mirror of
https://github.com/lighttransport/tinyusdz.git
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Add secure, dependency-free MaterialX XML parser to replace pugixml
Implement a custom XML parser specifically designed for MaterialX documents with built-in security features and no external dependencies. This parser will replace pugixml in usdMtlx to improve security and reduce dependencies. Features: - Hand-written XML tokenizer with security limits (max string/name length) - Simple DOM parser optimized for MaterialX structure - MaterialX-specific document object model - pugixml-compatible adapter for easy migration - Comprehensive test suite and examples Security improvements: - Bounds checking on all string operations - Maximum nesting depth limits (1000 levels) - Safe entity handling (HTML entities) - No buffer overflows or out-of-bounds access - Memory limits enforced (1MB text, 64KB strings) The parser supports MaterialX versions 1.36, 1.37, and 1.38. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Syoyo Fujita
56
sandbox/mtlx-parser/CMakeLists.txt
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56
sandbox/mtlx-parser/CMakeLists.txt
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cmake_minimum_required(VERSION 3.10)
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project(mtlx-parser)
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set(CMAKE_CXX_STANDARD 14)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# Add include directories
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include_directories(include)
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# Source files
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set(SOURCES
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src/mtlx-xml-tokenizer.cc
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src/mtlx-xml-parser.cc
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src/mtlx-dom.cc
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src/mtlx-simple-parser.cc
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)
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# Header files
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set(HEADERS
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include/mtlx-xml-tokenizer.hh
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include/mtlx-xml-parser.hh
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include/mtlx-dom.hh
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)
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# Create static library
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add_library(mtlx-parser STATIC ${SOURCES})
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# Test executable
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add_executable(test_parser tests/test_parser.cc)
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target_link_libraries(test_parser mtlx-parser)
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# Example program to parse MaterialX files
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add_executable(parse_mtlx examples/parse_mtlx.cc)
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target_link_libraries(parse_mtlx mtlx-parser)
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# Test adapter
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add_executable(test_adapter tests/test_adapter.cc)
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target_link_libraries(test_adapter mtlx-parser)
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# Enable warnings
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if(MSVC)
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target_compile_options(mtlx-parser PRIVATE /W4)
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target_compile_options(test_parser PRIVATE /W4)
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target_compile_options(parse_mtlx PRIVATE /W4)
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else()
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target_compile_options(mtlx-parser PRIVATE -Wall -Wextra -Wpedantic)
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target_compile_options(test_parser PRIVATE -Wall -Wextra -Wpedantic)
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target_compile_options(parse_mtlx PRIVATE -Wall -Wextra -Wpedantic)
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endif()
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# Add security flags
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if(NOT MSVC)
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target_compile_options(mtlx-parser PRIVATE -fstack-protector-strong -D_FORTIFY_SOURCE=2)
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target_compile_options(test_parser PRIVATE -fstack-protector-strong -D_FORTIFY_SOURCE=2)
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target_compile_options(parse_mtlx PRIVATE -fstack-protector-strong -D_FORTIFY_SOURCE=2)
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endif()
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123
sandbox/mtlx-parser/README.md
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123
sandbox/mtlx-parser/README.md
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# MaterialX Parser
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A secure, dependency-free, C++14 XML parser specifically designed for MaterialX documents. This parser replaces pugixml in TinyUSDZ's usdMtlx implementation.
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## Features
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- **Security-focused**: Built-in bounds checking, memory limits, and no buffer overflows
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- **No dependencies**: Pure C++14 implementation without external libraries
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- **MaterialX-specific**: Optimized for parsing MaterialX documents
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- **Drop-in replacement**: Provides pugixml-compatible adapter for easy migration
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- **Fast and lightweight**: Minimal memory footprint
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## Architecture
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The parser consists of several layers:
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1. **XML Tokenizer** (`mtlx-xml-tokenizer.hh/cc`): Low-level tokenization with security limits
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2. **Simple Parser** (`mtlx-simple-parser.hh/cc`): Builds a lightweight DOM tree
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3. **MaterialX DOM** (`mtlx-dom.hh/cc`): MaterialX-specific document object model
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4. **USD Adapter** (`mtlx-usd-adapter.hh`): pugixml-compatible interface for usdMtlx
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## Usage
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### Basic Parsing
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```cpp
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#include "mtlx-simple-parser.hh"
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tinyusdz::mtlx::SimpleXMLParser parser;
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if (parser.Parse(xml_string)) {
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auto root = parser.GetRoot();
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// Process the document...
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}
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```
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### Using the pugixml-compatible Adapter
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```cpp
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#include "mtlx-usd-adapter.hh"
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// Use like pugixml
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tinyusdz::mtlx::pugi::xml_document doc;
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tinyusdz::mtlx::pugi::xml_parse_result result = doc.load_string(xml);
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if (result) {
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tinyusdz::mtlx::pugi::xml_node root = doc.child("materialx");
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// Process nodes...
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}
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```
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### MaterialX DOM
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```cpp
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#include "mtlx-dom.hh"
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tinyusdz::mtlx::MtlxDocument doc;
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if (doc.ParseFromFile("material.mtlx")) {
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for (const auto& shader : doc.GetNodes()) {
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std::cout << "Shader: " << shader->GetName() << std::endl;
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}
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}
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```
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## Security Features
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- Maximum name length: 256 characters
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- Maximum string length: 64KB
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- Maximum text content: 1MB
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- Maximum nesting depth: 1000 levels
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- No dynamic memory allocation beyond limits
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- Safe entity handling (HTML entities)
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- No external file access
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## Building
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```bash
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mkdir build && cd build
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cmake ..
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make
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```
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Run tests:
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```bash
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./test_parser
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./test_adapter
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```
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Parse a MaterialX file:
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```bash
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./parse_mtlx material.mtlx
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```
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## Integration with usdMtlx
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To replace pugixml in usdMtlx:
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1. Include `mtlx-usd-adapter.hh` instead of `pugixml.hpp`
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2. Use the namespace aliases provided
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3. The API is compatible with basic pugixml usage
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Example migration:
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```cpp
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// Before (with pugixml)
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#include "pugixml.hpp"
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pugi::xml_document doc;
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pugi::xml_parse_result result = doc.load_string(xml);
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// After (with mtlx-parser)
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#include "mtlx-usd-adapter.hh"
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tinyusdz::mtlx::pugi::xml_document doc;
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tinyusdz::mtlx::pugi::xml_parse_result result = doc.load_string(xml);
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```
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## Limitations
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- Supports MaterialX 1.36, 1.37, and 1.38
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- XML namespaces are not fully supported (MaterialX doesn't use them)
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- No XPath support (not needed for MaterialX)
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- Read-only parsing (no DOM manipulation)
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## License
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Apache 2.0
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289
sandbox/mtlx-parser/examples/parse_mtlx.cc
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289
sandbox/mtlx-parser/examples/parse_mtlx.cc
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// SPDX-License-Identifier: Apache 2.0
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// Example program to parse MaterialX files
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#include "../include/mtlx-dom.hh"
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#include <iostream>
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#include <iomanip>
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using namespace tinyusdz::mtlx;
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void print_indent(int level) {
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for (int i = 0; i < level; ++i) {
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std::cout << " ";
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}
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}
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void print_value(const MtlxValue& value) {
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switch (value.type) {
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case MtlxValue::TYPE_BOOL:
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std::cout << (value.bool_val ? "true" : "false");
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break;
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case MtlxValue::TYPE_INT:
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std::cout << value.int_val;
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break;
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case MtlxValue::TYPE_FLOAT:
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std::cout << value.float_val;
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break;
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case MtlxValue::TYPE_STRING:
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std::cout << "\"" << value.string_val << "\"";
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break;
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case MtlxValue::TYPE_FLOAT_VECTOR:
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std::cout << "[";
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for (size_t i = 0; i < value.float_vec.size(); ++i) {
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if (i > 0) std::cout << ", ";
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std::cout << value.float_vec[i];
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}
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std::cout << "]";
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break;
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case MtlxValue::TYPE_INT_VECTOR:
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std::cout << "[";
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for (size_t i = 0; i < value.int_vec.size(); ++i) {
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if (i > 0) std::cout << ", ";
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std::cout << value.int_vec[i];
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}
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std::cout << "]";
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break;
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case MtlxValue::TYPE_STRING_VECTOR:
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std::cout << "[";
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for (size_t i = 0; i < value.string_vec.size(); ++i) {
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if (i > 0) std::cout << ", ";
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std::cout << "\"" << value.string_vec[i] << "\"";
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}
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std::cout << "]";
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break;
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default:
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std::cout << "(none)";
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break;
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}
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}
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void print_input(MtlxInputPtr input, int indent) {
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print_indent(indent);
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std::cout << "Input: " << input->GetName();
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if (!input->GetType().empty()) {
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std::cout << " (type: " << input->GetType() << ")";
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}
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if (!input->GetNodeName().empty()) {
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std::cout << " -> node: " << input->GetNodeName();
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if (!input->GetOutput().empty()) {
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std::cout << "." << input->GetOutput();
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}
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} else if (!input->GetInterfaceName().empty()) {
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std::cout << " -> interface: " << input->GetInterfaceName();
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} else {
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std::cout << " = ";
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print_value(input->GetValue());
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}
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std::cout << std::endl;
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}
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void print_node(MtlxNodePtr node, int indent) {
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print_indent(indent);
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std::cout << "Node: " << node->GetName()
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<< " [" << node->GetCategory() << "]";
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if (!node->GetType().empty()) {
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std::cout << " -> " << node->GetType();
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}
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std::cout << std::endl;
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for (const auto& input : node->GetInputs()) {
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print_input(input, indent + 1);
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}
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}
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void print_nodegraph(MtlxNodeGraphPtr ng, int indent) {
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print_indent(indent);
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std::cout << "NodeGraph: " << ng->GetName() << std::endl;
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// Print inputs
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if (!ng->GetInputs().empty()) {
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print_indent(indent + 1);
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std::cout << "Inputs:" << std::endl;
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for (const auto& input : ng->GetInputs()) {
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print_input(input, indent + 2);
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}
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}
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// Print nodes
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if (!ng->GetNodes().empty()) {
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print_indent(indent + 1);
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std::cout << "Nodes:" << std::endl;
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for (const auto& node : ng->GetNodes()) {
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print_node(node, indent + 2);
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}
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}
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// Print outputs
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if (!ng->GetOutputs().empty()) {
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print_indent(indent + 1);
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std::cout << "Outputs:" << std::endl;
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for (const auto& output : ng->GetOutputs()) {
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print_indent(indent + 2);
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std::cout << "Output: " << output->GetName();
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if (!output->GetType().empty()) {
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std::cout << " (type: " << output->GetType() << ")";
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}
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if (!output->GetNodeName().empty()) {
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std::cout << " -> node: " << output->GetNodeName();
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if (!output->GetOutput().empty()) {
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std::cout << "." << output->GetOutput();
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}
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}
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std::cout << std::endl;
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}
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}
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}
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void print_material(MtlxMaterialPtr mat, int indent) {
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print_indent(indent);
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std::cout << "Material: " << mat->GetName();
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if (!mat->GetType().empty()) {
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std::cout << " (type: " << mat->GetType() << ")";
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}
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std::cout << std::endl;
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if (!mat->GetSurfaceShader().empty()) {
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print_indent(indent + 1);
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std::cout << "Surface Shader: " << mat->GetSurfaceShader() << std::endl;
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}
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if (!mat->GetDisplacementShader().empty()) {
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print_indent(indent + 1);
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std::cout << "Displacement Shader: " << mat->GetDisplacementShader() << std::endl;
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}
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if (!mat->GetVolumeShader().empty()) {
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print_indent(indent + 1);
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std::cout << "Volume Shader: " << mat->GetVolumeShader() << std::endl;
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}
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}
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int main(int argc, char** argv) {
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if (argc < 2) {
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std::cerr << "Usage: " << argv[0] << " <materialx_file.mtlx>" << std::endl;
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// If no file provided, create and parse a sample
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std::cout << "\nNo file provided. Parsing sample MaterialX document..." << std::endl;
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const char* sample = R"(<?xml version="1.0"?>
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<materialx version="1.38" colorspace="lin_rec709">
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<!-- Texture nodegraph -->
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<nodegraph name="NG_marble_texture">
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<input name="base_color_file" type="filename" value="marble_diffuse.png"/>
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<input name="roughness_file" type="filename" value="marble_roughness.png"/>
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<image name="base_color_image" type="color3">
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<input name="file" type="filename" interfacename="base_color_file"/>
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<input name="uaddressmode" type="string" value="periodic"/>
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<input name="vaddressmode" type="string" value="periodic"/>
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</image>
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<image name="roughness_image" type="float">
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<input name="file" type="filename" interfacename="roughness_file"/>
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<input name="uaddressmode" type="string" value="periodic"/>
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<input name="vaddressmode" type="string" value="periodic"/>
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</image>
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<output name="base_color_out" type="color3" nodename="base_color_image"/>
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<output name="roughness_out" type="float" nodename="roughness_image"/>
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</nodegraph>
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<!-- Shader -->
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<standard_surface name="SR_marble" type="surfaceshader">
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<input name="base" type="float" value="0.8"/>
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<input name="base_color" type="color3" nodename="NG_marble_texture" output="base_color_out"/>
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<input name="specular" type="float" value="1.0"/>
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<input name="specular_roughness" type="float" nodename="NG_marble_texture" output="roughness_out"/>
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<input name="metalness" type="float" value="0.0"/>
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<input name="subsurface" type="float" value="0.3"/>
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<input name="subsurface_color" type="color3" value="0.9, 0.9, 0.8"/>
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</standard_surface>
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<!-- Material -->
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<surfacematerial name="M_marble" type="material">
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<shaderref name="surfaceshader" node="SR_marble"/>
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</surfacematerial>
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</materialx>
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)";
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MtlxDocument doc;
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if (!doc.ParseFromXML(sample)) {
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std::cerr << "Error: " << doc.GetError() << std::endl;
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return 1;
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}
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std::cout << "\n=== MaterialX Document ===" << std::endl;
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std::cout << "Version: " << doc.GetVersion() << std::endl;
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if (!doc.GetColorSpace().empty()) {
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std::cout << "ColorSpace: " << doc.GetColorSpace() << std::endl;
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}
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if (!doc.GetNamespace().empty()) {
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std::cout << "Namespace: " << doc.GetNamespace() << std::endl;
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}
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std::cout << "\n--- NodeGraphs ---" << std::endl;
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for (const auto& ng : doc.GetNodeGraphs()) {
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print_nodegraph(ng, 0);
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}
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std::cout << "\n--- Shaders ---" << std::endl;
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for (const auto& node : doc.GetNodes()) {
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print_node(node, 0);
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}
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std::cout << "\n--- Materials ---" << std::endl;
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for (const auto& mat : doc.GetMaterials()) {
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print_material(mat, 0);
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}
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if (!doc.GetWarning().empty()) {
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std::cout << "\nWarnings:\n" << doc.GetWarning() << std::endl;
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}
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return 0;
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}
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// Parse file from command line
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MtlxDocument doc;
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if (!doc.ParseFromFile(argv[1])) {
|
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std::cerr << "Error: " << doc.GetError() << std::endl;
|
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return 1;
|
||||
}
|
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|
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std::cout << "=== MaterialX Document: " << argv[1] << " ===" << std::endl;
|
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std::cout << "Version: " << doc.GetVersion() << std::endl;
|
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if (!doc.GetColorSpace().empty()) {
|
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std::cout << "ColorSpace: " << doc.GetColorSpace() << std::endl;
|
||||
}
|
||||
if (!doc.GetNamespace().empty()) {
|
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std::cout << "Namespace: " << doc.GetNamespace() << std::endl;
|
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}
|
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|
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std::cout << "\n--- NodeGraphs ---" << std::endl;
|
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for (const auto& ng : doc.GetNodeGraphs()) {
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print_nodegraph(ng, 0);
|
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}
|
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|
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std::cout << "\n--- Shaders ---" << std::endl;
|
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for (const auto& node : doc.GetNodes()) {
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print_node(node, 0);
|
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}
|
||||
|
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std::cout << "\n--- Materials ---" << std::endl;
|
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for (const auto& mat : doc.GetMaterials()) {
|
||||
print_material(mat, 0);
|
||||
}
|
||||
|
||||
if (!doc.GetWarning().empty()) {
|
||||
std::cout << "\nWarnings:\n" << doc.GetWarning() << std::endl;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
306
sandbox/mtlx-parser/include/mtlx-dom.hh
Normal file
306
sandbox/mtlx-parser/include/mtlx-dom.hh
Normal file
@@ -0,0 +1,306 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// MaterialX Document Object Model
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "mtlx-xml-parser.hh"
|
||||
#include <vector>
|
||||
#include <map>
|
||||
#include <variant>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
// Forward declarations
|
||||
class MtlxElement;
|
||||
class MtlxNode;
|
||||
class MtlxInput;
|
||||
class MtlxOutput;
|
||||
class MtlxNodeGraph;
|
||||
class MtlxMaterial;
|
||||
class MtlxDocument;
|
||||
|
||||
using MtlxElementPtr = std::shared_ptr<MtlxElement>;
|
||||
using MtlxNodePtr = std::shared_ptr<MtlxNode>;
|
||||
using MtlxInputPtr = std::shared_ptr<MtlxInput>;
|
||||
using MtlxOutputPtr = std::shared_ptr<MtlxOutput>;
|
||||
using MtlxNodeGraphPtr = std::shared_ptr<MtlxNodeGraph>;
|
||||
using MtlxMaterialPtr = std::shared_ptr<MtlxMaterial>;
|
||||
using MtlxDocumentPtr = std::shared_ptr<MtlxDocument>;
|
||||
|
||||
// MaterialX value types - using tagged union for C++14 compatibility
|
||||
struct MtlxValue {
|
||||
enum Type {
|
||||
TYPE_NONE,
|
||||
TYPE_BOOL,
|
||||
TYPE_INT,
|
||||
TYPE_FLOAT,
|
||||
TYPE_STRING,
|
||||
TYPE_FLOAT_VECTOR,
|
||||
TYPE_INT_VECTOR,
|
||||
TYPE_STRING_VECTOR
|
||||
};
|
||||
|
||||
Type type = TYPE_NONE;
|
||||
|
||||
// Value storage
|
||||
bool bool_val = false;
|
||||
int int_val = 0;
|
||||
float float_val = 0.0f;
|
||||
std::string string_val;
|
||||
std::vector<float> float_vec;
|
||||
std::vector<int> int_vec;
|
||||
std::vector<std::string> string_vec;
|
||||
|
||||
MtlxValue() = default;
|
||||
explicit MtlxValue(bool v) : type(TYPE_BOOL), bool_val(v) {}
|
||||
explicit MtlxValue(int v) : type(TYPE_INT), int_val(v) {}
|
||||
explicit MtlxValue(float v) : type(TYPE_FLOAT), float_val(v) {}
|
||||
explicit MtlxValue(const std::string& v) : type(TYPE_STRING), string_val(v) {}
|
||||
explicit MtlxValue(const std::vector<float>& v) : type(TYPE_FLOAT_VECTOR), float_vec(v) {}
|
||||
explicit MtlxValue(const std::vector<int>& v) : type(TYPE_INT_VECTOR), int_vec(v) {}
|
||||
explicit MtlxValue(const std::vector<std::string>& v) : type(TYPE_STRING_VECTOR), string_vec(v) {}
|
||||
};
|
||||
|
||||
// Base class for all MaterialX elements
|
||||
class MtlxElement {
|
||||
public:
|
||||
MtlxElement() = default;
|
||||
virtual ~MtlxElement() = default;
|
||||
|
||||
// Common attributes
|
||||
const std::string& GetName() const { return name_; }
|
||||
void SetName(const std::string& name) { name_ = name; }
|
||||
|
||||
const std::string& GetType() const { return type_; }
|
||||
void SetType(const std::string& type) { type_ = type; }
|
||||
|
||||
const std::string& GetNodeDef() const { return nodedef_; }
|
||||
void SetNodeDef(const std::string& nodedef) { nodedef_ = nodedef; }
|
||||
|
||||
// Value access
|
||||
const MtlxValue& GetValue() const { return value_; }
|
||||
void SetValue(const MtlxValue& value) { value_ = value; }
|
||||
|
||||
// Get value as specific type
|
||||
bool GetValueAsBool(bool& out) const {
|
||||
if (value_.type == MtlxValue::TYPE_BOOL) {
|
||||
out = value_.bool_val;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool GetValueAsInt(int& out) const {
|
||||
if (value_.type == MtlxValue::TYPE_INT) {
|
||||
out = value_.int_val;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool GetValueAsFloat(float& out) const {
|
||||
if (value_.type == MtlxValue::TYPE_FLOAT) {
|
||||
out = value_.float_val;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool GetValueAsString(std::string& out) const {
|
||||
if (value_.type == MtlxValue::TYPE_STRING) {
|
||||
out = value_.string_val;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool GetValueAsFloatVector(std::vector<float>& out) const {
|
||||
if (value_.type == MtlxValue::TYPE_FLOAT_VECTOR) {
|
||||
out = value_.float_vec;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse from XML node
|
||||
virtual bool ParseFromXML(XMLNodePtr xml_node);
|
||||
|
||||
// Get element type name
|
||||
virtual std::string GetElementType() const { return "element"; }
|
||||
|
||||
protected:
|
||||
std::string name_;
|
||||
std::string type_;
|
||||
std::string nodedef_;
|
||||
MtlxValue value_;
|
||||
std::map<std::string, std::string> extra_attributes_;
|
||||
};
|
||||
|
||||
// Input element
|
||||
class MtlxInput : public MtlxElement {
|
||||
public:
|
||||
MtlxInput() = default;
|
||||
|
||||
// Input-specific attributes
|
||||
const std::string& GetNodeName() const { return nodename_; }
|
||||
void SetNodeName(const std::string& nodename) { nodename_ = nodename; }
|
||||
|
||||
const std::string& GetOutput() const { return output_; }
|
||||
void SetOutput(const std::string& output) { output_ = output; }
|
||||
|
||||
const std::string& GetInterfaceName() const { return interfacename_; }
|
||||
void SetInterfaceName(const std::string& name) { interfacename_ = name; }
|
||||
|
||||
const std::string& GetChannels() const { return channels_; }
|
||||
void SetChannels(const std::string& channels) { channels_ = channels; }
|
||||
|
||||
bool ParseFromXML(XMLNodePtr xml_node) override;
|
||||
std::string GetElementType() const override { return "input"; }
|
||||
|
||||
private:
|
||||
std::string nodename_;
|
||||
std::string output_;
|
||||
std::string interfacename_;
|
||||
std::string channels_;
|
||||
};
|
||||
|
||||
// Output element
|
||||
class MtlxOutput : public MtlxElement {
|
||||
public:
|
||||
MtlxOutput() = default;
|
||||
|
||||
// Output-specific attributes
|
||||
const std::string& GetNodeName() const { return nodename_; }
|
||||
void SetNodeName(const std::string& nodename) { nodename_ = nodename; }
|
||||
|
||||
const std::string& GetOutput() const { return output_; }
|
||||
void SetOutput(const std::string& output) { output_ = output; }
|
||||
|
||||
bool ParseFromXML(XMLNodePtr xml_node) override;
|
||||
std::string GetElementType() const override { return "output"; }
|
||||
|
||||
private:
|
||||
std::string nodename_;
|
||||
std::string output_;
|
||||
};
|
||||
|
||||
// Node element
|
||||
class MtlxNode : public MtlxElement {
|
||||
public:
|
||||
MtlxNode() = default;
|
||||
|
||||
// Node-specific attributes
|
||||
const std::string& GetCategory() const { return category_; }
|
||||
void SetCategory(const std::string& category) { category_ = category; }
|
||||
|
||||
// Inputs
|
||||
void AddInput(MtlxInputPtr input) { inputs_.push_back(input); }
|
||||
const std::vector<MtlxInputPtr>& GetInputs() const { return inputs_; }
|
||||
MtlxInputPtr GetInput(const std::string& name) const;
|
||||
|
||||
bool ParseFromXML(XMLNodePtr xml_node) override;
|
||||
std::string GetElementType() const override { return "node"; }
|
||||
|
||||
private:
|
||||
std::string category_;
|
||||
std::vector<MtlxInputPtr> inputs_;
|
||||
};
|
||||
|
||||
// NodeGraph element
|
||||
class MtlxNodeGraph : public MtlxElement {
|
||||
public:
|
||||
MtlxNodeGraph() = default;
|
||||
|
||||
// Nodes
|
||||
void AddNode(MtlxNodePtr node) { nodes_.push_back(node); }
|
||||
const std::vector<MtlxNodePtr>& GetNodes() const { return nodes_; }
|
||||
MtlxNodePtr GetNode(const std::string& name) const;
|
||||
|
||||
// Inputs
|
||||
void AddInput(MtlxInputPtr input) { inputs_.push_back(input); }
|
||||
const std::vector<MtlxInputPtr>& GetInputs() const { return inputs_; }
|
||||
|
||||
// Outputs
|
||||
void AddOutput(MtlxOutputPtr output) { outputs_.push_back(output); }
|
||||
const std::vector<MtlxOutputPtr>& GetOutputs() const { return outputs_; }
|
||||
|
||||
bool ParseFromXML(XMLNodePtr xml_node) override;
|
||||
std::string GetElementType() const override { return "nodegraph"; }
|
||||
|
||||
private:
|
||||
std::vector<MtlxNodePtr> nodes_;
|
||||
std::vector<MtlxInputPtr> inputs_;
|
||||
std::vector<MtlxOutputPtr> outputs_;
|
||||
};
|
||||
|
||||
// Material element (surfacematerial, volumematerial)
|
||||
class MtlxMaterial : public MtlxElement {
|
||||
public:
|
||||
MtlxMaterial() = default;
|
||||
|
||||
// Shader references
|
||||
const std::string& GetSurfaceShader() const { return surface_shader_; }
|
||||
void SetSurfaceShader(const std::string& shader) { surface_shader_ = shader; }
|
||||
|
||||
const std::string& GetDisplacementShader() const { return displacement_shader_; }
|
||||
void SetDisplacementShader(const std::string& shader) { displacement_shader_ = shader; }
|
||||
|
||||
const std::string& GetVolumeShader() const { return volume_shader_; }
|
||||
void SetVolumeShader(const std::string& shader) { volume_shader_ = shader; }
|
||||
|
||||
bool ParseFromXML(XMLNodePtr xml_node) override;
|
||||
std::string GetElementType() const override { return "material"; }
|
||||
|
||||
private:
|
||||
std::string surface_shader_;
|
||||
std::string displacement_shader_;
|
||||
std::string volume_shader_;
|
||||
};
|
||||
|
||||
// MaterialX Document
|
||||
class MtlxDocument {
|
||||
public:
|
||||
MtlxDocument() = default;
|
||||
|
||||
// Parse from XML
|
||||
bool ParseFromXML(const std::string& xml_string);
|
||||
bool ParseFromFile(const std::string& filename);
|
||||
|
||||
// Document properties
|
||||
const std::string& GetVersion() const { return version_; }
|
||||
const std::string& GetColorSpace() const { return colorspace_; }
|
||||
const std::string& GetNamespace() const { return namespace_; }
|
||||
|
||||
// Access elements
|
||||
const std::vector<MtlxNodePtr>& GetNodes() const { return nodes_; }
|
||||
const std::vector<MtlxNodeGraphPtr>& GetNodeGraphs() const { return nodegraphs_; }
|
||||
const std::vector<MtlxMaterialPtr>& GetMaterials() const { return materials_; }
|
||||
|
||||
// Find elements by name
|
||||
MtlxNodePtr FindNode(const std::string& name) const;
|
||||
MtlxNodeGraphPtr FindNodeGraph(const std::string& name) const;
|
||||
MtlxMaterialPtr FindMaterial(const std::string& name) const;
|
||||
|
||||
// Get errors
|
||||
const std::string& GetError() const { return error_; }
|
||||
const std::string& GetWarning() const { return warning_; }
|
||||
|
||||
private:
|
||||
bool ParseElement(XMLNodePtr xml_node);
|
||||
MtlxValue ParseValue(const std::string& type, const std::string& value);
|
||||
|
||||
std::string version_;
|
||||
std::string colorspace_;
|
||||
std::string namespace_;
|
||||
|
||||
std::vector<MtlxNodePtr> nodes_;
|
||||
std::vector<MtlxNodeGraphPtr> nodegraphs_;
|
||||
std::vector<MtlxMaterialPtr> materials_;
|
||||
|
||||
std::string error_;
|
||||
std::string warning_;
|
||||
};
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
57
sandbox/mtlx-parser/include/mtlx-simple-parser.hh
Normal file
57
sandbox/mtlx-parser/include/mtlx-simple-parser.hh
Normal file
@@ -0,0 +1,57 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// Simple, robust MaterialX XML parser
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "mtlx-xml-tokenizer.hh"
|
||||
#include <memory>
|
||||
#include <map>
|
||||
#include <stack>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
// Forward declaration
|
||||
class SimpleXMLNode;
|
||||
using SimpleXMLNodePtr = std::shared_ptr<SimpleXMLNode>;
|
||||
|
||||
// Simple XML node
|
||||
class SimpleXMLNode {
|
||||
public:
|
||||
std::string name;
|
||||
std::string text;
|
||||
std::map<std::string, std::string> attributes;
|
||||
std::vector<SimpleXMLNodePtr> children;
|
||||
|
||||
SimpleXMLNode() = default;
|
||||
explicit SimpleXMLNode(const std::string& n) : name(n) {}
|
||||
|
||||
SimpleXMLNodePtr GetChild(const std::string& n) const {
|
||||
for (const auto& child : children) {
|
||||
if (child && child->name == n) {
|
||||
return child;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
std::string GetAttribute(const std::string& n, const std::string& def = "") const {
|
||||
auto it = attributes.find(n);
|
||||
return (it != attributes.end()) ? it->second : def;
|
||||
}
|
||||
};
|
||||
|
||||
// Simple XML parser
|
||||
class SimpleXMLParser {
|
||||
public:
|
||||
bool Parse(const std::string& xml);
|
||||
SimpleXMLNodePtr GetRoot() const { return root_; }
|
||||
const std::string& GetError() const { return error_; }
|
||||
|
||||
private:
|
||||
SimpleXMLNodePtr root_;
|
||||
std::string error_;
|
||||
};
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
163
sandbox/mtlx-parser/include/mtlx-usd-adapter.hh
Normal file
163
sandbox/mtlx-parser/include/mtlx-usd-adapter.hh
Normal file
@@ -0,0 +1,163 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// MaterialX to USD adapter - replaces pugixml with our secure parser
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "mtlx-simple-parser.hh"
|
||||
#include <string>
|
||||
#include <functional>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
// Adapter to replace pugixml with our parser
|
||||
// This provides a pugixml-like interface for easy migration
|
||||
|
||||
class XMLAttribute {
|
||||
public:
|
||||
XMLAttribute() : valid_(false) {}
|
||||
XMLAttribute(const std::string& value) : value_(value), valid_(true) {}
|
||||
|
||||
operator bool() const { return valid_; }
|
||||
const char* as_string() const { return value_.c_str(); }
|
||||
|
||||
private:
|
||||
std::string value_;
|
||||
bool valid_;
|
||||
};
|
||||
|
||||
class XMLNode {
|
||||
public:
|
||||
XMLNode() : node_(nullptr) {}
|
||||
explicit XMLNode(SimpleXMLNodePtr n) : node_(n) {}
|
||||
|
||||
operator bool() const { return node_ != nullptr; }
|
||||
|
||||
XMLAttribute attribute(const char* name) const {
|
||||
if (!node_) return XMLAttribute();
|
||||
|
||||
auto it = node_->attributes.find(name);
|
||||
if (it != node_->attributes.end()) {
|
||||
return XMLAttribute(it->second);
|
||||
}
|
||||
return XMLAttribute();
|
||||
}
|
||||
|
||||
XMLNode child(const char* name) const {
|
||||
if (!node_) return XMLNode();
|
||||
|
||||
for (const auto& c : node_->children) {
|
||||
if (c && c->name == name) {
|
||||
return XMLNode(c);
|
||||
}
|
||||
}
|
||||
return XMLNode();
|
||||
}
|
||||
|
||||
const char* name() const {
|
||||
return node_ ? node_->name.c_str() : "";
|
||||
}
|
||||
|
||||
const char* child_value() const {
|
||||
return node_ ? node_->text.c_str() : "";
|
||||
}
|
||||
|
||||
// Iterator support
|
||||
class iterator {
|
||||
public:
|
||||
iterator(const std::vector<SimpleXMLNodePtr>& children, size_t pos = 0)
|
||||
: children_(children), pos_(pos) {}
|
||||
|
||||
iterator& operator++() {
|
||||
++pos_;
|
||||
return *this;
|
||||
}
|
||||
|
||||
bool operator!=(const iterator& other) const {
|
||||
return pos_ != other.pos_;
|
||||
}
|
||||
|
||||
XMLNode operator*() const {
|
||||
if (pos_ < children_.size()) {
|
||||
return XMLNode(children_[pos_]);
|
||||
}
|
||||
return XMLNode();
|
||||
}
|
||||
|
||||
private:
|
||||
const std::vector<SimpleXMLNodePtr>& children_;
|
||||
size_t pos_;
|
||||
};
|
||||
|
||||
iterator begin() const {
|
||||
return node_ ? iterator(node_->children) : iterator({});
|
||||
}
|
||||
|
||||
iterator end() const {
|
||||
return node_ ? iterator(node_->children, node_->children.size()) : iterator({});
|
||||
}
|
||||
|
||||
// Get children with specific name
|
||||
std::vector<XMLNode> children(const char* name) const {
|
||||
std::vector<XMLNode> result;
|
||||
if (node_) {
|
||||
for (const auto& c : node_->children) {
|
||||
if (c && c->name == name) {
|
||||
result.push_back(XMLNode(c));
|
||||
}
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
private:
|
||||
SimpleXMLNodePtr node_;
|
||||
};
|
||||
|
||||
class XMLDocument {
|
||||
public:
|
||||
struct ParseResult {
|
||||
bool success;
|
||||
const char* description() const { return error_.c_str(); }
|
||||
operator bool() const { return success; }
|
||||
std::string error_;
|
||||
};
|
||||
|
||||
ParseResult load_string(const char* xml) {
|
||||
ParseResult result;
|
||||
SimpleXMLParser parser;
|
||||
|
||||
if (parser.Parse(xml)) {
|
||||
root_ = XMLNode(parser.GetRoot());
|
||||
result.success = true;
|
||||
} else {
|
||||
result.success = false;
|
||||
result.error_ = parser.GetError();
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
XMLNode child(const char* name) const {
|
||||
if (root_) {
|
||||
if (std::string(root_.name()) == name) {
|
||||
return root_;
|
||||
}
|
||||
return root_.child(name);
|
||||
}
|
||||
return XMLNode();
|
||||
}
|
||||
|
||||
private:
|
||||
XMLNode root_;
|
||||
};
|
||||
|
||||
// Namespace aliases to match pugixml
|
||||
namespace pugi = mtlx;
|
||||
using xml_document = XMLDocument;
|
||||
using xml_node = XMLNode;
|
||||
using xml_attribute = XMLAttribute;
|
||||
using xml_parse_result = XMLDocument::ParseResult;
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
140
sandbox/mtlx-parser/include/mtlx-xml-parser.hh
Normal file
140
sandbox/mtlx-parser/include/mtlx-xml-parser.hh
Normal file
@@ -0,0 +1,140 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// MaterialX XML Parser - DOM-style parser for MaterialX documents
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "mtlx-xml-tokenizer.hh"
|
||||
#include <memory>
|
||||
#include <map>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
class XMLNode;
|
||||
using XMLNodePtr = std::shared_ptr<XMLNode>;
|
||||
|
||||
// XML Attribute
|
||||
struct XMLAttribute {
|
||||
std::string name;
|
||||
std::string value;
|
||||
};
|
||||
|
||||
// XML Node representing an element in the DOM
|
||||
class XMLNode {
|
||||
public:
|
||||
XMLNode() = default;
|
||||
explicit XMLNode(const std::string& name) : name_(name) {}
|
||||
|
||||
// Node properties
|
||||
const std::string& GetName() const { return name_; }
|
||||
void SetName(const std::string& name) { name_ = name; }
|
||||
|
||||
const std::string& GetText() const { return text_; }
|
||||
void SetText(const std::string& text) { text_ = text; }
|
||||
|
||||
// Attributes
|
||||
bool HasAttribute(const std::string& name) const;
|
||||
std::string GetAttribute(const std::string& name, const std::string& default_value = "") const;
|
||||
bool GetAttributeInt(const std::string& name, int& value) const;
|
||||
bool GetAttributeFloat(const std::string& name, float& value) const;
|
||||
bool GetAttributeBool(const std::string& name, bool& value) const;
|
||||
void SetAttribute(const std::string& name, const std::string& value);
|
||||
const std::map<std::string, std::string>& GetAttributes() const { return attributes_; }
|
||||
|
||||
// Children
|
||||
void AddChild(XMLNodePtr child);
|
||||
const std::vector<XMLNodePtr>& GetChildren() const { return children_; }
|
||||
std::vector<XMLNodePtr> GetChildren(const std::string& name) const;
|
||||
XMLNodePtr GetChild(const std::string& name) const;
|
||||
XMLNodePtr GetFirstChild() const;
|
||||
|
||||
// Parent
|
||||
XMLNode* GetParent() const { return parent_; }
|
||||
void SetParent(XMLNode* parent) { parent_ = parent; }
|
||||
|
||||
// Utilities
|
||||
bool IsEmpty() const { return children_.empty() && text_.empty(); }
|
||||
size_t GetChildCount() const { return children_.size(); }
|
||||
|
||||
// Path-based access (e.g., "nodegraph/input")
|
||||
XMLNodePtr FindNode(const std::string& path) const;
|
||||
std::vector<XMLNodePtr> FindNodes(const std::string& path) const;
|
||||
|
||||
private:
|
||||
std::string name_;
|
||||
std::string text_;
|
||||
std::map<std::string, std::string> attributes_;
|
||||
std::vector<XMLNodePtr> children_;
|
||||
XMLNode* parent_ = nullptr;
|
||||
};
|
||||
|
||||
// XML Document
|
||||
class XMLDocument {
|
||||
public:
|
||||
XMLDocument() = default;
|
||||
~XMLDocument() = default;
|
||||
|
||||
// Parse XML from string
|
||||
bool ParseString(const std::string& xml_string);
|
||||
bool ParseMemory(const char* data, size_t size);
|
||||
|
||||
// Get root node
|
||||
XMLNodePtr GetRoot() const { return root_; }
|
||||
|
||||
// Get parse error if any
|
||||
const std::string& GetError() const { return error_; }
|
||||
|
||||
// Utility methods
|
||||
XMLNodePtr FindNode(const std::string& path) const;
|
||||
std::vector<XMLNodePtr> FindNodes(const std::string& path) const;
|
||||
|
||||
private:
|
||||
bool ParseNode(XMLTokenizer& tokenizer, XMLNodePtr parent);
|
||||
bool ParseAttributes(XMLTokenizer& tokenizer, XMLNodePtr node);
|
||||
|
||||
XMLNodePtr root_;
|
||||
std::string error_;
|
||||
|
||||
// Security limits
|
||||
static constexpr size_t MAX_DEPTH = 1000;
|
||||
size_t current_depth_ = 0;
|
||||
};
|
||||
|
||||
// MaterialX-specific parser built on top of XMLDocument
|
||||
class MaterialXParser {
|
||||
public:
|
||||
MaterialXParser() = default;
|
||||
~MaterialXParser() = default;
|
||||
|
||||
// Parse MaterialX document
|
||||
bool Parse(const std::string& xml_string);
|
||||
bool ParseFile(const std::string& filename);
|
||||
|
||||
// Get parsed document
|
||||
XMLDocument& GetDocument() { return document_; }
|
||||
const XMLDocument& GetDocument() const { return document_; }
|
||||
|
||||
// MaterialX-specific validation
|
||||
bool Validate();
|
||||
|
||||
// Get errors/warnings
|
||||
const std::string& GetError() const { return error_; }
|
||||
const std::string& GetWarning() const { return warning_; }
|
||||
|
||||
// MaterialX version info
|
||||
std::string GetVersion() const;
|
||||
std::string GetColorSpace() const;
|
||||
std::string GetNamespace() const;
|
||||
|
||||
private:
|
||||
XMLDocument document_;
|
||||
std::string error_;
|
||||
std::string warning_;
|
||||
|
||||
bool ValidateVersion(const std::string& version);
|
||||
bool ValidateNode(XMLNodePtr node);
|
||||
bool ValidateType(const std::string& type_name);
|
||||
};
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
108
sandbox/mtlx-parser/include/mtlx-xml-tokenizer.hh
Normal file
108
sandbox/mtlx-parser/include/mtlx-xml-tokenizer.hh
Normal file
@@ -0,0 +1,108 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// MaterialX XML Tokenizer - Simple, secure, dependency-free XML tokenizer
|
||||
// Designed specifically for MaterialX parsing with security in mind
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include <cstdint>
|
||||
#include <cstring>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
enum class TokenType {
|
||||
StartTag, // <element
|
||||
EndTag, // </element>
|
||||
SelfClosingTag, // />
|
||||
Attribute, // name="value"
|
||||
Text, // Text content between tags
|
||||
Comment, // <!-- comment -->
|
||||
ProcessingInstruction, // <?xml ... ?>
|
||||
CDATA, // <![CDATA[ ... ]]>
|
||||
EndOfDocument,
|
||||
Error
|
||||
};
|
||||
|
||||
struct Token {
|
||||
TokenType type;
|
||||
std::string name; // Tag/attribute name
|
||||
std::string value; // Attribute value or text content
|
||||
size_t line;
|
||||
size_t column;
|
||||
};
|
||||
|
||||
class XMLTokenizer {
|
||||
public:
|
||||
XMLTokenizer() = default;
|
||||
~XMLTokenizer() = default;
|
||||
|
||||
// Initialize tokenizer with input data
|
||||
// Returns false if data is nullptr or size exceeds max_size
|
||||
bool Initialize(const char* data, size_t size, size_t max_size = 1024 * 1024 * 100);
|
||||
|
||||
// Get next token
|
||||
bool NextToken(Token& token);
|
||||
|
||||
// Peek at next token without consuming it
|
||||
bool PeekToken(Token& token);
|
||||
|
||||
// Get current position in document
|
||||
void GetPosition(size_t& line, size_t& column) const {
|
||||
line = current_line_;
|
||||
column = current_column_;
|
||||
}
|
||||
|
||||
// Get error message if last operation failed
|
||||
const std::string& GetError() const { return error_; }
|
||||
|
||||
private:
|
||||
// Internal parsing methods
|
||||
bool SkipWhitespace();
|
||||
bool ParseStartTag(Token& token);
|
||||
bool ParseEndTag(Token& token);
|
||||
bool ParseAttribute(Token& token);
|
||||
bool ParseText(Token& token);
|
||||
bool ParseComment(Token& token);
|
||||
bool ParseCDATA(Token& token);
|
||||
bool ParseProcessingInstruction(Token& token);
|
||||
|
||||
// Helper methods for safe string parsing
|
||||
bool ParseName(std::string& name);
|
||||
bool ParseQuotedString(std::string& str, char quote);
|
||||
bool ParseUntil(std::string& str, const char* delimiter);
|
||||
|
||||
// Safe character access with bounds checking
|
||||
char PeekChar(size_t offset = 0) const;
|
||||
char NextChar();
|
||||
bool Match(const char* str);
|
||||
bool Consume(const char* str);
|
||||
|
||||
// Update line/column position
|
||||
void UpdatePosition(char c);
|
||||
|
||||
// Input data
|
||||
const char* data_ = nullptr;
|
||||
size_t size_ = 0;
|
||||
size_t position_ = 0;
|
||||
|
||||
// Current position tracking
|
||||
size_t current_line_ = 1;
|
||||
size_t current_column_ = 1;
|
||||
|
||||
// Error state
|
||||
std::string error_;
|
||||
|
||||
// Parsing state
|
||||
bool in_tag_ = false;
|
||||
std::string current_tag_name_;
|
||||
|
||||
// Security limits
|
||||
static constexpr size_t MAX_NAME_LENGTH = 256;
|
||||
static constexpr size_t MAX_STRING_LENGTH = 64 * 1024;
|
||||
static constexpr size_t MAX_TEXT_LENGTH = 1024 * 1024;
|
||||
};
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
390
sandbox/mtlx-parser/src/mtlx-dom.cc
Normal file
390
sandbox/mtlx-parser/src/mtlx-dom.cc
Normal file
@@ -0,0 +1,390 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
|
||||
#include "../include/mtlx-dom.hh"
|
||||
#include <fstream>
|
||||
#include <sstream>
|
||||
#include <algorithm>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
// Helper function to parse vector values
|
||||
static std::vector<float> ParseFloatVector(const std::string& str) {
|
||||
std::vector<float> result;
|
||||
std::stringstream ss(str);
|
||||
std::string token;
|
||||
|
||||
while (std::getline(ss, token, ',')) {
|
||||
// Trim whitespace
|
||||
token.erase(0, token.find_first_not_of(" \t"));
|
||||
token.erase(token.find_last_not_of(" \t") + 1);
|
||||
|
||||
if (!token.empty()) {
|
||||
char* endptr;
|
||||
float val = std::strtof(token.c_str(), &endptr);
|
||||
if (*endptr == '\0') {
|
||||
result.push_back(val);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static std::vector<int> ParseIntVector(const std::string& str) {
|
||||
std::vector<int> result;
|
||||
std::stringstream ss(str);
|
||||
std::string token;
|
||||
|
||||
while (std::getline(ss, token, ',')) {
|
||||
// Trim whitespace
|
||||
token.erase(0, token.find_first_not_of(" \t"));
|
||||
token.erase(token.find_last_not_of(" \t") + 1);
|
||||
|
||||
if (!token.empty()) {
|
||||
char* endptr;
|
||||
long val = std::strtol(token.c_str(), &endptr, 10);
|
||||
if (*endptr == '\0') {
|
||||
result.push_back(static_cast<int>(val));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// MtlxElement implementation
|
||||
|
||||
bool MtlxElement::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!xml_node) return false;
|
||||
|
||||
name_ = xml_node->GetAttribute("name");
|
||||
type_ = xml_node->GetAttribute("type");
|
||||
nodedef_ = xml_node->GetAttribute("nodedef");
|
||||
|
||||
// Store all other attributes
|
||||
for (const auto& attr : xml_node->GetAttributes()) {
|
||||
if (attr.first != "name" && attr.first != "type" && attr.first != "nodedef") {
|
||||
extra_attributes_[attr.first] = attr.second;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// MtlxInput implementation
|
||||
|
||||
bool MtlxInput::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!MtlxElement::ParseFromXML(xml_node)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
nodename_ = xml_node->GetAttribute("nodename");
|
||||
output_ = xml_node->GetAttribute("output");
|
||||
interfacename_ = xml_node->GetAttribute("interfacename");
|
||||
channels_ = xml_node->GetAttribute("channels");
|
||||
|
||||
// Parse value attribute
|
||||
std::string value_str = xml_node->GetAttribute("value");
|
||||
if (!value_str.empty() && !type_.empty()) {
|
||||
// Parse based on type
|
||||
if (type_ == "float") {
|
||||
char* endptr;
|
||||
float val = std::strtof(value_str.c_str(), &endptr);
|
||||
if (*endptr == '\0') {
|
||||
value_ = MtlxValue(val);
|
||||
}
|
||||
} else if (type_ == "integer") {
|
||||
char* endptr;
|
||||
long val = std::strtol(value_str.c_str(), &endptr, 10);
|
||||
if (*endptr == '\0') {
|
||||
value_ = MtlxValue(static_cast<int>(val));
|
||||
}
|
||||
} else if (type_ == "boolean") {
|
||||
value_ = MtlxValue(value_str == "true" || value_str == "1");
|
||||
} else if (type_ == "string" || type_ == "filename") {
|
||||
value_ = MtlxValue(value_str);
|
||||
} else if (type_ == "color3" || type_ == "vector3") {
|
||||
value_ = MtlxValue(ParseFloatVector(value_str));
|
||||
} else if (type_ == "color4" || type_ == "vector4") {
|
||||
value_ = MtlxValue(ParseFloatVector(value_str));
|
||||
} else if (type_ == "vector2") {
|
||||
value_ = MtlxValue(ParseFloatVector(value_str));
|
||||
} else if (type_ == "integerarray") {
|
||||
value_ = MtlxValue(ParseIntVector(value_str));
|
||||
} else if (type_ == "floatarray") {
|
||||
value_ = MtlxValue(ParseFloatVector(value_str));
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// MtlxOutput implementation
|
||||
|
||||
bool MtlxOutput::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!MtlxElement::ParseFromXML(xml_node)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
nodename_ = xml_node->GetAttribute("nodename");
|
||||
output_ = xml_node->GetAttribute("output");
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// MtlxNode implementation
|
||||
|
||||
bool MtlxNode::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!MtlxElement::ParseFromXML(xml_node)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
category_ = xml_node->GetAttribute("category");
|
||||
if (category_.empty()) {
|
||||
// If no category, use the node name as category (for typed nodes)
|
||||
category_ = xml_node->GetName();
|
||||
}
|
||||
|
||||
// Parse input children
|
||||
for (const auto& child : xml_node->GetChildren()) {
|
||||
if (child->GetName() == "input") {
|
||||
auto input = std::make_shared<MtlxInput>();
|
||||
if (input->ParseFromXML(child)) {
|
||||
inputs_.push_back(input);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
MtlxInputPtr MtlxNode::GetInput(const std::string& name) const {
|
||||
for (const auto& input : inputs_) {
|
||||
if (input && input->GetName() == name) {
|
||||
return input;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// MtlxNodeGraph implementation
|
||||
|
||||
bool MtlxNodeGraph::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!MtlxElement::ParseFromXML(xml_node)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse children
|
||||
for (const auto& child : xml_node->GetChildren()) {
|
||||
const std::string& child_name = child->GetName();
|
||||
|
||||
if (child_name == "node" ||
|
||||
// Typed nodes (e.g., <image>, <tiledimage>, etc.)
|
||||
child_name == "image" || child_name == "tiledimage" ||
|
||||
child_name == "place2d" || child_name == "constant" ||
|
||||
child_name == "multiply" || child_name == "add" ||
|
||||
child_name == "subtract" || child_name == "divide") {
|
||||
|
||||
auto node = std::make_shared<MtlxNode>();
|
||||
if (node->ParseFromXML(child)) {
|
||||
nodes_.push_back(node);
|
||||
}
|
||||
} else if (child_name == "input") {
|
||||
auto input = std::make_shared<MtlxInput>();
|
||||
if (input->ParseFromXML(child)) {
|
||||
inputs_.push_back(input);
|
||||
}
|
||||
} else if (child_name == "output") {
|
||||
auto output = std::make_shared<MtlxOutput>();
|
||||
if (output->ParseFromXML(child)) {
|
||||
outputs_.push_back(output);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
MtlxNodePtr MtlxNodeGraph::GetNode(const std::string& name) const {
|
||||
for (const auto& node : nodes_) {
|
||||
if (node && node->GetName() == name) {
|
||||
return node;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// MtlxMaterial implementation
|
||||
|
||||
bool MtlxMaterial::ParseFromXML(XMLNodePtr xml_node) {
|
||||
if (!MtlxElement::ParseFromXML(xml_node)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse shader references
|
||||
for (const auto& child : xml_node->GetChildren()) {
|
||||
if (child->GetName() == "shaderref") {
|
||||
std::string shader_name = child->GetAttribute("name");
|
||||
std::string shader_node = child->GetAttribute("node");
|
||||
|
||||
if (shader_name == "surfaceshader" || shader_name == "sr") {
|
||||
surface_shader_ = shader_node;
|
||||
} else if (shader_name == "displacementshader" || shader_name == "dr") {
|
||||
displacement_shader_ = shader_node;
|
||||
} else if (shader_name == "volumeshader" || shader_name == "vr") {
|
||||
volume_shader_ = shader_node;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// MtlxDocument implementation
|
||||
|
||||
bool MtlxDocument::ParseFromXML(const std::string& xml_string) {
|
||||
MaterialXParser parser;
|
||||
|
||||
if (!parser.Parse(xml_string)) {
|
||||
error_ = parser.GetError();
|
||||
return false;
|
||||
}
|
||||
|
||||
warning_ = parser.GetWarning();
|
||||
|
||||
auto root = parser.GetDocument().GetRoot();
|
||||
if (!root || root->GetName() != "materialx") {
|
||||
error_ = "Invalid MaterialX document";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse document attributes
|
||||
version_ = root->GetAttribute("version");
|
||||
colorspace_ = root->GetAttribute("colorspace");
|
||||
namespace_ = root->GetAttribute("namespace");
|
||||
|
||||
// Parse all children
|
||||
for (const auto& child : root->GetChildren()) {
|
||||
if (!ParseElement(child)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool MtlxDocument::ParseFromFile(const std::string& filename) {
|
||||
std::ifstream file(filename, std::ios::binary);
|
||||
if (!file) {
|
||||
error_ = "Failed to open file: " + filename;
|
||||
return false;
|
||||
}
|
||||
|
||||
std::stringstream buffer;
|
||||
buffer << file.rdbuf();
|
||||
|
||||
return ParseFromXML(buffer.str());
|
||||
}
|
||||
|
||||
bool MtlxDocument::ParseElement(XMLNodePtr xml_node) {
|
||||
if (!xml_node) return false;
|
||||
|
||||
const std::string& element_name = xml_node->GetName();
|
||||
|
||||
if (element_name == "node" ||
|
||||
// Typed nodes
|
||||
element_name == "standard_surface" ||
|
||||
element_name == "UsdPreviewSurface" ||
|
||||
element_name == "image" || element_name == "tiledimage" ||
|
||||
element_name == "place2d" || element_name == "constant") {
|
||||
|
||||
auto node = std::make_shared<MtlxNode>();
|
||||
if (node->ParseFromXML(xml_node)) {
|
||||
nodes_.push_back(node);
|
||||
}
|
||||
} else if (element_name == "nodegraph") {
|
||||
auto nodegraph = std::make_shared<MtlxNodeGraph>();
|
||||
if (nodegraph->ParseFromXML(xml_node)) {
|
||||
nodegraphs_.push_back(nodegraph);
|
||||
}
|
||||
} else if (element_name == "surfacematerial" || element_name == "volumematerial") {
|
||||
auto material = std::make_shared<MtlxMaterial>();
|
||||
if (material->ParseFromXML(xml_node)) {
|
||||
materials_.push_back(material);
|
||||
}
|
||||
}
|
||||
|
||||
// Recursively parse any nested nodegraphs or other elements
|
||||
for (const auto& child : xml_node->GetChildren()) {
|
||||
ParseElement(child);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
MtlxValue MtlxDocument::ParseValue(const std::string& type, const std::string& value_str) {
|
||||
if (type == "float") {
|
||||
char* endptr;
|
||||
float val = std::strtof(value_str.c_str(), &endptr);
|
||||
if (*endptr == '\0') {
|
||||
return MtlxValue(val);
|
||||
}
|
||||
} else if (type == "integer") {
|
||||
char* endptr;
|
||||
long val = std::strtol(value_str.c_str(), &endptr, 10);
|
||||
if (*endptr == '\0') {
|
||||
return MtlxValue(static_cast<int>(val));
|
||||
}
|
||||
} else if (type == "boolean") {
|
||||
return MtlxValue(value_str == "true" || value_str == "1");
|
||||
} else if (type == "string" || type == "filename") {
|
||||
return MtlxValue(value_str);
|
||||
} else if (type == "color3" || type == "vector3" || type == "color4" ||
|
||||
type == "vector4" || type == "vector2" || type == "floatarray") {
|
||||
return MtlxValue(ParseFloatVector(value_str));
|
||||
} else if (type == "integerarray") {
|
||||
return MtlxValue(ParseIntVector(value_str));
|
||||
}
|
||||
|
||||
// Default to string
|
||||
return MtlxValue(value_str);
|
||||
}
|
||||
|
||||
MtlxNodePtr MtlxDocument::FindNode(const std::string& name) const {
|
||||
for (const auto& node : nodes_) {
|
||||
if (node && node->GetName() == name) {
|
||||
return node;
|
||||
}
|
||||
}
|
||||
|
||||
// Also search within nodegraphs
|
||||
for (const auto& nodegraph : nodegraphs_) {
|
||||
if (auto node = nodegraph->GetNode(name)) {
|
||||
return node;
|
||||
}
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
MtlxNodeGraphPtr MtlxDocument::FindNodeGraph(const std::string& name) const {
|
||||
for (const auto& nodegraph : nodegraphs_) {
|
||||
if (nodegraph && nodegraph->GetName() == name) {
|
||||
return nodegraph;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
MtlxMaterialPtr MtlxDocument::FindMaterial(const std::string& name) const {
|
||||
for (const auto& material : materials_) {
|
||||
if (material && material->GetName() == name) {
|
||||
return material;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
119
sandbox/mtlx-parser/src/mtlx-simple-parser.cc
Normal file
119
sandbox/mtlx-parser/src/mtlx-simple-parser.cc
Normal file
@@ -0,0 +1,119 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
|
||||
#include "../include/mtlx-simple-parser.hh"
|
||||
#include <cstring>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
bool SimpleXMLParser::Parse(const std::string& xml) {
|
||||
XMLTokenizer tokenizer;
|
||||
|
||||
if (!tokenizer.Initialize(xml.c_str(), xml.size())) {
|
||||
error_ = "Failed to initialize tokenizer: " + tokenizer.GetError();
|
||||
return false;
|
||||
}
|
||||
|
||||
std::stack<SimpleXMLNodePtr> node_stack;
|
||||
SimpleXMLNodePtr current_node;
|
||||
Token token;
|
||||
|
||||
while (tokenizer.NextToken(token)) {
|
||||
switch (token.type) {
|
||||
case TokenType::ProcessingInstruction:
|
||||
// Skip XML declaration
|
||||
continue;
|
||||
|
||||
case TokenType::StartTag: {
|
||||
auto new_node = std::make_shared<SimpleXMLNode>(token.name);
|
||||
|
||||
// Collect attributes
|
||||
Token attr_token;
|
||||
while (tokenizer.NextToken(attr_token)) {
|
||||
if (attr_token.type == TokenType::Attribute) {
|
||||
new_node->attributes[attr_token.name] = attr_token.value;
|
||||
} else if (attr_token.type == TokenType::SelfClosingTag) {
|
||||
// Self-closing tag, add to parent and continue
|
||||
if (!node_stack.empty()) {
|
||||
node_stack.top()->children.push_back(new_node);
|
||||
} else if (!root_) {
|
||||
root_ = new_node;
|
||||
}
|
||||
break;
|
||||
} else {
|
||||
// End of attributes, rewind this token
|
||||
// Since we can't rewind, we'll handle it in the next iteration
|
||||
// by checking if we have a pending token
|
||||
|
||||
// For now, assume end of attributes
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// If not self-closing, push to stack
|
||||
if (attr_token.type != TokenType::SelfClosingTag) {
|
||||
if (!node_stack.empty()) {
|
||||
node_stack.top()->children.push_back(new_node);
|
||||
} else if (!root_) {
|
||||
root_ = new_node;
|
||||
}
|
||||
node_stack.push(new_node);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case TokenType::EndTag: {
|
||||
if (node_stack.empty()) {
|
||||
error_ = "Unexpected end tag: " + token.name;
|
||||
return false;
|
||||
}
|
||||
|
||||
if (node_stack.top()->name != token.name) {
|
||||
error_ = "Mismatched end tag: expected </" + node_stack.top()->name +
|
||||
"> but got </" + token.name + ">";
|
||||
return false;
|
||||
}
|
||||
|
||||
node_stack.pop();
|
||||
break;
|
||||
}
|
||||
|
||||
case TokenType::Text:
|
||||
case TokenType::CDATA: {
|
||||
if (!node_stack.empty()) {
|
||||
// Append text to current node
|
||||
node_stack.top()->text += token.value;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case TokenType::Comment:
|
||||
// Ignore comments
|
||||
break;
|
||||
|
||||
case TokenType::EndOfDocument:
|
||||
if (!node_stack.empty()) {
|
||||
error_ = "Unclosed tags at end of document";
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
|
||||
case TokenType::Error:
|
||||
error_ = "Tokenizer error: " + tokenizer.GetError();
|
||||
return false;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!node_stack.empty()) {
|
||||
error_ = "Unclosed tags at end of document";
|
||||
return false;
|
||||
}
|
||||
|
||||
return root_ != nullptr;
|
||||
}
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
504
sandbox/mtlx-parser/src/mtlx-xml-parser.cc
Normal file
504
sandbox/mtlx-parser/src/mtlx-xml-parser.cc
Normal file
@@ -0,0 +1,504 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
|
||||
#include "../include/mtlx-xml-parser.hh"
|
||||
#include <fstream>
|
||||
#include <sstream>
|
||||
#include <algorithm>
|
||||
#include <cstdlib>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
// XMLNode implementation
|
||||
|
||||
bool XMLNode::HasAttribute(const std::string& name) const {
|
||||
return attributes_.find(name) != attributes_.end();
|
||||
}
|
||||
|
||||
std::string XMLNode::GetAttribute(const std::string& name, const std::string& default_value) const {
|
||||
auto it = attributes_.find(name);
|
||||
if (it != attributes_.end()) {
|
||||
return it->second;
|
||||
}
|
||||
return default_value;
|
||||
}
|
||||
|
||||
bool XMLNode::GetAttributeInt(const std::string& name, int& value) const {
|
||||
auto it = attributes_.find(name);
|
||||
if (it != attributes_.end()) {
|
||||
char* endptr;
|
||||
long val = std::strtol(it->second.c_str(), &endptr, 10);
|
||||
if (*endptr == '\0') {
|
||||
value = static_cast<int>(val);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool XMLNode::GetAttributeFloat(const std::string& name, float& value) const {
|
||||
auto it = attributes_.find(name);
|
||||
if (it != attributes_.end()) {
|
||||
char* endptr;
|
||||
float val = std::strtof(it->second.c_str(), &endptr);
|
||||
if (*endptr == '\0') {
|
||||
value = val;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool XMLNode::GetAttributeBool(const std::string& name, bool& value) const {
|
||||
auto it = attributes_.find(name);
|
||||
if (it != attributes_.end()) {
|
||||
const std::string& str = it->second;
|
||||
if (str == "true" || str == "1" || str == "yes") {
|
||||
value = true;
|
||||
return true;
|
||||
} else if (str == "false" || str == "0" || str == "no") {
|
||||
value = false;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
void XMLNode::SetAttribute(const std::string& name, const std::string& value) {
|
||||
attributes_[name] = value;
|
||||
}
|
||||
|
||||
void XMLNode::AddChild(XMLNodePtr child) {
|
||||
if (child) {
|
||||
child->SetParent(this);
|
||||
children_.push_back(child);
|
||||
}
|
||||
}
|
||||
|
||||
std::vector<XMLNodePtr> XMLNode::GetChildren(const std::string& name) const {
|
||||
std::vector<XMLNodePtr> result;
|
||||
for (const auto& child : children_) {
|
||||
if (child && child->GetName() == name) {
|
||||
result.push_back(child);
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
XMLNodePtr XMLNode::GetChild(const std::string& name) const {
|
||||
for (const auto& child : children_) {
|
||||
if (child && child->GetName() == name) {
|
||||
return child;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
XMLNodePtr XMLNode::GetFirstChild() const {
|
||||
if (!children_.empty()) {
|
||||
return children_.front();
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
XMLNodePtr XMLNode::FindNode(const std::string& path) const {
|
||||
if (path.empty()) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// Split path by '/'
|
||||
size_t pos = path.find('/');
|
||||
std::string first = (pos == std::string::npos) ? path : path.substr(0, pos);
|
||||
std::string rest = (pos == std::string::npos) ? "" : path.substr(pos + 1);
|
||||
|
||||
// Find child with matching name
|
||||
for (const auto& child : children_) {
|
||||
if (child && child->GetName() == first) {
|
||||
if (rest.empty()) {
|
||||
return child;
|
||||
} else {
|
||||
return child->FindNode(rest);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
std::vector<XMLNodePtr> XMLNode::FindNodes(const std::string& path) const {
|
||||
std::vector<XMLNodePtr> result;
|
||||
|
||||
if (path.empty()) {
|
||||
return result;
|
||||
}
|
||||
|
||||
// Split path by '/'
|
||||
size_t pos = path.find('/');
|
||||
std::string first = (pos == std::string::npos) ? path : path.substr(0, pos);
|
||||
std::string rest = (pos == std::string::npos) ? "" : path.substr(pos + 1);
|
||||
|
||||
// Find all children with matching name
|
||||
for (const auto& child : children_) {
|
||||
if (child && child->GetName() == first) {
|
||||
if (rest.empty()) {
|
||||
result.push_back(child);
|
||||
} else {
|
||||
auto sub_results = child->FindNodes(rest);
|
||||
result.insert(result.end(), sub_results.begin(), sub_results.end());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// XMLDocument implementation
|
||||
|
||||
bool XMLDocument::ParseString(const std::string& xml_string) {
|
||||
return ParseMemory(xml_string.c_str(), xml_string.size());
|
||||
}
|
||||
|
||||
bool XMLDocument::ParseMemory(const char* data, size_t size) {
|
||||
XMLTokenizer tokenizer;
|
||||
|
||||
if (!tokenizer.Initialize(data, size)) {
|
||||
error_ = "Failed to initialize tokenizer: " + tokenizer.GetError();
|
||||
return false;
|
||||
}
|
||||
|
||||
// Skip any processing instructions at the beginning
|
||||
Token token;
|
||||
while (tokenizer.NextToken(token)) {
|
||||
if (token.type == TokenType::ProcessingInstruction) {
|
||||
// Skip XML declaration
|
||||
continue;
|
||||
} else if (token.type == TokenType::StartTag) {
|
||||
// Found root element
|
||||
root_ = std::make_shared<XMLNode>(token.name);
|
||||
|
||||
// Parse attributes of root element
|
||||
if (!ParseAttributes(tokenizer, root_)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse children
|
||||
current_depth_ = 1;
|
||||
if (!ParseNode(tokenizer, root_)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
break;
|
||||
} else if (token.type == TokenType::EndOfDocument) {
|
||||
error_ = "No root element found";
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!root_) {
|
||||
error_ = "Failed to parse root element";
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLDocument::ParseAttributes(XMLTokenizer& tokenizer, XMLNodePtr node) {
|
||||
Token token;
|
||||
|
||||
while (tokenizer.NextToken(token)) {
|
||||
if (token.type == TokenType::Attribute) {
|
||||
node->SetAttribute(token.name, token.value);
|
||||
} else if (token.type == TokenType::SelfClosingTag) {
|
||||
// Node is self-closing, no children
|
||||
return true;
|
||||
} else {
|
||||
// End of attributes, put token back for next parse
|
||||
// Since we can't put back, we'll handle this in ParseNode
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLDocument::ParseNode(XMLTokenizer& tokenizer, XMLNodePtr parent) {
|
||||
if (current_depth_ > MAX_DEPTH) {
|
||||
error_ = "Maximum nesting depth exceeded";
|
||||
return false;
|
||||
}
|
||||
|
||||
Token token;
|
||||
std::string accumulated_text;
|
||||
|
||||
while (tokenizer.NextToken(token)) {
|
||||
switch (token.type) {
|
||||
case TokenType::StartTag: {
|
||||
// Save any accumulated text first
|
||||
if (!accumulated_text.empty()) {
|
||||
// Trim whitespace
|
||||
size_t start = accumulated_text.find_first_not_of(" \t\n\r");
|
||||
size_t end = accumulated_text.find_last_not_of(" \t\n\r");
|
||||
if (start != std::string::npos && end != std::string::npos) {
|
||||
parent->SetText(accumulated_text.substr(start, end - start + 1));
|
||||
}
|
||||
accumulated_text.clear();
|
||||
}
|
||||
|
||||
// Create new child node
|
||||
auto child = std::make_shared<XMLNode>(token.name);
|
||||
parent->AddChild(child);
|
||||
|
||||
// Parse attributes
|
||||
bool self_closing = false;
|
||||
Token attr_token;
|
||||
while (tokenizer.NextToken(attr_token)) {
|
||||
if (attr_token.type == TokenType::Attribute) {
|
||||
child->SetAttribute(attr_token.name, attr_token.value);
|
||||
} else if (attr_token.type == TokenType::SelfClosingTag) {
|
||||
self_closing = true;
|
||||
break;
|
||||
} else {
|
||||
// Not an attribute, this starts the content
|
||||
// We need to handle this token
|
||||
if (attr_token.type == TokenType::Text) {
|
||||
// This is text content for the child
|
||||
child->SetText(attr_token.value);
|
||||
} else if (attr_token.type == TokenType::StartTag) {
|
||||
// This is a nested child, parse recursively
|
||||
auto nested = std::make_shared<XMLNode>(attr_token.name);
|
||||
child->AddChild(nested);
|
||||
|
||||
// Parse nested attributes
|
||||
if (!ParseAttributes(tokenizer, nested)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Parse nested children
|
||||
current_depth_++;
|
||||
if (!ParseNode(tokenizer, nested)) {
|
||||
return false;
|
||||
}
|
||||
current_depth_--;
|
||||
} else if (attr_token.type == TokenType::EndTag) {
|
||||
// This ends the child element
|
||||
if (attr_token.name != child->GetName()) {
|
||||
error_ = "Mismatched end tag: expected </" + child->GetName() +
|
||||
"> but got </" + attr_token.name + ">";
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!self_closing) {
|
||||
// Parse children recursively
|
||||
current_depth_++;
|
||||
if (!ParseNode(tokenizer, child)) {
|
||||
return false;
|
||||
}
|
||||
current_depth_--;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case TokenType::EndTag:
|
||||
// Save any accumulated text first
|
||||
if (!accumulated_text.empty()) {
|
||||
// Trim whitespace
|
||||
size_t start = accumulated_text.find_first_not_of(" \t\n\r");
|
||||
size_t end = accumulated_text.find_last_not_of(" \t\n\r");
|
||||
if (start != std::string::npos && end != std::string::npos) {
|
||||
parent->SetText(accumulated_text.substr(start, end - start + 1));
|
||||
}
|
||||
}
|
||||
|
||||
if (token.name != parent->GetName()) {
|
||||
error_ = "Mismatched end tag: expected </" + parent->GetName() +
|
||||
"> but got </" + token.name + ">";
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
|
||||
case TokenType::Text:
|
||||
case TokenType::CDATA:
|
||||
accumulated_text += token.value;
|
||||
break;
|
||||
|
||||
case TokenType::Comment:
|
||||
// Ignore comments
|
||||
break;
|
||||
|
||||
case TokenType::EndOfDocument:
|
||||
// Unexpected end of document
|
||||
error_ = "Unexpected end of document while parsing <" + parent->GetName() + ">";
|
||||
return false;
|
||||
|
||||
default:
|
||||
error_ = "Unexpected token type";
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
XMLNodePtr XMLDocument::FindNode(const std::string& path) const {
|
||||
if (root_) {
|
||||
return root_->FindNode(path);
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
std::vector<XMLNodePtr> XMLDocument::FindNodes(const std::string& path) const {
|
||||
if (root_) {
|
||||
return root_->FindNodes(path);
|
||||
}
|
||||
return {};
|
||||
}
|
||||
|
||||
// MaterialXParser implementation
|
||||
|
||||
bool MaterialXParser::Parse(const std::string& xml_string) {
|
||||
if (!document_.ParseString(xml_string)) {
|
||||
error_ = document_.GetError();
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check if root is materialx
|
||||
auto root = document_.GetRoot();
|
||||
if (!root || root->GetName() != "materialx") {
|
||||
error_ = "Root element must be <materialx>";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Validate version
|
||||
std::string version = root->GetAttribute("version");
|
||||
if (version.empty()) {
|
||||
error_ = "Missing version attribute in <materialx>";
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!ValidateVersion(version)) {
|
||||
warning_ = "Unknown MaterialX version: " + version;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool MaterialXParser::ParseFile(const std::string& filename) {
|
||||
std::ifstream file(filename, std::ios::binary);
|
||||
if (!file) {
|
||||
error_ = "Failed to open file: " + filename;
|
||||
return false;
|
||||
}
|
||||
|
||||
// Read file content
|
||||
std::stringstream buffer;
|
||||
buffer << file.rdbuf();
|
||||
|
||||
return Parse(buffer.str());
|
||||
}
|
||||
|
||||
bool MaterialXParser::Validate() {
|
||||
auto root = document_.GetRoot();
|
||||
if (!root) {
|
||||
error_ = "No document to validate";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Validate all nodes recursively
|
||||
return ValidateNode(root);
|
||||
}
|
||||
|
||||
std::string MaterialXParser::GetVersion() const {
|
||||
auto root = document_.GetRoot();
|
||||
if (root) {
|
||||
return root->GetAttribute("version");
|
||||
}
|
||||
return "";
|
||||
}
|
||||
|
||||
std::string MaterialXParser::GetColorSpace() const {
|
||||
auto root = document_.GetRoot();
|
||||
if (root) {
|
||||
return root->GetAttribute("colorspace");
|
||||
}
|
||||
return "";
|
||||
}
|
||||
|
||||
std::string MaterialXParser::GetNamespace() const {
|
||||
auto root = document_.GetRoot();
|
||||
if (root) {
|
||||
return root->GetAttribute("namespace");
|
||||
}
|
||||
return "";
|
||||
}
|
||||
|
||||
bool MaterialXParser::ValidateVersion(const std::string& version) {
|
||||
// MaterialX versions we support
|
||||
static const std::vector<std::string> supported_versions = {
|
||||
"1.38", "1.37", "1.36"
|
||||
};
|
||||
|
||||
return std::find(supported_versions.begin(), supported_versions.end(), version) !=
|
||||
supported_versions.end();
|
||||
}
|
||||
|
||||
bool MaterialXParser::ValidateNode(XMLNodePtr node) {
|
||||
if (!node) return false;
|
||||
|
||||
const std::string& name = node->GetName();
|
||||
|
||||
// Validate known MaterialX elements
|
||||
static const std::vector<std::string> valid_elements = {
|
||||
"materialx", "nodegraph", "node", "input", "output", "token",
|
||||
"variant", "variantset", "variantassign", "visibility",
|
||||
"collection", "geom", "material", "surfacematerial",
|
||||
"volumematerial", "look", "property", "propertyset",
|
||||
"propertyassign", "materialassign", "geominfo", "geomprop",
|
||||
"implementation", "nodeDef", "typedef", "member", "unit",
|
||||
"unitdef", "unittypedef", "targetdef", "attributedef"
|
||||
};
|
||||
|
||||
bool valid = std::find(valid_elements.begin(), valid_elements.end(), name) !=
|
||||
valid_elements.end();
|
||||
|
||||
if (!valid) {
|
||||
warning_ += "Unknown element: <" + name + ">\n";
|
||||
}
|
||||
|
||||
// Validate type attribute if present
|
||||
std::string type = node->GetAttribute("type");
|
||||
if (!type.empty() && !ValidateType(type)) {
|
||||
warning_ += "Unknown type: " + type + " in <" + name + ">\n";
|
||||
}
|
||||
|
||||
// Validate children recursively
|
||||
for (const auto& child : node->GetChildren()) {
|
||||
if (!ValidateNode(child)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool MaterialXParser::ValidateType(const std::string& type_name) {
|
||||
static const std::vector<std::string> valid_types = {
|
||||
"integer", "boolean", "float", "color3", "color4",
|
||||
"vector2", "vector3", "vector4", "matrix33", "matrix44",
|
||||
"string", "filename", "integerarray", "floatarray",
|
||||
"vector2array", "vector3array", "vector4array",
|
||||
"color3array", "color4array", "stringarray",
|
||||
"surfaceshader", "displacementshader", "volumeshader",
|
||||
"lightshader", "geomname", "geomnamearray"
|
||||
};
|
||||
|
||||
return std::find(valid_types.begin(), valid_types.end(), type_name) !=
|
||||
valid_types.end();
|
||||
}
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
491
sandbox/mtlx-parser/src/mtlx-xml-tokenizer.cc
Normal file
491
sandbox/mtlx-parser/src/mtlx-xml-tokenizer.cc
Normal file
@@ -0,0 +1,491 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
|
||||
#include "../include/mtlx-xml-tokenizer.hh"
|
||||
#include <algorithm>
|
||||
#include <cctype>
|
||||
|
||||
namespace tinyusdz {
|
||||
namespace mtlx {
|
||||
|
||||
bool XMLTokenizer::Initialize(const char* data, size_t size, size_t max_size) {
|
||||
if (!data) {
|
||||
error_ = "Input data is null";
|
||||
return false;
|
||||
}
|
||||
|
||||
if (size > max_size) {
|
||||
error_ = "Input size exceeds maximum allowed size";
|
||||
return false;
|
||||
}
|
||||
|
||||
data_ = data;
|
||||
size_ = size;
|
||||
position_ = 0;
|
||||
current_line_ = 1;
|
||||
current_column_ = 1;
|
||||
in_tag_ = false;
|
||||
error_.clear();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
char XMLTokenizer::PeekChar(size_t offset) const {
|
||||
size_t pos = position_ + offset;
|
||||
if (pos >= size_) {
|
||||
return '\0';
|
||||
}
|
||||
return data_[pos];
|
||||
}
|
||||
|
||||
char XMLTokenizer::NextChar() {
|
||||
if (position_ >= size_) {
|
||||
return '\0';
|
||||
}
|
||||
char c = data_[position_++];
|
||||
UpdatePosition(c);
|
||||
return c;
|
||||
}
|
||||
|
||||
void XMLTokenizer::UpdatePosition(char c) {
|
||||
if (c == '\n') {
|
||||
current_line_++;
|
||||
current_column_ = 1;
|
||||
} else if (c != '\r') {
|
||||
current_column_++;
|
||||
}
|
||||
}
|
||||
|
||||
bool XMLTokenizer::Match(const char* str) {
|
||||
if (!str) return false;
|
||||
|
||||
size_t len = std::strlen(str);
|
||||
if (position_ + len > size_) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return std::memcmp(data_ + position_, str, len) == 0;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::Consume(const char* str) {
|
||||
if (!Match(str)) return false;
|
||||
|
||||
size_t len = std::strlen(str);
|
||||
for (size_t i = 0; i < len; ++i) {
|
||||
NextChar();
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::SkipWhitespace() {
|
||||
bool skipped = false;
|
||||
while (position_ < size_) {
|
||||
char c = PeekChar();
|
||||
if (c == ' ' || c == '\t' || c == '\n' || c == '\r') {
|
||||
NextChar();
|
||||
skipped = true;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return skipped;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseName(std::string& name) {
|
||||
name.clear();
|
||||
|
||||
char c = PeekChar();
|
||||
// XML name must start with letter or underscore
|
||||
if (!std::isalpha(c) && c != '_' && c != ':') {
|
||||
return false;
|
||||
}
|
||||
|
||||
while (position_ < size_ && name.length() < MAX_NAME_LENGTH) {
|
||||
c = PeekChar();
|
||||
if (std::isalnum(c) || c == '_' || c == '-' || c == '.' || c == ':') {
|
||||
name += NextChar();
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (name.length() >= MAX_NAME_LENGTH) {
|
||||
error_ = "Name exceeds maximum length";
|
||||
return false;
|
||||
}
|
||||
|
||||
return !name.empty();
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseQuotedString(std::string& str, char quote) {
|
||||
str.clear();
|
||||
|
||||
if (PeekChar() != quote) {
|
||||
return false;
|
||||
}
|
||||
NextChar(); // Consume opening quote
|
||||
|
||||
while (position_ < size_ && str.length() < MAX_STRING_LENGTH) {
|
||||
char c = PeekChar();
|
||||
if (c == quote) {
|
||||
NextChar(); // Consume closing quote
|
||||
return true;
|
||||
} else if (c == '&') {
|
||||
// Handle XML entities
|
||||
if (Match("<")) {
|
||||
Consume("<");
|
||||
str += '<';
|
||||
} else if (Match(">")) {
|
||||
Consume(">");
|
||||
str += '>';
|
||||
} else if (Match("&")) {
|
||||
Consume("&");
|
||||
str += '&';
|
||||
} else if (Match(""")) {
|
||||
Consume(""");
|
||||
str += '"';
|
||||
} else if (Match("'")) {
|
||||
Consume("'");
|
||||
str += '\'';
|
||||
} else {
|
||||
// Unknown entity, treat as literal
|
||||
str += NextChar();
|
||||
}
|
||||
} else if (c == '\0') {
|
||||
error_ = "Unexpected end of input in quoted string";
|
||||
return false;
|
||||
} else {
|
||||
str += NextChar();
|
||||
}
|
||||
}
|
||||
|
||||
if (str.length() >= MAX_STRING_LENGTH) {
|
||||
error_ = "String exceeds maximum length";
|
||||
return false;
|
||||
}
|
||||
|
||||
error_ = "Unterminated quoted string";
|
||||
return false;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseUntil(std::string& str, const char* delimiter) {
|
||||
str.clear();
|
||||
size_t delim_len = std::strlen(delimiter);
|
||||
|
||||
while (position_ < size_ && str.length() < MAX_TEXT_LENGTH) {
|
||||
if (Match(delimiter)) {
|
||||
return true;
|
||||
}
|
||||
str += NextChar();
|
||||
}
|
||||
|
||||
if (str.length() >= MAX_TEXT_LENGTH) {
|
||||
error_ = "Text exceeds maximum length";
|
||||
return false;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseComment(Token& token) {
|
||||
if (!Consume("<!--")) {
|
||||
return false;
|
||||
}
|
||||
|
||||
token.type = TokenType::Comment;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseUntil(token.value, "-->")) {
|
||||
error_ = "Unterminated comment";
|
||||
return false;
|
||||
}
|
||||
|
||||
Consume("-->");
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseCDATA(Token& token) {
|
||||
if (!Consume("<![CDATA[")) {
|
||||
return false;
|
||||
}
|
||||
|
||||
token.type = TokenType::CDATA;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseUntil(token.value, "]]>")) {
|
||||
error_ = "Unterminated CDATA section";
|
||||
return false;
|
||||
}
|
||||
|
||||
Consume("]]>");
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseProcessingInstruction(Token& token) {
|
||||
if (!Consume("<?")) {
|
||||
return false;
|
||||
}
|
||||
|
||||
token.type = TokenType::ProcessingInstruction;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseName(token.name)) {
|
||||
error_ = "Invalid processing instruction name";
|
||||
return false;
|
||||
}
|
||||
|
||||
SkipWhitespace();
|
||||
|
||||
if (!ParseUntil(token.value, "?>")) {
|
||||
error_ = "Unterminated processing instruction";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Trim trailing whitespace from value
|
||||
while (!token.value.empty() && std::isspace(token.value.back())) {
|
||||
token.value.pop_back();
|
||||
}
|
||||
|
||||
Consume("?>");
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseStartTag(Token& token) {
|
||||
if (PeekChar() != '<') {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check for special cases
|
||||
if (Match("<!--")) {
|
||||
return ParseComment(token);
|
||||
}
|
||||
if (Match("<![CDATA[")) {
|
||||
return ParseCDATA(token);
|
||||
}
|
||||
if (Match("<?")) {
|
||||
return ParseProcessingInstruction(token);
|
||||
}
|
||||
if (Match("</")) {
|
||||
return ParseEndTag(token);
|
||||
}
|
||||
|
||||
NextChar(); // Consume '<'
|
||||
|
||||
token.type = TokenType::StartTag;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseName(token.name)) {
|
||||
error_ = "Invalid tag name";
|
||||
return false;
|
||||
}
|
||||
|
||||
current_tag_name_ = token.name;
|
||||
in_tag_ = true;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseEndTag(Token& token) {
|
||||
if (!Consume("</")) {
|
||||
return false;
|
||||
}
|
||||
|
||||
token.type = TokenType::EndTag;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseName(token.name)) {
|
||||
error_ = "Invalid end tag name";
|
||||
return false;
|
||||
}
|
||||
|
||||
SkipWhitespace();
|
||||
|
||||
if (PeekChar() != '>') {
|
||||
error_ = "Expected '>' after end tag name";
|
||||
return false;
|
||||
}
|
||||
NextChar();
|
||||
|
||||
in_tag_ = false;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseAttribute(Token& token) {
|
||||
if (!in_tag_) {
|
||||
return false;
|
||||
}
|
||||
|
||||
SkipWhitespace();
|
||||
|
||||
// Check for tag closure
|
||||
if (Match("/>")) {
|
||||
Consume("/>");
|
||||
token.type = TokenType::SelfClosingTag;
|
||||
token.name = current_tag_name_;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
in_tag_ = false;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (PeekChar() == '>') {
|
||||
NextChar();
|
||||
in_tag_ = false;
|
||||
// Return to indicate end of attributes, caller should retry for content
|
||||
return false;
|
||||
}
|
||||
|
||||
token.type = TokenType::Attribute;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
|
||||
if (!ParseName(token.name)) {
|
||||
error_ = "Invalid attribute name";
|
||||
return false;
|
||||
}
|
||||
|
||||
SkipWhitespace();
|
||||
|
||||
if (PeekChar() != '=') {
|
||||
// Attribute without value (like HTML boolean attributes)
|
||||
token.value.clear();
|
||||
return true;
|
||||
}
|
||||
NextChar(); // Consume '='
|
||||
|
||||
SkipWhitespace();
|
||||
|
||||
char quote = PeekChar();
|
||||
if (quote != '"' && quote != '\'') {
|
||||
error_ = "Expected quoted attribute value";
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!ParseQuotedString(token.value, quote)) {
|
||||
error_ = "Invalid attribute value";
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool XMLTokenizer::ParseText(Token& token) {
|
||||
token.type = TokenType::Text;
|
||||
token.line = current_line_;
|
||||
token.column = current_column_;
|
||||
token.value.clear();
|
||||
|
||||
while (position_ < size_ && token.value.length() < MAX_TEXT_LENGTH) {
|
||||
char c = PeekChar();
|
||||
if (c == '<') {
|
||||
// End of text content
|
||||
break;
|
||||
} else if (c == '&') {
|
||||
// Handle XML entities
|
||||
if (Match("<")) {
|
||||
Consume("<");
|
||||
token.value += '<';
|
||||
} else if (Match(">")) {
|
||||
Consume(">");
|
||||
token.value += '>';
|
||||
} else if (Match("&")) {
|
||||
Consume("&");
|
||||
token.value += '&';
|
||||
} else if (Match(""")) {
|
||||
Consume(""");
|
||||
token.value += '"';
|
||||
} else if (Match("'")) {
|
||||
Consume("'");
|
||||
token.value += '\'';
|
||||
} else {
|
||||
// Unknown entity, treat as literal
|
||||
token.value += NextChar();
|
||||
}
|
||||
} else {
|
||||
token.value += NextChar();
|
||||
}
|
||||
}
|
||||
|
||||
if (token.value.length() >= MAX_TEXT_LENGTH) {
|
||||
error_ = "Text content exceeds maximum length";
|
||||
return false;
|
||||
}
|
||||
|
||||
// Trim whitespace-only text between tags
|
||||
bool all_whitespace = true;
|
||||
for (char c : token.value) {
|
||||
if (!std::isspace(c)) {
|
||||
all_whitespace = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (all_whitespace && !token.value.empty()) {
|
||||
// Skip whitespace-only text, try next token
|
||||
return NextToken(token);
|
||||
}
|
||||
|
||||
return !token.value.empty();
|
||||
}
|
||||
|
||||
bool XMLTokenizer::NextToken(Token& token) {
|
||||
token = Token();
|
||||
|
||||
if (position_ >= size_) {
|
||||
token.type = TokenType::EndOfDocument;
|
||||
return true;
|
||||
}
|
||||
|
||||
// If we're inside a tag, parse attributes
|
||||
if (in_tag_) {
|
||||
if (ParseAttribute(token)) {
|
||||
return true;
|
||||
}
|
||||
// ParseAttribute returns false when tag closes, continue to next token
|
||||
}
|
||||
|
||||
// Skip whitespace between tags
|
||||
SkipWhitespace();
|
||||
|
||||
if (position_ >= size_) {
|
||||
token.type = TokenType::EndOfDocument;
|
||||
return true;
|
||||
}
|
||||
|
||||
// Check what's next
|
||||
char c = PeekChar();
|
||||
|
||||
if (c == '<') {
|
||||
return ParseStartTag(token);
|
||||
} else {
|
||||
return ParseText(token);
|
||||
}
|
||||
}
|
||||
|
||||
bool XMLTokenizer::PeekToken(Token& token) {
|
||||
// Save current state
|
||||
size_t saved_pos = position_;
|
||||
size_t saved_line = current_line_;
|
||||
size_t saved_col = current_column_;
|
||||
bool saved_in_tag = in_tag_;
|
||||
std::string saved_tag_name = current_tag_name_;
|
||||
|
||||
// Get next token
|
||||
bool result = NextToken(token);
|
||||
|
||||
// Restore state
|
||||
position_ = saved_pos;
|
||||
current_line_ = saved_line;
|
||||
current_column_ = saved_col;
|
||||
in_tag_ = saved_in_tag;
|
||||
current_tag_name_ = saved_tag_name;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
} // namespace mtlx
|
||||
} // namespace tinyusdz
|
||||
66
sandbox/mtlx-parser/tests/debug_parser.cc
Normal file
66
sandbox/mtlx-parser/tests/debug_parser.cc
Normal file
@@ -0,0 +1,66 @@
|
||||
// Debug XML parser
|
||||
|
||||
#include "../include/mtlx-xml-parser.hh"
|
||||
#include <iostream>
|
||||
|
||||
using namespace tinyusdz::mtlx;
|
||||
|
||||
int main() {
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38">
|
||||
<nodegraph name="test"/>
|
||||
</materialx>
|
||||
)";
|
||||
|
||||
std::cout << "Parsing simple XML..." << std::endl;
|
||||
|
||||
XMLDocument doc;
|
||||
if (!doc.ParseString(xml)) {
|
||||
std::cerr << "Parse failed: " << doc.GetError() << std::endl;
|
||||
|
||||
// Try with tokenizer directly
|
||||
XMLTokenizer tokenizer;
|
||||
if (!tokenizer.Initialize(xml, std::strlen(xml))) {
|
||||
std::cerr << "Tokenizer init failed: " << tokenizer.GetError() << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
Token token;
|
||||
while (tokenizer.NextToken(token)) {
|
||||
if (token.type == TokenType::Error) {
|
||||
std::cerr << "Token error at " << token.line << ":" << token.column << std::endl;
|
||||
break;
|
||||
}
|
||||
if (token.type == TokenType::EndOfDocument) break;
|
||||
|
||||
switch (token.type) {
|
||||
case TokenType::StartTag:
|
||||
std::cout << "Start: " << token.name << std::endl;
|
||||
break;
|
||||
case TokenType::EndTag:
|
||||
std::cout << "End: " << token.name << std::endl;
|
||||
break;
|
||||
case TokenType::Attribute:
|
||||
std::cout << " Attr: " << token.name << "=" << token.value << std::endl;
|
||||
break;
|
||||
case TokenType::SelfClosingTag:
|
||||
std::cout << "SelfClose: " << token.name << std::endl;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
std::cout << "Parse succeeded!" << std::endl;
|
||||
|
||||
auto root = doc.GetRoot();
|
||||
if (root) {
|
||||
std::cout << "Root: " << root->GetName() << std::endl;
|
||||
std::cout << "Version: " << root->GetAttribute("version") << std::endl;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
83
sandbox/mtlx-parser/tests/test_adapter.cc
Normal file
83
sandbox/mtlx-parser/tests/test_adapter.cc
Normal file
@@ -0,0 +1,83 @@
|
||||
// Test the usdMtlx adapter
|
||||
|
||||
#include "../include/mtlx-usd-adapter.hh"
|
||||
#include <iostream>
|
||||
#include <cassert>
|
||||
|
||||
int main() {
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38" colorspace="lin_rec709">
|
||||
<standard_surface name="SR_default" type="surfaceshader">
|
||||
<input name="base" type="float" value="1.0"/>
|
||||
<input name="base_color" type="color3" value="0.8, 0.8, 0.8"/>
|
||||
</standard_surface>
|
||||
|
||||
<surfacematerial name="M_default" type="material">
|
||||
<shaderref name="surfaceshader" node="SR_default"/>
|
||||
</surfacematerial>
|
||||
</materialx>)";
|
||||
|
||||
// Test using pugixml-like API
|
||||
tinyusdz::mtlx::pugi::xml_document doc;
|
||||
tinyusdz::mtlx::pugi::xml_parse_result result = doc.load_string(xml);
|
||||
|
||||
if (!result) {
|
||||
std::cerr << "Parse failed: " << result.description() << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
tinyusdz::mtlx::pugi::xml_node root = doc.child("materialx");
|
||||
if (!root) {
|
||||
std::cerr << "Root not found" << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Test attributes
|
||||
tinyusdz::mtlx::pugi::xml_attribute ver_attr = root.attribute("version");
|
||||
if (!ver_attr) {
|
||||
std::cerr << "Version attribute not found" << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
std::cout << "Version: " << ver_attr.as_string() << std::endl;
|
||||
assert(std::string(ver_attr.as_string()) == "1.38");
|
||||
|
||||
// Test child access
|
||||
tinyusdz::mtlx::pugi::xml_node shader = root.child("standard_surface");
|
||||
if (!shader) {
|
||||
std::cerr << "Shader not found" << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
std::cout << "Shader name: " << shader.attribute("name").as_string() << std::endl;
|
||||
assert(std::string(shader.attribute("name").as_string()) == "SR_default");
|
||||
|
||||
// Test iteration
|
||||
std::cout << "\nInputs:" << std::endl;
|
||||
for (tinyusdz::mtlx::pugi::xml_node input : shader) {
|
||||
if (std::string(input.name()) == "input") {
|
||||
std::cout << " " << input.attribute("name").as_string()
|
||||
<< " = " << input.attribute("value").as_string() << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
// Test material
|
||||
tinyusdz::mtlx::pugi::xml_node material = root.child("surfacematerial");
|
||||
if (!material) {
|
||||
std::cerr << "Material not found" << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
tinyusdz::mtlx::pugi::xml_node shaderref = material.child("shaderref");
|
||||
if (!shaderref) {
|
||||
std::cerr << "Shaderref not found" << std::endl;
|
||||
return 1;
|
||||
}
|
||||
|
||||
std::cout << "\nMaterial " << material.attribute("name").as_string()
|
||||
<< " references shader: " << shaderref.attribute("node").as_string() << std::endl;
|
||||
|
||||
std::cout << "\nAll tests passed!" << std::endl;
|
||||
|
||||
return 0;
|
||||
}
|
||||
276
sandbox/mtlx-parser/tests/test_parser.cc
Normal file
276
sandbox/mtlx-parser/tests/test_parser.cc
Normal file
@@ -0,0 +1,276 @@
|
||||
// SPDX-License-Identifier: Apache 2.0
|
||||
// Test program for MaterialX parser
|
||||
|
||||
#include "../include/mtlx-dom.hh"
|
||||
#include <iostream>
|
||||
#include <cassert>
|
||||
|
||||
using namespace tinyusdz::mtlx;
|
||||
|
||||
void test_tokenizer() {
|
||||
std::cout << "Testing XML Tokenizer..." << std::endl;
|
||||
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38">
|
||||
<!-- This is a comment -->
|
||||
<nodegraph name="test_graph">
|
||||
<input name="base_color" type="color3" value="0.8, 0.8, 0.8"/>
|
||||
<image name="diffuse_texture" type="color3">
|
||||
<input name="file" type="filename" value="textures/diffuse.png"/>
|
||||
</image>
|
||||
</nodegraph>
|
||||
</materialx>
|
||||
)";
|
||||
|
||||
XMLTokenizer tokenizer;
|
||||
assert(tokenizer.Initialize(xml, std::strlen(xml)));
|
||||
|
||||
Token token;
|
||||
int token_count = 0;
|
||||
|
||||
while (tokenizer.NextToken(token)) {
|
||||
if (token.type == TokenType::EndOfDocument) break;
|
||||
token_count++;
|
||||
|
||||
switch (token.type) {
|
||||
case TokenType::ProcessingInstruction:
|
||||
std::cout << " PI: " << token.name << std::endl;
|
||||
break;
|
||||
case TokenType::StartTag:
|
||||
std::cout << " Start: <" << token.name << ">" << std::endl;
|
||||
break;
|
||||
case TokenType::EndTag:
|
||||
std::cout << " End: </" << token.name << ">" << std::endl;
|
||||
break;
|
||||
case TokenType::Attribute:
|
||||
std::cout << " Attr: " << token.name << "=\"" << token.value << "\"" << std::endl;
|
||||
break;
|
||||
case TokenType::Comment:
|
||||
std::cout << " Comment: " << token.value << std::endl;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
assert(token_count > 0);
|
||||
std::cout << " Tokenizer test passed (" << token_count << " tokens)" << std::endl;
|
||||
}
|
||||
|
||||
void test_xml_parser() {
|
||||
std::cout << "Testing XML Parser..." << std::endl;
|
||||
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38" colorspace="lin_rec709">
|
||||
<nodegraph name="test_graph">
|
||||
<input name="base_color" type="color3" value="0.8, 0.8, 0.8"/>
|
||||
<image name="diffuse_texture" type="color3">
|
||||
<input name="file" type="filename" value="textures/diffuse.png"/>
|
||||
<input name="uaddressmode" type="string" value="periodic"/>
|
||||
</image>
|
||||
<output name="out" type="color3" nodename="diffuse_texture"/>
|
||||
</nodegraph>
|
||||
</materialx>
|
||||
)";
|
||||
|
||||
XMLDocument doc;
|
||||
assert(doc.ParseString(xml));
|
||||
|
||||
auto root = doc.GetRoot();
|
||||
assert(root);
|
||||
assert(root->GetName() == "materialx");
|
||||
assert(root->GetAttribute("version") == "1.38");
|
||||
assert(root->GetAttribute("colorspace") == "lin_rec709");
|
||||
|
||||
auto nodegraph = root->GetChild("nodegraph");
|
||||
assert(nodegraph);
|
||||
assert(nodegraph->GetAttribute("name") == "test_graph");
|
||||
|
||||
auto image = nodegraph->GetChild("image");
|
||||
assert(image);
|
||||
assert(image->GetAttribute("name") == "diffuse_texture");
|
||||
|
||||
auto inputs = image->GetChildren("input");
|
||||
assert(inputs.size() == 2);
|
||||
|
||||
std::cout << " XML parser test passed" << std::endl;
|
||||
}
|
||||
|
||||
void test_materialx_parser() {
|
||||
std::cout << "Testing MaterialX Parser..." << std::endl;
|
||||
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38" colorspace="lin_rec709">
|
||||
<standard_surface name="SR_default" type="surfaceshader">
|
||||
<input name="base" type="float" value="1.0"/>
|
||||
<input name="base_color" type="color3" value="0.8, 0.8, 0.8"/>
|
||||
<input name="specular" type="float" value="1.0"/>
|
||||
<input name="specular_roughness" type="float" value="0.2"/>
|
||||
<input name="metalness" type="float" value="0.0"/>
|
||||
</standard_surface>
|
||||
|
||||
<surfacematerial name="M_default" type="material">
|
||||
<shaderref name="surfaceshader" node="SR_default"/>
|
||||
</surfacematerial>
|
||||
</materialx>
|
||||
)";
|
||||
|
||||
MaterialXParser parser;
|
||||
assert(parser.Parse(xml));
|
||||
assert(parser.GetVersion() == "1.38");
|
||||
assert(parser.GetColorSpace() == "lin_rec709");
|
||||
|
||||
// Validate the document
|
||||
assert(parser.Validate());
|
||||
|
||||
std::cout << " MaterialX parser test passed" << std::endl;
|
||||
}
|
||||
|
||||
void test_materialx_dom() {
|
||||
std::cout << "Testing MaterialX DOM..." << std::endl;
|
||||
|
||||
const char* xml = R"(<?xml version="1.0"?>
|
||||
<materialx version="1.38">
|
||||
<nodegraph name="NG_texture">
|
||||
<input name="file" type="filename" value="default.png"/>
|
||||
<image name="image1" type="color3">
|
||||
<input name="file" type="filename" interfacename="file"/>
|
||||
<input name="uaddressmode" type="string" value="periodic"/>
|
||||
<input name="vaddressmode" type="string" value="periodic"/>
|
||||
</image>
|
||||
<output name="out" type="color3" nodename="image1"/>
|
||||
</nodegraph>
|
||||
|
||||
<standard_surface name="SR_marble" type="surfaceshader">
|
||||
<input name="base" type="float" value="0.8"/>
|
||||
<input name="base_color" type="color3" nodename="NG_texture" output="out"/>
|
||||
<input name="specular_roughness" type="float" value="0.1"/>
|
||||
</standard_surface>
|
||||
|
||||
<surfacematerial name="M_marble" type="material">
|
||||
<shaderref name="surfaceshader" node="SR_marble"/>
|
||||
</surfacematerial>
|
||||
</materialx>
|
||||
)";
|
||||
|
||||
MtlxDocument doc;
|
||||
assert(doc.ParseFromXML(xml));
|
||||
assert(doc.GetVersion() == "1.38");
|
||||
|
||||
// Check nodegraph
|
||||
auto nodegraphs = doc.GetNodeGraphs();
|
||||
assert(nodegraphs.size() == 1);
|
||||
|
||||
auto ng = nodegraphs[0];
|
||||
assert(ng->GetName() == "NG_texture");
|
||||
assert(ng->GetInputs().size() == 1);
|
||||
assert(ng->GetNodes().size() == 1);
|
||||
assert(ng->GetOutputs().size() == 1);
|
||||
|
||||
// Check node
|
||||
auto image_node = ng->GetNode("image1");
|
||||
assert(image_node);
|
||||
assert(image_node->GetCategory() == "image");
|
||||
assert(image_node->GetInputs().size() == 3);
|
||||
|
||||
// Check shader
|
||||
auto nodes = doc.GetNodes();
|
||||
assert(nodes.size() == 1);
|
||||
|
||||
auto shader = nodes[0];
|
||||
assert(shader->GetName() == "SR_marble");
|
||||
assert(shader->GetCategory() == "standard_surface");
|
||||
|
||||
// Check material
|
||||
auto materials = doc.GetMaterials();
|
||||
assert(materials.size() == 1);
|
||||
|
||||
auto material = materials[0];
|
||||
assert(material->GetName() == "M_marble");
|
||||
assert(material->GetSurfaceShader() == "SR_marble");
|
||||
|
||||
std::cout << " MaterialX DOM test passed" << std::endl;
|
||||
}
|
||||
|
||||
void test_security_limits() {
|
||||
std::cout << "Testing security limits..." << std::endl;
|
||||
|
||||
// Test max string length
|
||||
std::string long_xml = R"(<?xml version="1.0"?><materialx version="1.38"><node name=")";
|
||||
for (int i = 0; i < 300; ++i) {
|
||||
long_xml += "a";
|
||||
}
|
||||
long_xml += R"("></node></materialx>)";
|
||||
|
||||
XMLTokenizer tokenizer;
|
||||
assert(tokenizer.Initialize(long_xml.c_str(), long_xml.size()));
|
||||
|
||||
Token token;
|
||||
bool found_error = false;
|
||||
while (tokenizer.NextToken(token)) {
|
||||
if (token.type == TokenType::Error) {
|
||||
found_error = true;
|
||||
break;
|
||||
}
|
||||
if (token.type == TokenType::EndOfDocument) break;
|
||||
}
|
||||
|
||||
// Should have hit the name length limit
|
||||
assert(found_error || tokenizer.GetError().find("exceeds maximum length") != std::string::npos);
|
||||
|
||||
// Test max nesting depth (this would be a very deep recursion)
|
||||
// We'll create a more reasonable test here
|
||||
std::string nested_xml = R"(<?xml version="1.0"?><materialx version="1.38">)";
|
||||
for (int i = 0; i < 100; ++i) {
|
||||
nested_xml += "<node" + std::to_string(i) + ">";
|
||||
}
|
||||
for (int i = 99; i >= 0; --i) {
|
||||
nested_xml += "</node" + std::to_string(i) + ">";
|
||||
}
|
||||
nested_xml += "</materialx>";
|
||||
|
||||
XMLDocument doc;
|
||||
// This should parse successfully as 100 levels is within our limit
|
||||
assert(doc.ParseString(nested_xml));
|
||||
|
||||
std::cout << " Security limits test passed" << std::endl;
|
||||
}
|
||||
|
||||
void test_error_handling() {
|
||||
std::cout << "Testing error handling..." << std::endl;
|
||||
|
||||
// Malformed XML
|
||||
const char* bad_xml1 = R"(<materialx version="1.38"><node></materialx>)";
|
||||
XMLDocument doc1;
|
||||
assert(!doc1.ParseString(bad_xml1));
|
||||
assert(!doc1.GetError().empty());
|
||||
|
||||
// Missing quotes
|
||||
const char* bad_xml2 = R"(<materialx version=1.38></materialx>)";
|
||||
XMLDocument doc2;
|
||||
assert(!doc2.ParseString(bad_xml2));
|
||||
|
||||
// Unclosed tag
|
||||
const char* bad_xml3 = R"(<materialx version="1.38"><node name="test")";
|
||||
XMLDocument doc3;
|
||||
assert(!doc3.ParseString(bad_xml3));
|
||||
|
||||
std::cout << " Error handling test passed" << std::endl;
|
||||
}
|
||||
|
||||
int main() {
|
||||
std::cout << "Running MaterialX parser tests..." << std::endl;
|
||||
std::cout << "=================================" << std::endl;
|
||||
|
||||
test_tokenizer();
|
||||
test_xml_parser();
|
||||
test_materialx_parser();
|
||||
test_materialx_dom();
|
||||
test_security_limits();
|
||||
test_error_handling();
|
||||
|
||||
std::cout << "=================================" << std::endl;
|
||||
std::cout << "All tests passed!" << std::endl;
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user