Добавлена команда импорта import из архива tar.gz

source/snag/core/core.d

@@ -290,4 +290,99 @@ class Snag {
 		);
 		writeln("Export to archive completed successfully: ", file);
 	}
+
+	void importSnapshot(string path, string comment, string author, string email) {
+		try {
+			(!path.isFile || !path.endsWith("tar.gz")) &&
+				throw new SnagException(
+						"Path is not an archive file"
+					);
+		} catch (Exception e) {
+			throw new SnagException(
+					"Failed to verify the archive file:\n\t"
+					~ e.msg
+				);
+		}
+
+		string newBranch = _date ~ "-import";
+		string tempDirectory = tempDir().buildPath(newBranch);
+
+		mkdir(tempDirectory);
+
+		scope(exit) tempDirectory.exists
+				&& tempDirectory.isDir
+				&& tempDirectory.rmdirRecurse;
+
+		auto result = execute([
+			"tar", "xf", path, "-C", tempDirectory
+		]);
+		result.status &&
+			throw new SnagException(
+				"The error occurred during decompression (or unpacking) of the archive:\n\t"
+				~ result.output.split('\n')[0]
+			);
+
+		// Выполнение git команд относительно распакованного архива
+		string[] customCommand = format(
+			"git --git-dir=%s --work-tree=%s",
+			_config.git, tempDirectory
+		).split();
+
+		// Необходимо проверить, что текущее состояние файлов не идентично файлам распакованного архива
+		result = execute(customCommand ~ ["status", "--porcelain"]);
+		result.status &&
+			throw new SnagException(
+				"An error occurred while checking the file tracking status:\n"
+				~ result.output.split('\n')[0]
+			);
+
+		// Если текущее состояние файлов идентично файлам распакованного архива
+		!result.output.length &&
+			throw new SnagException(
+				"Import aborted:\n\t"
+				~ "The new state of the files is up to date as of the current snapshot"
+			);
+
+		git(
+			["checkout", "--orphan", newBranch ],
+			"Failed to create a branch from the new state"
+		);
+
+		// Создание нового снимка на основе состояния файлов из распакованного архива
+		result = execute(customCommand ~ ["add", "."]);
+		result.status &&
+			throw new SnagException(
+				"Failed to prepare files for archiving:\n"
+				~ result.output.split('\n')[0]
+			);
+
+		author.length && (environment["GIT_AUTHOR_NAME"] = author);
+		email.length && (environment["GIT_AUTHOR_EMAIL"] = email);
+
+		string message = comment.length ? comment : "Creating a snapshot from import";
+
+		result = execute(customCommand ~ ["commit", "-m"] ~ message);
+		result.status &&
+			throw new SnagException(
+				"Failed to create a snapshot:\n"
+				~ result.output.split('\n')[0]
+			);
+
+		// Сброс состояния файлов
+		git(
+			["restore", "."],
+			"Failed to reset file changes state"
+		);
+		git(
+			["clean", "-fd"],
+			"Failed to clean untracked files"
+		);
+
+		string newSnapshot = git(
+			["rev-parse", "--short", "HEAD"],
+			"Failed to retrieve current snapshot information"
+		).output.strip('\n');
+
+		writeln("Import completed successfully: ", newSnapshot);
+	}
 }