tdlight/td/telegram/files/FileLocation.h
Arseny Smirnov 66c604f2d4 FileMananger: do not store file reference is persistent file id
GitOrigin-RevId: 6da317bcac575ed4398a8971229250c0948ee097
2019-02-27 18:08:24 +03:00

980 lines
30 KiB
C++

//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/telegram/telegram_api.h"
#include "td/telegram/files/FileBitmask.h"
#include "td/telegram/files/FileType.h"
#include "td/telegram/net/DcId.h"
#include "td/utils/base64.h"
#include "td/utils/buffer.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/logging.h"
#include "td/utils/Slice.h"
#include "td/utils/StringBuilder.h"
#include "td/utils/Variant.h"
#include <tuple>
#include <utility>
namespace td {
class FileReferenceView {
public:
static Slice invalid_file_reference() {
return Slice("#");
}
static std::string create_invalid() {
return create_one(invalid_file_reference());
}
static std::string create_one(Slice first) {
if (first.empty()) {
return {};
}
unsigned char second_length = 255;
return PSTRING() << static_cast<char>(second_length) << first;
}
static std::string create_two(Slice first, Slice second) {
if (first.empty() && second.empty()) {
return {};
}
if (second.size() >= 255) {
LOG(ERROR) << "File reference is too big " << base64_encode(second);
second = invalid_file_reference();
}
char second_length = static_cast<char>(static_cast<unsigned char>(second.size()));
return PSTRING() << second_length << first << second;
}
explicit FileReferenceView(Slice data) {
if (data.empty()) {
return;
}
unsigned char second_size = data.ubegin()[0];
if (second_size == 255) {
first_ = data.substr(1);
second_ = data.substr(1);
} else {
if (second_size > data.size() - 1) {
first_ = second_ = data;
return;
}
auto first_size = data.size() - 1 - second_size;
first_ = data.substr(1, first_size);
second_ = data.substr(1 + first_size);
size_ = 2;
}
}
Slice upload() const {
return first_;
}
Slice download() const {
return second_;
}
bool has_upload() const {
return upload() != invalid_file_reference();
}
bool has_download() const {
return download() != invalid_file_reference();
}
std::pair<std::string, bool> delete_file_reference(Slice bad_file_reference) const {
if (bad_file_reference == FileReferenceView::invalid_file_reference()) {
return {string(), false};
}
auto first = first_;
auto second = second_;
bool is_changed = false;
if (first == bad_file_reference) {
first = invalid_file_reference();
is_changed = true;
}
if (second == bad_file_reference) {
second = invalid_file_reference();
is_changed = true;
}
if (!is_changed) {
return {string(), false};
}
return {create(first, second), true};
}
private:
std::string create(Slice first, Slice second) const {
if (size_ == 1) {
return create_one(first);
}
return create_two(first, second);
}
Slice first_;
Slice second_;
int size_{1};
};
struct EmptyRemoteFileLocation {
template <class StorerT>
void store(StorerT &storer) const {
}
template <class ParserT>
void parse(ParserT &parser) {
}
};
inline bool operator==(const EmptyRemoteFileLocation &lhs, const EmptyRemoteFileLocation &rhs) {
return true;
}
inline bool operator!=(const EmptyRemoteFileLocation &lhs, const EmptyRemoteFileLocation &rhs) {
return !(lhs == rhs);
}
struct PartialRemoteFileLocation {
int64 file_id_;
int32 part_count_;
int32 part_size_;
int32 ready_part_count_;
int32 is_big_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
};
inline bool operator==(const PartialRemoteFileLocation &lhs, const PartialRemoteFileLocation &rhs) {
return lhs.file_id_ == rhs.file_id_ && lhs.part_count_ == rhs.part_count_ && lhs.part_size_ == rhs.part_size_ &&
lhs.ready_part_count_ == rhs.ready_part_count_ && lhs.is_big_ == rhs.is_big_;
}
inline bool operator!=(const PartialRemoteFileLocation &lhs, const PartialRemoteFileLocation &rhs) {
return !(lhs == rhs);
}
inline StringBuilder &operator<<(StringBuilder &sb, const PartialRemoteFileLocation &location) {
return sb << '[' << (location.is_big_ ? "Big" : "Small") << " partial remote location with " << location.part_count_
<< " parts of size " << location.part_size_ << " with " << location.ready_part_count_ << " ready parts]";
}
struct PhotoRemoteFileLocation {
int64 id_;
int64 access_hash_;
int64 volume_id_;
int64 secret_;
int32 local_id_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
struct AsKey {
const PhotoRemoteFileLocation &key;
template <class StorerT>
void store(StorerT &storer) const;
};
AsKey as_key() const {
return AsKey{*this};
}
bool operator<(const PhotoRemoteFileLocation &other) const {
return std::tie(id_, volume_id_, local_id_) < std::tie(other.id_, other.volume_id_, other.local_id_);
}
bool operator==(const PhotoRemoteFileLocation &other) const {
return std::tie(id_, volume_id_, local_id_) == std::tie(other.id_, other.volume_id_, other.local_id_);
}
};
inline StringBuilder &operator<<(StringBuilder &string_builder, const PhotoRemoteFileLocation &location) {
return string_builder << "[id = " << location.id_ << ", access_hash = " << location.access_hash_
<< ", volume_id = " << location.volume_id_ << ", local_id = " << location.local_id_ << "]";
}
struct WebRemoteFileLocation {
string url_;
int64 access_hash_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
struct AsKey {
const WebRemoteFileLocation &key;
template <class StorerT>
void store(StorerT &storer) const;
};
AsKey as_key() const {
return AsKey{*this};
}
bool operator<(const WebRemoteFileLocation &other) const {
return url_ < other.url_;
}
bool operator==(const WebRemoteFileLocation &other) const {
return url_ == other.url_;
}
};
inline StringBuilder &operator<<(StringBuilder &string_builder, const WebRemoteFileLocation &location) {
return string_builder << "[url = " << location.url_ << ", access_hash = " << location.access_hash_ << "]";
}
struct CommonRemoteFileLocation {
int64 id_;
int64 access_hash_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
struct AsKey {
const CommonRemoteFileLocation &key;
template <class StorerT>
void store(StorerT &storer) const;
};
AsKey as_key() const {
return AsKey{*this};
}
bool operator<(const CommonRemoteFileLocation &other) const {
return std::tie(id_) < std::tie(other.id_);
}
bool operator==(const CommonRemoteFileLocation &other) const {
return std::tie(id_) == std::tie(other.id_);
}
};
inline StringBuilder &operator<<(StringBuilder &string_builder, const CommonRemoteFileLocation &location) {
return string_builder << "[id = " << location.id_ << ", access_hash = " << location.access_hash_ << "]";
}
class FullRemoteFileLocation {
public:
FileType file_type_{FileType::None};
private:
static constexpr int32 WEB_LOCATION_FLAG = 1 << 24;
static constexpr int32 FILE_REFERENCE_FLAG = 1 << 25;
bool web_location_flag_{false};
DcId dc_id_;
std::string file_reference_;
enum class LocationType : int32 { Web, Photo, Common, None };
Variant<WebRemoteFileLocation, PhotoRemoteFileLocation, CommonRemoteFileLocation> variant_;
LocationType location_type() const {
if (is_web()) {
return LocationType::Web;
}
switch (file_type_) {
case FileType::Photo:
case FileType::ProfilePhoto:
case FileType::Thumbnail:
case FileType::EncryptedThumbnail:
case FileType::Wallpaper:
return LocationType::Photo;
case FileType::Video:
case FileType::VoiceNote:
case FileType::Document:
case FileType::Sticker:
case FileType::Audio:
case FileType::Animation:
case FileType::Encrypted:
case FileType::VideoNote:
case FileType::SecureRaw:
case FileType::Secure:
return LocationType::Common;
case FileType::None:
case FileType::Size:
default:
UNREACHABLE();
case FileType::Temp:
return LocationType::None;
}
}
WebRemoteFileLocation &web() {
return variant_.get<WebRemoteFileLocation>();
}
PhotoRemoteFileLocation &photo() {
return variant_.get<PhotoRemoteFileLocation>();
}
CommonRemoteFileLocation &common() {
return variant_.get<CommonRemoteFileLocation>();
}
const WebRemoteFileLocation &web() const {
return variant_.get<WebRemoteFileLocation>();
}
const PhotoRemoteFileLocation &photo() const {
return variant_.get<PhotoRemoteFileLocation>();
}
const CommonRemoteFileLocation &common() const {
return variant_.get<CommonRemoteFileLocation>();
}
friend StringBuilder &operator<<(StringBuilder &string_builder,
const FullRemoteFileLocation &full_remote_file_location);
int32 key_type() const {
auto type = static_cast<int32>(file_type_);
if (is_web()) {
type |= WEB_LOCATION_FLAG;
}
return type;
}
int32 full_type() const {
auto type = static_cast<int32>(file_type_);
if (is_web()) {
type |= WEB_LOCATION_FLAG;
}
if (!file_reference_.empty()) {
type |= FILE_REFERENCE_FLAG;
}
return type;
}
public:
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
struct AsKey {
const FullRemoteFileLocation &key;
template <class StorerT>
void store(StorerT &storer) const;
};
AsKey as_key() const {
return AsKey{*this};
}
DcId get_dc_id() const {
CHECK(!is_web());
return dc_id_;
}
int64 get_access_hash() const {
switch (location_type()) {
case LocationType::Photo:
return photo().access_hash_;
case LocationType::Common:
return common().access_hash_;
case LocationType::Web:
return web().access_hash_;
case LocationType::None:
default:
UNREACHABLE();
return 0;
}
}
int64 get_id() const {
switch (location_type()) {
case LocationType::Photo:
return photo().id_;
case LocationType::Common:
return common().id_;
case LocationType::Web:
case LocationType::None:
default:
UNREACHABLE();
return 0;
}
}
void clear_file_reference() {
file_reference_ = "";
}
bool delete_file_reference(Slice bad_file_reference) {
auto res = FileReferenceView(file_reference_).delete_file_reference(bad_file_reference);
if (res.second) {
file_reference_ = res.first;
}
return res.second;
}
bool has_upload_file_reference() const {
return FileReferenceView(file_reference_).has_upload();
}
bool has_download_file_reference() const {
return FileReferenceView(file_reference_).has_download();
}
bool has_any_file_reference() const {
return has_upload_file_reference() || has_download_file_reference();
}
Slice get_raw_file_reference() const {
return file_reference_;
}
Slice get_upload_file_reference() const {
return FileReferenceView(file_reference_).upload();
}
Slice get_download_file_reference() const {
return FileReferenceView(file_reference_).download();
}
string get_url() const {
if (is_web()) {
return web().url_;
}
return string();
}
bool is_web() const {
return web_location_flag_;
}
bool is_photo() const {
return location_type() == LocationType::Photo;
}
bool is_common() const {
return location_type() == LocationType::Common;
}
bool is_encrypted_secret() const {
return file_type_ == FileType::Encrypted;
}
bool is_encrypted_secure() const {
return file_type_ == FileType::Secure;
}
bool is_encrypted_any() const {
return is_encrypted_secret() || is_encrypted_secure();
}
bool is_secure() const {
return file_type_ == FileType::SecureRaw || file_type_ == FileType::Secure;
}
bool is_document() const {
return is_common() && !is_secure() && !is_encrypted_secret();
}
#define as_input_web_file_location() as_input_web_file_location_impl(__FILE__, __LINE__)
tl_object_ptr<telegram_api::inputWebFileLocation> as_input_web_file_location_impl(const char *file, int line) const {
LOG_CHECK(is_web()) << file << ' ' << line;
return make_tl_object<telegram_api::inputWebFileLocation>(web().url_, web().access_hash_);
}
tl_object_ptr<telegram_api::InputFileLocation> as_input_file_location() const {
switch (location_type()) {
case LocationType::Photo:
return make_tl_object<telegram_api::inputFileLocation>(
photo().volume_id_, photo().local_id_, photo().secret_,
BufferSlice(FileReferenceView(file_reference_).download()));
case LocationType::Common:
if (is_encrypted_secret()) {
return make_tl_object<telegram_api::inputEncryptedFileLocation>(common().id_, common().access_hash_);
} else if (is_secure()) {
return make_tl_object<telegram_api::inputSecureFileLocation>(common().id_, common().access_hash_);
} else {
return make_tl_object<telegram_api::inputDocumentFileLocation>(
common().id_, common().access_hash_, BufferSlice(FileReferenceView(file_reference_).download()));
}
case LocationType::Web:
case LocationType::None:
default:
UNREACHABLE();
return nullptr;
}
}
#define as_input_document() as_input_document_impl(__FILE__, __LINE__)
tl_object_ptr<telegram_api::inputDocument> as_input_document_impl(const char *file, int line) const {
LOG_CHECK(is_common()) << file << ' ' << line;
LOG_CHECK(is_document()) << file << ' ' << line;
return make_tl_object<telegram_api::inputDocument>(common().id_, common().access_hash_,
BufferSlice(FileReferenceView(file_reference_).upload()));
}
#define as_input_photo() as_input_photo_impl(__FILE__, __LINE__)
tl_object_ptr<telegram_api::inputPhoto> as_input_photo_impl(const char *file, int line) const {
LOG_CHECK(is_photo()) << file << ' ' << line;
return make_tl_object<telegram_api::inputPhoto>(photo().id_, photo().access_hash_,
BufferSlice(FileReferenceView(file_reference_).upload()));
}
tl_object_ptr<telegram_api::inputEncryptedFile> as_input_encrypted_file() const {
CHECK(is_encrypted_secret());
return make_tl_object<telegram_api::inputEncryptedFile>(common().id_, common().access_hash_);
}
#define as_input_secure_file() as_input_secure_file_impl(__FILE__, __LINE__)
tl_object_ptr<telegram_api::inputSecureFile> as_input_secure_file_impl(const char *file, int line) const {
LOG_CHECK(is_secure()) << file << ' ' << line;
return make_tl_object<telegram_api::inputSecureFile>(common().id_, common().access_hash_);
}
// TODO: this constructor is just for immediate unserialize
FullRemoteFileLocation() = default;
FullRemoteFileLocation(FileType file_type, int64 id, int64 access_hash, int32 local_id, int64 volume_id, int64 secret,
DcId dc_id, std::string upload_file_reference, std::string download_file_reference)
: file_type_(file_type)
, dc_id_(dc_id)
, file_reference_(FileReferenceView::create_two(upload_file_reference, download_file_reference))
, variant_(PhotoRemoteFileLocation{id, access_hash, volume_id, secret, local_id}) {
CHECK(is_photo());
FileReferenceView view(file_reference_);
if (!(view.has_upload() && view.has_download())) {
LOG(ERROR) << "Tried to register file with invalid file reference";
file_reference_.clear();
}
}
FullRemoteFileLocation(FileType file_type, int64 id, int64 access_hash, DcId dc_id, std::string file_reference)
: file_type_(file_type)
, dc_id_(dc_id)
, file_reference_(FileReferenceView::create_one(file_reference))
, variant_(CommonRemoteFileLocation{id, access_hash}) {
CHECK(is_common());
FileReferenceView view(file_reference_);
if (!(view.has_upload() && view.has_download())) {
LOG(ERROR) << "Tried to register file with invalid file reference";
file_reference_.clear();
}
}
FullRemoteFileLocation(FileType file_type, string url, int64 access_hash)
: file_type_(file_type)
, web_location_flag_{true}
, dc_id_()
, variant_(WebRemoteFileLocation{std::move(url), access_hash}) {
CHECK(is_web());
CHECK(!web().url_.empty());
}
bool operator<(const FullRemoteFileLocation &other) const {
if (key_type() != other.key_type()) {
return key_type() < other.key_type();
}
if (dc_id_ != other.dc_id_) {
return dc_id_ < other.dc_id_;
}
switch (location_type()) {
case LocationType::Photo:
return photo() < other.photo();
case LocationType::Common:
return common() < other.common();
case LocationType::Web:
return web() < other.web();
case LocationType::None:
default:
UNREACHABLE();
return false;
}
}
bool operator==(const FullRemoteFileLocation &other) const {
if (key_type() != other.key_type()) {
return false;
}
if (dc_id_ != other.dc_id_) {
return false;
}
switch (location_type()) {
case LocationType::Photo:
return photo() == other.photo();
case LocationType::Common:
return common() == other.common();
case LocationType::Web:
return web() == other.web();
case LocationType::None:
default:
UNREACHABLE();
return false;
}
}
static const int32 KEY_MAGIC = 0x64374632;
};
inline StringBuilder &operator<<(StringBuilder &string_builder,
const FullRemoteFileLocation &full_remote_file_location) {
string_builder << "[" << full_remote_file_location.file_type_;
if (!full_remote_file_location.is_web()) {
string_builder << ", " << full_remote_file_location.get_dc_id();
}
if (!full_remote_file_location.file_reference_.empty()) {
FileReferenceView view(full_remote_file_location.file_reference_);
string_builder << ", " << tag("file_reference_upload", base64_encode(view.upload()))
<< tag("file_reference_download", base64_encode(view.download()));
}
string_builder << ", location = ";
if (full_remote_file_location.is_web()) {
string_builder << full_remote_file_location.web();
} else if (full_remote_file_location.is_photo()) {
string_builder << full_remote_file_location.photo();
} else if (full_remote_file_location.is_common()) {
string_builder << full_remote_file_location.common();
}
return string_builder << "]";
}
class RemoteFileLocation {
public:
enum class Type : int32 { Empty, Partial, Full };
Type type() const {
return static_cast<Type>(variant_.get_offset());
}
PartialRemoteFileLocation &partial() {
return variant_.get<1>();
}
FullRemoteFileLocation &full() {
return variant_.get<2>();
}
const PartialRemoteFileLocation &partial() const {
return variant_.get<1>();
}
const FullRemoteFileLocation &full() const {
return variant_.get<2>();
}
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
RemoteFileLocation() : variant_{EmptyRemoteFileLocation{}} {
}
explicit RemoteFileLocation(const FullRemoteFileLocation &full) : variant_(full) {
}
explicit RemoteFileLocation(const PartialRemoteFileLocation &partial) : variant_(partial) {
}
RemoteFileLocation(FileType file_type, int64 id, int64 access_hash, int32 local_id, int64 volume_id, int64 secret,
DcId dc_id, std::string upload_file_reference, std::string download_file_reference)
: variant_(FullRemoteFileLocation{file_type, id, access_hash, local_id, volume_id, secret, dc_id,
std::move(upload_file_reference), std::move(download_file_reference)}) {
}
RemoteFileLocation(FileType file_type, int64 id, int64 access_hash, DcId dc_id, std::string file_reference)
: variant_(FullRemoteFileLocation{file_type, id, access_hash, dc_id, std::move(file_reference)}) {
}
private:
Variant<EmptyRemoteFileLocation, PartialRemoteFileLocation, FullRemoteFileLocation> variant_;
friend bool operator==(const RemoteFileLocation &lhs, const RemoteFileLocation &rhs);
bool is_empty() const {
switch (type()) {
case Type::Empty:
return true;
case Type::Partial:
return partial().ready_part_count_ == 0;
case Type::Full:
return false;
default:
UNREACHABLE();
return false;
}
}
};
inline bool operator==(const RemoteFileLocation &lhs, const RemoteFileLocation &rhs) {
if (lhs.is_empty() && rhs.is_empty()) {
return true;
}
return lhs.variant_ == rhs.variant_;
}
inline bool operator!=(const RemoteFileLocation &lhs, const RemoteFileLocation &rhs) {
return !(lhs == rhs);
}
struct EmptyLocalFileLocation {
template <class StorerT>
void store(StorerT &storer) const {
}
template <class ParserT>
void parse(ParserT &parser) {
}
};
inline bool operator==(const EmptyLocalFileLocation &lhs, const EmptyLocalFileLocation &rhs) {
return true;
}
inline bool operator!=(const EmptyLocalFileLocation &lhs, const EmptyLocalFileLocation &rhs) {
return !(lhs == rhs);
}
struct PartialLocalFileLocation {
FileType file_type_;
int32 part_size_;
string path_;
string iv_;
string ready_bitmask_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
};
inline bool operator==(const PartialLocalFileLocation &lhs, const PartialLocalFileLocation &rhs) {
return lhs.file_type_ == rhs.file_type_ && lhs.path_ == rhs.path_ && lhs.part_size_ == rhs.part_size_ &&
lhs.iv_ == rhs.iv_ && lhs.ready_bitmask_ == rhs.ready_bitmask_;
}
inline bool operator!=(const PartialLocalFileLocation &lhs, const PartialLocalFileLocation &rhs) {
return !(lhs == rhs);
}
inline StringBuilder &operator<<(StringBuilder &sb, const PartialLocalFileLocation &location) {
return sb << "[partial local location of " << location.file_type_ << " with part size " << location.part_size_
<< " and ready parts " << Bitmask(Bitmask::Decode{}, location.ready_bitmask_) << "] at \"" << location.path_
<< '"';
}
struct FullLocalFileLocation {
FileType file_type_;
string path_;
uint64 mtime_nsec_;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
const FullLocalFileLocation &as_key() const {
return *this;
}
// TODO: remove this constructor
FullLocalFileLocation() : file_type_(FileType::Photo) {
}
FullLocalFileLocation(FileType file_type, string path, uint64 mtime_nsec)
: file_type_(file_type), path_(std::move(path)), mtime_nsec_(mtime_nsec) {
}
static const int32 KEY_MAGIC = 0x84373817;
};
inline bool operator<(const FullLocalFileLocation &lhs, const FullLocalFileLocation &rhs) {
return std::tie(lhs.file_type_, lhs.mtime_nsec_, lhs.path_) < std::tie(rhs.file_type_, rhs.mtime_nsec_, rhs.path_);
}
inline bool operator==(const FullLocalFileLocation &lhs, const FullLocalFileLocation &rhs) {
return std::tie(lhs.file_type_, lhs.mtime_nsec_, lhs.path_) == std::tie(rhs.file_type_, rhs.mtime_nsec_, rhs.path_);
}
inline bool operator!=(const FullLocalFileLocation &lhs, const FullLocalFileLocation &rhs) {
return !(lhs == rhs);
}
inline StringBuilder &operator<<(StringBuilder &sb, const FullLocalFileLocation &location) {
return sb << "[full local location of " << location.file_type_ << "] at \"" << location.path_ << '"';
}
struct PartialLocalFileLocationPtr {
unique_ptr<PartialLocalFileLocation> location_; // must never be equal to nullptr
PartialLocalFileLocationPtr() : location_(make_unique<PartialLocalFileLocation>()) {
}
explicit PartialLocalFileLocationPtr(PartialLocalFileLocation location)
: location_(make_unique<PartialLocalFileLocation>(location)) {
}
PartialLocalFileLocationPtr(const PartialLocalFileLocationPtr &other)
: location_(make_unique<PartialLocalFileLocation>(*other.location_)) {
}
PartialLocalFileLocationPtr &operator=(const PartialLocalFileLocationPtr &other) {
*location_ = *other.location_;
return *this;
}
PartialLocalFileLocationPtr(PartialLocalFileLocationPtr &&other)
: location_(make_unique<PartialLocalFileLocation>(std::move(*other.location_))) {
}
PartialLocalFileLocationPtr &operator=(PartialLocalFileLocationPtr &&other) {
*location_ = std::move(*other.location_);
return *this;
}
~PartialLocalFileLocationPtr() = default;
template <class StorerT>
void store(StorerT &storer) const;
};
inline bool operator==(const PartialLocalFileLocationPtr &lhs, const PartialLocalFileLocationPtr &rhs) {
return *lhs.location_ == *rhs.location_;
}
class LocalFileLocation {
public:
enum class Type : int32 { Empty, Partial, Full };
Type type() const {
return static_cast<Type>(variant_.get_offset());
}
PartialLocalFileLocation &partial() {
return *variant_.get<1>().location_;
}
FullLocalFileLocation &full() {
return variant_.get<2>();
}
const PartialLocalFileLocation &partial() const {
return *variant_.get<1>().location_;
}
const FullLocalFileLocation &full() const {
return variant_.get<2>();
}
CSlice file_name() const {
switch (type()) {
case Type::Partial:
return partial().path_;
case Type::Full:
return full().path_;
case Type::Empty:
default:
return CSlice();
}
}
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
LocalFileLocation() : variant_{EmptyLocalFileLocation()} {
}
explicit LocalFileLocation(const PartialLocalFileLocation &partial) : variant_(PartialLocalFileLocationPtr(partial)) {
}
explicit LocalFileLocation(const FullLocalFileLocation &full) : variant_(full) {
}
LocalFileLocation(FileType file_type, string path, uint64 mtime_nsec)
: variant_(FullLocalFileLocation{file_type, std::move(path), mtime_nsec}) {
}
private:
Variant<EmptyLocalFileLocation, PartialLocalFileLocationPtr, FullLocalFileLocation> variant_;
friend bool operator==(const LocalFileLocation &lhs, const LocalFileLocation &rhs);
};
inline bool operator==(const LocalFileLocation &lhs, const LocalFileLocation &rhs) {
return lhs.variant_ == rhs.variant_;
}
inline bool operator!=(const LocalFileLocation &lhs, const LocalFileLocation &rhs) {
return !(lhs == rhs);
}
inline StringBuilder &operator<<(StringBuilder &sb, const LocalFileLocation &location) {
switch (location.type()) {
case LocalFileLocation::Type::Empty:
return sb << "[empty local location]";
case LocalFileLocation::Type::Partial:
return sb << location.partial();
case LocalFileLocation::Type::Full:
return sb << location.full();
default:
UNREACHABLE();
return sb;
}
}
struct FullGenerateFileLocation {
FileType file_type_{FileType::None};
string original_path_;
string conversion_;
static const int32 KEY_MAGIC = 0x8b60a1c8;
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
const FullGenerateFileLocation &as_key() const {
return *this;
}
FullGenerateFileLocation() = default;
FullGenerateFileLocation(FileType file_type, string original_path, string conversion)
: file_type_(file_type), original_path_(std::move(original_path)), conversion_(std::move(conversion)) {
}
};
inline bool operator<(const FullGenerateFileLocation &lhs, const FullGenerateFileLocation &rhs) {
return std::tie(lhs.file_type_, lhs.original_path_, lhs.conversion_) <
std::tie(rhs.file_type_, rhs.original_path_, rhs.conversion_);
}
inline bool operator==(const FullGenerateFileLocation &lhs, const FullGenerateFileLocation &rhs) {
return std::tie(lhs.file_type_, lhs.original_path_, lhs.conversion_) ==
std::tie(rhs.file_type_, rhs.original_path_, rhs.conversion_);
}
inline bool operator!=(const FullGenerateFileLocation &lhs, const FullGenerateFileLocation &rhs) {
return !(lhs == rhs);
}
inline StringBuilder &operator<<(StringBuilder &string_builder,
const FullGenerateFileLocation &full_generated_file_location) {
return string_builder << '[' << tag("file_type", full_generated_file_location.file_type_)
<< tag("original_path", full_generated_file_location.original_path_)
<< tag("conversion", full_generated_file_location.conversion_) << ']';
}
class GenerateFileLocation {
public:
enum class Type : int32 { Empty, Full };
Type type() const {
return type_;
}
FullGenerateFileLocation &full() {
CHECK(type_ == Type::Full);
return full_;
}
const FullGenerateFileLocation &full() const {
CHECK(type_ == Type::Full);
return full_;
}
template <class StorerT>
void store(StorerT &storer) const;
template <class ParserT>
void parse(ParserT &parser);
GenerateFileLocation() : type_(Type::Empty) {
}
explicit GenerateFileLocation(const FullGenerateFileLocation &full) : type_(Type::Full), full_(full) {
}
GenerateFileLocation(FileType file_type, string original_path, string conversion)
: type_(Type::Full), full_{file_type, std::move(original_path), std::move(conversion)} {
}
private:
Type type_;
FullGenerateFileLocation full_;
};
inline bool operator==(const GenerateFileLocation &lhs, const GenerateFileLocation &rhs) {
if (lhs.type() != rhs.type()) {
return false;
}
switch (lhs.type()) {
case GenerateFileLocation::Type::Empty:
return true;
case GenerateFileLocation::Type::Full:
return lhs.full() == rhs.full();
}
UNREACHABLE();
return false;
}
inline bool operator!=(const GenerateFileLocation &lhs, const GenerateFileLocation &rhs) {
return !(lhs == rhs);
}
} // namespace td