0,0 → 1,117 |
/* 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. |
*/ |
|
/* |
* chcp |
*/ |
|
static enum cmd_result cmd_chcp(struct cmd_funcparam *p) { |
unsigned short nnn = 0; |
unsigned short errcode = 0; |
|
if (cmd_ishlp(p)) { |
nls_outputnl(11,0); /* "Displays or sets the active code page number" */ |
outputnl(""); |
nls_outputnl(11,1); /* "CHCP [nnn]" */ |
outputnl(""); |
nls_outputnl(11,2); /* "nnn Specifies a code page number" */ |
outputnl(""); |
nls_outputnl(11,3); /* "Type CHCP without a parameter to display the active code page number." */ |
return(CMD_OK); |
} |
|
/* too many parameters */ |
if (p->argc > 1) { |
nls_outputnl(0,4); /* "Too many parameters" */ |
return(CMD_FAIL); |
} |
|
/* one param? must be numeric in range 1+ */ |
if (p->argc == 1) { |
unsigned char nlsfuncflag = 0; |
if (atous(&nnn, p->argv[0]) != 0) { |
nls_outputnl(11,4); /* "Invalid code page number" */ |
return(CMD_FAIL); |
} |
_asm { |
/* verify that NLSFUNC is installed */ |
push ax |
push bx |
|
mov ax, 0x1400 /* DOS 3+ -- is NLSFUNC.EXE installed? */ |
int 0x2f /* AL = 0xff -> installed */ |
cmp al, 0xff |
jne DONE |
mov [nlsfuncflag], 1 |
|
/* set code page to nnn */ |
|
mov ax, 0x6602 /* DOS 3.3+ -- Activate Code Page */ |
mov bx, [nnn] |
int 0x21 /* CF set on error and err code in AX */ |
jnc DONE |
mov [errcode], ax /* store err code in nnn on failure */ |
DONE: |
|
pop bx |
pop ax |
} |
if (nlsfuncflag == 0) { |
nls_outputnl(11,5); /* "NLSFUNC not installed" */ |
} else if (errcode != 0) { |
nls_outputnl(11,6); /* "Failed to change code page" */ |
return(CMD_FAIL); |
} |
|
} else { /* no parameter given: display active code page */ |
|
_asm { |
push ax |
push bx |
push dx |
|
mov ax, 0x6601 /* DOS 3.3+ -- Query Active Code Page */ |
int 0x21 /* CF set on error, current CP in BX */ |
mov [nnn], bx |
jnc DONE |
mov [errcode], ax |
DONE: |
|
pop dx |
pop bx |
pop ax |
} |
if (errcode == 0) { |
nls_output(11,7); /* Active code page: */ |
output(" "); |
sprintf(p->BUFFER, "%u", nnn); |
outputnl(p->BUFFER); |
} else { |
nls_outputnl_doserr(errcode); |
return(CMD_FAIL); |
} |
} |
|
return(CMD_OK); |
} |