1 files changed, 216 insertions, 0 deletions
diff --git a/geocoding/phonenumber_offline_geocoder.cc b/geocoding/phonenumber_offline_geocoder.cc
new file mode 100644
index 0000000..9eac002
--- /dev/null
+++ b/geocoding/phonenumber_offline_geocoder.cc
@@ -0,0 +1,216 @@
+// Copyright (C) 2012 The Libphonenumber Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Author: Patrick Mezard
+
+#include "phonenumbers/geocoding/phonenumber_offline_geocoder.h"
+
+#include <algorithm>
+#include <map>
+#include <string>
+
+#include <unicode/unistr.h>  // NOLINT(build/include_order)
+
+#include "phonenumbers/geocoding/area_code_map.h"
+#include "phonenumbers/geocoding/geocoding_data.h"
+#include "phonenumbers/geocoding/mapping_file_provider.h"
+#include "phonenumbers/phonenumberutil.h"
+#include "phonenumbers/stl_util.h"
+
+namespace i18n {
+namespace phonenumbers {
+
+using icu::UnicodeString;
+using std::map;
+using std::string;
+
+namespace {
+
+// Returns true if s1 comes strictly before s2 in lexicographic order.
+bool IsLowerThan(const char* s1, const char* s2) {
+  return strcmp(s1, s2) < 0;
+}
+
+}  // namespace
+
+PhoneNumberOfflineGeocoder::PhoneNumberOfflineGeocoder() {
+  Init(get_country_calling_codes(), get_country_calling_codes_size(),
+       get_country_languages, get_prefix_language_code_pairs(),
+       get_prefix_language_code_pairs_size(), get_prefix_descriptions);
+}
+
+PhoneNumberOfflineGeocoder::PhoneNumberOfflineGeocoder(
+    const int* country_calling_codes, int country_calling_codes_size,
+    country_languages_getter get_country_languages,
+    const char** prefix_language_code_pairs,
+    int prefix_language_code_pairs_size,
+    prefix_descriptions_getter get_prefix_descriptions) {
+  Init(country_calling_codes, country_calling_codes_size,
+       get_country_languages, prefix_language_code_pairs,
+       prefix_language_code_pairs_size, get_prefix_descriptions);
+}
+
+void PhoneNumberOfflineGeocoder::Init(
+    const int* country_calling_codes, int country_calling_codes_size,
+    country_languages_getter get_country_languages,
+    const char** prefix_language_code_pairs,
+    int prefix_language_code_pairs_size,
+    prefix_descriptions_getter get_prefix_descriptions) {
+  phone_util_ = PhoneNumberUtil::GetInstance();
+  provider_.reset(new MappingFileProvider(country_calling_codes,
+                                          country_calling_codes_size,
+                                          get_country_languages));
+  prefix_language_code_pairs_ = prefix_language_code_pairs;
+  prefix_language_code_pairs_size_ = prefix_language_code_pairs_size;
+  get_prefix_descriptions_ = get_prefix_descriptions;
+}
+
+PhoneNumberOfflineGeocoder::~PhoneNumberOfflineGeocoder() {
+  STLDeleteContainerPairSecondPointers(
+      available_maps_.begin(), available_maps_.end());
+}
+
+const AreaCodeMap* PhoneNumberOfflineGeocoder::GetPhonePrefixDescriptions(
+    int prefix, const string& language, const string& script,
+    const string& region) const {
+  string filename;
+  provider_->GetFileName(prefix, language, script, region, &filename);
+  if (filename.empty()) {
+    return NULL;
+  }
+  AreaCodeMaps::const_iterator it = available_maps_.find(filename);
+  if (it == available_maps_.end()) {
+    it = LoadAreaCodeMapFromFile(filename);
+    if (it == available_maps_.end()) {
+      return NULL;
+    }
+  }
+  return it->second;
+}
+
+PhoneNumberOfflineGeocoder::AreaCodeMaps::const_iterator
+PhoneNumberOfflineGeocoder::LoadAreaCodeMapFromFile(
+    const string& filename) const {
+  const char** const prefix_language_code_pairs_end =
+      prefix_language_code_pairs_ + prefix_language_code_pairs_size_;
+  const char** const prefix_language_code_pair =
+      std::lower_bound(prefix_language_code_pairs_,
+                       prefix_language_code_pairs_end,
+                       filename.c_str(), IsLowerThan);
+  if (prefix_language_code_pair != prefix_language_code_pairs_end &&
+      filename.compare(*prefix_language_code_pair) == 0) {
+    AreaCodeMap* const m = new AreaCodeMap();
+    m->ReadAreaCodeMap(get_prefix_descriptions_(
+            prefix_language_code_pair - prefix_language_code_pairs_));
+    return available_maps_.insert(AreaCodeMaps::value_type(filename, m)).first;
+  }
+  return available_maps_.end();
+}
+
+string PhoneNumberOfflineGeocoder::GetCountryNameForNumber(
+    const PhoneNumber& number, const Locale& language) const {
+  string region_code;
+  phone_util_->GetRegionCodeForNumber(number, &region_code);
+  return GetRegionDisplayName(&region_code, language);
+}
+
+string PhoneNumberOfflineGeocoder::GetRegionDisplayName(
+    const string* region_code, const Locale& language) const {
+  if (region_code == NULL || region_code->compare("ZZ") == 0 ||
+      region_code->compare(
+         PhoneNumberUtil::kRegionCodeForNonGeoEntity) == 0) {
+    return "";
+  }
+  UnicodeString udisplay_country;
+  icu::Locale("", region_code->c_str()).getDisplayCountry(
+      language, udisplay_country);
+  string display_country;
+  udisplay_country.toUTF8String(display_country);
+  return display_country;
+}
+
+string PhoneNumberOfflineGeocoder::GetDescriptionForValidNumber(
+    const PhoneNumber& number, const Locale& language) const {
+  const char* const description = GetAreaDescription(
+      number, language.getLanguage(), "", language.getCountry());
+  return *description != '\0'
+        ? description
+        : GetCountryNameForNumber(number, language);
+}
+
+string PhoneNumberOfflineGeocoder::GetDescriptionForValidNumber(
+    const PhoneNumber& number, const Locale& language,
+    const string& user_region) const {
+  // If the user region matches the number's region, then we just show the
+  // lower-level description, if one exists - if no description exists, we will
+  // show the region(country) name for the number.
+  string region_code;
+  phone_util_->GetRegionCodeForNumber(number, &region_code);
+  if (user_region.compare(region_code) == 0) {
+    return GetDescriptionForValidNumber(number, language);
+  }
+  // Otherwise, we just show the region(country) name for now.
+  return GetRegionDisplayName(&region_code, language);
+}
+
+string PhoneNumberOfflineGeocoder::GetDescriptionForNumber(
+    const PhoneNumber& number, const Locale& locale) const {
+  if (!phone_util_->IsValidNumber(number)) {
+    return "";
+  }
+  return GetDescriptionForValidNumber(number, locale);
+}
+
+string PhoneNumberOfflineGeocoder::GetDescriptionForNumber(
+    const PhoneNumber& number, const Locale& language,
+    const string& user_region) const {
+  if (!phone_util_->IsValidNumber(number)) {
+    return "";
+  }
+  return GetDescriptionForValidNumber(number, language, user_region);
+}
+
+const char* PhoneNumberOfflineGeocoder::GetAreaDescription(
+    const PhoneNumber& number, const string& lang, const string& script,
+    const string& region) const {
+  const int country_calling_code = number.country_code();
+  // NANPA area is not split in C++ code.
+  const int phone_prefix = country_calling_code;
+  const AreaCodeMap* const descriptions = GetPhonePrefixDescriptions(
+      phone_prefix, lang, script, region);
+  const char* description = descriptions ? descriptions->Lookup(number) : NULL;
+  // When a location is not available in the requested language, fall back to
+  // English.
+  if ((!description || *description == '\0') && MayFallBackToEnglish(lang)) {
+    const AreaCodeMap* default_descriptions = GetPhonePrefixDescriptions(
+        phone_prefix, "en", "", "");
+    if (!default_descriptions) {
+      return "";
+    }
+    description = default_descriptions->Lookup(number);
+  }
+  return description ? description : "";
+}
+
+// Don't fall back to English if the requested language is among the following:
+// - Chinese
+// - Japanese
+// - Korean
+bool PhoneNumberOfflineGeocoder::MayFallBackToEnglish(
+    const string& lang) const {
+  return lang.compare("zh") && lang.compare("ja") && lang.compare("ko");
+}
+
+}  // namespace phonenumbers
+}  // namespace i18n