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Diffstat (limited to 'util-linux/hexdump.c')
| -rw-r--r-- | util-linux/hexdump.c | 169 |
1 files changed, 169 insertions, 0 deletions
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. + */ |