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* A bare-bones string stream.
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/* nettle, low-level cryptographics library
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* Copyright (C) 2002 Niels M�ller
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* The nettle library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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* The nettle library 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 Lesser General Public
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* License for more details.
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* You should have received a copy of the GNU Lesser General Public License
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* along with the nettle library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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#ifndef NETTLE_BUFFER_H_INCLUDED
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#define NETTLE_BUFFER_H_INCLUDED
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nettle_realloc_func *realloc;
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/* Initializes a buffer that uses plain realloc */
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nettle_buffer_init(struct nettle_buffer *buffer);
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nettle_buffer_init_realloc(struct nettle_buffer *buffer,
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nettle_realloc_func realloc);
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/* Initializes a buffer of fix size */
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nettle_buffer_init_size(struct nettle_buffer *buffer,
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unsigned length, uint8_t *space);
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nettle_buffer_clear(struct nettle_buffer *buffer);
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/* Resets the buffer, without freeing the buffer space. */
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nettle_buffer_reset(struct nettle_buffer *buffer);
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nettle_buffer_grow(struct nettle_buffer *buffer,
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#define NETTLE_BUFFER_PUTC(buffer, c) \
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( (((buffer)->size < (buffer)->alloc) || nettle_buffer_grow((buffer), 1)) \
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&& ((buffer)->contents[(buffer)->size++] = (c), 1) )
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nettle_buffer_write(struct nettle_buffer *buffer,
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unsigned length, const uint8_t *data);
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/* Like nettle_buffer_write, but instead of copying data to the
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* buffer, it returns a pointer to the area where the caller can copy
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* the data. The pointer is valid only until the next call that can
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* reallocate the buffer. */
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nettle_buffer_space(struct nettle_buffer *buffer,
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/* Copy the contents of SRC to the end of DST. */
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nettle_buffer_copy(struct nettle_buffer *dst,
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const struct nettle_buffer *src);
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#endif /* NETTLE_BUFFER_H_INCLUDED */