trunk/src/misc.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2016 ircd-hybrid development team
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file s_misc.c
 * \brief Yet another miscellaneous functions file.
 * \version $Id$
 */

#include "stdinc.h"
#include "misc.h"
#include "irc_string.h"
#include "ircd.h"


const char *
date(uintmax_t lclock)
{
  static char buf[80];
  static uintmax_t lclock_last;

  if (!lclock)
    lclock = CurrentTime;

  if (lclock_last != lclock)
  {
    lclock_last = lclock;
    strftime(buf, sizeof(buf), "%A %B %-e %Y -- %T %z", localtime((time_t *)&lclock));
  }

  return buf;
}

const char *
date_iso8601(uintmax_t lclock)
{
  static char buf[MAX_DATE_STRING];
  static uintmax_t lclock_last;

  if (!lclock)
    lclock = CurrentTime;

  if (lclock_last != lclock)
  {
    lclock_last = lclock;
    strftime(buf, sizeof(buf), "%FT%T%z", localtime((time_t *)&lclock));
  }

  return buf;
}

/*
 * myctime - This is like standard ctime()-function, but it zaps away
 *   the newline from the end of that string. Also, it takes
 *   the time value as parameter, instead of pointer to it.
 *   Note that it is necessary to copy the string to alternate
 *   buffer (who knows how ctime() implements it, maybe it statically
 *   has newline there and never 'refreshes' it -- zapping that
 *   might break things in other places...)
 *
 *
 * Thu Nov 24 18:22:48 1986
 */
const char *
date_ctime(uintmax_t lclock)
{
  static char buf[MAX_DATE_STRING];
  static uintmax_t lclock_last;

  if (!lclock)
    lclock = CurrentTime;

  if (lclock_last != lclock)
  {
    lclock_last = lclock;
    strftime(buf, sizeof(buf), "%a %b %-e %T %Y", localtime((time_t *)&lclock));
  }

  return buf;
}

const char *
time_dissect(uintmax_t duration)
{
  static char buf[32];  /* 32 = sizeof("9999999999999999 days, 23:59:59") */
  unsigned int days = 0, hours = 0, minutes = 0, seconds = 0;

  while (duration >= 60 * 60 * 24)
  {
    duration -= 60 * 60 * 24;
    ++days;
  }

  while (duration >= 60 * 60)
  {
    duration -= 60 * 60;
    ++hours;
  }

  while (duration >= 60)
  {
    duration -= 60;
    ++minutes;
  }

  seconds = duration;

  snprintf(buf, sizeof(buf), "%u day%s, %02u:%02u:%02u",
           days, days == 1 ? "" : "s", hours, minutes, seconds);
  return buf;
}

void
binary_to_hex(const unsigned char *bin, char *hex, unsigned int length)
{
  static const char trans[] = "0123456789ABCDEF";

  for (const unsigned char *const end = bin + length; bin < end; ++bin)
  {
    *hex++ = trans[*bin >>  4];
    *hex++ = trans[*bin & 0xf];
  }

  *hex = '\0';
}
Revision:	7330
Committed:	Fri Feb 19 17:50:13 2016 UTC (9 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	3332 byte(s)
Log Message:	- Now that we got time_t to work nicely on openbsd with snprintf's conversion specifiers, we ran into a similiar issue on Raspbian/ARMv7's time_t which is of signed 32 bit and doesn't cope at all with %j. Instead of doing tricks, get rid of time_t everywhere and forever and use uintmax_t instead which has at least a 'standardized' conversion specifier associated with it.
#	User	Rev	Content
1	adx	30	/*
2	michael	2916	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	7006	* Copyright (c) 1997-2016 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2916	/*! \file s_misc.c
23			* \brief Yet another miscellaneous functions file.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	3347	#include "misc.h"
29	adx	30	#include "irc_string.h"
30			#include "ircd.h"
31
32
33	michael	1847	const char *
34	michael	7330	date(uintmax_t lclock)
35	adx	30	{
36	michael	6499	static char buf[80];
37	michael	7330	static uintmax_t lclock_last;
38	adx	30
39	michael	2916	if (!lclock)
40	adx	30	lclock = CurrentTime;
41	michael	3244
42	michael	6499	if (lclock_last != lclock)
43	adx	30	{
44	michael	6499	lclock_last = lclock;
45	michael	7330	strftime(buf, sizeof(buf), "%A %B %-e %Y -- %T %z", localtime((time_t *)&lclock));
46	adx	30	}
47
48			return buf;
49			}
50
51			const char *
52	michael	7330	date_iso8601(uintmax_t lclock)
53	michael	6415	{
54			static char buf[MAX_DATE_STRING];
55	michael	7330	static uintmax_t lclock_last;
56	michael	6415
57			if (!lclock)
58			lclock = CurrentTime;
59
60			if (lclock_last != lclock)
61			{
62			lclock_last = lclock;
63	michael	7330	strftime(buf, sizeof(buf), "%FT%T%z", localtime((time_t *)&lclock));
64	michael	6415	}
65
66			return buf;
67			}
68
69	michael	2970	/*
70			* myctime - This is like standard ctime()-function, but it zaps away
71			* the newline from the end of that string. Also, it takes
72			* the time value as parameter, instead of pointer to it.
73			* Note that it is necessary to copy the string to alternate
74			* buffer (who knows how ctime() implements it, maybe it statically
75			* has newline there and never 'refreshes' it -- zapping that
76			* might break things in other places...)
77			*
78			*
79			* Thu Nov 24 18:22:48 1986
80			*/
81			const char *
82	michael	7330	date_ctime(uintmax_t lclock)
83	michael	2970	{
84	michael	6423	static char buf[MAX_DATE_STRING];
85	michael	7330	static uintmax_t lclock_last;
86	michael	2970
87	michael	6419	if (!lclock)
88			lclock = CurrentTime;
89
90	michael	6513	if (lclock_last != lclock)
91			{
92			lclock_last = lclock;
93	michael	7330	strftime(buf, sizeof(buf), "%a %b %-e %T %Y", localtime((time_t *)&lclock));
94	michael	6513	}
95	michael	2970
96			return buf;
97			}
98
99	michael	6569	const char *
100	michael	7330	time_dissect(uintmax_t duration)
101	michael	6569	{
102	michael	6934	static char buf[32]; /* 32 = sizeof("9999999999999999 days, 23:59:59") */
103	michael	6569	unsigned int days = 0, hours = 0, minutes = 0, seconds = 0;
104
105	michael	6789	while (duration >= 60 * 60 * 24)
106	michael	6569	{
107	michael	6784	duration -= 60 * 60 * 24;
108	michael	6569	++days;
109			}
110
111	michael	6789	while (duration >= 60 * 60)
112	michael	6569	{
113	michael	6784	duration -= 60 * 60;
114	michael	6569	++hours;
115			}
116
117	michael	6789	while (duration >= 60)
118	michael	6569	{
119	michael	6784	duration -= 60;
120	michael	6569	++minutes;
121			}
122
123	michael	6784	seconds = duration;
124	michael	6569
125			snprintf(buf, sizeof(buf), "%u day%s, %02u:%02u:%02u",
126			days, days == 1 ? "" : "s", hours, minutes, seconds);
127			return buf;
128			}
129	michael	7152
130			void
131			binary_to_hex(const unsigned char bin, char hex, unsigned int length)
132			{
133			static const char trans[] = "0123456789ABCDEF";
134
135			for (const unsigned char *const end = bin + length; bin < end; ++bin)
136			{
137			hex++ = trans[bin >> 4];
138			hex++ = trans[bin & 0xf];
139			}
140
141			*hex = '\0';
142			}