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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file Whiskers.h
* @author Chris <chis@ethereum.org>
* @date 2017
*
* Moustache-like templates.
*/
#pragma once
#include <libdevcore/Exceptions.h>
#include <string>
#include <map>
#include <vector>
namespace dev
{
DEV_SIMPLE_EXCEPTION(WhiskersError);
///
/// Moustache-like templates.
///
/// Usage:
/// std::vector<std::map<std::string, std::string>> listValues(2);
/// listValues[0]["k"] = "key1";
/// listValues[0]["v"] = "value1";
/// listValues[1]["k"] = "key2";
/// listValues[1]["v"] = "value2";
/// auto s = Whiskers("<p1>\n<#list><k> -> <v>\n</list>")
/// ("p1", "HEAD")
/// ("list", listValues)
/// .render();
///
/// results in s == "HEAD\nkey1 -> value1\nkey2 -> value2\n"
///
/// Note that lists cannot themselves contain lists - this would be a future feature.
class Whiskers
{
public:
using StringMap = std::map<std::string, std::string>;
using StringListMap = std::map<std::string, std::vector<StringMap>>;
explicit Whiskers(std::string const& _template);
/// Sets a single parameter, <paramName>.
Whiskers& operator()(std::string const& _parameter, std::string const& _value);
/// Sets a list parameter, <#listName> </listName>.
Whiskers& operator()(
std::string const& _listParameter,
std::vector<StringMap> const& _values
);
std::string render() const;
private:
static std::string replace(
std::string const& _template,
StringMap const& _parameters,
StringListMap const& _listParameters = StringListMap()
);
/// Joins the two maps throwing an exception if two keys are equal.
static StringMap joinMaps(StringMap const& _a, StringMap const& _b);
std::string m_template;
StringMap m_parameters;
StringListMap m_listParameters;
};
}
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