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// 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_normalizer.h>
#include <libaddressinput/address_data.h>
#include <libaddressinput/address_field.h>
#include <libaddressinput/preload_supplier.h>
#include <cassert>
#include <cstddef>
#include <string>
#include <vector>
#include "lookup_key.h"
#include "rule.h"
#include "util/size.h"
#include "util/string_compare.h"
namespace i18n {
namespace addressinput {
AddressNormalizer::AddressNormalizer(const PreloadSupplier* supplier)
: supplier_(supplier),
compare_(new StringCompare) {
assert(supplier_ != nullptr);
}
AddressNormalizer::~AddressNormalizer() = default;
void AddressNormalizer::Normalize(AddressData* address) const {
assert(address != nullptr);
assert(supplier_->IsLoaded(address->region_code));
AddressData region_address;
region_address.region_code = address->region_code;
LookupKey parent_key;
parent_key.FromAddress(region_address);
const Rule* parent_rule = supplier_->GetRule(parent_key);
// Since we only set the |region_code| in the |region_address|, and the rule
// for the |region_code| is already loaded, |parent_rule| should not be null.
assert(parent_rule != nullptr);
std::vector<std::string> languages(parent_rule->GetLanguages());
if (languages.empty()) {
languages.emplace_back("");
} else {
languages[0] = ""; // The default language doesn't need a tag on the id.
}
LookupKey lookup_key;
for (size_t depth = 1; depth < size(LookupKey::kHierarchy); ++depth) {
AddressField field = LookupKey::kHierarchy[depth];
if (address->IsFieldEmpty(field)) {
return;
}
const std::string& field_value = address->GetFieldValue(field);
bool no_match_found_yet = true;
for (const auto& sub_key : parent_rule->GetSubKeys()) {
if (!no_match_found_yet) {
break;
}
for (const std::string& language_tag : languages) {
lookup_key.set_language(language_tag);
lookup_key.FromLookupKey(parent_key, sub_key);
const Rule* rule = supplier_->GetRule(lookup_key);
// A rule with key = sub_key and specified language_tag was expected to
// be found in a certain format (e.g. data/CA/QC--fr), but it was not.
// This is due to a possible inconsistency in the data format.
if (rule == nullptr) continue;
bool matches_latin_name =
compare_->NaturalEquals(field_value, rule->GetLatinName());
bool matches_local_name_id =
compare_->NaturalEquals(field_value, sub_key) ||
compare_->NaturalEquals(field_value, rule->GetName());
if (matches_latin_name || matches_local_name_id) {
address->SetFieldValue(
field, matches_latin_name ? rule->GetLatinName() : sub_key);
no_match_found_yet = false;
parent_key.FromLookupKey(parent_key, sub_key);
parent_rule = supplier_->GetRule(parent_key);
assert(parent_rule != nullptr);
break;
}
}
}
if (no_match_found_yet) {
return; // Abort search.
}
}
}
} // namespace addressinput
} // namespace i18n