1 files changed, 81 insertions, 0 deletions
diff --git a/lib/io/internal.h b/lib/io/internal.h
new file mode 100644
index 0000000..4ac38f5
--- /dev/null
+++ b/lib/io/internal.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * internal.h
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef INTERNAL_H
+#define INTERNAL_H
+
+#include "config.h"
+#include "compat.h"
+#include "io/istream.h"
+#include "io/ostream.h"
+#include "io/file.h"
+#include "io/xfrm.h"
+#include "io/std.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define BUFSZ (262144)
+
+typedef struct ostream_comp_t {
+	ostream_t base;
+
+	ostream_t *wrapped;
+
+	size_t inbuf_used;
+
+	sqfs_u8 inbuf[BUFSZ];
+	sqfs_u8 outbuf[BUFSZ];
+
+	int (*flush_inbuf)(struct ostream_comp_t *ostrm, bool finish);
+
+	void (*cleanup)(struct ostream_comp_t *ostrm);
+} ostream_comp_t;
+
+typedef struct istream_comp_t {
+	istream_t base;
+
+	istream_t *wrapped;
+
+	sqfs_u8 uncompressed[BUFSZ];
+
+	bool eof;
+
+	void (*cleanup)(struct istream_comp_t *strm);
+} istream_comp_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+SQFS_INTERNAL ostream_comp_t *ostream_gzip_create(const char *filename);
+
+SQFS_INTERNAL ostream_comp_t *ostream_xz_create(const char *filename);
+
+SQFS_INTERNAL ostream_comp_t *ostream_zstd_create(const char *filename);
+
+SQFS_INTERNAL ostream_comp_t *ostream_bzip2_create(const char *filename);
+
+SQFS_INTERNAL istream_comp_t *istream_gzip_create(const char *filename);
+
+SQFS_INTERNAL istream_comp_t *istream_xz_create(const char *filename);
+
+SQFS_INTERNAL istream_comp_t *istream_zstd_create(const char *filename);
+
+SQFS_INTERNAL istream_comp_t *istream_bzip2_create(const char *filename);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* INTERNAL_H */