#define WIN32_LEAN_AND_MEAN#include <windows.h>#include <stdint.h>#include "view.h"
int File::open(const char *name) { HANDLE *handles = (HANDLE*)&os_handle[0]; handles[0] = handles[1] = nullptr;
handles[0] = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr ); if (!handles[0]) return -1;
BY_HANDLE_FILE_INFORMATION info = {0}; GetFileInformationByHandle(handles[0], &info); total_size = (int64_t)info.nFileSizeHigh << 32LL | (int64_t)info.nFileSizeLow;
handles[1] = CreateFileMapping(handles[0], NULL, PAGE_READONLY, 0, 0, NULL); if (!handles[1]) return -2;
data = (char*)MapViewOfFile(handles[1], FILE_MAP_READ, 0, 0, 0); if (!data) return -3;
return 0;}
void File::close() { HANDLE *handles = (HANDLE*)&os_handle[0];
if (data) UnmapViewOfFile(data); if (handles[0]) CloseHandle(handles[0]); if (handles[1]) CloseHandle(handles[1]);
data = nullptr; handles[0] = handles[1] = nullptr;}