106 Zeilen
3.0 KiB
C++
106 Zeilen
3.0 KiB
C++
/* Copyright (c) 2018 Albert S.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
*/
|
|
#include <iostream>
|
|
#include "varreplacer.h"
|
|
#include "utils.h"
|
|
#include "logger.h"
|
|
// TODO: postfix
|
|
Varreplacer::Varreplacer(std::string_view prefix)
|
|
{
|
|
this->prefix = prefix;
|
|
}
|
|
|
|
std::tuple<std::string_view, std::string_view> Varreplacer::extractKeyAndValue(std::string_view var)
|
|
{
|
|
var.remove_prefix(prefix.length());
|
|
size_t colonPos = var.find(':');
|
|
// HACK
|
|
if(colonPos == std::string_view::npos)
|
|
{
|
|
std::string_view key = var;
|
|
std::string_view value = var;
|
|
return std::make_tuple(key, value);
|
|
}
|
|
std::string_view key = var.substr(0, colonPos);
|
|
std::string_view value = var.substr(colonPos + 1);
|
|
|
|
return std::make_tuple(key, value);
|
|
}
|
|
void Varreplacer::addResolver(std::string_view key, std::function<std::string(std::string_view)> resolver)
|
|
{
|
|
this->resolverFunctionsMap.insert(std::make_pair(key, resolver));
|
|
}
|
|
|
|
void Varreplacer::addKeyValue(std::string_view key, std::string value)
|
|
{
|
|
this->keyValues.insert(std::make_pair(key, value));
|
|
}
|
|
|
|
std::string Varreplacer::makeReplacement(std::string_view varkeyvalue)
|
|
{
|
|
std::string_view key;
|
|
std::string_view value;
|
|
|
|
std::tie(key, value) = extractKeyAndValue(varkeyvalue);
|
|
if(keyValues.contains(key))
|
|
{
|
|
std::string replacementContent = keyValues[key];
|
|
return replacementContent;
|
|
}
|
|
else if(resolverFunctionsMap.contains(key))
|
|
{
|
|
|
|
auto resolver = this->resolverFunctionsMap[key];
|
|
std::string replacementContent = resolver(value);
|
|
return replacementContent;
|
|
}
|
|
|
|
return std::string{varkeyvalue} + '}';
|
|
}
|
|
|
|
std::string Varreplacer::parse(std::string_view content)
|
|
{
|
|
std::string result;
|
|
|
|
size_t pos;
|
|
while((pos = content.find(prefix)) != std::string_view::npos)
|
|
{
|
|
if(pos != 0)
|
|
{
|
|
auto part = content.substr(0, pos);
|
|
|
|
result += part;
|
|
content.remove_prefix(pos);
|
|
}
|
|
auto endpos = content.find("}");
|
|
if(endpos == std::string_view::npos)
|
|
{
|
|
throw "misformated";
|
|
}
|
|
std::string_view varkeyvalue = content.substr(0, endpos);
|
|
result += makeReplacement(varkeyvalue);
|
|
content.remove_prefix(endpos + 1);
|
|
}
|
|
result += content;
|
|
|
|
return result;
|
|
}
|