diff options
Diffstat (limited to 'lib/libutil/hexdump.c')
| -rw-r--r-- | lib/libutil/hexdump.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/lib/libutil/hexdump.c b/lib/libutil/hexdump.c new file mode 100644 index 0000000..76b93ce --- /dev/null +++ b/lib/libutil/hexdump.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 1986, 1988, 1991, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * 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. + * 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. + * + * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <libutil.h> +#include <stdio.h> + +void +hexdump(const void *ptr, int length, const char *hdr, int flags) +{ + int i, j, k; + int cols; + const unsigned char *cp; + char delim; + + if ((flags & HD_DELIM_MASK) != 0) + delim = (flags & HD_DELIM_MASK) >> 8; + else + delim = ' '; + + if ((flags & HD_COLUMN_MASK) != 0) + cols = flags & HD_COLUMN_MASK; + else + cols = 16; + + cp = ptr; + for (i = 0; i < length; i+= cols) { + if (hdr != NULL) + printf("%s", hdr); + + if ((flags & HD_OMIT_COUNT) == 0) + printf("%04x ", i); + + if ((flags & HD_OMIT_HEX) == 0) { + for (j = 0; j < cols; j++) { + k = i + j; + if (k < length) + printf("%c%02x", delim, cp[k]); + else + printf(" "); + } + } + + if ((flags & HD_OMIT_CHARS) == 0) { + printf(" |"); + for (j = 0; j < cols; j++) { + k = i + j; + if (k >= length) + printf(" "); + else if (cp[k] >= ' ' && cp[k] <= '~') + printf("%c", cp[k]); + else + printf("."); + } + printf("|"); + } + printf("\n"); + } +} + |
