void
execute_command (command_t c, int time_travel)
{
/* FIXME: Replace this with your implementation. You may need to
add auxiliary functions and otherwise modify the source code.
You can also use external functions defined in the GNU C Library. */
if(c == NULL)
return;
if(time_travel ==1)
execute_time_travel(c);
else
{
switch(c->type)
{
case SIMPLE_COMMAND:
execute_simple_command(c);
break;
case PIPE_COMMAND:
printf("pipe;");
execute_pipe_command(c);
break;
default:
break;
}
}
}
void
execute_command (command_t c, int time_travel)
{
/* FIXME: Replace this with your implementation. You may need to
add auxiliary functions and otherwise modify the source code.
You can also use external functions defined in the GNU C Library. */
if(c == NULL)
return;
if(time_travel ==1)
execute_time_travel(c);
else
{
switch(c->type)
{
case SIMPLE_COMMAND:
execute_simple_command(c);
break;
case AND_COMMAND:
execute_and_command(c);
break;
case OR_COMMAND:
execute_or_command(c);
break;
case PIPE_COMMAND:
execute_pipe_command(c);
break;
case SUBSHELL_COMMAND:
execute_subshell_command(c);
break;
case SEQUENCE_COMMAND:
execute_sequence_command(c);
break;
case WHILE_COMMAND:
execute_while_command(c);
break;
case FOR_COMMAND:
execute_for_command(c);
break;
case UNTIL_COMMAND:
execute_until_command(c);
break;
case IF_COMMAND:
execute_if_command(c);
break;
case NOT_COMMAND:
execute_not_command(c);
break;
default:
error(1,0, "Error: Unknown command!");
break;
}
//error (1, 0, "command execution not yet implemented");
}
}
int
main (int argc, char **argv)
{
int opt;
int command_number = 1;
int print_tree = 0;
int time_travel = 0;
program_name = argv[0];
for (;;)
switch (getopt (argc, argv, "pt"))
{
case 'p': print_tree = 1; break;
case 't': time_travel = 1; break;
default: usage (); break;
case -1: goto options_exhausted;
}
options_exhausted:;
// There must be exactly one file argument.
if (optind != argc - 1)
usage ();
script_name = argv[optind];
FILE *script_stream = fopen (script_name, "r");
if (! script_stream)
error (1, errno, "%s: cannot open", script_name);
command_stream_t command_stream =
make_command_stream (get_next_byte, script_stream);
command_t last_command = NULL;
command_t command;
if (time_travel == 1 && !print_tree) {
last_command = execute_time_travel(command_stream);
} else {
while ((command = read_command_stream (command_stream)))
{
if (print_tree)
{
printf ("# %d\n", command_number++);
print_command (command);
}
else
{
last_command = command;
execute_command (command, time_travel);
}
}
}
return print_tree || !last_command ? 0 : command_status (last_command);
}
int
main (int argc, char **argv)
{
int command_number = 1;
bool print_tree = false;
bool time_travel = false;
char* measure_file_name = NULL;
program_name = argv[0];
for (;;)
switch (getopt (argc, argv, "pm:t"))
{
case 'p': print_tree = true; break;
case 'm': measure_file_name = optarg; break;
case 't': time_travel = true; break;
default: usage (); break;
case -1: goto options_exhausted;
}
options_exhausted:;
// There must be exactly one file argument.
if (optind != argc - 1)
usage ();
script_name = argv[optind];
FILE *script_stream = fopen (script_name, "r");
if (! script_stream)
error (1, errno, "%s: cannot open", script_name);
command_stream_t command_stream =
make_command_stream (get_next_byte, script_stream);
int ret = 0;
command_t command;
if (print_tree) {
while ((command = read_command_stream (command_stream))) {
printf ("# %d\n", command_number++);
print_command (command, false, 0, 0);
}
}
else if (time_travel) {
ret = execute_time_travel (command_stream);
}
else {
ret = execute_sequential (command_stream, measure_file_name);
}
return ret;
}
