mirror of
https://git.tukaani.org/xz.git
synced 2024-04-04 12:36:23 +02:00
689e0228ba
Translations and doc/xz-file-format.txt and doc/lzma-file-format.txt were not touched. COPYING.0BSD was added.
122 lines
2.5 KiB
C
122 lines
2.5 KiB
C
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
/// \file sync_flush.c
|
|
/// \brief Encode files using LZMA_SYNC_FLUSH
|
|
//
|
|
// Author: Lasse Collin
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "sysdefs.h"
|
|
#include "lzma.h"
|
|
#include <stdio.h>
|
|
|
|
#define CHUNK 64
|
|
|
|
|
|
static lzma_stream strm = LZMA_STREAM_INIT;
|
|
static FILE *file_in;
|
|
|
|
|
|
static void
|
|
encode(size_t size, lzma_action action)
|
|
{
|
|
uint8_t in[CHUNK];
|
|
uint8_t out[CHUNK];
|
|
lzma_ret ret;
|
|
|
|
do {
|
|
if (strm.avail_in == 0 && size > 0) {
|
|
const size_t amount = my_min(size, CHUNK);
|
|
strm.avail_in = fread(in, 1, amount, file_in);
|
|
strm.next_in = in;
|
|
size -= amount; // Intentionally not using avail_in.
|
|
}
|
|
|
|
strm.next_out = out;
|
|
strm.avail_out = CHUNK;
|
|
|
|
ret = lzma_code(&strm, size == 0 ? action : LZMA_RUN);
|
|
|
|
if (ret != LZMA_OK && ret != LZMA_STREAM_END) {
|
|
fprintf(stderr, "%s:%u: %s: ret == %d\n",
|
|
__FILE__, __LINE__, __func__, ret);
|
|
exit(1);
|
|
}
|
|
|
|
fwrite(out, 1, CHUNK - strm.avail_out, stdout);
|
|
|
|
} while (size > 0 || strm.avail_out == 0);
|
|
|
|
if ((action == LZMA_RUN && ret != LZMA_OK)
|
|
|| (action != LZMA_RUN && ret != LZMA_STREAM_END)) {
|
|
fprintf(stderr, "%s:%u: %s: ret == %d\n",
|
|
__FILE__, __LINE__, __func__, ret);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
|
|
|
|
// Config
|
|
lzma_options_lzma opt_lzma = {
|
|
.dict_size = 1U << 16,
|
|
.lc = LZMA_LC_DEFAULT,
|
|
.lp = LZMA_LP_DEFAULT,
|
|
.pb = LZMA_PB_DEFAULT,
|
|
.preset_dict = NULL,
|
|
.mode = LZMA_MODE_NORMAL,
|
|
.nice_len = 32,
|
|
.mf = LZMA_MF_HC3,
|
|
.depth = 0,
|
|
};
|
|
|
|
lzma_options_delta opt_delta = {
|
|
.dist = 16
|
|
};
|
|
|
|
lzma_filter filters[LZMA_FILTERS_MAX + 1];
|
|
filters[0].id = LZMA_FILTER_LZMA2;
|
|
filters[0].options = &opt_lzma;
|
|
filters[1].id = LZMA_VLI_UNKNOWN;
|
|
|
|
// Init
|
|
if (lzma_stream_encoder(&strm, filters, LZMA_CHECK_CRC32) != LZMA_OK) {
|
|
fprintf(stderr, "init failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
// Encoding
|
|
encode(0, LZMA_SYNC_FLUSH);
|
|
encode(6, LZMA_SYNC_FLUSH);
|
|
encode(0, LZMA_SYNC_FLUSH);
|
|
encode(7, LZMA_SYNC_FLUSH);
|
|
encode(0, LZMA_SYNC_FLUSH);
|
|
encode(0, LZMA_FINISH);
|
|
|
|
/*
|
|
encode(53, LZMA_SYNC_FLUSH);
|
|
opt_lzma.lc = 2;
|
|
opt_lzma.lp = 1;
|
|
opt_lzma.pb = 0;
|
|
if (lzma_filters_update(&strm, filters) != LZMA_OK) {
|
|
fprintf(stderr, "update failed\n");
|
|
exit(1);
|
|
}
|
|
encode(404, LZMA_FINISH);
|
|
*/
|
|
|
|
// Clean up
|
|
lzma_end(&strm);
|
|
|
|
return 0;
|
|
|
|
// Prevent useless warnings so we don't need to have special CFLAGS
|
|
// to disable -Werror.
|
|
(void)opt_lzma;
|
|
(void)opt_delta;
|
|
}
|