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/* -*- Mode: idl; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsICollation;

[scriptable, uuid(04971e14-d6b3-4ada-8cbb-c3a13842b349)]
interface nsICollationFactory : nsISupports
{
    /**
     * Create a new collation for the current application locale.
     *
     * @return A new collation.
     */
    nsICollation CreateCollation();

    /**
     * Create a new collation for a given locale.
     *
     * @return A new collation.
     */
    nsICollation CreateCollationForLocale(in ACString locale);
};

[scriptable, uuid(b0132cc0-3786-4557-9874-910d7def5f93)]
interface nsICollation : nsISupports {

  // use the primary comparison for the given locale - no flags
  const long kCollationStrengthDefault = 0;

  // do not consider case differences when doing the comparison i.e. A=a)
  const long kCollationCaseInsensitiveAscii = 1;

  // do not consider accent differences when doing the comparison a=รก)
  const long kCollationAccentInsenstive = 2;

  // case sensitive collation (default)
  const long kCollationCaseSensitive = kCollationStrengthDefault;

  // case insensitive collation
  const long kCollationCaseInSensitive = (kCollationCaseInsensitiveAscii | kCollationAccentInsenstive);

  // init this interface to a specified locale (should only be called by collation factory)
  void initialize(in ACString locale);

  // compare two strings
  // result is same as strcmp
  long compareString(in long strength, in AString string1, in AString string2);

  // allocate sort key from input string
  // returns newly allocated key
  [noscript] Array<octet> allocateRawSortKey(in long strength,
                                             in AString stringIn);

  // compare two sort keys
  // result is same as strcmp
  [noscript] long compareRawSortKey(in Array<octet> key1,
                                    in Array<octet> key2);

};