BViewState*
BViewState::InstantiateFromStream(BMallocIO* stream, bool endianSwap)
{
// compare stream header in canonical form
uint32 key = AttrHashString("BViewState", B_OBJECT_TYPE);
int32 version = kViewStateArchiveVersion;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
if (!ValidateStream(stream, key, version))
return NULL;
return _Sanitize(new (std::nothrow) BViewState(stream, endianSwap));
}
BColumn *
BColumn::InstantiateFromStream(BMallocIO *stream, bool endianSwap)
{
// compare stream header in canonical form
uint32 key = AttrHashString("BColumn", B_OBJECT_TYPE);
int32 version = kColumnStateArchiveVersion;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
// PRINT(("validating key %x, version %d\n", key, version));
if (!ValidateStream(stream, key, version))
return 0;
// PRINT(("instantiating column, %s\n", endianSwap ? "endian swapping," : ""));
BColumn *result = new BColumn(stream, endianSwap);
// sanity-check the resulting column
if (result->fTitle.Length() > 500
|| result->fOffset < 0
|| result->fOffset > 10000
|| result->fWidth < 0
|| result->fWidth > 10000
|| (int32)result->fAlignment < B_ALIGN_LEFT
|| (int32)result->fAlignment > B_ALIGN_CENTER
|| result->fAttrName.Length() > 500) {
PRINT(("column data not valid\n"));
delete result;
return 0;
}
#if DEBUG
else if (endianSwap)
PRINT(("Instantiated foreign column ok\n"));
#endif
return result;
}
BViewState *
BViewState::InstantiateFromStream(BMallocIO *stream, bool endianSwap)
{
// compare stream header in canonical form
uint32 key = AttrHashString("BViewState", B_OBJECT_TYPE);
int32 version = kViewStateArchiveVersion;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
if (!ValidateStream(stream, key, version))
return NULL;
BViewState *result = new BViewState(stream, endianSwap);
// do a sanity check here
if ((result->fViewMode != kListMode
&& result->fViewMode != kIconMode
&& result->fViewMode != kMiniIconMode
&& result->fViewMode != 0)
|| (result->fLastIconMode != kListMode
&& result->fLastIconMode != kIconMode
&& result->fLastIconMode != kMiniIconMode
&& result->fLastIconMode != 0)) {
PRINT(("Bad data instantiating ViewState, view mode %x, lastIconMode %x\n",
result->fViewMode, result->fLastIconMode));
delete result;
return NULL;
}
#if DEBUG
else if (endianSwap)
PRINT(("Instantiated foreign view state ok\n"));
#endif
return result;
}
BColumn*
BColumn::InstantiateFromStream(BMallocIO* stream, bool endianSwap)
{
// compare stream header in canonical form
// we can't use ValidateStream(), as we preserve backwards compatibility
int32 version;
uint32 key;
if (stream->Read(&key, sizeof(uint32)) <= 0
|| stream->Read(&version, sizeof(int32)) <=0)
return 0;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
if (key != AttrHashString("BColumn", B_OBJECT_TYPE)
|| version < kColumnStateMinArchiveVersion)
return 0;
// PRINT(("instantiating column, %s\n", endianSwap ? "endian swapping," : ""));
return _Sanitize(new (std::nothrow) BColumn(stream, version, endianSwap));
}
