mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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150 lines
5.3 KiB
C++
150 lines
5.3 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=4:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developers of the Original Code are
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* Naoki Hotta <nhotta@netscape.com> and Jungshik Shin <jshin@mailaps.org>.
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* Portions created by the Initial Developer are Copyright (C) 2002, 2003
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* the Initial Developers. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsString.h"
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#include "nsIUnicodeEncoder.h"
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#include "nsICharsetConverterManager.h"
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#include "nsReadableUtils.h"
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#include "nsIServiceManager.h"
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#include "nsUConvDll.h"
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#include "prmem.h"
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#include "nsUTF8ConverterService.h"
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#include "nsEscape.h"
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#include "nsAutoPtr.h"
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NS_IMPL_ISUPPORTS1(nsUTF8ConverterService, nsIUTF8ConverterService)
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static nsresult
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ToUTF8(const nsACString &aString, const char *aCharset, nsACString &aResult)
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{
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nsresult rv;
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if (!aCharset || !*aCharset)
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return NS_ERROR_INVALID_ARG;
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nsCOMPtr<nsICharsetConverterManager> ccm;
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ccm = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIUnicodeDecoder> unicodeDecoder;
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rv = ccm->GetUnicodeDecoder(aCharset,
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getter_AddRefs(unicodeDecoder));
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NS_ENSURE_SUCCESS(rv, rv);
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PRInt32 srcLen = aString.Length();
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PRInt32 dstLen;
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const nsAFlatCString& inStr = PromiseFlatCString(aString);
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rv = unicodeDecoder->GetMaxLength(inStr.get(), srcLen, &dstLen);
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoArrayPtr<PRUnichar> ustr(new PRUnichar[dstLen]);
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NS_ENSURE_TRUE(ustr, NS_ERROR_OUT_OF_MEMORY);
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rv = unicodeDecoder->Convert(inStr.get(), &srcLen, ustr, &dstLen);
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if (NS_SUCCEEDED(rv)){
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// Tru64 Cxx and IRIX MIPSpro 7.3 need an explicit get()
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CopyUTF16toUTF8(Substring(ustr.get(), ustr + dstLen), aResult);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsUTF8ConverterService::ConvertStringToUTF8(const nsACString &aString,
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const char *aCharset,
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PRBool aSkipCheck,
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nsACString &aUTF8String)
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{
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// return if ASCII only or valid UTF-8 providing that the ASCII/UTF-8
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// check is requested. It may not be asked for if a caller suspects
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// that the input is in non-ASCII 7bit charset (ISO-2022-xx, HZ) or
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// it's in a charset other than UTF-8 that can be mistaken for UTF-8.
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if (!aSkipCheck && (IsASCII(aString) || IsUTF8(aString))) {
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aUTF8String = aString;
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return NS_OK;
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}
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aUTF8String.Truncate();
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nsresult rv = ToUTF8(aString, aCharset, aUTF8String);
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// additional protection for cases where check is skipped and the input
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// is actually in UTF-8 as opposed to aCharset. (i.e. caller's hunch
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// was wrong.) We don't check ASCIIness assuming there's no charset
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// incompatible with ASCII (we don't support EBCDIC).
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if (aSkipCheck && NS_FAILED(rv) && IsUTF8(aString)) {
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aUTF8String = aString;
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return NS_OK;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsUTF8ConverterService::ConvertURISpecToUTF8(const nsACString &aSpec,
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const char *aCharset,
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nsACString &aUTF8Spec)
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{
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// assume UTF-8 if the spec contains unescaped non-ASCII characters.
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// No valid spec in Mozilla would break this assumption.
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if (!IsASCII(aSpec)) {
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aUTF8Spec = aSpec;
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return NS_OK;
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}
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aUTF8Spec.Truncate();
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nsCAutoString unescapedSpec;
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// NS_UnescapeURL does not fill up unescapedSpec unless there's at least
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// one character to unescape.
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PRBool written = NS_UnescapeURL(PromiseFlatCString(aSpec).get(), aSpec.Length(),
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esc_OnlyNonASCII, unescapedSpec);
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if (!written) {
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aUTF8Spec = aSpec;
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return NS_OK;
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}
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// return if ASCII only or escaped UTF-8
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if (IsASCII(unescapedSpec) || IsUTF8(unescapedSpec)) {
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aUTF8Spec = unescapedSpec;
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return NS_OK;
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}
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return ToUTF8(unescapedSpec, aCharset, aUTF8Spec);
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}
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