ab77398ff9
Use %lld instead and cast the args to (long long) explicitly. I'm not sure about our policy vs. the C99 format string macros in basesrc - should we use those here?
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center, by Luke Mewburn and by Tomas Svensson.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef __lint
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__COPYRIGHT("@(#) Copyright (c) 2002\n\
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The NetBSD Foundation, inc. All rights reserved.\n");
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__RCSID("$NetBSD: humanize_number.c,v 1.2 2002/08/12 09:06:59 martin Exp $");
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#endif /* !__lint */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <locale.h>
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#include <util.h>
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int
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humanize_number(char *buf, size_t len, int64_t bytes,
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const char *suffix, int scale, int flags) {
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static const char prefixes[] = " KMGTPE";
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int i, r;
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int64_t divisor, max, s1, s2, sign;
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size_t baselen, suffixlen;
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_DIAGASSERT(buf != NULL);
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_DIAGASSERT(suffix != NULL);
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if (scale >= sizeof(prefixes) && scale != HN_AUTOSCALE &&
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scale != HN_GETSCALE)
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return -1;
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if (buf == NULL || suffix == NULL)
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return -1;
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if (len > 0)
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buf[0] = '\0';
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if (bytes < 0) {
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sign = -1;
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bytes *= -100;
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baselen = 4;
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} else {
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sign = 1;
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bytes *= 100;
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baselen = 3;
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}
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suffixlen = strlen(suffix);
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/* check if enough room for `x y' + suffix + `\0' */
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if (len < baselen + suffixlen + 1)
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return (-1);
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if (flags & HN_DIVISOR_1000)
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divisor = 1000;
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else
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divisor = 1024;
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max = 100;
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for (i = 0; i < len - suffixlen - baselen + ((flags & HN_NOSPACE) ?
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1 : 0) ; i++)
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max *= 10;
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if ((scale & HN_AUTOSCALE) || (scale & HN_GETSCALE) ) {
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for (i = 0; bytes >= max && i < sizeof(prefixes); i++)
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bytes /= divisor;
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} else {
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for (i = 0; i < scale && i < sizeof(prefixes); i++)
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bytes /= divisor;
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}
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if (scale & HN_GETSCALE)
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return i;
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if (bytes < 1000 && flags & HN_DECIMAL) {
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if (len < (baselen + 2 + ( (flags & HN_NOSPACE) || (i == 0 &&
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!(flags & HN_B)) ? 0 : 1)))
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return (-1);
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s1 = bytes / 100;
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if ((s2 = (( (bytes % 100 ) + 5 ) / 10 ) ) == 10 ) {
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s1++;
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s2 = 0;
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}
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r = snprintf(buf, len, "%lld%s%lld%s%c%s", (long long)(sign * s1),
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localeconv()->decimal_point, (long long)s2,
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(i == 0 && !(flags & HN_B) ) || flags & HN_NOSPACE ?
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"" : " ", (i == 0 && (flags & HN_B)) ? 'B' :
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prefixes[i], suffix);
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} else
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r = snprintf(buf, len, "%lld%s%c%s", (long long)(sign * ((bytes + 50) / 100)),
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i == 0 || flags & HN_NOSPACE ? "" : " ", (i == 0 &&
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(flags & HN_B)) ? 'B' : prefixes[i], suffix);
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return r;
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}
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