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-rw-r--r--lib/comp/lzma.c90
1 files changed, 0 insertions, 90 deletions
diff --git a/lib/comp/lzma.c b/lib/comp/lzma.c
deleted file mode 100644
index 3169c33..0000000
--- a/lib/comp/lzma.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <lzma.h>
-
-#include "internal.h"
-
-typedef struct {
- compressor_t base;
- size_t block_size;
-} lzma_compressor_t;
-
-static ssize_t lzma_comp_block(compressor_t *base, const uint8_t *in,
- size_t size, uint8_t *out, size_t outsize)
-{
- lzma_compressor_t *lzma = (lzma_compressor_t *)base;
- lzma_filter filters[5];
- lzma_options_lzma opt;
- size_t written = 0;
- lzma_ret ret;
-
- if (lzma_lzma_preset(&opt, LZMA_PRESET_DEFAULT)) {
- fputs("error initializing LZMA options\n", stderr);
- return -1;
- }
-
- opt.dict_size = lzma->block_size;
-
- filters[0].id = LZMA_FILTER_LZMA2;
- filters[0].options = &opt;
-
- filters[1].id = LZMA_VLI_UNKNOWN;
- filters[1].options = NULL;
-
- ret = lzma_stream_buffer_encode(filters, LZMA_CHECK_CRC32, NULL,
- in, size, out, &written, outsize);
-
- if (ret == LZMA_OK)
- return (written >= size) ? 0 : written;
-
- if (ret != LZMA_BUF_ERROR) {
- fputs("lzma block compress failed\n", stderr);
- return -1;
- }
-
- return 0;
-}
-
-static ssize_t lzma_uncomp_block(compressor_t *base, const uint8_t *in,
- size_t size, uint8_t *out, size_t outsize)
-{
- uint64_t memlimit = 32 * 1024 * 1024;
- size_t dest_pos = 0;
- size_t src_pos = 0;
- lzma_ret ret;
- (void)base;
-
- ret = lzma_stream_buffer_decode(&memlimit, 0, NULL,
- in, &src_pos, size,
- out, &dest_pos, outsize);
-
- if (ret == LZMA_OK && size == src_pos)
- return (ssize_t)dest_pos;
-
- fputs("lzma block extract failed\n", stderr);
- return -1;
-}
-
-static void lzma_destroy(compressor_t *base)
-{
- free(base);
-}
-
-compressor_t *create_lzma_compressor(bool compress, size_t block_size)
-{
- lzma_compressor_t *lzma = calloc(1, sizeof(*lzma));
- compressor_t *base = (compressor_t *)lzma;
-
- if (lzma == NULL) {
- perror("creating lzma stream");
- return NULL;
- }
-
- lzma->block_size = block_size;
- base->destroy = lzma_destroy;
- base->do_block = compress ? lzma_comp_block : lzma_uncomp_block;
- return base;
-}