Cleanup: move xfrm stream wrappers to libxfrm

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

2 files changed, 0 insertions, 285 deletions

diff --git a/lib/io/src/xfrm/istream.c b/lib/io/src/xfrm/istream.c
deleted file mode 100644
index ee4b5bd..0000000
--- a/lib/io/src/xfrm/istream.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * istream.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-#include "sqfs/io.h"
-#include "sqfs/error.h"
-
-typedef struct istream_xfrm_t {
-	sqfs_istream_t base;
-
-	sqfs_istream_t *wrapped;
-	xfrm_stream_t *xfrm;
-
-	size_t buffer_offset;
-	size_t buffer_used;
-	sqfs_u8 uncompressed[BUFSZ];
-} istream_xfrm_t;
-
-static int precache(sqfs_istream_t *base)
-{
-	istream_xfrm_t *xfrm = (istream_xfrm_t *)base;
-	int ret;
-
-	if (xfrm->buffer_offset > 0 &&
-	    xfrm->buffer_offset < xfrm->buffer_used) {
-		memmove(xfrm->uncompressed,
-			xfrm->uncompressed + xfrm->buffer_offset,
-			xfrm->buffer_used - xfrm->buffer_offset);
-	}
-
-	xfrm->buffer_used -= xfrm->buffer_offset;
-	xfrm->buffer_offset = 0;
-
-	for (;;) {
-		sqfs_u32 in_off = 0, out_off = xfrm->buffer_used;
-		int mode = XFRM_STREAM_FLUSH_NONE;
-		const sqfs_u8 *ptr;
-		size_t avail;
-
-		ret = xfrm->wrapped->get_buffered_data(xfrm->wrapped, &ptr,
-						       &avail, BUFSZ);
-		if (ret < 0)
-			return ret;
-		if (ret > 0)
-			mode = XFRM_STREAM_FLUSH_FULL;
-
-		ret = xfrm->xfrm->process_data(xfrm->xfrm,
-					       ptr, avail,
-					       xfrm->uncompressed + out_off,
-					       BUFSZ - out_off,
-					       &in_off, &out_off, mode);
-
-		if (ret == XFRM_STREAM_ERROR)
-			return SQFS_ERROR_COMPRESSOR;
-
-		xfrm->buffer_used = out_off;
-		xfrm->wrapped->advance_buffer(xfrm->wrapped, in_off);
-
-		if (ret == XFRM_STREAM_BUFFER_FULL || out_off >= BUFSZ)
-			break;
-
-		if (mode == XFRM_STREAM_FLUSH_FULL)
-			break;
-	}
-
-	return 0;
-}
-
-static int xfrm_get_buffered_data(sqfs_istream_t *strm, const sqfs_u8 **out,
-				  size_t *size, size_t want)
-{
-	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
-
-	if (want > BUFSZ)
-		want = BUFSZ;
-
-	if (xfrm->buffer_used == 0 ||
-	    (xfrm->buffer_used - xfrm->buffer_offset) < want) {
-		int ret = precache(strm);
-		if (ret)
-			return ret;
-	}
-
-	*out = xfrm->uncompressed + xfrm->buffer_offset;
-	*size = xfrm->buffer_used - xfrm->buffer_offset;
-	return (*size == 0) ? 1 : 0;
-}
-
-static void xfrm_advance_buffer(sqfs_istream_t *strm, size_t count)
-{
-	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
-
-	assert(count <= xfrm->buffer_used);
-
-	xfrm->buffer_offset += count;
-
-	assert(xfrm->buffer_offset <= xfrm->buffer_used);
-}
-
-static const char *xfrm_get_filename(sqfs_istream_t *strm)
-{
-	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
-
-	return xfrm->wrapped->get_filename(xfrm->wrapped);
-}
-
-static void xfrm_destroy(sqfs_object_t *obj)
-{
-	istream_xfrm_t *xfrm = (istream_xfrm_t *)obj;
-
-	sqfs_drop(xfrm->xfrm);
-	sqfs_drop(xfrm->wrapped);
-	free(xfrm);
-}
-
-sqfs_istream_t *istream_xfrm_create(sqfs_istream_t *strm, xfrm_stream_t *xfrm)
-{
-	istream_xfrm_t *stream = calloc(1, sizeof(*stream));
-	sqfs_istream_t *base = (sqfs_istream_t *)stream;
-
-	if (stream == NULL)
-		goto fail;
-
-	sqfs_object_init(stream, xfrm_destroy, NULL);
-
-	stream->wrapped = sqfs_grab(strm);
-	stream->xfrm = sqfs_grab(xfrm);
-
-	base->get_buffered_data = xfrm_get_buffered_data;
-	base->advance_buffer = xfrm_advance_buffer;
-	base->get_filename = xfrm_get_filename;
-	return base;
-fail:
-	fprintf(stderr, "%s: error initializing decompressor stream.\n",
-		strm->get_filename(strm));
-	return NULL;
-}
diff --git a/lib/io/src/xfrm/ostream.c b/lib/io/src/xfrm/ostream.c
deleted file mode 100644
index 2b42084..0000000
--- a/lib/io/src/xfrm/ostream.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * ostream.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-#include "sqfs/io.h"
-#include "sqfs/error.h"
-
-typedef struct ostream_xfrm_t {
-	sqfs_ostream_t base;
-
-	sqfs_ostream_t *wrapped;
-	xfrm_stream_t *xfrm;
-
-	size_t inbuf_used;
-
-	sqfs_u8 inbuf[BUFSZ];
-	sqfs_u8 outbuf[BUFSZ];
-} ostream_xfrm_t;
-
-static int flush_inbuf(ostream_xfrm_t *xfrm, bool finish)
-{
-	const sqfs_u32 avail_out = sizeof(xfrm->outbuf);
-	const sqfs_u32 avail_in = xfrm->inbuf_used;
-	const int mode = finish ? XFRM_STREAM_FLUSH_FULL :
-		XFRM_STREAM_FLUSH_NONE;
-	sqfs_u32 off_in = 0, off_out = 0;
-	int ret, ioret;
-
-	while (finish || off_in < avail_in) {
-		ret = xfrm->xfrm->process_data(xfrm->xfrm,
-					       xfrm->inbuf + off_in,
-					       avail_in - off_in,
-					       xfrm->outbuf + off_out,
-					       avail_out - off_out,
-					       &off_in, &off_out, mode);
-
-		if (ret == XFRM_STREAM_ERROR)
-			return SQFS_ERROR_COMPRESSOR;
-
-		ioret = xfrm->wrapped->append(xfrm->wrapped,
-					      xfrm->outbuf, off_out);
-		if (ioret)
-			return ioret;
-
-		off_out = 0;
-
-		if (ret == XFRM_STREAM_END)
-			break;
-	}
-
-	if (off_in < avail_in) {
-		memmove(xfrm->inbuf, xfrm->inbuf + off_in, avail_in - off_in);
-		xfrm->inbuf_used -= off_in;
-	} else {
-		xfrm->inbuf_used = 0;
-	}
-
-	return 0;
-}
-
-static int xfrm_append(sqfs_ostream_t *strm, const void *data, size_t size)
-{
-	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
-	size_t diff;
-
-	while (size > 0) {
-		if (xfrm->inbuf_used >= BUFSZ) {
-			int ret = flush_inbuf(xfrm, false);
-			if (ret)
-				return ret;
-		}
-
-		diff = BUFSZ - xfrm->inbuf_used;
-
-		if (diff > size)
-			diff = size;
-
-		if (data == NULL) {
-			memset(xfrm->inbuf + xfrm->inbuf_used, 0, diff);
-		} else {
-			memcpy(xfrm->inbuf + xfrm->inbuf_used, data, diff);
-			data = (const char *)data + diff;
-		}
-
-		xfrm->inbuf_used += diff;
-		size -= diff;
-	}
-
-	return 0;
-}
-
-static int xfrm_flush(sqfs_ostream_t *strm)
-{
-	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
-
-	if (xfrm->inbuf_used > 0) {
-		int ret = flush_inbuf(xfrm, true);
-		if (ret)
-			return ret;
-	}
-
-	return xfrm->wrapped->flush(xfrm->wrapped);
-}
-
-static const char *xfrm_get_filename(sqfs_ostream_t *strm)
-{
-	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
-
-	return xfrm->wrapped->get_filename(xfrm->wrapped);
-}
-
-static void xfrm_destroy(sqfs_object_t *obj)
-{
-	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)obj;
-
-	sqfs_drop(xfrm->wrapped);
-	sqfs_drop(xfrm->xfrm);
-	free(xfrm);
-}
-
-sqfs_ostream_t *ostream_xfrm_create(sqfs_ostream_t *strm, xfrm_stream_t *xfrm)
-{
-	ostream_xfrm_t *stream = calloc(1, sizeof(*stream));
-	sqfs_ostream_t *base = (sqfs_ostream_t *)stream;
-
-	if (stream == NULL)
-		goto fail;
-
-	sqfs_object_init(stream, xfrm_destroy, NULL);
-
-	stream->wrapped = sqfs_grab(strm);
-	stream->xfrm = sqfs_grab(xfrm);
-	stream->inbuf_used = 0;
-	base->append = xfrm_append;
-	base->flush = xfrm_flush;
-	base->get_filename = xfrm_get_filename;
-	return base;
-fail:
-	fprintf(stderr, "%s: error initializing compressor.\n",
-		strm->get_filename(strm));
-	return NULL;
-}