1eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// Copyright 2013 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "components/autofill/core/browser/autofill_regexes.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <map> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utility> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/singleton.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/stl_util.h" 14868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string16.h" 15ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "third_party/icu/source/i18n/unicode/regex.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A singleton class that serves as a cache of compiled regex patterns. 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AutofillRegexes { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static AutofillRegexes* GetInstance(); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the compiled regex matcher corresponding to |pattern|. 25c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) icu::RegexMatcher* GetMatcher(const base::string16& pattern); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AutofillRegexes(); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~AutofillRegexes(); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend struct DefaultSingletonTraits<AutofillRegexes>; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Maps patterns to their corresponding regex matchers. 33c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::map<base::string16, icu::RegexMatcher*> matchers_; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(AutofillRegexes); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)AutofillRegexes* AutofillRegexes::GetInstance() { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Singleton<AutofillRegexes>::get(); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)AutofillRegexes::AutofillRegexes() { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)AutofillRegexes::~AutofillRegexes() { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) STLDeleteContainerPairSecondPointers(matchers_.begin(), 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) matchers_.end()); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 51c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)icu::RegexMatcher* AutofillRegexes::GetMatcher(const base::string16& pattern) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!matchers_.count(pattern)) { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const icu::UnicodeString icu_pattern(pattern.data(), pattern.length()); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UErrorCode status = U_ZERO_ERROR; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::RegexMatcher* matcher = new icu::RegexMatcher(icu_pattern, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UREGEX_CASE_INSENSITIVE, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) status); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(U_SUCCESS(status)); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) matchers_.insert(std::make_pair(pattern, matcher)); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return matchers_[pattern]; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace autofill { 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 71c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)bool MatchesPattern(const base::string16& input, 72c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) const base::string16& pattern) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::RegexMatcher* matcher = 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AutofillRegexes::GetInstance()->GetMatcher(pattern); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) icu::UnicodeString icu_input(input.data(), input.length()); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) matcher->reset(icu_input); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UErrorCode status = U_ZERO_ERROR; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) UBool match = matcher->find(0, status); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(U_SUCCESS(status)); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !!match; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace autofill 85