98 lines
2.1 KiB
C++
98 lines
2.1 KiB
C++
#include "VirtualIO.h"
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#include "api__in_wave.h"
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#include <api/service/waservicefactory.h>
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#include "../nu/AutoWide.h"
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#include <assert.h>
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#include <windows.h>
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// TODO: extend this to use api_filereader
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// instead of just the HTTP reader directly
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// then we could use this is a workaround for unicode filenames
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sf_count_t VirtualGetFileLength( void *user_data )
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{
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svc_fileReader *reader = (svc_fileReader *)user_data;
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return reader->getLength();
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}
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sf_count_t VirtualSeek( sf_count_t offset, int whence, void *user_data )
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{
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svc_fileReader *reader = (svc_fileReader *)user_data;
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switch ( whence )
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{
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case SEEK_SET:
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reader->seek( offset );
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break;
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case SEEK_CUR:
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{
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uint64_t cur = reader->getPos();
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reader->seek( offset + cur );
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}
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break;
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case SEEK_END:
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{
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uint64_t total = reader->getLength();
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reader->seek( total + offset );
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}
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break;
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}
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return reader->getPos();
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}
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sf_count_t VirtualRead( void *ptr, sf_count_t count, void *user_data )
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{
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svc_fileReader *reader = (svc_fileReader *)user_data;
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return reader->read( (int8_t *)ptr, (size_t)count );
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}
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sf_count_t VirtualWrite( const void *ptr, sf_count_t count, void *user_data )
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{
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svc_fileReader *reader = (svc_fileReader *)user_data;
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return reader->write( (int8_t *)ptr, (size_t)count );
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}
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sf_count_t VirtualTell( void *user_data )
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{
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svc_fileReader *reader = (svc_fileReader *)user_data;
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return reader->getPos();
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}
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SF_VIRTUAL_IO httpIO =
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{
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VirtualGetFileLength,
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VirtualSeek,
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VirtualRead,
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VirtualWrite,
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VirtualTell
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};
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static const GUID HTTPReaderGUID =
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{ 0xbc10fa00, 0x53f5, 0x4032, { 0xa0, 0x09, 0x2, 0x2b, 0x87, 0xec, 0x34, 0x04 } };
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void *CreateReader( const wchar_t *url )
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{
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static waServiceFactory *sf = WASABI_API_SVC->service_getServiceByGuid( HTTPReaderGUID );
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if ( sf )
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{
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svc_fileReader *l_reader = (svc_fileReader *)sf->getInterface();
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if ( l_reader )
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l_reader->open( url );
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return l_reader;
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}
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else
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return 0;
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}
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void DestroyReader( void *reader )
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{
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static waServiceFactory *sf = WASABI_API_SVC->service_getServiceByGuid( HTTPReaderGUID );
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if ( sf )
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sf->releaseInterface( reader );
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} |