chromium/net/dns/dns_hosts.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include "net/dns/dns_hosts.h"

#include <string>
#include <string_view>
#include <utility>

#include "base/check.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/string_util.h"
#include "base/trace_event/memory_usage_estimator.h"
#include "build/build_config.h"
#include "net/base/cronet_buildflags.h"
#include "net/base/url_util.h"
#include "net/dns/dns_util.h"
#include "url/url_canon.h"

namespace net {

namespace {

// Parses the contents of a hosts file.  Returns one token (IP or hostname) at
// a time.  Doesn't copy anything; accepts the file as a std::string_view and
// returns tokens as StringPieces.
class HostsParser { … };

void ParseHostsWithCommaMode(const std::string& contents,
                             DnsHosts* dns_hosts,
                             ParseHostsCommaMode comma_mode) { … }

}  // namespace

void ParseHostsWithCommaModeForTesting(const std::string& contents,
                                       DnsHosts* dns_hosts,
                                       ParseHostsCommaMode comma_mode) { … }

void ParseHosts(const std::string& contents, DnsHosts* dns_hosts) { … }

DnsHostsParser::~DnsHostsParser() = default;

DnsHostsFileParser::DnsHostsFileParser(base::FilePath hosts_file_path)
    : … { … }

DnsHostsFileParser::~DnsHostsFileParser() = default;

bool DnsHostsFileParser::ParseHosts(DnsHosts* dns_hosts) const { … }

}  // namespace net