file_iterator
file_enumerator::begin(
void
) const
{
return file_iterator(_path);
}
void test_fstream_iterator() {
ifstream in_file("in_test.txt");
ofstream out_file("out_test.txt");
if (! in_file || ! out_file) {
cerr << "Cannot find input or ouput file.\n";
}
istream_iterator<string> file_iterator(in_file);
istream_iterator<string> end_of_file;
vector<string> text;
copy(file_iterator, end_of_file, back_inserter(text));
sort(text.begin(), text.end());
ostream_iterator<string> out_file_iterator(out_file, " ");
copy(text.begin(), text.end(), out_file_iterator);
}
// System call handler: call the appropriate system call according to the nb argument.
// Called by the assembly code _syscall_handler
int syscall_handler(syscall_t nb, uint32_t arg1, uint32_t arg2, uint32_t arg3, uint32_t arg4, uint32_t caller_tss_selector) {
printf("task %d called syscall_handler\n", caller_tss_selector);
// Offset for pointers to reach the real address (task thinks it indexes since 0x0 but it really doesn't)
task_t* t = get_task(caller_tss_selector);
uint32_t offset = FIRST_TASK + t.gdt_tss_sel * TASK_LIMIT;
int ret = 0;
switch (nb) {
case SYSCALL_PUTC:
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
print_char((char) arg1 + offset);
break;
case SYSCALL_PUTS:
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
print_str((char*) arg1 + offset);
break;
case SYSCALL_EXEC:
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
ret = exec((char*) arg1 + offset);
break;
case SYSCALL_GETC:
UNUSED(arg1);
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
ret = getc();
break;
case SYSCALL_FILE_STAT:
UNUSED(arg3);
UNUSED(arg4);
ret = file_stat((char*) arg1 + offset, (stat_t*) arg2 + offset);
break;
case SYSCALL_FILE_READ:
UNUSED(arg3);
UNUSED(arg4);
ret = file_read((char*) arg1 + offset, (void*) arg2 + offset);
break;
case SYSCALL_FILE_REMOVE:
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
ret = file_remove((char*) arg1 + offset);
break;
case SYSCALL_FILE_ITERATOR:
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
file_iterator_t it = file_iterator();
arg1 = (uint32_t) &it + offset;
break;
case SYSCALL_FILE_NEXT:
UNUSED(arg3);
UNUSED(arg4);
ret = file_next((char*) arg1 + offset, (file_iterator_t*) arg2 + offset);
break;
case SYSCALL_GET_TICKS:
UNUSED(arg1);
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
ret = get_ticks();
break;
default:
UNUSED(nb);
UNUSED(arg1);
UNUSED(arg2);
UNUSED(arg3);
UNUSED(arg4);
break;
}
// End of routine
return ret;
}
