-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.utils.format;\r
-\r
-import java.math.BigDecimal;\r
-import java.math.MathContext;\r
-import java.text.DecimalFormat;\r
-import java.text.DecimalFormatSymbols;\r
-import java.text.FieldPosition;\r
-import java.text.Format;\r
-import java.text.NumberFormat;\r
-import java.text.ParsePosition;\r
-import java.util.Locale;\r
-\r
-/**\r
- * @author Antti Villberg\r
- */\r
-public class FormattingUtils {\r
-\r
- public static final FormattingUtil US = new FormattingUtil(5, 5, Locale.US);\r
- public static final FormattingUtil DEFAULT = US;\r
-\r
- public static String engineeringFormat(Object value) {\r
- return DEFAULT.engineeringFormat(value);\r
- }\r
-\r
- public static Format significantDigitFormat(int withSignificantDigits) {\r
- return significantDigitFormat(withSignificantDigits, false);\r
- }\r
-\r
- public static Format significantDigitFormat(int withSignificantDigits, boolean stripTrailingZeros) {\r
- if (withSignificantDigits < 1)\r
- throw new IllegalArgumentException("withSignificantDigits must be > 0, got " + withSignificantDigits);\r
- StringBuilder sb = new StringBuilder(withSignificantDigits + 3);\r
- sb.append("0.");\r
- for (int i = 0; i < withSignificantDigits-1; i++)\r
- sb.append("#");\r
- sb.append("E0");\r
- NumberFormat low = new DecimalFormat(sb.toString());\r
- low.setGroupingUsed(false);\r
- NumberFormat hi = new SignificantDigitFormat(withSignificantDigits, stripTrailingZeros);\r
- Format format = new SwitchFormat(0.1, 1, low, hi, hi);\r
- return format;\r
- }\r
-\r
- private static class SignificantDigitFormat extends NumberFormat {\r
-\r
- private static final long serialVersionUID = 1079268918077141671L;\r
-\r
- private MathContext mc;\r
- private boolean stripTrailingZeros;\r
- private boolean fixDecimalSeparator;\r
- private char decimalSeparator;\r
-\r
- public SignificantDigitFormat(int digits, boolean stripTrailingZeros) {\r
- this.mc = new MathContext(digits);\r
- this.stripTrailingZeros = stripTrailingZeros;\r
- DecimalFormatSymbols symbols = DecimalFormatSymbols.getInstance();\r
- decimalSeparator = symbols.getDecimalSeparator();\r
- // BigDecimal always formats doubles with '.' as decimal separator.\r
- if (decimalSeparator != '.')\r
- fixDecimalSeparator = true;\r
- else\r
- fixDecimalSeparator = false;\r
- }\r
-\r
- @Override\r
- public StringBuffer format(double number, StringBuffer toAppendTo, FieldPosition pos) {\r
- BigDecimal big = new BigDecimal(number, mc);\r
- if (stripTrailingZeros)\r
- big = big.stripTrailingZeros();\r
- String str = big.toString();\r
- if (fixDecimalSeparator)\r
- str = str.replace('.', decimalSeparator);\r
- return toAppendTo.append(str);\r
- }\r
-\r
- @Override\r
- public StringBuffer format(long number, StringBuffer toAppendTo, FieldPosition pos) {\r
- return toAppendTo.append(number);\r
- }\r
-\r
- @Override\r
- public Number parse(String source, ParsePosition parsePosition) {\r
- return 0;\r
- }\r
-\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.format;
+
+import java.math.BigDecimal;
+import java.math.MathContext;
+import java.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
+import java.text.FieldPosition;
+import java.text.Format;
+import java.text.NumberFormat;
+import java.text.ParsePosition;
+import java.util.Locale;
+
+/**
+ * @author Antti Villberg
+ */
+public class FormattingUtils {
+
+ public static final FormattingUtil US = new FormattingUtil(5, 5, Locale.US);
+ public static final FormattingUtil DEFAULT = US;
+
+ public static String engineeringFormat(Object value) {
+ return DEFAULT.engineeringFormat(value);
+ }
+
+ public static Format significantDigitFormat(int withSignificantDigits) {
+ return significantDigitFormat(withSignificantDigits, false);
+ }
+
+ public static Format significantDigitFormat(int withSignificantDigits, boolean stripTrailingZeros) {
+ if (withSignificantDigits < 1)
+ throw new IllegalArgumentException("withSignificantDigits must be > 0, got " + withSignificantDigits);
+ StringBuilder sb = new StringBuilder(withSignificantDigits + 3);
+ sb.append("0.");
+ for (int i = 0; i < withSignificantDigits-1; i++)
+ sb.append("#");
+ sb.append("E0");
+ NumberFormat low = new DecimalFormat(sb.toString());
+ low.setGroupingUsed(false);
+ NumberFormat hi = new SignificantDigitFormat(withSignificantDigits, stripTrailingZeros);
+ Format format = new SwitchFormat(0.1, 1, low, hi, hi);
+ return format;
+ }
+
+ private static class SignificantDigitFormat extends NumberFormat {
+
+ private static final long serialVersionUID = 1079268918077141671L;
+
+ private MathContext mc;
+ private boolean stripTrailingZeros;
+ private boolean fixDecimalSeparator;
+ private char decimalSeparator;
+
+ public SignificantDigitFormat(int digits, boolean stripTrailingZeros) {
+ this.mc = new MathContext(digits);
+ this.stripTrailingZeros = stripTrailingZeros;
+ DecimalFormatSymbols symbols = DecimalFormatSymbols.getInstance();
+ decimalSeparator = symbols.getDecimalSeparator();
+ // BigDecimal always formats doubles with '.' as decimal separator.
+ if (decimalSeparator != '.')
+ fixDecimalSeparator = true;
+ else
+ fixDecimalSeparator = false;
+ }
+
+ @Override
+ public StringBuffer format(double number, StringBuffer toAppendTo, FieldPosition pos) {
+ BigDecimal big = new BigDecimal(number, mc);
+ if (stripTrailingZeros)
+ big = big.stripTrailingZeros();
+ String str = big.toString();
+ if (fixDecimalSeparator)
+ str = str.replace('.', decimalSeparator);
+ return toAppendTo.append(str);
+ }
+
+ @Override
+ public StringBuffer format(long number, StringBuffer toAppendTo, FieldPosition pos) {
+ return toAppendTo.append(number);
+ }
+
+ @Override
+ public Number parse(String source, ParsePosition parsePosition) {
+ return 0;
+ }
+
+ }
+
+}
Code Review / simantics / platform.git / blobdiff