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/*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Context.cpp
* Copyright (C) 2011 Simon Newton
*/
#include <algorithm>
#include <string>
#include <vector>
#include "tools/ola_trigger/Context.h"
using std::ostringstream;
using std::string;
using std::vector;
const char Context::SLOT_VALUE_VARIABLE[] = "slot_value";
const char Context::SLOT_OFFSET_VARIABLE[] = "slot_offset";
/**
* Delete the context and all associated variables
*/
Context::~Context() {
m_variables.clear();
}
/**
* Lookup the value of a variable.
* @param name the variable name.
* @param value a pointer to a string to be updated with the value.
* @returns true if the variable was found, false if it wasn't.
*/
bool Context::Lookup(const string &name, string *value) const {
VariableMap::const_iterator iter = m_variables.find(name);
if (iter == m_variables.end())
return false;
*value = iter->second;
return true;
}
/**
* Update the value of a variable.
* @param name the variable name
* @param value the new value
*/
void Context::Update(const string &name, const string &value) {
m_variables[name] = value;
}
/**
* Set the slot value variable
*/
void Context::SetSlotValue(uint8_t value) {
ostringstream str;
str << static_cast<int>(value);
m_variables[SLOT_VALUE_VARIABLE] = str.str();
}
/**
* Set the slot offset variable
*/
void Context::SetSlotOffset(uint16_t offset) {
ostringstream str;
str << static_cast<int>(offset);
m_variables[SLOT_OFFSET_VARIABLE] = str.str();
}
/**
* Convert this context to a string
*/
string Context::AsString() const {
vector<string> keys;
keys.reserve(m_variables.size());
VariableMap::const_iterator map_iter = m_variables.begin();
for (; map_iter != m_variables.end(); ++map_iter)
keys.push_back(map_iter->first);
sort(keys.begin(), keys.end());
ostringstream str;
vector<string>::const_iterator iter = keys.begin();
for (; iter != keys.end(); ++iter) {
if (iter != keys.begin())
str << ", ";
map_iter = m_variables.find(*iter);
str << *iter << "=" << map_iter->second;
}
return str.str();
}
/**
* Stream operator
*/
std::ostream& operator<<(std::ostream &out, const Context &c) {
return out << c.AsString();
}
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