iconv390transservice.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 607 行 · 第 1/2 页

/*
 * 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.
 */

/*
 * $Id: Iconv390TransService.cpp,v 1.10 2004/09/08 13:56:45 peiyongz Exp $
 */


// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include "Iconv390TransService.hpp"
#include <xercesc/util/XMLUniDefs.hpp>
#include <xercesc/util/XMLUni.hpp>
#include <xercesc/util/regx/XMLUniCharacter.hpp>
#include <xercesc/framework/MemoryManager.hpp>

#include <wchar.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

#ifdef OS390BATCH
#include <unistd.h>
#endif
#include <ctype.h>

XERCES_CPP_NAMESPACE_BEGIN

//
//  Cannot use the OS/390 c/c++ towupper and towlower functions in the
//  Unicode environment. We will use mytowupper and mytowlower here.
//
#undef towupper
#undef towlower
#define towupper mytowupper
#define towlower mytowlower

// ---------------------------------------------------------------------------
//  Local, const data
// ---------------------------------------------------------------------------
static const int gTempBuffArraySize = 1024;
static const XMLCh  gMyServiceId[] =
{
    chLatin_I, chLatin_C, chLatin_o, chLatin_n, chLatin_v, chNull
};
// ---------------------------------------------------------------------------
//  gUnicodeToIBM037XlatTable
//      This is the translation table for Unicode to ibm-037. This table
//      contains 255 entries.
// ---------------------------------------------------------------------------
static const XMLByte gUnicodeToIBM037XlatTable[256] =
{
        0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F
    ,   0x16, 0x05, 0x25, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F
    ,   0x10, 0x11, 0x12, 0x13, 0x3C, 0x3D, 0x32, 0x26
    ,   0x18, 0x19, 0x3F, 0x27, 0x1C, 0x1D, 0x1E, 0x1F
    ,   0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D
    ,   0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61
    ,   0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7
    ,   0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F
    ,   0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7
    ,   0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6
    ,   0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6
    ,   0xE7, 0xE8, 0xE9, 0xBA, 0xE0, 0xBB, 0xB0, 0x6D
    ,   0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87
    ,   0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96
    ,   0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6
    ,   0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07
    ,   0x20, 0x21, 0x22, 0x23, 0x24, 0x15, 0x06, 0x17
    ,   0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x09, 0x0A, 0x1B
    ,   0x30, 0x31, 0x1A, 0x33, 0x34, 0x35, 0x36, 0x08
    ,   0x38, 0x39, 0x3A, 0x3B, 0x04, 0x14, 0x3E, 0xFF
    ,   0x41, 0xAA, 0x4A, 0xB1, 0x9F, 0xB2, 0x6A, 0xB5
    ,   0xBD, 0xB4, 0x9A, 0x8A, 0x5F, 0xCA, 0xAF, 0xBC
    ,   0x90, 0x8F, 0xEA, 0xFA, 0xBE, 0xA0, 0xB6, 0xB3
    ,   0x9D, 0xDA, 0x9B, 0x8B, 0xB7, 0xB8, 0xB9, 0xAB
    ,   0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9E, 0x68
    ,   0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77
    ,   0xAC, 0x69, 0xED, 0xEE, 0xEB, 0xEF, 0xEC, 0xBF
    ,   0x80, 0xFD, 0xFE, 0xFB, 0xFC, 0xAD, 0xAE, 0x59
    ,   0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9C, 0x48
    ,   0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57
    ,   0x8C, 0x49, 0xCD, 0xCE, 0xCB, 0xCF, 0xCC, 0xE1
    ,   0x70, 0xDD, 0xDE, 0xDB, 0xDC, 0x8D, 0x8E, 0xDF
};
iconvconverter * converterList;
XMLMutex  converterListMutex;

iconvconverter * addConverter(const char* const EncodingName
                             ,XMLTransService::Codes& resValue)
{
    XMLMutexLock lockConverterlist(&converterListMutex);
    iconvconverter *tconv=converterList;
    while ( (tconv) &&
            (strcmp(tconv->name,EncodingName)) )
      tconv = tconv->nextconverter;

    if (tconv) {
      tconv->usecount++;
    }
    else {
      tconv = new iconvconverter;
      strcpy(tconv->name,EncodingName);
      tconv->usecount=1;
      tconv->fIconv390Descriptor = iconv_open("UCS-2",EncodingName);
      if (tconv->fIconv390Descriptor == (iconv_t)(-1)) {
         resValue = XMLTransService::UnsupportedEncoding;
         delete tconv;
         return 0;
      }
      tconv->nextconverter = converterList;
      converterList = tconv;
    }
    return tconv;
}

void removeConverter(iconvconverter* const converter)
{
    iconvconverter *pconv,*tconv;
    tconv = 0;
    if (converter) {
      XMLMutexLock lockConverterlist(&converterListMutex);
      if (--converter->usecount==0) {
        tconv = converterList;
        pconv = (iconvconverter*)&converterList;
        while ( (tconv) && (tconv!=converter) ) {
          pconv=tconv;
          tconv=tconv->nextconverter;
        }

        pconv->nextconverter=tconv->nextconverter;
      }
    }

    if (tconv) {
      iconv_close(tconv->fIconv390Descriptor);
      delete tconv;
    }
}

// ---------------------------------------------------------------------------
//  Local methods
// ---------------------------------------------------------------------------
static unsigned int  getWideCharLength(const XMLCh* const src)
{
    if (!src)
        return 0;

    unsigned int len = 0;
    const XMLCh* pTmp = src;
    while (*pTmp++)
        len++;
    return len;
}

// ---------------------------------------------------------------------------
//  Iconv390TransService: Constructors and Destructor
// ---------------------------------------------------------------------------
Iconv390TransService::Iconv390TransService()
{
}

Iconv390TransService::~Iconv390TransService()
{
}


// ---------------------------------------------------------------------------
//  Iconv390TransService: The virtual transcoding service API
// ---------------------------------------------------------------------------
int Iconv390TransService::compareIString(  const   XMLCh* const    comp1
                                           , const XMLCh* const    comp2)
{
    const XMLCh* cptr1 = comp1;
    const XMLCh* cptr2 = comp2;

    while ( (*cptr1 != 0) && (*cptr2 != 0) )
    {
        wint_t wch1 = towupper(*cptr1);
        wint_t wch2 = towupper(*cptr2);
        if (wch1 != wch2)
            break;

        cptr1++;
        cptr2++;
    }
    return (int) ( towupper(*cptr1) - towupper(*cptr2) );
}

int Iconv390TransService::compareNIString( const   XMLCh* const    comp1
                                           , const XMLCh* const    comp2
                                           , const unsigned int    maxChars)
{
    unsigned int  n = 0;
    const XMLCh* cptr1 = comp1;
    const XMLCh* cptr2 = comp2;

    while (true && maxChars)
    {
        wint_t wch1 = towupper(*cptr1);
        wint_t wch2 = towupper(*cptr2);

        if (wch1 != wch2)
            return (int) (wch1 - wch2);

        // If either ended, then both ended, so equal
        if (!*cptr1 || !*cptr2)
            break;

        cptr1++;
        cptr2++;

        //  Bump the count of chars done. If it equals the count then we
        //  are equal for the requested count, so break out and return
        //  equal.
        n++;
        if (n == maxChars)
            break;
    }

    return 0;
}

const XMLCh* Iconv390TransService::getId() const
{
    return gMyServiceId;
}

bool Iconv390TransService::isSpace(const XMLCh toCheck) const
{
   unsigned short chartype = XMLUniCharacter::getType(toCheck);
   if ( (chartype == XMLUniCharacter::SPACE_SEPARATOR) ||
        (chartype == XMLUniCharacter::LINE_SEPARATOR)   ||
        (chartype == XMLUniCharacter::PARAGRAPH_SEPARATOR) )
      return true;
   else
      return false;
}


XMLLCPTranscoder* Iconv390TransService::makeNewLCPTranscoder()
{
    XMLTransService::Codes resValue;
    // native MVS default code page is IBM-037
    iconvconverter *tconv=addConverter("IBM-037",resValue);

    if (tconv == 0) {
        return 0;
    }

    return new Iconv390LCPTranscoder(tconv);
}

bool Iconv390TransService::supportsSrcOfs() const
{
    return true;
}


// ---------------------------------------------------------------------------
//  Iconv390TransService: The protected virtual transcoding service API
// ---------------------------------------------------------------------------
XMLTranscoder*
Iconv390TransService::makeNewXMLTranscoder(const   XMLCh* const            encodingName
                                        ,       XMLTransService::Codes& resValue
                                        , const unsigned int
                                        ,       MemoryManager* const)
{
    //  This is a minimalist transcoding service, that only supports a local
    //  default transcoder. All named encodings return zero as a failure,
    //  which means that only the intrinsic encodings supported by the parser
    //  itself will work for XML data.
    //
    resValue = XMLTransService::UnsupportedEncoding;
    return 0;
}

void Iconv390TransService::upperCase(XMLCh* const toUpperCase) const
{
    XMLCh* outPtr = toUpperCase;
    while (*outPtr != 0) {
	if ((*outPtr >= 0x61) && (*outPtr <= 0x7A))
	    *outPtr = *outPtr - 0x20;
	outPtr++;
    }
}

void Iconv390TransService::lowerCase(XMLCh* const toLowerCase) const
{
    XMLCh* outPtr = toLowerCase;