141 lines
3.0 KiB
NASM
141 lines
3.0 KiB
NASM
|
;
|
||
|
|
; Copyright (c) Mix Software 1988
|
||
|
|
;
|
||
|
|
; flush output buffer
|
||
|
|
;
|
||
|
|
; _fflush(fp) /* write any remaining data from buffer to file */
|
||
|
|
; fdb *fp;
|
||
|
|
;
|
||
|
|
IDT _fflush
|
||
|
|
DEF _fflush
|
||
|
|
FREF _seekend
|
||
|
|
REF _fileerr
|
||
|
|
_fflush MOV BX,SP
|
||
|
|
MOV SI,[BX][%PARM1-2]
|
||
|
|
TEST %[SI][%FD$DIRTY],%FL$WRITE
|
||
|
|
JNZ DOWRITE
|
||
|
|
XOR AX,AX
|
||
|
|
RETSEG
|
||
|
|
;
|
||
|
|
; fp->dirty = 0;
|
||
|
|
; count = fp->bufsize - fp->count;
|
||
|
|
;
|
||
|
|
DOWRITE AND %[SI][%FD$DIRTY],%>FF-FL$WRITE
|
||
|
|
MOV CX,[SI][%FD$BUFSZ]
|
||
|
|
SUB CX,[SI][%FD$COUNT]
|
||
|
|
;
|
||
|
|
; if (count > 0) {
|
||
|
|
;
|
||
|
|
JCXZ DONE
|
||
|
|
;
|
||
|
|
; if (_sysabcd(0x4000,fp->handle,count,fp->bufr,&status) != 0)
|
||
|
|
; (*_fileerr)(status,fp);
|
||
|
|
;
|
||
|
|
; Seek to end of file if append mode
|
||
|
|
TEST [SI][%FD$FLAGS],FL$APPEN
|
||
|
|
JZ W1
|
||
|
|
PUSH DI
|
||
|
|
PUSH CX
|
||
|
|
PUSH SI
|
||
|
|
CALLFAR _seekend
|
||
|
|
POP SI
|
||
|
|
POP CX
|
||
|
|
POP DI
|
||
|
|
W1 MOV AX,>4000
|
||
|
|
MOV BX,[SI][%FD$HNDL]
|
||
|
|
MOV DX,[SI][%FD$BUFR]
|
||
|
|
PUSH CX
|
||
|
|
INT >21
|
||
|
|
POP CX
|
||
|
|
JNB OK
|
||
|
|
FILEERR PUSH SI
|
||
|
|
PUSH AX
|
||
|
|
MOV BX,[_fileerr]
|
||
|
|
CALLSEG [BX]
|
||
|
|
ADD SP,%4
|
||
|
|
MOV AL,[SI][%FD$ERR]
|
||
|
|
XOR AH,AH
|
||
|
|
RETSEG
|
||
|
|
;
|
||
|
|
; else {
|
||
|
|
; if (status != count) (*_fileerr)(0x9a,fp);
|
||
|
|
; else fp->error = 0;
|
||
|
|
;
|
||
|
|
OK CMP AX,CX
|
||
|
|
JNZ DISKFULL
|
||
|
|
MOV [SI][%FD$COUNT],0
|
||
|
|
DONE MOV AX,[SI][%FD$BUFR]
|
||
|
|
MOV [SI][%FD$PTR],AX
|
||
|
|
XOR AX,AX
|
||
|
|
RETSEG
|
||
|
|
;
|
||
|
|
DISKFULL MOV AX,E$NOSPAC
|
||
|
|
JMPS FILEERR
|
||
|
|
END
|
||
|
|
;
|
||
|
|
;
|
||
|
|
; _rflush(fp) /* postion a read file for writing */
|
||
|
|
; FILE *fp;
|
||
|
|
;
|
||
|
|
IDT _rflush
|
||
|
|
DEF _rflush
|
||
|
|
REF _fileerr
|
||
|
|
_rflush MOV BX,SP
|
||
|
|
MOV SI,[BX][%PARM1-2]
|
||
|
|
TEST %[SI][%FD$DIRTY],%FL$READ
|
||
|
|
JNZ DOREAD
|
||
|
|
XOR AX,AX
|
||
|
|
RETSEG
|
||
|
|
;
|
||
|
|
; fp->dirty = 0;
|
||
|
|
; count = fp->ptr - fp->bufr;
|
||
|
|
;
|
||
|
|
DOREAD AND %[SI][%FD$DIRTY],%>FF-FL$READ
|
||
|
|
MOV CX,[SI][%FD$PTR]
|
||
|
|
SUB CX,[SI][%FD$BUFR]
|
||
|
|
MOV [SI][%FD$COUNT],0
|
||
|
|
;
|
||
|
|
; if (count > 0) {
|
||
|
|
;
|
||
|
|
JCXZ DONE
|
||
|
|
;
|
||
|
|
; if (_sysabcd(0x4201,handle,0,count,&status) != 0)
|
||
|
|
; return (*_fileerr)(status,fp); }
|
||
|
|
; return 0;
|
||
|
|
;
|
||
|
|
MOV AX,>4201
|
||
|
|
MOV BX,[SI][%FD$HNDL]
|
||
|
|
MOV DX,CX
|
||
|
|
XOR CX,CX
|
||
|
|
INT >21
|
||
|
|
JB FILEERR
|
||
|
|
DONE MOV AX,[SI][%FD$BUFR]
|
||
|
|
MOV [SI][%FD$PTR],AX
|
||
|
|
XOR AX,AX
|
||
|
|
RETSEG
|
||
|
|
FILEERR PUSH SI
|
||
|
|
PUSH AX
|
||
|
|
MOV BX,[_fileerr]
|
||
|
|
CALLSEG [BX]
|
||
|
|
ADD SP,%4
|
||
|
|
RETSEG
|
||
|
|
END
|
||
|
|
;
|
||
|
|
; Seek to end of file
|
||
|
|
; _seekend(fdbptr)
|
||
|
|
;
|
||
|
|
IDT _seekend
|
||
|
|
DEF _seekend
|
||
|
|
;
|
||
|
|
_seekend PUSH BP
|
||
|
|
MOV BP,SP
|
||
|
|
MOV SI,[BP][%PARM1]
|
||
|
|
MOV AX,>4202
|
||
|
|
XOR CX,CX
|
||
|
|
XOR DX,DX
|
||
|
|
MOV BX,[SI][%FD$HNDL]
|
||
|
|
INT >21
|
||
|
|
POP BP
|
||
|
|
RETSEG
|
||
|
|
END
|