Rev 533 | Blame | Compare with Previous | Last modification | View Log | RSS feed
/* This file is part of the SvarCOM project and is published under the terms
* of the MIT license.
*
* Copyright (C) 2021-2022 Mateusz Viste
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* verify
*/
static enum cmd_result cmd_verify(struct cmd_funcparam *p) {
if (cmd_ishlp(p)) {
nls_outputnl(19,0); /* "Tells DOS whether to verify that files are written correctly to disk." */
outputnl("");
outputnl("VERIFY [ON | OFF]");
outputnl("");
nls_outputnl(19,1); /* "Type VERIFY without a parameter to display its current setting." */
return(CMD_OK);
}
if (p->argc > 1) {
nls_outputnl(0,4); /* "Too many parameters" */
return(CMD_FAIL);
}
if (p->argc == 0) {
unsigned char verstate = 0;
_asm {
push ax
mov ah, 0x54 /* Get VERIFY status */
int 0x21 /* AL == 0 (off) or AL == 1 (on) */
mov [verstate], al
pop ax
}
if (verstate == 0) {
nls_outputnl(19,2); /* "VERIFY is off" */
} else {
nls_outputnl(19,3); /* "VERIFY is on" */
}
return(CMD_OK);
}
/* argc == 1*/
if (imatch(p->argv[0], "on")) {
_asm {
push ax
push dx
mov ax, 0x2e01 /* set verify ON */
xor dl, dl /* apparently required by MS-DOS 2.x */
int 0x21
pop dx
pop ax
}
} else if (imatch(p->argv[0], "off")) {
_asm {
push ax
push dx
mov ax, 0x2e00 /* set verify OFF */
xor dl, dl /* apparently required by MS-DOS 2.x */
int 0x21
pop dx
pop ax
}
} else {
nls_outputnl(19,4); /* "Must specify ON or OFF" */
return(CMD_FAIL);
}
return(CMD_OK);
}