/*
*******************************************************************************
* Copyright (C) 1996-2008, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*
*/
package com.ibm.icu.dev.tool.timescale;
import com.ibm.icu.text.MessageFormat;
import com.ibm.icu.util.UniversalTimeScale;
/**
* This class prints out the initializers needed to initialize
* the time scale data in the C version of <code>UniversalTimeScale</code>.
*
* It just calls <code>getTimeScaleValue()</code> for all fields and prints
* the initializers. Because some C compilers can't compile a literal constant for
* the minimum and / or maximum values of an <code>int64_t</code>, this code will
* print <code>U_INT64_MIN</code> or <code>U_INT64_MAX</code> for these values.
*
* @see com.ibm.icu.util.UniversalTimeScale
*/
public class GenerateCTimeScaleData
{
/**
* The default constructor.
*/
public GenerateCTimeScaleData()
{
}
private static final long ticks = 1;
private static final long microseconds = ticks * 10;
private static final long milliseconds = microseconds * 1000;
private static final long seconds = milliseconds * 1000;
private static final long minutes = seconds * 60;
private static final long hours = minutes * 60;
private static final long days = hours * 24;
/*
* Returns <code>String</code> that is a literal representation of the given value.
* This will either be a call to the <code>INT64_C()</code> macro, or the constant
* <code>U_INT64_MIN</code> or <U_INT64_MAX>.
*/
private static String minMaxFilter(long value)
{
if (value == Long.MIN_VALUE) {
return "U_INT64_MIN";
} else if (value == Long.MAX_VALUE) {
return "U_INT64_MAX";
}
return "INT64_C(" + Long.toString(value) + ")";
}
/**
* This method prints the C initializers for the time scale data.
*
* @param args - the command line arguments
*
* @see com.ibm.icu.util.UniversalTimeScale
*/
public static void main(String[] args)
{
MessageFormat fmt = new MessageFormat("'{'{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10}},");
Object cargs[] = {null, null, null, null, null, null, null, null, null, null, null};
System.out.println("\nC data:");
for (int scale = 0; scale < UniversalTimeScale.MAX_SCALE; scale += 1) {
long units = UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.UNITS_VALUE);
if (units == ticks) {
cargs[0] = "ticks";
} else if (units == microseconds) {
cargs[0] = "microseconds";
} else if (units == milliseconds) {
cargs[0] = "milliseconds";
} else if (units == seconds) {
cargs[0] = "seconds";
} else if (units == minutes) {
cargs[0] = "minutes";
} else if (units == hours) {
cargs[0] = "hours";
} else if (units == days) {
cargs[0] = "days";
} else {
cargs[0] = "INT64_C(" + Long.toString(units) + ")";
}
cargs[1] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.EPOCH_OFFSET_VALUE));
cargs[2] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.FROM_MIN_VALUE));
cargs[3] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.FROM_MAX_VALUE));
cargs[4] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.TO_MIN_VALUE));
cargs[5] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.TO_MAX_VALUE));
cargs[6] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.EPOCH_OFFSET_PLUS_1_VALUE));
cargs[7] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.EPOCH_OFFSET_MINUS_1_VALUE));
cargs[8] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.UNITS_ROUND_VALUE));
cargs[9] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.MIN_ROUND_VALUE));
cargs[10] = minMaxFilter(UniversalTimeScale.getTimeScaleValue(scale, UniversalTimeScale.MAX_ROUND_VALUE));
System.out.println(fmt.format(cargs));
}
}
}