file.cpp

/*
 * Copyright (C) 2020  Ágústsson, Kjartan Óli <kjartanoli@protonmail.com>
 * Author: Ágústsson, Kjartan Óli <kjartanoli@protonmail.com>
 *
 * This file is a part of Texplate
 * Texplate 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 3 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <exception>
#include <fstream>
#include <json/value.h>
#include <string>
#include <vector>
#include <nlohmann/json.hpp>

#include "file.hpp"

// write to the file
void write(const arguments& args, const Json::Value& config)
{
	std::ofstream file{add_extension(args.fileName, ".tex")};

	file << "\\documentclass{" << args.docClass << "}\n\n"
	<< "\\usepackage[T1]{fontenc}\n\n"
	<< (args.encoding != ""  ? "\\usepackage[" + args.encoding + "]{inputenc}\n" : "")
	<< (args.language != ""  ? "\\usepackage[" + args.language + "]{babel}\n" : "");

	if (args.packages.size() > 0)
	{
		file << '\n';
		for (const std::string& package : args.packages)
		{
			file << add_options(config, package);
		}
		file << '\n';
	}

	if (args.bibsources.size() > 0)
	{
		file << '\n';
		for (const std::string& source : args.bibsources)
		{
			// check if the .bib extension needs to be added
			file << "\\addbibresource{" << add_extension(source, ".bib") << "}\n";
		}
	}
	file << (args.title != ""  ? "\\title{" + args.title + "}\n" : "")
	<< (args.author != "" ? "\\author{" + args.author + "}\n" : "")
	<< (args.date != "" ? "\\date{" + args.date + "}\n" : "")
	<< "\n\\begin{document}\n" << (args.author != "" || args.title != "" ? "\t\\maketitle\n" : "" )
	<< "\t\n\\end{document}\n";
}

// add the filextension if necessary
std::string add_extension(const std::string& fileName, const std::string&  extension)
{
	return (fileName.find(extension) == std::string::npos ? fileName + extension: fileName);
}

std::string add_options(const Json::Value& config, const std::string& package)
{
	std::vector<std::string> options{};
	if (config["options"][package])
	{
		for (auto& option : config["options"][package])
		{
			options.push_back(option.asString());
		}
	}

	if (options.size() > 0)
	{
		std::string command{"\\usepackage["};
		for (unsigned long i{0}, l{options.size()}; i < l; ++i)
		{
			if (i != l - 1)
			{
				command += options[i] + ", ";
			}
			else
			{
				command += options[i] + "]{" + package + "}\n";
			}
		}
		return command;
	}
	else
	{
		std::string command{"\\usepackage{" + package + "}\n"};
		return command;
	}
}