stream_flags_encoder.c File Reference

Encodes Stream Header and Stream Footer for .xz files. More...

#include "stream_flags_common.h"

Go to the source code of this file.

Functions
static bool	stream_flags_encode (const lzma_stream_flags *options, uint8_t *out)
	LZMA_API (lzma_ret)

Detailed Description

Encodes Stream Header and Stream Footer for .xz files.

Definition in file stream_flags_encoder.c.

Function Documentation

LZMA_API()

LZMA_API

(

lzma_ret

)

Definition at line 29 of file stream_flags_encoder.c.

{
    assert(sizeof(lzma_header_magic) + LZMA_STREAM_FLAGS_SIZE
            + 4 == LZMA_STREAM_HEADER_SIZE);
 
    if (options->version != 0)
        return LZMA_OPTIONS_ERROR;
 
    // Magic
    memcpy(out, lzma_header_magic, sizeof(lzma_header_magic));
 
    // Stream Flags
    if (stream_flags_encode(options, out + sizeof(lzma_header_magic)))
        return LZMA_PROG_ERROR;
 
    // CRC32 of the Stream Header
    const uint32_t crc = lzma_crc32(out + sizeof(lzma_header_magic),
            LZMA_STREAM_FLAGS_SIZE, 0);
 
    write32le(out + sizeof(lzma_header_magic) + LZMA_STREAM_FLAGS_SIZE,
            crc);
 
    return LZMA_OK;
}

References assert(), lzma_header_magic, LZMA_OK, LZMA_OPTIONS_ERROR, LZMA_PROG_ERROR, LZMA_STREAM_FLAGS_SIZE, LZMA_STREAM_HEADER_SIZE, memcpy(), options, out, stream_flags_encode(), and write32le.

stream_flags_encode()

static bool stream_flags_encode ( const lzma_stream_flags *  options, uint8_t *  out  )

static

Definition at line 17 of file stream_flags_encoder.c.

{
    if ((unsigned int)(options->check) > LZMA_CHECK_ID_MAX)
        return true;
 
    out[0] = 0x00;
    out[1] = options->check;
 
    return false;
}

References LZMA_CHECK_ID_MAX, options, and out.

Referenced by LZMA_API().