?? rxdosdir.asm
字號(hào):
TITLE 'Dir - RxDOS Command Shell Dir Function'
PAGE 59, 132
.LALL
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; RxDOS Command Shell Dir ;
;...............................................................;
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Real Time Dos ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; This material was created as a published version of a DOS ;
; equivalent product. This program logically functions in ;
; the same way as MSDOS functions and it is internal data ;
; structure compliant with MSDOS 6.0 ;
; ;
; This product is distributed AS IS and contains no warranty ;
; whatsoever, including warranty of merchantability or ;
; fitness for a particular purpose. ;
; ;
; ;
; (c) Copyright 1990, 1997. Api Software and Mike Podanoffsky ;
; All Rights Reserved Worldwide. ;
; ;
; This product is protected under copyright laws and may not ;
; be reproduced in whole or in part, in any form or media, ;
; included but not limited to source listing, facsimile, data ;
; transmission, cd-rom, or floppy disk without the expressed ;
; written consent of the author. ;
; ;
; License for distribution for commercial use or resale ;
; required from: ;
; ;
; Api Software ;
; 12 South Walker Street ;
; Lowell, MA 01851 ;
; ;
; internet: mikep@world.std.com ;
; ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; Compile with MASM 5.1 ;
;...............................................................;
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; RxDOS Command Shell ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Programmer's Notes: ;
; ;
; Command Shell consists of two parts bound together into a ;
; single executable load. There exists a single resident ;
; command shell which is accessible by an Int 2Eh. ;
; ;
;...............................................................;
include rxdosmac.asm
include rxdosdef.asm
include rxdoscin.asm
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; RxDOS Command Shell ;
;...............................................................;
RxDOSCMD SEGMENT PARA PUBLIC 'CODE'
assume cs:RxDOSCMD, ds:RxDOSCMD, es:RxDOSCMD, ss:RxDOSCMD
public _Dir
public _splitpath
public _makePath
extrn CheckOptOneArg : near
extrn CmndError_InvalidDrive : near
extrn CmndError_NoFilesFound : near
extrn CRLF : near
extrn DisplayLine : near
extrn DisplayErrorMessage : near
extrn PreProcessCmndLine : near
extrn RxDOS_AllFiles : near
extrn setPagingMode : near
extrn _AppendPathName : near
extrn _CopyString : near
extrn _DirAttribSwitch : near
extrn _DirBareSwitch : near
extrn _DirLowerCaseSwitch : near
extrn _DirOrderSwitch : near
extrn _DirPauseSwitch : near
extrn _DirSubDirSwitch : near
extrn _DirSwitches : near
extrn _DirWideSwitch : near
extrn _Dir_DirectoryOf : near
extrn _Dir_DirEntry : near
extrn _Dir_FileEntry : near
extrn _Dir_Files : near
extrn _Dir_NoVolumeLabel : near
extrn _Dir_VolumeLabel : near
extrn _Dir_VolumeSerialNumber : near
extrn RxDOS_DTA : near
extrn _lowerCase : near
extrn _lowerCaseString : near
extrn _endofString : near
extrn _sprintf : near
extrn returnVolumeName : near
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Dir Time To Ascii (USA Format) ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Input: ;
; ax time value ;
; di address to display time of day ;
; ;
;...............................................................;
_dirTimeToAscii:
push di
push ax
mov ch, 'a'
mov cl, 11 ; ch = 0
shr ax, cl ; hours
cmp ax, 13 ; 1 pm or greater ?
jc _dirTimeToAscii_08 ; no -->
sub ax, 12 ; 1 pm or greater
mov ch, 'p' ; set pm flag
_dirTimeToAscii_08:
mov cl, 10
div cl
or ax, '00' ; conv to ascii
stosw
mov al,':'
stosb
pop ax
mov cl, 5
shr ax, cl ; minutes
and ax, 00111111b ; mask off hours
mov cl, 10
div cl
or ax, '00' ; conv to ascii
stosw
xor ah, ah
mov al, ch
stosw
pop di
cmp byte ptr [ di ], '0'
jnz _dirTimeToAscii_12
mov byte ptr [ di ], ' '
_dirTimeToAscii_12:
ret
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Dir Date To Ascii (USA Format) ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Input: ;
; ax date value ;
; di address to display date of day ;
; ;
;...............................................................;
_dirDateToAscii:
push di
push ax
mov cl, 5
shr ax, cl ; Month
and ax, 00001111b ; mask off year
mov cl, 10
div cl
or ax, '00' ; conv to ascii
stosw
mov al,'-'
stosb
pop ax
push ax
and ax, 00011111b ; mask off everything but day
mov cl, 10
div cl
or ax, '00' ; conv to ascii
stosw
mov al,'-'
stosb
pop ax
mov cl, 9
shr ax, cl ; Year
and ax, 01111111b ; mask
add ax, 80 ; 80 plus
cmp ax, 100 ; past year 2000 ?
jc _dirDateToAscii_08 ; no need to adjust -->
sub ax, 100 ; 2000 plus
_dirDateToAscii_08:
mov cl, 10
div cl
or ax, '00' ; conv to ascii
stosw
xor al, al
stosb
pop di
cmp byte ptr [ di ], '0'
jnz _dirDateToAscii_12
mov byte ptr [ di ], ' '
_dirDateToAscii_12:
ret
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; test drive letter ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Input: ;
; al drive letter or null character ;
; ;
; Returned: ;
; al drive (0 = A:, 1=B:, ... ) ;
; cy if not valid ;
; zr if null or default drive ;
; ;
;...............................................................;
_testDriveLetter:
or al, al ; default drive ?
jz _testDriveLetter_Return ; yes -->
cmp al, 'A' ; 'A' - 'Z' ?
jc _testDriveLetter_Return ; no -->
cmp al, 'Z' + 1
jc _testDriveLetter_Valid ; no -->
cmp al, 'a' ; 'a' - 'z' ?
jc _testDriveLetter_Return ; no -->
cmp al, 'z' + 1
jc _testDriveLetter_Valid ; no -->
stc
jmp short _testDriveLetter_Return
_testDriveLetter_Valid:
dec al
and al, 1Fh ; just drive letter
_testDriveLetter_Return:
ret
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Split Path ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Usage: ;
; si points to filename to split ;
; di points to expanded name area ;
;...............................................................;
_splitpath:
Entry
def _source, si
def _expandedname, di
def _extension
def _wildchars, 0000
clearMemory sizeExpandedName ; clear expand area
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; examine/ extract drive letter from path
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
cmp byte ptr [ si+1 ],':' ; test for drive letter
jnz _splitpath_08 ; no drive letter entered -->
mov al, byte ptr [ si ]
mov byte ptr [ expDrive ][ di ], al ; isolate drive letter
inc si
inc si
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; scan string through entire path until extension, if any.
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