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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.cpp
* @author Chris <chis@ethereum.org>
* @date 2017
*
* Moustache-like templates.
*/
#include <libdevcore/Whiskers.h>
#include <libdevcore/Assertions.h>
#include <boost/regex.hpp>
using namespace std;
using namespace dev;
Whiskers::Whiskers(string const& _template):
m_template(_template)
{
}
Whiskers& Whiskers::operator ()(string const& _parameter, string const& _value)
{
assertThrow(
m_parameters.count(_parameter) == 0,
WhiskersError,
_parameter + " already set."
);
assertThrow(
m_listParameters.count(_parameter) == 0,
WhiskersError,
_parameter + " already set as list parameter."
);
m_parameters[_parameter] = _value;
return *this;
}
Whiskers& Whiskers::operator ()(
string const& _listParameter,
vector<map<string, string>> const& _values
)
{
assertThrow(
m_listParameters.count(_listParameter) == 0,
WhiskersError,
_listParameter + " already set."
);
assertThrow(
m_parameters.count(_listParameter) == 0,
WhiskersError,
_listParameter + " already set as value parameter."
);
m_listParameters[_listParameter] = _values;
return *this;
}
string Whiskers::render() const
{
return replace(m_template, m_parameters, m_listParameters);
}
string Whiskers::replace(
string const& _template,
StringMap const& _parameters,
map<string, vector<StringMap>> const& _listParameters
)
{
using namespace boost;
static regex listOrTag("<([^#/>]+)>|<#([^>]+)>(.*?)</\\2>");
return regex_replace(_template, listOrTag, [&](match_results<string::const_iterator> _match) -> string
{
string tagName(_match[1]);
if (!tagName.empty())
{
assertThrow(_parameters.count(tagName), WhiskersError, "Value for tag " + tagName + " not provided.");
return _parameters.at(tagName);
}
else
{
string listName(_match[2]);
string templ(_match[3]);
assertThrow(!listName.empty(), WhiskersError, "");
assertThrow(
_listParameters.count(listName),
WhiskersError, "List parameter " + listName + " not set."
);
string replacement;
for (auto const& parameters: _listParameters.at(listName))
replacement += replace(templ, joinMaps(_parameters, parameters));
return replacement;
}
});
}
Whiskers::StringMap Whiskers::joinMaps(
Whiskers::StringMap const& _a,
Whiskers::StringMap const& _b
)
{
Whiskers::StringMap ret = _a;
for (auto const& x: _b)
assertThrow(
ret.insert(x).second,
WhiskersError,
"Parameter collision"
);
return ret;
}
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