory/fileBaseName.fileExtension;param
 *       \          \                       /
 *        \          -----------------------
 *         \                   |          /
 *          \               fileName     /
 *           ----------------------------
 *                       |
 *                   filePath
 *
 * @status UNDER_REVIEW
 */
[scriptable, uuid(d6116970-8034-11d3-9399-00104ba0fd40)]
interface nsIURL : nsIURI
{
    /*************************************************************************
     * The URL path is broken down into the following principal components:
     */

    /**
     * Returns a path including the directory and file portions of a
     * URL.  For example, the filePath of "http://foo/bar.html#baz" is
     * "/foo/bar.html".
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String filePath;

    /**
     * Returns the parameters specified after the ; in the URL. 
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String param;

    /**
     * Returns the query portion (the part after the "?") of the URL.
     * If there isn't one, an empty string is returned.
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String query;

    /**
     * Returns the reference portion (the part after the "#") of the URL.
     * If there isn't one, an empty string is returned.
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String ref;


    /*************************************************************************
     * The URL filepath is broken down into the following sub-components:
     */

    /**
     * Returns the directory portion of a URL. 
     * If the URL denotes a path to a directory and not a file,
     * e.g. http://foo/bar/, then the Directory attribute accesses
     * the complete /foo/bar/ portion, and the FileName is the 
     * empty string. If the trailing slash is omitted, then the
     * Directory is /foo/ and the file is bar (i.e. this is a 
     * syntactic, not a semantic breakdown of the Path).
     * And hence dont rely on this for something to be a definitely 
     * be a file. But you can get just the leading directory portion 
     * for sure.
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String directory;

    /**
     * Returns the file name portion of a URL.
     * If the URL denotes a path to a directory and not a file,
     * e.g. http://foo/bar/, then the Directory attribute accesses
     * the complete /foo/bar/ portion, and the FileName is the 
     * empty string. Note that this is purely based on searching 
     * for the last trailing slash. And hence dont rely on this to 
     * be a definite file. 
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String fileName;


    /*************************************************************************
     * The URL filename is broken down even further:
     */

    /**
     * Returns the file basename portion of a filename in a url.
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String fileBaseName;

    /**
     * Returns the file extension portion of a filename in a url.  If a file
     * extension does not exist, the empty string is returned.
     *
     * Some characters may be escaped.
     */
    attribute AUTF8String fileExtension;
};