Upstreaming browser/ui/uikit_ui_util from iOS.
[chromium-blink-merge.git] / content / renderer / android / phone_number_detector.cc
blob54da5fee51a442879e6152bba11fb862020ceb64
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/renderer/android/phone_number_detector.h"
7 #include <algorithm>
9 #include "base/strings/string_util.h"
10 #include "base/strings/utf_string_conversions.h"
11 #include "content/public/renderer/android_content_detection_prefixes.h"
12 #include "net/base/escape.h"
13 #include "third_party/libphonenumber/src/phonenumber_api.h"
14 #include "third_party/libphonenumber/src/phonenumbers/phonenumbermatch.h"
15 #include "third_party/libphonenumber/src/phonenumbers/phonenumbermatcher.h"
16 #include "third_party/libphonenumber/src/phonenumbers/region_code.h"
18 using i18n::phonenumbers::PhoneNumberMatch;
19 using i18n::phonenumbers::PhoneNumberMatcher;
20 using i18n::phonenumbers::PhoneNumberUtil;
21 using i18n::phonenumbers::RegionCode;
23 namespace {
25 // Maximum number of characters to look around for phone number detection.
26 const size_t kMaximumTelephoneLength = 20;
28 } // anonymous namespace
30 namespace content {
32 PhoneNumberDetector::PhoneNumberDetector()
33 : region_code_(RegionCode::GetUnknown()) {
36 // Region should be empty or an ISO 3166-1 alpha-2 country code.
37 PhoneNumberDetector::PhoneNumberDetector(const std::string& region)
38 : region_code_(region.empty() ? RegionCode::GetUnknown()
39 : base::ToUpperASCII(region)) {
42 PhoneNumberDetector::~PhoneNumberDetector() {
45 size_t PhoneNumberDetector::GetMaximumContentLength() {
46 return kMaximumTelephoneLength;
49 GURL PhoneNumberDetector::GetIntentURL(const std::string& content_text) {
50 if (content_text.empty())
51 return GURL();
53 return GURL(kPhoneNumberPrefix +
54 net::EscapeQueryParamValue(content_text, true));
57 bool PhoneNumberDetector::FindContent(
58 const base::string16::const_iterator& begin,
59 const base::string16::const_iterator& end,
60 size_t* start_pos,
61 size_t* end_pos,
62 std::string* content_text) {
63 base::string16 utf16_input = base::string16(begin, end);
64 std::string utf8_input = base::UTF16ToUTF8(utf16_input);
66 PhoneNumberUtil* phone_util = PhoneNumberUtil::GetInstance();
67 if (phone_util->IsAlphaNumber(utf8_input))
68 phone_util->ConvertAlphaCharactersInNumber(&utf8_input);
69 PhoneNumberMatcher matcher(utf8_input, region_code_);
70 if (matcher.HasNext()) {
71 PhoneNumberMatch match;
72 matcher.Next(&match);
73 phone_util->FormatNumberForMobileDialing(match.number(), region_code_,
74 false, /* with_formatting */
75 content_text);
77 // If the number can't be dialed from the current region, the formatted
78 // string will be empty.
79 if (content_text->empty())
80 return false;
82 // Need to return start_pos and end_pos relative to a UTF16 encoding.
83 *start_pos =
84 base::UTF8ToUTF16(utf8_input.substr(0, match.start())).length();
85 *end_pos = *start_pos + base::UTF8ToUTF16(match.raw_string()).length();
87 return true;
90 return false;
93 } // namespace content