diff options
Diffstat (limited to 'intl/icu/source/tools/tzcode/icuzdump.cpp')
| -rw-r--r-- | intl/icu/source/tools/tzcode/icuzdump.cpp | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/intl/icu/source/tools/tzcode/icuzdump.cpp b/intl/icu/source/tools/tzcode/icuzdump.cpp new file mode 100644 index 0000000000..c82fc43373 --- /dev/null +++ b/intl/icu/source/tools/tzcode/icuzdump.cpp @@ -0,0 +1,426 @@ +// © 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 = nullptr; + } + + ~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 != nullptr) { + 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) { + UErrorCode status = U_ZERO_ERROR; + zenum = TimeZone::createEnumeration(status); + // TODO: Add error case handling later. + } + else { + zenum = nullptr; + zids = nullptr; + idx = 0; + numids = 1; + } + } + + ZoneIterator(const char** ids, int32_t num) { + zenum = nullptr; + zids = ids; + idx = 0; + numids = num; + } + + ~ZoneIterator() { + if (zenum != nullptr) { + delete zenum; + } + } + + TimeZone* next() { + TimeZone* tz = nullptr; + if (zenum != nullptr) { + UErrorCode status = U_ZERO_ERROR; + const UnicodeString* zid = zenum->snext(status); + if (zid != nullptr) { + tz = TimeZone::createTimeZone(*zid); + } + } + else { + if (idx < numids) { + if (zids != nullptr) { + 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 = nullptr; + const char *linesep = nullptr; + + 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 == nullptr) { + 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 != nullptr && linesep != nullptr) { + // 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 != nullptr) { + // file output + ostringstream path; + ios::openmode mode = ios::out; + if (linesep != nullptr) { + mode |= ios::binary; + } + for (;;) { + TimeZone* tz = zit->next(); + if (tz == nullptr) { + 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 == nullptr) { + 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; +} |