120 lines
4.2 KiB
Java
120 lines
4.2 KiB
Java
package com.bytezone.diskbrowser.visicalc;
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// -----------------------------------------------------------------------------------//
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class Format
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// -----------------------------------------------------------------------------------//
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{
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private static final String OVERFLOW = ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
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private static final String HISTOGRAM = "***********************************";
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private static final String UNKNOWN = "???????????????????????????????????";
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// ---------------------------------------------------------------------------------//
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private Format ()
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// ---------------------------------------------------------------------------------//
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{
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}
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// ---------------------------------------------------------------------------------//
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static String format (Value value, char formatChar, int colWidth)
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// ---------------------------------------------------------------------------------//
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{
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double actualValue = value.getDouble ();
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if (actualValue == -0.0)
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actualValue = 0;
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String valueText = String.valueOf ((int) actualValue);
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if (valueText.startsWith ("0"))
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valueText = valueText.substring (1);
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int digits = valueText.length ();
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if (digits > colWidth)
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return OVERFLOW.substring (0, colWidth);
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switch (formatChar)
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{
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case 'L':
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case 'R':
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case 'G':
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case ' ':
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int precision = colWidth - (digits + 1);
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if (digits == 0)
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precision = colWidth - 1;
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if (precision < 0)
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precision = 0;
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String numberFormat = String.format ("%%%d.%df", colWidth, precision);
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String val = String.format (numberFormat, actualValue);
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// System.out.printf ("%s %2d %2d %s %15.8f %s : ", formatChar, colWidth,
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// digits, numberFormat, actualValue, val);
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val = val.trim ();
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if (val.indexOf ('.') >= 0)
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while (val.endsWith ("0"))
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val = val.substring (0, val.length () - 1);
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if (val.endsWith ("."))
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val = val.substring (0, val.length () - 1);
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if (val.startsWith ("0."))
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val = val.substring (1);
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if (val.startsWith ("-0."))
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val = "-" + val.substring (2);
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if (val.length () > colWidth && val.indexOf ('.') >= 0)
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val = val.substring (0, colWidth);
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if (formatChar == 'L')
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{
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String leftFormat = String.format ("%%-%ds", colWidth);
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val = String.format (leftFormat, val);
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}
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else
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{
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String rightFormat = String.format ("%%%ds", colWidth);
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val = String.format (rightFormat, val);
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}
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if (val.length () > colWidth)
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return OVERFLOW.substring (0, colWidth);
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return val;
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case 'I':
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String integerFormat = String.format ("%%%d.0f", colWidth);
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String result = String.format (integerFormat, actualValue);
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if (result.length () > colWidth)
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return OVERFLOW.substring (0, colWidth);
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return result;
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case '$':
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String currencyFormat = String.format ("%%%d.2f", colWidth + 3);
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result = String.format (currencyFormat, actualValue).trim ();
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String rightFormat = String.format ("%%%ds", colWidth);
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val = String.format (rightFormat, result);
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if (result.length () > colWidth)
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return OVERFLOW.substring (0, colWidth);
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return val;
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case '*':
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String graphFormat = String.format ("%%-%d.%ds", colWidth, colWidth);
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return String.format (graphFormat, HISTOGRAM.substring (0, (int) actualValue));
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default:
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System.out.printf ("[%s]%n", formatChar);
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return UNKNOWN.substring (0, colWidth);
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}
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}
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// ---------------------------------------------------------------------------------//
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static String justify (String text, int colWidth, char format)
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// ---------------------------------------------------------------------------------//
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{
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// right justify
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if (format == 'R' || format == '$' || format == 'I')
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{
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String labelFormat = String.format ("%%%d.%ds", colWidth, colWidth);
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return (String.format (labelFormat, text));
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}
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// left justify
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String labelFormat = String.format ("%%-%d.%ds", colWidth, colWidth);
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return (String.format (labelFormat, text));
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}
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} |