9. File and Archive

//=========================

// File and Archive

//=========================

// Open from device

// test.txt must in assets folder.

irr::io::IReadFile* fp = arsa_CreateAndOpenFile( "test.txt" );

 

// Open from cloud

// Keep file (assets2.zip) on device memory.

// Make sure file sizes are fiting with avaliable device memory.

irr::io::IReadFile* fp = arsa_OpenFileFromServer("http://www.sarosworld.com/assets2.zip");

 

// Open from cloud and keep file to permission folder on device.

// false = write download file to device.

irr::io::IReadFile* fp = arsa_OpenFileFromServer("http://www.sarosworld.com/assets2.zip",false);

 

// Write

irr::io::IWriteFile* fp = arsa_CreateAndWriteFile("test.txt");

 

// !!!Close, call when done!!!

fp->drop();

 

//=========================

// Direct Input / Output

//=========================

// Reads from a file.

char buffer[256];

fp->read( buffer, 256 );

 

// Reads a byte line from a file stream.

irr::core::stringc str = arsa_fgets(fp);

 

// Writes to a file.

irr::core::stringc str = "hello";

fp->write(str.c_str(), msg.size());

 

//=========================

// File positioning

//=========================

// Current position in the file in bytes.

long size = fp->getSize();

 

// Size of the file in bytes.

long pos = fp->getPos();

 

// Moves the file position indicator to a specific location in a file

// 10 = Destination position in the file.

// true = If set to true, the position in the file is changed relative to current position. Otherwise the position is changed from beginning of file.

// return true if successful, otherwise false.

fp->seek( 10, true );

 

// Get name of file.

irr::core::stringc name = fp->getFileName();

 

//=========================

// 1. File Example

// read all line in text file

//=========================

irr::io::IReadFile* fp = g_fs->createAndOpenFile("test.txt");

if (fp)

{

    while (!arsa_eof()) // check eof

    {

       irr::core::stringc str = arsa_fgets(fp);

    }

    fp->drop();

}

 

//=========================

// 2. File Example

// write data to permission folder

//=========================

irr::io::IWriteFile* fp = arsa_CreateAndWriteFile("test.txt");

if (fp)

{

    // write string

    irr::core::stringc str = "hello";

    fp->write(str.c_str(), msg.size());

 

    // write int

    int i = 10;

    fp->write(&i, sizeof(int));

 

    // write float

    float f = 45.72f;

    fp->write(&f, sizeof(float));

 

    fp->drop();

}

 

//=========================

// Archive

// Support zip, gzip, tar, pak, npk and wad

//=========================

// Example add zip file.

// After calling this, the ARSA Framework will also search and open files directly from this archive.

 

// 1. open original file for add archive

irr::io::IReadFile* fp = g_fs->createAndOpenFile("assets2.zip");

 

// 2. call add archive function

// fp = file pointer

// false = Ignore case, If set to true, files in the archive can be accessed without writing all letters in the right case.

// false = Ignore path, If set to true, files in the added archive can be accessed without its complete path.

// irr::io::EFAT_ZIP = archiveType

    // irr::io::EFAT_ZIP  = A PKZIP archive.

    // irr::io::EFAT_GZIP = A gzip archive.

    // irr::io::EFAT_PAK  = An ID Software PAK archive.

    // irr::io::EFAT_NPK  = A Nebula Device archive.

    // irr::io::EFAT_TAR  = A Tape ARchive.

    // irr::io::EFAT_WAD  = A wad Archive, Quake2, Halflife.

g_fs->addFileArchive(fp, false, false, irr::io::EFAT_ZIP);

 

// 3. drop original file

fp->drop();

 

// If zip have a password. call this before drop

// "12345678" = zip password

g_fs->addFileArchive(fp, false, false, irr::io::EFAT_ZIP, "12345678");