Allow irrKlang to use my encrypted zip files

[ibax]

Hi,

I would like to open my encrypted zip file and assign somehow to irrKlang...

I can attach it to irrlicht filesystem:

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device->getFileSystem()->addFileArchive("soundfiles\\soundfiles.zip",true,false,irr::io::EFAT_ZIP,"mypassword");

And there is some IFileFactory solution to allow irrKlang to read files from this encrypted zip file, but I cannot solve it...

Can somebody show me a real example, how to continue? Unfortunately the addFileArchive does not returns a pointer, only a TRUE value, if the loading was successful. How to work with that file factory related solution? Because the proposed irrklang solution requires a pointer:

http://www.ambiera.com/irrklang/docu/in ... Overriding

[CuteAlien]

Ambiere has it's own forum for irrKlang: http://www.ambiera.com/forum.php?f=1
Better ask questions about that there. We are not really that familiar with irrKlang here (it was written originally by the same author, so it has some connections, but it's really another software package).

[chronologicaldot]

Implement irrklang::IFileFactory, as you have in mind, and have it return your own version of the file reader, which I'll call SFileReader for the sake of brevity. SFileReader needs merely accept an IReadFile from Irrlicht and store it in a buffer.

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class SFileReader : public irrklang::IFileReader
{
char* buf;
public:
  SFileReader( IFileSystem* f, irr::path p ) {
    IReadFile* r = f->createAndOpenFile(p);
    store all characters in r inside of "buf"
  }
 
  // implement all irrKlang functions related to I
  ik_s32 read(void *buffer, ik_u32 sizeToRead )
  {
    copy sizeToRead number of characters from buf to buffer
  }
  // etc.
};
 

Add your encrypted archive via irrlicht prior to creating an instance of SFileReader. You only need to pass the pass to the file in the encrypted folder for this solution to work. No need to access the files in the encrypted folder directly.
You shouldn't even need to worry about the format. Beautifully simple, I'd say.
You can see an example of this buffer storage technique by looking at how it's done in COBJMeshFileLoader.cpp

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    c8* buf = new c8[filesize];
    memset(buf, 0, filesize);
    file->read((void*)buf, filesize);
    const c8* const bufEnd = buf+filesize;
 
    // Process obj information
    const c8* bufPtr = buf;
    // ...
    while(bufPtr != bufEnd) { process information in the buffer }