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/*****************************************************************************\
* hexdump.h
* $Id$
\*****************************************************************************/
#ifndef _HEXDUMP_H
#define _HEXDUMP_H
/* hexdump.h
*
* Copyright (C) 2002
* David S. Peterson. All rights reserved.
*
* Author: David S. Peterson <dave_peterson@pobox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions, and the entire permission notice, including
* the following disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions, and the entire permission notice,
* including the following disclaimer in the documentation and/or other
* materials provided with the distribution.
* 3. The name(s) of the author(s) may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of the GNU
* General Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is necessary due
* to a potential bad interaction between the GPL and the restrictions
* contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <sys/types.h>
#include <stdio.h>
typedef int (*is_printable_fn_t) (unsigned char c);
/*--------------------------------------------------------------------------
* hexdump_format_t
*
* This specifies how the output of the 'hexdump' function should look.
*
* fields:
* bytes_per_line: the number of data bytes to display per line of
* output
* addrprint_width: Each line of output begins with the address of the
* first data byte displayed on that line. This
* specifies the number of bytes wide the address
* should be displayed as. This value must be from 1
* to 8.
* indent: This is a string to display at the start of each
* output line. Its purpose is to indent the output.
* sep1: This is a string to display between the address and
* the bytes of data displayed in hex. It serves as a
* separator.
* sep2: This is a string to display between individual hex
* values. It serves as a separator.
* sep3: This is a string to display between the bytes of
* data in hex and the bytes of data displayed as
* characters. It serves as a separator.
* nonprintable: This is a substitute character to display in place
* of nonprintable characters.
* is_printable_fn: This is a user-supplied function that takes a byte
* value as input and returns a boolean value
* indicating whether the corresponding character is
* printable. A value of NULL will cause
* default_is_printable_fn to be used.
*--------------------------------------------------------------------------*/
typedef struct
{ int bytes_per_line;
int addrprint_width;
const char *indent;
const char *sep1;
const char *sep2;
const char *sep3;
unsigned char nonprintable;
is_printable_fn_t is_printable_fn;
}
hexdump_format_t;
/*--------------------------------------------------------------------------
* hexdump
*
* Write a hex dump of 'mem' to 'outfile'.
*
* parameters:
* mem: a pointer to the memory to display
* bytes: the number of bytes of data to display
* addrprint_start: The address to associate with the first byte of
* data. For instance, a value of 0 indicates that the
* first byte displayed should be labeled as byte 0.
* outfile: The place where the hex dump should be written.
* For instance, stdout or stderr may be passed here.
* format: A structure specifying how the hex dump should be
* formatted.
*--------------------------------------------------------------------------*/
void hexdump (const void *mem, int bytes, uint64_t addrprint_start,
FILE *outfile, const hexdump_format_t *format);
/*--------------------------------------------------------------------------
* default_is_printable_fn
*
* Determine whether the input character is printable. The proper behavior
* for this type of function may be system-dependent. This function appears
* to work well on a Linux system. However, if it is not adequate for your
* purposes, you can write your own.
*
* parameters:
* c: the input character
*
* return value:
* Return 1 if the input character is printable. Otherwise return 0.
*--------------------------------------------------------------------------*/
int default_is_printable_fn (unsigned char c);
#endif /* _HEXDUMP_H */
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