0,0 → 1,106 |
/* 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. |
*/ |
|
/* |
* set [varname[=value]] |
* |
* value cannot contain any '=' character, but it can contain spaces |
* varname can also contain spaces |
*/ |
|
|
static enum cmd_result cmd_set(struct cmd_funcparam *p) { |
char far *env = MK_FP(p->env_seg, 0); |
char *buff = p->BUFFER; |
|
if (cmd_ishlp(p)) { |
nls_outputnl(23,0); /* "Displays, sets, or removes DOS environment variables"); */ |
outputnl(""); |
nls_outputnl(23,1); /* "SET [variable=[string]]" */ |
outputnl(""); |
nls_outputnl(23,2); /* "variable Specifies the environment-variable name" */ |
nls_outputnl(23,3); /* "string Specifies a series of characters to assign to the variable" */ |
outputnl(""); |
nls_outputnl(23,4); /* "Type SET without parameters to display the current environment variables." */ |
return(CMD_OK); |
} |
|
/* no arguments - display content */ |
if (p->argc == 0) { |
while (*env != 0) { |
unsigned short i; |
/* copy string to local buff for display */ |
for (i = 0;; i++) { |
buff[i] = *env; |
env++; |
if (buff[i] == 0) break; |
} |
outputnl(buff); |
} |
} else { /* set variable (do not rely on argv, SET has its own rules...) */ |
const char far *ptr; |
unsigned short i; |
|
/* locate the first space (note that cmdline separators should be sanitized |
* to space only by now) */ |
for (ptr = p->cmdline; *ptr != ' '; ptr++); |
|
/* now locate the first non-space: that's where the variable name begins */ |
for (; *ptr == ' '; ptr++); |
|
/* copy variable name to buff */ |
i = 0; |
for (; *ptr != '='; ptr++) { |
if (*ptr == 0) goto syntax_err; |
buff[i++] = *ptr; |
} |
|
/* make variable name all caps (country-dependend) */ |
buff[i] = 0; |
nls_strtoup(buff); |
|
/* copy value now */ |
while (*ptr != 0) { |
buff[i++] = *ptr; |
ptr++; |
} |
|
/* terminate buff */ |
buff[i] = 0; |
|
/* commit variable to environment */ |
i = env_setvar(p->env_seg, buff); |
if (i == ENV_INVSYNT) goto syntax_err; |
if (i == ENV_NOTENOM) { |
nls_outputnl(23,5); /* "Not enough available space within the environment block" */ |
return(CMD_FAIL); |
} |
} |
return(CMD_OK); |
|
syntax_err: |
|
nls_outputnl(0,1); /* "Invalid syntax" */ |
return(CMD_FAIL); |
} |