chromium/chrome/browser/sharing/click_to_call/phone_number_regex.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/sharing/click_to_call/phone_number_regex.h"

#include <string>

#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/task/thread_pool.h"
#include "base/time/time.h"
#include "third_party/re2/src/re2/re2.h"

namespace {

// Heuristical regex to search for phone number.
// (^|\p{Z}) makes sure the pattern begins with a new word.
// (\(?\+[0-9]+\)?) checks for optional international code in number.
// ([.\p{Z}\-\(]?[0-9][\p{Z}\-\)]?){8,} checks for at least eight occurrences of
// digits with optional separators to reduce false positives.
const char kPhoneNumberRegexPatternSimple[] = …;

void PrecompilePhoneNumberRegexes() { … }

}  // namespace

const re2::RE2& GetPhoneNumberRegex() { … }

void PrecompilePhoneNumberRegexesAsync() { … }