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/*
Copyright 2015 _that/TeamWin
This file is part of TWRP/TeamWin Recovery Project.
TWRP 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.
TWRP 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 TWRP. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../data.hpp"
#include "pages.hpp"
#include "resources.hpp"
#include "twmsg.h"
std::string Message::GetFormatString(const std::string& name) const
{
std::string resname;
size_t pos = name.find('=');
if (pos == std::string::npos)
resname = name;
else
resname = name.substr(0, pos);
std::string formatstr = resourceLookup(resname);
bool notfound = formatstr.empty() || formatstr[0] == '['; // HACK: TODO: integrate this with resource-not-found logic
if (notfound && pos != std::string::npos)
// resource not found - use the default format string specified after "="
formatstr = name.substr(pos + 1);
return formatstr;
}
// Look up in local replacement vars first, if not found then use outer lookup object
class LocalLookup : public StringLookup
{
const std::vector<std::string>& vars;
const StringLookup& next;
public:
LocalLookup(const std::vector<std::string>& vars, const StringLookup& next) : vars(vars), next(next) {}
virtual std::string operator()(const std::string& name) const
{
if (!name.empty() && isdigit(name[0])) { // {1}..{9}
int i = atoi(name.c_str());
if (i > 0 && i <= (int)vars.size())
return vars[i - 1];
}
return next(name);
}
};
// conversion to final string
Message::operator std::string() const
{
// do resource lookup
std::string str = GetFormatString(name);
LocalLookup lookup(variables, varLookup);
// now insert stuff into curly braces
size_t pos = 0;
while ((pos = str.find('{', pos)) < std::string::npos) {
size_t end = str.find('}', pos);
if (end == std::string::npos)
break;
std::string varname = str.substr(pos + 1, end - pos - 1);
std::string vartext = lookup(varname);
str.replace(pos, end - pos + 1, vartext);
}
// TODO: complain about too many or too few numbered replacement variables
return str;
}
/*
Resource manager lookup
*/
class ResourceLookup : public StringLookup
{
public:
virtual std::string operator()(const std::string& name) const
{
const ResourceManager* res = PageManager::GetResources();
if (res)
return res->FindString(name);
return name;
}
};
ResourceLookup resourceLookup;
/*
DataManager lookup
*/
class DataLookup : public StringLookup
{
public:
virtual std::string operator()(const std::string& name) const
{
std::string value;
if (DataManager::GetValue(name, value) == 0)
return value;
else
return "";
}
};
DataLookup dataLookup;
// Utility functions to create messages. Short names to make usage convenient.
Message Msg(const char* name)
{
return Message(msg::kNormal, name, resourceLookup, dataLookup);
}
Message Msg(msg::Kind kind, const char* name)
{
return Message(kind, name, resourceLookup, dataLookup);
}
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