// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 2007-2016, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: icuzdump.cpp
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2007-04-02
* created by: Yoshito Umaoka
*
* This tool write out timezone transitions for ICU timezone. This tool
* is used as a part of tzdata update process to check if ICU timezone
* code works as well as the corresponding Olson stock localtime/zdump.
*/
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <sstream>
#include <iostream>
#include "unicode/utypes.h"
#include "unicode/ustring.h"
#include "unicode/timezone.h"
#include "unicode/simpletz.h"
#include "unicode/smpdtfmt.h"
#include "unicode/decimfmt.h"
#include "unicode/gregocal.h"
#include "unicode/ustream.h"
#include "unicode/putil.h"
#include "cmemory.h"
#include "uoptions.h"
using namespace std;
using namespace icu;
class DumpFormatter {
public:
DumpFormatter() {
UErrorCode status = U_ZERO_ERROR;
stz = new SimpleTimeZone(0, "");
sdf = new SimpleDateFormat((UnicodeString)"yyyy-MM-dd EEE HH:mm:ss", Locale::getEnglish(), status);
DecimalFormatSymbols *symbols = new DecimalFormatSymbols(Locale::getEnglish(), status);
decf = new DecimalFormat("00", symbols, status);
}
~DumpFormatter() {
}
UnicodeString& format(UDate time, int32_t offset, UBool isDst, UnicodeString& appendTo) {
stz->setRawOffset(offset);
sdf->setTimeZone(*stz);
UnicodeString str = sdf->format(time, appendTo);
if (offset < 0) {
appendTo += "-";
offset = -offset;
} else {
appendTo += "+";
}
int32_t hour, min, sec;
offset /= 1000;
sec = offset % 60;
offset = (offset - sec) / 60;
min = offset % 60;
hour = offset / 60;
decf->format(hour, appendTo);
decf->format(min, appendTo);
decf->format(sec, appendTo);
appendTo += "[DST=";
if (isDst) {
appendTo += "1";
} else {
appendTo += "0";
}
appendTo += "]";
return appendTo;
}
private:
SimpleTimeZone* stz;
SimpleDateFormat* sdf;
DecimalFormat* decf;
};
class ICUZDump {
public:
ICUZDump() {
formatter = new DumpFormatter();
loyear = 1902;
hiyear = 2050;
tick = 1000;
linesep = NULL;
}
~ICUZDump() {
}
void setLowYear(int32_t lo) {
loyear = lo;
}
void setHighYear(int32_t hi) {
hiyear = hi;
}
void setTick(int32_t t) {
tick = t;
}
void setTimeZone(TimeZone* tz) {
timezone = tz;
}
void setDumpFormatter(DumpFormatter* fmt) {
formatter = fmt;
}
void setLineSeparator(const char* sep) {
linesep = sep;
}
void dump(ostream& out) {
UErrorCode status = U_ZERO_ERROR;
UDate SEARCH_INCREMENT = 12 * 60 * 60 * 1000; // half day
UDate t, cutlo, cuthi;
int32_t rawOffset, dstOffset;
UnicodeString str;
getCutOverTimes(cutlo, cuthi);
t = cutlo;
timezone->getOffset(t, FALSE, rawOffset, dstOffset, status);
while (t < cuthi) {
int32_t newRawOffset, newDstOffset;
UDate newt = t + SEARCH_INCREMENT;
timezone->getOffset(newt, FALSE, newRawOffset, newDstOffset, status);
UBool bSameOffset = (rawOffset + dstOffset) == (newRawOffset + newDstOffset);
UBool bSameDst = ((dstOffset != 0) && (newDstOffset != 0)) || ((dstOffset == 0) && (newDstOffset == 0));
if (!bSameOffset || !bSameDst) {
// find the boundary
UDate lot = t;
UDate hit = newt;
while (true) {
int32_t diff = (int32_t)(hit - lot);
if (diff <= tick) {
break;
}
UDate medt = lot + ((diff / 2) / tick) * tick;
int32_t medRawOffset, medDstOffset;
timezone->getOffset(medt, FALSE, medRawOffset, medDstOffset, status);
bSameOffset = (rawOffset + dstOffset) == (medRawOffset + medDstOffset);
bSameDst = ((dstOffset != 0) && (medDstOffset != 0)) || ((dstOffset == 0) && (medDstOffset == 0));
if (!bSameOffset || !bSameDst) {
hit = medt;
} else {
lot = medt;
}
}
// write out the boundary
str.remove();
formatter->format(lot, rawOffset + dstOffset, (dstOffset == 0 ? FALSE : TRUE), str);
out << str << " > ";
str.remove();
formatter->format(hit, newRawOffset + newDstOffset, (newDstOffset == 0 ? FALSE : TRUE), str);
out << str;
if (linesep != NULL) {
out << linesep;
} else {
out << endl;
}
rawOffset = newRawOffset;
dstOffset = newDstOffset;
}
t = newt;
}
}
private:
void getCutOverTimes(UDate& lo, UDate& hi) {
UErrorCode status = U_ZERO_ERROR;
GregorianCalendar* gcal = new GregorianCalendar(timezone, Locale::getEnglish(), status);
gcal->clear();
gcal->set(loyear, 0, 1, 0, 0, 0);
lo = gcal->getTime(status);
gcal->set(hiyear, 0, 1, 0, 0, 0);
hi = gcal->getTime(status);
}
TimeZone* timezone;
int32_t loyear;
int32_t hiyear;
int32_t tick;
DumpFormatter* formatter;
const char* linesep;
};
class ZoneIterator {
public:
ZoneIterator(UBool bAll = FALSE) {
if (bAll) {
zenum = TimeZone::createEnumeration();
}
else {
zenum = NULL;
zids = NULL;
idx = 0;
numids = 1;
}
}
ZoneIterator(const char** ids, int32_t num) {
zenum = NULL;
zids = ids;
idx = 0;
numids = num;
}
~ZoneIterator() {
if (zenum != NULL) {
delete zenum;
}
}
TimeZone* next() {
TimeZone* tz = NULL;
if (zenum != NULL) {
UErrorCode status = U_ZERO_ERROR;
const UnicodeString* zid = zenum->snext(status);
if (zid != NULL) {
tz = TimeZone::createTimeZone(*zid);
}
}
else {
if (idx < numids) {
if (zids != NULL) {
tz = TimeZone::createTimeZone((const UnicodeString&)zids[idx]);
}
else {
tz = TimeZone::createDefault();
}
idx++;
}
}
return tz;
}
private:
const char** zids;
StringEnumeration* zenum;
int32_t idx;
int32_t numids;
};
enum {
kOptHelpH = 0,
kOptHelpQuestionMark,
kOptAllZones,
kOptCutover,
kOptDestDir,
kOptLineSep
};
static UOption options[]={
UOPTION_HELP_H,
UOPTION_HELP_QUESTION_MARK,
UOPTION_DEF("allzones", 'a', UOPT_NO_ARG),
UOPTION_DEF("cutover", 'c', UOPT_REQUIRES_ARG),
UOPTION_DEF("destdir", 'd', UOPT_REQUIRES_ARG),
UOPTION_DEF("linesep", 'l', UOPT_REQUIRES_ARG)
};
extern int
main(int argc, char *argv[]) {
int32_t low = 1902;
int32_t high = 2038;
UBool bAll = FALSE;
const char *dir = NULL;
const char *linesep = NULL;
U_MAIN_INIT_ARGS(argc, argv);
argc = u_parseArgs(argc, argv, UPRV_LENGTHOF(options), options);
if (argc < 0) {
cerr << "Illegal command line argument(s)" << endl << endl;
}
if (argc < 0 || options[kOptHelpH].doesOccur || options[kOptHelpQuestionMark].doesOccur) {
cerr
<< "Usage: icuzdump [-options] [zoneid1 zoneid2 ...]" << endl
<< endl
<< "\tDump all offset transitions for the specified zones." << endl
<< endl
<< "Options:" << endl
<< "\t-a : Dump all available zones." << endl
<< "\t-d <dir> : When specified, write transitions in a file under" << endl
<< "\t the directory for each zone." << endl
<< "\t-l <sep> : New line code type used in file outputs. CR or LF (default)"
<< "\t or CRLF." << endl
<< "\t-c [<low_year>,]<high_year>" << endl
<< "\t : When specified, dump transitions starting <low_year>" << endl
<< "\t (inclusive) up to <high_year> (exclusive). The default" << endl
<< "\t values are 1902(low) and 2038(high)." << endl;
return argc < 0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
}
bAll = options[kOptAllZones].doesOccur;
if (options[kOptDestDir].doesOccur) {
dir = options[kOptDestDir].value;
}
if (options[kOptLineSep].doesOccur) {
if (strcmp(options[kOptLineSep].value, "CR") == 0) {
linesep = "\r";
} else if (strcmp(options[kOptLineSep].value, "CRLF") == 0) {
linesep = "\r\n";
} else if (strcmp(options[kOptLineSep].value, "LF") == 0) {
linesep = "\n";
}
}
if (options[kOptCutover].doesOccur) {
char* comma = (char*)strchr(options[kOptCutover].value, ',');
if (comma == NULL) {
high = atoi(options[kOptCutover].value);
} else {
*comma = 0;
low = atoi(options[kOptCutover].value);
high = atoi(comma + 1);
}
}
ICUZDump dumper;
dumper.setLowYear(low);
dumper.setHighYear(high);
if (dir != NULL && linesep != NULL) {
// use the specified line separator only for file output
dumper.setLineSeparator((const char*)linesep);
}
ZoneIterator* zit;
if (bAll) {
zit = new ZoneIterator(TRUE);
} else {
if (argc <= 1) {
zit = new ZoneIterator();
} else {
zit = new ZoneIterator((const char**)&argv[1], argc - 1);
}
}
UnicodeString id;
if (dir != NULL) {
// file output
ostringstream path;
ios::openmode mode = ios::out;
if (linesep != NULL) {
mode |= ios::binary;
}
for (;;) {
TimeZone* tz = zit->next();
if (tz == NULL) {
break;
}
dumper.setTimeZone(tz);
tz->getID(id);
// target file path
path.str("");
path << dir << U_FILE_SEP_CHAR;
id = id.findAndReplace("/", "-");
path << id;
ofstream* fout = new ofstream(path.str().c_str(), mode);
if (fout->fail()) {
cerr << "Cannot open file " << path.str() << endl;
delete fout;
delete tz;
break;
}
dumper.dump(*fout);
fout->close();
delete fout;
delete tz;
}
} else {
// stdout
UBool bFirst = TRUE;
for (;;) {
TimeZone* tz = zit->next();
if (tz == NULL) {
break;
}
dumper.setTimeZone(tz);
tz->getID(id);
if (bFirst) {
bFirst = FALSE;
} else {
cout << endl;
}
cout << "ZONE: " << id << endl;
dumper.dump(cout);
delete tz;
}
}
delete zit;
}