/*
**  HEXDUMP.C - Dump a file.
**
**  This Program Written By Paul Edwards w/ modifications by Bob Stout
**  Released to the public domain
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

static void dodump(FILE *fp, long start, long count);
static void skipb(FILE *fp, long start);

main(int argc, char **argv)
{
      FILE *fp;
      long start, count;

      if (argc < 2)
      {
            puts("Usage: HEXDUMP file_name [start] [length]");
            return (EXIT_FAILURE);
      }
      if (argc > 2)
            start = atol(*(argv + 2));
      else  start = 0L;
      if (argc > 3)
            count = atol(*(argv + 3));
      else  count = -1L;
      fp = fopen(*(argv + 1), "rb");
      if (fp == NULL)
      {
            printf("unable to open file %s for input\n", *(argv+1));
            return (EXIT_FAILURE);
      }
      skipb(fp, start);
      dodump(fp, start, count);
      return (EXIT_SUCCESS);
}

static void dodump(FILE *fp, long start, long count)
{
      int c, pos1, pos2;
      long x = 0L;
      char prtln[100];

      while (((c = fgetc(fp)) != EOF) && (x != count))
      {
            if (x%16 == 0)
            {
                  memset(prtln,' ',sizeof prtln);
                  sprintf(prtln,"%0.6X   ", start + x);
                  pos1 = 8;
                  pos2 = 45;
            }
            sprintf(prtln + pos1, "%0.2X", c);
            if (isprint(c))
                  sprintf(prtln + pos2, "%c", c);
            else  sprintf(prtln + pos2, ".");
            pos1 += 2;
            *(prtln+pos1) = ' ';
            pos2++;
            if (x % 4 == 3)
                  *(prtln + pos1++) = ' ';
            if (x % 16 == 15)
                  printf("%s\n", prtln);
            x++;
      }
      if (x % 16 != 15)
            printf("%s\n", prtln);
      return;
}

static void skipb(FILE *fp, long start)
{
      long x = 0;

      if (start == 0)
            return;
      while (x < start)
      {
            fgetc(fp);
            x++;
      }
      return;
}
'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/renesas_usbhs?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/renesas_usbhs'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/renesas_usbhs?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a'>renesas_usbhs</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/renesas_usbhs?h=nds-private-remove&amp;id=fdeea0ad87fd05e5fcb5e7b6643eabc34f29405a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>