Magnum One

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Assembly Source File | 1988-11-19 | 10KB | 433 lines

CR EQU 13 LF EQU 10 ASSUME CS:FINDC,DS:FINDC FINDC SEGMENT PARA PUBLIC 'CODE' DB "MAUlloa/Microsoft/V126" COLON DB ':',' ' ; 16 LINSTR DB '[' ; 18 INTSTR DB 8 DUP (0) ; 19 NOTFLG DB ; 21 CNTFLG DB ; 22 NUMFLG DB ; 23 DB 0,0 ; 24,25 PCOUNT DW ; 26 MCOUNT DW ; 28 FINDF PROC FAR FIND: MOV AH,30H ; GET DOS VERSION INT 21H CMP AL,2 JGE CONT PUSH CS POP DS MOV DX,OFFSET BADDOS MOV AH,09H ; PRINT STRING INT 21H PUSH ES XOR AX,AX PUSH AX RET FINDF ENDP ASSUME CS:FINDC,DS:FINDC FINDN PROC NEAR CONT: PUSH CS POP ES MOV SI,81H CALL SKIPSP OR BX,BX JZ HAVEPARAM CNTERR: MOV DX,OFFSET NUMERR MOV CL,CS:NUMLEN CALL WRITEDSERR MOV AL,2 JMP ERREXIT HAVEPARAM: MOV AH,37H ; INTERNAL CALL GET SWITCHAR MOV AL,0 ; 1 = SET SWITCHAR ?? INT 21H PUSH DX SCANSWITCH: LODSB CMP AL,' ' JZ MORESP CMP AL,CR JZ CNTERR POP DX CMP AL,DL JNZ SCANPAT PUSH DX LODSB CMP AL,' ' JZ MORESP CMP AL,CR JZ CNTERR CALL LCUC MOV BX,OFFSET NOTFLG CMP AL,'V' JZ SETNOT CMP AL,'C' JZ SETCNT CMP AL,'N' JZ SETNUM MOV ES:PATTRN[0],AL MOV DX,OFFSET PRMERR MOV CL,CS:PRMLEN CALL WRITEDSERR MOV DX,OFFSET PATTRN MOV CX,1 CALL WRITEDSERR MOV DX,OFFSET CRLF MOV CX,2 CALL WRITEDSERR JMP SCANSWITCH SETNOT: MOV DI,0 JMP SHORT SETFLG SETCNT: MOV DI,1 JMP SHORT SETFLG SETNUM: MOV DI,2 SETFLG: MOV ES:BYTE PTR [BX+DI],-1 JMP SCANSWITCH MORESP: DEC SI CALL SKIPSP OR BX,BX JZ SCANSWITCH JMP CNTERR SCANPAT: CMP AL,'"' JNZ NOPAT MOV DI,OFFSET PATTRN XOR CX,CX PATCH: LODSB CMP AL,CR JNZ STLPAT NOPAT: MOV DX,OFFSET SYNERR MOV CL,CS:SYNLEN CALL WRITEDSERR MOV AL,2 JMP ERREXIT STLPAT: CMP AL,'"' JNZ STOCH LODSB CMP AL,'"' JZ STOCH DEC SI MOV ES:PATLEN,CX OR CX,CX JNZ HAVPAT MOV AL,1 JMP ERREXIT STOCH: STOSB INC CX JMP PATCH HAVPAT: CALL SKIPSP OR BX,BX JZ HAVFIL PUSH CS POP DS MOV AX,0 JMP DOREAD HAVFIL: CALL CLRCNT MOV DI,OFFSET FILNAM XOR CX,CX FILCH: LODSB CMP AL,' ' JZ FILEND CMP AL,CR JZ FILEND STOSB INC CX JMP FILCH FILEND: DEC SI MOV ES:BYTE PTR [DI],0 PUSH SI PUSH DS MOV ES:FILLEN,CX PUSH CS POP DS MOV DX,OFFSET FILNAM MOV AH,3DH ; OPEN FILE MOV AL,0 INT 21H JNB FILOPN JMP BADFIL FILOPN: PUSH AX MOV DX,OFFSET SEPLIN MOV CL,CS:SEPLEN XOR CH,CH CALL WRITESTR MOV DX,OFFSET FILNAM MOV CX,FILLEN CALL WRITESTR CMP CNTFLG,-1 JZ NOCRLF MOV DX,OFFSET CRLF MOV CX,2 CALL WRITESTR NOCRLF: POP AX DOREAD: MOV BX,AX NXTREAD:MOV DX,OFFSET BUFFER MOV CX,4096 MOV AH,3FH ; READ FILE INT 21H JNB DIDREAD JMP BADREAD DIDREAD:OR AX,AX JNZ GREPBUF CMP CNTFLG,-1 JNZ NOCNT CALL WRITECNT NOCNT: CMP BX,0 JNZ DOCLOSE JMP NRMEXIT DOCLOSE:MOV AH,3EH ; CLOSE FILE INT 21H JMP NXTFIL GREPBUF:PUSH BX MOV BP,OFFSET BUFFER MOV DI,AX CMP AX,4095 JG NOPATCH MOV BX,BP CMP BYTE PTR [BX+DI-01],LF JZ NOPATCH MOV BYTE PTR [BX+DI],CR INC DI MOV BYTE PTR [BX+DI],LF INC DI NOPATCH:PUSH DI PUSH BP MOV DX,PATLEN DEC DX NXTSCN: INC MCOUNT POP BP MOV DI,BP POP CX MOV BX,CX MOV AL,LF JCXZ NOFULLN REPNZ SCASB JNZ NOFULLN PUSH CX PUSH DI MOV CX,DI SUB CX,BP MOV BX,CX DEC CX DEC CX JCXZ NOTFND MOV DI,BP SAMLN: MOV SI,OFFSET PATTRN LODSB REPNZ SCASB JNZ NOTFND CMP CX,DX JB NOTFND PUSH DI PUSH CX MOV CX,DX JCXZ DIDFND REPZ CMPSB JZ DIDFND POP CX POP DI JMP SAMLN DIDFND: POP AX POP AX CMP NOTFLG,-1 JNZ NEGNOT JMP NXTSCN NOTFND: CMP NOTFLG,-1 JNZ NXTSCN NEGNOT: CMP CNTFLG,-1 JNZ NOCOUNT INC PCOUNT JMP NXTSCN NOCOUNT:PUSH DX CMP NUMFLG,-1 JNZ NOLNNUM CALL WRITELNNUM NOLNNUM:MOV DX,BP MOV CX,BX CALL WRITESTR POP DX JMP NXTSCN NOFULLN:MOV DX,BX POP BX OR DX,DX JZ WHATISTHIS NEG DX MOV CX,-1 MOV AL,1 MOV AH,42H ; LSEEK INT 21H JB BADREAD WHATISTHIS: JMP NXTREAD ASSUME CS:FINDC BADREAD: CMP BX,0 JZ NRMEXIT MOV AH,3EH ; CLOSE FILE INT 21H MOV DX,OFFSET RDDERR MOV CL,CS:RDDLEN JMP DOWRITE BADFIL: MOV DX,OFFSET FNDERR MOV CL,CS:FNDLEN DOWRITE:CALL WRITEERR CALL WRITEFIL NXTFIL: POP DS POP SI CALL SKIPSP OR BX,BX JNZ NRMEXIT JMP HAVFIL NRMEXIT:MOV AL,0 ERREXIT:MOV AH,4CH ; EXIT INT 21H SKIPSP: CLD XOR BX,BX HAVESP: LODSB CMP AL,' ' JZ HAVESP CMP AL,CR JNZ NOCR MOV BX,AX NOCR: DEC SI RET CLRCNT: MOV ES:BYTE PTR PCOUNT,0 MOV ES:BYTE PTR MCOUNT,0 RET WRITECNT: PUSH BX CMP BX,0 JZ NOCOLON MOV DX,OFFSET COLON MOV CX,2 CALL WRITESTR NOCOLON:MOV AX,PCOUNT MOV DI,OFFSET INTSTR CALL WRITEINT MOV DX,OFFSET INTSTR CALL WRITESTR MOV DX,OFFSET CRLF MOV CX,2 CALL WRITESTR POP BX RET WRITELNNUM: PUSH BX PUSH DX MOV AX,MCOUNT MOV DI,OFFSET INTSTR CALL WRITEINT MOV BYTE PTR [DI],']' INC CX INC CX MOV DX,OFFSET LINSTR CALL WRITESTR POP DX POP BX RET WRITESTR: MOV BX,1 MOV AH,40H ; WRITE FILE INT 21H RET WRITEINT: MOV BX,10 XOR CX,CX INTDIV: INC CX CMP AX,BX JB INTDONE XOR DX,DX DIV BX ADD DL,'0' PUSH DX JMP INTDIV INTDONE:ADD AL,'0' PUSH AX MOV BX,CX INTSTO: POP AX STOSB LOOP INTSTO MOV CX,BX RET WRITEFIL: MOV DX,OFFSET FILNAM MOV CX,FILLEN CALL WRITEERR MOV DX,OFFSET CRLF MOV CX,2 CALL WRITEERR RET WRITEDSERR: PUSH DS PUSH CS POP DS CALL WRITEERR POP DS RET WRITEERR: XOR CH,CH MOV BX,2 MOV AH,40H ; WRITE FILE INT 21H RET LCUC: CMP AL,'a' JB OK CMP AL,'z' JG OK AND AL,NOT 20H OK: RET PATLEN DW ; 0332 PATTRN DB 128 DUP (0) ; 0334 FILLEN DW ; 03B4 FILNAM DB 65 DUP (0) ; 03B6 BUFFER DB 4096 DUP (0) ; 03F7 DB 9 DUP (0) BADDOS DB "Incorrect DOS version$" ; 00 CRLF DB CR,LF ; 16 NUMERR DB "FIND: Invalid number of parameters",CR,LF ; 18 NUMLEN DB NUMLEN-NUMERR ; 3C SYNERR DB "FIND: Syntax error",CR,LF ; 3D SYNLEN DB SYNLEN-SYNERR ; 51 FNDERR DB "FIND: File not found " ; 52 FNDLEN DB FNDLEN-FNDERR ; 67 RDDERR DB "FIND: Read error in " ; 68 RDDLEN DB RDDLEN-RDDERR ; 7C PRMERR DB "FIND: Invalid Parameter " ; 7D PRMLEN DB PRMLEN-PRMERR ; 95 SEPLIN DB CR,LF,"---------- " ; 96 SEPLEN DB SEPLEN-SEPLIN ; A3 FINDN ENDP FINDC ENDS FINDS SEGMENT STACK DB 256 DUP (?) FINDS ENDS END FIND