gecko/netwerk/base/public/nsINetUtil.idl

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 * for the specific language governing rights and limitations under the
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 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Boris Zbarsky <bzbarsky@mit.edu> (original author)
 *   Benjamin Smedberg <benjamin@smedbergs.us>
 *
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#include "nsISupports.idl"

interface nsIURI;

/**
 * nsINetUtil provides various network-related utility methods.
 */
[scriptable, uuid(c2bf4fea-7f9f-44a4-a7e0-8b323fdcc5d5)]
interface nsINetUtil : nsISupports
{
  /**
   * Parse a content-type header and return the content type and
   * charset (if any).
   *
   * @param aTypeHeader the header string to parse
   * @param [out] aCharset the charset parameter specified in the
   *              header, if any.
   * @param [out] aHadCharset whether a charset was explicitly specified.
   * @return the MIME type specified in the header, in lower-case.
   */
  AUTF8String parseContentType(in AUTF8String aTypeHeader,
                               out AUTF8String aCharset,
                               out boolean aHadCharset);

  /** Escape every character with its %XX-escaped equivalent */
  const unsigned long ESCAPE_ALL = 0;

  /** Leave alphanumeric characters intact and %XX-escape all others */
  const unsigned long ESCAPE_XALPHAS = 1;

  /** Leave alphanumeric characters intact, convert spaces to '+',
      %XX-escape all others */
  const unsigned long ESCAPE_XPALPHAS = 2;

  /** Leave alphanumeric characters and forward slashes intact,
      %XX-escape all others */
  const unsigned long ESCAPE_URL_PATH = 3;

  /**
   * escape a string with %00-style escaping
   */
  ACString escapeString(in ACString aString, in unsigned long aEscapeType);

  /**
   * Test whether the given URI's handler has the given protocol flags.
   *
   * @param aURI the URI in question
   * @param aFlags the flags we're testing for.
   *
   * @return whether the protocol handler for aURI has all the flags
   *         in aFlags.
   */
  boolean protocolHasFlags(in nsIURI aURI, in unsigned long aFlag);

  /**
   * Test whether the protocol handler for this URI or that for any of
   * its inner URIs has the given protocol flags.  This will QI aURI to
   * nsINestedURI and walk the nested URI chain.
   *
   * @param aURI the URI in question
   * @param aFlags the flags we're testing for.
   *
   * @return whether any of the protocol handlers involved have all the flags
   *         in aFlags.
   */
  boolean URIChainHasFlags(in nsIURI aURI, in unsigned long aFlags);

  /**
   * Take aURI and produce an immutable version of it for the caller.  If aURI
   * is immutable this will be aURI itself; otherwise this will be a clone,
   * marked immutable if possible.  Passing null to this method is allowed; in
   * that case it will return null.
   */
  nsIURI toImmutableURI(in nsIURI aURI);
};