file.hpp

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#pragma once
#include <stdint.h>
 
const int FILE_ENOMEM = -1;
const int FILE_EINVAL = -2;
const int FILE_EDEVFAIL = -3;
const int FILE_EMOUNTED = -4;
const int FILE_EACCES = -5;
const int FILE_EBADFSID = -6;
const int FILE_ENOVOLUME = -7;
const int FILE_ENOPATH = -8;
const int FILE_EEXIST = -9;
const int FILE_ENAMETOOLONG = -10;
const int FILE_EOUTOFBOUND = -11;
const int FILE_EUNFORMAT = -12;
const int FILE_ENOSPC = -13;
const int FILE_ENOENT = -14;
const int FILE_EISDIRECTORY = -15;
const int FILE_ESHARE = -16;
const int FILE_EMFILE = -17;
const int FILE_EBADF = -18;
const int FILE_EEOF = -19;
const int FILE_ENOTEMPTY = -20;
const int FILE_ECLUSTERSIZEMISMATCH = -40;
const int FILE_ESYSTEM = -99;
 
const int FILE_SEEK_SET = 0;
const int FILE_SEEK_CUR = 1;
const int FILE_SEEK_END = 2;
 
const int FILE_OPEN_READ = 1 << 0;
const int FILE_OPEN_WRITE = 1 << 1;
const int FILE_OPEN_CREATE = 1 << 2;
const int FILE_OPEN_APPEND = 1 << 4;
 
uint16_t constexpr File_StatDateYear(uint16_t date) {
    return ((date >> 9) & 0b1111111) + 1980;
}
 
uint16_t constexpr File_StatDateMonth(uint16_t date) {
    return (date >> 5) & 0b1111;
}
 
uint16_t constexpr File_StatDateDay(uint16_t date) {
    return date & 0b11111;
}
 
uint16_t constexpr File_StatTimeHour(uint16_t time) {
    return (time >> 11) & 0b11111;
}
 
uint16_t constexpr File_StatTimeMinute(uint16_t time) {
    return (time >> 5) & 0b111111;
}
 
uint16_t constexpr File_StatTimeSecond(uint16_t time) {
    return (time & 0b11111) * 2;
}
 
struct File_Stat {
    uint32_t unknown1;
 
    uint32_t fileSize;
 
    uint16_t creationDate;
 
    uint16_t creationTime;
 
    uint16_t lastModifiedDate;
 
    uint16_t lastModifiedTime;
 
    uint16_t unknown2;
 
    uint16_t lastAccessedDate;
};
 
struct File_FindInfo {
    uint8_t unknown0[4];
 
    enum : uint16_t {
        EntryTypeFile = 0x1,
        EntryTypeDirectory = 0x5
    } type;
 
    uint8_t unknown1[2];
    
    uint32_t size;
    
    uint8_t unknown2[8];
};
 
extern "C"
int File_Close(int fd);
 
extern "C"
int File_FindClose(int findHandle);
 
extern "C"
int File_FindFirst(const wchar_t *path, int *findHandle, wchar_t *name, struct File_FindInfo *findInfoBuf);
 
extern "C"
int File_FindNext(int findHandle, wchar_t *name, struct File_FindInfo *findInfoBuf);
 
extern "C"
int File_Fstat(int fd, struct File_Stat *buf);
 
extern "C"
int File_GetAddr(int fd, int offset, const void **addr);
 
extern "C"
int File_Lseek(int fd, int offset, int whence);
 
extern "C"
int File_Mkdir(const char *path);
 
extern "C"
int File_Open(const char *path, int flags);
 
extern "C"
int File_Read(int fd, void *buf, int count);
 
extern "C"
int File_Remove(const char *path);
 
extern "C"
int File_Rename(const char *oldPath, const char *newPath);
 
extern "C"
int File_Stat(const char *path, struct File_Stat *buf);
 
extern "C"
int File_Write(int fd, const void *buf, int count);