Create a new component "autocomplete"

chrome/browser/autocomplete/url_prefix.h

-// Copyright (c) 2012 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 CHROME_BROWSER_AUTOCOMPLETE_URL_PREFIX_H_
-#define CHROME_BROWSER_AUTOCOMPLETE_URL_PREFIX_H_
-
-#include <vector>
-
-#include "base/strings/string16.h"
-
-struct URLPrefix;
-typedef std::vector<URLPrefix> URLPrefixes;
-
-// A URL prefix; combinations of schemes and (least significant) domain labels
-// that may be inferred from certain URL-like input strings.
-struct URLPrefix {
-  URLPrefix(const base::string16& prefix, size_t num_components);
-
-  // Returns a vector of URL prefixes sorted by descending number of components.
-  static const URLPrefixes& GetURLPrefixes();
-
-  // Returns if the argument is a valid URL prefix.
-  static bool IsURLPrefix(const base::string16& prefix);
-
-  // Returns the URL prefix of |text| with the most components, or NULL.
-  // |prefix_suffix| (which may be empty) is appended to every attempted prefix,
-  // which is useful for finding the innermost match of user input in a URL.
-  // Performs case insensitive string comparison.
-  static const URLPrefix* BestURLPrefix(const base::string16& text,
-                                        const base::string16& prefix_suffix);
-
-  // A helper function for BestURLPrefix().  Returns true if |text| starts
-  // with |prefix| which is then followed by |prefix_suffix|.
-  // Performs case insensitive string comparison.
-  static bool PrefixMatch(const URLPrefix& prefix,
-                          const base::string16& text,
-                          const base::string16& prefix_suffix);
-
-  // Sees if |text| is inlineable against either |input| or |fixed_up_input|,
-  // returning the appropriate inline autocomplete offset or
-  // base::string16::npos if |text| is not inlineable.
-  // |allow_www_prefix_without_scheme| says whether to consider an input such
-  // as "foo" to be allowed to match against text "www.foo.com".  This is
-  // needed because sometimes the string we're matching against here can come
-  // from a match's fill_into_edit, which can start with "www." without having
-  // a protocol at the beginning, and we want to allow these matches to be
-  // inlineable.  ("www." is not otherwise on the default prefix list.)
-  static size_t GetInlineAutocompleteOffset(
-      const base::string16& input,
-      const base::string16& fixed_up_input,
-      const bool allow_www_prefix_without_scheme,
-      const base::string16& text);
-
-  base::string16 prefix;
-
-  // The number of URL components (scheme, domain label, etc.) in the prefix.
-  // For example, "http://foo.com" and "www.bar.com" each have one component,
-  // while "ftp://ftp.ftp.com" has two, and "mysite.com" has none.
-  size_t num_components;
-};
-
-#endif  // CHROME_BROWSER_AUTOCOMPLETE_URL_PREFIX_H_