/** 读取指定数目的数据
@Param 存储数据的缓冲区指针
@Param 要读取数据的大小
*/
size_t FZipFileStream::Read( void* pBuf,size_t nSize )
{
zzip_ssize_t ret = zzip_file_read( m_pZipFile,pBuf,nSize );
if( ret < 0 )
{
ZZIP_DIR* dir = zzip_dirhandle( m_pZipFile );
// 报告错误
AString msg = zzip_strerror_of( dir );
FLOG_ERRORF("FZipFileStream::Read, An exception is found when reading zip package! (%s)", msg.c_str());
}
return ret;
}
//-----------------------------------------------------------------------
size_t ZipDataStream::read(void* buf, size_t count)
{
size_t was_avail = mCache.read(buf, count);
zzip_ssize_t r = 0;
if (was_avail < count)
{
r = zzip_file_read(mZzipFile, (char*)buf + was_avail, count - was_avail);
if (r<0) {
ZZIP_DIR *dir = zzip_dirhandle(mZzipFile);
String msg = zzip_strerror_of(dir);
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
mName+" - error from zziplib: "+msg,
"ZipDataStream::read");
}
mCache.cacheData((char*)buf + was_avail, (size_t)r);
}
return was_avail + (size_t)r;
}
