Initial Commit - Copy from Altus Metrum AltOS

altoslib/AltosUnits.java

@@ -0,0 +1,222 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altoslib_14;
+
+import java.text.*;
+
+public abstract class AltosUnits {
+
+	AltosUnitsRange[]	range_metric, range_imperial;
+
+	private AltosUnitsRange range(double v, boolean imperial_units) {
+		AltosUnitsRange[]	ranges = imperial_units ? range_imperial : range_metric;
+
+		for (int i = ranges.length - 1; i > 0; i--)
+			if (v >= ranges[i].lower_limit)
+				return ranges[i];
+		return ranges[0];
+	}
+
+	private AltosUnitsRange first_range(boolean imperial_units) {
+		return imperial_units ? range_imperial[0] : range_metric[0];
+	}
+
+	public abstract double value(double v, boolean imperial_units);
+
+	public abstract double inverse(double v, boolean imperial_units);
+
+	public String string_value(double v, boolean imperial_units) {
+		return Double.valueOf(value(v, imperial_units)).toString();
+	}
+
+	public abstract String show_units(boolean imperial_units);
+
+	public abstract String say_units(boolean imperial_units);
+
+	public abstract int show_fraction(int width, boolean imperial_units);
+
+	private double value(double v) {
+		return value(v, AltosConvert.imperial_units);
+	}
+
+	private double inverse(double v) {
+		return inverse(v, AltosConvert.imperial_units);
+	}
+
+	private String show_units() {
+		return show_units(AltosConvert.imperial_units);
+	}
+
+	private String say_units() {
+		return say_units(AltosConvert.imperial_units);
+	}
+
+	private int show_fraction(int width) {
+		return show_fraction(width, AltosConvert.imperial_units);
+	}
+
+	private int say_fraction(boolean imperial_units) {
+		return 0;
+	}
+
+	private String show_format(AltosUnitsRange range, int width) {
+		return String.format("%%%d.%df %s", width, range.show_fraction(width), range.show_units);
+	}
+
+	private String say_format(AltosUnitsRange range) {
+		return String.format("%%1.%df", range.say_fraction());
+	}
+
+	private String say_units_format(AltosUnitsRange range)  {
+		return String.format("%%1.%df %s", range.say_fraction(), range.say_units);
+	}
+
+	public String show(int width, double v, boolean imperial_units) {
+		AltosUnitsRange range = range(v, imperial_units);
+
+		return String.format(show_format(range, width), range.value(v));
+	}
+
+	public String say(double v, boolean imperial_units) {
+		AltosUnitsRange range = range(v, imperial_units);
+
+		return String.format(say_format(range), range.value(v));
+	}
+
+	public String say_units(double v, boolean imperial_units) {
+		AltosUnitsRange range = range(v, imperial_units);
+
+		return String.format(say_units_format(range), range.value(v));
+	}
+
+	public String show(int width, double v) {
+		return show(width, v, AltosConvert.imperial_units);
+	}
+
+	public String say(double v) {
+		return say(v, AltosConvert.imperial_units);
+	}
+
+	public String say_units(double v) {
+		return say_units(v, AltosConvert.imperial_units);
+	}
+
+	public String string_value(double v) {
+		return string_value(v, AltosConvert.imperial_units);
+	}
+
+	/* Parsing functions. Use the first range of the type */
+	public String parse_units(boolean imperial_units) {
+		return first_range(imperial_units).show_units;
+	}
+
+	public String parse_units() {
+		return parse_units(AltosConvert.imperial_units);
+	}
+
+	public double parse_value(double v, boolean imperial_units) {
+		return first_range(imperial_units).value(v);
+	}
+
+	public double parse_value(double v) {
+		return parse_value(v, AltosConvert.imperial_units);
+	}
+
+	/* Graphing functions. Use the first range of the type */
+	public String graph_units(boolean imperial_units) {
+		return first_range(imperial_units).show_units;
+	}
+
+	public String graph_units() {
+		return graph_units(AltosConvert.imperial_units);
+	}
+
+	public double graph_value(double v, boolean imperial_units) {
+		return first_range(imperial_units).value(v);
+	}
+
+	public double graph_value(double v) {
+		return graph_value(v, AltosConvert.imperial_units);
+	}
+
+	private String graph_format(AltosUnitsRange range, int width) {
+		return String.format(String.format("%%%d.%df", width, range.show_fraction(width)), 0.0);
+	}
+
+	public String graph_format(int width, boolean imperial_units) {
+		return graph_format(first_range(imperial_units), width);
+	}
+
+	public String graph_format(int width) {
+		return graph_format(width, AltosConvert.imperial_units);
+	}
+
+	/* Parsing functions. */
+	public double parse_locale(String s, boolean imperial_units) throws ParseException {
+		double v = AltosParse.parse_double_locale(s);
+		return inverse(v, imperial_units);
+	}
+
+	public double parse_net(String s, boolean imperial_units) throws ParseException {
+		double v = AltosParse.parse_double_net(s);
+		return inverse(v, imperial_units);
+	}
+
+	public double parse_locale(String s) throws ParseException {
+		return parse_locale(s, AltosConvert.imperial_units);
+	}
+
+	public double parse_net(String s) throws ParseException {
+		return parse_net(s, AltosConvert.imperial_units);
+	}
+
+	public AltosUnits() {
+		range_metric = new AltosUnitsRange[1];
+
+		range_metric[0] = new AltosUnitsRange(this, false) {
+				double value(double v) {
+					return units.value(v, false);
+				}
+
+				int show_fraction(int width) {
+					return units.show_fraction(width, false);
+				}
+
+				int say_fraction() {
+					return units.say_fraction(false);
+				}
+			};
+
+		range_imperial = new AltosUnitsRange[1];
+
+		range_imperial[0] = new AltosUnitsRange(this, true) {
+				double value(double v) {
+					return units.value(v, true);
+				}
+
+				int show_fraction(int width) {
+					return units.show_fraction(width, true);
+				}
+
+				int say_fraction() {
+					return units.say_fraction(true);
+				}
+			};
+	}
+}