PXR_NAMESPACE_OPEN_SCOPE
bool
UsdUtilsCopyLayerMetadata(const SdfLayerHandle &source,
const SdfLayerHandle &destination,
bool skipSublayers)
{
if (!TF_VERIFY(source && destination))
return false;
SdfPrimSpecHandle sourcePseudo = source->GetPseudoRoot();
SdfPrimSpecHandle destPseudo = destination->GetPseudoRoot();
std::vector<TfToken> infoKeys = sourcePseudo->ListInfoKeys();
std::vector<TfToken>::iterator last = infoKeys.end();
if (skipSublayers){
last = std::remove_if(infoKeys.begin(), last,
[](TfToken key) { return (key == SdfFieldKeys->SubLayers || key == SdfFieldKeys->SubLayerOffsets); });
}
for (auto key = infoKeys.begin(); key != last; ++key){
destPseudo->SetInfo(*key, sourcePseudo->GetInfo(*key));
}
return true;
}
// public facing API
// ----------------------------------------------------------------------------
bool
UsdUtilsStitchClipsTopology(const SdfLayerHandle& topologyLayer,
const _ClipFileVector& clipLayerFiles)
{
// XXX: This is necessary for any C++ API which may be called though
// python. Since this will spawn workers(in WorkParallelForN) which
// will need to acquire the GIL, we need to explicitly release it.
TF_PY_ALLOW_THREADS_IN_SCOPE();
// Prepare topology layer for editing
if (!_LayerIsWritable(topologyLayer)) {
return false;
} else {
topologyLayer->Clear();
}
// Open all clip layers and validate clipPath
SdfLayerRefPtrVector clipLayers;
const bool clipLayersAreValid = _OpenClipLayers(&clipLayers,
clipLayerFiles, SdfPath::AbsoluteRootPath());
if (!clipLayersAreValid
|| !_UsdUtilsStitchClipsTopologyImpl(topologyLayer, clipLayers)) {
return false;
}
topologyLayer->Save();
return true;
}
bool
UsdUtilsStitchClips(const SdfLayerHandle& resultLayer,
const _ClipFileVector& clipLayerFiles,
const SdfPath& clipPath,
const double startTimeCode,
const double endTimeCode,
const TfToken& clipSet)
{
// XXX: See comment in UsdUtilsStitchClipsTopology above.
TF_PY_ALLOW_THREADS_IN_SCOPE();
// Prepare result layer for editing
if (!_LayerIsWritable(resultLayer)) {
return false;
} else {
resultLayer->Clear();
}
// Prepare topology layer for editing, create if necessary
bool topologyPreExisting = true;
std::string topologyLayerId
= UsdUtilsGenerateClipTopologyName(resultLayer->GetIdentifier());
SdfLayerRefPtr topologyLayer = SdfLayer::FindOrOpen(topologyLayerId);
if (!topologyLayer) {
topologyPreExisting = false;
topologyLayer = SdfLayer::CreateNew(topologyLayerId);
}
if (!_LayerIsWritable(topologyLayer)) {
return false;
} else {
topologyLayer->Clear();
}
// Open all clip layers and validate clipPath
SdfLayerRefPtrVector clipLayers;
const bool clipLayersAreValid
= _OpenClipLayers(&clipLayers, clipLayerFiles, clipPath);
if (!clipLayersAreValid
|| !_UsdUtilsStitchClipsImpl(resultLayer, topologyLayer,
clipLayers, clipPath,
startTimeCode, endTimeCode,
clipSet)) {
if (!topologyPreExisting) {
TfDeleteFile(topologyLayer->GetIdentifier());
}
return false;
}
// Note that we don't apply edits until all other
// actions have completed.
topologyLayer->Save();
resultLayer->Save();
return true;
}
/* static */
void
UsdKatanaCache::_SetMutedLayers(
const UsdStageRefPtr &stage, const std::string &layerRegex)
{
// Trace this function to track its performance
TRACE_FUNCTION();
// Unmute layers that are currently muted, but not requested to be muted
SdfLayerHandleVector stageLayers = stage->GetUsedLayers();
bool regexIsEmpty = layerRegex == "" || layerRegex == "^$";
// use a better regex library?
regex_t regex;
regcomp(®ex, layerRegex.c_str(), REG_EXTENDED);
regmatch_t* rmatch = 0;
TF_FOR_ALL(stageLayer, stageLayers)
{
SdfLayerHandle layer = *stageLayer;
if (!layer) {
continue;
}
std::string layerPath = layer->GetRepositoryPath();
const std::string layerIdentifier = layer->GetIdentifier();
bool match = false;
if (!regexIsEmpty)
{
if (layer && !regexec(
®ex,
layerIdentifier.c_str(),
0, rmatch, 0))
{
match = true;
}
}
if (!match && stage->IsLayerMuted(layerIdentifier)) {
TF_DEBUG(USDKATANA_CACHE_RENDERER).Msg("{USD RENDER CACHE} "
"Unmuting Layer: '%s'\n",
layerIdentifier.c_str());
stage->UnmuteLayer(layerIdentifier);
}
if (match && !stage->IsLayerMuted(layerIdentifier)) {
TF_DEBUG(USDKATANA_CACHE_RENDERER).Msg("{USD RENDER CACHE} "
"Muting Layer: '%s'\n",
layerIdentifier.c_str());
stage->MuteLayer(layerIdentifier);
}
}
void
Sdf_ConnectionListEditor<ChildPolicy>::_OnEdit(
SdfListOpType op,
SdfSpecType specType,
const std::vector<SdfPath>& oldItems,
const std::vector<SdfPath>& newItems) const
{
if (op != SdfListOpTypeAdded and op != SdfListOpTypeExplicit) {
return;
}
const SdfPath propertyPath = GetPath();
SdfLayerHandle layer = GetLayer();
const std::set<value_type> oldItemSet(oldItems.begin(), oldItems.end());
const std::set<value_type> newItemSet(newItems.begin(), newItems.end());
// Need to remove all children in oldItems that are not in newItems.
std::vector<SdfPath> childrenToRemove;
std::set_difference(oldItemSet.begin(), oldItemSet.end(),
newItemSet.begin(), newItemSet.end(),
std::back_inserter(childrenToRemove));
TF_FOR_ALL(child, childrenToRemove) {
if (not Sdf_ChildrenUtils<ChildPolicy>::RemoveChild(
layer, propertyPath, *child)) {
const SdfPath specPath =
ChildPolicy::GetChildPath(propertyPath, *child);
TF_CODING_ERROR("Failed to remove spec at <%s>", specPath.GetText());
}
}
// Need to add all children in newItems that are not in oldItems.
std::vector<SdfPath> childrenToAdd;
std::set_difference(newItemSet.begin(), newItemSet.end(),
oldItemSet.begin(), oldItemSet.end(),
std::back_inserter(childrenToAdd));
TF_FOR_ALL(child, childrenToAdd) {
const SdfPath specPath = ChildPolicy::GetChildPath(propertyPath, *child);
if (layer->GetObjectAtPath(specPath)) {
continue;
}
if (not Sdf_ChildrenUtils<ChildPolicy>::CreateSpec(layer, specPath,
specType)) {
TF_CODING_ERROR("Failed to create spec at <%s>", specPath.GetText());
}
}
}
string
SdfComputeAssetPathRelativeToLayer(
const SdfLayerHandle& anchor,
const string& assetPath)
{
if (not anchor) {
TF_CODING_ERROR("Invalid anchor layer");
return string();
}
if (assetPath.empty()) {
TF_CODING_ERROR("Layer path is empty");
return string();
}
TRACE_FUNCTION();
ArResolver& resolver = ArGetResolver();
// Relative paths are resolved using the look-here-first scheme, in
// which we first look relative to the layer, then fall back to search
// path resolution.
string finalLayerPath = anchor->ComputeAbsolutePath(assetPath);
if (not SdfLayer::IsAnonymousLayerIdentifier(finalLayerPath)) {
if (resolver.IsSearchPath(assetPath) and
resolver.Resolve(finalLayerPath).empty())
return assetPath;
}
return finalLayerPath;
}
static void
_ProcessChildren(
const TfToken& childrenField,
const VtValue& srcChildrenValue, const VtValue& dstChildrenValue,
const SdfLayerHandle& srcLayer, const SdfPath& srcPath, bool childrenInSrc,
const SdfLayerHandle& dstLayer, const SdfPath& dstPath, bool childrenInDst,
_CopyStack* copyStack)
{
typedef typename ChildPolicy::FieldType FieldType;
typedef std::vector<FieldType> ChildrenVector;
if (!TF_VERIFY(srcChildrenValue.IsHolding<ChildrenVector>() ||
srcChildrenValue.IsEmpty()) ||
!TF_VERIFY(dstChildrenValue.IsHolding<ChildrenVector>() ||
dstChildrenValue.IsEmpty())) {
return;
}
const ChildrenVector emptyChildren;
const ChildrenVector& srcChildren = srcChildrenValue.IsEmpty() ?
emptyChildren : srcChildrenValue.UncheckedGet<ChildrenVector>();
const ChildrenVector& dstChildren = dstChildrenValue.IsEmpty() ?
emptyChildren : dstChildrenValue.UncheckedGet<ChildrenVector>();
for (size_t i = 0; i < srcChildren.size(); ++i) {
if (srcChildren[i].IsEmpty() || dstChildren[i].IsEmpty()) {
continue;
}
const SdfPath srcChildPath =
ChildPolicy::GetChildPath(srcPath, srcChildren[i]);
const SdfPath dstChildPath =
ChildPolicy::GetChildPath(dstPath, dstChildren[i]);
copyStack->emplace_back(srcChildPath, dstChildPath);
}
// Add entries to the copy stack to mark the removal of child specs
// in the destination layer that aren't included in the list of children
// to copy.
if (childrenInDst) {
const VtValue oldDstChildrenValue =
dstLayer->GetField(dstPath, childrenField);
if (!TF_VERIFY(oldDstChildrenValue.IsHolding<ChildrenVector>())) {
return;
}
for (const auto& oldDstChild :
oldDstChildrenValue.UncheckedGet<ChildrenVector>()) {
if (std::find(dstChildren.begin(), dstChildren.end(),
oldDstChild) == dstChildren.end()) {
const SdfPath oldDstChildPath =
ChildPolicy::GetChildPath(dstPath, oldDstChild);
copyStack->emplace_back(SdfPath(), oldDstChildPath);
}
}
}
}
SdfPathVector
Sdf_MarkerUtils<Spec>::GetMarkerPaths(const Spec& owner)
{
SdfPathVector paths;
const SdfLayerHandle layer = owner.GetLayer();
const SdfPathVector children = owner.template GetFieldAs<SdfPathVector>(
_MarkerPolicy::GetChildFieldKey());
TF_FOR_ALL(path, children) {
const SdfPath targetSpecPath = owner.GetPath().AppendTarget(*path);
if (layer->HasField(targetSpecPath, SdfFieldKeys->Marker)) {
paths.push_back(*path);
}
}
return paths;
}
void
SdfFileFormat::_SetLayerData(
const SdfLayerHandle& layer,
SdfAbstractDataRefPtr& data)
{
// If layer initialization has not completed, then this
// is being loaded as a new layer; otherwise we are loading
// data into an existing layer.
//
// Note that this is an optional::bool and we are checking if it has
// been set, not what its held value is.
//
const bool layerIsLoadingAsNew = !layer->_initializationWasSuccessful;
if (layerIsLoadingAsNew) {
layer->_SwapData(data);
}
else {
layer->_SetData(data);
}
}
// Returns lists of value and children field names to be handled during
// the copy process. The returned lists are sorted using the
// TfTokenFastArbitraryLessThan comparator.
static
void
_GetFieldNames(
const SdfLayerHandle& layer, const SdfPath& path,
std::vector<TfToken>* valueFields,
std::vector<TfToken>* childrenFields)
{
const SdfSchemaBase& schema = layer->GetSchema();
const std::vector<TfToken> allFields = layer->ListFields(path);
for (const TfToken& field : allFields) {
if (schema.HoldsChildren(field)) {
childrenFields->push_back(field);
}
else {
valueFields->push_back(field);
}
}
TfTokenFastArbitraryLessThan lessThan;
std::sort(valueFields->begin(), valueFields->end(), lessThan);
std::sort(childrenFields->begin(), childrenFields->end(), lessThan);
}
bool
UsdUtilsStitchClipsTemplate(const SdfLayerHandle& resultLayer,
const SdfLayerHandle& topologyLayer,
const SdfPath& clipPath,
const std::string& templatePath,
const double startTime,
const double endTime,
const double stride,
const double activeOffset,
const TfToken& clipSet)
{
// XXX: See comment in UsdUtilsStitchClipsTopology above.
TF_PY_ALLOW_THREADS_IN_SCOPE();
if (!_LayerIsWritable(resultLayer)) {
return false;
} else {
resultLayer->Clear();
}
if (!topologyLayer) {
return false;
}
// set prim level metadata
auto prim = SdfCreatePrimInLayer(resultLayer, clipPath);
const std::string topologyId
= _GetRelativePathIfPossible(topologyLayer->GetIdentifier(),
topologyLayer->GetRealPath(),
resultLayer->GetRealPath());
// set root layer metadata
_StitchClipsTopologySubLayerPath(resultLayer, topologyId);
VtDictionary clipSetDict;
clipSetDict[UsdClipsAPIInfoKeys->primPath] = clipPath.GetString();
clipSetDict[UsdClipsAPIInfoKeys->templateAssetPath] = templatePath;
clipSetDict[UsdClipsAPIInfoKeys->templateStartTime] = startTime;
clipSetDict[UsdClipsAPIInfoKeys->templateEndTime] = endTime;
clipSetDict[UsdClipsAPIInfoKeys->templateStride] = stride;
clipSetDict[UsdClipsAPIInfoKeys->manifestAssetPath] = SdfAssetPath(topologyId);
if (activeOffset != std::numeric_limits<double>::max()) {
clipSetDict[UsdClipsAPIInfoKeys->templateActiveOffset] = activeOffset;
}
VtDictionary clips;
clips[clipSet] = clipSetDict;
prim->SetInfo(UsdTokens->clips, VtValue::Take(clips));
resultLayer->SetStartTimeCode(startTime);
resultLayer->SetEndTimeCode(endTime);
resultLayer->Save();
return true;
}
bool
UsdMtlxFileFormat::ReadFromString(
const SdfLayerBasePtr& layerBase,
const std::string& str) const
{
TRACE_FUNCTION();
SdfLayerHandle layer = TfDynamic_cast<SdfLayerHandle>(layerBase);
if (!TF_VERIFY(layer)) {
return false;
}
auto stage = UsdStage::CreateInMemory();
if (!_Read(stage,
[&str](mx::DocumentPtr d) {
mx::readFromXmlString(d, str);
})) {
return false;
}
layer->TransferContent(stage->GetRootLayer());
return true;
}
// Add a (field, value) entry to the list of fields to copy as directed by
// the given policy. The value may be empty to indicate that the field
// should be removed from the destination.
static void
_AddFieldValueToCopy(
SdfSpecType specType, const TfToken& field,
const SdfLayerHandle& srcLayer, const SdfPath& srcPath, bool fieldInSrc,
const SdfLayerHandle& dstLayer, const SdfPath& dstPath, bool fieldInDst,
const SdfShouldCopyValueFn& shouldCopyValue, _FieldValueList* valueList)
{
boost::optional<VtValue> value;
if (shouldCopyValue(
specType, field,
srcLayer, srcPath, fieldInSrc, dstLayer, dstPath, fieldInDst,
&value)) {
valueList->emplace_back(
field, value ? *value : srcLayer->GetField(srcPath, field));
}
}
static void
_AddNewSpecToLayer(
const SdfLayerHandle& destLayer, const _SpecDataEntry& specData)
{
if (destLayer->HasSpec(specData.dstPath)) {
return;
}
switch (specData.specType) {
case SdfSpecTypeAttribute:
_DoAddNewPropertySpec<Sdf_AttributeChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeConnection:
_DoAddNewSpec<Sdf_AttributeConnectionChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeExpression:
_DoAddNewSpec<Sdf_ExpressionChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeMapper:
_DoAddNewSpec<Sdf_MapperChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeMapperArg:
_DoAddNewSpec<Sdf_MapperArgChildPolicy>(destLayer, specData);
break;
case SdfSpecTypePrim:
_DoAddNewPrimSpec(destLayer, specData);
break;
case SdfSpecTypeRelationship:
_DoAddNewPropertySpec<Sdf_RelationshipChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeRelationshipTarget:
_DoAddNewSpec<Sdf_RelationshipTargetChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeVariant:
_DoAddNewSpec<Sdf_VariantChildPolicy>(destLayer, specData);
break;
case SdfSpecTypeVariantSet:
_DoAddNewSpec<Sdf_VariantSetChildPolicy>(destLayer, specData);
break;
case SdfSpecTypePseudoRoot:
case SdfSpecTypeUnknown:
case SdfNumSpecTypes:
break;
}
}
static void
_RemoveSpecFromLayer(
const SdfLayerHandle& dstLayer, const _SpecDataEntry& specData)
{
switch (dstLayer->GetSpecType(specData.dstPath)) {
case SdfSpecTypeAttribute:
_DoRemoveSpec<Sdf_AttributeChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeConnection:
_DoRemoveSpec<Sdf_AttributeConnectionChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeExpression:
_DoRemoveSpec<Sdf_ExpressionChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeMapper:
_DoRemoveSpec<Sdf_MapperChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeMapperArg:
_DoRemoveSpec<Sdf_MapperArgChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypePrim:
_DoRemoveSpec<Sdf_PrimChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeRelationship:
_DoRemoveSpec<Sdf_RelationshipChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeRelationshipTarget:
_DoRemoveSpec<Sdf_RelationshipTargetChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeVariant:
_DoRemoveSpec<Sdf_VariantChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypeVariantSet:
_DoRemoveSpec<Sdf_VariantSetChildPolicy>(dstLayer, specData);
break;
case SdfSpecTypePseudoRoot:
case SdfSpecTypeUnknown:
case SdfNumSpecTypes:
break;
}
}
Sdf_SubLayerListEditor::Sdf_SubLayerListEditor(
const SdfLayerHandle& owner)
: Parent(owner->GetPseudoRoot(),
SdfFieldKeys->SubLayers, SdfListOpTypeOrdered)
{
}
static
RootPrimsProxy
_WrapGetRootPrims(const SdfLayerHandle& layer)
{
return RootPrimsProxy(layer->GetRootPrims(), "prim");
}
SdfAbstractDataConstPtr
SdfFileFormat::_GetLayerData(const SdfLayerHandle& layer)
{
return layer->_GetData();
}
static bool
_WrapIsMuted(const SdfLayerHandle &layer)
{
return layer->IsMuted();
}
bool
UsdPrim::SetPayload(const SdfLayerHandle& layer, const SdfPath& primPath) const
{
return SetMetadata(SdfFieldKeys->Payload,
SdfPayload(layer->GetIdentifier(), primPath));
}
bool
SdfCopySpec(
const SdfLayerHandle& srcLayer, const SdfPath& srcPath,
const SdfLayerHandle& dstLayer, const SdfPath& dstPath,
const SdfShouldCopyValueFn& shouldCopyValueFn,
const SdfShouldCopyChildrenFn& shouldCopyChildrenFn)
{
if (!srcLayer || !dstLayer) {
TF_CODING_ERROR("Invalid layer handle");
return false;
}
if (srcPath.IsEmpty() || dstPath.IsEmpty()) {
TF_CODING_ERROR("Invalid empty path");
return false;
}
// Validate compatible source and destination path types.
if ((srcPath.IsAbsoluteRootOrPrimPath()
|| srcPath.IsPrimVariantSelectionPath())
!= (dstPath.IsAbsoluteRootOrPrimPath()
|| dstPath.IsPrimVariantSelectionPath())
|| srcPath.IsPropertyPath() != dstPath.IsPropertyPath()
|| srcPath.IsTargetPath() != dstPath.IsTargetPath()
|| srcPath.IsMapperPath() != dstPath.IsMapperPath()
|| srcPath.IsMapperArgPath() != dstPath.IsMapperArgPath()
|| srcPath.IsExpressionPath() != dstPath.IsExpressionPath()) {
TF_CODING_ERROR("Incompatible source and destination paths");
return false;
}
// For target paths (relationship targets and connections), verify the
// destination spec already exists. See the documentation comment.
if (dstPath.IsTargetPath() && !dstLayer->HasSpec(dstPath)) {
TF_CODING_ERROR("Spec does not exist at destination target path");
return false;
}
// This function collects all of the data that will be copied for each
// spec into this list, then applies it to the layer at the very end.
// This allows us to do some analysis on the data first.
_CopyEntryList dataToCopy;
// Create a stack of source/dest copy requests, initially populated with
// the passed parameters. The copy routine will add additional requests
// as needed to handle children etc... and runs until the stack is empty.
_CopyStack copyStack(1, _CopyStackEntry(srcPath, dstPath));
while (!copyStack.empty()) {
const _CopyStackEntry toCopy = copyStack.front();
copyStack.pop_front();
// If the source path is empty, it indicates that the spec at the
// destination path should be removed. Add an entry to the queue
// to reflect that.
if (toCopy.srcPath.IsEmpty()) {
_SpecDataEntry removeEntry(toCopy.dstPath, SdfSpecTypeUnknown);
dataToCopy.push_back(removeEntry);
continue;
}
// Figure out the concrete type of the spec we're copying. The spec type
// dictates copying behavior below.
const SdfSpecType specType = srcLayer->GetSpecType(toCopy.srcPath);
if (specType == SdfSpecTypeUnknown) {
TF_CODING_ERROR("Cannot copy unknown spec at <%s> from layer <%s>",
srcPath.GetText(), srcLayer->GetIdentifier().c_str());
return false;
}
_SpecDataEntry copyEntry(toCopy.dstPath, specType);
// Determine what data is present for the current source and dest specs
// and what needs to be copied. Divide the present fields into those
// that contain values and those that index children specs.
std::vector<TfToken> dstValueFields;
std::vector<TfToken> dstChildrenFields;
_GetFieldNames(
dstLayer, toCopy.dstPath, &dstValueFields, &dstChildrenFields);
std::vector<TfToken> srcValueFields;
std::vector<TfToken> srcChildrenFields;
_GetFieldNames(
srcLayer, toCopy.srcPath, &srcValueFields, &srcChildrenFields);
// From the list of value fields, retrieve all values that the copy
// policy says we need to copy over to the destination.
_ForEachField(
srcValueFields, dstValueFields,
[&](const TfToken& field, bool fieldInSrc, bool fieldInDst) {
_AddFieldValueToCopy(
specType, field,
srcLayer, toCopy.srcPath, fieldInSrc,
dstLayer, toCopy.dstPath, fieldInDst,
shouldCopyValueFn, ©Entry.dataToCopy);
});
// Add an entry for all of the data we're copying for this spec.
dataToCopy.push_back(copyEntry);
// Now add any children specs that need to be copied to our
// copy stack.
_ForEachField(
srcChildrenFields, dstChildrenFields,
[&](const TfToken& field, bool fieldInSrc, bool fieldInDst) {
_ProcessChildField(
field,
srcLayer, toCopy.srcPath, fieldInSrc,
dstLayer, toCopy.dstPath, fieldInDst,
shouldCopyChildrenFn, ©Stack);
});
}
// Now that we have all the data we want to copy, set it into the
// destination layer.
SdfChangeBlock block;
for (const _SpecDataEntry& specData : dataToCopy) {
if (specData.specType == SdfSpecTypeUnknown) {
_RemoveSpecFromLayer(dstLayer, specData);
}
else {
_AddNewSpecToLayer(dstLayer, specData);
}
for (const _FieldValuePair& fieldValue : specData.dataToCopy) {
dstLayer->SetField(
specData.dstPath, fieldValue.first, fieldValue.second);
}
}
return true;
}
static void
_ProcessChildField(
const TfToken& childField,
const SdfLayerHandle& srcLayer, const SdfPath& srcPath, bool childrenInSrc,
const SdfLayerHandle& dstLayer, const SdfPath& dstPath, bool childrenInDst,
const SdfShouldCopyChildrenFn& shouldCopyChildren, _CopyStack* copyStack)
{
boost::optional<VtValue> srcChildrenToCopy, dstChildrenToCopy;
if (!shouldCopyChildren(
childField,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
&srcChildrenToCopy, &dstChildrenToCopy)) {
return;
}
if (!srcChildrenToCopy || !dstChildrenToCopy) {
srcChildrenToCopy = srcLayer->GetField(srcPath, childField);
dstChildrenToCopy = srcChildrenToCopy;
}
const VtValue& srcChildren = *srcChildrenToCopy;
const VtValue& dstChildren = *dstChildrenToCopy;
if (childField == SdfChildrenKeys->ConnectionChildren) {
_ProcessChildren<Sdf_AttributeConnectionChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->MapperChildren) {
_ProcessChildren<Sdf_MapperChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->MapperArgChildren) {
_ProcessChildren<Sdf_MapperArgChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->ExpressionChildren) {
_ProcessChildren<Sdf_ExpressionChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->RelationshipTargetChildren) {
_ProcessChildren<Sdf_RelationshipTargetChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->VariantChildren) {
_ProcessChildren<Sdf_VariantChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->VariantSetChildren) {
_ProcessChildren<Sdf_VariantSetChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->PropertyChildren) {
_ProcessChildren<Sdf_PropertyChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
if (childField == SdfChildrenKeys->PrimChildren) {
_ProcessChildren<Sdf_PrimChildPolicy>(
childField, srcChildren, dstChildren,
srcLayer, srcPath, childrenInSrc, dstLayer, dstPath, childrenInDst,
copyStack);
return;
}
TF_CODING_ERROR("Unknown child field '%s'", childField.GetText());
}
void
Sdf_ConnectionListEditor<ChildPolicy>::_OnEditShared(
SdfListOpType op,
SdfSpecType specType,
const std::vector<SdfPath>& oldItems,
const std::vector<SdfPath>& newItems) const
{
// XXX The following code tries to manage lifetime of the target
// specs associated with this list, but it slightly buggy: if
// multiple lists mention the same target -- ex. if a target is
// added, appended, and prepended -- then this proxy for a single
// list has no way to know if the target also exists in those
// other lists, and so it cannot mangae lifetime on its own.
if (op == SdfListOpTypeOrdered || op == SdfListOpTypeDeleted) {
// These ops do not affect target spec lifetime, so there's
// nothing to do.
return;
}
const SdfPath propertyPath = GetPath();
SdfLayerHandle layer = GetLayer();
const std::set<value_type> oldItemSet(oldItems.begin(), oldItems.end());
const std::set<value_type> newItemSet(newItems.begin(), newItems.end());
// Need to remove all children in oldItems that are not in newItems.
std::vector<SdfPath> childrenToRemove;
std::set_difference(oldItemSet.begin(), oldItemSet.end(),
newItemSet.begin(), newItemSet.end(),
std::back_inserter(childrenToRemove));
TF_FOR_ALL(child, childrenToRemove) {
if (!Sdf_ChildrenUtils<ChildPolicy>::RemoveChild(
layer, propertyPath, *child)) {
// Some data backends procedurally generate the children specs based
// on the listops as an optimization, so if we failed to remove a
// child here, it could be that. If no spec is present, then we
// consider things to be okay and do not issue an error.
const SdfPath specPath =
ChildPolicy::GetChildPath(propertyPath, *child);
if (layer->GetObjectAtPath(specPath)) {
TF_CODING_ERROR("Failed to remove spec at <%s>",
specPath.GetText());
}
}
}
// Need to add all children in newItems that are not in oldItems.
std::vector<SdfPath> childrenToAdd;
std::set_difference(newItemSet.begin(), newItemSet.end(),
oldItemSet.begin(), oldItemSet.end(),
std::back_inserter(childrenToAdd));
TF_FOR_ALL(child, childrenToAdd) {
const SdfPath specPath = ChildPolicy::GetChildPath(propertyPath, *child);
if (layer->GetObjectAtPath(specPath)) {
continue;
}
if (!Sdf_ChildrenUtils<ChildPolicy>::CreateSpec(layer, specPath,
specType)) {
TF_CODING_ERROR("Failed to create spec at <%s>", specPath.GetText());
}
}
}