file.hpp

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#pragma once
#include <stdint.h>
 
const int ENOMEM = -1;
const int EINVAL = -2;
const int EDEVFAIL = -3;
const int EMOUNTED = -4;
const int EACCES = -5;
const int EBADFSID = -6;
const int ENOVOLUME = -7;
const int ENOPATH = -8;
const int EEXIST = -9;
const int ENAMETOOLONG = -10;
const int EOUTOFBOUND = -11;
const int EUNFORMAT = -12;
const int ENOSPC = -13;
const int ENOENT = -14;
const int EISDIRECTORY = -15;
const int ESHARE = -16;
const int EMFILE = -17;
const int EBADF = -18;
const int EEOF = -19;
const int ENOTEMPTY = -20;
const int ECLUSTERSIZEMISMATCH = -40;
const int ESYSTEM = -99;
 
const int SEEK_SET = 0;
const int SEEK_CUR = 1;
const int SEEK_END = 2;
 
const int OPEN_READ = 1 << 0;
const int OPEN_WRITE = 1 << 1;
const int OPEN_CREATE = 1 << 2;
const int OPEN_APPEND = 1 << 4;
 
uint16_t constexpr statDateYear(uint16_t date) {
    return ((date >> 9) & 0b1111111) + 1980;
}
 
uint16_t constexpr statDateMonth(uint16_t date) {
    return (date >> 5) & 0b1111;
}
 
uint16_t constexpr statDateDay(uint16_t date) {
    return date & 0b11111;
}
 
uint16_t constexpr statTimeHour(uint16_t time) {
    return (time >> 11) & 0b11111;
}
 
uint16_t constexpr statTimeMinute(uint16_t time) {
    return (time >> 5) & 0b111111;
}
 
uint16_t constexpr statTimeSecond(uint16_t time) {
    return (time & 0b11111) * 2;
}
 
struct 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 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 close(int fd);
 
extern "C"
int findClose(int findHandle);
 
extern "C"
int findFirst(const wchar_t *path, int *findHandle, wchar_t *name, struct findInfo *findInfoBuf);
 
extern "C"
int findNext(int findHandle, wchar_t *name, struct findInfo *findInfoBuf);
 
extern "C"
int fstat(int fd, struct stat *buf);
 
extern "C"
int getAddr(int fd, int offset, const void **addr);
 
extern "C"
int lseek(int fd, int offset, int whence);
 
extern "C"
int mkdir(const char *path);
 
extern "C"
int open(const char *path, int flags);
 
extern "C"
int read(int fd, void *buf, int count);
 
extern "C"
int remove(const char *path);
 
extern "C"
int rename(const char *oldPath, const char *newPath);
 
extern "C"
int stat(const char *path, struct stat *buf);
 
extern "C"
int write(int fd, const void *buf, int count);