int main(int argc, char *argv[]) {
fd_set fds;
int keep_going = 1;
want_debug = (argc > 1) && (!strcmp(argv[1], "-debug"));
if (want_debug) fprintf(stderr, "execdaemon starting.\n");
while (keep_going) {
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 100000; /* 100 ms */
FD_ZERO(&fds);
FD_SET(0, &fds);
switch (select(1, &fds, NULL, NULL, &timeout)) {
case 1: {
if (!read_command()) {
keep_going = 0;
} else {
eval_command();
}
break;
}
case 0:
break;
case -1:
perror("select");
exit(1);
}
if (kid != 0) {
int pidstatus;
pid_t result = waitpid(kid, &pidstatus, WNOHANG);
if (result != 0) {
if (WIFEXITED(pidstatus)) {
write_response("exit", num_buf(WEXITSTATUS(pidstatus)));
} else if (WIFSIGNALED(pidstatus)) {
write_response("signal", num_buf(WTERMSIG(pidstatus)));
} else {
write_response("died", "");
}
kid = 0;
}
}
}
if (want_debug) fprintf(stderr, "execdaemon exiting.\n");
return 0;
}
int main(int argc,char ** argv){
if(argc <= 1){
std::cout<<"projectModel a.obj -tn/-n/-v b.zip ";
return -1;
}
Command command ;
if(argc==2){
command.objectFileName =std::string( argv[1] );
command.type = Type::Vertex ;
command.projectObjectFileName = command.objectFileName+".zip";
}else if(argc==3){
command.objectFileName =std::string( argv[1] );
std::string t_(argv[2]);
if(t_=="-n"){
command.type = Type::Vertex|Type::Normal;
}else if(t_=="-v"){
command.type = Type::Vertex;
}
else if(t_=="-tn"){
command.type = Type::Vertex|
Type::Normal|
Type::Texture;
}
else {
return -1;
}
command.projectObjectFileName = command.objectFileName+".zip";
}else{
command.objectFileName =std::string( argv[1] );
std::string t_(argv[2]);
if(t_=="-n"){
command.type = Type::Vertex|Type::Normal;
}else if(t_=="-v"){
command.type = Type::Vertex;
}else if(t_=="-tn"){
command.type = Type::Vertex|
Type::Normal|
Type::Texture;
}
else {
return -1;
}
command.projectObjectFileName = std::string(argv[3]);
}
eval_command(command );
std::quick_exit(0);
return 0;
}
void eval_command_line(const char* s, zombies* z) {
int type;
char* token;
// commandlist contains command groups separated by ';' or '&'
command** commandlist = (command**) malloc(sizeof(command*));
// keep track of how many command groups wehave
int listcontent = 1;
// Your code here!
// build the command
command* c = command_alloc();
// the first command group
commandlist[0] = c;
while ((s = parse_shell_token(s, &type, &token)) != NULL) {
if(type == TOKEN_CONTROL) {
// seeing a ';' means we have to make a new command group
if(token[0] == ';') {
c = command_alloc();
commandlist = (command**) realloc(commandlist, (listcontent + 1)*sizeof(command*));
commandlist[listcontent] = c;
++listcontent;
// seeing a '&' means we have to make a new command group
} else if(token[0] == '&' && !token[1]) {
c->background = 1;
c = command_alloc();
commandlist = (command**) realloc(commandlist, (listcontent + 1)*sizeof(command*));
commandlist[listcontent] = c;
++listcontent;
// putting into new command group so that we can conditionally evaluate it
} else if(token[0] == '&' && token[1] == '&') {
c = command_alloc();
c->needcondition = 0;
commandlist = (command**) realloc(commandlist, (listcontent + 1)*sizeof(command*));
commandlist[listcontent] = c;
++listcontent;
// within a command group, mark it as piping if seeing '|'
} else if(token[0] == '|' && !token[1]) {
c->piping = 1;
command_append_arg(c, type, token);
// putting into new command group so that we can conditionally evaluate it
} else if(token[0] == '|' && token[1] == '|') {
c = command_alloc();
c->needcondition = 1;
commandlist = (command**) realloc(commandlist, (listcontent + 1)*sizeof(command*));
commandlist[listcontent] = c;
++listcontent;
}
} else if(type == TOKEN_REDIRECTION) {
// redirecting standard input
if(token[0] == '<' || token[0] == '0') {
c->redirectstdin = 1;
// redirecting standard output
} else if(token[0] == '>' || token[0] == '1') {
c->redirectstdout = 1;
// redirecting standard error
} else if(token[0] == '2' && token[1] == '>') {
c->redirectstderr = 1;
}
} else {
// the token following a redirection token must be a file name that should be dup'ed
// then clears the flag
if(c->redirectstdin) {
c->stdinfilename = token;
c->redirectstdin = 0;
} else if(c->redirectstdout) {
c->stdoutfilename = token;
c->redirectstdout = 0;
} else if(c->redirectstderr) {
c->stderrfilename = token;
c->redirectstderr = 0;
// all other normal tokens
} else {
command_append_arg(c, type, token);
}
}
}
// execute the command
int condition = -1; // exit condition of previous command
for(int i = 0; i < listcontent; i++) {
if (commandlist[i]->argc)
// test if this command group should run
if (commandlist[i]->needcondition == -1 || (commandlist[i]->needcondition == 0 && condition == 0) || (commandlist[i]->needcondition == 1 && condition != 0))
eval_command(commandlist[i], &condition, z);
command_free(commandlist[i]);
}
free(commandlist);
}
