full_flush.c File Reference

Encode files using LZMA_FULL_FLUSH. More...

#include "sysdefs.h"
#include "lzma.h"
#include <stdio.h>

Go to the source code of this file.

Macros
#define	CHUNK   64

Functions
static void	encode (size_t size, lzma_action action)
int	main (int argc, char **argv)

Variables
static lzma_stream	strm = LZMA_STREAM_INIT
static FILE *	file_in

Detailed Description

Encode files using LZMA_FULL_FLUSH.

Definition in file full_flush.c.

Macro Definition Documentation

CHUNK

#define CHUNK   64

Definition at line 17 of file full_flush.c.

Function Documentation

encode()

static void encode ( size_t  size, lzma_action  action  )

static

Definition at line 25 of file full_flush.c.

{
    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);
    }
}

References test-lz4-speed::action, lzma_stream::avail_in, lzma_stream::avail_out, CHUNK, test-lz4-list::exit, file_in, in, LZMA_OK, LZMA_RUN, LZMA_STREAM_END, my_min, lzma_stream::next_in, lzma_stream::next_out, out, and strm.

Referenced by const_generator::gen(), LZ4HC_compress_optimal(), main(), sdb_querys(), walk_namespace(), and zip_encryption_method_supported().

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 64 of file full_flush.c.

{
    file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
 
 
    // Config
    lzma_options_lzma opt_lzma;
    if (lzma_lzma_preset(&opt_lzma, 1)) {
        fprintf(stderr, "preset failed\n");
        exit(1);
    }
    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);
    }
 
//  if (lzma_easy_encoder(&strm, 1)) {
//      fprintf(stderr, "init failed\n");
//      exit(1);
//  }
 
    // Encoding
    encode(0, LZMA_FULL_FLUSH);
    encode(6, LZMA_FULL_FLUSH);
    encode(0, LZMA_FULL_FLUSH);
    encode(7, LZMA_FULL_FLUSH);
    encode(0, LZMA_FULL_FLUSH);
    encode(0, LZMA_FINISH);
 
    // Clean up
    lzma_end(&strm);
 
    return 0;
}

References argv, encode(), test-lz4-list::exit, file_in, filters, lzma_filter::id, LZMA_CHECK_CRC32, LZMA_FILTER_LZMA2, LZMA_FILTERS_MAX, LZMA_FINISH, LZMA_FULL_FLUSH, LZMA_OK, LZMA_VLI_UNKNOWN, opt_lzma, lzma_filter::options, and strm.

Variable Documentation

file_in

FILE* file_in

static

Definition at line 21 of file full_flush.c.

Referenced by encode(), and main().

strm

lzma_stream strm = LZMA_STREAM_INIT

static

Definition at line 20 of file full_flush.c.

Referenced by coder_loop(), compress(), decoder_loop(), decoder_loop_ret(), decompress(), def(), deflate(), deflate_index_build(), deflate_index_extract(), deflateBound(), deflateEnd(), deflateGetDictionary(), deflateInit2_(), deflateInit_(), deflateParams(), deflatePending(), deflatePrime(), deflateReset(), deflateResetKeep(), deflateSetDictionary(), deflateSetHeader(), deflateStateCheck(), deflateTune(), encode(), flush_pending(), gunpipe(), gunzip(), gz_avail(), gz_comp(), gz_decomp(), gz_fetch(), gz_init(), gz_look(), gz_zero(), gzcopy(), gzip_normalize(), gzprintf(), gzputc(), gzscan(), gzsetparams(), gztack(), inf(), inflate(), inflate_fast(), inflateBack(), inflateBack9(), inflateBack9End(), inflateBack9Init_(), inflateBackEnd(), inflateBackInit_(), inflateCodesUsed(), inflateEnd(), inflateGetDictionary(), inflateGetHeader(), inflateInit2_(), inflateInit_(), inflateMark(), inflatePrime(), inflateReset(), inflateReset2(), inflateResetKeep(), inflateSetDictionary(), inflateStateCheck(), inflateSync(), inflateSyncPoint(), inflateUndermine(), inflateValidate(), init_decoder(), init_encoder(), log_compress(), lunpipe(), LZMA_API(), lzma_strm_init(), main(), message_progress_start(), parse_indexes(), read_buf(), test_code(), test_corrupt(), uncompress(), updatewindow(), xz_compress(), xz_decompress(), and zpull().