424 lines
12 KiB
C++
424 lines
12 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2007, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: icuzdump.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2007-04-02
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* created by: Yoshito Umaoka
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*
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* This tool write out timezone transitions for ICU timezone. This tool
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* is used as a part of tzdata update process to check if ICU timezone
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* code works as well as the corresponding Olson stock localtime/zdump.
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*/
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#include <cstdlib>
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#include <cstring>
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#include <fstream>
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#include <sstream>
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#include <iostream>
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#include "unicode/utypes.h"
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#include "unicode/ustring.h"
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#include "unicode/timezone.h"
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#include "unicode/simpletz.h"
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#include "unicode/smpdtfmt.h"
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#include "unicode/decimfmt.h"
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#include "unicode/gregocal.h"
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#include "unicode/ustream.h"
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#include "unicode/putil.h"
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#include "uoptions.h"
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using namespace std;
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class DumpFormatter {
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public:
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DumpFormatter() {
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UErrorCode status = U_ZERO_ERROR;
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stz = new SimpleTimeZone(0, "");
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sdf = new SimpleDateFormat((UnicodeString)"yyyy-MM-dd EEE HH:mm:ss", Locale::getEnglish(), status);
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DecimalFormatSymbols *symbols = new DecimalFormatSymbols(Locale::getEnglish(), status);
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decf = new DecimalFormat("00", symbols, status);
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}
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~DumpFormatter() {
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}
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UnicodeString& format(UDate time, int32_t offset, UBool isDst, UnicodeString& appendTo) {
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stz->setRawOffset(offset);
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sdf->setTimeZone(*stz);
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UnicodeString str = sdf->format(time, appendTo);
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if (offset < 0) {
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appendTo += "-";
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offset = -offset;
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} else {
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appendTo += "+";
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}
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int32_t hour, min, sec;
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offset /= 1000;
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sec = offset % 60;
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offset = (offset - sec) / 60;
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min = offset % 60;
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hour = offset / 60;
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decf->format(hour, appendTo);
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decf->format(min, appendTo);
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decf->format(sec, appendTo);
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appendTo += "[DST=";
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if (isDst) {
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appendTo += "1";
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} else {
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appendTo += "0";
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}
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appendTo += "]";
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return appendTo;
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}
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private:
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SimpleTimeZone* stz;
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SimpleDateFormat* sdf;
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DecimalFormat* decf;
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};
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class ICUZDump {
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public:
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ICUZDump() {
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formatter = new DumpFormatter();
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loyear = 1902;
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hiyear = 2050;
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tick = 1000;
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linesep = NULL;
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}
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~ICUZDump() {
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}
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void setLowYear(int32_t lo) {
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loyear = lo;
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}
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void setHighYear(int32_t hi) {
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hiyear = hi;
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}
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void setTick(int32_t t) {
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tick = t;
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}
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void setTimeZone(TimeZone* tz) {
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timezone = tz;
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}
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void setDumpFormatter(DumpFormatter* fmt) {
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formatter = fmt;
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}
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void setLineSeparator(const char* sep) {
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linesep = sep;
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}
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void dump(ostream& out) {
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UErrorCode status = U_ZERO_ERROR;
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UDate SEARCH_INCREMENT = 12 * 60 * 60 * 1000; // half day
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UDate t, cutlo, cuthi;
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int32_t rawOffset, dstOffset;
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UnicodeString str;
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getCutOverTimes(cutlo, cuthi);
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t = cutlo;
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timezone->getOffset(t, FALSE, rawOffset, dstOffset, status);
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while (t < cuthi) {
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int32_t newRawOffset, newDstOffset;
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UDate newt = t + SEARCH_INCREMENT;
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timezone->getOffset(newt, FALSE, newRawOffset, newDstOffset, status);
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UBool bSameOffset = (rawOffset + dstOffset) == (newRawOffset + newDstOffset);
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UBool bSameDst = ((dstOffset != 0) && (newDstOffset != 0)) || ((dstOffset == 0) && (newDstOffset == 0));
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if (!bSameOffset || !bSameDst) {
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// find the boundary
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UDate lot = t;
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UDate hit = newt;
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while (true) {
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int32_t diff = (int32_t)(hit - lot);
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if (diff <= tick) {
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break;
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}
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UDate medt = lot + ((diff / 2) / tick) * tick;
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int32_t medRawOffset, medDstOffset;
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timezone->getOffset(medt, FALSE, medRawOffset, medDstOffset, status);
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bSameOffset = (rawOffset + dstOffset) == (medRawOffset + medDstOffset);
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bSameDst = ((dstOffset != 0) && (medDstOffset != 0)) || ((dstOffset == 0) && (medDstOffset == 0));
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if (!bSameOffset || !bSameDst) {
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hit = medt;
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} else {
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lot = medt;
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}
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}
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// write out the boundary
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str.remove();
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formatter->format(lot, rawOffset + dstOffset, (dstOffset == 0 ? FALSE : TRUE), str);
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out << str << " > ";
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str.remove();
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formatter->format(hit, newRawOffset + newDstOffset, (newDstOffset == 0 ? FALSE : TRUE), str);
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out << str;
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if (linesep != NULL) {
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out << linesep;
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} else {
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out << endl;
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}
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rawOffset = newRawOffset;
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dstOffset = newDstOffset;
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}
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t = newt;
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}
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}
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private:
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void getCutOverTimes(UDate& lo, UDate& hi) {
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UErrorCode status = U_ZERO_ERROR;
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GregorianCalendar* gcal = new GregorianCalendar(timezone, Locale::getEnglish(), status);
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gcal->clear();
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gcal->set(loyear, 0, 1, 0, 0, 0);
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lo = gcal->getTime(status);
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gcal->set(hiyear, 0, 1, 0, 0, 0);
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hi = gcal->getTime(status);
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}
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void dumpZone(ostream& out, const char* linesep, UnicodeString tzid, int32_t low, int32_t high) {
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}
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TimeZone* timezone;
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int32_t loyear;
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int32_t hiyear;
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int32_t tick;
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DumpFormatter* formatter;
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const char* linesep;
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};
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class ZoneIterator {
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public:
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ZoneIterator(UBool bAll = FALSE) {
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if (bAll) {
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zenum = TimeZone::createEnumeration();
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}
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else {
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zenum = NULL;
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zids = NULL;
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idx = 0;
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numids = 1;
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}
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}
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ZoneIterator(const char** ids, int32_t num) {
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zenum = NULL;
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zids = ids;
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idx = 0;
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numids = num;
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}
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~ZoneIterator() {
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if (zenum != NULL) {
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delete zenum;
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}
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}
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TimeZone* next() {
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TimeZone* tz = NULL;
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if (zenum != NULL) {
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UErrorCode status = U_ZERO_ERROR;
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const UnicodeString* zid = zenum->snext(status);
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if (zid != NULL) {
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tz = TimeZone::createTimeZone(*zid);
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}
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}
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else {
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if (idx < numids) {
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if (zids != NULL) {
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tz = TimeZone::createTimeZone((const UnicodeString&)zids[idx]);
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}
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else {
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tz = TimeZone::createDefault();
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}
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idx++;
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}
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}
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return tz;
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}
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private:
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const char** zids;
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StringEnumeration* zenum;
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int32_t idx;
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int32_t numids;
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};
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enum {
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kOptHelpH = 0,
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kOptHelpQuestionMark,
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kOptAllZones,
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kOptCutover,
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kOptDestDir,
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kOptLineSep
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};
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static UOption options[]={
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UOPTION_HELP_H,
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UOPTION_HELP_QUESTION_MARK,
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UOPTION_DEF("allzones", 'a', UOPT_NO_ARG),
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UOPTION_DEF("cutover", 'c', UOPT_REQUIRES_ARG),
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UOPTION_DEF("destdir", 'd', UOPT_REQUIRES_ARG),
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UOPTION_DEF("linesep", 'l', UOPT_REQUIRES_ARG)
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};
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extern int
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main(int argc, char *argv[]) {
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int32_t low = 1902;
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int32_t high = 2038;
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UBool bAll = FALSE;
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const char *dir = NULL;
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const char *linesep = NULL;
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U_MAIN_INIT_ARGS(argc, argv);
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argc = u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
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if (argc < 0) {
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cerr << "Illegal command line argument(s)" << endl << endl;
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}
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if (argc < 0 || options[kOptHelpH].doesOccur || options[kOptHelpQuestionMark].doesOccur) {
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cerr
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<< "Usage: icuzdump [-options] [zoneid1 zoneid2 ...]" << endl
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<< endl
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<< "\tDump all offset transitions for the specified zones." << endl
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<< endl
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<< "Options:" << endl
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<< "\t-a : Dump all available zones." << endl
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<< "\t-d <dir> : When specified, write transitions in a file under" << endl
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<< "\t the directory for each zone." << endl
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<< "\t-l <sep> : New line code type used in file outputs. CR or LF (default)"
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<< "\t or CRLF." << endl
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<< "\t-c [<low_year>,]<high_year>" << endl
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<< "\t : When specified, dump transitions starting <low_year>" << endl
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<< "\t (inclusive) up to <high_year> (exclusive). The default" << endl
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<< "\t values are 1902(low) and 2038(high)." << endl;
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return argc < 0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
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}
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bAll = options[kOptAllZones].doesOccur;
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if (options[kOptDestDir].doesOccur) {
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dir = options[kOptDestDir].value;
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}
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if (options[kOptLineSep].doesOccur) {
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if (strcmp(options[kOptLineSep].value, "CR") == 0) {
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linesep = "\r";
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} else if (strcmp(options[kOptLineSep].value, "CRLF") == 0) {
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linesep = "\r\n";
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} else if (strcmp(options[kOptLineSep].value, "LF") == 0) {
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linesep = "\n";
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}
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}
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if (options[kOptCutover].doesOccur) {
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char* comma = (char*)strchr(options[kOptCutover].value, ',');
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if (comma == NULL) {
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high = atoi(options[kOptCutover].value);
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} else {
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*comma = 0;
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low = atoi(options[kOptCutover].value);
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high = atoi(comma + 1);
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}
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}
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ICUZDump dumper;
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dumper.setLowYear(low);
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dumper.setHighYear(high);
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if (dir != NULL && linesep != NULL) {
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// use the specified line separator only for file output
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dumper.setLineSeparator((const char*)linesep);
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}
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ZoneIterator* zit;
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if (bAll) {
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zit = new ZoneIterator(TRUE);
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} else {
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if (argc <= 1) {
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zit = new ZoneIterator();
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} else {
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zit = new ZoneIterator((const char**)&argv[1], argc - 1);
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}
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}
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UnicodeString id;
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if (dir != NULL) {
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// file output
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ostringstream path;
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ios::openmode mode = ios::out;
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if (linesep != NULL) {
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mode |= ios::binary;
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}
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for (;;) {
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TimeZone* tz = zit->next();
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if (tz == NULL) {
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break;
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}
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dumper.setTimeZone(tz);
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tz->getID(id);
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// target file path
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path.str("");
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path << dir << U_FILE_SEP_CHAR;
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id = id.findAndReplace("/", "-");
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path << id;
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ofstream* fout = new ofstream(path.str().c_str(), mode);
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if (fout->fail()) {
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cerr << "Cannot open file " << path << endl;
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delete fout;
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delete tz;
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break;
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}
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dumper.dump(*fout);
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fout->close();
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delete fout;
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delete tz;
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}
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} else {
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// stdout
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UBool bFirst = TRUE;
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for (;;) {
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TimeZone* tz = zit->next();
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if (tz == NULL) {
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break;
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}
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dumper.setTimeZone(tz);
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tz->getID(id);
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if (bFirst) {
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bFirst = FALSE;
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} else {
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cout << endl;
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}
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cout << "ZONE: " << id << endl;
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dumper.dump(cout);
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delete tz;
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}
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}
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delete zit;
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}
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