0,0 → 1,72 |
/* |
* set [varname[=value]] |
* |
* value cannot contain any '=' character, but it can contain spaces |
* varname can also contain spaces |
*/ |
|
|
static int cmd_set(struct cmd_funcparam *p) { |
char far *env = MK_FP(p->env_seg, 0); |
char *buff = p->BUFFER; |
|
if (cmd_ishlp(p)) { |
outputnl("Displays, sets, or removes DOS environment variables"); |
outputnl(""); |
outputnl("SET [variable=[string]]"); |
outputnl(""); |
outputnl("variable Specifies the environment-variable name"); |
outputnl("string Specifies a series of characters to assign to the variable"); |
outputnl(""); |
outputnl("Type SET without parameters to display the current environment variables."); |
} |
|
/* 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 */ |
for (ptr = p->cmdline; *ptr != ' '; ptr++); |
/* now locate the first non-space: that's where the variable name begins */ |
for (; *ptr == ' '; ptr++); |
/* copy variable to buff and switch it upercase */ |
i = 0; |
for (; *ptr != '='; ptr++) { |
if (*ptr == '\r') goto syntax_err; |
buff[i] = *ptr; |
if ((buff[i] >= 'a') && (buff[i] <= 'z')) buff[i] -= ('a' - 'A'); |
i++; |
} |
|
/* copy value now */ |
while (*ptr != '\r') { |
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) outputnl("Not enough available space within the environment block"); |
} |
return(-1); |
|
syntax_err: |
|
outputnl("Syntax error"); |
return(-1); |
} |