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-rw-r--r--src/units.cpp248
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diff --git a/src/units.cpp b/src/units.cpp
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+++ b/src/units.cpp
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+/*
+ * Support for custom units
+ * Copyright (C) 2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ *
+ * This file is part of The Mana 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 "log.h"
+
+#include "utils/stringutils.h"
+#include "utils/xml.h"
+
+#include <cmath>
+#include <climits>
+#include <vector>
+
+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 || !xmlStrEqual(root->name, BAD_CAST "units"))
+ {
+ logger->log1("Error loading unit definition file: units.xml");
+ return;
+ }
+
+ for_each_xml_child_node(node, root)
+ {
+ if (xmlStrEqual(node->name, BAD_CAST "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 (xmlStrEqual(uLevel->name, BAD_CAST "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.size() > 0 && ud.levels[1].count < amount)
+ {
+ std::string output;
+ struct UnitLevel pl = ud.levels[0];
+ ul = ud.levels[1];
+ int levelAmount = (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);
+}