66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
|
/*
|
||
|
|
* FFI wrappers for `lzma-streams`
|
||
|
|
*
|
||
|
|
* Copyright (c) 2014, Herbert Valerio Riedel <hvr@gnu.org>
|
||
|
|
*
|
||
|
|
* This code is BSD3 licensed, see ../LICENSE file for details
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <lzma.h>
|
||
|
|
#include <HsFFI.h>
|
||
|
|
|
||
|
|
HsInt
|
||
|
|
hs_lzma_init_decoder(lzma_stream *ls, HsBool autolzma, uint64_t memlimit, uint32_t flags)
|
||
|
|
{
|
||
|
|
/* recommended super-portable initialization */
|
||
|
|
const lzma_stream ls_init = LZMA_STREAM_INIT;
|
||
|
|
*ls = ls_init;
|
||
|
|
|
||
|
|
const lzma_ret ret = (autolzma ? lzma_auto_decoder : lzma_stream_decoder)(ls, memlimit, flags);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
HsInt
|
||
|
|
hs_lzma_init_encoder(lzma_stream *ls, uint32_t preset, HsInt check)
|
||
|
|
{
|
||
|
|
/* recommended super-portable initialization */
|
||
|
|
const lzma_stream ls_init = LZMA_STREAM_INIT;
|
||
|
|
*ls = ls_init;
|
||
|
|
|
||
|
|
const lzma_ret ret = lzma_easy_encoder(ls, preset, check);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
hs_lzma_done(lzma_stream *ls)
|
||
|
|
{
|
||
|
|
lzma_end(ls);
|
||
|
|
}
|
||
|
|
|
||
|
|
HsInt
|
||
|
|
hs_lzma_run(lzma_stream *const ls, const HsInt action,
|
||
|
|
const uint8_t ibuf[], const HsInt ibuf_len,
|
||
|
|
uint8_t obuf[], const HsInt obuf_len)
|
||
|
|
{
|
||
|
|
ls->next_in = ibuf;
|
||
|
|
ls->avail_in = ibuf_len;
|
||
|
|
ls->next_out = obuf;
|
||
|
|
ls->avail_out = obuf_len;
|
||
|
|
|
||
|
|
// paranoia
|
||
|
|
memset(obuf, 0, obuf_len);
|
||
|
|
|
||
|
|
const lzma_ret ret = lzma_code(ls, action);
|
||
|
|
|
||
|
|
// paranoia
|
||
|
|
ls->next_in = NULL;
|
||
|
|
ls->next_out = NULL;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|