| 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); |
| } |