1 files changed, 57 insertions, 0 deletions
diff --git a/altoslib/AltosUnits.java b/altoslib/AltosUnits.java
new file mode 100644
index 00000000..47540c61
--- /dev/null
+++ b/altoslib/AltosUnits.java
@@ -0,0 +1,57 @@
+/*
+ * 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; version 2 of the License.
+ *
+ * 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;
+
+public abstract class AltosUnits {
+
+	public abstract double value(double v);
+
+	public abstract String show_units();
+
+	public abstract String say_units();
+
+	abstract int show_fraction(int width);
+
+	int say_fraction() {
+		return 0;
+	}
+
+	private String show_format(int width) {
+		return String.format("%%%d.%df %s", width, show_fraction(width), show_units());
+	}
+
+	private String say_format() {
+		return String.format("%%1.%df", say_fraction());
+	}
+
+	private String say_units_format() {
+		return String.format("%%1.%df %s", say_fraction(), say_units());
+	}
+
+	public String show(int width, double v) {
+		return String.format(show_format(width), value(v));
+	}
+
+	public String say(double v) {
+		return String.format(say_format(), value(v));
+	}
+
+	public String say_units(double v) {
+		return String.format(say_units_format(), value(v));
+	}
+}
+\ No newline at end of file