third_party/libaddressinput/chromium/cpp/src/address_ui.cc

   1 // Copyright (C) 2013 Google Inc.
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 // http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 #include <libaddressinput/address_ui.h>
  16
  17 #include <libaddressinput/address_field.h>
  18 #include <libaddressinput/address_ui_component.h>
  19
  20 #include <algorithm>
  21 #include <cassert>
  22 #include <cstddef>
  23 #include <set>
  24 #include <string>
  25 #include <vector>
  26
  27 #include "grit.h"
  28 #include "grit/libaddressinput_strings.h"
  29 #include "region_data_constants.h"
  30 #include "rule.h"
  31 #include "util/string_util.h"
  32
  33 namespace i18n {
  34 namespace addressinput {
  35
  36 namespace {
  37
  38 int GetMessageIdForField(AddressField field,
  39                          int admin_area_name_message_id,
  40                          int postal_code_name_message_id) {
  41   switch (field) {
  42     case COUNTRY:
  43       return IDS_LIBADDRESSINPUT_I18N_COUNTRY_LABEL;
  44     case ADMIN_AREA:
  45       return admin_area_name_message_id;
  46     case LOCALITY:
  47       return IDS_LIBADDRESSINPUT_I18N_LOCALITY_LABEL;
  48     case DEPENDENT_LOCALITY:
  49       return IDS_LIBADDRESSINPUT_I18N_DEPENDENT_LOCALITY_LABEL;
  50     case SORTING_CODE:
  51       return IDS_LIBADDRESSINPUT_I18N_CEDEX_LABEL;
  52     case POSTAL_CODE:
  53       return postal_code_name_message_id;
  54     case STREET_ADDRESS:
  55       return IDS_LIBADDRESSINPUT_I18N_ADDRESS_LINE1_LABEL;
  56     case ORGANIZATION:
  57       return IDS_LIBADDRESSINPUT_I18N_ORGANIZATION_LABEL;
  58     case RECIPIENT:
  59       return IDS_LIBADDRESSINPUT_I18N_RECIPIENT_LABEL;
  60     default:
  61       return INVALID_MESSAGE_ID;
  62   }
  63 }
  64
  65 // Returns the BCP 47 language code that should be used to format the address
  66 // that the user entered.
  67 //
  68 // If the rule does not contain information about languages, then returns the
  69 // UI language.
  70 //
  71 // If the UI language is either the default language for the country, one of the
  72 // languages for rules, or one of the languages for address input, then returns
  73 // this UI language. If there're no matches, then picks one of the languages in
  74 // the rule and returns it.
  75 //
  76 // If latinized rules are available and the UI language code is not the primary
  77 // language code for this region, then returns the primary language with "-latn"
  78 // appended.
  79 std::string GetComponentsLanguageCode(const Rule& rule,
  80                                       const std::string& ui_language_code) {
  81   // Select the default language code for the region.
  82   std::string default_language_code;
  83   if (!rule.GetLanguage().empty()) {
  84     default_language_code = rule.GetLanguage();
  85   } else if (!rule.GetLanguages().empty()) {
  86     default_language_code = rule.GetLanguages()[0];
  87   } else if (!rule.GetInputLanguages().empty()) {
  88     default_language_code = rule.GetInputLanguages()[0];
  89   } else {
  90     // Region does not have any language information (e.g. Antarctica). Use the
  91     // UI language code as is.
  92     return ui_language_code;
  93   }
  94
  95   // If the UI language code is not set, then use default language code.
  96   if (ui_language_code.empty()) {
  97     return default_language_code;
  98   }
  99
 100   const std::string& normalized_ui_language_code =
 101       NormalizeLanguageCode(ui_language_code);
 102   const std::string& normalized_default_language_code =
 103       NormalizeLanguageCode(default_language_code);
 104
 105   // Check whether UI language code matches any language codes in the rule,
 106   // normalized or as is.
 107   if (normalized_default_language_code == normalized_ui_language_code ||
 108       std::find(
 109           rule.GetLanguages().begin(),
 110           rule.GetLanguages().end(),
 111           ui_language_code) != rule.GetLanguages().end() ||
 112       std::find(
 113           rule.GetLanguages().begin(),
 114           rule.GetLanguages().end(),
 115           normalized_ui_language_code) != rule.GetLanguages().end() ||
 116       std::find(
 117           rule.GetInputLanguages().begin(),
 118           rule.GetInputLanguages().end(),
 119           ui_language_code) != rule.GetInputLanguages().end() ||
 120       std::find(
 121           rule.GetInputLanguages().begin(),
 122           rule.GetInputLanguages().end(),
 123           normalized_ui_language_code) != rule.GetInputLanguages().end()) {
 124     return ui_language_code;
 125   }
 126
 127   // The UI language code does not match any language information in the rule.
 128   return rule.GetLatinFormat().empty()
 129              ? default_language_code
 130              : normalized_default_language_code + "-latn";
 131 }
 132
 133 }  // namespace
 134
 135 const std::vector<std::string>& GetRegionCodes() {
 136   return RegionDataConstants::GetRegionCodes();
 137 }
 138
 139 std::vector<AddressUiComponent> BuildComponents(
 140     const std::string& region_code,
 141     const std::string& ui_language_code,
 142     std::string* components_language_code) {
 143   std::vector<AddressUiComponent> result;
 144
 145   Rule rule;
 146   rule.CopyFrom(Rule::GetDefault());
 147   if (!rule.ParseSerializedRule(
 148            RegionDataConstants::GetRegionData(region_code))) {
 149     return result;
 150   }
 151
 152   if (components_language_code != NULL) {
 153     *components_language_code =
 154         GetComponentsLanguageCode(rule, ui_language_code);
 155   }
 156
 157   // For avoiding showing an input field twice, when the field is displayed
 158   // twice on an envelope.
 159   std::set<AddressField> fields;
 160
 161   // If latinized rules are available and the |ui_language_code| is not the
 162   // primary language code for the region, then use the latinized formatting
 163   // rules.
 164   const std::vector<std::vector<FormatElement> >& format =
 165       rule.GetLatinFormat().empty() ||
 166       ui_language_code.empty() ||
 167       NormalizeLanguageCode(ui_language_code) ==
 168           NormalizeLanguageCode(rule.GetLanguage())
 169               ? rule.GetFormat() : rule.GetLatinFormat();
 170
 171   for (std::vector<std::vector<FormatElement> >::const_iterator
 172            line_it = format.begin();
 173        line_it != format.end();
 174        ++line_it) {
 175     int num_fields_this_row = 0;
 176     for (std::vector<FormatElement>::const_iterator element_it =
 177              line_it->begin();
 178          element_it != line_it->end();
 179          ++element_it) {
 180       if (element_it->IsField()) {
 181         ++num_fields_this_row;
 182       }
 183     }
 184
 185     for (std::vector<FormatElement>::const_iterator element_it =
 186              line_it->begin();
 187          element_it != line_it->end();
 188          ++element_it) {
 189       AddressField field = element_it->field;
 190       if (!element_it->IsField() || fields.find(field) != fields.end()) {
 191         continue;
 192       }
 193       fields.insert(field);
 194
 195       AddressUiComponent component;
 196       component.length_hint =
 197           num_fields_this_row == 1 ? AddressUiComponent::HINT_LONG
 198                                    : AddressUiComponent::HINT_SHORT;
 199       component.field = field;
 200       component.name_id =
 201           GetMessageIdForField(field,
 202                                rule.GetAdminAreaNameMessageId(),
 203                                rule.GetPostalCodeNameMessageId());
 204       result.push_back(component);
 205     }
 206   }
 207
 208   return result;
 209 }
 210
 211 std::vector<AddressField> GetRequiredFields(const std::string& region_code) {
 212   Rule rule;
 213   rule.CopyFrom(Rule::GetDefault());
 214   if (!rule.ParseSerializedRule(
 215            RegionDataConstants::GetRegionData(region_code))) {
 216     return std::vector<AddressField>();
 217   }
 218
 219   return rule.GetRequired();
 220 }
 221
 222 const std::string& GetCompactAddressLinesSeparator(
 223     const std::string& language_code) {
 224   return RegionDataConstants::GetLanguageCompactLineSeparator(language_code);
 225 }
 226
 227 }  // namespace addressinput
 228 }  // namespace i18n