Function flattenFilenames

source/MaterialXFormat/Util.cpp:146–206

}

void flattenFilenames(DocumentPtr doc, const FileSearchPath& searchPath, StringResolverPtr customResolver)
{
    for (ElementPtr elem : doc->traverseTree())
    {
        ValueElementPtr valueElem = elem->asA<ValueElement>();
        if (!valueElem || valueElem->getType() != FILENAME_TYPE_STRING)
        {
            continue;
        }

        FilePath unresolvedValue(valueElem->getValueString());
        if (unresolvedValue.isEmpty())
        {
            continue;
        }
        StringResolverPtr elementResolver = elem->createStringResolver();
        // If the path is already absolute then don't allow an additional prefix
        // as this would make the path invalid.
        if (unresolvedValue.isAbsolute())
        {
            elementResolver->setFilePrefix(EMPTY_STRING);
        }
        string resolvedString = valueElem->getResolvedValueString(elementResolver);

        // Convert relative to absolute pathing if the file is not already found
        if (!searchPath.isEmpty())
        {
            FilePath resolvedValue(resolvedString);
            if (!resolvedValue.isAbsolute())
            {
                for (size_t i = 0; i < searchPath.size(); i++)
                {
                    FilePath testPath = searchPath[i] / resolvedValue;
                    testPath = testPath.getNormalized();
                    if (testPath.exists())
                    {
                        resolvedString = testPath.asString();
                        break;
                    }
                }
            }
        }

        // Apply any custom filename resolver
        if (customResolver && customResolver->isResolvedType(FILENAME_TYPE_STRING))
        {
            resolvedString = customResolver->resolve(resolvedString, FILENAME_TYPE_STRING);
        }

        valueElem->setValueString(resolvedString);
    }

    // Remove any file prefix attributes
    for (ElementPtr elem : doc->traverseTree())
    {
        if (elem->hasFilePrefix())
        {
            elem->removeAttribute(Element::FILE_PREFIX_ATTRIBUTE);