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/* vi: set sw=4 ts=4: */
/*
* hexdump implementation for busybox
* Based on code from util-linux v 2.11l
*
* Copyright (c) 1989
* The Regents of the University of California. All rights reserved.
*
* Licensed under GPLv2 or later, see file License in this tarball for details.
*/
#include <getopt.h>
#include "libbb.h"
#include "dump.h"
/* This is a NOEXEC applet. Be very careful! */
static void bb_dump_addfile(char *name)
{
char *p;
FILE *fp;
char *buf;
fp = xfopen(name, "r");
while ((buf = xmalloc_getline(fp)) != NULL) {
p = skip_whitespace(buf);
if (*p && (*p != '#')) {
bb_dump_add(p);
}
free(buf);
}
fclose(fp);
}
static const char *const add_strings[] = {
"\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"", /* b */
"\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"", /* c */
"\"%07.7_ax \" 8/2 \" %05u \" \"\\n\"", /* d */
"\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"", /* o */
"\"%07.7_ax \" 8/2 \" %04x \" \"\\n\"", /* x */
};
static const char add_first[] ALIGN1 = "\"%07.7_Ax\n\"";
static const char hexdump_opts[] ALIGN1 = "bcdoxCe:f:n:s:v";
static const struct suffix_mult suffixes[] = {
{ "b", 512 },
{ "k", 1024 },
{ "m", 1024*1024 },
{ }
};
int hexdump_main(int argc, char **argv);
int hexdump_main(int argc, char **argv)
{
const char *p;
int ch;
bb_dump_vflag = FIRST;
bb_dump_length = -1;
while ((ch = getopt(argc, argv, hexdump_opts)) > 0) {
p = strchr(hexdump_opts, ch);
if (!p)
bb_show_usage();
if ((p - hexdump_opts) < 5) {
bb_dump_add(add_first);
bb_dump_add(add_strings[(int)(p - hexdump_opts)]);
} else if (ch == 'C') {
bb_dump_add("\"%08.8_Ax\n\"");
bb_dump_add("\"%08.8_ax \" 8/1 \"%02x \" \" \" 8/1 \"%02x \" ");
bb_dump_add("\" |\" 16/1 \"%_p\" \"|\\n\"");
} else {
/* Save a little bit of space below by omitting the 'else's. */
if (ch == 'e') {
bb_dump_add(optarg);
} /* else */
if (ch == 'f') {
bb_dump_addfile(optarg);
} /* else */
if (ch == 'n') {
bb_dump_length = xatoi_u(optarg);
} /* else */
if (ch == 's') {
bb_dump_skip = xatoul_range_sfx(optarg, 0, LONG_MAX, suffixes);
} /* else */
if (ch == 'v') {
bb_dump_vflag = ALL;
}
}
}
if (!bb_dump_fshead) {
bb_dump_add(add_first);
bb_dump_add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
}
argv += optind;
return bb_dump_dump(argv);
}
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