Embed address normalization rewriting rules.

components/autofill/core/browser/address_rewriter.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_
+#define COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_
+
+#include "base/strings/string16.h"
+#include "base/strings/string_piece.h"
+#include "base/strings/string_util.h"
+
+namespace autofill {
+
+// A class to apply address normalization rewriting rules to strings. This
+// class is a wrapper to a handle for a set of cached rules. As such, it is
+// copyable, movable, and passable by value.
+class AddressRewriter {
+ public:
+  // Get an AddressRewrite instance which applies the rules for |country_code|.
+  static AddressRewriter ForCountryCode(const base::string16& country_code);
+
+  // Apply the rewrite rules to |text| and return the result.
+  base::string16 Rewrite(const base::string16& text) const;
+
+ private:
+  // A handle to the internal rewrite rules this instance is using.
+  const void* impl_ = nullptr;
+};
+
+// Implementation details follow. Not part of the public interface.
+namespace internal {
+
+// The structure used to statically define a rule.
+struct Rule {
+  const char* pattern;
+  const char* rewrite;
+};
+
+// The structure used to statically define a set of rules for a region.
+struct RegionInfo {
+  const char* region;
+  const Rule* rules;
+  size_t num_rules;
+
+  bool operator<(const base::StringPiece& region) const {
+    return base::CompareCaseInsensitiveASCII(this->region, region) < 0;
+  }
+
+  bool operator==(const base::StringPiece& region) const {
+    return base::EqualsCaseInsensitiveASCII(this->region, region);
+  }
+};
+
+// The statically defined rule table, sorted by region.
+extern const internal::RegionInfo kRuleTable[];
+
+// The size (in records) of the statically defined rule table.
+extern const size_t kRuleTableSize;
+
+}  // namespace internal
+
+}  // namespace autofill
+
+#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_ADDRESS_REWRITER_H_