Reland of "Use address_data.h from upstream libaddressinput".

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

+// Copyright (C) 2014 Google Inc.
+//
+// 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.
+
+#include <libaddressinput/address_formatter.h>
+
+#include <libaddressinput/address_data.h>
+#include <libaddressinput/address_field.h>
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <functional>
+#include <string>
+#include <vector>
+
+#include "language.h"
+#include "region_data_constants.h"
+#include "rule.h"
+#include "util/cctype_tolower_equal.h"
+
+namespace i18n {
+namespace addressinput {
+
+namespace {
+
+const char kCommaSeparator[] = ", ";
+const char kSpaceSeparator[] = " ";
+const char kArabicCommaSeparator[] = "\xD8\x8C" " ";  /* "، " */
+
+const char* kLanguagesThatUseSpace[] = {
+  "th",
+  "ko"
+};
+
+const char* kLanguagesThatHaveNoSeparator[] = {
+  "ja",
+  "zh"  // All Chinese variants.
+};
+
+// This data is based on CLDR, for languages that are in official use in some
+// country, where Arabic is the most likely script tag.
+// TODO: Consider supporting variants such as tr-Arab by detecting the script
+// code.
+const char* kLanguagesThatUseAnArabicComma[] = {
+  "ar",
+  "az",
+  "fa",
+  "kk",
+  "ku",
+  "ky",
+  "ps",
+  "tg",
+  "tk",
+  "ur",
+  "uz"
+};
+
+std::string GetLineSeparatorForLanguage(const std::string& language_tag) {
+  Language address_language(language_tag);
+
+  // First deal with explicit script tags.
+  if (address_language.has_latin_script) {
+    return kCommaSeparator;
+  }
+
+  // Now guess something appropriate based on the base language.
+  const std::string& base_language = address_language.base;
+  if (std::find_if(kLanguagesThatUseSpace,
+                   kLanguagesThatUseSpace + arraysize(kLanguagesThatUseSpace),
+                   std::bind2nd(EqualToTolowerString(), base_language)) !=
+      kLanguagesThatUseSpace + arraysize(kLanguagesThatUseSpace)) {
+    return kSpaceSeparator;
+  } else if (std::find_if(
+                 kLanguagesThatHaveNoSeparator,
+                 kLanguagesThatHaveNoSeparator +
+                     arraysize(kLanguagesThatHaveNoSeparator),
+                 std::bind2nd(EqualToTolowerString(), base_language)) !=
+             kLanguagesThatHaveNoSeparator +
+                 arraysize(kLanguagesThatHaveNoSeparator)) {
+    return "";
+  } else if (std::find_if(
+                 kLanguagesThatUseAnArabicComma,
+                 kLanguagesThatUseAnArabicComma +
+                     arraysize(kLanguagesThatUseAnArabicComma),
+                 std::bind2nd(EqualToTolowerString(), base_language)) !=
+             kLanguagesThatUseAnArabicComma +
+                 arraysize(kLanguagesThatUseAnArabicComma)) {
+    return kArabicCommaSeparator;
+  }
+  // Either the language is a latin-script language, or no language was
+  // specified. In the latter case we still return ", " as the most common
+  // separator in use. In countries that don't use this, e.g. Thailand,
+  // addresses are often written in latin script where this would still be
+  // appropriate, so this is a reasonable default in the absence of information.
+  return kCommaSeparator;
+}
+
+void CombineLinesForLanguage(
+    const std::vector<std::string>& lines, const std::string& language_tag,
+    std::string *line) {
+  if (lines.size() > 0) {
+    line->assign(lines[0]);
+  }
+  std::string separator = GetLineSeparatorForLanguage(language_tag);
+  for (std::vector<std::string>::const_iterator it = lines.begin() + 1;
+       it < lines.end(); ++it) {
+    line->append(separator);
+    line->append(*it);
+  }
+}
+
+}  // namespace
+
+void GetFormattedNationalAddress(
+    const AddressData& address_data, std::vector<std::string>* lines) {
+  assert(lines != NULL);
+  lines->clear();
+
+  Rule rule;
+  rule.CopyFrom(Rule::GetDefault());
+  // TODO: Eventually, we should get the best rule for this country and
+  // language, rather than just for the country.
+  rule.ParseSerializedRule(RegionDataConstants::GetRegionData(
+      address_data.region_code));
+
+  Language language(address_data.language_code);
+
+  // If latinized rules are available and the |language_code| of this address is
+  // explicitly tagged as being Latin, then use the latinized formatting rules.
+  const std::vector<std::vector<FormatElement> >& format =
+      language.has_latin_script && !rule.GetLatinFormat().empty()
+          ? rule.GetLatinFormat() : rule.GetFormat();
+
+  lines->push_back(std::string());
+  for (size_t i = 0; i < format.size(); ++i) {
+    if (!lines->back().empty()) {
+      lines->push_back(std::string());
+    }
+    for (size_t j = 0; j < format[i].size(); ++j) {
+      const FormatElement& element = format[i][j];
+      if (element.IsField()) {
+        if (element.field == STREET_ADDRESS) {
+          // The field "street address" represents the street address lines of
+          // an address, so there can be multiple values.
+          if (lines->back().empty()) {
+            lines->pop_back();
+          }
+          lines->insert(lines->end(),
+                        address_data.address_line.begin(),
+                        address_data.address_line.end());
+        } else {
+          lines->back().append(address_data.GetFieldValue(element.field));
+        }
+      } else {
+        lines->back().append(element.literal);
+      }
+    }
+  }
+
+  if (lines->back().empty()) {
+    lines->pop_back();
+  }
+}
+
+void GetFormattedNationalAddressLine(
+    const AddressData& address_data, std::string* line) {
+  std::vector<std::string> address_lines;
+  GetFormattedNationalAddress(address_data, &address_lines);
+  CombineLinesForLanguage(address_lines, address_data.language_code, line);
+}
+
+void GetStreetAddressLinesAsSingleLine(
+    const AddressData& address_data, std::string* line) {
+  CombineLinesForLanguage(
+      address_data.address_line, address_data.language_code, line);
+}
+
+}  // namespace addressinput
+}  // namespace i18n