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console.c
722 lines (596 loc) · 19.1 KB
/
console.c
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/*
* The Console API
*
* Copyright 1999 Antonio Linares <alinares@fivetech.com>
* Copyright 1999-2015 Viktor Szakats (vszakats.net/harbour) (hb_conNewLine(), DispOutAt(), hb_StrEOL())
* Copyright 1999 David G. Holm <dholm@jsd-llc.com>
* hb_conOutAlt(), hb_conOutDev(), DevOut(), hb_conDevPos(),
* DevPos(), __Eject(),
* hb_conOut(), hb_conOutErr(), OutErr(),
* hb_conOutStd(), OutStd(), PCol(), PRow(),
* SetPRC(), and hb_conInit()
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file LICENSE.txt. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#include "hbapi.h"
#include "hbapicdp.h"
#include "hbapiitm.h"
#include "hbapifs.h"
#include "hbapierr.h"
#include "hbapigt.h"
#include "hbstack.h"
#include "hbset.h"
#include "hb_io.h"
#if defined( HB_OS_WIN )
#include <windows.h>
#if defined( HB_OS_WIN_CE )
#include "hbwince.h"
#endif
#endif
/* NOTE: Some C compilers like Borland C optimize the call of small static buffers
* into an integer to read it faster. Later, programs like CodeGuard
* complain if the given buffer was smaller than an int. [ckedem]
*/
/* length of buffer for CR/LF characters */
#if ! defined( HB_OS_EOL_LEN ) || HB_OS_EOL_LEN < 4
# define CRLF_BUFFER_LEN 4
#else
# define CRLF_BUFFER_LEN HB_OS_EOL_LEN + 1
#endif
static const char s_szCR[] = { HB_CHAR_CR, 0 };
static const char s_szLF[] = { HB_CHAR_LF, 0 };
static const char s_szCRLF[] = { HB_CHAR_CR, HB_CHAR_LF, 0 };
#if defined( HB_OS_UNIX ) && ! defined( HB_EOL_CRLF )
static const char * s_szEOL = s_szLF;
static const int s_iEOLLen = 1;
#else
static const char * s_szEOL = s_szCRLF;
static const int s_iEOLLen = 2;
#endif
static HB_FHANDLE s_hFilenoStdin = ( HB_FHANDLE ) HB_STDIN_HANDLE;
static HB_FHANDLE s_hFilenoStdout = ( HB_FHANDLE ) HB_STDOUT_HANDLE;
static HB_FHANDLE s_hFilenoStderr = ( HB_FHANDLE ) HB_STDERR_HANDLE;
typedef struct
{
int row;
int col;
} HB_PRNPOS, * PHB_PRNPOS;
static HB_TSD_NEW( s_prnPos, sizeof( HB_PRNPOS ), NULL, NULL );
static PHB_PRNPOS hb_prnPos( void )
{
return ( PHB_PRNPOS ) hb_stackGetTSD( &s_prnPos );
}
void hb_conInit( void )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_conInit()" ) );
#if ! defined( HB_OS_WIN )
/* On Windows file handles with numbers 0, 1, 2 are
translated inside filesys to:
GetStdHandle( STD_INPUT_HANDLE ), GetStdHandle( STD_OUTPUT_HANDLE ),
GetStdHandle( STD_ERROR_HANDLE ) */
s_hFilenoStdin = fileno( stdin );
s_hFilenoStdout = fileno( stdout );
s_hFilenoStderr = fileno( stderr );
#endif
#ifdef HB_CLP_UNDOC
{
/* Undocumented CA-Cl*pper switch //STDERR:x */
int iStderr = hb_cmdargNum( "STDERR" );
if( iStderr == 0 || iStderr == 1 ) /* //STDERR with no parameter or 0 */
s_hFilenoStderr = s_hFilenoStdout;
/* disabled in default builds. It's not multi-platform and very
* dangerous because it can redirect error messages to data files
* [druzus]
*/
#ifdef HB_CLP_STRICT
else if( iStderr > 0 ) /* //STDERR:x */
s_hFilenoStderr = ( HB_FHANDLE ) iStderr;
#endif
}
#endif
/*
* Some compilers open stdout and stderr in text mode, but
* Harbour needs them to be open in binary mode.
*/
hb_fsSetDevMode( s_hFilenoStdin, FD_BINARY );
hb_fsSetDevMode( s_hFilenoStdout, FD_BINARY );
hb_fsSetDevMode( s_hFilenoStderr, FD_BINARY );
if( hb_gtInit( s_hFilenoStdin, s_hFilenoStdout, s_hFilenoStderr ) != HB_SUCCESS )
hb_errInternal( 9995, "Harbour terminal (GT) initialization failure", NULL, NULL );
if( hb_cmdargCheck( "INFO" ) )
{
hb_conOutErr( hb_gtVersion( 1 ), 0 );
hb_conOutErr( hb_conNewLine(), 0 );
}
}
void hb_conRelease( void )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_conRelease()" ) );
/*
* Clipper does not restore screen size on exit so I removed the code with:
* hb_gtSetMode( s_originalMaxRow + 1, s_originalMaxCol + 1 );
* If the low-level GT drive change some video adapter parameters which
* have to be restored on exit then it should does it in its Exit()
* method. Here we cannot force any actions because it may cause bad
* results in some GTs, e.g. when the screen size is controlled by remote
* user and not Harbour application (some terminal modes), [Druzus]
*/
hb_gtExit();
hb_fsSetDevMode( s_hFilenoStdin, FD_TEXT );
hb_fsSetDevMode( s_hFilenoStdout, FD_TEXT );
hb_fsSetDevMode( s_hFilenoStderr, FD_TEXT );
}
const char * hb_conNewLine( void )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_conNewLine()" ) );
return s_szEOL;
}
HB_FUNC( HB_EOL )
{
hb_retc_const( s_szEOL );
}
#if defined( HB_LEGACY_LEVEL4 )
/* Deprecated */
HB_FUNC( HB_OSNEWLINE )
{
hb_retc_const( s_szEOL );
}
#endif
HB_FUNC( HB_STREOL )
{
HB_SIZE nLen = hb_parclen( 1 );
HB_SIZE nCR = 0;
HB_SIZE nLF = 0;
const char * szEOL = s_szEOL;
if( nLen > 0 )
{
const char * szText = hb_parc( 1 );
do
{
switch( *szText++ )
{
case HB_CHAR_CR:
++nCR;
break;
case HB_CHAR_LF:
++nLF;
break;
}
}
while( --nLen );
if( nLF )
{
if( nCR == 0 )
szEOL = s_szLF;
else if( nCR == nLF )
szEOL = s_szCRLF;
}
else if( nCR )
szEOL = s_szCR;
}
hb_retc_const( szEOL );
}
/* Output an item to STDOUT */
void hb_conOutStd( const char * szStr, HB_SIZE nLen )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_conOutStd(%s, %" HB_PFS "u)", szStr, nLen ) );
if( nLen == 0 )
nLen = strlen( szStr );
if( nLen > 0 )
hb_gtOutStd( szStr, nLen );
}
/* Output an item to STDERR */
void hb_conOutErr( const char * szStr, HB_SIZE nLen )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_conOutErr(%s, %" HB_PFS "u)", szStr, nLen ) );
if( nLen == 0 )
nLen = strlen( szStr );
if( nLen > 0 )
hb_gtOutErr( szStr, nLen );
}
/* Output an item to the screen and/or printer and/or alternate */
void hb_conOutAlt( const char * szStr, HB_SIZE nLen )
{
PHB_FILE pFile;
HB_TRACE( HB_TR_DEBUG, ( "hb_conOutAlt(%s, %" HB_PFS "u)", szStr, nLen ) );
if( hb_setGetConsole() )
hb_gtWriteCon( szStr, nLen );
if( hb_setGetAlternate() && ( pFile = hb_setGetAltHan() ) != NULL )
{
/* Print to alternate file if SET ALTERNATE ON and valid alternate file */
hb_fileWrite( pFile, szStr, nLen, -1 );
}
if( ( pFile = hb_setGetExtraHan() ) != NULL )
{
/* Print to extra file if valid alternate file */
hb_fileWrite( pFile, szStr, nLen, -1 );
}
if( ( pFile = hb_setGetPrinterHandle( HB_SET_PRN_CON ) ) != NULL )
{
/* Print to printer if SET PRINTER ON and valid printer file */
hb_fileWrite( pFile, szStr, nLen, -1 );
hb_prnPos()->col += ( int ) nLen;
}
}
/* Output an item to the screen and/or printer */
static void hb_conOutDev( const char * szStr, HB_SIZE nLen )
{
PHB_FILE pFile;
HB_TRACE( HB_TR_DEBUG, ( "hb_conOutDev(%s, %" HB_PFS "u)", szStr, nLen ) );
if( ( pFile = hb_setGetPrinterHandle( HB_SET_PRN_DEV ) ) != NULL )
{
/* Display to printer if SET DEVICE TO PRINTER and valid printer file */
hb_fileWrite( pFile, szStr, nLen, -1 );
hb_prnPos()->col += ( int ) nLen;
}
else
/* Otherwise, display to console */
hb_gtWrite( szStr, nLen );
}
static char * hb_itemStringCon( PHB_ITEM pItem, HB_SIZE * pnLen, HB_BOOL * pfFreeReq )
{
/* logical values in device output (not console, stdout or stderr) are
shown as single letter */
if( HB_IS_LOGICAL( pItem ) )
{
*pnLen = 1;
*pfFreeReq = HB_FALSE;
return ( char * ) ( hb_itemGetL( pItem ) ? "T" : "F" );
}
return hb_itemString( pItem, pnLen, pfFreeReq );
}
HB_FUNC( OUTSTD ) /* writes a list of values to the standard output device */
{
int iPCount = hb_pcount(), iParam;
for( iParam = 1; iParam <= iPCount; iParam++ )
{
char * pszString;
HB_SIZE nLen;
HB_BOOL fFree;
if( iParam > 1 )
hb_conOutStd( " ", 1 );
pszString = hb_itemString( hb_param( iParam, HB_IT_ANY ), &nLen, &fFree );
if( nLen )
hb_conOutStd( pszString, nLen );
if( fFree )
hb_xfree( pszString );
}
}
HB_FUNC( OUTERR ) /* writes a list of values to the standard error device */
{
int iPCount = hb_pcount(), iParam;
for( iParam = 1; iParam <= iPCount; iParam++ )
{
char * pszString;
HB_SIZE nLen;
HB_BOOL fFree;
if( iParam > 1 )
hb_conOutErr( " ", 1 );
pszString = hb_itemString( hb_param( iParam, HB_IT_ANY ), &nLen, &fFree );
if( nLen )
hb_conOutErr( pszString, nLen );
if( fFree )
hb_xfree( pszString );
}
}
HB_FUNC( QQOUT ) /* writes a list of values to the current device (screen or printer) and is affected by SET ALTERNATE */
{
int iPCount = hb_pcount(), iParam;
for( iParam = 1; iParam <= iPCount; iParam++ )
{
char * pszString;
HB_SIZE nLen;
HB_BOOL fFree;
if( iParam > 1 )
hb_conOutAlt( " ", 1 );
pszString = hb_itemString( hb_param( iParam, HB_IT_ANY ), &nLen, &fFree );
if( nLen )
hb_conOutAlt( pszString, nLen );
if( fFree )
hb_xfree( pszString );
}
}
HB_FUNC( QOUT )
{
PHB_FILE pFile;
hb_conOutAlt( s_szEOL, s_iEOLLen );
if( ( pFile = hb_setGetPrinterHandle( HB_SET_PRN_CON ) ) != NULL )
{
PHB_PRNPOS pPrnPos = hb_prnPos();
pPrnPos->row++;
pPrnPos->col = hb_setGetMargin();
if( pPrnPos->col )
{
char buf[ 256 ];
if( pPrnPos->col > ( int ) sizeof( buf ) )
{
char * pBuf = ( char * ) hb_xgrab( pPrnPos->col );
memset( pBuf, ' ', pPrnPos->col );
hb_fileWrite( pFile, pBuf, ( HB_USHORT ) pPrnPos->col, -1 );
hb_xfree( pBuf );
}
else
{
memset( buf, ' ', pPrnPos->col );
hb_fileWrite( pFile, buf, ( HB_USHORT ) pPrnPos->col, -1 );
}
}
}
HB_FUNC_EXEC( QQOUT );
}
HB_FUNC( __EJECT ) /* Ejects the current page from the printer */
{
PHB_PRNPOS pPrnPos;
PHB_FILE pFile;
if( ( pFile = hb_setGetPrinterHandle( HB_SET_PRN_ANY ) ) != NULL )
{
static const char s_szEop[ 4 ] = { 0x0C, 0x0D, 0x00, 0x00 }; /* Buffer is 4 bytes to make CodeGuard happy */
hb_fileWrite( pFile, s_szEop, 2, -1 );
}
pPrnPos = hb_prnPos();
pPrnPos->row = pPrnPos->col = 0;
}
HB_FUNC( PROW ) /* Returns the current printer row position */
{
hb_retni( ( int ) hb_prnPos()->row );
}
HB_FUNC( PCOL ) /* Returns the current printer row position */
{
hb_retni( ( int ) hb_prnPos()->col );
}
static void hb_conDevPos( int iRow, int iCol )
{
PHB_FILE pFile;
HB_TRACE( HB_TR_DEBUG, ( "hb_conDevPos(%d, %d)", iRow, iCol ) );
/* Position printer if SET DEVICE TO PRINTER and valid printer file
otherwise position console */
if( ( pFile = hb_setGetPrinterHandle( HB_SET_PRN_DEV ) ) != NULL )
{
int iPRow = iRow;
int iPCol = iCol + hb_setGetMargin();
PHB_PRNPOS pPrnPos = hb_prnPos();
if( pPrnPos->row != iPRow || pPrnPos->col != iPCol )
{
char buf[ 256 ];
int iPtr = 0;
if( pPrnPos->row != iPRow )
{
if( ++pPrnPos->row > iPRow )
{
memcpy( &buf[ iPtr ], "\x0C\x0D\x00\x00", 2 ); /* Source buffer is 4 bytes to make CodeGuard happy */
iPtr += 2;
pPrnPos->row = 0;
}
else
{
memcpy( &buf[ iPtr ], s_szEOL, s_iEOLLen );
iPtr += s_iEOLLen;
}
while( pPrnPos->row < iPRow )
{
if( iPtr + s_iEOLLen > ( int ) sizeof( buf ) )
{
hb_fileWrite( pFile, buf, ( HB_USHORT ) iPtr, -1 );
iPtr = 0;
}
memcpy( &buf[ iPtr ], s_szEOL, s_iEOLLen );
iPtr += s_iEOLLen;
++pPrnPos->row;
}
pPrnPos->col = 0;
}
else if( pPrnPos->col > iPCol )
{
buf[ iPtr++ ] = '\x0D';
pPrnPos->col = 0;
}
while( pPrnPos->col < iPCol )
{
if( iPtr == ( int ) sizeof( buf ) )
{
hb_fileWrite( pFile, buf, ( HB_USHORT ) iPtr, -1 );
iPtr = 0;
}
buf[ iPtr++ ] = ' ';
++pPrnPos->col;
}
if( iPtr )
hb_fileWrite( pFile, buf, ( HB_USHORT ) iPtr, -1 );
}
}
else
hb_gtSetPos( iRow, iCol );
}
/* NOTE: This should be placed after the hb_conDevPos() definition. */
HB_FUNC( DEVPOS ) /* Sets the screen and/or printer position */
{
if( HB_ISNUM( 1 ) && HB_ISNUM( 2 ) )
hb_conDevPos( hb_parni( 1 ), hb_parni( 2 ) );
#if defined( HB_CLP_UNDOC )
/* NOTE: Both 5.2e and 5.3 does that, while the documentation
says it will return NIL. [vszakats] */
hb_itemReturn( hb_param( 1, HB_IT_ANY ) );
#endif
}
HB_FUNC( SETPRC ) /* Sets the current printer row and column positions */
{
if( hb_pcount() == 2 && HB_ISNUM( 1 ) && HB_ISNUM( 2 ) )
{
PHB_PRNPOS pPrnPos = hb_prnPos();
pPrnPos->row = hb_parni( 1 );
pPrnPos->col = hb_parni( 2 );
}
}
HB_FUNC( DEVOUT ) /* writes a single value to the current device (screen or printer), but is not affected by SET ALTERNATE */
{
char * pszString;
HB_SIZE nLen;
HB_BOOL fFree;
if( HB_ISCHAR( 2 ) )
{
char szOldColor[ HB_CLRSTR_LEN ];
hb_gtGetColorStr( szOldColor );
hb_gtSetColorStr( hb_parc( 2 ) );
pszString = hb_itemStringCon( hb_param( 1, HB_IT_ANY ), &nLen, &fFree );
if( nLen )
hb_conOutDev( pszString, nLen );
if( fFree )
hb_xfree( pszString );
hb_gtSetColorStr( szOldColor );
}
else if( hb_pcount() >= 1 )
{
pszString = hb_itemStringCon( hb_param( 1, HB_IT_ANY ), &nLen, &fFree );
if( nLen )
hb_conOutDev( pszString, nLen );
if( fFree )
hb_xfree( pszString );
}
}
HB_FUNC( DISPOUT ) /* writes a single value to the screen, but is not affected by SET ALTERNATE */
{
char * pszString;
HB_SIZE nLen;
HB_BOOL bFreeReq;
if( HB_ISCHAR( 2 ) )
{
char szOldColor[ HB_CLRSTR_LEN ];
hb_gtGetColorStr( szOldColor );
hb_gtSetColorStr( hb_parc( 2 ) );
pszString = hb_itemStringCon( hb_param( 1, HB_IT_ANY ), &nLen, &bFreeReq );
hb_gtWrite( pszString, nLen );
if( bFreeReq )
hb_xfree( pszString );
hb_gtSetColorStr( szOldColor );
}
else if( hb_pcount() >= 1 )
{
pszString = hb_itemStringCon( hb_param( 1, HB_IT_ANY ), &nLen, &bFreeReq );
hb_gtWrite( pszString, nLen );
if( bFreeReq )
hb_xfree( pszString );
}
}
/* Undocumented Clipper function */
/* NOTE: Clipper does no checks about the screen positions. [vszakats] */
HB_FUNC( DISPOUTAT ) /* writes a single value to the screen at specific position, but is not affected by SET ALTERNATE */
{
char * pszString;
HB_SIZE nLen;
HB_BOOL bFreeReq;
if( HB_ISCHAR( 4 ) )
{
char szOldColor[ HB_CLRSTR_LEN ];
hb_gtGetColorStr( szOldColor );
hb_gtSetColorStr( hb_parc( 4 ) );
pszString = hb_itemStringCon( hb_param( 3, HB_IT_ANY ), &nLen, &bFreeReq );
hb_gtWriteAt( hb_parni( 1 ), hb_parni( 2 ), pszString, nLen );
if( bFreeReq )
hb_xfree( pszString );
hb_gtSetColorStr( szOldColor );
}
else if( hb_pcount() >= 3 )
{
pszString = hb_itemStringCon( hb_param( 3, HB_IT_ANY ), &nLen, &bFreeReq );
hb_gtWriteAt( hb_parni( 1 ), hb_parni( 2 ), pszString, nLen );
if( bFreeReq )
hb_xfree( pszString );
}
}
/* Harbour extension, works like DispOutAt() but does not change cursor position */
HB_FUNC( HB_DISPOUTAT )
{
if( hb_pcount() >= 3 )
{
char * pszString;
HB_SIZE nLen;
HB_BOOL bFreeReq;
int iColor;
pszString = hb_itemStringCon( hb_param( 3, HB_IT_ANY ), &nLen, &bFreeReq );
if( HB_ISCHAR( 4 ) )
iColor = hb_gtColorToN( hb_parc( 4 ) );
else if( HB_ISNUM( 4 ) )
iColor = hb_parni( 4 );
else
iColor = -1;
hb_gtPutText( hb_parni( 1 ), hb_parni( 2 ), pszString, nLen, iColor );
if( bFreeReq )
hb_xfree( pszString );
}
}
/* Same as hb_DispOutAt(), but draws with the attribute HB_GT_ATTR_BOX,
so we can use it to draw graphical elements. */
HB_FUNC( HB_DISPOUTATBOX )
{
HB_SIZE nLen = hb_parclen( 3 );
if( nLen > 0 )
{
int iRow = hb_parni( 1 );
int iCol = hb_parni( 2 );
const char * pszString = hb_parc( 3 );
int iColor;
PHB_CODEPAGE cdp;
HB_SIZE nIndex = 0;
HB_WCHAR wc;
if( HB_ISCHAR( 4 ) )
iColor = hb_gtColorToN( hb_parc( 4 ) );
else if( HB_ISNUM( 4 ) )
iColor = hb_parni( 4 );
else
iColor = hb_gtGetCurrColor();
cdp = hb_gtBoxCP();
while( HB_CDPCHAR_GET( cdp, pszString, nLen, &nIndex, &wc ) )
hb_gtPutChar( iRow, iCol++, iColor, HB_GT_ATTR_BOX, wc );
hb_gtFlush();
}
}
HB_FUNC( HB_GETSTDIN ) /* Return handle for STDIN */
{
hb_retnint( ( HB_NHANDLE ) s_hFilenoStdin );
}
HB_FUNC( HB_GETSTDOUT ) /* Return handle for STDOUT */
{
hb_retnint( ( HB_NHANDLE ) s_hFilenoStdout );
}
HB_FUNC( HB_GETSTDERR ) /* Return handle for STDERR */
{
hb_retnint( ( HB_NHANDLE ) s_hFilenoStderr );
}