| |
| /* |
| ********************************************************************** |
| * Copyright (c) 2003-2008, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| * Author: Alan Liu |
| * Created: July 10 2003 |
| * Since: ICU 2.8 |
| ********************************************************************** |
| */ |
| #include "tzfile.h" // from Olson tzcode archive, copied to this dir |
| |
| #ifdef WIN32 |
| |
| #include <windows.h> |
| #undef min // windows.h/STL conflict |
| #undef max // windows.h/STL conflict |
| // "identifier was truncated to 'number' characters" warning |
| #pragma warning(disable: 4786) |
| |
| #else |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <dirent.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| |
| #endif |
| |
| #include <algorithm> |
| #include <cassert> |
| #include <ctime> |
| #include <fstream> |
| #include <iomanip> |
| #include <iostream> |
| #include <iterator> |
| #include <limits> |
| #include <map> |
| #include <set> |
| #include <sstream> |
| #include <sstream> |
| #include <stdexcept> |
| #include <string> |
| #include <vector> |
| |
| #include "tz2icu.h" |
| #include "unicode/uversion.h" |
| |
| #define USE64BITDATA |
| |
| using namespace std; |
| |
| //-------------------------------------------------------------------- |
| // Time utilities |
| //-------------------------------------------------------------------- |
| |
| const int64_t SECS_PER_YEAR = 31536000; // 365 days |
| const int64_t SECS_PER_LEAP_YEAR = 31622400; // 366 days |
| const int64_t LOWEST_TIME32 = (int64_t)((int32_t)0x80000000); |
| const int64_t HIGHEST_TIME32 = (int64_t)((int32_t)0x7fffffff); |
| |
| bool isLeap(int32_t y) { |
| return (y%4 == 0) && ((y%100 != 0) || (y%400 == 0)); // Gregorian |
| } |
| |
| int64_t secsPerYear(int32_t y) { |
| return isLeap(y) ? SECS_PER_LEAP_YEAR : SECS_PER_YEAR; |
| } |
| |
| /** |
| * Given a calendar year, return the GMT epoch seconds for midnight |
| * GMT of January 1 of that year. yearToSeconds(1970) == 0. |
| */ |
| int64_t yearToSeconds(int32_t year) { |
| // inefficient but foolproof |
| int64_t s = 0; |
| int32_t y = 1970; |
| while (y < year) { |
| s += secsPerYear(y++); |
| } |
| while (y > year) { |
| s -= secsPerYear(--y); |
| } |
| return s; |
| } |
| |
| /** |
| * Given 1970 GMT epoch seconds, return the calendar year containing |
| * that time. secondsToYear(0) == 1970. |
| */ |
| int32_t secondsToYear(int64_t seconds) { |
| // inefficient but foolproof |
| int32_t y = 1970; |
| int64_t s = 0; |
| if (seconds >= 0) { |
| for (;;) { |
| s += secsPerYear(y++); |
| if (s > seconds) break; |
| } |
| --y; |
| } else { |
| for (;;) { |
| s -= secsPerYear(--y); |
| if (s <= seconds) break; |
| } |
| } |
| return y; |
| } |
| |
| //-------------------------------------------------------------------- |
| // Types |
| //-------------------------------------------------------------------- |
| |
| struct FinalZone; |
| struct FinalRule; |
| struct SimplifiedZoneType; |
| |
| // A transition from one ZoneType to another |
| // Minimal size = 5 bytes (4+1) |
| struct Transition { |
| int64_t time; // seconds, 1970 epoch |
| int32_t type; // index into 'ZoneInfo.types' 0..255 |
| Transition(int64_t _time, int32_t _type) { |
| time = _time; |
| type = _type; |
| } |
| }; |
| |
| // A behavior mode (what zic calls a 'type') of a time zone. |
| // Minimal size = 6 bytes (4+1+3bits) |
| // SEE: SimplifiedZoneType |
| struct ZoneType { |
| int64_t rawoffset; // raw seconds offset from GMT |
| int64_t dstoffset; // dst seconds offset from GMT |
| |
| // We don't really need any of the following, but they are |
| // retained for possible future use. See SimplifiedZoneType. |
| int32_t abbr; // index into ZoneInfo.abbrs 0..n-1 |
| bool isdst; |
| bool isstd; |
| bool isgmt; |
| |
| ZoneType(const SimplifiedZoneType&); // used by optimizeTypeList |
| |
| ZoneType() : rawoffset(-1), dstoffset(-1), abbr(-1) {} |
| |
| // A restricted equality, of just the raw and dst offset |
| bool matches(const ZoneType& other) { |
| return rawoffset == other.rawoffset && |
| dstoffset == other.dstoffset; |
| } |
| }; |
| |
| // A collection of transitions from one ZoneType to another, together |
| // with a list of the ZoneTypes. A ZoneInfo object may have a long |
| // list of transitions between a smaller list of ZoneTypes. |
| // |
| // This object represents the contents of a single zic-created |
| // zoneinfo file. |
| struct ZoneInfo { |
| vector<Transition> transitions; |
| vector<ZoneType> types; |
| vector<string> abbrs; |
| |
| string finalRuleID; |
| int32_t finalOffset; |
| int32_t finalYear; // -1 if none |
| |
| // If this is an alias, then all other fields are meaningless, and |
| // this field will point to the "real" zone 0..n-1. |
| int32_t aliasTo; // -1 if this is a "real" zone |
| |
| // If there are aliases TO this zone, then the following set will |
| // contain their index numbers (each index >= 0). |
| set<int32_t> aliases; |
| |
| ZoneInfo() : finalYear(-1), aliasTo(-1) {} |
| |
| void mergeFinalData(const FinalZone& fz); |
| |
| void optimizeTypeList(); |
| |
| // Set this zone to be an alias TO another zone. |
| void setAliasTo(int32_t index); |
| |
| // Clear the list of aliases OF this zone. |
| void clearAliases(); |
| |
| // Add an alias to the list of aliases OF this zone. |
| void addAlias(int32_t index); |
| |
| // Is this an alias to another zone? |
| bool isAlias() const { |
| return aliasTo >= 0; |
| } |
| |
| // Retrieve alias list |
| const set<int32_t>& getAliases() const { |
| return aliases; |
| } |
| |
| void print(ostream& os, const string& id) const; |
| }; |
| |
| void ZoneInfo::clearAliases() { |
| assert(aliasTo < 0); |
| aliases.clear(); |
| } |
| |
| void ZoneInfo::addAlias(int32_t index) { |
| assert(aliasTo < 0 && index >= 0 && aliases.find(index) == aliases.end()); |
| aliases.insert(index); |
| } |
| |
| void ZoneInfo::setAliasTo(int32_t index) { |
| assert(index >= 0); |
| assert(aliases.size() == 0); |
| aliasTo = index; |
| } |
| |
| typedef map<string, ZoneInfo> ZoneMap; |
| |
| typedef ZoneMap::const_iterator ZoneMapIter; |
| |
| //-------------------------------------------------------------------- |
| // ZONEINFO |
| //-------------------------------------------------------------------- |
| |
| // Global map holding all our ZoneInfo objects, indexed by id. |
| ZoneMap ZONEINFO; |
| |
| //-------------------------------------------------------------------- |
| // zoneinfo file parsing |
| //-------------------------------------------------------------------- |
| |
| // Read zic-coded 32-bit integer from file |
| int64_t readcoded(ifstream& file, int64_t minv=numeric_limits<int64_t>::min(), |
| int64_t maxv=numeric_limits<int64_t>::max()) { |
| unsigned char buf[4]; // must be UNSIGNED |
| int64_t val=0; |
| file.read((char*)buf, 4); |
| for(int32_t i=0,shift=24;i<4;++i,shift-=8) { |
| val |= buf[i] << shift; |
| } |
| if (val < minv || val > maxv) { |
| ostringstream os; |
| os << "coded value out-of-range: " << val << ", expected [" |
| << minv << ", " << maxv << "]"; |
| throw out_of_range(os.str()); |
| } |
| return val; |
| } |
| |
| // Read zic-coded 64-bit integer from file |
| int64_t readcoded64(ifstream& file, int64_t minv=numeric_limits<int64_t>::min(), |
| int64_t maxv=numeric_limits<int64_t>::max()) { |
| unsigned char buf[8]; // must be UNSIGNED |
| int64_t val=0; |
| file.read((char*)buf, 8); |
| for(int32_t i=0,shift=56;i<8;++i,shift-=8) { |
| val |= (int64_t)buf[i] << shift; |
| } |
| if (val < minv || val > maxv) { |
| ostringstream os; |
| os << "coded value out-of-range: " << val << ", expected [" |
| << minv << ", " << maxv << "]"; |
| throw out_of_range(os.str()); |
| } |
| return val; |
| } |
| |
| // Read a boolean value |
| bool readbool(ifstream& file) { |
| char c; |
| file.read(&c, 1); |
| if (c!=0 && c!=1) { |
| ostringstream os; |
| os << "boolean value out-of-range: " << (int32_t)c; |
| throw out_of_range(os.str()); |
| } |
| return (c!=0); |
| } |
| |
| /** |
| * Read the zoneinfo file structure (see tzfile.h) into a ZoneInfo |
| * @param file an already-open file stream |
| */ |
| void readzoneinfo(ifstream& file, ZoneInfo& info, bool is64bitData=false) { |
| int32_t i; |
| |
| // Check for TZ_ICU_MAGIC signature at file start. If we get a |
| // signature mismatch, it means we're trying to read a file which |
| // isn't a ICU-modified-zic-created zoneinfo file. Typically this |
| // means the user is passing in a "normal" zoneinfo directory, or |
| // a zoneinfo directory that is polluted with other files, or that |
| // the user passed in the wrong directory. |
| char buf[32]; |
| file.read(buf, 4); |
| if (strncmp(buf, TZ_ICU_MAGIC, 4) != 0) { |
| throw invalid_argument("TZ_ICU_MAGIC signature missing"); |
| } |
| // skip additional Olson byte version |
| file.read(buf, 1); |
| // if '\0', we have just one copy of data, if '2', there is additional |
| // 64 bit version at the end. |
| if(buf[0]!=0 && buf[0]!='2') { |
| throw invalid_argument("Bad Olson version info"); |
| } |
| |
| // Read reserved bytes. The first of these will be a version byte. |
| file.read(buf, 15); |
| if (*(ICUZoneinfoVersion*)&buf != TZ_ICU_VERSION) { |
| throw invalid_argument("File version mismatch"); |
| } |
| |
| // Read array sizes |
| int64_t isgmtcnt = readcoded(file, 0); |
| int64_t isdstcnt = readcoded(file, 0); |
| int64_t leapcnt = readcoded(file, 0); |
| int64_t timecnt = readcoded(file, 0); |
| int64_t typecnt = readcoded(file, 0); |
| int64_t charcnt = readcoded(file, 0); |
| |
| // Confirm sizes that we assume to be equal. These assumptions |
| // are drawn from a reading of the zic source (2003a), so they |
| // should hold unless the zic source changes. |
| if (isgmtcnt != typecnt || isdstcnt != typecnt) { |
| throw invalid_argument("count mismatch between tzh_ttisgmtcnt, tzh_ttisdstcnt, tth_typecnt"); |
| } |
| |
| // Used temporarily to store transition times and types. We need |
| // to do this because the times and types are stored in two |
| // separate arrays. |
| vector<int64_t> transitionTimes(timecnt, -1); // temporary |
| vector<int32_t> transitionTypes(timecnt, -1); // temporary |
| |
| // Read transition times |
| for (i=0; i<timecnt; ++i) { |
| if (is64bitData) { |
| transitionTimes[i] = readcoded64(file); |
| } else { |
| transitionTimes[i] = readcoded(file); |
| } |
| } |
| |
| // Read transition types |
| for (i=0; i<timecnt; ++i) { |
| unsigned char c; |
| file.read((char*) &c, 1); |
| int32_t t = (int32_t) c; |
| if (t < 0 || t >= typecnt) { |
| ostringstream os; |
| os << "illegal type: " << t << ", expected [0, " << (typecnt-1) << "]"; |
| throw out_of_range(os.str()); |
| } |
| transitionTypes[i] = t; |
| } |
| |
| // Build transitions vector out of corresponding times and types. |
| bool insertInitial = false; |
| if (is64bitData) { |
| if (timecnt > 0) { |
| int32_t minidx = -1; |
| for (i=0; i<timecnt; ++i) { |
| if (transitionTimes[i] < LOWEST_TIME32) { |
| if (minidx == -1 || transitionTimes[i] > transitionTimes[minidx]) { |
| // Preserve the latest transition before the 32bit minimum time |
| minidx = i; |
| } |
| } else if (transitionTimes[i] > HIGHEST_TIME32) { |
| // Skipping the rest of the transition data. We cannot put such |
| // transitions into zoneinfo.res, because data is limited to singed |
| // 32bit int by the ICU resource bundle. |
| break; |
| } else { |
| info.transitions.push_back(Transition(transitionTimes[i], transitionTypes[i])); |
| } |
| } |
| |
| if (minidx != -1) { |
| // If there are any transitions before the 32bit minimum time, |
| // put the type information with the 32bit minimum time |
| vector<Transition>::iterator itr = info.transitions.begin(); |
| info.transitions.insert(itr, Transition(LOWEST_TIME32, transitionTypes[minidx])); |
| } else { |
| // Otherwise, we need insert the initial type later |
| insertInitial = true; |
| } |
| } |
| } else { |
| for (i=0; i<timecnt; ++i) { |
| info.transitions.push_back(Transition(transitionTimes[i], transitionTypes[i])); |
| } |
| } |
| |
| // Read types (except for the isdst and isgmt flags, which come later (why??)) |
| for (i=0; i<typecnt; ++i) { |
| ZoneType type; |
| |
| type.rawoffset = readcoded(file); |
| type.dstoffset = readcoded(file); |
| type.isdst = readbool(file); |
| |
| unsigned char c; |
| file.read((char*) &c, 1); |
| type.abbr = (int32_t) c; |
| |
| if (type.isdst != (type.dstoffset != 0)) { |
| throw invalid_argument("isdst does not reflect dstoffset"); |
| } |
| |
| info.types.push_back(type); |
| } |
| |
| assert(info.types.size() == (unsigned) typecnt); |
| |
| if (insertInitial) { |
| assert(timecnt > 0); |
| assert(typecnt > 0); |
| |
| int32_t initialTypeIdx = -1; |
| |
| // Check if the first type is not dst |
| if (info.types.at(0).dstoffset != 0) { |
| // Initial type's rawoffset is same with the rawoffset after the |
| // first transition, but no DST is observed. |
| int64_t rawoffset0 = (info.types.at(info.transitions.at(0).type)).rawoffset; |
| // Look for matching type |
| for (i=0; i<(int32_t)info.types.size(); ++i) { |
| if (info.types.at(i).rawoffset == rawoffset0 |
| && info.types.at(i).dstoffset == 0) { |
| initialTypeIdx = i; |
| break; |
| } |
| } |
| } else { |
| initialTypeIdx = 0; |
| } |
| assert(initialTypeIdx >= 0); |
| // Add the initial type associated with the lowest int32 time |
| vector<Transition>::iterator itr = info.transitions.begin(); |
| info.transitions.insert(itr, Transition(LOWEST_TIME32, initialTypeIdx)); |
| } |
| |
| |
| // Read the abbreviation string |
| if (charcnt) { |
| // All abbreviations are concatenated together, with a 0 at |
| // the end of each abbr. |
| char* str = new char[charcnt + 8]; |
| file.read(str, charcnt); |
| |
| // Split abbreviations apart into individual strings. Record |
| // offset of each abbr in a vector. |
| vector<int32_t> abbroffset; |
| char *limit=str+charcnt; |
| for (char* p=str; p<limit; ++p) { |
| char* start = p; |
| while (*p != 0) ++p; |
| info.abbrs.push_back(string(start, p-start)); |
| abbroffset.push_back(start-str); |
| } |
| |
| // Remap all the abbrs. Old value is offset into concatenated |
| // raw abbr strings. New value is index into vector of |
| // strings. E.g., 0,5,10,14 => 0,1,2,3. |
| |
| // Keep track of which abbreviations get used. |
| vector<bool> abbrseen(abbroffset.size(), false); |
| |
| for (vector<ZoneType>::iterator it=info.types.begin(); |
| it!=info.types.end(); |
| ++it) { |
| vector<int32_t>::const_iterator x= |
| find(abbroffset.begin(), abbroffset.end(), it->abbr); |
| if (x==abbroffset.end()) { |
| // TODO: Modify code to add a new string to the end of |
| // the abbr list when a middle offset is given, e.g., |
| // "abc*def*" where * == '\0', take offset of 1 and |
| // make the array "abc", "def", "bc", and translate 1 |
| // => 2. NOT CRITICAL since we don't even use the |
| // abbr at this time. |
| #if 0 |
| // TODO: Re-enable this warning if we start using |
| // the Olson abbr data, or if the above TODO is completed. |
| ostringstream os; |
| os << "Warning: unusual abbr offset " << it->abbr |
| << ", expected one of"; |
| for (vector<int32_t>::const_iterator y=abbroffset.begin(); |
| y!=abbroffset.end(); ++y) { |
| os << ' ' << *y; |
| } |
| cerr << os.str() << "; using 0" << endl; |
| #endif |
| it->abbr = 0; |
| } else { |
| int32_t index = x - abbroffset.begin(); |
| it->abbr = index; |
| abbrseen[index] = true; |
| } |
| } |
| |
| for (int32_t ii=0;ii<(int32_t) abbrseen.size();++ii) { |
| if (!abbrseen[ii]) { |
| cerr << "Warning: unused abbreviation: " << ii << endl; |
| } |
| } |
| } |
| |
| // Read leap second info, if any. |
| // *** We discard leap second data. *** |
| for (i=0; i<leapcnt; ++i) { |
| readcoded(file); // transition time |
| readcoded(file); // total correction after above |
| } |
| |
| // Read isstd flags |
| for (i=0; i<typecnt; ++i) info.types[i].isstd = readbool(file); |
| |
| // Read isgmt flags |
| for (i=0; i<typecnt; ++i) info.types[i].isgmt = readbool(file); |
| } |
| |
| //-------------------------------------------------------------------- |
| // Directory and file reading |
| //-------------------------------------------------------------------- |
| |
| /** |
| * Process a single zoneinfo file, adding the data to ZONEINFO |
| * @param path the full path to the file, e.g., ".\zoneinfo\America\Los_Angeles" |
| * @param id the zone ID, e.g., "America/Los_Angeles" |
| */ |
| void handleFile(string path, string id) { |
| // Check for duplicate id |
| if (ZONEINFO.find(id) != ZONEINFO.end()) { |
| ostringstream os; |
| os << "duplicate zone ID: " << id; |
| throw invalid_argument(os.str()); |
| } |
| |
| ifstream file(path.c_str(), ios::in | ios::binary); |
| if (!file) { |
| throw invalid_argument("can't open file"); |
| } |
| |
| ZoneInfo info; |
| readzoneinfo(file, info); |
| |
| // Check for errors |
| if (!file) { |
| throw invalid_argument("read error"); |
| } |
| |
| #ifdef USE64BITDATA |
| ZoneInfo info64; |
| readzoneinfo(file, info64, true); |
| |
| bool alldone = false; |
| int64_t eofPos = (int64_t) file.tellg(); |
| |
| // '\n' + <envvar string> + '\n' after the 64bit version data |
| char ch = file.get(); |
| if (ch == 0x0a) { |
| bool invalidchar = false; |
| while (file.get(ch)) { |
| if (ch == 0x0a) { |
| break; |
| } |
| if (ch < 0x20) { |
| // must be printable ascii |
| invalidchar = true; |
| break; |
| } |
| } |
| if (!invalidchar) { |
| eofPos = (int64_t) file.tellg(); |
| file.seekg(0, ios::end); |
| eofPos = eofPos - (int64_t) file.tellg(); |
| if (eofPos == 0) { |
| alldone = true; |
| } |
| } |
| } |
| if (!alldone) { |
| ostringstream os; |
| os << (-eofPos) << " unprocessed bytes at end"; |
| throw invalid_argument(os.str()); |
| } |
| |
| ZONEINFO[id] = info64; |
| |
| #else |
| // Check eof-relative pos (there may be a cleaner way to do this) |
| int64_t eofPos = (int64_t) file.tellg(); |
| char buf[32]; |
| file.read(buf, 4); |
| file.seekg(0, ios::end); |
| eofPos = eofPos - (int64_t) file.tellg(); |
| if (eofPos) { |
| // 2006c merged 32 and 64 bit versions in a fat binary |
| // 64 version starts at the end of 32 bit version. |
| // Therefore, if the file is *not* consumed, check |
| // if it is maybe being restarted. |
| if (strncmp(buf, TZ_ICU_MAGIC, 4) != 0) { |
| ostringstream os; |
| os << (-eofPos) << " unprocessed bytes at end"; |
| throw invalid_argument(os.str()); |
| } |
| } |
| ZONEINFO[id] = info; |
| #endif |
| } |
| |
| /** |
| * Recursively scan the given directory, calling handleFile() for each |
| * file in the tree. The user should call with the root directory and |
| * a prefix of "". The function will call itself with non-empty |
| * prefix values. |
| */ |
| #ifdef WIN32 |
| |
| void scandir(string dirname, string prefix="") { |
| HANDLE hList; |
| WIN32_FIND_DATA FileData; |
| |
| // Get the first file |
| hList = FindFirstFile((dirname + "\\*").c_str(), &FileData); |
| if (hList == INVALID_HANDLE_VALUE) { |
| cerr << "Error: Invalid directory: " << dirname << endl; |
| exit(1); |
| } |
| for (;;) { |
| string name(FileData.cFileName); |
| string path(dirname + "\\" + name); |
| if (FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { |
| if (name != "." && name != "..") { |
| scandir(path, prefix + name + "/"); |
| } |
| } else { |
| try { |
| string id = prefix + name; |
| handleFile(path, id); |
| } catch (const exception& e) { |
| cerr << "Error: While processing \"" << path << "\", " |
| << e.what() << endl; |
| exit(1); |
| } |
| } |
| |
| if (!FindNextFile(hList, &FileData)) { |
| if (GetLastError() == ERROR_NO_MORE_FILES) { |
| break; |
| } // else...? |
| } |
| } |
| FindClose(hList); |
| } |
| |
| #else |
| |
| void scandir(string dir, string prefix="") { |
| DIR *dp; |
| struct dirent *dir_entry; |
| struct stat stat_info; |
| char pwd[512]; |
| vector<string> subdirs; |
| vector<string> subfiles; |
| |
| if ((dp = opendir(dir.c_str())) == NULL) { |
| cerr << "Error: Invalid directory: " << dir << endl; |
| exit(1); |
| } |
| if (!getcwd(pwd, sizeof(pwd))) { |
| cerr << "Error: Directory name too long" << endl; |
| exit(1); |
| } |
| chdir(dir.c_str()); |
| while ((dir_entry = readdir(dp)) != NULL) { |
| string name = dir_entry->d_name; |
| string path = dir + "/" + name; |
| lstat(dir_entry->d_name,&stat_info); |
| if (S_ISDIR(stat_info.st_mode)) { |
| if (name != "." && name != "..") { |
| subdirs.push_back(path); |
| subdirs.push_back(prefix + name + "/"); |
| // scandir(path, prefix + name + "/"); |
| } |
| } else { |
| try { |
| string id = prefix + name; |
| subfiles.push_back(path); |
| subfiles.push_back(id); |
| // handleFile(path, id); |
| } catch (const exception& e) { |
| cerr << "Error: While processing \"" << path << "\", " |
| << e.what() << endl; |
| exit(1); |
| } |
| } |
| } |
| closedir(dp); |
| chdir(pwd); |
| |
| for(int32_t i=0;i<(int32_t)subfiles.size();i+=2) { |
| try { |
| handleFile(subfiles[i], subfiles[i+1]); |
| } catch (const exception& e) { |
| cerr << "Error: While processing \"" << subfiles[i] << "\", " |
| << e.what() << endl; |
| exit(1); |
| } |
| } |
| for(int32_t i=0;i<(int32_t)subdirs.size();i+=2) { |
| scandir(subdirs[i], subdirs[i+1]); |
| } |
| } |
| |
| #endif |
| |
| //-------------------------------------------------------------------- |
| // Final zone and rule info |
| //-------------------------------------------------------------------- |
| |
| /** |
| * Read and discard the current line. |
| */ |
| void consumeLine(istream& in) { |
| int32_t c; |
| do { |
| c = in.get(); |
| } while (c != EOF && c != '\n'); |
| } |
| |
| enum { |
| DOM = 0, |
| DOWGEQ = 1, |
| DOWLEQ = 2 |
| }; |
| |
| const char* TIME_MODE[] = {"w", "s", "u"}; |
| |
| // Allow 29 days in February because zic outputs February 29 |
| // for rules like "last Sunday in February". |
| const int32_t MONTH_LEN[] = {31,29,31,30,31,30,31,31,30,31,30,31}; |
| |
| const int32_t HOUR = 3600; |
| |
| struct FinalZone { |
| int32_t offset; // raw offset |
| int32_t year; // takes effect for y >= year |
| string ruleid; |
| set<string> aliases; |
| FinalZone(int32_t _offset, int32_t _year, const string& _ruleid) : |
| offset(_offset), year(_year), ruleid(_ruleid) { |
| if (offset <= -16*HOUR || offset >= 16*HOUR) { |
| ostringstream os; |
| os << "Invalid input offset " << offset |
| << " for year " << year |
| << " and rule ID " << ruleid; |
| throw invalid_argument(os.str()); |
| } |
| if (year < 1900 || year >= 2050) { |
| ostringstream os; |
| os << "Invalid input year " << year |
| << " with offset " << offset |
| << " and rule ID " << ruleid; |
| throw invalid_argument(os.str()); |
| } |
| } |
| FinalZone() : offset(-1), year(-1) {} |
| void addLink(const string& alias) { |
| if (aliases.find(alias) != aliases.end()) { |
| ostringstream os; |
| os << "Duplicate alias " << alias; |
| throw invalid_argument(os.str()); |
| } |
| aliases.insert(alias); |
| } |
| }; |
| |
| struct FinalRulePart { |
| int32_t mode; |
| int32_t month; |
| int32_t dom; |
| int32_t dow; |
| int32_t time; |
| int32_t offset; // dst offset, usually either 0 or 1:00 |
| |
| // Isstd and isgmt only have 3 valid states, corresponding to local |
| // wall time, local standard time, and GMT standard time. |
| // Here is how the isstd & isgmt flags are set by zic: |
| //| case 's': /* Standard */ |
| //| rp->r_todisstd = TRUE; |
| //| rp->r_todisgmt = FALSE; |
| //| case 'w': /* Wall */ |
| //| rp->r_todisstd = FALSE; |
| //| rp->r_todisgmt = FALSE; |
| //| case 'g': /* Greenwich */ |
| //| case 'u': /* Universal */ |
| //| case 'z': /* Zulu */ |
| //| rp->r_todisstd = TRUE; |
| //| rp->r_todisgmt = TRUE; |
| bool isstd; |
| bool isgmt; |
| |
| bool isset; // used during building; later ignored |
| |
| FinalRulePart() : isset(false) {} |
| void set(const string& id, |
| const string& _mode, |
| int32_t _month, |
| int32_t _dom, |
| int32_t _dow, |
| int32_t _time, |
| bool _isstd, |
| bool _isgmt, |
| int32_t _offset) { |
| if (isset) { |
| throw invalid_argument("FinalRulePart set twice"); |
| } |
| isset = true; |
| if (_mode == "DOWLEQ") { |
| mode = DOWLEQ; |
| } else if (_mode == "DOWGEQ") { |
| mode = DOWGEQ; |
| } else if (_mode == "DOM") { |
| mode = DOM; |
| } else { |
| throw invalid_argument("Unrecognized FinalRulePart mode"); |
| } |
| month = _month; |
| dom = _dom; |
| dow = _dow; |
| time = _time; |
| isstd = _isstd; |
| isgmt = _isgmt; |
| offset = _offset; |
| |
| ostringstream os; |
| if (month < 0 || month >= 12) { |
| os << "Invalid input month " << month; |
| } |
| if (dom < 1 || dom > MONTH_LEN[month]) { |
| os << "Invalid input day of month " << dom; |
| } |
| if (mode != DOM && (dow < 0 || dow >= 7)) { |
| os << "Invalid input day of week " << dow; |
| } |
| if (offset < 0 || offset > HOUR) { |
| os << "Invalid input offset " << offset; |
| } |
| if (isgmt && !isstd) { |
| os << "Invalid input isgmt && !isstd"; |
| } |
| if (!os.str().empty()) { |
| os << " for rule " |
| << id |
| << _mode |
| << month << dom << dow << time |
| << isstd << isgmt |
| << offset; |
| throw invalid_argument(os.str()); |
| } |
| } |
| |
| /** |
| * Return the time mode as an ICU SimpleTimeZone int from 0..2; |
| * see simpletz.h. |
| */ |
| int32_t timemode() const { |
| if (isgmt) { |
| assert(isstd); |
| return 2; // gmt standard |
| } |
| if (isstd) { |
| return 1; // local standard |
| } |
| return 0; // local wall |
| } |
| |
| // The SimpleTimeZone encoding method for rules is as follows: |
| // stz_dowim stz_dow |
| // DOM: dom 0 |
| // DOWGEQ: dom -(dow+1) |
| // DOWLEQ: -dom -(dow+1) |
| // E.g., to encode Mon>=7, use stz_dowim=7, stz_dow=-2 |
| // to encode Mon<=7, use stz_dowim=-7, stz_dow=-2 |
| // to encode 7, use stz_dowim=7, stz_dow=0 |
| // Note that for this program and for SimpleTimeZone, 0==Jan, |
| // but for this program 0==Sun while for SimpleTimeZone 1==Sun. |
| |
| /** |
| * Return a "dowim" param suitable for SimpleTimeZone. |
| */ |
| int32_t stz_dowim() const { |
| return (mode == DOWLEQ) ? -dom : dom; |
| } |
| |
| /** |
| * Return a "dow" param suitable for SimpleTimeZone. |
| */ |
| int32_t stz_dow() const { |
| return (mode == DOM) ? 0 : -(dow+1); |
| } |
| }; |
| |
| struct FinalRule { |
| FinalRulePart part[2]; |
| |
| bool isset() const { |
| return part[0].isset && part[1].isset; |
| } |
| |
| void print(ostream& os) const; |
| }; |
| |
| map<string,FinalZone> finalZones; |
| map<string,FinalRule> finalRules; |
| |
| map<string, set<string> > links; |
| map<string, string> reverseLinks; |
| map<string, string> linkSource; // id => "Olson link" or "ICU alias" |
| |
| /** |
| * Predicate used to find FinalRule objects that do not have both |
| * sub-parts set (indicating an error in the input file). |
| */ |
| bool isNotSet(const pair<const string,FinalRule>& p) { |
| return !p.second.isset(); |
| } |
| |
| /** |
| * Predicate used to find FinalZone objects that do not map to a known |
| * rule (indicating an error in the input file). |
| */ |
| bool mapsToUnknownRule(const pair<const string,FinalZone>& p) { |
| return finalRules.find(p.second.ruleid) == finalRules.end(); |
| } |
| |
| /** |
| * This set is used to make sure each rule in finalRules is used at |
| * least once. First we populate it with all the rules from |
| * finalRules; then we remove all the rules referred to in |
| * finaleZones. |
| */ |
| set<string> ruleIDset; |
| |
| void insertRuleID(const pair<string,FinalRule>& p) { |
| ruleIDset.insert(p.first); |
| } |
| |
| void eraseRuleID(const pair<string,FinalZone>& p) { |
| ruleIDset.erase(p.second.ruleid); |
| } |
| |
| /** |
| * Populate finalZones and finalRules from the given istream. |
| */ |
| void readFinalZonesAndRules(istream& in) { |
| |
| for (;;) { |
| string token; |
| in >> token; |
| if (in.eof() || !in) { |
| break; |
| } else if (token == "zone") { |
| // zone Africa/Cairo 7200 1995 Egypt # zone Africa/Cairo, offset 7200, year >= 1995, rule Egypt (0) |
| string id, ruleid; |
| int32_t offset, year; |
| in >> id >> offset >> year >> ruleid; |
| consumeLine(in); |
| finalZones[id] = FinalZone(offset, year, ruleid); |
| } else if (token == "rule") { |
| // rule US DOWGEQ 3 1 0 7200 0 0 3600 # 52: US, file data/northamerica, line 119, mode DOWGEQ, April, dom 1, Sunday, time 7200, isstd 0, isgmt 0, offset 3600 |
| // rule US DOWLEQ 9 31 0 7200 0 0 0 # 53: US, file data/northamerica, line 114, mode DOWLEQ, October, dom 31, Sunday, time 7200, isstd 0, isgmt 0, offset 0 |
| string id, mode; |
| int32_t month, dom, dow, time, offset; |
| bool isstd, isgmt; |
| in >> id >> mode >> month >> dom >> dow >> time >> isstd >> isgmt >> offset; |
| consumeLine(in); |
| FinalRule& fr = finalRules[id]; |
| int32_t p = fr.part[0].isset ? 1 : 0; |
| fr.part[p].set(id, mode, month, dom, dow, time, isstd, isgmt, offset); |
| } else if (token == "link") { |
| string fromid, toid; // fromid == "real" zone, toid == alias |
| in >> fromid >> toid; |
| // DO NOT consumeLine(in); |
| if (finalZones.find(toid) != finalZones.end()) { |
| throw invalid_argument("Bad link: `to' id is a \"real\" zone"); |
| } |
| |
| links[fromid].insert(toid); |
| reverseLinks[toid] = fromid; |
| |
| linkSource[fromid] = "Olson link"; |
| linkSource[toid] = "Olson link"; |
| } else if (token.length() > 0 && token[0] == '#') { |
| consumeLine(in); |
| } else { |
| throw invalid_argument("Unrecognized keyword"); |
| } |
| } |
| |
| if (!in.eof() && !in) { |
| throw invalid_argument("Parse failure"); |
| } |
| |
| // Perform validity check: Each rule should have data for 2 parts. |
| if (count_if(finalRules.begin(), finalRules.end(), isNotSet) != 0) { |
| throw invalid_argument("One or more incomplete rule pairs"); |
| } |
| |
| // Perform validity check: Each zone should map to a known rule. |
| if (count_if(finalZones.begin(), finalZones.end(), mapsToUnknownRule) != 0) { |
| throw invalid_argument("One or more zones refers to an unknown rule"); |
| } |
| |
| // Perform validity check: Each rule should be referred to by a zone. |
| ruleIDset.clear(); |
| for_each(finalRules.begin(), finalRules.end(), insertRuleID); |
| for_each(finalZones.begin(), finalZones.end(), eraseRuleID); |
| if (ruleIDset.size() != 0) { |
| throw invalid_argument("Unused rules"); |
| } |
| } |
| |
| //-------------------------------------------------------------------- |
| // Resource bundle output |
| //-------------------------------------------------------------------- |
| |
| // SEE olsontz.h FOR RESOURCE BUNDLE DATA LAYOUT |
| |
| void ZoneInfo::print(ostream& os, const string& id) const { |
| // Implement compressed format #2: |
| |
| os << " /* " << id << " */ "; |
| |
| if (aliasTo >= 0) { |
| assert(aliases.size() == 0); |
| os << ":int { " << aliasTo << " } "; // No endl - save room for comment. |
| return; |
| } |
| |
| os << ":array {" << endl; |
| |
| vector<Transition>::const_iterator trn; |
| vector<ZoneType>::const_iterator typ; |
| |
| bool first=true; |
| os << " :intvector { "; |
| for (trn = transitions.begin(); trn != transitions.end(); ++trn) { |
| if (!first) os << ", "; |
| first = false; |
| os << trn->time; |
| } |
| os << " }" << endl; |
| |
| first=true; |
| os << " :intvector { "; |
| for (typ = types.begin(); typ != types.end(); ++typ) { |
| if (!first) os << ", "; |
| first = false; |
| os << typ->rawoffset << ", " << typ->dstoffset; |
| } |
| os << " }" << endl; |
| |
| os << " :bin { \"" << hex << setfill('0'); |
| for (trn = transitions.begin(); trn != transitions.end(); ++trn) { |
| os << setw(2) << trn->type; |
| } |
| os << dec << "\" }" << endl; |
| |
| // Final zone info, if any |
| if (finalYear != -1) { |
| os << " \"" << finalRuleID << "\"" << endl; |
| os << " :intvector { " << finalOffset << ", " |
| << finalYear << " }" << endl; |
| } |
| |
| // Alias list, if any |
| if (aliases.size() != 0) { |
| first = true; |
| os << " :intvector { "; |
| for (set<int32_t>::const_iterator i=aliases.begin(); i!=aliases.end(); ++i) { |
| if (!first) os << ", "; |
| first = false; |
| os << *i; |
| } |
| os << " }" << endl; |
| } |
| |
| os << " } "; // no trailing 'endl', so comments can be placed. |
| } |
| |
| inline ostream& |
| operator<<(ostream& os, const ZoneMap& zoneinfo) { |
| int32_t c = 0; |
| for (ZoneMapIter it = zoneinfo.begin(); |
| it != zoneinfo.end(); |
| ++it) { |
| if(c) os << ","; |
| it->second.print(os, it->first); |
| os << "//Z#" << c++ << endl; |
| } |
| return os; |
| } |
| |
| // print the string list |
| ostream& printStringList( ostream& os, const ZoneMap& zoneinfo) { |
| int32_t n = 0; // count |
| int32_t col = 0; // column |
| os << " Names {" << endl |
| << " "; |
| for (ZoneMapIter it = zoneinfo.begin(); |
| it != zoneinfo.end(); |
| ++it) { |
| if(n) { |
| os << ","; |
| col ++; |
| } |
| const string& id = it->first; |
| os << "\"" << id << "\""; |
| col += id.length() + 2; |
| if(col >= 50) { |
| os << " // " << n << endl |
| << " "; |
| col = 0; |
| } |
| n++; |
| } |
| os << " // " << (n-1) << endl |
| << " }" << endl; |
| |
| return os; |
| } |
| |
| //-------------------------------------------------------------------- |
| // main |
| //-------------------------------------------------------------------- |
| |
| // Unary predicate for finding transitions after a given time |
| bool isAfter(const Transition t, int64_t thresh) { |
| return t.time >= thresh; |
| } |
| |
| /** |
| * A zone type that contains only the raw and dst offset. Used by the |
| * optimizeTypeList() method. |
| */ |
| struct SimplifiedZoneType { |
| int64_t rawoffset; |
| int64_t dstoffset; |
| SimplifiedZoneType() : rawoffset(-1), dstoffset(-1) {} |
| SimplifiedZoneType(const ZoneType& t) : rawoffset(t.rawoffset), |
| dstoffset(t.dstoffset) {} |
| bool operator<(const SimplifiedZoneType& t) const { |
| return rawoffset < t.rawoffset || |
| (rawoffset == t.rawoffset && |
| dstoffset < t.dstoffset); |
| } |
| }; |
| |
| /** |
| * Construct a ZoneType from a SimplifiedZoneType. Note that this |
| * discards information; the new ZoneType will have meaningless |
| * (empty) abbr, isdst, isstd, and isgmt flags; this is appropriate, |
| * since ignoring these is how we do optimization (we have no use for |
| * these in historical transitions). |
| */ |
| ZoneType::ZoneType(const SimplifiedZoneType& t) : |
| rawoffset(t.rawoffset), dstoffset(t.dstoffset), |
| abbr(-1), isdst(false), isstd(false), isgmt(false) {} |
| |
| /** |
| * Optimize the type list to remove excess entries. The type list may |
| * contain entries that are distinct only in terms of their dst, std, |
| * or gmt flags. Since we don't care about those flags, we can reduce |
| * the type list to a set of unique raw/dst offset pairs, and remap |
| * the type indices in the transition list, which stores, for each |
| * transition, a transition time and a type index. |
| */ |
| void ZoneInfo::optimizeTypeList() { |
| // Assemble set of unique types; only those in the `transitions' |
| // list, since there may be unused types in the `types' list |
| // corresponding to transitions that have been trimmed (during |
| // merging of final data). |
| |
| if (aliasTo >= 0) return; // Nothing to do for aliases |
| |
| // If there are zero transitions and one type, then leave that as-is. |
| if (transitions.size() == 0) { |
| if (types.size() != 1) { |
| cerr << "Error: transition count = 0, type count = " << types.size() << endl; |
| } |
| return; |
| } |
| |
| set<SimplifiedZoneType> simpleset; |
| for (vector<Transition>::const_iterator i=transitions.begin(); |
| i!=transitions.end(); ++i) { |
| assert(i->type < (int32_t)types.size()); |
| simpleset.insert(types[i->type]); |
| } |
| |
| // Map types to integer indices |
| map<SimplifiedZoneType,int32_t> simplemap; |
| int32_t n=0; |
| for (set<SimplifiedZoneType>::const_iterator i=simpleset.begin(); |
| i!=simpleset.end(); ++i) { |
| simplemap[*i] = n++; |
| } |
| |
| // Remap transitions |
| for (vector<Transition>::iterator i=transitions.begin(); |
| i!=transitions.end(); ++i) { |
| assert(i->type < (int32_t)types.size()); |
| ZoneType oldtype = types[i->type]; |
| SimplifiedZoneType newtype(oldtype); |
| assert(simplemap.find(newtype) != simplemap.end()); |
| i->type = simplemap[newtype]; |
| } |
| |
| // Replace type list |
| types.clear(); |
| copy(simpleset.begin(), simpleset.end(), back_inserter(types)); |
| } |
| |
| /** |
| * Merge final zone data into this zone. |
| */ |
| void ZoneInfo::mergeFinalData(const FinalZone& fz) { |
| int32_t year = fz.year; |
| int64_t seconds = yearToSeconds(year); |
| vector<Transition>::iterator it = |
| find_if(transitions.begin(), transitions.end(), |
| bind2nd(ptr_fun(isAfter), seconds)); |
| transitions.erase(it, transitions.end()); |
| |
| if (finalYear != -1) { |
| throw invalid_argument("Final zone already merged in"); |
| } |
| finalYear = fz.year; |
| finalOffset = fz.offset; |
| finalRuleID = fz.ruleid; |
| } |
| |
| /** |
| * Merge the data from the given final zone into the core zone data by |
| * calling the ZoneInfo member function mergeFinalData. |
| */ |
| void mergeOne(const string& zoneid, const FinalZone& fz) { |
| if (ZONEINFO.find(zoneid) == ZONEINFO.end()) { |
| throw invalid_argument("Unrecognized final zone ID"); |
| } |
| ZONEINFO[zoneid].mergeFinalData(fz); |
| } |
| |
| /** |
| * Visitor function that merges the final zone data into the main zone |
| * data structures. It calls mergeOne for each final zone and its |
| * list of aliases. |
| */ |
| void mergeFinalZone(const pair<string,FinalZone>& p) { |
| const string& id = p.first; |
| const FinalZone& fz = p.second; |
| |
| mergeOne(id, fz); |
| } |
| |
| /** |
| * Print this rule in resource bundle format to os. ID and enclosing |
| * braces handled elsewhere. |
| */ |
| void FinalRule::print(ostream& os) const { |
| // First print the rule part that enters DST; then the rule part |
| // that exits it. |
| int32_t whichpart = (part[0].offset != 0) ? 0 : 1; |
| assert(part[whichpart].offset != 0); |
| assert(part[1-whichpart].offset == 0); |
| |
| os << " "; |
| for (int32_t i=0; i<2; ++i) { |
| const FinalRulePart& p = part[whichpart]; |
| whichpart = 1-whichpart; |
| os << p.month << ", " << p.stz_dowim() << ", " << p.stz_dow() << ", " |
| << p.time << ", " << p.timemode() << ", "; |
| } |
| os << part[whichpart].offset << endl; |
| } |
| |
| int main(int argc, char *argv[]) { |
| string rootpath, zonetab, version; |
| |
| if (argc != 4) { |
| cout << "Usage: tz2icu <dir> <cmap> <vers>" << endl |
| << " <dir> path to zoneinfo file tree generated by" << endl |
| << " ICU-patched version of zic" << endl |
| << " <cmap> country map, from tzdata archive," << endl |
| << " typically named \"zone.tab\"" << endl |
| << " <vers> version string, such as \"2003e\"" << endl; |
| exit(1); |
| } else { |
| rootpath = argv[1]; |
| zonetab = argv[2]; |
| version = argv[3]; |
| } |
| |
| cout << "Olson data version: " << version << endl; |
| |
| try { |
| ifstream finals(ICU_ZONE_FILE); |
| if (finals) { |
| readFinalZonesAndRules(finals); |
| |
| cout << "Finished reading " << finalZones.size() |
| << " final zones and " << finalRules.size() |
| << " final rules from " ICU_ZONE_FILE << endl; |
| } else { |
| cerr << "Error: Unable to open " ICU_ZONE_FILE << endl; |
| return 1; |
| } |
| } catch (const exception& error) { |
| cerr << "Error: While reading " ICU_ZONE_FILE ": " << error.what() << endl; |
| return 1; |
| } |
| |
| //############################################################################ |
| //# Note: We no longer use tz.alias to define alias for legacy ICU time zones. |
| //# The contents of tz.alias were migrated into zic source format and |
| //# processed by zic as 'Link'. |
| //############################################################################ |
| #if 0 |
| // Read the legacy alias list and process it. Treat the legacy mappings |
| // like links, but also record them in the "legacy" hash. |
| try { |
| ifstream aliases(ICU_TZ_ALIAS); |
| if (!aliases) { |
| cerr << "Error: Unable to open " ICU_TZ_ALIAS << endl; |
| return 1; |
| } |
| int32_t n = 0; |
| string line; |
| while (getline(aliases, line)) { |
| string::size_type lb = line.find('#'); |
| if (lb != string::npos) { |
| line.resize(lb); // trim comments |
| } |
| vector<string> a; |
| istringstream is(line); |
| copy(istream_iterator<string>(is),istream_iterator<string>(), |
| back_inserter(a)); |
| if (a.size() == 0) continue; // blank line |
| if (a.size() != 2) { |
| cerr << "Error: Can't parse \"" << line << "\" in " |
| ICU_TZ_ALIAS << endl; |
| exit(1); |
| } |
| ++n; |
| |
| string alias(a[0]), olson(a[1]); |
| if (links.find(alias) != links.end()) { |
| cerr << "Error: Alias \"" << alias |
| << "\" is an Olson zone in " |
| ICU_TZ_ALIAS << endl; |
| return 1; |
| } |
| if (reverseLinks.find(alias) != reverseLinks.end()) { |
| cerr << "Error: Alias \"" << alias |
| << "\" is an Olson link to \"" << reverseLinks[olson] |
| << "\" in " << ICU_TZ_ALIAS << endl; |
| return 1; |
| } |
| |
| // Record source for error reporting |
| if (linkSource.find(olson) == linkSource.end()) { |
| linkSource[olson] = "ICU alias"; |
| } |
| assert(linkSource.find(alias) == linkSource.end()); |
| linkSource[alias] = "ICU alias"; |
| |
| links[olson].insert(alias); |
| reverseLinks[alias] = olson; |
| } |
| cout << "Finished reading " << n |
| << " aliases from " ICU_TZ_ALIAS << endl; |
| } catch (const exception& error) { |
| cerr << "Error: While reading " ICU_TZ_ALIAS ": " << error.what() << endl; |
| return 1; |
| } |
| #endif |
| try { |
| // Recursively scan all files below the given path, accumulating |
| // their data into ZONEINFO. All files must be TZif files. Any |
| // failure along the way will result in a call to exit(1). |
| scandir(rootpath); |
| } catch (const exception& error) { |
| cerr << "Error: While scanning " << rootpath << ": " << error.what() << endl; |
| return 1; |
| } |
| |
| cout << "Finished reading " << ZONEINFO.size() << " zoneinfo files [" |
| << (ZONEINFO.begin())->first << ".." |
| << (--ZONEINFO.end())->first << "]" << endl; |
| |
| try { |
| for_each(finalZones.begin(), finalZones.end(), mergeFinalZone); |
| } catch (const exception& error) { |
| cerr << "Error: While merging final zone data: " << error.what() << endl; |
| return 1; |
| } |
| |
| // Process links (including ICU aliases). For each link set we have |
| // a canonical ID (e.g., America/Los_Angeles) and a set of one or more |
| // aliases (e.g., PST, PST8PDT, ...). |
| |
| // 1. Add all aliases as zone objects in ZONEINFO |
| for (map<string,set<string> >::const_iterator i = links.begin(); |
| i!=links.end(); ++i) { |
| const string& olson = i->first; |
| const set<string>& aliases = i->second; |
| if (ZONEINFO.find(olson) == ZONEINFO.end()) { |
| cerr << "Error: Invalid " << linkSource[olson] << " to non-existent \"" |
| << olson << "\"" << endl; |
| return 1; |
| } |
| for (set<string>::const_iterator j=aliases.begin(); |
| j!=aliases.end(); ++j) { |
| ZONEINFO[*j] = ZoneInfo(); |
| } |
| } |
| |
| // 2. Create a mapping from zones to index numbers 0..n-1. |
| map<string,int32_t> zoneIDs; |
| vector<string> zoneIDlist; |
| int32_t z=0; |
| for (ZoneMap::iterator i=ZONEINFO.begin(); i!=ZONEINFO.end(); ++i) { |
| zoneIDs[i->first] = z++; |
| zoneIDlist.push_back(i->first); |
| } |
| assert(z == (int32_t) ZONEINFO.size()); |
| |
| // 3. Merge aliases. Sometimes aliases link to other aliases; we |
| // resolve these into simplest possible sets. |
| map<string,set<string> > links2; |
| map<string,string> reverse2; |
| for (map<string,set<string> >::const_iterator i = links.begin(); |
| i!=links.end(); ++i) { |
| string olson = i->first; |
| while (reverseLinks.find(olson) != reverseLinks.end()) { |
| olson = reverseLinks[olson]; |
| } |
| for (set<string>::const_iterator j=i->second.begin(); j!=i->second.end(); ++j) { |
| links2[olson].insert(*j); |
| reverse2[*j] = olson; |
| } |
| } |
| links = links2; |
| reverseLinks = reverse2; |
| |
| if (false) { // Debugging: Emit link map |
| for (map<string,set<string> >::const_iterator i = links.begin(); |
| i!=links.end(); ++i) { |
| cout << i->first << ": "; |
| for (set<string>::const_iterator j=i->second.begin(); j!=i->second.end(); ++j) { |
| cout << *j << ", "; |
| } |
| cout << endl; |
| } |
| } |
| |
| // 4. Update aliases |
| for (map<string,set<string> >::const_iterator i = links.begin(); |
| i!=links.end(); ++i) { |
| const string& olson = i->first; |
| const set<string>& aliases = i->second; |
| ZONEINFO[olson].clearAliases(); |
| ZONEINFO[olson].addAlias(zoneIDs[olson]); |
| for (set<string>::const_iterator j=aliases.begin(); |
| j!=aliases.end(); ++j) { |
| assert(zoneIDs.find(olson) != zoneIDs.end()); |
| assert(zoneIDs.find(*j) != zoneIDs.end()); |
| assert(ZONEINFO.find(*j) != ZONEINFO.end()); |
| ZONEINFO[*j].setAliasTo(zoneIDs[olson]); |
| ZONEINFO[olson].addAlias(zoneIDs[*j]); |
| } |
| } |
| |
| // Once merging of final data is complete, we can optimize the type list |
| for (ZoneMap::iterator i=ZONEINFO.begin(); i!=ZONEINFO.end(); ++i) { |
| i->second.optimizeTypeList(); |
| } |
| |
| // Create the country map |
| map<string, set<string> > countryMap; // country -> set of zones |
| map<string, string> reverseCountryMap; // zone -> country |
| try { |
| ifstream f(zonetab.c_str()); |
| if (!f) { |
| cerr << "Error: Unable to open " << zonetab << endl; |
| return 1; |
| } |
| int32_t n = 0; |
| string line; |
| while (getline(f, line)) { |
| string::size_type lb = line.find('#'); |
| if (lb != string::npos) { |
| line.resize(lb); // trim comments |
| } |
| string country, coord, zone; |
| istringstream is(line); |
| is >> country >> coord >> zone; |
| if (country.size() == 0) continue; |
| if (country.size() != 2 || zone.size() < 1) { |
| cerr << "Error: Can't parse " << line << " in " << zonetab << endl; |
| return 1; |
| } |
| if (ZONEINFO.find(zone) == ZONEINFO.end()) { |
| cerr << "Error: Country maps to invalid zone " << zone |
| << " in " << zonetab << endl; |
| return 1; |
| } |
| countryMap[country].insert(zone); |
| reverseCountryMap[zone] = country; |
| //cerr << (n+1) << ": " << country << " <=> " << zone << endl; |
| ++n; |
| } |
| cout << "Finished reading " << n |
| << " country entries from " << zonetab << endl; |
| } catch (const exception& error) { |
| cerr << "Error: While reading " << zonetab << ": " << error.what() << endl; |
| return 1; |
| } |
| |
| // Merge ICU aliases into country map. Don't merge any alias |
| // that already has a country map, since that doesn't make sense. |
| // E.g. "Link Europe/Oslo Arctic/Longyearbyen" doesn't mean we |
| // should cross-map the countries between these two zones. |
| for (map<string,set<string> >::const_iterator i = links.begin(); |
| i!=links.end(); ++i) { |
| const string& olson(i->first); |
| if (reverseCountryMap.find(olson) == reverseCountryMap.end()) { |
| continue; |
| } |
| string c = reverseCountryMap[olson]; |
| const set<string>& aliases(i->second); |
| for (set<string>::const_iterator j=aliases.begin(); |
| j != aliases.end(); ++j) { |
| if (reverseCountryMap.find(*j) == reverseCountryMap.end()) { |
| countryMap[c].insert(*j); |
| reverseCountryMap[*j] = c; |
| //cerr << "Aliased country: " << c << " <=> " << *j << endl; |
| } |
| } |
| } |
| |
| // Create a pseudo-country containing all zones belonging to no country |
| set<string> nocountry; |
| for (ZoneMap::iterator i=ZONEINFO.begin(); i!=ZONEINFO.end(); ++i) { |
| if (reverseCountryMap.find(i->first) == reverseCountryMap.end()) { |
| nocountry.insert(i->first); |
| } |
| } |
| countryMap[""] = nocountry; |
| |
| // Get local time & year for below |
| time_t sec; |
| time(&sec); |
| struct tm* now = localtime(&sec); |
| int32_t thisYear = now->tm_year + 1900; |
| |
| // Write out a resource-bundle source file containing data for |
| // all zones. |
| ofstream file(ICU_TZ_RESOURCE ".txt"); |
| if (file) { |
| file << "//---------------------------------------------------------" << endl |
| << "// Copyright (C) 2003"; |
| if (thisYear > 2003) { |
| file << "-" << thisYear; |
| } |
| file << ", International Business Machines" << endl |
| << "// Corporation and others. All Rights Reserved." << endl |
| << "//---------------------------------------------------------" << endl |
| << "// Build tool: tz2icu" << endl |
| << "// Build date: " << asctime(now) /* << endl -- asctime emits CR */ |
| << "// Olson source: ftp://elsie.nci.nih.gov/pub/" << endl |
| << "// Olson version: " << version << endl |
| << "// ICU version: " << U_ICU_VERSION << endl |
| << "//---------------------------------------------------------" << endl |
| << "// >> !!! >> THIS IS A MACHINE-GENERATED FILE << !!! <<" << endl |
| << "// >> !!! >>> DO NOT EDIT <<< !!! <<" << endl |
| << "//---------------------------------------------------------" << endl |
| << endl |
| << ICU_TZ_RESOURCE ":table(nofallback) {" << endl |
| << " TZVersion { \"" << version << "\" }" << endl |
| << " Zones:array { " << endl |
| << ZONEINFO // Zones (the actual data) |
| << " }" << endl; |
| |
| // Names correspond to the Zones list, used for binary searching. |
| printStringList ( file, ZONEINFO ); // print the Names list |
| |
| // Final Rules are used if requested by the zone |
| file << " Rules { " << endl; |
| // Emit final rules |
| int32_t frc = 0; |
| for(map<string,FinalRule>::iterator i=finalRules.begin(); |
| i!=finalRules.end(); ++i) { |
| const string& id = i->first; |
| const FinalRule& r = i->second; |
| file << " " << id << ":intvector {" << endl; |
| r.print(file); |
| file << " } //_#" << frc++ << endl; |
| } |
| file << " }" << endl; |
| |
| // Emit country (region) map. Emitting the string zone IDs results |
| // in a 188 kb binary resource; emitting the zone index numbers |
| // trims this to 171 kb. More work for the runtime code, but |
| // a smaller data footprint. |
| file << " Regions { " << endl; |
| int32_t rc = 0; |
| for (map<string, set<string> >::const_iterator i=countryMap.begin(); |
| i != countryMap.end(); ++i) { |
| string country = i->first; |
| const set<string>& zones(i->second); |
| file << " "; |
| if(country[0]==0) { |
| file << "Default"; |
| } |
| file << country << ":intvector { "; |
| bool first = true; |
| for (set<string>::const_iterator j=zones.begin(); |
| j != zones.end(); ++j) { |
| if (!first) file << ", "; |
| first = false; |
| if (zoneIDs.find(*j) == zoneIDs.end()) { |
| cerr << "Error: Nonexistent zone in country map: " << *j << endl; |
| return 1; |
| } |
| file << zoneIDs[*j]; // emit the zone's index number |
| } |
| file << " } //R#" << rc++ << endl; |
| } |
| file << " }" << endl; |
| |
| file << "}" << endl; |
| } |
| |
| file.close(); |
| |
| if (file) { // recheck error bit |
| cout << "Finished writing " ICU_TZ_RESOURCE ".txt" << endl; |
| } else { |
| cerr << "Error: Unable to open/write to " ICU_TZ_RESOURCE ".txt" << endl; |
| return 1; |
| } |
| |
| #define ICU4J_TZ_CLASS "ZoneMetaData" |
| |
| // Write out a Java source file containing only a few pieces of |
| // meta-data missing from the core JDK: the equivalency lists and |
| // the country map. |
| ofstream java(ICU4J_TZ_CLASS ".java"); |
| if (java) { |
| java << "//---------------------------------------------------------" << endl |
| << "// Copyright (C) 2003"; |
| if (thisYear > 2003) { |
| java << "-" << thisYear; |
| } |
| java << ", International Business Machines" << endl |
| << "// Corporation and others. All Rights Reserved." << endl |
| << "//---------------------------------------------------------" << endl |
| << "// Build tool: tz2icu" << endl |
| << "// Build date: " << asctime(now) /* << endl -- asctime emits CR */ |
| << "// Olson source: ftp://elsie.nci.nih.gov/pub/" << endl |
| << "// Olson version: " << version << endl |
| << "// ICU version: " << U_ICU_VERSION << endl |
| << "//---------------------------------------------------------" << endl |
| << "// >> !!! >> THIS IS A MACHINE-GENERATED FILE << !!! <<" << endl |
| << "// >> !!! >>> DO NOT EDIT <<< !!! <<" << endl |
| << "//---------------------------------------------------------" << endl |
| << endl |
| << "package com.ibm.icu.impl;" << endl |
| << endl |
| << "public final class " ICU4J_TZ_CLASS " {" << endl; |
| |
| // Emit equivalency lists |
| bool first1 = true; |
| java << " public static final String VERSION = \"" + version + "\";" << endl; |
| java << " public static final String[][] EQUIV = {" << endl; |
| for (ZoneMap::const_iterator i=ZONEINFO.begin(); i!=ZONEINFO.end(); ++i) { |
| if (i->second.isAlias() || i->second.getAliases().size() == 0) { |
| continue; |
| } |
| if (!first1) java << "," << endl; |
| first1 = false; |
| // The ID of this zone (the canonical zone, to which the |
| // aliases point) will be sorted into the list, so it |
| // won't be at position 0. If we want to know which is |
| // the canonical zone, we should move it to position 0. |
| java << " { "; |
| bool first2 = true; |
| const set<int32_t>& s = i->second.getAliases(); |
| for (set<int32_t>::const_iterator j=s.begin(); j!=s.end(); ++j) { |
| if (!first2) java << ", "; |
| java << '"' << zoneIDlist[*j] << '"'; |
| first2 = false; |
| } |
| java << " }"; |
| } |
| java << endl |
| << " };" << endl; |
| |
| // Emit country map. |
| first1 = true; |
| java << " public static final String[][] COUNTRY = {" << endl; |
| for (map<string, set<string> >::const_iterator i=countryMap.begin(); |
| i != countryMap.end(); ++i) { |
| if (!first1) java << "," << endl; |
| first1 = false; |
| string country = i->first; |
| const set<string>& zones(i->second); |
| java << " { \"" << country << '"'; |
| for (set<string>::const_iterator j=zones.begin(); |
| j != zones.end(); ++j) { |
| java << ", \"" << *j << '"'; |
| } |
| java << " }"; |
| } |
| java << endl |
| << " };" << endl; |
| |
| java << "}" << endl; |
| } |
| |
| java.close(); |
| |
| if (java) { // recheck error bit |
| cout << "Finished writing " ICU4J_TZ_CLASS ".java" << endl; |
| } else { |
| cerr << "Error: Unable to open/write to " ICU4J_TZ_CLASS ".java" << endl; |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| //eof |
