/*
- * Mini xargs implementation for busybox
+ * od implementation for busybox
+ * Based on code from util-linux v 2.11l
*
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
- * Remixed by Mark Whitley <markw@codepoet.org>
+ * 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
* 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 <stdio.h>
+#include <ctype.h>
+#include <getopt.h>
#include <stdlib.h>
-#include <string.h>
+#include "dump.h"
#include "busybox.h"
-int xargs_main(int argc, char **argv)
+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)
{
- char *cmd_to_be_executed;
- char *file_to_act_on;
- int i;
- int len;
+ extern off_t skip;
+ register char *num, *p;
+ int base;
+ char *end;
/*
- * No options are supported in this version of xargs; no getopt.
+ * 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.
*
- * Re: The missing -t flag: Most programs that produce output also print
- * the filename, so xargs doesn't really need to do it again. Supporting
- * the -t flag =greatly= bloats up the size of this app and the memory it
- * uses because you have to buffer all the input file strings in memory. If
- * you really want to see the filenames that xargs will act on, just run it
- * once with no args and xargs will echo the filename. Simple.
+ * We assumes it's a file if the offset is bad.
*/
+ p = **argvp;
- argv++;
- len = argc; /* arg = count for ' ' + trailing '\0' */
- /* Store the command to be executed (taken from the command line) */
- if (argc == 1) {
- /* default behavior is to echo all the filenames */
- argv[0] = "/bin/echo";
- len++; /* space for trailing '\0' */
- } else {
- argc--;
- }
- /* concatenate all the arguments passed to xargs together */
- for (i = 0; i < argc; i++)
- len += strlen(argv[i]);
- cmd_to_be_executed = xmalloc (len);
- for (i = len = 0; i < argc; i++) {
- len = sprintf(cmd_to_be_executed + len, "%s ", argv[i]);
+ if (!p) {
+ /* hey someone is probably piping to us ... */
+ return;
}
- /* Now, read in one line at a time from stdin, and store this
- * line to be used later as an argument to the command */
- while ((file_to_act_on = get_line_from_file(stdin)) !=NULL) {
+ 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;
+ }
- FILE *cmd_output;
- char *output_line;
- char *execstr;
+ /* skip over the number */
+ if (base == 16)
+ for (num = p; ishexdigit(*p); ++p);
+ else
+ for (num = p; isdigit(*p); ++p);
- /* eat the newline off the filename. */
- chomp(file_to_act_on);
+ /* check for no number */
+ if (num == p)
+ return;
- /* eat blank lines */
- if (file_to_act_on[0] == 0)
- continue;
+ /* if terminates with a '.', base is decimal */
+ if (*p == '.') {
+ if (base)
+ return;
+ base = 10;
+ }
- /* assemble the command and execute it */
- bb_asprintf(&execstr, "%s%s", cmd_to_be_executed, file_to_act_on);
-
- cmd_output = popen(execstr, "r");
- if (cmd_output == NULL)
- perror_msg_and_die("popen");
+ skip = strtol(num, &end, base ? base : 8);
- /* harvest the output */
- while ((output_line = get_line_from_file(cmd_output)) != NULL) {
- fputs(output_line, stdout);
- free(output_line);
+ /* 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';
+ }
}
+ }
+}
- /* clean up */
- pclose(cmd_output);
- free(execstr);
- free(file_to_act_on);
+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\"");
}
-#ifdef CONFIG_FEATURE_CLEAN_UP
- free(cmd_to_be_executed);
-#endif
+ argc -= optind;
+ argv += optind;
+
+ odoffset(argc, &argv);
- return 0;
+ return(dump(argv));
}
-/* vi: set sw=4 ts=4: */
+/*-
+ * 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. 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.
+ */
projects / oweals / busybox.git / commitdiff