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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* 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"
[scriptable, uuid(249f52a3-2599-4b00-ba40-0481364831a2)]
interface nsIUTF8ConverterService : nsISupports
{
/**
* Ensure that |aString| is encoded in UTF-8. If not,
* convert to UTF-8 assuming it's encoded in |aCharset|
* and return the converted string in UTF-8.
*
* @param aString a string to ensure its UTF8ness
* @param aCharset the charset to convert from if |aString| is not in UTF-8
* @param aSkipCheck determines whether or not to skip 'ASCIIness' and
* 'UTF8ness' check. Set this to PR_TRUE only if you suspect that
* aString can be mistaken for ASCII / UTF-8 but is actually NOT
* in ASCII / UTF-8 so that aString has to go through the conversion.
* skipping ASCIIness/UTF8ness check.
* The most common case is the input is in 7bit non-ASCII charsets
* like ISO-2022-JP, HZ or UTF-7 (in its original form or
* a modified form used in IMAP folder names).
* @param aAllowSubstitution when true, allow the decoder to substitute
* invalid input sequences by replacement characters (defaults to
* true)
* @return the converted string in UTF-8.
* @throws NS_ERROR_UCONV_NOCONV when there is no decoder for aCharset
* or error code of nsIUnicodeDecoder in case of conversion failure
*/
[optional_argc]
AUTF8String convertStringToUTF8(in ACString aString,
in string aCharset,
in boolean aSkipCheck,
[optional] in boolean aAllowSubstitution);
/* XXX : To-be-added. convertStringFromUTF8 */
/**
* Ensure that |aSpec| (after URL-unescaping it) is encoded in UTF-8.
* If not, convert it to UTF-8, assuming it's encoded in |aCharset|,
* and return the result.
*
* <p>Make sure that all characters outside US-ASCII in your input spec
* are url-escaped if your spec is not in UTF-8 (before url-escaping)
* because the presence of non-ASCII characters is <strong>blindly</strong>
* regarded as an indication that your input spec is in unescaped UTF-8
* and it will be returned without further processing. No valid spec
* going around in Mozilla code would break this assumption.
*
* <p>XXX The above may change in the future depending on the usage pattern.
*
* @param aSpec an url-escaped URI spec to ensure its UTF8ness
* @param aCharset the charset to convert from if |aSpec| is not in UTF-8
* @return the converted spec in UTF-8.
* @throws NS_ERROR_UCONV_NOCONV when there is no decoder for aCharset
* or error code of nsIUnicodeDecoder in case of conversion failure
*/
AUTF8String convertURISpecToUTF8(in ACString aSpec,
in string aCharset);
};
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