BinaryReader::BinaryReader( const char * path, const char ** perror ) :
Data( NULL ),
Size( 0 ),
Offset( 0 ),
Allocated( true )
{
SysFile f;
if ( !f.Open( path, File::Open_Read, File::Mode_Read ) )
{
if ( perror != NULL )
{
*perror = "Failed to open file";
}
return;
}
Size = f.GetLength();
Data = (UByte*) OVR_ALLOC( Size + 1 );
int bytes = f.Read( (UByte *)Data, Size );
if ( bytes != Size && perror != NULL )
{
*perror = "Failed to read file";
}
f.Close();
}
//-----------------------------------------------------------------------------
// Loads and parses the given JSON file pathname and returns a JSON object tree.
// The returned object must be Released after use.
JSON* JSON::Load(const char* path, const char** perror)
{
SysFile f;
if (!f.Open(path, File::Open_Read, File::Mode_Read))
{
AssignError(perror, "Failed to open file");
return NULL;
}
int len = f.GetLength();
uint8_t* buff = (uint8_t*)OVR_ALLOC(len + 1);
int bytes = f.Read(buff, len);
f.Close();
if (bytes == 0 || bytes != len)
{
OVR_FREE(buff);
return NULL;
}
// Ensure the result is null-terminated since Parse() expects null-terminated input.
buff[len] = '\0';
JSON* json = JSON::Parse((char*)buff, perror);
OVR_FREE(buff);
return json;
}
// Loads a texture from a disk TGA file.
IDirect3DTexture9* LoadTextureTga(HSWRenderParams& rParams, const char* pFilePath, uint8_t alpha)
{
SysFile sysFile;
if(sysFile.Open(pFilePath, FileConstants::Open_Read | FileConstants::Open_Buffered))
return LoadTextureTga(rParams, &sysFile, alpha);
return NULL;
}
//-----------------------------------------------------------------------------
// Serializes the JSON object and writes to the give file path
bool JSON::Save(const char* path)
{
SysFile f;
if (!f.Open(path, File::Open_Write | File::Open_Create | File::Open_Truncate, File::Mode_Write))
return false;
char* text = PrintValue(0, true);
if (text)
{
intptr_t len = OVR_strlen(text);
OVR_ASSERT(len <= (intptr_t)(int)len);
int bytes = f.Write((uint8_t*)text, (int)len);
f.Close();
OVR_FREE(text);
return (bytes == len);
}
else
{
return false;
}
}