180 lines
5.0 KiB
Plaintext
180 lines
5.0 KiB
Plaintext
/*
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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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* Harbour level definition of keyboard mapping
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*
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* Copyright 2003 Ryszard Glab <rglab@imid.med.pl>
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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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/*
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Load user specified keymap which was specified as a command line argument
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//KEYMAP:full_path_to_file
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The keymap file should contine definitions of byte sequences that should be
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translated into a single INKEY() value - a single line for a single
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inkey code (see include/inkey.ch for valid INKEY codes\\\\\0.
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Additionally it can contain "CLEAR' keyword to clear default keymaps
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Format of file
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[CLEAR]
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<inkey_code>:<sequence>
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Example:
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CLEAR
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//Ctrl-Pgup
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31:\033]5^
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//Ctrl-PgDn
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30:\033]6^
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Keycodes can contain:
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octal codes \012 (three digits)
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or:
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hex codes \x0F
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or:
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if you need a backslash then use '\\'
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*/
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PROCEDURE HB_GT_KEYMAP( cFile )
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LOCAL cKeymap, i, nKeys, cLine, nPos, nKey, nLen
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LOCAL j, cCode, cChar, cChar2, nAsc
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IF( EMPTY(cFile) )
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cFile = HB_ARGSTRING( "KEYMAP" )
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ENDIF
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IF( !EMPTY(cFile) )
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cKeymap := MEMOREAD( cFile )
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IF( !EMPTY(cKeymap) )
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nKeys := MLCOUNT( cKeymap )
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FOR i:=1 TO nKeys
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cLine := ALLTRIM( MEMOLINE( cKeymap, 196, i ) )
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IF( !EMPTY(cLine) )
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IF( cLine = '//' )
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ELSEIF( UPPER(cLine) = 'CLEAR' )
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HB_GT_ADDKEYMAP(0) // Clear all default keymaps
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ELSEIF((nPos:=AT(':',cLine)) > 0 )
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nKey := VAL( LEFT( cLine, nPos-1 ) )
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cLine := SUBSTR( cLine, nPos+1 )
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j :=1
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nLen := LEN(cLine)
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cCode := ""
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DO WHILE( j <= nLen )
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cChar := SUBSTR( cLine, j, 1 )
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cChar2 := SUBSTR(cLine,j+1,1)
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IF( cChar == '\' .and. cChar2 $ '0123' )
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//OCTAL NUMBER < 377 (255 decimal)
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nAsc := Octal2Num(SUBSTR(cLine,j+1,3) )
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IF( nAsc >= 0 )
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cCode += CHR( nAsc )
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ELSE
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cCode := ""
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EXIT //ignore errorneous code
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ENDIF
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j += 4
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ELSEIF( cChar2 == 'X' .OR. cChar2 == 'x' )
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//Hex number
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nAsc := Hex2Num( SUBSTR(cLine, j+2, 2 ) )
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IF( nAsc >=0 )
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cCode += CHR( nAsc )
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ELSE
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cCode := ""
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EXIT //ignore errorneous code
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ENDIF
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j += 4
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ELSEIF( cChar2 == '\' )
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cCode += '\'
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j += 2
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ELSE
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cCode += cChar
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++j
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ENDIF
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ENDDO
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IF( !EMPTY(cCode) .AND. nKey != 0 )
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HB_GT_ADDKEYMAP( nKey, cCode )
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ENDIF
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ENDIF
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ENDIF
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NEXT
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ENDIF
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ENDIF
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RETURN
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//
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STATIC FUNCTION Octal2Num( cOctal )
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LOCAL i, c, nMult:=1, nVal:=0
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FOR i:=0 TO 2
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c := SUBSTR( cOctal, 3-i, 1 )
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IF( c $ '01234567' )
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nVal += ((ASC( c ) - ASC( '0' )) * nMult)
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nMult *= 8
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ELSE
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RETURN -1
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ENDIF
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NEXT
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RETURN nVal
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STATIC FUNCTION Hex2Num( cOctal )
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LOCAL i, c, nMult:=1, nVal:=0
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FOR i:=0 TO 1
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c := SUBSTR( cOctal, 2-i, 1 )
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IF( c $ '01234567' )
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nVal += ((ASC( c ) - ASC( '0' )) * nMult)
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ELSEIF( c $ 'ABCDEF' )
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nVal += ((ASC( c ) - ASC( 'A' ) + 10 ) * nMult)
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ELSE
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RETURN -1
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ENDIF
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nMult *= 16
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NEXT
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RETURN nVal
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