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460 lines
12 KiB
C++
460 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* IBM Corporation
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* Pierre Phaneuf <pp@ludusdesign.com>
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*
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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 1999
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 12/09/1999 IBM Corp. Support for IBM codepages - 850,852,855,857,862,864
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*
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*/
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#define NS_IMPL_IDS
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#include "pratom.h"
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#include "nspr.h"
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsIFactory.h"
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#include "nsIRegistry.h"
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#include "nsIServiceManager.h"
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#include "nsIModule.h"
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#include "nsUCvIBMCID.h"
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#include "nsUCvIBMDll.h"
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#include "nsCP850ToUnicode.h"
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#include "nsCP852ToUnicode.h"
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#include "nsCP855ToUnicode.h"
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#include "nsCP857ToUnicode.h"
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#include "nsCP862ToUnicode.h"
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#include "nsCP864ToUnicode.h"
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#include "nsUnicodeToCP850.h"
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#include "nsUnicodeToCP852.h"
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#include "nsUnicodeToCP855.h"
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#include "nsUnicodeToCP857.h"
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#include "nsUnicodeToCP862.h"
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#include "nsUnicodeToCP864.h"
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//----------------------------------------------------------------------------
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// Global functions and data [declaration]
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static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
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#define DECODER_NAME_BASE "Unicode Decoder-"
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#define ENCODER_NAME_BASE "Unicode Encoder-"
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PRInt32 g_InstanceCount = 0;
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PRInt32 g_LockCount = 0;
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typedef nsresult (* fpCreateInstance) (nsISupports **);
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struct FactoryData
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{
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const nsCID * mCID;
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fpCreateInstance CreateInstance;
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char * mCharsetSrc;
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char * mCharsetDest;
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};
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static FactoryData g_FactoryData[] =
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{
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{
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&kCP850ToUnicodeCID,
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nsCP850ToUnicode::CreateInstance,
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"IBM850",
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"Unicode"
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},
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{
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&kCP852ToUnicodeCID,
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nsCP852ToUnicode::CreateInstance,
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"IBM852",
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"Unicode"
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},
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{
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&kCP855ToUnicodeCID,
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nsCP855ToUnicode::CreateInstance,
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"IBM855",
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"Unicode"
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},
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{
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&kCP857ToUnicodeCID,
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nsCP857ToUnicode::CreateInstance,
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"IBM857",
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"Unicode"
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},
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{
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&kCP862ToUnicodeCID,
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nsCP862ToUnicode::CreateInstance,
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"IBM862",
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"Unicode"
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},
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{
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&kCP864ToUnicodeCID,
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nsCP864ToUnicode::CreateInstance,
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"IBM864",
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"Unicode"
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},
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{
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&kUnicodeToCP850CID,
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nsUnicodeToCP850::CreateInstance,
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"Unicode",
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"IBM850"
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},
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{
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&kUnicodeToCP852CID,
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nsUnicodeToCP852::CreateInstance,
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"Unicode",
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"IBM852"
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},
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{
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&kUnicodeToCP855CID,
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nsUnicodeToCP855::CreateInstance,
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"Unicode",
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"IBM855"
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},
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{
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&kUnicodeToCP857CID,
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nsUnicodeToCP857::CreateInstance,
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"Unicode",
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"IBM857"
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},
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{
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&kUnicodeToCP862CID,
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nsUnicodeToCP862::CreateInstance,
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"Unicode",
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"IBM862"
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},
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{
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&kUnicodeToCP864CID,
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nsUnicodeToCP864::CreateInstance,
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"Unicode",
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"IBM864"
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},
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};
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#define ARRAY_SIZE(_array) \
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(sizeof(_array) / sizeof(_array[0]))
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//----------------------------------------------------------------------------
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// Class nsConverterFactory [declaration]
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/**
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* General factory class for converter objects.
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*
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* @created 24/Feb/1998
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* @author Catalin Rotaru [CATA]
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*/
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class nsConverterFactory : public nsIFactory
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{
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NS_DECL_ISUPPORTS
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private:
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FactoryData * mData;
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public:
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/**
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* Class constructor.
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*/
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nsConverterFactory(FactoryData * aData);
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/**
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* Class destructor.
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*/
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virtual ~nsConverterFactory();
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//--------------------------------------------------------------------------
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// Interface nsIFactory [declaration]
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NS_IMETHOD CreateInstance(nsISupports *aDelegate, const nsIID &aIID,
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void **aResult);
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NS_IMETHOD LockFactory(PRBool aLock);
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};
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//----------------------------------------------------------------------------
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// Class nsConverterModule [declaration]
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class nsConverterModule : public nsIModule
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{
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMODULE
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private:
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PRBool mInitialized;
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void Shutdown();
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public:
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nsConverterModule();
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virtual ~nsConverterModule();
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nsresult Initialize();
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};
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//----------------------------------------------------------------------------
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// Global functions and data [implementation]
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static nsConverterModule * gModule = NULL;
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager * compMgr,
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nsIFile* location,
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nsIModule** return_cobj)
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{
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nsresult rv = NS_OK;
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NS_ENSURE_ARG_POINTER(return_cobj);
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NS_ENSURE_FALSE(gModule, NS_ERROR_FAILURE);
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// Create an initialize the module instance
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nsConverterModule * m = new nsConverterModule();
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if (!m) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Increase refcnt and store away nsIModule interface to m in return_cobj
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rv = m->QueryInterface(NS_GET_IID(nsIModule), (void**)return_cobj);
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if (NS_FAILED(rv)) {
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delete m;
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m = nsnull;
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}
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gModule = m; // WARNING: Weak Reference
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return rv;
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}
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//----------------------------------------------------------------------------
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// Class nsConverterFactory [implementation]
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NS_IMPL_ISUPPORTS1(nsConverterFactory, nsIFactory)
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nsConverterFactory::nsConverterFactory(FactoryData * aData)
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{
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mData = aData;
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NS_INIT_REFCNT();
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PR_AtomicIncrement(&g_InstanceCount);
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}
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nsConverterFactory::~nsConverterFactory()
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{
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PR_AtomicDecrement(&g_InstanceCount);
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}
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//----------------------------------------------------------------------------
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// Interface nsIFactory [implementation]
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NS_IMETHODIMP nsConverterFactory::CreateInstance(nsISupports *aDelegate,
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const nsIID &aIID,
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void **aResult)
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{
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if (aResult == NULL) return NS_ERROR_NULL_POINTER;
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if (aDelegate != NULL) return NS_ERROR_NO_AGGREGATION;
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nsISupports * t;
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mData->CreateInstance(&t);
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if (t == NULL) return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(t); // Stabilize
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nsresult res = t->QueryInterface(aIID, aResult);
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NS_RELEASE(t); // Destabilize and avoid leaks. Avoid calling delete <interface pointer>
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return res;
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}
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NS_IMETHODIMP nsConverterFactory::LockFactory(PRBool aLock)
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{
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if (aLock) PR_AtomicIncrement(&g_LockCount);
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else PR_AtomicDecrement(&g_LockCount);
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return NS_OK;
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}
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//----------------------------------------------------------------------------
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// Class nsConverterModule [implementation]
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NS_IMPL_ISUPPORTS1(nsConverterModule, nsIModule)
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nsConverterModule::nsConverterModule()
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: mInitialized(PR_FALSE)
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{
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NS_INIT_ISUPPORTS();
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}
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nsConverterModule::~nsConverterModule()
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{
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Shutdown();
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}
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nsresult nsConverterModule::Initialize()
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{
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return NS_OK;
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}
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void nsConverterModule::Shutdown()
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{
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}
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//----------------------------------------------------------------------------
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// Interface nsIModule [implementation]
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NS_IMETHODIMP nsConverterModule::GetClassObject(nsIComponentManager *aCompMgr,
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const nsCID& aClass,
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const nsIID& aIID,
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void ** r_classObj)
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{
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nsresult rv;
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// Defensive programming: Initialize *r_classObj in case of error below
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if (!r_classObj) {
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return NS_ERROR_INVALID_POINTER;
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}
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*r_classObj = NULL;
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if (!mInitialized) {
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rv = Initialize();
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if (NS_FAILED(rv)) {
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return rv;
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}
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mInitialized = PR_TRUE;
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}
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FactoryData * data;
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nsConverterFactory * fact;
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// XXX cache these factories
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for (PRUint32 i=0; i<ARRAY_SIZE(g_FactoryData); i++) {
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data = &(g_FactoryData[i]);
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if (aClass.Equals(*(data->mCID))) {
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fact = new nsConverterFactory(data);
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if (fact == NULL) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = fact->QueryInterface(aIID, (void **) r_classObj);
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if (NS_FAILED(rv)) delete fact;
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return rv;
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}
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}
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return NS_ERROR_FACTORY_NOT_REGISTERED;
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}
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NS_IMETHODIMP nsConverterModule::RegisterSelf(nsIComponentManager *aCompMgr,
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nsIFile* aPath,
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const char* registryLocation,
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const char* componentType)
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{
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nsresult res;
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PRUint32 i;
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nsIRegistry * registry = NULL;
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nsRegistryKey key;
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char buff[1024];
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// get the registry
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res = nsServiceManager::GetService(NS_REGISTRY_CONTRACTID,
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NS_GET_IID(nsIRegistry), (nsISupports**)®istry);
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if (NS_FAILED(res)) goto done;
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// open the registry
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res = registry->OpenWellKnownRegistry(
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nsIRegistry::ApplicationComponentRegistry);
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if (NS_FAILED(res)) goto done;
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char name[128];
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char contractid[128];
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char * cid_string;
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for (i=0; i<ARRAY_SIZE(g_FactoryData); i++) {
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if(0==PL_strcmp(g_FactoryData[i].mCharsetSrc,"Unicode"))
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{
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PL_strcpy(name, ENCODER_NAME_BASE);
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PL_strcat(name, g_FactoryData[i].mCharsetDest);
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PL_strcpy(contractid, NS_UNICODEENCODER_CONTRACTID_BASE);
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PL_strcat(contractid, g_FactoryData[i].mCharsetDest);
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} else {
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PL_strcpy(name, DECODER_NAME_BASE);
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PL_strcat(name, g_FactoryData[i].mCharsetSrc);
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PL_strcpy(contractid, NS_UNICODEDECODER_CONTRACTID_BASE);
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PL_strcat(contractid, g_FactoryData[i].mCharsetSrc);
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}
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// register component
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res = aCompMgr->RegisterComponentSpec(*(g_FactoryData[i].mCID), name,
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contractid, aPath, PR_TRUE, PR_TRUE);
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if(NS_FAILED(res) && (NS_ERROR_FACTORY_EXISTS != res)) goto done;
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// register component info
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// XXX take these KONSTANTS out of here; refine this code
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cid_string = g_FactoryData[i].mCID->ToString();
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sprintf(buff, "%s/%s", "software/netscape/intl/uconv", cid_string);
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nsCRT::free(cid_string);
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res = registry -> AddSubtree(nsIRegistry::Common, buff, &key);
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if (NS_FAILED(res)) goto done;
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res = registry -> SetStringUTF8(key, "source", g_FactoryData[i].mCharsetSrc);
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if (NS_FAILED(res)) goto done;
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res = registry -> SetStringUTF8(key, "destination", g_FactoryData[i].mCharsetDest);
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if (NS_FAILED(res)) goto done;
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}
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done:
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if (registry != NULL) {
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nsServiceManager::ReleaseService(NS_REGISTRY_CONTRACTID, registry);
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}
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return res;
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}
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NS_IMETHODIMP nsConverterModule::UnregisterSelf(nsIComponentManager *aCompMgr,
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nsIFile* aPath,
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const char* registryLocation)
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{
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// XXX also delete the stuff I added to the registry
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nsresult rv;
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for (PRUint32 i=0; i<ARRAY_SIZE(g_FactoryData); i++) {
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rv = aCompMgr->UnregisterComponentSpec(*(g_FactoryData[i].mCID), aPath);
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsConverterModule::CanUnload(nsIComponentManager *aCompMgr,
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PRBool *okToUnload)
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{
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if (!okToUnload) {
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return NS_ERROR_INVALID_POINTER;
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}
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*okToUnload = (g_InstanceCount == 0 && g_LockCount == 0);
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return NS_OK;
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}
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