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authorGlenn L McGrath <bug1@ihug.co.nz>2001-11-02 11:39:46 +0000
committerGlenn L McGrath <bug1@ihug.co.nz>2001-11-02 11:39:46 +0000
commit60281118d022a702c62c9047ba6998ef873917d4 (patch)
treec84573dea7b7461c7d2174391911075b1470e86e /coreutils
parentb89637a037c362a4bfef26375bb8cd1ddfdc98e0 (diff)
downloadbusybox-60281118d022a702c62c9047ba6998ef873917d4.tar.gz
Introduce od and hexdump applets
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/od.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/coreutils/od.c b/coreutils/od.c
new file mode 100644
index 000000000..681af5c45
--- /dev/null
+++ b/coreutils/od.c
@@ -0,0 +1,270 @@
+/*
+ * od implementation for busybox
+ * Based on code from util-linux v 2.11l
+ *
+ * Copyright (c) 1990
+ * 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 <ctype.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include "dump.h"
+#include "busybox.h"
+
+extern FS *fshead; /* head of format strings */
+extern int blocksize; /* data block size */
+extern int length; /* max bytes to read */
+
+#define ishexdigit(c) \
+ ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))
+
+static void
+odoffset(int argc, char ***argvp)
+{
+ extern off_t skip;
+ register char *num, *p;
+ int base;
+ char *end;
+
+ /*
+ * The offset syntax of od(1) was genuinely bizarre. First, if
+ * it started with a plus it had to be an offset. Otherwise, if
+ * there were at least two arguments, a number or lower-case 'x'
+ * followed by a number makes it an offset. By default it was
+ * octal; if it started with 'x' or '0x' it was hex. If it ended
+ * in a '.', it was decimal. If a 'b' or 'B' was appended, it
+ * multiplied the number by 512 or 1024 byte units. There was
+ * no way to assign a block count to a hex offset.
+ *
+ * We assumes it's a file if the offset is bad.
+ */
+ p = **argvp;
+ if (*p != '+' && (argc < 2 ||
+ (!isdigit(p[0]) && (p[0] != 'x' || !ishexdigit(p[1])))))
+ return;
+
+ base = 0;
+ /*
+ * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
+ * set base.
+ */
+ if (p[0] == '+')
+ ++p;
+ if (p[0] == 'x' && ishexdigit(p[1])) {
+ ++p;
+ base = 16;
+ } else if (p[0] == '0' && p[1] == 'x') {
+ p += 2;
+ base = 16;
+ }
+
+ /* skip over the number */
+ if (base == 16)
+ for (num = p; ishexdigit(*p); ++p);
+ else
+ for (num = p; isdigit(*p); ++p);
+
+ /* check for no number */
+ if (num == p)
+ return;
+
+ /* if terminates with a '.', base is decimal */
+ if (*p == '.') {
+ if (base)
+ return;
+ base = 10;
+ }
+
+ skip = strtol(num, &end, base ? base : 8);
+
+ /* if end isn't the same as p, we got a non-octal digit */
+ if (end != p)
+ skip = 0;
+ else {
+ if (*p) {
+ if (*p == 'b')
+ skip *= 512;
+ else if (*p == 'B')
+ skip *= 1024;
+ ++p;
+ }
+ if (*p)
+ skip = 0;
+ else {
+ ++*argvp;
+ /*
+ * If the offset uses a non-octal base, the base of
+ * the offset is changed as well. This isn't pretty,
+ * but it's easy.
+ */
+#define TYPE_OFFSET 7
+ if (base == 16) {
+ fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
+ fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
+ } else if (base == 10) {
+ fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
+ fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
+ }
+ }
+ }
+}
+
+static void odprecede(void)
+{
+ static int first = 1;
+
+ if (first) {
+ first = 0;
+ add("\"%07.7_Ao\n\"");
+ add("\"%07.7_ao \"");
+ } else
+ add("\" \"");
+}
+
+int od_main(int argc, char **argv)
+{
+ int ch;
+ extern enum _vflag vflag;
+ vflag = FIRST;
+ length = -1;
+
+ while ((ch = getopt(argc, argv, "aBbcDdeFfHhIiLlOoPpswvXx")) != EOF)
+ switch (ch) {
+ case 'a':
+ odprecede();
+ add("16/1 \"%3_u \" \"\\n\"");
+ break;
+ case 'B':
+ case 'o':
+ odprecede();
+ add("8/2 \" %06o \" \"\\n\"");
+ break;
+ case 'b':
+ odprecede();
+ add("16/1 \"%03o \" \"\\n\"");
+ break;
+ case 'c':
+ odprecede();
+ add("16/1 \"%3_c \" \"\\n\"");
+ break;
+ case 'd':
+ odprecede();
+ add("8/2 \" %05u \" \"\\n\"");
+ break;
+ case 'D':
+ odprecede();
+ add("4/4 \" %010u \" \"\\n\"");
+ break;
+ case 'e': /* undocumented in od */
+ case 'F':
+ odprecede();
+ add("2/8 \" %21.14e \" \"\\n\"");
+ break;
+
+ case 'f':
+ odprecede();
+ add("4/4 \" %14.7e \" \"\\n\"");
+ break;
+ case 'H':
+ case 'X':
+ odprecede();
+ add("4/4 \" %08x \" \"\\n\"");
+ break;
+ case 'h':
+ case 'x':
+ odprecede();
+ add("8/2 \" %04x \" \"\\n\"");
+ break;
+ case 'I':
+ case 'L':
+ case 'l':
+ odprecede();
+ add("4/4 \" %11d \" \"\\n\"");
+ break;
+ case 'i':
+ odprecede();
+ add("8/2 \" %6d \" \"\\n\"");
+ break;
+ case 'O':
+ odprecede();
+ add("4/4 \" %011o \" \"\\n\"");
+ break;
+ case 'v':
+ vflag = ALL;
+ break;
+ case 'P':
+ case 'p':
+ case 's':
+ case 'w':
+ case '?':
+ default:
+ error_msg("od: od(1) has been deprecated for hexdump(1).\n");
+ if (ch != '?') {
+ error_msg("od: hexdump(1) compatibility doesn't support the -%c option%s\n",
+ ch, ch == 's' ? "; see strings(1)." : ".");
+ }
+ show_usage();
+ }
+
+ if (!fshead) {
+ add("\"%07.7_Ao\n\"");
+ add("\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ odoffset(argc, &argv);
+
+ return(dump(argv));
+}
+
+/*-
+ * Copyright (c) 1990 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.
+ */