293 lines
8.4 KiB
C
293 lines
8.4 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* The CodePages API
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*
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* Copyright 2002 Alexander S.Kresin <alex@belacy.belgorod.su>
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbapi.h"
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#include "hbapicdp.h"
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#define HB_CDP_MAX_ 64
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static HB_CODEPAGE s_en_codepage = { "EN",0,NULL,NULL,0,NULL,NULL,NULL };
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static PHB_CODEPAGE s_cdpList[ HB_CDP_MAX_ ];
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PHB_CODEPAGE s_cdpage = &s_en_codepage;
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static int hb_cdpFindPos( char * pszID )
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{
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int iPos;
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if( pszID != NULL )
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{
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for( iPos = 0; iPos < HB_CDP_MAX_ && s_cdpList[iPos]; iPos++ )
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{
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if( strcmp( s_cdpList[ iPos ]->id, pszID ) == 0 )
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return iPos;
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}
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}
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return -1;
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}
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BOOL hb_cdpRegister( PHB_CODEPAGE cdpage )
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{
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HB_TRACE(HB_TR_DEBUG, ("hb_codepageRegister(%p)", cdpage));
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if( cdpage )
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{
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int iPos = hb_cdpFindPos( cdpage->id );
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if( iPos == -1 )
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{
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for( iPos = 0; iPos < HB_CDP_MAX_; iPos++ )
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{
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if( !s_cdpList[ iPos ] )
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{
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int i, iu, il, iumax = 0, ilmax = 0;
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char *ptrUpper = cdpage->CharsUpper;
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char *ptrLower = cdpage->CharsLower;
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char *ptr;
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s_cdpList[ iPos ] = cdpage;
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cdpage->lSort = FALSE;
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if( cdpage->nChars )
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{
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cdpage->s_chars = (BYTE*) hb_xgrab(256);
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cdpage->s_upper = (BYTE*) hb_xgrab(256);
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cdpage->s_lower = (BYTE*) hb_xgrab(256);
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for( i=0; i<256; i++ )
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{
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cdpage->s_chars[i] = 0;
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cdpage->s_upper[i] = toupper( (BYTE) i&255 );
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cdpage->s_lower[i] = tolower( (BYTE) i&255 );
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}
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for( i=1; *ptrUpper; i++,ptrUpper++,ptrLower++ )
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{
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if( *ptrUpper == '=' )
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{
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for( ptr=ptrUpper+1; *ptr; ptr++ )
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*(ptr-1) = *ptr;
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*(ptr-1) = '\0';
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for( ptr=ptrLower+1; *ptr; ptr++ )
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*(ptr-1) = *ptr;
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*(ptr-1) = '\0';
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i--;
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}
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else if( *ptrUpper == '.' )
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{
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}
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iu = (((int)*ptrUpper)&255);
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cdpage->s_chars[ iu ] = i;
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il = (((int)*ptrLower)&255);
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cdpage->s_chars[ il ] = i+cdpage->nChars;
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if( iu < iumax || il < ilmax )
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cdpage->lSort = TRUE;
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iumax = iu; ilmax = il;
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iu = ((int)(*ptrLower))&255;
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cdpage->s_upper[iu] = *ptrUpper;
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il = ((int)(*ptrUpper))&255;
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cdpage->s_lower[il] = *ptrLower;
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}
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}
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// printf( "\n%s %d",s_cdpage->id,s_cdpage->lSort );
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return TRUE;
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}
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}
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}
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}
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return FALSE;
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}
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PHB_CODEPAGE hb_cdpFind( char * pszID )
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{
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int iPos;
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HB_TRACE(HB_TR_DEBUG, ("hb_cdpFind(%s)", pszID));
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iPos = hb_cdpFindPos( pszID );
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return ( iPos != -1 ) ? s_cdpList[ iPos ] : NULL;
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}
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PHB_CODEPAGE hb_cdpSelect( PHB_CODEPAGE cdpage )
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{
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PHB_CODEPAGE cdpOld = s_cdpage;
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HB_TRACE(HB_TR_DEBUG, ("hb_langSelect(%p)", cdpage));
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if( cdpage )
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s_cdpage = cdpage;
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return cdpOld;
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}
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char * hb_cdpSelectID( char * pszID )
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{
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char * pszIDOld = s_cdpage->id;
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HB_TRACE(HB_TR_DEBUG, ("hb_cdpSelectID(%s)", pszID));
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hb_cdpSelect( hb_cdpFind( pszID ) );
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return pszIDOld;
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}
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void hb_cdpTranslate( char* psz, PHB_CODEPAGE cdpIn, PHB_CODEPAGE cdpOut )
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{
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int n;
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if( cdpIn != cdpOut && cdpIn->nChars == cdpOut->nChars )
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{
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for( ; *psz; psz++ )
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{
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if( ( n = (int)cdpIn->s_chars[ ((int)*psz)&255 ] ) != 0 )
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{
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n--;
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*psz = ( n>=cdpOut->nChars )?
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cdpOut->CharsLower[n-cdpOut->nChars]:cdpOut->CharsUpper[n];
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}
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}
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}
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}
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void hb_cdpnTranslate( char* psz, PHB_CODEPAGE cdpIn, PHB_CODEPAGE cdpOut, unsigned int nChars )
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{
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int n;
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unsigned int i;
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if( cdpIn != cdpOut && cdpIn->nChars == cdpOut->nChars )
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for( i=0; i<nChars; i++,psz++ )
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{
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if( ( n = (int)cdpIn->s_chars[ ((int)*psz)&255 ] ) != 0 )
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{
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n--;
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*psz = ( n>=cdpOut->nChars )?
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cdpOut->CharsLower[n-cdpOut->nChars]:cdpOut->CharsUpper[n];
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}
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}
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}
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int hb_cdpcmp( char* szFirst, char* szSecond, int iLen, PHB_CODEPAGE cdpage )
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{
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int i, iRet = 0, n1, n2;
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// printf( "\nhb_cdpcmp-0 %s %s",szFirst,szSecond );
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for( i=0; i<iLen; i++,szFirst++,szSecond++ )
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if( *szFirst != *szSecond )
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{
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if( ( n1 = (int)cdpage->s_chars[ ((int)*szFirst)&255 ] ) == 0 ||
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( n2 = (int)cdpage->s_chars[ ((int)*szSecond)&255 ] ) == 0 )
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iRet = ( *szFirst < *szSecond )? -1 : 1;
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else
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iRet = ( n1 < n2 )? -1 : 1;
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break;
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}
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// printf( " : %d",iRet );
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return iRet;
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}
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void hb_cdpReleaseAll( void )
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{
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int iPos = 0;
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while( iPos < HB_CDP_MAX_ && s_cdpList[iPos] )
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{
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if( s_cdpList[ iPos ]->s_chars )
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hb_xfree( s_cdpList[ iPos ]->s_chars );
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if( s_cdpList[ iPos ]->s_upper )
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hb_xfree( s_cdpList[ iPos ]->s_upper );
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if( s_cdpList[ iPos ]->s_lower )
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hb_xfree( s_cdpList[ iPos ]->s_lower );
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iPos ++;
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}
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}
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HB_FUNC( HB_SETCODEPAGE )
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{
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hb_retc( s_cdpage->id );
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if( ISCHAR(1) )
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hb_cdpSelectID( hb_parc( 1 ) );
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}
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HB_FUNC( HB_TRANSLATE )
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{
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char *szResult;
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char *szIn = hb_parc(1);
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char *szIdIn = hb_parc(2);
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char *szIdOut = hb_parc(3);
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int ilen;
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PHB_CODEPAGE cdpIn;
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PHB_CODEPAGE cdpOut;
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if( szIn )
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{
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ilen = hb_parclen(1);
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cdpIn = ( szIdIn )? hb_cdpFind( szIdIn ):s_cdpage;
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cdpOut = ( szIdOut )? hb_cdpFind( szIdOut ):s_cdpage;
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szResult = (char*) hb_xgrab( ilen + 1 );
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memcpy( szResult, szIn, ilen );
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hb_cdpTranslate( szResult, cdpIn, cdpOut );
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hb_retc_buffer( szResult );
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}
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else
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hb_retc( "" );
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}
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HB_CALL_ON_STARTUP_BEGIN( hb_codepage_Init_EN )
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hb_cdpRegister( &s_en_codepage );
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HB_CALL_ON_STARTUP_END( hb_codepage_Init_EN )
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#if ! defined(__GNUC__) && ! defined(_MSC_VER)
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#pragma startup hb_codepage_Init_EN
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#endif
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