Added storage/storage_cloud_blob.

- This file is needed to store same code parts related
 to management of dictionaries and emoji sets.
 - Moved extracting of zip files to storage_cloud_blob.

Telegram/CMakeLists.txt

@@ -856,6 +856,8 @@ PRIVATE
     storage/serialize_common.h
     storage/serialize_document.cpp
     storage/serialize_document.h
+    storage/storage_cloud_blob.cpp
+    storage/storage_cloud_blob.h
     storage/storage_facade.cpp
     storage/storage_facade.h
     # storage/storage_feed_messages.cpp

Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp

@@ -22,6 +22,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "main/main_account.h"
 #include "mainwidget.h"
 #include "app.h"
+#include "storage/storage_cloud_blob.h"
 #include "styles/style_layers.h"
 #include "styles/style_boxes.h"
 #include "styles/style_chat_helpers.h"
@@ -197,26 +198,6 @@ QString StateDescription(const SetState &state) {
 	});
 }
 
-QByteArray ReadFinalFile(const QString &path) {
-	constexpr auto kMaxZipSize = 10 * 1024 * 1024;
-	auto file = QFile(path);
-	if (file.size() > kMaxZipSize || !file.open(QIODevice::ReadOnly)) {
-		return QByteArray();
-	}
-	return file.readAll();
-}
-
-bool ExtractZipFile(zlib::FileToRead &zip, const QString path) {
-	constexpr auto kMaxSize = 10 * 1024 * 1024;
-	const auto content = zip.readCurrentFileContent(kMaxSize);
-	if (content.isEmpty() || zip.error() != UNZ_OK) {
-		return false;
-	}
-	auto file = QFile(path);
-	return file.open(QIODevice::WriteOnly)
-		&& (file.write(content) == content.size());
-}
-
 bool GoodSetPartName(const QString &name) {
 	return (name == qstr("config.json"))
 		|| (name.startsWith(qstr("emoji_"))
@@ -224,30 +205,7 @@ bool GoodSetPartName(const QString &name) {
 }
 
 bool UnpackSet(const QString &path, const QString &folder) {
-	const auto bytes = ReadFinalFile(path);
-	if (bytes.isEmpty()) {
-		return false;
-	}
-
-	auto zip = zlib::FileToRead(bytes);
-	if (zip.goToFirstFile() != UNZ_OK) {
-		return false;
-	}
-	do {
-		const auto name = zip.getCurrentFileName();
-		const auto path = folder + '/' + name;
-		if (GoodSetPartName(name) && !ExtractZipFile(zip, path)) {
-			return false;
-		}
-
-		const auto jump = zip.goToNextFile();
-		if (jump == UNZ_END_OF_LIST_OF_FILE) {
-			break;
-		} else if (jump != UNZ_OK) {
-			return false;
-		}
-	} while (true);
-	return true;
+	return Storage::UnpackBlob(path, folder, GoodSetPartName);
 }
 
 Loader::Loader(QObject *parent, int id)

Telegram/SourceFiles/chat_helpers/spellchecker_common.cpp

@@ -9,6 +9,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #ifndef TDESKTOP_DISABLE_SPELLCHECK
 
+#include "storage/storage_cloud_blob.h"
+
 #include "base/zlib_help.h"
 
 namespace Spellchecker {
@@ -84,26 +86,6 @@ void EnsurePath() {
 	}
 }
 
-QByteArray ReadFinalFile(const QString &path) {
-	constexpr auto kMaxZipSize = 10 * 1024 * 1024; //12
-	auto file = QFile(path);
-	if (file.size() > kMaxZipSize || !file.open(QIODevice::ReadOnly)) {
-		return QByteArray();
-	}
-	return file.readAll();
-}
-
-bool ExtractZipFile(zlib::FileToRead &zip, const QString path) {
-	constexpr auto kMaxSize = 10 * 1024 * 1024;
-	const auto content = zip.readCurrentFileContent(kMaxSize);
-	if (content.isEmpty() || zip.error() != UNZ_OK) {
-		return false;
-	}
-	auto file = QFile(path);
-	return file.open(QIODevice::WriteOnly)
-		&& (file.write(content) == content.size());
-}
-
 } // namespace
 
 std::initializer_list<const Dict> Dictionaries() {
@@ -128,29 +110,7 @@ QString DictionariesPath() {
 
 bool UnpackDictionary(const QString &path, int langId) {
 	const auto folder = DictPathByLangId(langId);
-	const auto bytes = ReadFinalFile(path);
-	if (bytes.isEmpty()) {
-		return false;
-	}
-	auto zip = zlib::FileToRead(bytes);
-	if (zip.goToFirstFile() != UNZ_OK) {
-		return false;
-	}
-	do {
-		const auto name = zip.getCurrentFileName();
-		const auto path = folder + '/' + name;
-		if (IsGoodPartName(name) && !ExtractZipFile(zip, path)) {
-			return false;
-		}
-
-		const auto jump = zip.goToNextFile();
-		if (jump == UNZ_END_OF_LIST_OF_FILE) {
-			break;
-		} else if (jump != UNZ_OK) {
-			return false;
-		}
-	} while (true);
-	return true;
+	return Storage::UnpackBlob(path, folder, IsGoodPartName);
 }
 
 bool DictionaryExists(int langId) {

Telegram/SourceFiles/storage/storage_cloud_blob.cpp

@@ -0,0 +1,67 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "storage/storage_cloud_blob.h"
+
+#include "base/zlib_help.h"
+
+namespace Storage {
+
+namespace {
+
+QByteArray ReadFinalFile(const QString &path) {
+	constexpr auto kMaxZipSize = 10 * 1024 * 1024;
+	auto file = QFile(path);
+	if (file.size() > kMaxZipSize || !file.open(QIODevice::ReadOnly)) {
+		return QByteArray();
+	}
+	return file.readAll();
+}
+
+bool ExtractZipFile(zlib::FileToRead &zip, const QString path) {
+	constexpr auto kMaxSize = 25 * 1024 * 1024;
+	const auto content = zip.readCurrentFileContent(kMaxSize);
+	if (content.isEmpty() || zip.error() != UNZ_OK) {
+		return false;
+	}
+	auto file = QFile(path);
+	return file.open(QIODevice::WriteOnly)
+		&& (file.write(content) == content.size());
+}
+
+} // namespace
+
+bool UnpackBlob(
+	const QString &path,
+	const QString &folder,
+	Fn<bool(const QString &)> checkNameCallback) {
+	const auto bytes = ReadFinalFile(path);
+	if (bytes.isEmpty()) {
+		return false;
+	}
+	auto zip = zlib::FileToRead(bytes);
+	if (zip.goToFirstFile() != UNZ_OK) {
+		return false;
+	}
+	do {
+		const auto name = zip.getCurrentFileName();
+		const auto path = folder + '/' + name;
+		if (checkNameCallback(name) && !ExtractZipFile(zip, path)) {
+			return false;
+		}
+
+		const auto jump = zip.goToNextFile();
+		if (jump == UNZ_END_OF_LIST_OF_FILE) {
+			break;
+		} else if (jump != UNZ_OK) {
+			return false;
+		}
+	} while (true);
+	return true;
+}
+
+} // namespace Storage

Telegram/SourceFiles/storage/storage_cloud_blob.h

@@ -0,0 +1,17 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Storage {
+
+bool UnpackBlob(
+	const QString &path,
+	const QString &folder,
+	Fn<bool(const QString &)> checkNameCallback);
+
+} // namespace Storage