int main()
{
int flags = fcntl(0, F_GETFL, 0);
fcntl(0, F_SETFL, flags | O_NONBLOCK);
char buffer[1024];
getcwd(directory, 1024);
List* l = list_constructor();
command_t command;
reset_command(&command);
prompt();
while(1)
{
if(read(0, buffer, 1023) > 0)
{
// read the command into the struct
read_command(buffer, &command);
// parse the command for background execution, change directory, or file redirection
parse_command(&command);
/* call the command handler.
this will execute the command. handles both background and non-background
*/
int pid = command_handler(&command, l);
if(pid == 0)
{
return 0;
}
// reset the command.
reset_command(&command);
}
// check for background commands and remove them from the wait list.
check_background_commands(l);
}
return 0;
}
void test_vector()
{
vector<string> default_constructor;
vector<string> size_constructor(20);
vector<string> list_constructor({ string("hello"), string(" world"), string(" second "), string("test") });
print(default_constructor);
print(size_constructor);
print(list_constructor);
string pushback_str("this string is being pushed back");
vector<string> pushback_normal;
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
pushback_normal.push_back(pushback_str);
print(pushback_normal);
auto check_operators = [](const vector<string>& vec, int32 start, size_t length) {
assert(vec.size() == length);
bool error_found = false;
for (size_t i = 0; i < vec.size(); ++i)
{
if (atoi(vec[i].c_str()) != start + i)
{
error_found = true;
printf("Error in pushback or subscript operators, value: %u\n", i);
}
}
if (error_found == false) printf("subscript and pushback operators successful\n");
};
auto itostr = [&check_operators](vector<string>& vec, int32 start, int32 length){
char_t buffer[256];
for (int32 i = start; i < start + length; ++i)
{
vec.push_back(_itoa(i, buffer, 10));
}
check_operators(vec, start, length);
};
int32 start = -10;
int32 length = 45;
vector<string> pushback_rvalue;
itostr(pushback_rvalue, start, length);
print(pushback_rvalue);
//test copy construct
vector<string> copy_normal(pushback_normal);
vector<string> assign_normal;
assign_normal = pushback_normal;
printf("\ntest copy normal:\n");
print(copy_normal);
printf("\ntest assign normal:\n");
print(assign_normal);
auto run_test = [](vector<string>& vec, string test_name, void(*callback)(vector<string>&)) {
printf("\ntest %s:\n", test_name.c_str());
printf("before:\n");
print(vec);
callback(vec);
printf("after:\n");
print(vec);
};
auto clear = [](vector<string>& vec) { vec.clear(); };
auto emplace_back = [](vector<string>& vec) { vec.emplace_back("emp1", "emp2", "emp3"); };
auto reset = [](vector<string>& vec) { vec.reset(); };
auto reserve200 = [](vector<string>& vec) { vec.reserve(200); };
auto reserve500 = [](vector<string>& vec) { vec.reserve(500); };
run_test(pushback_normal, "emplace back", emplace_back);
run_test(pushback_rvalue, "emplace back", emplace_back);
run_test(pushback_normal, "reserve200", reserve200);
run_test(pushback_rvalue, "reserve500", reserve500);
run_test(pushback_normal, "clear", clear);
run_test(pushback_rvalue, "clear", clear);
run_test(pushback_normal, "emplace back", emplace_back);
run_test(pushback_rvalue, "emplace back", emplace_back);
run_test(pushback_normal, "reset", reset);
run_test(pushback_rvalue, "reset", reset);
run_test(pushback_normal, "reserve200", reserve200);
run_test(pushback_rvalue, "reserve500", reserve500);
}
