1 files changed, 87 insertions, 0 deletions
diff --git a/src/liblzma/common/easy_encoder.c b/src/liblzma/common/easy_encoder.c
new file mode 100644
index 00000000..4a6709c6
--- /dev/null
+++ b/src/liblzma/common/easy_encoder.c
@@ -0,0 +1,87 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       easy_encoder.c
+/// \brief      Easy .xz Stream encoder initialization
+//
+//  Copyright (C) 2008 Lasse Collin
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "easy_preset.h"
+#include "stream_encoder.h"
+
+
+struct lzma_coder_s {
+	lzma_next_coder stream_encoder;
+	lzma_options_easy opt_easy;
+};
+
+
+static lzma_ret
+easy_encode(lzma_coder *coder, lzma_allocator *allocator,
+		const uint8_t *restrict in, size_t *restrict in_pos,
+		size_t in_size, uint8_t *restrict out,
+		size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+	return coder->stream_encoder.code(
+			coder->stream_encoder.coder, allocator,
+			in, in_pos, in_size, out, out_pos, out_size, action);
+}
+
+
+static void
+easy_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+	lzma_next_end(&coder->stream_encoder, allocator);
+	lzma_free(coder, allocator);
+	return;
+}
+
+
+static lzma_ret
+easy_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+		uint32_t preset, lzma_check check)
+{
+	lzma_next_coder_init(easy_encoder_init, next, allocator);
+
+	if (next->coder == NULL) {
+		next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+		if (next->coder == NULL)
+			return LZMA_MEM_ERROR;
+
+		next->code = &easy_encode;
+		next->end = &easy_encoder_end;
+
+		next->coder->stream_encoder = LZMA_NEXT_CODER_INIT;
+	}
+
+	if (lzma_easy_preset(&next->coder->opt_easy, preset))
+		return LZMA_OPTIONS_ERROR;
+
+	return lzma_stream_encoder_init(&next->coder->stream_encoder,
+			allocator, next->coder->opt_easy.filters, check);
+}
+
+
+extern LZMA_API(lzma_ret)
+lzma_easy_encoder(lzma_stream *strm, uint32_t preset, lzma_check check)
+{
+	lzma_next_strm_init(easy_encoder_init, strm, preset, check);
+
+	strm->internal->supported_actions[LZMA_RUN] = true;
+	strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+	strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
+	strm->internal->supported_actions[LZMA_FINISH] = true;
+
+	return LZMA_OK;
+}