void
execute_command(command_t c, int profiling) {
switch (c->type) {
case IF_COMMAND:
execute_if(c, profiling);
break;
case UNTIL_COMMAND:
execute_until(c, profiling);
break;
case WHILE_COMMAND:
execute_while(c, profiling);
break;
case SEQUENCE_COMMAND:
execute_sequence(c, profiling);
break;
case PIPE_COMMAND:
execute_pipe(c, profiling);
break;
case SIMPLE_COMMAND:
execute_simple(c, profiling);
break;
case SUBSHELL_COMMAND:
execute_subshell(c, profiling);
break;
default:
error (1, 0, "command not found");
}
}
int execute_command_type(command_t c)
{
switch(c->type){
case SIMPLE_COMMAND:
execute(c);
break;
case PIPE_COMMAND:
execute_pipe(c);
break;
case AND_COMMAND:
// the first command already fails
if(execute_command_type(c->u.command[0]) != 0){
c->status = command_status(c->u.command[0]);
}else{
c->status = execute_command_type(c->u.command[1]);
}
break;
case OR_COMMAND:
if(execute_command_type(c->u.command[0]) == 0){
c->status = 0;
}else{
// try the second command if the first fails
c->status = execute_command_type(c->u.command[1]);
}
break;
case SUBSHELL_COMMAND:
c->status = execute_command_type(c->u.subshell_command);
break;
case SEQUENCE_COMMAND: // return the status of the last command
execute_sequence(c);
break;
}
return c->status;
}
void
execute_command (command_t c, bool time_travel)
{
char cmd_type = ' ';
switch(c->type) {
case SIMPLE_COMMAND:
execute_simple(c);
cmd_type = 's';
break;
case SUBSHELL_COMMAND:
execute_subshell(c, time_travel);
cmd_type = '(';
break;
case AND_COMMAND:
execute_and(c, time_travel);
cmd_type = 'a';
break;
case OR_COMMAND:
execute_or(c, time_travel);
cmd_type = 'o';
break;
case SEQUENCE_COMMAND:
execute_sequence(c, time_travel);
cmd_type = ';';
break;
case PIPE_COMMAND:
execute_pipe(c, time_travel);
cmd_type = '|';
break;
default:
return;
}
if (DEBUG) {
printf("%c cmd - exit status: %d\n", cmd_type, c->status);
}
}
