util/nvramtool/hexdump.h

   1 /*****************************************************************************\
   2  * hexdump.h
   3 \*****************************************************************************/
   4
   5 #ifndef _HEXDUMP_H
   6 #define _HEXDUMP_H
   7
   8 /* hexdump.h
   9  *
  10  * Copyright (C) 2002
  11  *     David S. Peterson.  All rights reserved.
  12  *
  13  * Author: David S. Peterson <dave_peterson@pobox.com>
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions are
  17  * met:
  18  * 1. Redistributions of source code must retain the above copyright notice,
  19  *    this list of conditions, and the entire permission notice, including
  20  *    the following disclaimer of warranties.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions, and the entire permission notice,
  23  *    including the following disclaimer in the documentation and/or other
  24  *    materials provided with the distribution.
  25  * 3. The name(s) of the author(s) may not be used to endorse or promote
  26  *    products derived from this software without specific prior written
  27  *    permission.
  28  *
  29  * ALTERNATIVELY, this product may be distributed under the terms of the GNU
  30  * General Public License, in which case the provisions of the GPL are
  31  * required INSTEAD OF the above restrictions.  (This clause is necessary due
  32  * to a potential bad interaction between the GPL and the restrictions
  33  * contained in a BSD-style copyright.)
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  36  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  37  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
  38  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  39  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  40  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  44  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  45  */
  46
  47 #include <stdint.h>
  48 #include <sys/types.h>
  49 #include <stdio.h>
  50
  51 /*--------------------------------------------------------------------------
  52  * hexdump_format_t
  53  *
  54  * This specifies how the output of the 'hexdump' function should look.
  55  *
  56  * fields:
  57  *     bytes_per_line:  the number of data bytes to display per line of
  58  *                      output
  59  *     addrprint_width: Each line of output begins with the address of the
  60  *                      first data byte displayed on that line.  This
  61  *                      specifies the number of bytes wide the address
  62  *                      should be displayed as.  This value must be from 1
  63  *                      to 8.
  64  *     indent:          This is a string to display at the start of each
  65  *                      output line.  Its purpose is to indent the output.
  66  *     sep1:            This is a string to display between the address and
  67  *                      the bytes of data displayed in hex.  It serves as a
  68  *                      separator.
  69  *     sep2:            This is a string to display between individual hex
  70  *                      values.  It serves as a separator.
  71  *     sep3:            This is a string to display between the bytes of
  72  *                      data in hex and the bytes of data displayed as
  73  *                      characters.  It serves as a separator.
  74  *     nonprintable:    This is a substitute character to display in place
  75  *                      of nonprintable characters.
  76  *--------------------------------------------------------------------------*/
  77 typedef struct {
  78         int bytes_per_line;
  79         int addrprint_width;
  80         const char *indent;
  81         const char *sep1;
  82         const char *sep2;
  83         const char *sep3;
  84         unsigned char nonprintable;
  85 } hexdump_format_t;
  86
  87 /*--------------------------------------------------------------------------
  88  * hexdump
  89  *
  90  * Write a hex dump of 'mem' to 'outfile'.
  91  *
  92  * parameters:
  93  *     mem:             a pointer to the memory to display
  94  *     bytes:           the number of bytes of data to display
  95  *     addrprint_start: The address to associate with the first byte of
  96  *                      data.  For instance, a value of 0 indicates that the
  97  *                      first byte displayed should be labeled as byte 0.
  98  *     outfile:         The place where the hex dump should be written.
  99  *                      For instance, stdout or stderr may be passed here.
 100  *     format:          A structure specifying how the hex dump should be
 101  *                      formatted.
 102  *--------------------------------------------------------------------------*/
 103 void hexdump(const void *mem, int bytes, uint64_t addrprint_start,
 104              FILE * outfile, const hexdump_format_t * format);
 105
 106 #endif                          /* _HEXDUMP_H */