Sweden-Number/dlls/msado15/stream.c

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/*
* Copyright 2019 Hans Leidekker for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#define COBJMACROS
#include "objbase.h"
#include "msdasc.h"
#include "msado15_backcompat.h"
#include "wine/debug.h"
#include "wine/heap.h"
#include "msado15_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(msado15);
struct stream
{
_Stream Stream_iface;
LONG refs;
ObjectStateEnum state;
ConnectModeEnum mode;
StreamTypeEnum type;
LineSeparatorEnum sep;
WCHAR *charset;
LONG size;
LONG allocated;
LONG pos;
BYTE *buf;
};
static inline struct stream *impl_from_Stream( _Stream *iface )
{
return CONTAINING_RECORD( iface, struct stream, Stream_iface );
}
static ULONG WINAPI stream_AddRef( _Stream *iface )
{
struct stream *stream = impl_from_Stream( iface );
return InterlockedIncrement( &stream->refs );
}
static ULONG WINAPI stream_Release( _Stream *iface )
{
struct stream *stream = impl_from_Stream( iface );
LONG refs = InterlockedDecrement( &stream->refs );
if (!refs)
{
TRACE( "destroying %p\n", stream );
heap_free( stream->charset );
heap_free( stream->buf );
heap_free( stream );
}
return refs;
}
static HRESULT WINAPI stream_QueryInterface( _Stream *iface, REFIID riid, void **obj )
{
TRACE( "%p, %s, %p\n", iface, debugstr_guid(riid), obj );
if (IsEqualGUID( riid, &IID__Stream ) || IsEqualGUID( riid, &IID_IDispatch ) ||
IsEqualGUID( riid, &IID_IUnknown ))
{
*obj = iface;
}
else
{
FIXME( "interface %s not implemented\n", debugstr_guid(riid) );
return E_NOINTERFACE;
}
stream_AddRef( iface );
return S_OK;
}
static HRESULT WINAPI stream_GetTypeInfoCount( _Stream *iface, UINT *count )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, count );
*count = 1;
return S_OK;
}
static HRESULT WINAPI stream_GetTypeInfo( _Stream *iface, UINT index, LCID lcid, ITypeInfo **info )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %u, %u, %p\n", stream, index, lcid, info );
return get_typeinfo(Stream_tid, info);
}
static HRESULT WINAPI stream_GetIDsOfNames( _Stream *iface, REFIID riid, LPOLESTR *names, UINT count,
LCID lcid, DISPID *dispid )
{
struct stream *stream = impl_from_Stream( iface );
HRESULT hr;
ITypeInfo *typeinfo;
TRACE( "%p, %s, %p, %u, %u, %p\n", stream, debugstr_guid(riid), names, count, lcid, dispid );
hr = get_typeinfo(Stream_tid, &typeinfo);
if(SUCCEEDED(hr))
{
hr = ITypeInfo_GetIDsOfNames(typeinfo, names, count, dispid);
ITypeInfo_Release(typeinfo);
}
return hr;
}
static HRESULT WINAPI stream_Invoke( _Stream *iface, DISPID member, REFIID riid, LCID lcid, WORD flags,
DISPPARAMS *params, VARIANT *result, EXCEPINFO *excep_info, UINT *arg_err )
{
struct stream *stream = impl_from_Stream( iface );
HRESULT hr;
ITypeInfo *typeinfo;
TRACE( "%p, %d, %s, %d, %d, %p, %p, %p, %p\n", stream, member, debugstr_guid(riid), lcid, flags, params,
result, excep_info, arg_err );
hr = get_typeinfo(Stream_tid, &typeinfo);
if(SUCCEEDED(hr))
{
hr = ITypeInfo_Invoke(typeinfo, &stream->Stream_iface, member, flags, params,
result, excep_info, arg_err);
ITypeInfo_Release(typeinfo);
}
return hr;
}
static HRESULT WINAPI stream_get_Size( _Stream *iface, ADO_LONGPTR *size )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, size );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
*size = stream->size;
return S_OK;
}
static HRESULT WINAPI stream_get_EOS( _Stream *iface, VARIANT_BOOL *eos )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, eos );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
*eos = (stream->pos >= stream->size) ? VARIANT_TRUE : VARIANT_FALSE;
return S_OK;
}
static HRESULT WINAPI stream_get_Position( _Stream *iface, ADO_LONGPTR *pos )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, pos );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
*pos = stream->pos;
return S_OK;
}
static HRESULT resize_buffer( struct stream *stream, LONG size )
{
if (stream->allocated < size)
{
BYTE *tmp;
LONG new_size = max( size, stream->allocated * 2 );
if (!(tmp = heap_realloc_zero( stream->buf, new_size ))) return E_OUTOFMEMORY;
stream->buf = tmp;
stream->allocated = new_size;
}
stream->size = size;
return S_OK;
}
static HRESULT WINAPI stream_put_Position( _Stream *iface, ADO_LONGPTR pos )
{
struct stream *stream = impl_from_Stream( iface );
HRESULT hr;
TRACE( "%p, %ld\n", stream, pos );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
if (pos < 0) return MAKE_ADO_HRESULT( adErrInvalidArgument );
if ((hr = resize_buffer( stream, stream->pos )) != S_OK) return hr;
stream->pos = pos;
return S_OK;
}
static HRESULT WINAPI stream_get_Type( _Stream *iface, StreamTypeEnum *type )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, type );
*type = stream->type;
return S_OK;
}
static HRESULT WINAPI stream_put_Type( _Stream *iface, StreamTypeEnum type )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %u\n", stream, type );
stream->type = type;
return S_OK;
}
static HRESULT WINAPI stream_get_LineSeparator( _Stream *iface, LineSeparatorEnum *sep )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, sep );
*sep = stream->sep;
return S_OK;
}
static HRESULT WINAPI stream_put_LineSeparator( _Stream *iface, LineSeparatorEnum sep )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %d\n", stream, sep );
stream->sep = sep;
return S_OK;
}
static HRESULT WINAPI stream_get_State( _Stream *iface, ObjectStateEnum *state )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, state );
*state = stream->state;
return S_OK;
}
static HRESULT WINAPI stream_get_Mode( _Stream *iface, ConnectModeEnum *mode )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %p\n", stream, mode );
*mode = stream->mode;
return S_OK;
}
static HRESULT WINAPI stream_put_Mode( _Stream *iface, ConnectModeEnum mode )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p, %u\n", stream, mode );
stream->mode = mode;
return S_OK;
}
static HRESULT WINAPI stream_get_Charset( _Stream *iface, BSTR *charset )
{
struct stream *stream = impl_from_Stream( iface );
const WCHAR *src = stream->charset ? stream->charset : L"Unicode";
BSTR dst;
TRACE( "%p, %p\n", stream, charset );
if (!(dst = SysAllocString( src ))) return E_OUTOFMEMORY;
*charset = dst;
return S_OK;
}
static HRESULT WINAPI stream_put_Charset( _Stream *iface, BSTR charset )
{
struct stream *stream = impl_from_Stream( iface );
WCHAR *str;
TRACE( "%p, %s\n", stream, debugstr_w(charset) );
if (!(str = strdupW( charset ))) return E_OUTOFMEMORY;
heap_free( stream->charset );
stream->charset = str;
return S_OK;
}
static HRESULT create_byte_array( BYTE *data, LONG len, VARIANT *ret )
{
SAFEARRAY *vector;
LONG i;
HRESULT hr;
if (!len)
{
V_VT( ret ) = VT_NULL;
return S_OK;
}
if (!(vector = SafeArrayCreateVector( VT_UI1, 0, len ))) return E_OUTOFMEMORY;
for (i = 0; i < len; i++)
{
if ((hr = SafeArrayPutElement( vector, &i, &data[i] )) != S_OK)
{
SafeArrayDestroy( vector );
return hr;
}
}
V_VT( ret ) = VT_ARRAY | VT_UI1;
V_ARRAY( ret ) = vector;
return S_OK;
}
static HRESULT WINAPI stream_Read( _Stream *iface, LONG size, VARIANT *val )
{
struct stream *stream = impl_from_Stream( iface );
HRESULT hr;
TRACE( "%p, %d, %p\n", stream, size, val );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
if (stream->type != adTypeBinary) return MAKE_ADO_HRESULT( adErrIllegalOperation );
if (size < adReadAll) return MAKE_ADO_HRESULT( adErrInvalidArgument );
if (size == adReadAll) size = stream->size - stream->pos;
else size = min( size, stream->size - stream->pos );
if ((hr = create_byte_array( stream->buf + stream->pos, size, val )) != S_OK) return hr;
stream->pos += size;
return S_OK;
}
static HRESULT WINAPI stream_Open( _Stream *iface, VARIANT src, ConnectModeEnum mode, StreamOpenOptionsEnum options,
BSTR username, BSTR password )
{
struct stream *stream = impl_from_Stream( iface );
FIXME( "%p, %s, %u, %d, %s, %p\n", stream, debugstr_variant(&src), mode, options, debugstr_w(username), password );
if (stream->state == adStateOpen) return MAKE_ADO_HRESULT( adErrObjectOpen );
stream->state = adStateOpen;
return S_OK;
}
static HRESULT WINAPI stream_Close( _Stream *iface )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p\n", stream );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
heap_free( stream->buf );
stream->buf = NULL;
stream->size = stream->allocated = stream->pos = 0;
stream->state = adStateClosed;
return S_OK;
}
static HRESULT WINAPI stream_SkipLine( _Stream *iface )
{
FIXME( "%p\n", iface );
return E_NOTIMPL;
}
static HRESULT WINAPI stream_Write( _Stream *iface, VARIANT buf )
{
struct stream *stream = impl_from_Stream( iface );
LONG bound, i;
HRESULT hr;
TRACE( "%p, %s\n", stream, debugstr_variant(&buf) );
if (stream->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
if (stream->type != adTypeBinary) return MAKE_ADO_HRESULT( adErrIllegalOperation );
if (V_VT( &buf ) != (VT_ARRAY | VT_UI1)) return MAKE_ADO_HRESULT( adErrInvalidArgument );
if ((hr = SafeArrayGetUBound( V_ARRAY( &buf ), 1, &bound )) != S_OK) return hr;
if ((hr = resize_buffer( stream, stream->size + bound + 1 )) != S_OK) return hr;
for (i = 0; i <= bound; i++)
{
if ((hr = SafeArrayGetElement( V_ARRAY( &buf ), &i, &stream->buf[stream->pos++] )) != S_OK) return hr;
}
return S_OK;
}
static HRESULT WINAPI stream_SetEOS( _Stream *iface )
{
struct stream *stream = impl_from_Stream( iface );
TRACE( "%p\n", stream );
return resize_buffer( stream, stream->pos );
}
static HRESULT WINAPI stream_CopyTo( _Stream *iface, _Stream *dst, ADO_LONGPTR size )
{
FIXME( "%p, %p, %ld\n", iface, dst, size );
return E_NOTIMPL;
}
static HRESULT WINAPI stream_Flush( _Stream *iface )
{
FIXME( "%p\n", iface );
return E_NOTIMPL;
}
static HRESULT WINAPI stream_SaveToFile( _Stream *iface, BSTR filename, SaveOptionsEnum options )
{
FIXME( "%p, %s, %u\n", iface, debugstr_w(filename), options );
return E_NOTIMPL;
}
static HRESULT WINAPI stream_LoadFromFile( _Stream *iface, BSTR filename )
{
FIXME( "%p, %s\n", iface, debugstr_w(filename) );
return E_NOTIMPL;
}
static HRESULT WINAPI stream_ReadText( _Stream *iface, LONG len, BSTR *ret )
{
struct stream *stream = impl_from_Stream( iface );
BSTR str;
TRACE( "%p, %d, %p\n", stream, len, ret );
if (len == adReadLine)
{
FIXME( "adReadLine not supported\n" );
return E_NOTIMPL;
}
if (stream->charset && wcscmp( stream->charset, L"Unicode" ))
{
FIXME( "charset %s not supported\n", debugstr_w(stream->charset) );
return E_NOTIMPL;
}
if (stream->type != adTypeText) return MAKE_ADO_HRESULT( adErrIllegalOperation );
if (len < adReadLine) return MAKE_ADO_HRESULT( adErrInvalidArgument );
if (len == adReadAll) len = (stream->size - stream->pos) / sizeof(WCHAR);
else len = min( len, stream->size - stream->pos / sizeof(WCHAR) );
if (!(str = SysAllocStringLen( NULL, len ))) return E_OUTOFMEMORY;
memcpy( str, stream->buf + stream->pos, len * sizeof(WCHAR) );
str[len] = 0;
stream->pos += len * sizeof(WCHAR);
*ret = str;
return S_OK;
}
static HRESULT WINAPI stream_WriteText( _Stream *iface, BSTR data, StreamWriteEnum options )
{
struct stream *stream = impl_from_Stream( iface );
HRESULT hr;
LONG size;
TRACE( "%p, %s, %u\n", stream, debugstr_w(data), options );
if (options != adWriteChar)
{
FIXME( "options %u not supported\n", options );
return E_NOTIMPL;
}
if (stream->charset && wcscmp( stream->charset, L"Unicode" ))
{
FIXME( "charset %s not supported\n", debugstr_w(stream->charset) );
return E_NOTIMPL;
}
if (stream->type != adTypeText) return MAKE_ADO_HRESULT( adErrIllegalOperation );
size = (lstrlenW( data ) + 1) * sizeof(WCHAR);
if ((hr = resize_buffer( stream, stream->size + size )) != S_OK) return hr;
memcpy( stream->buf + stream->pos, data, size );
stream->pos += size;
return S_OK;
}
static HRESULT WINAPI stream_Cancel( _Stream *iface )
{
FIXME( "%p\n", iface );
return E_NOTIMPL;
}
static const struct _StreamVtbl stream_vtbl =
{
stream_QueryInterface,
stream_AddRef,
stream_Release,
stream_GetTypeInfoCount,
stream_GetTypeInfo,
stream_GetIDsOfNames,
stream_Invoke,
stream_get_Size,
stream_get_EOS,
stream_get_Position,
stream_put_Position,
stream_get_Type,
stream_put_Type,
stream_get_LineSeparator,
stream_put_LineSeparator,
stream_get_State,
stream_get_Mode,
stream_put_Mode,
stream_get_Charset,
stream_put_Charset,
stream_Read,
stream_Open,
stream_Close,
stream_SkipLine,
stream_Write,
stream_SetEOS,
stream_CopyTo,
stream_Flush,
stream_SaveToFile,
stream_LoadFromFile,
stream_ReadText,
stream_WriteText,
stream_Cancel
};
HRESULT Stream_create( void **obj )
{
struct stream *stream;
if (!(stream = heap_alloc_zero( sizeof(*stream) ))) return E_OUTOFMEMORY;
stream->Stream_iface.lpVtbl = &stream_vtbl;
stream->refs = 1;
stream->type = adTypeText;
stream->sep = adCRLF;
*obj = &stream->Stream_iface;
TRACE( "returning iface %p\n", *obj );
return S_OK;
}