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/* reader.h - internl definitions for the reder object.
* Copyright (C) 2001 g10 Code GmbH
*
* This file is part of KSBA.
*
* KSBA is free software; you can redistribute it and/or modify
* it under the terms of 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.
*
* KSBA 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 a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifndef READER_H
#define READER_H 1
#include <stdio.h>
enum reader_type {
READER_TYPE_NONE = 0,
READER_TYPE_MEM,
READER_TYPE_FD,
READER_TYPE_FILE,
READER_TYPE_CB
};
struct ksba_reader_s {
int eof;
int error; /* If an error occured, takes the value of errno. */
unsigned long nread;
struct {
unsigned char *buf;
size_t size; /* allocated size */
size_t length; /* used size */
size_t readpos; /* offset where to start the next read */
} unread;
enum reader_type type;
union {
struct {
unsigned char *buffer;
size_t size;
size_t readpos;
} mem; /* for READER_TYPE_MEM */
int fd; /* for READER_TYPE_FD */
FILE *file; /* for READER_TYPE_FILE */
struct {
int (*fnc)(void*,char *,size_t,size_t*);
void *value;
} cb; /* for READER_TYPE_CB */
} u;
};
#endif /*READER_H*/

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