Index: components/autofill/core/common/autofill_util.cc |
diff --git a/components/autofill/core/common/autofill_util.cc b/components/autofill/core/common/autofill_util.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b6df9d5f51690e910e81371ef93cd71c0ee1a0f4 |
--- /dev/null |
+++ b/components/autofill/core/common/autofill_util.cc |
@@ -0,0 +1,76 @@ |
+// Copyright 2015 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. |
+ |
+#include "components/autofill/core/common/autofill_util.h" |
+ |
+#include <algorithm> |
+#include <vector> |
+ |
+#include "base/command_line.h" |
+#include "base/i18n/case_conversion.h" |
+#include "base/strings/string_piece.h" |
+#include "base/strings/string_split.h" |
+#include "base/strings/string_util.h" |
+#include "base/strings/utf_string_conversions.h" |
+#include "components/autofill/core/common/autofill_switches.h" |
+ |
+namespace autofill { |
+ |
+namespace { |
+ |
+template <typename Char> |
+struct Compare { |
+ Compare(bool case_sensitive) : case_sensitive_(case_sensitive) {} |
+ bool operator()(Char x, Char y) const { |
+ return case_sensitive_ ? (x == y) : (tolower(x) == tolower(y)); |
+ } |
+ |
+ private: |
+ bool case_sensitive_; |
+}; |
+ |
+} // namespace |
+ |
+static const char kSplitCharacters[] = " .,-_@"; |
+ |
+bool IsFeatureSubstringMatchEnabled() { |
+ return base::CommandLine::ForCurrentProcess()->HasSwitch( |
+ switches::kEnableSuggestionsWithSubstringMatch); |
+} |
+ |
+bool ContainsTokenThatStartsWith(const base::string16& suggestion, |
+ const base::string16& field_contents, |
+ bool case_sensitive) { |
+ return IsFeatureSubstringMatchEnabled() && |
+ suggestion.length() >= field_contents.length() && |
+ GetTextSelectionStart(suggestion, field_contents, case_sensitive) != |
+ base::string16::npos; |
+} |
+ |
+size_t GetTextSelectionStart(const base::string16& suggestion, |
+ const base::string16& field_contents, |
+ bool case_sensitive) { |
+ // Loop until we find either the |field_contents| is a prefix of |suggestion| |
+ // or character right before the match is one of the splitting characters. |
+ for (base::string16::const_iterator it = suggestion.begin(); |
+ (it = std::search( |
+ it, suggestion.end(), field_contents.begin(), field_contents.end(), |
+ Compare<base::string16::value_type>(case_sensitive))) != |
please use gerrit instead
2015/07/03 02:05:43
case_sensitive ? Compare<...>() : base::CaseInsens
Pritam Nikam
2015/07/03 16:21:27
This will not compile.
In that case, how about:
please use gerrit instead
2015/07/03 22:05:47
Looks good.
|
+ suggestion.end(); |
+ ++it) { |
+ static const base::string16 split_chars( |
please use gerrit instead
2015/07/03 02:05:43
1) No need to make it static.
2) Constants are nam
Pritam Nikam
2015/07/03 16:21:27
Done.
|
+ base::ASCIIToUTF16(kSplitCharacters)); |
+ if (it == suggestion.begin() || |
+ split_chars.find(*(it - 1)) != std::string::npos) { |
+ // Returns the character position right after the |field_contents| within |
+ // |suggestion| text as a caret position for text selection. |
+ return it - suggestion.begin() + field_contents.size(); |
+ } |
+ } |
+ |
+ // Unable to find the |field_contents| in |suggestion| text. |
+ return base::string16::npos; |
+} |
+ |
+} // namespace autofill |