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genutils.c
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genutils.c
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/***************************************************************************
* Generic utility routines
*
* This file is part of the miniSEED Library.
*
* Copyright (c) 2024 Chad Trabant, EarthScope Data Services
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "gmtime64.h"
#include "libmseed.h"
static nstime_t ms_time2nstime_int (int year, int day, int hour,
int min, int sec, uint32_t nsec);
/** @cond UNDOCUMENTED */
/* Global set of allocation functions, defaulting to system malloc(), realloc() and free() */
LIBMSEED_MEMORY libmseed_memory = { .malloc = malloc, .realloc = realloc, .free = free };
/* Global pre-allocation block size, default 1 MiB on Windows, disabled otherwise */
#if defined(LMP_WIN)
size_t libmseed_prealloc_block_size = 1048576;
#else
size_t libmseed_prealloc_block_size = 0;
#endif
/* Internal realloc() wrapper that allocates in libmseed_prealloc_block_size blocks */
void *
libmseed_memory_prealloc (void *ptr, size_t size, size_t *currentsize)
{
size_t newsize;
void *newptr;
if (!currentsize)
return NULL;
if (libmseed_prealloc_block_size == 0)
return NULL;
/* No additional memory needed if request already satisfied */
if (size < *currentsize)
return ptr;
/* Calculate new size needed for request by adding blocks */
newsize = *currentsize + libmseed_prealloc_block_size;
while (newsize < size)
newsize += libmseed_prealloc_block_size;
newptr = libmseed_memory.realloc (ptr, newsize);
if (newptr)
*currentsize = newsize;
return newptr;
}
/* A constant number of seconds between the NTP and POSIX/Unix time epoch */
#define NTPPOSIXEPOCHDELTA 2208988800LL
#define NTPEPOCH2NSTIME(X) (MS_EPOCH2NSTIME (X - NTPPOSIXEPOCHDELTA))
/* Embedded leap second list, good through: 28 December 2023 */
static LeapSecond embedded_leapsecondlist[] = {
{.leapsecond = NTPEPOCH2NSTIME (2272060800), .TAIdelta = 10, .next = &embedded_leapsecondlist[1]},
{.leapsecond = NTPEPOCH2NSTIME (2287785600), .TAIdelta = 11, .next = &embedded_leapsecondlist[2]},
{.leapsecond = NTPEPOCH2NSTIME (2303683200), .TAIdelta = 12, .next = &embedded_leapsecondlist[3]},
{.leapsecond = NTPEPOCH2NSTIME (2335219200), .TAIdelta = 13, .next = &embedded_leapsecondlist[4]},
{.leapsecond = NTPEPOCH2NSTIME (2366755200), .TAIdelta = 14, .next = &embedded_leapsecondlist[5]},
{.leapsecond = NTPEPOCH2NSTIME (2398291200), .TAIdelta = 15, .next = &embedded_leapsecondlist[6]},
{.leapsecond = NTPEPOCH2NSTIME (2429913600), .TAIdelta = 16, .next = &embedded_leapsecondlist[7]},
{.leapsecond = NTPEPOCH2NSTIME (2461449600), .TAIdelta = 17, .next = &embedded_leapsecondlist[8]},
{.leapsecond = NTPEPOCH2NSTIME (2492985600), .TAIdelta = 18, .next = &embedded_leapsecondlist[9]},
{.leapsecond = NTPEPOCH2NSTIME (2524521600), .TAIdelta = 19, .next = &embedded_leapsecondlist[10]},
{.leapsecond = NTPEPOCH2NSTIME (2571782400), .TAIdelta = 20, .next = &embedded_leapsecondlist[11]},
{.leapsecond = NTPEPOCH2NSTIME (2603318400), .TAIdelta = 21, .next = &embedded_leapsecondlist[12]},
{.leapsecond = NTPEPOCH2NSTIME (2634854400), .TAIdelta = 22, .next = &embedded_leapsecondlist[13]},
{.leapsecond = NTPEPOCH2NSTIME (2698012800), .TAIdelta = 23, .next = &embedded_leapsecondlist[14]},
{.leapsecond = NTPEPOCH2NSTIME (2776982400), .TAIdelta = 24, .next = &embedded_leapsecondlist[15]},
{.leapsecond = NTPEPOCH2NSTIME (2840140800), .TAIdelta = 25, .next = &embedded_leapsecondlist[16]},
{.leapsecond = NTPEPOCH2NSTIME (2871676800), .TAIdelta = 26, .next = &embedded_leapsecondlist[17]},
{.leapsecond = NTPEPOCH2NSTIME (2918937600), .TAIdelta = 27, .next = &embedded_leapsecondlist[18]},
{.leapsecond = NTPEPOCH2NSTIME (2950473600), .TAIdelta = 28, .next = &embedded_leapsecondlist[19]},
{.leapsecond = NTPEPOCH2NSTIME (2982009600), .TAIdelta = 29, .next = &embedded_leapsecondlist[20]},
{.leapsecond = NTPEPOCH2NSTIME (3029443200), .TAIdelta = 30, .next = &embedded_leapsecondlist[21]},
{.leapsecond = NTPEPOCH2NSTIME (3076704000), .TAIdelta = 31, .next = &embedded_leapsecondlist[22]},
{.leapsecond = NTPEPOCH2NSTIME (3124137600), .TAIdelta = 32, .next = &embedded_leapsecondlist[23]},
{.leapsecond = NTPEPOCH2NSTIME (3345062400), .TAIdelta = 33, .next = &embedded_leapsecondlist[24]},
{.leapsecond = NTPEPOCH2NSTIME (3439756800), .TAIdelta = 34, .next = &embedded_leapsecondlist[25]},
{.leapsecond = NTPEPOCH2NSTIME (3550089600), .TAIdelta = 35, .next = &embedded_leapsecondlist[26]},
{.leapsecond = NTPEPOCH2NSTIME (3644697600), .TAIdelta = 36, .next = &embedded_leapsecondlist[27]},
{.leapsecond = NTPEPOCH2NSTIME (3692217600), .TAIdelta = 37, .next = NULL}};
/* Global variable to hold a leap second list */
LeapSecond *leapsecondlist = &embedded_leapsecondlist[0];
/* Days in each month, for non-leap and leap years */
static const int monthdays[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
static const int monthdays_leap[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
/* Determine if year is a leap year */
#define LEAPYEAR(year) (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0))
/* Check that a year is in a valid range */
#define VALIDYEAR(year) (year >= 1678 && year <= 2262)
/* Check that a month is in a valid range */
#define VALIDMONTH(month) (month >= 1 && month <= 12)
/* Check that a day-of-month is in a valid range */
#define VALIDMONTHDAY(year, month, mday) (mday >= 0 && mday <= (LEAPYEAR (year) ? monthdays_leap[month - 1] : monthdays[month - 1]))
/* Check that a day-of-year is in a valid range */
#define VALIDYEARDAY(year, yday) (yday >= 1 && yday <= (365 + (LEAPYEAR (year) ? 1 : 0)))
/* Check that an hour is in a valid range */
#define VALIDHOUR(hour) (hour >= 0 && hour <= 23)
/* Check that a minute is in a valid range */
#define VALIDMIN(min) (min >= 0 && min <= 59)
/* Check that a second is in a valid range */
#define VALIDSEC(sec) (sec >= 0 && sec <= 60)
/* Check that a nanosecond is in a valid range */
#define VALIDNANOSEC(nanosec) (nanosec <= 999999999)
/** @endcond */
/**********************************************************************/ /**
* @brief Parse network, station, location and channel from an FDSN Source ID
*
* FDSN Source Identifiers are defined at:
* https://docs.fdsn.org/projects/source-identifiers/
*
* Parse a source identifier into separate components, expecting:
* \c "FDSN:NET_STA_LOC_CHAN", where \c CHAN="BAND_SOURCE_POSITION"
*
* The CHAN value will be converted to a SEED channel code if
* possible. Meaning, if the BAND, SOURCE, and POSITION are single
* characters, the underscore delimiters will not be included in the
* returned channel.
*
* Identifiers may contain additional namespace identifiers, e.g.:
* \c "FDSN:AGENCY:NET_STA_LOC_CHAN"
*
* Such additional namespaces are not part of the Source ID standard
* as of this writing and support is included for specialized usage or
* future identifier changes.
*
* Memory for each component must already be allocated. If a specific
* component is not desired set the appropriate argument to NULL.
*
* @param[in] sid Source identifier
* @param[out] net Network code
* @param[out] sta Station code
* @param[out] loc Location code
* @param[out] chan Channel code
*
* @retval 0 on success
* @retval -1 on error
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_sid2nslc (const char *sid, char *net, char *sta, char *loc, char *chan)
{
size_t idlen;
const char *cid;
char *id;
char *ptr, *top, *next;
int sepcnt = 0;
if (!sid)
{
ms_log (2, "%s(): Required input not defined: 'sid'\n", __func__);
return -1;
}
/* Handle the FDSN: namespace identifier */
if (!strncmp (sid, "FDSN:", 5))
{
/* Advance sid pointer to last ':', skipping all namespace identifiers */
sid = strrchr (sid, ':') + 1;
/* Verify 5 delimiters */
cid = sid;
while ((cid = strchr (cid, '_')))
{
cid++;
sepcnt++;
}
if (sepcnt != 5)
{
ms_log (2, "Incorrect number of identifier delimiters (%d): %s\n", sepcnt, sid);
return -1;
}
idlen = strlen (sid) + 1;
if (!(id = libmseed_memory.malloc (idlen)))
{
ms_log (2, "Error duplicating identifier\n");
return -1;
}
memcpy (id, sid, idlen);
/* Network */
top = id;
if ((ptr = strchr (top, '_')))
{
next = ptr + 1;
*ptr = '\0';
if (net)
strcpy (net, top);
top = next;
}
/* Station */
if ((ptr = strchr (top, '_')))
{
next = ptr + 1;
*ptr = '\0';
if (sta)
strcpy (sta, top);
top = next;
}
/* Location, potentially empty */
if ((ptr = strchr (top, '_')))
{
next = ptr + 1;
*ptr = '\0';
if (loc)
strcpy (loc, top);
top = next;
}
/* Channel */
if (*top && chan)
{
/* Map extended channel to SEED channel if possible, otherwise direct copy */
if (ms_xchan2seedchan(chan, top))
{
strcpy (chan, top);
}
}
/* Free duplicated ID */
if (id)
libmseed_memory.free (id);
}
else
{
ms_log (2, "Unrecognized identifier: %s\n", sid);
return -1;
}
return 0;
} /* End of ms_sid2nslc() */
/**********************************************************************/ /**
* @brief Convert network, station, location and channel to an FDSN Source ID
*
* FDSN Source Identifiers are defined at:
* https://docs.fdsn.org/projects/source-identifiers/
*
* Create a source identifier from individual network,
* station, location and channel codes with the form:
* \c FDSN:NET_STA_LOC_CHAN, where \c CHAN="BAND_SOURCE_POSITION"
*
* Memory for the source identifier must already be allocated.
*
* If the \a loc value is NULL it will be empty in the resulting Source ID.
*
* The \a chan value will be converted to extended channel format if
* it appears to be in SEED channel form. Meaning, if the \a chan is
* 3 characters with no delimiters, it will be converted to \c
* "BAND_SOURCE_POSITION" form by adding delimiters between the codes.
*
* @param[out] sid Destination string for source identifier
* @param sidlen Maximum length of \a sid
* @param flags Currently unused, set to 0
* @param[in] net Network code
* @param[in] sta Station code
* @param[in] loc Location code
* @param[in] chan Channel code
*
* @returns length of source identifier
* @retval -1 on error
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_nslc2sid (char *sid, int sidlen, uint16_t flags,
const char *net, const char *sta, const char *loc, const char *chan)
{
(void)flags; /* Unused */
char *sptr = sid;
char xchan[6] = {0};
int needed = 0;
if (!sid || !net || !sta || !chan)
{
ms_log (2, "%s(): Required input not defined: sid,net,sta,chan\n", __func__);
return -1;
}
if (sidlen < 16)
{
ms_log (2, "Length of destination SID buffer must be at least 16 bytes\n");
return -1;
}
*sptr++ = 'F';
*sptr++ = 'D';
*sptr++ = 'S';
*sptr++ = 'N';
*sptr++ = ':';
needed = 5;
/* Network code */
while (*net)
{
if ((sptr - sid) < sidlen)
*sptr++ = *net;
net++;
needed++;
}
if ((sptr - sid) < sidlen)
*sptr++ = '_';
needed++;
/* Station code */
while (*sta)
{
if ((sptr - sid) < sidlen)
*sptr++ = *sta;
sta++;
needed++;
}
if ((sptr - sid) < sidlen)
*sptr++ = '_';
needed++;
/* Location code, may be empty */
if (loc)
{
while (*loc)
{
if ((sptr - sid) < sidlen)
*sptr++ = *loc;
loc++;
needed++;
}
}
if ((sptr - sid) < sidlen)
*sptr++ = '_';
needed++;
/* Map SEED channel to extended channel if possible, otherwise direct copy */
if (!ms_seedchan2xchan (xchan, chan))
{
chan = xchan;
}
/* Channel code */
while (*chan)
{
if ((sptr - sid) < sidlen)
*sptr++ = *chan;
chan++;
needed++;
}
/* Terminate: at the end of the ID or end of the buffer */
if ((sptr - sid) < sidlen)
*sptr = '\0';
else
*--sptr = '\0';
/* A byte is needed for the terminator */
needed++;
if (needed > sidlen)
{
ms_log (2, "Provided SID destination (%d bytes) is not big enough for the needed %d bytes\n",
sidlen, needed);
return -1;
}
return (int)(sptr - sid);
} /* End of ms_nslc2sid() */
/**********************************************************************/ /**
* @brief Convert SEED 2.x channel to extended channel
*
* The SEED 2.x channel at \a seedchan must be a 3-character string.
* The \a xchan buffer must be at least 6 bytes, for the extended
* channel (band,source,position) and the terminating NULL.
*
* This functionality simply maps patterns, it does not check the
* validity of any codes.
*
* @param[out] xchan Destination for extended channel string, must be at least 6 bytes
* @param[in] seedchan Source string, must be a 3-character string
*
* @retval 0 on successful mapping of channel
* @retval -1 on error
***************************************************************************/
int
ms_seedchan2xchan (char *xchan, const char *seedchan)
{
if (!seedchan || !xchan)
return -1;
if (seedchan[0] &&
seedchan[1] &&
seedchan[2] &&
seedchan[3] == '\0')
{
xchan[0] = seedchan[0]; /* Band code */
xchan[1] = '_';
xchan[2] = seedchan[1]; /* Source (aka instrument) code */
xchan[3] = '_';
xchan[4] = seedchan[2]; /* Position (aka orientation) code */
xchan[5] = '\0';
return 0;
}
return -1;
} /* End of ms_seedchan2xchan() */
/**********************************************************************/ /**
* @brief Convert extended channel to SEED 2.x channel
*
* The extended channel at \a xchan must be a 5-character string.
*
* The \a seedchan buffer must be at least 4 bytes, for the SEED
* channel and the terminating NULL. Alternatively, \a seedchan may
* be set to NULL in which case this function becomes a test for
* whether the \a xchan _could_ be mapped without actually doing the
* conversion. Finally, \a seedchan can be the same buffer as \a
* xchan for an in-place conversion.
*
* This routine simply maps patterns, it does not check the validity
* of any specific codes.
*
* @param[out] seedchan Destination for SEED channel string, must be at least 4 bytes
* @param[in] xchan Source string, must be a 5-character string
*
* @retval 0 on successful mapping of channel
* @retval -1 on error
***************************************************************************/
int
ms_xchan2seedchan (char *seedchan, const char *xchan)
{
if (!xchan)
return -1;
if (xchan[0] &&
xchan[1] == '_' &&
xchan[2] &&
xchan[3] == '_' &&
xchan[4] &&
xchan[5] == '\0')
{
if (seedchan)
{
seedchan[0] = xchan[0]; /* Band code */
seedchan[1] = xchan[2]; /* Source (aka instrument) code */
seedchan[2] = xchan[4]; /* Position (aka orientation) code */
seedchan[3] = '\0';
}
return 0;
}
return -1;
} /* End of ms_xchan2seedchan() */
// For utf8d table and utf8length_int() basics:
// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
static const uint8_t utf8d[] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 00..1f
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 20..3f
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 40..5f
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 60..7f
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, // 80..9f
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, // a0..bf
8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // c0..df
0xa,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x3,0x3, // e0..ef
0xb,0x6,0x6,0x6,0x5,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8, // f0..ff
0x0,0x1,0x2,0x3,0x5,0x8,0x7,0x1,0x1,0x1,0x4,0x6,0x1,0x1,0x1,0x1, // s0..s0
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,1,1,1,1, // s1..s2
1,2,1,1,1,1,1,2,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1, // s3..s4
1,2,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,3,1,3,1,1,1,1,1,1, // s5..s6
1,3,1,1,1,1,1,3,1,3,1,1,1,1,1,1,1,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // s7..s8
};
/***************************************************************************
* Determine length of UTF-8 bytes in string.
*
* Calculate the length of the string until either the maximum length,
* terminating NULL, or an invalid UTF-8 codepoint are reached.
*
* To determine if the length calculated stopped due to invalid UTF-8
* codepoint, the return value can be tested for maximum length and
* used to test for a terminating NULL, ala:
*
* length = utf8length_int (str, maxlength);
*
* if (length < maxlength && str[length])
* String contains invalid UTF-8 within maxlength bytes
*
* Returns the number of UTF-8 codepoint bytes (not including the null terminator).
***************************************************************************/
static int
utf8length_int (const char *str, int maxlength)
{
uint32_t state = 0;
uint32_t type;
int length = 0;
int offset;
for (offset = 0; str[offset] && offset < maxlength; offset++)
{
type = utf8d[(uint8_t)str[offset]];
state = utf8d[256 + state * 16 + type];
/* A valid codepoint was found, update length */
if (state == 0)
length = offset + 1;
}
return length;
} /* End of utf8length_int() */
/**********************************************************************/ /**
* @brief Copy string, removing spaces, always terminated
*
* Copy up to \a length bytes of UTF-8 characters from \a source to \a
* dest while removing all spaces. The result is left justified and
* always null terminated.
*
* The destination string must have enough room needed for the
* non-space characters within \a length and the null terminator, a
* maximum of \a length + 1.
*
* @param[out] dest Destination for terminated string
* @param[in] source Source string
* @param[in] length Length of characters for destination string in bytes
*
* @returns the number of characters (not including the null terminator) in
* the destination string
***************************************************************************/
int
ms_strncpclean (char *dest, const char *source, int length)
{
int sidx;
int didx;
if (!dest)
return 0;
if (!source)
{
*dest = '\0';
return 0;
}
length = utf8length_int (source, length);
for (sidx = 0, didx = 0; sidx < length; sidx++)
{
if (*(source + sidx) == '\0')
{
break;
}
if (*(source + sidx) != ' ')
{
*(dest + didx) = *(source + sidx);
didx++;
}
}
*(dest + didx) = '\0';
return didx;
} /* End of ms_strncpclean() */
/**********************************************************************/ /**
* @brief Copy string, removing trailing spaces, always terminated
*
* Copy up to \a length bytes of UTF-8 characters from \a source to \a
* dest without any trailing spaces. The result is left justified and
* always null terminated.
*
* The destination string must have enough room needed for the
* characters within \a length and the null terminator, a maximum of
* \a length + 1.
*
* @param[out] dest Destination for terminated string
* @param[in] source Source string
* @param[in] length Length of characters for destination string in bytes
*
* @returns The number of characters (not including the null terminator) in
* the destination string
***************************************************************************/
int
ms_strncpcleantail (char *dest, const char *source, int length)
{
int idx;
int pretail;
if (!dest)
return 0;
if (!source)
{
*dest = '\0';
return 0;
}
length = utf8length_int (source, length);
*(dest + length) = '\0';
pretail = 0;
for (idx = length - 1; idx >= 0; idx--)
{
if (!pretail && *(source + idx) == ' ')
{
*(dest + idx) = '\0';
}
else
{
pretail++;
*(dest + idx) = *(source + idx);
}
}
return pretail;
} /* End of ms_strncpcleantail() */
/**********************************************************************/ /**
* @brief Copy fixed number of characters into unterminated string
*
* Copy \a length bytes of UTF-8 characters from \a source to \a dest,
* padding the right side with spaces and leave open-ended, aka
* un-terminated. The result is left justified and \e never null
* terminated.
*
* The destination string must have enough room for \a length characters.
*
* @param[out] dest Destination for unterminated string
* @param[in] source Source string
* @param[in] length Length of characters for destination string in bytes
*
* @returns the number of characters copied from the source string
***************************************************************************/
int
ms_strncpopen (char *dest, const char *source, int length)
{
int didx;
int dcnt = 0;
int utf8max;
if (!dest)
return 0;
if (!source)
{
for (didx = 0; didx < length; didx++)
{
*(dest + didx) = ' ';
}
return 0;
}
utf8max = utf8length_int (source, length);
for (didx = 0; didx < length; didx++)
{
if (didx < utf8max)
{
*(dest + didx) = *(source + didx);
dcnt++;
}
else
{
*(dest + didx) = ' ';
}
}
return dcnt;
} /* End of ms_strncpopen() */
/**********************************************************************/ /**
* @brief Compute the month and day-of-month from a year and day-of-year
*
* @param[in] year Year in range 1000-2262
* @param[in] yday Day of year in range 1-365 or 366 for leap year
* @param[out] month Month in range 1-12
* @param[out] mday Day of month in range 1-31
*
* @retval 0 on success
* @retval -1 on error
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_doy2md (int year, int yday, int *month, int *mday)
{
int idx;
const int(*days)[12];
if (!month || !mday)
{
ms_log (2, "%s(): Required input not defined: 'month' or 'mday'\n", __func__);
return -1;
}
if (!VALIDYEAR (year))
{
ms_log (2, "year (%d) is out of range\n", year);
return -1;
}
if (!VALIDYEARDAY (year, yday))
{
ms_log (2, "day-of-year (%d) is out of range for year %d\n", yday, year);
return -1;
}
days = (LEAPYEAR (year)) ? &monthdays_leap : &monthdays;
for (idx = 0; idx < 12; idx++)
{
yday -= (*days)[idx];
if (yday <= 0)
{
*month = idx + 1;
*mday = (*days)[idx] + yday;
break;
}
}
return 0;
} /* End of ms_doy2md() */
/**********************************************************************/ /**
* @brief Compute the day-of-year from a year, month and day-of-month
*
* @param[in] year Year in range 1000-2262
* @param[in] month Month in range 1-12
* @param[in] mday Day of month in range 1-31 (or appropriate last day)
* @param[out] yday Day of year in range 1-366 or 366 for leap year
*
* @retval 0 on success
* @retval -1 on error
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_md2doy (int year, int month, int mday, int *yday)
{
int idx;
const int(*days)[12];
if (!yday)
{
ms_log (2, "%s(): Required input not defined: 'yday'\n", __func__);
return -1;
}
if (!VALIDYEAR (year))
{
ms_log (2, "year (%d) is out of range\n", year);
return -1;
}
if (!VALIDMONTH (month))
{
ms_log (2, "month (%d) is out of range\n", month);
return -1;
}
if (!VALIDMONTHDAY (year, month, mday))
{
ms_log (2, "day-of-month (%d) is out of range for year %d and month %d\n", mday, year, month);
return -1;
}
days = (LEAPYEAR (year)) ? &monthdays_leap : &monthdays;
*yday = 0;
month--;
for (idx = 0; idx < 12; idx++)
{
if (idx == month)
{
*yday += mday;
break;
}
*yday += (*days)[idx];
}
return 0;
} /* End of ms_md2doy() */
/**********************************************************************/ /**
* @brief Convert an ::nstime_t to individual date-time components
*
* Each of the destination date-time are optional, pass NULL if the
* value is not desired.
*
* @param[in] nstime Time value to convert
* @param[out] year Year with century, like 2018
* @param[out] yday Day of year, 1 - 366
* @param[out] hour Hour, 0 - 23
* @param[out] min Minute, 0 - 59
* @param[out] sec Second, 0 - 60, where 60 is a leap second
* @param[out] nsec Nanoseconds, 0 - 999999999
*
* @retval 0 on success
* @retval -1 on error
***************************************************************************/
int
ms_nstime2time (nstime_t nstime, uint16_t *year, uint16_t *yday,
uint8_t *hour, uint8_t *min, uint8_t *sec, uint32_t *nsec)
{
struct tm tms;
int64_t isec;
int32_t ifract;
/* Reduce to Unix/POSIX epoch time and fractional seconds */
isec = MS_NSTIME2EPOCH (nstime);
ifract = (int)(nstime - (isec * NSTMODULUS));
/* Adjust for negative epoch times */
if (nstime < 0 && ifract != 0)
{
isec -= 1;
ifract = NSTMODULUS - (-ifract);
}
if (year || yday || hour || min || sec)
if (!(ms_gmtime64_r (&isec, &tms)))
return -1;
if (year)
*year = tms.tm_year + 1900;
if (yday)
*yday = tms.tm_yday + 1;
if (hour)
*hour = tms.tm_hour;
if (min)
*min = tms.tm_min;
if (sec)
*sec = tms.tm_sec;
if (nsec)
*nsec = ifract;
return 0;
} /* End of ms_nstime2time() */
/**********************************************************************/ /**
* @brief Convert an ::nstime_t to a time string
*
* Create a time string representation of a high precision epoch time
* in ISO 8601 and SEED formats.
*
* The provided \a timestr buffer must have enough room for the
* resulting time string, a maximum of 36 characters + terminating NULL.
*
* The \a subseconds flag controls whether the subsecond portion of
* the time is included or not. The value of \a subseconds is ignored
* when the \a format is \c NANOSECONDEPOCH. When non-zero subseconds
* are "trimmed" using these flags there is no rounding, instead it is
* simple truncation.
*
* @param[in] nstime Time value to convert
* @param[out] timestr Buffer for ISO time string
* @param timeformat Time string format, one of @ref ms_timeformat_t
* @param subseconds Inclusion of subseconds, one of @ref ms_subseconds_t
*
* @returns Pointer to the resulting string or NULL on error.
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
char *
ms_nstime2timestr (nstime_t nstime, char *timestr,
ms_timeformat_t timeformat, ms_subseconds_t subseconds)
{
struct tm tms = {0};
int64_t rawisec;
int rawnanosec;
int64_t isec;
int nanosec;
int microsec;
int submicro;
int printed = 0;
int expected = 0;
if (!timestr)
{
ms_log (2, "%s(): Required input not defined: 'timestr'\n", __func__);
return NULL;
}
/* Reduce to Unix/POSIX epoch time and fractional nanoseconds */
isec = rawisec = MS_NSTIME2EPOCH (nstime);
nanosec = rawnanosec = (int)(nstime - (isec * NSTMODULUS));
/* Adjust for negative epoch times */
if (nstime < 0 && nanosec != 0)
{
isec -= 1;
nanosec = NSTMODULUS - (-nanosec);
rawnanosec *= -1;
}
/* Determine microsecond and sub-microsecond values */
microsec = nanosec / 1000;
submicro = nanosec - (microsec * 1000);
/* Calculate date-time parts if needed by format */
if (timeformat == ISOMONTHDAY || timeformat == ISOMONTHDAY_Z ||
timeformat == ISOMONTHDAY_DOY || timeformat == ISOMONTHDAY_DOY_Z ||
timeformat == ISOMONTHDAY_SPACE || timeformat == ISOMONTHDAY_SPACE_Z ||
timeformat == SEEDORDINAL)
{
if (!(ms_gmtime64_r (&isec, &tms)))
{
ms_log (2, "Error converting epoch-time of (%" PRId64 ") to date-time components\n", isec);
return NULL;
}
}
/* Print no subseconds */
if (subseconds == NONE ||
(subseconds == MICRO_NONE && microsec == 0) ||
(subseconds == NANO_NONE && nanosec == 0) ||
(subseconds == NANO_MICRO_NONE && nanosec == 0))
{
switch (timeformat)
{
case ISOMONTHDAY:
case ISOMONTHDAY_Z:
case ISOMONTHDAY_SPACE:
case ISOMONTHDAY_SPACE_Z:
expected = (timeformat == ISOMONTHDAY_Z || timeformat == ISOMONTHDAY_SPACE_Z) ? 20 : 19;
printed = snprintf (timestr, expected + 1, "%4d-%02d-%02d%c%02d:%02d:%02d%s",
tms.tm_year + 1900, tms.tm_mon + 1, tms.tm_mday,
(timeformat == ISOMONTHDAY_SPACE || timeformat == ISOMONTHDAY_SPACE_Z) ? ' ' : 'T',
tms.tm_hour, tms.tm_min, tms.tm_sec,
(timeformat == ISOMONTHDAY_Z || timeformat == ISOMONTHDAY_SPACE_Z) ? "Z" : "");
break;
case ISOMONTHDAY_DOY:
case ISOMONTHDAY_DOY_Z:
expected = (timeformat == ISOMONTHDAY_DOY_Z) ? 26 : 25;
printed = snprintf (timestr, expected + 1, "%4d-%02d-%02dT%02d:%02d:%02d%s (%03d)",
tms.tm_year + 1900, tms.tm_mon + 1, tms.tm_mday,
tms.tm_hour, tms.tm_min, tms.tm_sec,
(timeformat == ISOMONTHDAY_DOY_Z) ? "Z" : "",