/*
* Copyright (c) 1993 by David I. Bell
* Permission is granted to use, distribute, or modify this source,
* provided that this copyright notice remains intact.
*
* Most simple built-in commands are here.
*/
#include "sash.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <grp.h>
#include <utime.h>
#include <errno.h>
void
do_hexdump(argc, argv)
int argc;
char **argv;
{
FILE *fp;
int count;
int c;
char text[17];
unsigned char buf[130];
char *name = 0;
unsigned long pos = 0;
char *myname = argv[0];
if ( (argc > 2) && !strcmp(argv[1],"-s") ) {
pos = strtoul(argv[2], 0, 0);
argc -= 2;
argv += 2;
}
if (argc <= 1) {
fprintf(stderr, "No filename provided\n");
return;
}
name = argv[1];
fp = fopen(name, "r");
if (!fp) {
fprintf(stderr, "Failed to open file '%s': %s\n",
name, strerror(errno));
return;
}
if (pos)
fseek(fp, pos, SEEK_SET);
c = 0;
text[16] = 0;
while(!feof(fp)) {
strcmp(text, " ");
while (c < (pos & 0xf)) {
if (c == 0)
printf("%4X:", pos & 0xfffffff0);
printf( (c == 8) ? "- " : " ");
text[c] = ' ';
c++;
}
{
int p = 0;
count = fread(buf, 1, 128 - (pos % 16), fp);
if (count <= 0)
break;
while (p < count) {
c = (pos & 0xf);
if (c == 0)
printf("%4X:", pos & 0xfffffff0);
if ((buf[p] < 32) || (buf[p]>126))
text[c] = '.';
else
text[c] = buf[p];
printf( (c==15) ? " %02.2X" : (c == 8) ? "-%02.2X" : " %02.2X", buf[p]);
if (c == 15)
printf(" %s\n", text);
pos++;
p++;
}
}
if (c = (pos & 0x0f)) {
while (c < 16) {
printf( (c == 8) ? "- " : " ");
text[c] = ' ';
c++;
}
printf(" %s\n", text);
}
if (feof(fp))
break;
printf("--more--");
fflush(stdout);
fgets(buf, 80, stdin);
if (toupper(buf[0]) == 'Q')
break;
}
if (fp != stdin)
fclose(fp);
}
