diff options
Diffstat (limited to 'bin/support.c')
| -rw-r--r-- | bin/support.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/bin/support.c b/bin/support.c new file mode 100644 index 000000000000..0dac499aca02 --- /dev/null +++ b/bin/support.c @@ -0,0 +1,157 @@ +/* $NetBSD: support.c,v 1.8 2016/04/04 15:52:56 christos Exp $ */ + +/*- + * Copyright (c) 2015 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <sys/cdefs.h> +__RCSID("$NetBSD: support.c,v 1.8 2016/04/04 15:52:56 christos Exp $"); + +#include <time.h> +#include <string.h> +#include <stdio.h> +#include <stdarg.h> +#include <errno.h> +#include <stdlib.h> +#include <inttypes.h> + +#include "support.h" + +static __attribute__((__format_arg__(3))) const char * +expandm(char *buf, size_t len, const char *fmt) +{ + char *p; + size_t r; + + if ((p = strstr(fmt, "%m")) == NULL) + return fmt; + + r = (size_t)(p - fmt); + if (r >= len) + return fmt; + + strlcpy(buf, fmt, r + 1); + strlcat(buf, strerror(errno), len); + strlcat(buf, fmt + r + 2, len); + + return buf; +} + +void +vdlog(int level __unused, const char *fmt, va_list ap) +{ + char buf[BUFSIZ]; + +// fprintf(stderr, "%s: ", getprogname()); + vfprintf(stderr, expandm(buf, sizeof(buf), fmt), ap); + fprintf(stderr, "\n"); +} + +void +dlog(int level, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdlog(level, fmt, ap); + va_end(ap); +} + +const char * +fmttime(char *b, size_t l, time_t t) +{ + struct tm tm; + if (localtime_r(&t, &tm) == NULL) + snprintf(b, l, "*%jd*", (intmax_t)t); + else + strftime(b, l, "%Y/%m/%d %H:%M:%S", &tm); + return b; +} + +const char * +fmtydhms(char *b, size_t l, time_t t) +{ + time_t s, m, h, d, y; + int z; + size_t o; + + s = t % 60; + t /= 60; + m = t % 60; + t /= 60; + h = t % 60; + t /= 24; + d = t % 24; + t /= 356; + y = t; + + z = 0; + o = 0; +#define APPEND(a) \ + if (a) { \ + z = snprintf(b + o, l - o, "%jd%s", (intmax_t)a, __STRING(a)); \ + if (z == -1) \ + return b; \ + o += (size_t)z; \ + if (o >= l) \ + return b; \ + } + APPEND(y) + APPEND(d) + APPEND(h) + APPEND(m) + APPEND(s) + return b; +} + +ssize_t +blhexdump(char *buf, size_t len, const char *str, const void *b, size_t l) +{ + size_t z, cz; + int r; + const unsigned char *p = b; + const unsigned char *e = p + l; + + r = snprintf(buf, len, "%s: ", str); + if (r == -1) + return -1; + if ((cz = z = (size_t)r) >= len) + cz = len; + + while (p < e) { + r = snprintf(buf + cz, len - cz, "%.2x", *p++); + if (r == -1) + return -1; + if ((cz = (z += (size_t)r)) >= len) + cz = len; + } + return (ssize_t)z; +} |