first cut at a native windows version of uconv
not part of build!
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alecf%flett.org
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f8a4e98ca2
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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 Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <windows.h>
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#include "nsNativeUConvService.h"
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#include "nsIUnicodeDecoder.h"
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#include "nsIUnicodeEncoder.h"
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#include "nsICharRepresentable.h"
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#include "nsIPlatformCharset.h"
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#include "nsIServiceManager.h"
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#include "pldhash.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsCRT.h"
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#include "nsURLProperties.h"
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extern nsURLProperties* gCodePageInfo;
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// maps charset names to windows codepages
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static PLDHashTable* gCharsetToCPMap = nsnull;
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struct CodePageMapEntry : public PLDHashEntryHdr
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{
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UINT mCodePage;
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const char* mCharset; // xxx ownership?
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};
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PR_STATIC_CALLBACK(const void*)
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GetCharsetName(PLDHashTable*, PLDHashEntryHdr* aHdr)
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{
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CodePageMapEntry* entry =
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NS_STATIC_CAST(CodePageMapEntry*, aHdr);
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return entry->mCharset;
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}
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PR_STATIC_CALLBACK(PRBool)
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MatchCharsetName(PLDHashTable*, const PLDHashEntryHdr* aHdr,
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const void* key)
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{
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const CodePageMapEntry* entry =
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NS_STATIC_CAST(const CodePageMapEntry*, aHdr);
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const char* keyString =
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NS_STATIC_CAST(const char*, key);
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return (strcmp(entry->mCharset, keyString) == 0);
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}
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static const struct PLDHashTableOps charsetMapOps = {
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PL_DHashAllocTable,
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PL_DHashFreeTable,
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GetCharsetName,
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PL_DHashStringKey,
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MatchCharsetName,
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PL_DHashMoveEntryStub,
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PL_DHashClearEntryStub,
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PL_DHashFinalizeStub,
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nsnull
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};
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BOOL CALLBACK AddCodePageEntry(LPTSTR aCodePageString)
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{
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CodePageMapEntry* entry =
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NS_STATIC_CAST(CodePageMapEntry*,
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PL_DHashTableOperate(gCharsetToCPMap, aCodePageString, PL_DHASH_ADD));
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// always continue
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if (!entry) return TRUE;
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// add an entry
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PRInt32 error;
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entry->mCodePage = nsCAutoString(aCodePageString).ToInteger(&error);
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// XXX handle error
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nsAutoString charset;
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gCodePageInfo->Get(NS_LITERAL_STRING("acp.") +
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NS_ConvertASCIItoUCS2(aCodePageString), charset);
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entry->mCharset = ToNewCString(charset);
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printf("AddCodePageEntry(%d -> %s)\n", entry->mCodePage, entry->mCharset);
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#if 1
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// now try GetCPInfoEx
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CPINFOEX cpinfo;
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// now have to look this up with GetCPInfoEx()
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GetCPInfoEx(entry->mCodePage, 0, &cpinfo);
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// XXX handle error
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printf(" --> %s\n", cpinfo.CodePageName);
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#endif
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return TRUE;
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}
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static
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void InitCharsetToCPMap() {
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NS_ASSERTION(!gCharsetToCPMap, "Double-init of charset table");
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gCharsetToCPMap = new PLDHashTable;
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PL_DHashTableInit(gCharsetToCPMap, &charsetMapOps,
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nsnull, sizeof(CodePageMapEntry), 10);
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EnumSystemCodePages(AddCodePageEntry, CP_INSTALLED); // CP_SUPPORTED
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}
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static void
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FreeCharsetToCPMap() {
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// free up codepage strings
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}
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static UINT CharsetToCodePage(const char* aCharset)
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{
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CodePageMapEntry* entry =
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NS_STATIC_CAST(CodePageMapEntry*,
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PL_DHashTableOperate(gCharsetToCPMap, aCharset, PL_DHASH_LOOKUP));
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if (!entry || PL_DHASH_ENTRY_IS_FREE(entry))
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return 0;
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return entry->mCodePage;
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}
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class WinUConvAdapter : public nsIUnicodeDecoder,
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public nsIUnicodeEncoder,
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public nsICharRepresentable
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{
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public:
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WinUConvAdapter();
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virtual ~WinUConvAdapter();
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nsresult Init(const char* from, const char* to);
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NS_DECL_ISUPPORTS;
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// Decoder methods:
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NS_IMETHOD Convert(const char * aSrc,
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PRInt32 * aSrcLength,
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PRUnichar * aDest,
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PRInt32 * aDestLength);
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NS_IMETHOD GetMaxLength(const char * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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NS_IMETHOD Reset();
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// Encoder methods:
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NS_IMETHOD Convert(const PRUnichar * aSrc,
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PRInt32 * aSrcLength,
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char * aDest,
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PRInt32 * aDestLength);
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NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD GetMaxLength(const PRUnichar * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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// defined by the Decoder: NS_IMETHOD Reset();
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NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder,
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PRUnichar aChar);
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NS_IMETHOD FillInfo(PRUint32* aInfo);
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private:
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static PRUint32 gRefCnt;
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};
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PRUint32 WinUConvAdapter::gRefCnt = 0;
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NS_IMPL_ISUPPORTS3(WinUConvAdapter,
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nsIUnicodeDecoder,
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nsIUnicodeEncoder,
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nsICharRepresentable)
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WinUConvAdapter::WinUConvAdapter()
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{
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if (++gRefCnt == 1) {
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nsCOMPtr<nsIPlatformCharset> platformCharset =
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do_GetService(NS_PLATFORMCHARSET_CONTRACTID);
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InitCharsetToCPMap();
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}
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}
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WinUConvAdapter::~WinUConvAdapter()
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{
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if (--gRefCnt == 0) {
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FreeCharsetToCPMap();
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}
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}
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nsresult
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WinUConvAdapter::Init(const char* from, const char* to)
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{
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UINT fromCP = CharsetToCodePage(from);
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UINT toCP = CharsetToCodePage(to);
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printf("WinUConvAdapter::Init(%s -> %d, %s -> %d)\n",
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from, fromCP,
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to, toCP);
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return NS_OK;
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}
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NS_IMETHODIMP
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WinUConvAdapter::Convert(const char * aSrc,
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PRInt32 * aSrcLength,
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PRUnichar * aDest,
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PRInt32 * aDestLength)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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WinUConvAdapter::GetMaxLength(const char * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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WinUConvAdapter::Reset()
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// Encoder methods:
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NS_IMETHODIMP
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WinUConvAdapter::Convert(const PRUnichar * aSrc,
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PRInt32 * aSrcLength,
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char * aDest,
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PRInt32 * aDestLength)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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WinUConvAdapter::Finish(char * aDest, PRInt32 * aDestLength)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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WinUConvAdapter::GetMaxLength(const PRUnichar * aSrc,
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PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// defined by the Decoder: NS_IMETHOD Reset();
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NS_IMETHODIMP
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WinUConvAdapter::SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder,
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PRUnichar aChar)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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WinUConvAdapter::FillInfo(PRUint32* aInfo)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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// NativeUConvService
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NS_IMPL_ISUPPORTS1(NativeUConvService,
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nsINativeUConvService);
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NS_IMETHODIMP
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NativeUConvService::GetNativeConverter(const char* from,
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const char* to,
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nsISupports** aResult)
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{
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*aResult = nsnull;
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WinUConvAdapter* ucl = new WinUConvAdapter();
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if (!ucl)
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return NS_ERROR_OUT_OF_MEMORY;
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nsresult rv = ucl->Init(from, to);
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if (NS_SUCCEEDED(rv)) {
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NS_ADDREF(*aResult = (nsISupports*)(nsIUnicharEncoder*)ucl);
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}
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return rv;
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}
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