--- LICENSE | 2 +- Makefile | 1 + od.1 | 25 ++++++++++++++++ od.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 124 insertions(+), 1 deletion(-) create mode 100644 od.1 create mode 100644 od.c diff --git a/LICENSE b/LICENSE index 5ebeb0c..1f42551 100644 --- a/LICENSE +++ b/LICENSE _AT_@ -54,7 +54,7 @@ Authors/contributors include: © 2014 Ari Malinen <ari.malinen_AT_gmail.com> © 2014 Brandon Mulcahy <brandon_AT_jangler.info> © 2014 Adria Garriga <rhaps0dy_AT_installgentoo.com> -© 2014 Greg Reagle <greg.reagle_AT_umbc.edu> +© 2014,2015 Greg Reagle <greg.reagle_AT_umbc.edu> © 2015 Tai Chi Minh Ralph Eastwood <tcmreastwood_AT_gmail.com> © 2015 Quentin Rameau <quinq_AT_quinq.eu.org> © 2015 Dionysis Grigoropoulos <info_AT_erethon.com> diff --git a/Makefile b/Makefile index c5cb2e4..9f60a13 100644 --- a/Makefile +++ b/Makefile _AT_@ -115,6 +115,7 @@ BIN =\ nice\ nl\ nohup\ + od\ paste\ printenv\ printf\ diff --git a/od.1 b/od.1 new file mode 100644 index 0000000..783799b --- /dev/null +++ b/od.1 _AT_@ -0,0 +1,25 @@ +.Dd September 28, 2015 +.Dt OD 1 +.Os sbase +.Sh NAME +.Nm od +.Nd octal dump +.Sh SYNOPSIS +.Nm +.Op Fl A Ar d|o|x|n +.Op Ar file... +.Sh DESCRIPTION +.Nm +writes an octal dump of +.Ar file(s) +to standard output. If no +.Ar file(s) +are specified then +.Nm +is a filter, i.e. reads from standard input. +.Sh OPTIONS +.Bl -tag -width Ds +.It Fl A Ar d|o|x|n + +Display the address in base \fId\fRecimal | \fIo\fRctal | he\fIx\fRadecimal | +\fIn\fRone. If unspecified, the default is octal. diff --git a/od.c b/od.c new file mode 100644 index 0000000..a766d59 --- /dev/null +++ b/od.c _AT_@ -0,0 +1,97 @@ +/* See LICENSE file for copyright and license details. */ +#include <string.h> + +#include "stdlib.h" +#include "util.h" + +static char *address_radix = "o"; + +static void +usage(void) +{ + eprintf("usage: %s [-A d|o|x|n] [file ...]\n", argv0); +} + +void +print_address(FILE *f, char radix, size_t addr) +{ + switch (radix) { + case 'x': + fprintf(f, "%.7zx ", addr); + break; + case 'd': + fprintf(f, "%.7zd ", addr); + break; + case 'o': + fprintf(f, "%.7zo ", addr); + break; + case 'n': + fprintf(f, "%s", " "); + break; + default: + usage(); + } +} + +void +od(FILE *fp_in, const char *s_in, FILE *fp_out, const char *s_out) +{ + unsigned char buf[BUFSIZ]; + size_t addr; + size_t n; /*actual size of the buffer*/ + size_t i; /*tracks index within the buffer*/ + const size_t bytes_per_line = 16; + + addr = 0; + while ((n = fread(buf, 1, 5, fp_in))) { + for (i=0; i<n; ++i, ++addr) { + if ((addr % bytes_per_line) == 0) { + if (addr != 0) fprintf(fp_out, "%s", "\n"); + print_address(fp_out, address_radix[0], addr); + } + fprintf(fp_out, "%.2hhx ", buf[i]); + } + if (feof(fp_in) || ferror(fp_in) || ferror(fp_out)) + break; + } + fprintf(fp_out, "\n%.7zx \n", addr); +} + +int +main(int argc, char *argv[]) +{ + FILE *fp; + int ret = 0; + + ARGBEGIN { + case 'A': + address_radix = EARGF(usage()); + if ((strlen(address_radix) > 1) || (!strchr("doxn", address_radix[0]))) + usage(); + break; + default: + usage(); + } ARGEND; + + if (!argc) { + od(stdin, "<stdin>", stdout, "<stdout>"); + } else { + for (; *argv; argc--, argv++) { + if (!strcmp(*argv, "-")) { + *argv = "<stdin>"; + fp = stdin; + } else if (!(fp = fopen(*argv, "r"))) { + weprintf("fopen %s:", *argv); + ret = 1; + continue; + } + od(fp, *argv, stdout, "<stdout>"); + if (fp != stdin && fshut(fp, *argv)) + ret = 1; + } + } + + ret |= fshut(stdin, "<stdin>") | fshut(stdout, "<stdout>"); + + return ret; +} -- 1.7.10.4 --------------060000000200090208010406--Received on Mon Sep 17 2001 - 00:00:00 CEST
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