# HG changeset patch
# User František Kučera <franta-hg@frantovo.cz>
# Date 1603756794 -3600
# Node ID 3b197bf7a2314e5966f7062a2f2bdd3083a15429
# Parent  66db59d77033fd43336e6529aeaf4edea4da14dd
raw YAML events to DOM

diff -r 66db59d77033 -r 3b197bf7a231 src/CMakeLists.txt
--- a/src/CMakeLists.txt	Sun Oct 25 21:55:20 2020 +0100
+++ b/src/CMakeLists.txt	Tue Oct 27 00:59:54 2020 +0100
@@ -17,7 +17,7 @@
 
 # Relpipe libraries:
 INCLUDE(FindPkgConfig)
-pkg_check_modules (RELPIPE_LIBS relpipe-lib-writer.cpp relpipe-lib-cli.cpp libxml++-2.6)
+pkg_check_modules (RELPIPE_LIBS relpipe-lib-writer.cpp relpipe-lib-cli.cpp libxml++-2.6 yaml-0.1)
 include_directories(${RELPIPE_LIBS_INCLUDE_DIRS})
 link_directories(${RELPIPE_LIBS_LIBRARY_DIRS})
 
diff -r 66db59d77033 -r 3b197bf7a231 src/XMLDocumentConstructor.h
--- a/src/XMLDocumentConstructor.h	Sun Oct 25 21:55:20 2020 +0100
+++ b/src/XMLDocumentConstructor.h	Tue Oct 27 00:59:54 2020 +0100
@@ -20,19 +20,90 @@
 namespace in {
 namespace xmltable {
 
+#include <codecvt>
+
 #include <libxml++-2.6/libxml++/libxml++.h>
+#include <yaml.h>
 
 class XMLDocumentConstructor {
 private:
 	std::istream* input = nullptr;
 	xmlpp::DomParser* parser = nullptr;
+	yaml_parser_t yamlParser;
+
+	static int readFromInput(void* instance, unsigned char* buffer, size_t size, size_t* length) {
+		std::istream* input = ((XMLDocumentConstructor*) instance)->input;
+		input->read((char*) buffer, size);
+		*length = input->gcount();
+		return (input->good() || input->eof()) ? 1 : 0;
+	}
+	
+	/**
+	 * Both YAML and XML strings are in UTF-8.
+	 */
+	const char* y2x(yaml_char_t* value) {
+		return value ? (const char*) value : "";
+	}
+
 public:
 
 	XMLDocumentConstructor(std::istream* input, xmlpp::DomParser* parser) : input(input), parser(parser) {
+		yaml_parser_initialize(&yamlParser);
+		yaml_parser_set_input(&yamlParser, readFromInput, (void*) this);
+	}
+
+	virtual ~XMLDocumentConstructor() {
+		yaml_parser_delete(&yamlParser);
 	}
 
 	void process() {
-		parser->parse_stream(*input);
+		xmlpp::Element* root = parser->get_document()->create_root_node("yaml");
+
+		while (true) {
+			yaml_event_t event;
+
+			if (!yaml_parser_parse(&yamlParser, &event)) {
+				// FIXME: throw exception
+				std::wcerr << L"YAML error" << std::endl;
+				return;
+			}
+
+
+			if (event.type == YAML_STREAM_END_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_STREAM_END_EVENT");
+				yaml_event_delete(&event);
+				break;
+			} else if (event.type == YAML_STREAM_START_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_STREAM_START_EVENT");
+			} else if (event.type == YAML_NO_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_NO_EVENT");
+			} else if (event.type == YAML_DOCUMENT_START_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_DOCUMENT_START_EVENT");
+			} else if (event.type == YAML_DOCUMENT_END_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_DOCUMENT_END_EVENT");
+			} else if (event.type == YAML_ALIAS_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_ALIAS_EVENT");
+			} else if (event.type == YAML_SCALAR_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_SCALAR_EVENT");
+				e->set_attribute("value", y2x(event.data.scalar.value));
+				e->set_attribute("anchor", y2x(event.data.scalar.anchor));
+				e->set_attribute("tag", y2x(event.data.scalar.tag));
+				e->set_attribute("style", std::to_string(event.data.scalar.style));
+			} else if (event.type == YAML_SEQUENCE_START_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_SEQUENCE_START_EVENT");
+				e->set_attribute("style", std::to_string(event.data.sequence_start.style));
+			} else if (event.type == YAML_SEQUENCE_END_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_SEQUENCE_END_EVENT");
+			} else if (event.type == YAML_MAPPING_START_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_MAPPING_START_EVENT");
+			} else if (event.type == YAML_MAPPING_END_EVENT) {
+				xmlpp::Element* e = root->add_child("YAML_MAPPING_END_EVENT");
+			}
+
+			yaml_event_delete(&event);
+		}
+
+
 	}
 };