int main( int argc, char** argv ) {
command_t cmd;
char line[MAXSTRLEN];
char fullpath[MAXSTRLEN];
int done = FALSE;
while (!done) {
printf(">> ");
fgets(line, MAXSTRLEN, stdin);
line[my_strlen(line)-1] = '\0'; // get rid of newline
parse(line, &cmd);
if (my_strequal(cmd.name, "exit")) {
done = TRUE;
}
else if (is_builtin(&cmd)) {
do_builtin(&cmd);
}
else if (find_fullpath(fullpath, &cmd)) {
// NOTE: find_fullpath() is called again in execute
execute(&cmd);
}
else if (line[0] != '\0') { // non-blank line entered
printf("invalid command\n");
}
cleanup(&cmd);
}
return 0;
} // end main function
// -----------------------------------
// Main function
// Arguments: argc = number of arguments suppled by user
// argv = array of argument values
//
//
int main( int argc, char** argv ) {
int done;
char input[255];
command_t temp_command;
char tempPath[255];
//if statements for signal handling
if (signal(SIGCHLD, sig_child_handler) == SIG_ERR) {
perror("Unable to create new SIGCHLD signal handler!");
exit(-1);
}
// //if statements for ctrl-c handling
// if (signal(SIGINT, sig_int_handler) == SIG_ERR) {
// perror("Unable to create new SIGCHLD signal handler!");
// exit(-1);
// }
done = FALSE;
while (!done) {
printf("$");
fflush(stdout);
gets(input);
parse(input, &temp_command);
if (stringCompare(temp_command.name,"exit")==1)
{
done = TRUE;
}
else if (is_builtin(&temp_command))
{
do_builtin(&temp_command);
}
else if (find_fullpath(tempPath, &temp_command))
{
execute(&temp_command);
}
else {
printf("Command not found.\n");
}
cleanup(&temp_command);
}
// printf( "CSCI 340 Homework Assignment 2 - Have Fun!\n" );
return 0;
} // end main function
void parse(char* line, command_t* p_cmd)
{
int position = 0;
char **args = malloc(BUFFER * sizeof(char*));
char *arg;
// Allocate space for arguments
arg = strtok(line, " ");
while (arg != NULL) {
args[position] = arg;
position++;
p_cmd->name = args[0];
p_cmd->argc = sizeof(args);
p_cmd->argv = args;
// Point values to our command_t struct
}
int execute(command_t* p_cmd)
{
int status = FALSE;
char* fullpath;
status = find_fullpath(fullpath, p_cmd);
if (status) {
if (fork() == 0) {
execv(fullpath, p_cmd->argv);
perror("Execute terminated with an error condition!\n");
exit(TRUE);
}
wait(&status);
} else {
perror("Command not found!\n");
}
return TRUE; // Thanks to Tony Leclerc for example code
}
