Add archive writer support for existing c FILE*

also deduplicate some code

openVulkanoCpp/IO/Archive/ArchiveWriter.cpp

@@ -15,11 +15,11 @@
 
 namespace OpenVulkano
 {
-	ArchiveWriter::ArchiveWriter(const char* fileName, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password)
+	ArchiveWriter::ArchiveWriter(ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password)
 			: ArchiveBase(archive_write_new(), archive_entry_new(), logger)
 			, m_archiveConfig(archiveConfiguration)
 			, m_shouldCompress(&SimpleFileTypeShouldCompressChecker)
-	{ //TODO error handling
+	{ //TODO better error handling
 		ChkErr(archive_write_set_format(m_archive, archiveConfiguration.GetLibArchiveArchiveType()));
 		if (archiveConfiguration.type == ArchiveType::TAR)
 		{
@@ -32,30 +32,58 @@ namespace OpenVulkano
 			ChkErr(archive_write_set_options(m_archive, level.c_str()));
 		}
 		if (password) ChkErr(archive_write_set_passphrase(m_archive, password));
+	}
+
+	ArchiveWriter::ArchiveWriter(const char* fileName, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password)
+			: ArchiveWriter(archiveConfiguration, logger, password)
+	{
 		ChkErr(archive_write_open_filename(m_archive, fileName));
 	}
 
 	ArchiveWriter::ArchiveWriter(const std::filesystem::path& fileName, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password)
-			: ArchiveBase(archive_write_new(), archive_entry_new(), logger)
+			: ArchiveWriter(archiveConfiguration, logger, password)
-			, m_archiveConfig(archiveConfiguration)
-			, m_shouldCompress(&SimpleFileTypeShouldCompressChecker)
-	{ //TODO error handling
-		ChkErr(archive_write_set_format(m_archive, archiveConfiguration.GetLibArchiveArchiveType()));
-		if (archiveConfiguration.type == ArchiveType::TAR)
 	{
-			ChkErr(archive_write_add_filter(m_archive, archiveConfiguration.GetLibArchiveCompressionType()));
+#pragma clang diagnostic push
-		}
+#pragma ide diagnostic ignored "UnreachableCode"
-		if (archiveConfiguration.compression != CompressionType::NONE &&
-			archiveConfiguration.compressionLevel > 0)
-		{
-			std::string level = "compression-level=" + std::to_string(archiveConfiguration.compressionLevel);
-			ChkErr(archive_write_set_options(m_archive, level.c_str()));
-		}
-		if (password) ChkErr(archive_write_set_passphrase(m_archive, password));
 		if constexpr (std::is_same_v<std::filesystem::path::value_type, char>)
 			ChkErr(archive_write_open_filename(m_archive, (const char*)fileName.c_str()));
 		else
 			ChkErr(archive_write_open_filename_w(m_archive, (const wchar_t*)fileName.c_str()));
+#pragma clang diagnostic pop
+	}
+
+	namespace
+	{
+		static int LibArchiveFileOpen(struct archive* a, void* clientData)
+		{
+			(void)clientData; /* UNUSED */
+			archive_write_set_bytes_in_last_block(a, 1);
+			return (ARCHIVE_OK);
+		}
+
+		static ssize_t LibArchiveFileWrite(struct archive* a, void* clientData, const void* buff, size_t length)
+		{
+			FILE* file = (FILE*)clientData;
+			size_t bytesWritten;
+
+			while (true)
+			{
+				bytesWritten = fwrite(buff, 1, length, file);
+				if (bytesWritten <= 0)
+				{
+					if (errno == EINTR) continue;
+					archive_set_error(a, errno, "Write error");
+					return (-1);
+				}
+				return (bytesWritten);
+			}
+		}
+	}
+	
+	ArchiveWriter::ArchiveWriter(FILE* file, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password)
+			: ArchiveWriter(archiveConfiguration, logger, password)
+	{
+		ChkErr(archive_write_open2(m_archive, file, LibArchiveFileOpen, LibArchiveFileWrite, NULL, NULL));
 	}
 
 	ArchiveWriter::~ArchiveWriter()

openVulkanoCpp/IO/Archive/ArchiveWriter.hpp

@@ -26,6 +26,8 @@ namespace OpenVulkano
 		bool m_lastCompressed = true;
 		std::function<bool(const FileDescription&)> m_shouldCompress;
 
+		ArchiveWriter(ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger, const char* password);
+
 	public:
 		ArchiveWriter(const char* fileName, const std::shared_ptr<spdlog::logger>& logger = nullptr, const char* password = nullptr)
 				: ArchiveWriter(fileName, ArchiveConfiguration::FromFileName(fileName), logger, password)
@@ -39,6 +41,8 @@ namespace OpenVulkano
 
 		ArchiveWriter(const std::filesystem::path& fileName, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger = nullptr, const char* password = nullptr);
 		
+		ArchiveWriter(FILE* file, ArchiveConfiguration archiveConfiguration, const std::shared_ptr<spdlog::logger>& logger = nullptr, const char* password = nullptr);
+
 		~ArchiveWriter() override;
 
 		[[nodiscard]] size_t GetTotalWrittenBytes() const { return m_bytesWritten; }