/* * Support for custom units * Copyright (C) 2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2012 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * 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 * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "units.h" #include "logger.h" #include "utils/stringutils.h" #include "utils/xml.h" #include <cmath> #include <climits> #include <vector> #include "debug.h" struct UnitLevel { std::string symbol; int count; int round; }; struct UnitDescription { std::vector<struct UnitLevel> levels; double conversion; bool mix; }; enum UnitType { UNIT_WEIGHT = 0, UNIT_CURRENCY = 1, UNIT_END }; std::string formatUnit(int value, int type); struct UnitDescription units[UNIT_END]; void Units::loadUnits() { { // Setup default weight struct UnitDescription ud; ud.conversion = 1.0; ud.mix = false; struct UnitLevel bu; bu.symbol = "g"; bu.count = 1; bu.round = 0; ud.levels.push_back(bu); struct UnitLevel ul; ul.symbol = "kg"; ul.count = 1000; ul.round = 2; ud.levels.push_back(ul); units[UNIT_WEIGHT] = ud; } { // Setup default currency struct UnitDescription ud; ud.conversion = 1.0; ud.mix = false; struct UnitLevel bu; bu.symbol = "¤"; bu.count = 1; bu.round = 0; ud.levels.push_back(bu); units[UNIT_CURRENCY] = ud; } XML::Document doc("units.xml"); XmlNodePtr root = doc.rootNode(); if (!root || !xmlNameEqual(root, "units")) { logger->log1("Error loading unit definition file: units.xml"); return; } for_each_xml_child_node(node, root) { if (xmlNameEqual(node, "unit")) { struct UnitDescription ud; int level = 1; const std::string type = XML::getProperty(node, "type", ""); ud.conversion = XML::getProperty(node, "conversion", 1); ud.mix = XML::getProperty(node, "mix", "no") == "yes"; struct UnitLevel bu; bu.symbol = XML::getProperty(node, "base", "¤"); bu.count = 1; bu.round = XML::getProperty(node, "round", 2); ud.levels.push_back(bu); for_each_xml_child_node(uLevel, node) { if (xmlNameEqual(uLevel, "level")) { struct UnitLevel ul; ul.symbol = XML::getProperty(uLevel, "symbol", strprintf("¤%d", level)); ul.count = XML::getProperty(uLevel, "count", -1); ul.round = XML::getProperty(uLevel, "round", bu.round); if (ul.count > 0) { ud.levels.push_back(ul); level++; } else { logger->log("Error bad unit count: %d for %s in %s", ul.count, ul.symbol.c_str(), bu.symbol.c_str()); } } } // Add one more level for saftey struct UnitLevel ll; ll.symbol = ""; ll.count = INT_MAX; ll.round = 0; ud.levels.push_back(ll); if (type == "weight") units[UNIT_WEIGHT] = ud; else if (type == "currency") units[UNIT_CURRENCY] = ud; else logger->log("Error unknown unit type: %s", type.c_str()); } } } std::string formatUnit(int value, int type) { struct UnitDescription ud = units[type]; struct UnitLevel ul; // Shortcut for 0; do the same for values less than 0 (for now) if (value <= 0) { ul = ud.levels[0]; return strprintf("0%s", ul.symbol.c_str()); } else { double amount = ud.conversion * value; // If only the first level is needed, act like mix if false if (ud.mix && !ud.levels.empty() && ud.levels[1].count < amount) { std::string output; struct UnitLevel pl = ud.levels[0]; ul = ud.levels[1]; int levelAmount = static_cast<int>(amount); int nextAmount = 0; if (ul.count) levelAmount /= ul.count; amount -= levelAmount * ul.count; if (amount > 0) { output = strprintf("%.*f%s", pl.round, amount, pl.symbol.c_str()); } for (unsigned int i = 2; i < ud.levels.size(); i++) { pl = ul; ul = ud.levels[i]; if (ul.count) { nextAmount = levelAmount / ul.count; levelAmount %= ul.count; } if (levelAmount > 0) output = strprintf("%d%s", levelAmount, pl.symbol.c_str()) + output; if (!nextAmount) break; levelAmount = nextAmount; } return output; } else { for (unsigned int i = 0; i < ud.levels.size(); i++) { ul = ud.levels[i]; if (amount < ul.count && ul.count > 0) { ul = ud.levels[i - 1]; break; } if (ul.count) amount /= ul.count; } return strprintf("%.*f%s", ul.round, amount, ul.symbol.c_str()); } } } std::string Units::formatCurrency(int value) { return formatUnit(value, UNIT_CURRENCY); } std::string Units::formatWeight(int value) { return formatUnit(value, UNIT_WEIGHT); }