Merge pull request #1706 from alamt22/cpp-temp-file-support

File system api c++: added support for creating temp. files and directories

copying.md

@@ -156,6 +156,7 @@ _the openage authors_ are:
 | Nikhil Ghosh                | NikhilGhosh75               | nghosh606 à gmail dawt com                        |
 | Edvin Lindholm              | EdvinLndh                   | edvinlndh à gmail dawt com                        |
 | Jeremiah Morgan             | jere8184                    | jeremiahmorgan dawt bham à outlook dawt com       |
+| Tobias Alam                 | alamt22                     | tobiasal à umich dawt edu                         |
 
 If you're a first-time committer, add yourself to the above list. This is not
 just for legal reasons, but also to keep an overview of all those nicknames.

libopenage/util/file.cpp

@@ -16,6 +16,7 @@
 #include "util/filelike/python.h"
 #include "util/path.h"
 #include "util/strings.h"
+#include "util/fslike/directory.h"
 
 
 namespace openage::util {
@@ -121,5 +122,14 @@ std::ostream &operator<<(std::ostream &stream, const File &file) {
 	return stream;
 }
 
+static File get_temp_file() {
+	fslike::Directory temp_dir = fslike::Directory::get_temp_directory();
+	std::string file_name = std::tmpnam(nullptr);
+	std::ostringstream dir_path;
+	temp_dir.repr(dir_path);
+	mode_t mode = 0777;
+	File file_wrapper = File(dir_path.str() + file_name, mode);
+	return file_wrapper;
+}
 
 } // namespace openage::util

libopenage/util/file.h

@@ -98,9 +98,10 @@ class OAAPI File {
 	void flush();
 	ssize_t size();
 	std::vector<std::string> get_lines();
-
 	std::shared_ptr<filelike::FileLike> get_fileobj() const;
 
+	static File get_temp_file();
+
 protected:
 	std::shared_ptr<filelike::FileLike> filelike;
 

libopenage/util/fslike/directory.cpp

@@ -12,6 +12,7 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <iostream>
+#include <filesystem>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <utility>
@@ -292,4 +293,11 @@ std::ostream &Directory::repr(std::ostream &stream) {
 	return stream;
 }
 
+static Directory get_temp_directory() {
+	std::string temp_dir_path = std::filesystem::temp_directory_path() / std::tmpnam(nullptr);
+	bool create = true;
+	Directory directory = Directory(temp_dir_path, create);
+	return directory;
+}
+
 } // namespace openage::util::fslike

libopenage/util/fslike/directory.h

@@ -48,6 +48,8 @@ class Directory : public FSLike {
 
 	std::ostream &repr(std::ostream &) override;
 
+	static Directory get_temp_directory();
+
 protected:
 	/**
 	 * resolve the path to an actually usable one.
@@ -59,7 +61,6 @@ class Directory : public FSLike {
 
 	std::string basepath;
 };
-
 } // namespace fslike
 } // namespace util
 } // namespace openage

libopenage/util/path.cpp

@@ -1,4 +1,4 @@
-// Copyright 2015-2023 the openage authors. See copying.md for legal info.
+// Copyright 2015-2024 the openage authors. See copying.md for legal info.
 
 #include "path.h"
 

libopenage/util/path.h

@@ -1,4 +1,4 @@
-// Copyright 2015-2023 the openage authors. See copying.md for legal info.
+// Copyright 2015-2024 the openage authors. See copying.md for legal info.
 
 #pragma once