HTMLDriver.cpp

/* Copyright 2020-2023 Fabian Groffen <grobian@gentoo.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License in the file COPYING for more details.
 */

#include "HTMLDriver.h"
#include "HTMLControl.h"
#include "HTMLParser.hh"
#include "iconvstream.h"

HTMLDriver::HTMLDriver(HTMLControl& c,
		iconvstream& os_,
		bool& enable_links_,
		int& width_,
		int& mode_,
		bool& debug_parser) :
	enable_links(enable_links_),
	control(c),
	trace_parsing(debug_parser),
	width(width_),
	mode(mode_),
	os(os_)
{
	links = new OrderedList;
	links->items.reset(new list<auto_ptr<ListItem>>);
	links->nesting = 0;
};

HTMLDriver::~HTMLDriver()
{
	if (links != nullptr)
		delete links;
}

int HTMLDriver::parse()
{
	html2text::HTMLParser parse(*this);
	parse.set_debug_level(trace_parsing);
	return parse();
}

int HTMLDriver::lex(html2text::HTMLParser::semantic_type * const lval)
{
	return control.htmlparser_yylex(lval);
}

void HTMLDriver::process(const Document& document)
{
	switch (mode) {
	case PRINT_AS_ASCII:
		if (enable_links && links->items->size() > 0) {
			Heading *h = new Heading;
			PCData *d = new PCData;
			h->level = 6;
			d->text = "References";
			list<auto_ptr<Element>> *data = new list<auto_ptr<Element>>;
			data->push_back(auto_ptr<Element>(d));
			h->content.reset(data);
			document.body.content->push_back(auto_ptr<Element>(h));
			document.body.content->push_back(auto_ptr<Element>(links));
			links = nullptr;  /* now taken by auto_ptr */
		}

		document.format(/*indent_left*/ 0, width, Area::LEFT, os);
		break;

	case SYNTAX_CHECK:
		break;

	default:
		std::cerr << "??? Invalid mode " << mode << " ??? " << std::endl;
		exit(1);
		break;
	}
}

bool HTMLDriver::read_cdata(const char *terminal, string *ret)
{
	return control.read_cdata(terminal, ret);
}

void HTMLDriver::yyerror(const char *msg)
{
	return control.htmlparser_yyerror(msg);
}