10f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Copyright 2013 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 50f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)#include "chrome/browser/chromeos/system/timezone_util.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/i18n/rtl.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/lazy_instance.h" 11868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string_util.h" 12868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/stringprintf.h" 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/synchronization/lock.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/values.h" 164e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "chromeos/settings/timezone_settings.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "grit/generated_resources.h" 18ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "third_party/icu/source/common/unicode/ures.h" 19ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "third_party/icu/source/common/unicode/utypes.h" 20ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "third_party/icu/source/i18n/unicode/calendar.h" 21ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "third_party/icu/source/i18n/unicode/timezone.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/l10n/l10n_util.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct UResClose { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) inline void operator() (UResourceBundle* b) const { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ures_close(b); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static base::LazyInstance<base::Lock>::Leaky 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_timezone_bundle_lock = LAZY_INSTANCE_INITIALIZER; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Returns an exemplary city in the given timezone. 365d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)base::string16 GetExemplarCity(const icu::TimeZone& zone) { 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(jungshik): After upgrading to ICU 4.6, use U_ICUDATA_ZONE 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char* zone_bundle_name = NULL; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // These will be leaked at the end. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static UResourceBundle *zone_bundle = NULL; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static UResourceBundle *zone_strings = NULL; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UErrorCode status = U_ZERO_ERROR; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::AutoLock lock(g_timezone_bundle_lock.Get()); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (zone_bundle == NULL) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) zone_bundle = ures_open(zone_bundle_name, uloc_getDefault(), &status); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (zone_strings == NULL) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) zone_strings = ures_getByKey(zone_bundle, "zone_strings", NULL, &status); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::UnicodeString zone_id; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) zone.getID(zone_id); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string zone_id_str; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) zone_id.toUTF8String(zone_id_str); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resource keys for timezones use ':' in place of '/'. 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceSubstringsAfterOffset(&zone_id_str, 0, "/", ":"); 615d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scoped_ptr<UResourceBundle, UResClose> zone_item( 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ures_getByKey(zone_strings, zone_id_str.c_str(), NULL, &status)); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::UnicodeString city; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!U_FAILURE(status)) { 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) city = icu::ures_getUnicodeStringByKey(zone_item.get(), "ec", &status); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (U_SUCCESS(status)) 67a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return base::string16(city.getBuffer(), city.length()); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Fallback case in case of failure. 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceSubstringsAfterOffset(&zone_id_str, 0, ":", "/"); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Take the last component of a timezone id (e.g. 'Baz' in 'Foo/Bar/Baz'). 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Depending on timezones, keeping all but the 1st component 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (e.g. Bar/Baz) may be better, but our current list does not have 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // any timezone for which that's the case. 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string::size_type slash_pos = zone_id_str.rfind('/'); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (slash_pos != std::string::npos && slash_pos < zone_id_str.size()) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) zone_id_str.erase(0, slash_pos + 1); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // zone id has '_' in place of ' '. 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceSubstringsAfterOffset(&zone_id_str, 0, "_", " "); 815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return base::ASCIIToUTF16(zone_id_str); 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Gets the given timezone's name for visualization. 855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)base::string16 GetTimezoneName(const icu::TimeZone& timezone) { 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Instead of using the raw_offset, use the offset in effect now. 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For instance, US Pacific Time, the offset shown will be -7 in summer 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // while it'll be -8 in winter. 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int raw_offset, dst_offset; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UDate now = icu::Calendar::getNow(); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UErrorCode status = U_ZERO_ERROR; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) timezone.getOffset(now, false, raw_offset, dst_offset, status); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(U_SUCCESS(status)); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int offset = raw_offset + dst_offset; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |offset| is in msec. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int minute_offset = std::abs(offset) / 60000; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int hour_offset = minute_offset / 60; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int min_remainder = minute_offset % 60; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Some timezones have a non-integral hour offset. So, we need to use hh:mm 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // form. 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string offset_str = base::StringPrintf(offset >= 0 ? 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "UTC+%d:%02d" : "UTC-%d:%02d", hour_offset, min_remainder); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(jungshik): When coming up with a better list of timezones, we also 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // have to come up with better 'display' names. One possibility is to list 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // multiple cities (e.g. "Los Angeles, Vancouver .." in the order of 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the population of a country the city belongs to.). 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We can also think of using LONG_GENERIC or LOCATION once we upgrade 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to ICU 4.6. 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // In the meantime, we use "LONG" name with "Exemplar City" to distinguish 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // multiple timezones with the same "LONG" name but with different 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // rules (e.g. US Mountain Time in Denver vs Phoenix). 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::UnicodeString name; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) timezone.getDisplayName(dst_offset != 0, icu::TimeZone::LONG, name); 115a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) base::string16 result(l10n_util::GetStringFUTF16( 1165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) IDS_OPTIONS_SETTINGS_TIMEZONE_DISPLAY_TEMPLATE, 1175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::ASCIIToUTF16(offset_str), 1185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::string16(name.getBuffer(), name.length()), 1195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetExemplarCity(timezone))); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::i18n::AdjustStringForLocaleDirection(&result); 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return result; 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1260f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)namespace chromeos { 1270f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)namespace system { 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Creates a list of pairs of each timezone's ID and name. 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)scoped_ptr<base::ListValue> GetTimezoneList() { 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::vector<icu::TimeZone*> &timezones = 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chromeos::system::TimezoneSettings::GetInstance()->GetTimezoneList(); 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<base::ListValue> timezoneList(new base::ListValue()); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (std::vector<icu::TimeZone*>::const_iterator iter = timezones.begin(); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iter != timezones.end(); ++iter) { 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const icu::TimeZone* timezone = *iter; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::ListValue* option = new base::ListValue(); 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) option->Append(new base::StringValue( 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chromeos::system::TimezoneSettings::GetTimezoneID(*timezone))); 1402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) option->Append(new base::StringValue(GetTimezoneName(*timezone))); 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) timezoneList->Append(option); 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return timezoneList.Pass(); 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1460f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)} // namespace system 1470f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)} // namespace chromeos 148