int shell (int argc, char *argv[]) {
char *s = malloc(INPUT_STRING_SIZE+1); /* user input string */
tok_t *t; /* tokens parsed from input */
int lineNum = 0;
int fundex = -1;
pid_t pid = getpid(); /* get current processes PID */
pid_t ppid = getppid(); /* get parents PID */
pid_t cpid, tcpid, cpgid;
char cwd[1024];
int status;
printf("%s running as PID %d under %d\n",argv[0],pid,ppid);
lineNum=0;
fprintf(stdout, "%d%s:",lineNum,getcwd(cwd,sizeof(cwd)));
init_shell();
while ((s = freadln(stdin))){
char * temp;
temp = concat(s,"");
t = getToks(s); /* break the line into tokens */
fundex = lookup(t[0]); /* Is first token a shell literal */
if(fundex >= 0) cmd_table[fundex].fun(&t[1]);
else {
if ((pid = fork()) < 0) { /* fork a child process */
printf("*** ERROR: forking child process failed\n");
exit(1);
}
else if (pid == 0) { /* for the child process: */
process * new =create_process(temp);
add_process(new);
launch_process(new);
int i;
char * command1=">", * command2= "<";
char *amp ="&";
for(i=0;i<MAXTOKS && t[i];i++){
if(strcmp(t[i],amp)== 0){
t[i]=NULL;
cmd_and(t[i],amp);
}
if (strcmp(t[i],command1)==0){
t[i]=NULL;
Redirecting_In_Out(t,t[i+1],command1);
}
if(strcmp(t[i],command2)==0){
t[i]=NULL;
Redirecting_In_Out(t,t[i+1],command2);
}
}
path(t);
}
else { /* for the parent: */
wait(&status);
/* wait for completion */
}
fprintf(stdout, "This shell only supports built-ins. Replace this to run programs as commands.\n");
}
void LedController::process_command() {
current_instruction_pc = pc;
uint8_t cmd = program[pc++];
switch(cmd) {
case CMD_GROUP_SET:
cmd_group_set();
break;
case CMD_GROUP_CLEAR:
cmd_group_clear();
break;
case CMD_CLEAR_GROUPS:
cmd_clear_groups();
break;
case CMD_DISABLE_ACTIONS:
cmd_disable_actions();
break;
case CMD_LOAD_REG_CONST:
cmd_load_reg_const();
break;
case CMD_LDAA8:
cmd_load_reg_8(0);
break;
case CMD_LDAB8:
cmd_load_reg_8(1);
break;
case CMD_LDAC8:
cmd_load_reg_8(2);
break;
case CMD_LDAD8:
cmd_load_reg_8(3);
break;
case CMD_LDAE8:
cmd_load_reg_8(4);
break;
case CMD_LDAA16:
cmd_load_reg_16(0);
break;
case CMD_LDAB16:
cmd_load_reg_16(1);
break;
case CMD_LDAC16:
cmd_load_reg_16(2);
break;
case CMD_LDAD16:
cmd_load_reg_16(3);
break;
case CMD_LDAE16:
cmd_load_reg_16(4);
break;
case CMD_LOAD_REG_MAV:
cmd_load_reg_mav();
break;
case CMD_PAUSE:
cmd_pause();
break;
case CMD_YIELD:
cmd_yield();
break;
case CMD_JUMP_ABS:
cmd_jump_absolute();
break;
case CMD_JUMP_REL:
cmd_jump_relative();
break;
case CMD_BZ_REL:
cmd_bz_relative();
break;
case CMD_BNZ_REL:
cmd_bnz_relative();
break;
case CMD_MOVE_REG:
cmd_move_register();
break;
case CMD_SETCOLOR:
cmd_set_color();
break;
case CMD_SETFLASH:
cmd_set_flash();
break;
case CMD_SETWAVE:
cmd_set_wave();
break;
case CMD_SETBOUNCE:
cmd_set_bounce();
break;
case CMD_SETRANDOM:
cmd_set_random();
break;
case CMD_SETBAR:
cmd_set_bar();
break;
case CMD_SETOFF:
cmd_set_off();
break;
case CMD_SETFILL:
cmd_set_fill();
break;
case CMD_0EQ1:
cmd_0eq1();
break;
case CMD_0NE1:
cmd_0ne1();
break;
case CMD_0LT1:
cmd_0lt1();
break;
case CMD_0LE1:
cmd_0le1();
break;
case CMD_0GT1:
cmd_0gt1();
break;
case CMD_0GE1:
cmd_0ge1();
break;
case CMD_PUSH:
cmd_push();
break;
case CMD_POP:
cmd_pop();
break;
case CMD_AND:
cmd_and();
break;
case CMD_OR:
cmd_or();
break;
default:
if(console != NULL)
{
console->console_print("Invalid program instruction %d at pc:%d\r\n", cmd, pc);
}
}
}