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rubberduckycooly
GitHub Repository: rubberduckycooly/Sonic-1-2-2013-Decompilation
 Path: blob/main/RSDKv4/Reader.hpp
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#ifndef READER_H

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#define READER_H

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#ifdef FORCE_CASE_INSENSITIVE

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#include "fcaseopen.h"

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#define FileIO                                          FILE

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#define fOpen(path, mode)                               fcaseopen(path, mode)

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#define fRead(buffer, elementSize, elementCount, file)  fread(buffer, elementSize, elementCount, file)

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#define fSeek(file, offset, whence)                     fseek(file, offset, whence)

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#define fTell(file)                                     ftell(file)

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#define fClose(file)                                    fclose(file)

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#define fWrite(buffer, elementSize, elementCount, file) fwrite(buffer, elementSize, elementCount, file)

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#else

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#if RETRO_USING_SDL1 || RETRO_USING_SDL2

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#define FileIO                                          SDL_RWops

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#define fOpen(path, mode)                               SDL_RWFromFile(path, mode)

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#define fRead(buffer, elementSize, elementCount, file)  SDL_RWread(file, buffer, elementSize, elementCount)

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#define fSeek(file, offset, whence)                     SDL_RWseek(file, offset, whence)

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#define fTell(file)                                     SDL_RWtell(file)

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#define fClose(file)                                    SDL_RWclose(file)

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#define fWrite(buffer, elementSize, elementCount, file) SDL_RWwrite(file, buffer, elementSize, elementCount)

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#else

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#define FileIO                                          FILE

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#define fOpen(path, mode)                               fopen(path, mode)

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#define fRead(buffer, elementSize, elementCount, file)  fread(buffer, elementSize, elementCount, file)

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#define fSeek(file, offset, whence)                     fseek(file, offset, whence)

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#define fTell(file)                                     ftell(file)

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#define fClose(file)                                    fclose(file)

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#define fWrite(buffer, elementSize, elementCount, file) fwrite(buffer, elementSize, elementCount, file)

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#endif

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#endif

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#define RETRO_PACKFILE_COUNT (0x1000)

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#define RETRO_PACK_COUNT     (0x4)

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struct FileInfo {

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    char fileName[0x100];

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    int fileSize;

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    int vfileSize;

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    int readPos;

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    int bufferPosition;

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    int virtualFileOffset;

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    byte eStringPosA;

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    byte eStringPosB;

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    byte eStringNo;

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    byte eNybbleSwap;

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    bool useEncryption;

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    byte packID;

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    byte encryptionStringA[0x10];

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    byte encryptionStringB[0x10];

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#if !RETRO_USE_ORIGINAL_CODE

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    FileIO *cFileHandle;

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    bool usingDataPack;

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#endif

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};

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struct RSDKFileInfo {

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    uint hash[4];

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    int offset;

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    int filesize;

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    bool encrypted;

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    byte packID;

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};

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struct RSDKContainer {

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    RSDKFileInfo files[RETRO_PACKFILE_COUNT];

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    char packNames[RETRO_PACK_COUNT][0x400];

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    int fileCount;

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    int packCount;

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};

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extern RSDKContainer rsdkContainer;

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extern char fileName[0x100];

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extern byte fileBuffer[0x2000];

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extern int fileSize;

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extern int vFileSize;

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extern int readPos;

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extern int readSize;

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extern int bufferPosition;

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extern int virtualFileOffset;

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extern bool useEncryption;

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extern byte packID;

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extern byte eStringPosA;

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extern byte eStringPosB;

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extern byte eStringNo;

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extern byte eNybbleSwap;

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extern byte encryptionStringA[0x10];

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extern byte encryptionStringB[0x10];

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extern FileIO *cFileHandle;

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inline void CopyFilePath(char *dest, const char *src)

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{

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    strcpy(dest, src);

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    for (int i = 0;; ++i) {

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        if (i >= strlen(dest)) {

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            break;

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        }

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        if (dest[i] == '/')

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            dest[i] = '\\';

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    }

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}

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bool CheckRSDKFile(const char *filePath);

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inline void CloseRSDKContainers()

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{

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    for (int i = 0; i < 4; ++i) {

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        strcpy(rsdkContainer.packNames[i], "");

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    }

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    rsdkContainer.packCount = 0;

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    rsdkContainer.fileCount = 0;

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}

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#if !RETRO_USE_ORIGINAL_CODE

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int CheckFileInfo(const char *filepath);

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#endif

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bool LoadFile(const char *filePath, FileInfo *fileInfo);

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inline bool CloseFile()

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{

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    int result = 0;

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    if (cFileHandle)

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        result = fClose(cFileHandle);

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    cFileHandle = NULL;

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    return result;

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}

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void GenerateELoadKeys(uint key1, uint key2);

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void FileRead(void *dest, int size);

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void FileSkip(int count);

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inline size_t FillFileBuffer()

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{

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    if (readPos + 0x2000 <= fileSize)

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        readSize = 0x2000;

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    else

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        readSize = fileSize - readPos;

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    size_t result = fRead(fileBuffer, 1u, readSize, cFileHandle);

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    readPos += readSize;

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    bufferPosition = 0;

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    return result;

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}

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void GetFileInfo(FileInfo *fileInfo);

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void SetFileInfo(FileInfo *fileInfo);

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size_t GetFilePosition();

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void SetFilePosition(int newPos);

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bool ReachedEndOfFile();

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#endif // !READER_H

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