1 files changed, 51 insertions, 0 deletions

diff --git a/heimdall-frontend/source/GZipFile.cpp b/heimdall-frontend/source/GZipFile.cpp
new file mode 100644
index 0000000..af75f39
--- /dev/null
+++ b/heimdall-frontend/source/GZipFile.cpp
@@ -0,0 +1,51 @@
+#import "GZipFile.h"
+
+using namespace HeimdallFrontend;
+
+GZipFile::GZipFile(const QString& path) :
+	file(path),
+	gzFile(nullptr)
+{
+}
+
+GZipFile::~GZipFile()
+{
+	Close();
+
+	if (temporary)
+	{
+		file.remove();
+	}
+}
+
+bool GZipFile::Open(Mode mode)
+{
+	if (!file.isOpen() && !file.open(mode == GZipFile::ReadOnly ? QFile::ReadOnly : QFile::WriteOnly))
+	{
+		return (false);
+	}
+
+	gzFile = gzdopen(file.handle(), mode == GZipFile::ReadOnly ? "rb" : "wb");
+	return (gzFile != nullptr);
+}
+
+void GZipFile::Close()
+{
+	file.close();
+	gzclose(gzFile);
+}
+
+int GZipFile::Read(void *buffer, int length)
+{
+	return (length >= 0 && !file.isWritable() ? gzread(gzFile, buffer, length) : -1);
+}
+
+bool GZipFile::Write(void *buffer, int length)
+{
+	return (length >= 0 && gzwrite(gzFile, buffer, length) == length);
+}
+
+qint64 GZipFile::Offset() const
+{
+	return gzoffset(gzFile);
+}