unixwareplatformutils.cpp

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/*
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Log: UnixWarePlatformUtils.cpp,v $
 * Revision 1.18  2004/09/08 13:56:43  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.17  2004/01/29 11:51:21  cargilld
 * Code cleanup changes to get rid of various compiler diagnostic messages.
 *
 * Revision 1.16  2004/01/13 16:34:22  cargilld
 * Misc memory management changes.
 *
 * Revision 1.15  2003/12/24 15:24:14  cargilld
 * More updates to memory management so that the static memory manager.
 *
 * Revision 1.14  2003/12/17 19:58:05  cargilld
 * Platform update for memory management so that the static memory manager (one
 * used to call Initialize) is only for static data.
 *
 * Revision 1.13  2003/12/17 15:16:10  cargilld
 * Platform update for memory management so that the static memory manager (one
 * used to call Initialize) is only for static data.
 *
 * Revision 1.12  2003/12/17 13:58:03  cargilld
 * Platform update for memory management so that the static memory manager (one
 * used to call Initialize) is only for static data.
 *
 * Revision 1.11  2003/10/01 16:32:40  neilg
 * improve handling of out of memory conditions, bug #23415.  Thanks to David Cargill.
 *
 * Revision 1.10  2003/05/15 18:37:49  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.9  2003/04/25 17:21:31  peiyongz
 * throw exception if getcwd() fails
 *
 * Revision 1.8  2003/04/24 02:59:20  peiyongz
 * Logical Path Resolution
 *
 * Revision 1.7  2003/04/21 04:32:10  peiyongz
 * performance tuning
 *
 * Revision 1.6  2003/03/09 17:01:08  peiyongz
 * PanicHandler
 *
 * Revision 1.5  2003/03/07 20:34:16  tng
 * [Bug 17774] Unixware platform utils not implemented .  Patch from Peter Crozier.
 *
 * Revision 1.4  2002/11/04 15:13:01  tng
 * C++ Namespace Support.
 *
 * Revision 1.3  2002/05/21 20:31:48  tng
 * Minor update: Remove obsolete code
 *
 * Revision 1.2  2002/05/01 21:13:32  tng
 * [Bug 7265] UnixWare port broken in platformTerm() since rev 1.10.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:26  peiyongz
 * sane_include
 *
 * Revision 1.11  2001/10/25 15:20:31  tng
 * Need to guard with NO_APP_THREADS when destroying the mutex.
 *
 * Revision 1.10  2001/10/23 23:13:09  peiyongz
 * [Bug#880] patch to PlatformUtils:init()/term() and related. from Mark Weaver
 *
 * Revision 1.9  2001/02/09 14:40:02  tng
 * Update support for SCO UnixWare 7 (gcc).  Tested under UnixWare 7.1.1 with gcc version 2.95.2 19991024 (release) with gmake 3.79.1.  Updated by Martin Kalen.
 *
 * Revision 1.8  2000/07/25 22:30:54  aruna1
 * Char definitions in XMLUni moved to XMLUniDefs
 *
 * Revision 1.7  2000/03/24 00:13:34  aruna1
 * Platform initialization taken care for both threaded and non-threaded environment
 *
 * Revision 1.6  2000/03/02 21:10:39  abagchi
 * Added empty function platformTerm()
 *
 * Revision 1.5  2000/03/02 20:42:42  abagchi
 * Fixed typo in XMLExcepts
 *
 * Revision 1.4  2000/03/02 19:55:33  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.3  2000/02/06 07:48:31  rahulj
 * Year 2K copyright swat.
 *
 * Revision 1.2  2000/01/25 22:33:13  aruna1
 * Updated panic information
 *
 * Revision 1.1  1999/12/17 22:24:03  rahulj
 * Added missing UnixWare files to the repository.
 *
 * Created by Ron Record ([e-mail]) based on SolarisPlatformUtils.cpp
 * 13-Nov-1999
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------

#if !defined (APP_NO_THREADS)
#include    <pthread.h>
#endif // APP_NO_THREADS


#include    <unistd.h>
#include    <stdio.h>
#include    <stdlib.h>
#include    <errno.h>
#include    <libgen.h>
#include    <sys/timeb.h>
#include    <limits.h>
#include    <xercesc/util/PlatformUtils.hpp>
#include    <xercesc/util/RuntimeException.hpp>
#include    <xercesc/util/Janitor.hpp>
#include    <xercesc/util/Mutexes.hpp>
#include    <xercesc/util/XMLString.hpp>
#include    <xercesc/util/XMLUniDefs.hpp>
#include    <xercesc/util/XMLUni.hpp>
#include    <xercesc/util/OutOfMemoryException.hpp>

#if defined (XML_USE_ICU_TRANSCODER)
    #include <xercesc/util/Transcoders/ICU/ICUTransService.hpp>
#elif defined (XML_USE_NATIVE_TRANSCODER)
    #include <xercesc/util/Transcoders/Iconv/IconvTransService.hpp>
#else
    #error Transcoding service unknown by UnixWarePlatformUtils.cpp
#endif


#if defined(XML_USE_ICU_MESSAGELOADER)
    #include <xercesc/util/MsgLoaders/ICU/ICUMsgLoader.hpp>
#elif defined (XML_USE_ICONV_MESSAGELOADER)
    #include <xercesc/util/MsgLoaders/MsgCatalog/MsgCatalogLoader.hpp>
#elif defined (XML_USE_INMEM_MESSAGELOADER)
    #include <xercesc/util/MsgLoaders/InMemory/InMemMsgLoader.hpp>
#else
    #error Message loading service unknown by UnixWarePlatformUtils.cpp
#endif


#if defined (XML_USE_NETACCESSOR_LIBWWW)
    #include <xercesc/util/NetAccessors/libWWW/LibWWWNetAccessor.hpp>
#elif defined (XML_USE_NETACCESSOR_SOCKET)
    #include <xercesc/util/NetAccessors/Socket/SocketNetAccessor.hpp>
#endif

XERCES_CPP_NAMESPACE_BEGIN

// ---------------------------------------------------------------------------
//  XMLPlatformUtils: Private Static Methods
// ---------------------------------------------------------------------------

XMLNetAccessor* XMLPlatformUtils::makeNetAccessor()
{
#if defined (XML_USE_NETACCESSOR_LIBWWW)
    return new LibWWWNetAccessor();
#elif defined (XML_USE_NETACCESSOR_SOCKET)
    return new SocketNetAccessor();
#else
    return 0;
#endif
}



//
//  This method is called by the platform independent part of this class
//  when client code asks to have one of the supported message sets loaded.
//

XMLMsgLoader* XMLPlatformUtils::loadAMsgSet(const XMLCh* const msgDomain)
{
    XMLMsgLoader* retVal;
    try
    {
#if defined (XML_USE_ICU_MESSAGELOADER)
        retVal = new ICUMsgLoader(msgDomain);
#elif defined (XML_USE_ICONV_MESSAGELOADER)
        retVal = new MsgCatalogLoader(msgDomain);
#else
        retVal = new InMemMsgLoader(msgDomain);
#endif
    }
    catch(const OutOfMemoryException&)
    {
        throw;
    }
    catch(...)
    {
        panic(PanicHandler::Panic_CantLoadMsgDomain);
    }
    return retVal;
}

//
//  This method is called very early in the bootstrapping process. This guy
//  must create a transcoding service and return it. It cannot use any string
//  methods, any transcoding services, throw any exceptions, etc... It just
//  makes a transcoding service and returns it, or returns zero on failure.
//

XMLTransService* XMLPlatformUtils::makeTransService()
{
#if defined (XML_USE_ICU_TRANSCODER)

        return new ICUTransService;

#elif defined (XML_USE_ICONV_TRANSCODER)

    return new IconvTransService;

#else // Use Native transcoding service

    return new IconvTransService;

#endif
}


// ---------------------------------------------------------------------------
//  XMLPlatformUtils: The panic method
// ---------------------------------------------------------------------------
void XMLPlatformUtils::panic(const PanicReasons reason)
{
    fgUserPanicHandler? fgUserPanicHandler->panic(reason) : fgDefaultPanicHandler->panic(reason);
}

// ---------------------------------------------------------------------------
//  XMLPlatformUtils: File Methods
// ---------------------------------------------------------------------------
unsigned int XMLPlatformUtils::curFilePos(FileHandle theFile
                                          , MemoryManager* const manager)
{
    // Get the current position
    int curPos = ftell((FILE*) theFile);
    if (curPos == -1)
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotGetSize, manager);

    return (unsigned int)curPos;
}

void XMLPlatformUtils::closeFile(FileHandle theFile
                                 , MemoryManager* const manager)
{
    if (fclose((FILE*) theFile))
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotCloseFile, manager);
}

unsigned int XMLPlatformUtils::fileSize(FileHandle theFile
                                        , MemoryManager* const manager)
{
    // Get the current position
    long  int curPos = ftell((FILE*) theFile);
    if (curPos == -1)
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotGetCurPos, manager);

    // Seek to the end and save that value for return
	if (fseek((FILE*) theFile, 0, SEEK_END))
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotSeekToEnd, manager);

    long int retVal = ftell((FILE*) theFile);
    if (retVal == -1)
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotSeekToEnd, manager);

    // And put the pointer back
    if (fseek((FILE*) theFile, curPos, SEEK_SET))
        ThrowXMLwithMemMgr(XMLPlatformUtilsException,
                 XMLExcepts::File_CouldNotSeekToPos, manager);

    return (unsigned int)retVal;
}

FileHandle XMLPlatformUtils::openFile(const XMLCh* const fileName
                                      , MemoryManager* const manager)
{
    const char* tmpFileName = XMLString::transcode(fileName, manager);
    ArrayJanitor<char> janText((char*)tmpFileName, manager);
    FileHandle retVal = (FILE*)fopen( tmpFileName , "rb" );

    if (retVal == NULL)
        return 0;
    return retVal;
}

FileHandle XMLPlatformUtils::openFile(const char* const fileName
                                      , MemoryManager* const manager)
{
    FileHandle retVal = (FILE*)fopen( fileName , "rb" );

    if (retVal == NULL)
        return 0;
    return retVal;
}

FileHandle XMLPlatformUtils::openFileToWrite(const XMLCh* const fileName
                                             , MemoryManager* const manager)
{
    const char* tmpFileName = XMLString::transcode(fileName, manager);
    ArrayJanitor<char> janText((char*)tmpFileName, manager);
    return fopen( tmpFileName , "wb" );
}

FileHandle XMLPlatformUtils::openFileToWrite(const char* const fileName
                                             , MemoryManager* const manager)
{
    return fopen( fileName , "wb" );
}

FileHandle XMLPlatformUtils::openStdInHandle(MemoryManager* const manager)
{
	return (FileHandle)fdopen(dup(0), "rb");
}

unsigned int
XMLPlatformUtils::readFileBuffer( FileHandle          theFile
                               , const unsigned int      toRead
                               , XMLByte* const          toFill
                               , MemoryManager* const manager)
{
    size_t noOfItemsRead = fread((void*) toFill, 1, toRead, (FILE*) theFile);