54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* Copyright (C) 2012 Reto Buerki
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* Copyright (C) 2012 Adrian-Ken Rueegsegger
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <utils/debug.h>
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#include "tkm_utils.h"
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/* Generic variable-length sequence */
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struct sequence_type {
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uint32_t size;
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byte_t data[];
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};
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typedef struct sequence_type sequence_type;
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void sequence_to_chunk(const byte_t * const first, const uint32_t len,
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chunk_t * const chunk)
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{
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*chunk = chunk_alloc(len);
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memcpy(chunk->ptr, first, len);
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}
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void chunk_to_sequence(const chunk_t * const chunk, void *sequence,
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const uint32_t typelen)
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{
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const uint32_t seqlenmax = typelen - sizeof(uint32_t);
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sequence_type *seq = sequence;
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memset(sequence, 0, typelen);
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if (chunk->len > seqlenmax)
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{
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DBG1(DBG_LIB, "chunk too large to fit into sequence %d > %d, limiting"
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" to %d bytes", chunk->len, seqlenmax, seqlenmax);
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seq->size = seqlenmax;
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}
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else
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{
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seq->size = chunk->len;
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}
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memcpy(seq->data, chunk->ptr, seq->size);
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}
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