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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/>.
*/
#ifndef twmsg_h
#define twmsg_h
#include <cstdlib>
#include <cstring>
#include <string>
#include <sstream>
#include <vector>
#include <errno.h>
/*
Abstract interface for something that can look up strings by name.
*/
class StringLookup
{
public:
virtual std::string operator()(const std::string& name) const = 0;
virtual ~StringLookup() {};
};
namespace msg
{
// These get translated to colors in the GUI console
enum Kind
{
kNormal,
kHighlight,
kWarning,
kError
};
template<typename T> std::string to_string(const T& v)
{
std::ostringstream ss;
ss << v;
return ss.str();
}
}
/*
Generic message formatting class.
Designed to decouple message generation from actual resource string lookup and variable insertion,
so that messages can be re-translated at any later time.
*/
class Message
{
msg::Kind kind; // severity or similar message kind
std::string name; // the resource string name. may be of format "name=default value".
std::vector<std::string> variables; // collected insertion variables to replace {1}, {2}, ...
const StringLookup& resourceLookup; // object to resolve resource string name into a final format string
const StringLookup& varLookup; // object to resolve any non-numeric insertion strings
std::string GetFormatString(const std::string& name) const;
public:
Message(msg::Kind kind, const char* name, const StringLookup& resourceLookup, const StringLookup& varLookup)
: kind(kind), name(name), resourceLookup(resourceLookup), varLookup(varLookup) {}
// Variable insertion.
template<typename T>
Message& operator()(const T& v) { variables.push_back(msg::to_string(v)); return *this; }
// conversion to final string
operator std::string() const;
// Get Message Kind
msg::Kind GetKind() {return kind;};
};
// Utility functions to create messages with standard resource and data manager lookups.
// Short names to make usage convenient.
Message Msg(const char* name);
Message Msg(msg::Kind kind, const char* name);
#endif
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