102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/*
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* $Id$
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*/
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/* File......: CHDIR.ASM
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* Author....: Ted Means
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* CIS ID....: 73067,3332
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*
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* This is an original work by Ted Means and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.2 15 Aug 1991 23:07:20 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.1 14 Jun 1991 19:54:20 GLENN
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* Minor edit to file header
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*
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* Rev 1.0 01 Apr 1991 01:03:10 GLENN
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* Nanforum Toolkit
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*
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*/
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/* $DOC$
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* $FUNCNAME$
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* FT_CHDIR()
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* $CATEGORY$
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* DOS/BIOS
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* $ONELINER$
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* Change the current directory
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* $SYNTAX$
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* FT_CHDIR( <cDirName> ) -> nResult
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* $ARGUMENTS$
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* <cDirName> is the name of the desired directory.
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* $RETURNS$
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* 0 if successful
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* 3 if path not found
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* 99 if invalid parameters passed
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* $DESCRIPTION$
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* Use this function if you prefer to change the active directory
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* instead of relying on the SET PATH command.
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*
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* The source code is written to adhere to Turbo Assembler's IDEAL mode.
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* To use another assembler, you will need to rearrange the PROC and
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* SEGMENT directives, and also the ENDP and ENDS directives (a very
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* minor task).
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* $EXAMPLES$
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* FT_CHDIR( "C:\CLIPPER" )
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* FT_CHDIR( "\" )
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* FT_CHDIR( "..\SOURCE" )
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* $END$
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*/
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/*This is the Original FT_CHDIR() code
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IDEAL
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MODEL HUGE
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Public _HB_FUN_FT_CHDIR
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Extrn _hb_ftdir:Far
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Segment _NanFor Word Public "CODE"
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Assume CS:_NanFor
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Proc _HB_FUN_FT_CHDIR Far
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Mov AH,3Bh * DOS service -- change directory
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Push AX * Save on stack
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Call _hb_ftdir * Call generic directory routine
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Add SP,2 * Realign stack
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RetF
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Endp _HB_FUN_FT_CHDIR
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Ends _NanFor
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End
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*/
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/* This is the New one Rewriten in C*/
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#include "extend.h"
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#include "dos.h"
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HB_FUNC( FT_CHDIR)
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{
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#if defined(HB_OS_DOS)
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{
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int Status;
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char *path=hb_parc(1);
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union REGS regs;
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struct SREGS sregs;
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segread(&sregs);
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regs.h.ah=0x3B;
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sregs.ds=FP_SEG(path);
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regs.HB_XREGS.dx=FP_OFF(path);
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int86x(0x21,®s,®s,&sregs);
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Status=regs.HB_XREGS.ax;
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hb_retl(Status);
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}
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#endif
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}
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