relpipe/relpipe-in-yamltable.cpp: src/XMLDocumentConstructor.h@3b197bf7a231 (annotated)

14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	1	/**
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	2	* Relational pipes
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	3	* Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info)
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	4	*
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	5	* This program is free software: you can redistribute it and/or modify
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	6	* it under the terms of the GNU General Public License as published by
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	7	* the Free Software Foundation, version 3 of the License.
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	8	*
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	9	* This program is distributed in the hope that it will be useful,
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	12	* GNU General Public License for more details.
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	13	*
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	14	* You should have received a copy of the GNU General Public License
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	15	* along with this program. If not, see <http://www.gnu.org/licenses/>.
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	16	*/
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	17	#pragma once
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	18
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	19	namespace relpipe {
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	20	namespace in {
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	21	namespace xmltable {
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	22
16 3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	23	#include <codecvt>
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	24
14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	25	#include <libxml++-2.6/libxml++/libxml++.h>
16 3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	26	#include <yaml.h>
14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	27
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	28	class XMLDocumentConstructor {
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	29	private:
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	30	std::istream* input = nullptr;
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	31	xmlpp::DomParser* parser = nullptr;
16 3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	32	yaml_parser_t yamlParser;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	33
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	34	static int readFromInput(void* instance, unsigned char* buffer, size_t size, size_t* length) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	35	std::istream* input = ((XMLDocumentConstructor*) instance)->input;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	36	input->read((char*) buffer, size);
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	37	*length = input->gcount();
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	38	return (input->good() \|\| input->eof()) ? 1 : 0;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	39	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	40
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	41	/**
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	42	* Both YAML and XML strings are in UTF-8.
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	43	*/
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	44	const char* y2x(yaml_char_t* value) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	45	return value ? (const char*) value : "";
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	46	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	47
14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	48	public:
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	49
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	50	XMLDocumentConstructor(std::istream* input, xmlpp::DomParser* parser) : input(input), parser(parser) {
16 3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	51	yaml_parser_initialize(&yamlParser);
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	52	yaml_parser_set_input(&yamlParser, readFromInput, (void*) this);
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	53	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	54
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	55	virtual ~XMLDocumentConstructor() {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	56	yaml_parser_delete(&yamlParser);
14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	57	}
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	58
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	59	void process() {
16 3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	60	xmlpp::Element* root = parser->get_document()->create_root_node("yaml");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	61
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	62	while (true) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	63	yaml_event_t event;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	64
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	65	if (!yaml_parser_parse(&yamlParser, &event)) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	66	// FIXME: throw exception
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	67	std::wcerr << L"YAML error" << std::endl;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	68	return;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	69	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	70
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	71
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	72	if (event.type == YAML_STREAM_END_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	73	xmlpp::Element* e = root->add_child("YAML_STREAM_END_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	74	yaml_event_delete(&event);
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	75	break;
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	76	} else if (event.type == YAML_STREAM_START_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	77	xmlpp::Element* e = root->add_child("YAML_STREAM_START_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	78	} else if (event.type == YAML_NO_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	79	xmlpp::Element* e = root->add_child("YAML_NO_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	80	} else if (event.type == YAML_DOCUMENT_START_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	81	xmlpp::Element* e = root->add_child("YAML_DOCUMENT_START_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	82	} else if (event.type == YAML_DOCUMENT_END_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	83	xmlpp::Element* e = root->add_child("YAML_DOCUMENT_END_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	84	} else if (event.type == YAML_ALIAS_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	85	xmlpp::Element* e = root->add_child("YAML_ALIAS_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	86	} else if (event.type == YAML_SCALAR_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	87	xmlpp::Element* e = root->add_child("YAML_SCALAR_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	88	e->set_attribute("value", y2x(event.data.scalar.value));
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	89	e->set_attribute("anchor", y2x(event.data.scalar.anchor));
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	90	e->set_attribute("tag", y2x(event.data.scalar.tag));
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	91	e->set_attribute("style", std::to_string(event.data.scalar.style));
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	92	} else if (event.type == YAML_SEQUENCE_START_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	93	xmlpp::Element* e = root->add_child("YAML_SEQUENCE_START_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	94	e->set_attribute("style", std::to_string(event.data.sequence_start.style));
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	95	} else if (event.type == YAML_SEQUENCE_END_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	96	xmlpp::Element* e = root->add_child("YAML_SEQUENCE_END_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	97	} else if (event.type == YAML_MAPPING_START_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	98	xmlpp::Element* e = root->add_child("YAML_MAPPING_START_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	99	} else if (event.type == YAML_MAPPING_END_EVENT) {
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	100	xmlpp::Element* e = root->add_child("YAML_MAPPING_END_EVENT");
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	101	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	102
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	103	yaml_event_delete(&event);
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	104	}
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	105
3b197bf7a231 raw YAML events to DOM František Kučera <franta-hg@frantovo.cz> parents: 14 diff changeset	106
14 5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	107	}
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	108	};
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	109
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	110	}
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	111	}
5be268bc4c69 separate the „std::istream to DOM“ phase František Kučera <franta-hg@frantovo.cz> parents: diff changeset	112	}

author	František Kučera <franta-hg@frantovo.cz>
	Tue, 27 Oct 2020 00:59:54 +0100
branch	v_0
changeset 16	3b197bf7a231
parent 14	5be268bc4c69
child 17	75c6685cceb9
permissions	-rw-r--r--