| 31,6 → 31,7 |
|---|
| #include <process.h> |
| |
| #include "cmd.h" |
| #include "doserr.h" |
| #include "env.h" |
| #include "helpers.h" |
| #include "redir.h" |
| 536,6 → 537,7 |
|---|
| unsigned short filepos_cx = rmod->batnextline >> 16; |
| unsigned short filepos_dx = rmod->batnextline & 0xffff; |
| unsigned char blen = 0; |
| unsigned short errv = 0; |
| |
| /* open file, jump to offset filpos, and read data into buff. |
| * result in blen (unchanged if EOF or failure). */ |
| 546,6 → 548,7 |
|---|
| push dx |
| |
| /* open file (read-only) */ |
| mov bx, 0xffff /* preset BX to 0xffff to detect error conditions */ |
| mov dx, batname_off |
| mov ax, batname_seg |
| push ds /* save DS */ |
| 553,7 → 556,7 |
|---|
| mov ax, 0x3d00 |
| int 0x21 /* handle in ax on success */ |
| pop ds /* restore DS */ |
| jc DONE |
| jc ERR |
| mov bx, ax /* save handle to bx */ |
| |
| /* jump to file offset CX:DX */ |
| 561,7 → 564,7 |
|---|
| mov cx, filepos_cx |
| mov dx, filepos_dx |
| int 0x21 /* CF clear on success, DX:AX set to cur pos */ |
| jc CLOSEANDQUIT |
| jc ERR |
| |
| /* read the line into buff */ |
| mov ah, 0x3f |
| 569,11 → 572,17 |
|---|
| mov cl, buffmaxlen |
| mov dx, buff |
| int 0x21 /* CF clear on success, AX=number of bytes read */ |
| jc CLOSEANDQUIT |
| jc ERR |
| mov blen, al |
| jmp CLOSEANDQUIT |
| |
| ERR: |
| mov errv, ax |
| |
| CLOSEANDQUIT: |
| /* close file (handle in bx) */ |
| /* close file (if bx contains a handle) */ |
| cmp bx, 0xffff |
| je DONE |
| mov ah, 0x3e |
| int 0x21 |
| |
| 586,6 → 595,8 |
|---|
| |
| /* printf("blen=%u filepos_cx=%u filepos_dx=%u\r\n", blen, filepos_cx, filepos_dx); */ |
| |
| if (errv != 0) outputnl(doserr(errv)); |
| |
| /* on EOF - abort processing the bat file */ |
| if (blen == 0) goto OOPS; |
| |