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- /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* vim:expandtab:shiftwidth=4:tabstop=4:
- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Jungshik Shin <jshin@mailaps.org>
- * Portions created by the Initial Developer are Copyright (C) 2003.
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- /*
- * This interface allows any module to access the routine
- * for MIME header parameter parsing (RFC 2231)
- */
-
- #include "nsISupports.idl"
-
- [scriptable, uuid(ddbbdfb8-a1c0-4dd5-a31b-5d2a7a3bb6ec)]
- interface nsIMIMEHeaderParam : nsISupports {
-
- /**
- * Given the value of a single header field (such as
- * Content-Disposition and Content-Type) and the name of a parameter
- * (e.g. filename, name, charset), returns the value of the parameter.
- * The value is obtained by decoding RFC 2231-style encoding,
- * RFC 2047-style encoding, and converting to UniChar(UTF-16)
- * from charset specified in RFC 2231/2047 encoding, UTF-8,
- * <code>aFallbackCharset</code> and the locale charset as the last
- * resort if <code>TryLocaleCharset</code> is set.
- *
- * <p>
- * This method internally invokes <code>getParameterInternal</code>,
- * However, it does not stop at decoding RFC 2231 (the task for
- * <code>getParameterInternal</code> but tries to cope
- * with several non-standard-compliant cases mentioned below.
- *
- * <p>
- * Note that a lot of MUAs and HTTP servers put RFC 2047-encoded parameters
- * in mail headers and HTTP headers. Unfortunately, this includes Mozilla
- * as of 2003-05-30. Even more standard-ignorant MUAs, web servers and
- * application servers put 'raw 8bit characters'. This will try to cope
- * with all these cases as gracefully as possible. Additionally, it
- * returns the language tag if the parameter is encoded per RFC 2231 and
- * includes lang.
- *
- *
- *
- * @param aHeaderVal a header string to get the value of a parameter
- * from.
- * @param aParamName the name of a MIME header parameter (e.g.
- * filename, name, charset). If empty, returns
- * the first (possibly) _unnamed_ 'parameter'.
- * @param aFallbackCharset fallback charset to try if the string after
- * RFC 2231/2047 decoding or the raw 8bit
- * string is not UTF-8
- * @param aTryLocaleCharset If set, makes yet another attempt
- * with the locale charset.
- * @param aLang If non-null, assigns it to a pointer
- * to a string containing the value of language
- * obtained from RFC 2231 parsing. Caller has to
- * nsMemory::Free it.
- * @return the value of <code>aParamName</code> in Unichar(UTF-16).
- */
-
- AString getParameter(in ACString aHeaderVal,
- in string aParamName,
- in ACString aFallbackCharset,
- in boolean aTryLocaleCharset,
- out string aLang);
- /**
- * Given the value of a single header field (such as
- * Content-Disposition and Content-Type) and the name of a parameter
- * (e.g. filename, name, charset), returns the value of the parameter
- * after decoding RFC 2231-style encoding.
- * <p>
- * For <strong>internal use only</strong>. The only other place where
- * this needs to be invoked is |MimeHeaders_get_parameter| in
- * mailnews/mime/src/mimehdrs.cpp defined as
- * char * MimeHeaders_get_parameter (const char *header_value,
- * const char *parm_name,
- * char **charset, char **language)
- *
- * Otherwise, this method would have been made static.
- *
- * @param aHeaderVal a header string to get the value of a parameter from.
- * @param aParamName the name of a MIME header parameter (e.g.
- * filename, name, charset). If empty, returns
- * the first (possibly) _unnamed_ 'parameter'.
- * @param aCharset If non-null, it gets assigned a new pointer
- * to a string containing the value of charset obtained
- * from RFC 2231 parsing. Caller has to nsMemory::Free it.
- * @param aLang If non-null, it gets assigned a new pointer
- * to a string containing the value of language obtained
- * from RFC 2231 parsing. Caller has to nsMemory::Free it.
- * @return the value of <code>aParamName</code> after
- * RFC 2231 decoding but without charset conversion.
- */
-
- [noscript]
- string getParameterInternal(in string aHeaderVal,
- in string aParamName,
- out string aCharset,
- out string aLang);
-
-
- /**
- * Given a header value, decodes RFC 2047-style encoding and
- * returns the decoded header value in UTF-8 if either it's
- * RFC-2047-encoded or aDefaultCharset is given. Otherwise,
- * returns the input header value (in whatever encoding)
- * as it is except that RFC 822 (using backslash) quotation and
- * CRLF (if aEatContinuation is set) are stripped away
- * <p>
- * For internal use only. The only other place where this needs to be
- * invoked is <code>MIME_DecodeMimeHeader</code> in
- * mailnews/mime/src/mimehdrs.cpp defined as
- * char * Mime_DecodeMimeHeader(char *header_val, const char *charset,
- * PRBool override, PRBool eatcontinuation)
- *
- * @param aHeaderVal a header value to decode
- * @param aDefaultCharset MIME charset to use in place of MIME charset
- * specified in RFC 2047 style encoding
- * when <code>aOverrideCharset</code> is set.
- * @param aOverrideCharset When set, overrides MIME charset specified
- * in RFC 2047 style encoding with <code>aDefaultCharset</code>
- * @param aEatContinuation When set, removes CR/LF
- * @return decoded header value
- */
- [noscript]
- ACString decodeRFC2047Header(in string aHeaderVal,
- in string aDefaultCharset,
- in boolean aOverrideCharset,
- in boolean aEatContinuation);
-
-
- /**
- * Given a header parameter, decodes RFC 2047 style encoding (if it's
- * not obtained from RFC 2231 encoding), converts it to
- * UTF-8 and returns the result in UTF-8 if an attempt to extract
- * charset info. from a few different sources succeeds.
- * Otherwise, returns the input header value (in whatever encoding)
- * as it is except that RFC 822 (using backslash) quotation is
- * stripped off.
- * <p>
- * For internal use only. The only other place where this needs to be
- * invoked is <code>mime_decode_filename</code> in
- * mailnews/mime/src/mimehdrs.cpp defined as
- * char * mime_decode_filename(char *name, const char *charset,
- * MimeDisplayOptions *opt)
- *
- * @param aParamValue the value of a parameter to decode and convert
- * @param aCharset charset obtained from RFC 2231 decoding in which
- * <code>aParamValue</code> is encoded. If null,
- * indicates that it needs to try RFC 2047, instead.
- * @param aDefaultCharset MIME charset to use when aCharset is null and
- * cannot be obtained per RFC 2047 (most likely
- * because 'bare' string is used.) Besides, it
- * overrides aCharset/MIME charset obtained from
- * RFC 2047 if <code>aOverrideCharset</code> is set.
- * @param aOverrideCharset When set, overrides MIME charset specified
- * in RFC 2047 style encoding with
- * <code>aDefaultCharset</code>
- * @return decoded parameter
- */
-
- [noscript]
- ACString decodeParameter(in ACString aParamValue,
- in string aCharset,
- in string aDefaultCharset,
- in boolean aOverrideCharset);
- };
-
-