/* output.h

   Copyright (C) 2002, 2003 Niels Möller

   This file is part of GNU Nettle.

   GNU Nettle is free software: you can redistribute it and/or
   modify it under the terms of either:

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at your
       option) any later version.

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your
       option) any later version.

   or both in parallel, as here.

   GNU Nettle is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received copies of the GNU General Public License and
   the GNU Lesser General Public License along with this program.  If
   not, see http://www.gnu.org/licenses/.
*/

#ifndef NETTLE_TOOLS_OUTPUT_H_INCLUDED
#define NETTLE_TOOLS_OUTPUT_H_INCLUDED

#include "misc.h"

#include "base64.h"
#include "buffer.h"
#include "nettle-meta.h"

#include <stdio.h>

struct sexp_output
{
  FILE *f;

  unsigned line_width;
  
  const struct nettle_armor *coding;
  unsigned coding_indent;

  int prefer_hex;
  
  const struct nettle_hash *hash;
  void *ctx;
  
  /* NOTE: There's no context for hex encoding, the state argument to
     encode_update is ignored */
  struct base64_decode_ctx base64;
  
  unsigned pos;
  int soft_newline;
};

void
sexp_output_init(struct sexp_output *output, FILE *f,
		 unsigned width, int prefer_hex);

void
sexp_output_hash_init(struct sexp_output *output,
		      const struct nettle_hash *hash, void *ctx);

void 
sexp_put_newline(struct sexp_output *output,
		 unsigned indent);

void
sexp_put_soft_newline(struct sexp_output *output,
		      unsigned indent);

void
sexp_put_char(struct sexp_output *output, uint8_t c);

void
sexp_put_data(struct sexp_output *output,
	      unsigned length, const uint8_t *data);

void
sexp_put_code_start(struct sexp_output *output,
		    const struct nettle_armor *coding);

void
sexp_put_code_end(struct sexp_output *output);

void
sexp_put_string(struct sexp_output *output, enum sexp_mode mode,
		struct nettle_buffer *string);

void
sexp_put_digest(struct sexp_output *output);

#endif /* NETTLE_TOOLS_OUTPUT_H_INCLUDED */