Introduce od and hexdump applets
diff --git a/util-linux/hexdump.c b/util-linux/hexdump.c
new file mode 100644
index 0000000..4510a5e
--- /dev/null
+++ b/util-linux/hexdump.c
@@ -0,0 +1,169 @@
+/*
+ * 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.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Original copyright notice is retained at the end of this file.
+ */
+
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include "dump.h"
+#include "busybox.h"
+
+extern off_t skip; /* bytes to skip */
+
+extern FS *fshead; /* head of format strings */
+extern int blocksize; /* data block size */
+extern int length; /* max bytes to read */
+
+void addfile(char *name)
+{
+ register char *p;
+ FILE *fp;
+ int ch;
+ char buf[2048 + 1];
+
+ if (!(fp = fopen(name, "r"))) {
+ error_msg_and_die("hexdump: can't read %s.\n", name);
+ }
+ while (fgets(buf, sizeof(buf), fp)) {
+ if (!(p = index(buf, '\n'))) {
+ error_msg("hexdump: line too long.\n");
+ while ((ch = getchar()) != '\n' && ch != EOF);
+ continue;
+ }
+ *p = '\0';
+ for (p = buf; *p && isspace(*p); ++p);
+ if (!*p || *p == '#') {
+ continue;
+ }
+ add(p);
+ }
+ (void)fclose(fp);
+}
+
+int hexdump_main(int argc, char **argv)
+{
+// register FS *tfs;
+ char *p;
+ int ch;
+ extern enum _vflag vflag;
+ vflag = FIRST;
+ length = -1;
+
+ while ((ch = getopt(argc, argv, "bcde:f:n:os:vx")) != EOF) {
+ switch (ch) {
+ case 'b':
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
+ break;
+ case 'c':
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
+ break;
+ case 'd':
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 8/2 \" %05u \" \"\\n\"");
+ break;
+ case 'e':
+ add(optarg);
+ break;
+ case 'f':
+ addfile(optarg);
+ break;
+ case 'n':
+ if ((length = atoi(optarg)) < 0) {
+ error_msg_and_die("hexdump: bad length value.\n");
+ }
+ break;
+ case 'o':
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
+ break;
+ case 's':
+ if ((skip = strtol(optarg, &p, 0)) < 0) {
+ error_msg_and_die("hexdump: bad skip value.\n");
+ }
+ switch(*p) {
+ case 'b':
+ skip *= 512;
+ break;
+ case 'k':
+ skip *= 1024;
+ break;
+ case 'm':
+ skip *= 1048576;
+ break;
+ }
+ break;
+ case 'v':
+ vflag = ALL;
+ break;
+ case 'x':
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 8/2 \" %04x \" \"\\n\"");
+ break;
+ case '?':
+ show_usage();
+ }
+ }
+
+ if (!fshead) {
+ add("\"%07.7_Ax\n\"");
+ add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
+ }
+
+ argv += optind;
+
+ return(dump(argv));
+}
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * 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 following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ */