zic.c File Reference

#include "version.h"
#include "private.h"
#include "locale.h"
#include "tzfile.h"
#include <fcntl.h>
#include <stdarg.h>
#include <stddef.h>
#include <sys/stat.h>

Classes
struct	attype
struct	link
struct	lookup
struct	rule
struct	zone

Macros
#define	BIG_BANG   (- (1LL << 59))
#define	DC_DOM   0 /* 1..31 */ /* unused */
#define	DC_DOWGEQ   1 /* 1..31 */ /* 0..6 (Sun..Sat) */
#define	DC_DOWLEQ   2 /* 1..31 */ /* 0..6 (Sun..Sat) */
#define	DO(field)   fwrite(tzh.field, sizeof tzh.field, 1, fp)
#define	LC_LEAP   3
#define	LC_LINK   2
#define	LC_RULE   0
#define	LC_ZONE   1
#define	LDAYSPERWEEK   ((zic_t) DAYSPERWEEK)
#define	LEAP_FIELDS   7
#define	LF_FROM   1
#define	LF_TO   2
#define	LINK_FIELDS   3
#define	linkat(fromdir, from, todir, to, flag)   (itssymlink(from) ? (errno = ENOTSUP, -1) : link(from, to))
#define	LP_CORR   5
#define	LP_DAY   3
#define	LP_MONTH   2
#define	LP_ROLL   6
#define	LP_TIME   4
#define	LP_YEAR   1
#define	MKDIR_UMASK   0755
#define	PRIdLINENO   PRIdMAX
#define	PRIdZIC   PRIdFAST64
#define	RF_ABBRVAR   9
#define	RF_COMMAND   4
#define	RF_DAY   6
#define	RF_HIYEAR   3
#define	RF_LOYEAR   2
#define	RF_MONTH   5
#define	RF_NAME   1
#define	RF_STDOFF   8
#define	RF_TOD   7
#define	RULE_FIELDS   10
#define	SCNdZIC   SCNdFAST64
#define	TIME_T_BITS_IN_FILE   64
#define	YR_MAXIMUM   1
#define	YR_MINIMUM   0
#define	YR_ONLY   2
#define	ZF_FORMAT   4
#define	ZF_GMTOFF   2
#define	ZF_NAME   1
#define	ZF_RULE   3
#define	ZF_TILDAY   7
#define	ZF_TILMONTH   6
#define	ZF_TILTIME   8
#define	ZF_TILYEAR   5
#define	ZFC_FORMAT   2
#define	ZFC_GMTOFF   0
#define	ZFC_RULE   1
#define	ZFC_TILDAY   5
#define	ZFC_TILMONTH   4
#define	ZFC_TILTIME   6
#define	ZFC_TILYEAR   3
#define	ZIC_MAX   INT_FAST64_MAX
#define	ZIC_MAX_ABBR_LEN_WO_WARN   6
#define	ZIC_MIN   INT_FAST64_MIN
#define	ZIC_VERSION   '3'
#define	ZIC_VERSION_PRE_2013   '2'
#define	ZONE_MAXFIELDS   9
#define	ZONE_MINFIELDS   5
#define	ZONEC_MAXFIELDS   7
#define	ZONEC_MINFIELDS   3

Typedefs
typedef intmax_t	lineno
typedef int_fast64_t	zic_t

Enumerations
enum	{ PERCENT_Z_LEN_BOUND = sizeof "+995959" - 1 }
enum	{ WORK_AROUND_QTBUG_53071 = true }
enum	{ WORK_AROUND_GNOME_BUG_730332 = true }
enum	{ YEAR_BY_YEAR_ZONE = 1 }

Functions
static char const *	abbroffset (char *buf, zic_t offset)
static void	addtt (zic_t starttime, int type)
static int	addtype (zic_t, char const *, bool, bool, bool)
static void	adjleap (void)
static void	associate (void)
static int	atcomp (const void *avp, const void *bvp)
static void	ATTRIBUTE_FORMAT ((printf, 1, 0))
static void	ATTRIBUTE_FORMAT ((printf, 1, 2))
static struct lookup const *	byword (const char *string, const struct lookup *lp)
static void	change_directory (char const *dir)
static ATTRIBUTE_PURE bool	ciequal (register const char *ap, register const char *bp)
static void	close_file (FILE *stream, char const *dir, char const *name)
static bool	componentcheck (char const *name, char const *component, char const *component_end)
static void	convert (const int_fast32_t val, char *const buf)
static void	convert64 (const zic_t val, char *const buf)
static size_t	doabbr (char *abbr, struct zone const *zp, char const *letters, zic_t stdoff, bool doquotes)
static void	dolink (const char *, const char *, bool)
static void	eat (char const *name, lineno num)
static void	eats (char const *name, lineno num, char const *rname, lineno rnum)
static char *	ecpyalloc (char const *str)
static void *	emalloc (size_t size)
static void *	erealloc (void *ptr, size_t size)
static char **	getfields (char *buf)
static char **	getfields (register char *cp)
static zic_t	gethms (const char *string, const char *errstring, bool)
static void *	growalloc (void *ptr, size_t itemsize, ptrdiff_t nitems, ptrdiff_t *nitems_alloc)
static int	hardlinkerr (char const *from, char const *to)
static void	infile (const char *filename)
static void	inleap (char **fields, int nfields)
static void	inlink (char **fields, int nfields)
static void	inrule (char **fields, int nfields)
static bool	inzcont (char **fields, int nfields)
static bool	inzone (char **fields, int nfields)
static bool	inzsub (char **, int, bool)
static bool	is32 (const zic_t x)
static bool	is_alpha (char a)
static bool	is_space (char a)
static ATTRIBUTE_PURE bool	itsabbr (register const char *abbr, register const char *word)
static bool	itsdir (char const *)
static bool	itssymlink (char const *)
static void	leapadd (zic_t, bool, int, int)
static char	lowerit (char)
int	main (int argc, char **argv)
static ATTRIBUTE_PURE void *	memcheck (void *ptr)
static _Noreturn void	memory_exhausted (const char *msg)
static void	mkdirs (char const *, bool)
static bool	namecheck (const char *name)
static void	newabbr (const char *abbr)
static zic_t	oadd (zic_t t1, zic_t t2)
static void	outzone (const struct zone *zp, ptrdiff_t ntzones)
static void	puttzcode (const int_fast32_t val, FILE *const fp)
static void	puttzcode64 (const zic_t val, FILE *const fp)
static int	rcomp (const void *cp1, const void *cp2)
static char *	relname (char const *from, char const *to)
static zic_t	rpytime (const struct rule *rp, zic_t wantedy)
static int	rule_cmp (struct rule const *a, struct rule const *b)
static void	rulesub (struct rule *rp, const char *loyearp, const char *hiyearp, const char *typep, const char *monthp, const char *dayp, const char *timep)
static char *	shellquote (char *b, char const *s)
static ATTRIBUTE_PURE size_t	size_product (size_t nitems, size_t itemsize)
static int	stringoffset (char *result, zic_t offset)
static int	stringrule (char *result, const struct rule *const rp, const zic_t dstoff, const zic_t gmtoff)
static int	stringzone (char *result, struct zone const *zpfirst, ptrdiff_t zonecount)
static zic_t	tadd (zic_t t1, zic_t t2)
static _Noreturn void	time_overflow (void)
static void	updateminmax (const zic_t x)
static _Noreturn void	usage (FILE *stream, int status)
static void	writezone (const char *const name, const char *const string, char version)
static bool	yearistype (zic_t year, const char *type)

Variables
static unsigned char	abbrinds [TZ_MAX_TYPES]
static struct attype *	attypes
static struct lookup const	begin_years []
static int	charcnt
static char	chars [TZ_MAX_CHARS]
static zic_t	corr [TZ_MAX_LEAPS]
static const char *	directory
static const zic_t	early_time
static struct lookup const	end_years []
static bool	errors
static const char *	filename
static zic_t	gmtoffs [TZ_MAX_TYPES]
static char	isdsts [TZ_MAX_TYPES]
static struct lookup const	lasts []
static const char *	lcltime
static struct lookup const	leap_types []
static int	leapcnt
static zic_t	leapmaxyear
static zic_t	leapminyear
static const char *	leapsec
static bool	leapseen
static const int	len_months [2][MONSPERYEAR]
static const int	len_years [2]
static struct lookup const	line_codes []
static lineno	linenum
static struct link *	links
static int	max_abbrvar_len = PERCENT_Z_LEN_BOUND
static int	max_format_len
static zic_t const	max_time = MAXVAL(zic_t, TIME_T_BITS_IN_FILE)
static zic_t	max_year
static zic_t const	min_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE)
static zic_t	min_year
static struct lookup const	mon_names []
static ptrdiff_t	nlinks
static ptrdiff_t	nlinks_alloc
static bool	noise
static ptrdiff_t	nrules
static ptrdiff_t	nrules_alloc
static ptrdiff_t	nzones
static ptrdiff_t	nzones_alloc
static const char *	progname
static const char *	psxrules
static ptrdiff_t const	PTRDIFF_MAX = MAXVAL(ptrdiff_t, TYPE_BIT(ptrdiff_t))
static const char *	rfilename
static lineno	rlinenum
static char	roll [TZ_MAX_LEAPS]
static struct rule *	rules
static ptrdiff_t	timecnt
static ptrdiff_t	timecnt_alloc
static zic_t	trans [TZ_MAX_LEAPS]
static bool	ttisgmts [TZ_MAX_TYPES]
static bool	ttisstds [TZ_MAX_TYPES]
static int	typecnt
static bool	warnings
static struct lookup const	wday_names []
static const char *	yitcommand
static struct zone *	zones

Macro Definition Documentation

#define BIG_BANG   (- (1LL << 59))

#define DC_DOM   0 /* 1..31 */ /* unused */

Referenced by outzone(), rulesub(), stringrule(), and stringzone().

#define DC_DOWGEQ   1 /* 1..31 */ /* 0..6 (Sun..Sat) */

Referenced by rpytime(), rulesub(), and stringrule().

#define DC_DOWLEQ   2 /* 1..31 */ /* 0..6 (Sun..Sat) */

Referenced by rpytime(), rulesub(), and stringrule().

#define DO

(

field

)

fwrite(tzh.field, sizeof tzh.field, 1, fp)

Referenced by writezone().

#define LC_LEAP   3

Referenced by infile().

#define LC_LINK   2

Referenced by infile().

#define LC_RULE   0

Referenced by infile().

#define LC_ZONE   1

Referenced by infile().

#define LDAYSPERWEEK   ((zic_t) DAYSPERWEEK)

Referenced by rpytime().

#define LEAP_FIELDS   7

Referenced by inleap().

#define LF_FROM   1

Referenced by inlink().

#define LF_TO   2

Referenced by inlink().

#define LINK_FIELDS   3

Referenced by inlink().

#define linkat	(		fromdir,
			from,
			todir,
			to,
			flag
	)		(itssymlink(from) ? (errno = ENOTSUP, -1) : link(from, to))

Referenced by hardlinkerr().

#define LP_CORR   5

Referenced by inleap().

#define LP_DAY   3

Referenced by inleap().

#define LP_MONTH   2

Referenced by inleap().

#define LP_ROLL   6

Referenced by inleap().

#define LP_TIME   4

Referenced by inleap().

#define LP_YEAR   1

Referenced by inleap().

#define MKDIR_UMASK   0755

Referenced by mkdirs().

#define PRIdLINENO   PRIdMAX

Referenced by ATTRIBUTE_FORMAT(), and inzone().

#define PRIdZIC   PRIdFAST64

Referenced by yearistype().

#define RF_ABBRVAR   9

Referenced by inrule().

#define RF_COMMAND   4

Referenced by inrule().

#define RF_DAY   6

Referenced by inrule().

#define RF_HIYEAR   3

Referenced by inrule().

#define RF_LOYEAR   2

Referenced by inrule().

#define RF_MONTH   5

Referenced by inrule().

#define RF_NAME   1

Referenced by inrule().

#define RF_STDOFF   8

Referenced by inrule().

#define RF_TOD   7

Referenced by inrule().

#define RULE_FIELDS   10

Referenced by inrule().

#define SCNdZIC   SCNdFAST64

Referenced by gethms(), inleap(), and rulesub().

#define TIME_T_BITS_IN_FILE   64

#define YR_MAXIMUM   1

Referenced by rulesub().

#define YR_MINIMUM   0

Referenced by rulesub().

#define YR_ONLY   2

Referenced by rulesub().

#define ZF_FORMAT   4

Referenced by inzsub().

#define ZF_GMTOFF   2

Referenced by inzsub().

#define ZF_NAME   1

Referenced by inzone(), and inzsub().

#define ZF_RULE   3

Referenced by inzsub().

#define ZF_TILDAY   7

Referenced by inzsub().

#define ZF_TILMONTH   6

Referenced by inzsub().

#define ZF_TILTIME   8

Referenced by inzsub().

#define ZF_TILYEAR   5

Referenced by inzsub().

#define ZFC_FORMAT   2

Referenced by inzsub().

#define ZFC_GMTOFF   0

Referenced by inzsub().

#define ZFC_RULE   1

Referenced by inzsub().

#define ZFC_TILDAY   5

Referenced by inzsub().

#define ZFC_TILMONTH   4

Referenced by inzsub().

#define ZFC_TILTIME   6

Referenced by inzsub().

#define ZFC_TILYEAR   3

Referenced by inzsub().

#define ZIC_MAX   INT_FAST64_MAX

Referenced by gethms(), oadd(), outzone(), rpytime(), rulesub(), and stringzone().

#define ZIC_MAX_ABBR_LEN_WO_WARN   6

Referenced by newabbr().

#define ZIC_MIN   INT_FAST64_MIN

Referenced by oadd(), outzone(), rpytime(), and rulesub().

#define ZIC_VERSION   '3'

Referenced by outzone().

#define ZIC_VERSION_PRE_2013   '2'

Referenced by outzone().

#define ZONE_MAXFIELDS   9

Referenced by inzone().

#define ZONE_MINFIELDS   5

#define ZONEC_MAXFIELDS   7

Referenced by inzcont().

#define ZONEC_MINFIELDS   3

Typedef Documentation

typedef intmax_t lineno

typedef int_fast64_t zic_t

Enumeration Type Documentation

anonymous enum

Enumerator
PERCENT_Z_LEN_BOUND

anonymous enum

Enumerator
WORK_AROUND_QTBUG_53071

anonymous enum

Enumerator
WORK_AROUND_GNOME_BUG_730332

anonymous enum

Enumerator
YEAR_BY_YEAR_ZONE

Function Documentation

static char const* abbroffset ( char *  buf, zic_t  offset  )

static

References _, MINSPERHOUR, and SECSPERMIN.

Referenced by doabbr().

static void addtt ( zic_t  starttime, int  type  )

static

References attype::at, attypes, attype::dontmerge, growalloc(), timecnt, type(), and attype::type.

Referenced by outzone().

static int addtype ( zic_t  gmtoff, char const *  abbr, bool  isdst, bool  ttisstd, bool  ttisgmt  )

static

References _, charcnt, EXIT_FAILURE, gmtoff(), newabbr(), typecnt, and TZ_MAX_TYPES.

Referenced by outzone(), and writezone().

static void adjleap ( void  )

static

References leapcnt, and tadd().

Referenced by main().

static void associate ( void  )

static

References _, eat(), EXIT_FAILURE, gethms(), nrules, nzones, rule::r_filename, rule::r_linenum, rule::r_name, rcomp(), zone::z_filename, zone::z_format_specifier, zone::z_linenum, zone::z_nrules, zone::z_rule, zone::z_rules, and zone::z_stdoff.

Referenced by main().

static int atcomp ( const void *  avp, const void *  bvp  )

static

Referenced by writezone().

static void ATTRIBUTE_FORMAT ( (printf, 1, 0)  )

static

References _, and PRIdLINENO.

static void ATTRIBUTE_FORMAT ( (printf, 1, 2)  )

static

static ATTRIBUTE_PURE const struct lookup * byword ( const char *  string, const struct lookup *  lp  )

static

References ciequal(), itsabbr(), and lookup::l_word.

Referenced by infile(), inleap(), and rulesub().

static void change_directory ( char const *  dir )

static

References _, EXIT_FAILURE, and mkdirs().

Referenced by main().

static ATTRIBUTE_PURE bool ciequal ( register const char *  ap, register const char *  bp  )

static

References lowerit().

Referenced by byword().

static void close_file ( FILE *  stream, char const *  dir, char const *  name  )

static

References _, and EXIT_FAILURE.

Referenced by dolink(), infile(), main(), usage(), and writezone().

static bool componentcheck ( char const *  name, char const *  component, char const *  component_end  )

static

References _.

Referenced by namecheck().

static void convert ( const int_fast32_t  val, char *const  buf  )

static

Referenced by puttzcode(), and writezone().

static void convert64 ( const zic_t  val, char *const  buf  )

static

Referenced by puttzcode64().

static size_t doabbr ( char *  abbr, struct zone const *  zp, char const *  letters, zic_t  stdoff, bool  doquotes  )

static

References abbroffset(), is_alpha(), PERCENT_Z_LEN_BOUND, zone::z_format, zone::z_format_specifier, and zone::z_gmtoff.

Referenced by outzone(), and stringzone().

static void dolink ( const char *  fromfield, const char *  tofield, bool  staysymlink  )

static

References _, close_file(), ENOTSUP, EXIT_FAILURE, hardlinkerr(), itsdir(), itssymlink(), mkdirs(), and relname().

Referenced by main().

static void eat ( char const *  name, lineno  num  )

static

References eats().

Referenced by associate(), infile(), main(), and outzone().

static void eats ( char const *  name, lineno  num, char const *  rname, lineno  rnum  )

static

Referenced by eat(), and outzone().

static char* ecpyalloc ( char const *  str )

static

References memcheck().

Referenced by inlink(), inrule(), inzsub(), mkdirs(), and rulesub().

static void* emalloc ( size_t  size )

static

References memcheck().

Referenced by getfields(), itsdir(), outzone(), relname(), writezone(), and yearistype().

static void* erealloc ( void *  ptr, size_t  size  )

static

References memcheck().

Referenced by growalloc().

static char** getfields ( char *  buf )

static

Referenced by infile().

static char** getfields ( register char *  cp )

static

References _, emalloc(), EXIT_FAILURE, is_space(), and size_product().

static zic_t gethms ( const char *  string, const char *  errstring, bool  signable  )

static

References _, HOURSPERDAY, MINSPERHOUR, oadd(), SCNdZIC, SECSPERHOUR, SECSPERMIN, and ZIC_MAX.

Referenced by associate(), inleap(), inrule(), inzsub(), and rulesub().

static void* growalloc ( void *  ptr, size_t  itemsize, ptrdiff_t  nitems, ptrdiff_t *  nitems_alloc  )

static

References _, erealloc(), memory_exhausted(), PTRDIFF_MAX, SIZE_MAX, size_product(), and WORK_AROUND_QTBUG_53071.

Referenced by addtt(), inlink(), inrule(), and inzsub().

static int hardlinkerr ( char const *  from, char const *  to  )

static

References linkat.

Referenced by dolink().

static void infile ( const char *  filename )

static

References _, byword(), close_file(), eat(), EXIT_FAILURE, getfields(), inleap(), inlink(), inrule(), inzcont(), inzone(), lookup::l_value, LC_LEAP, LC_LINK, LC_RULE, and LC_ZONE.

Referenced by main().

static void inleap ( char **  fields, int  nfields  )

static

References _, byword(), EPOCH_YEAR, gethms(), isleap, lookup::l_value, LEAP_FIELDS, leapadd(), LP_CORR, LP_DAY, LP_MONTH, LP_ROLL, LP_TIME, LP_YEAR, oadd(), SCNdZIC, SECSPERDAY, tadd(), and TM_JANUARY.

Referenced by infile().

static void inlink ( char **  fields, int  nfields  )

static

References _, ecpyalloc(), filename, growalloc(), link::l_filename, link::l_from, link::l_linenum, link::l_to, LF_FROM, LF_TO, linenum, LINK_FIELDS, and namecheck().

Referenced by infile().

static void inrule ( char **  fields, int  nfields  )

static

References _, ecpyalloc(), filename, gethms(), growalloc(), linenum, rule::r_abbrvar, rule::r_filename, rule::r_linenum, rule::r_name, rule::r_stdoff, RF_ABBRVAR, RF_COMMAND, RF_DAY, RF_HIYEAR, RF_LOYEAR, RF_MONTH, RF_NAME, RF_STDOFF, RF_TOD, RULE_FIELDS, and rulesub().

Referenced by infile().

static bool inzcont ( char **  fields, int  nfields  )

static

References _, inzsub(), and ZONEC_MAXFIELDS.

Referenced by infile().

static bool inzone ( char **  fields, int  nfields  )

static

References _, inzsub(), nzones, PRIdLINENO, TZDEFAULT, TZDEFRULES, ZF_NAME, and ZONE_MAXFIELDS.

Referenced by infile().

static bool inzsub ( char **  fields, int  nfields, bool  iscont  )

static

References _, ecpyalloc(), filename, gethms(), growalloc(), linenum, namecheck(), rule::r_filename, rule::r_linenum, rule::r_loyear, rpytime(), rulesub(), zone::z_filename, zone::z_format, zone::z_format_specifier, zone::z_gmtoff, zone::z_linenum, zone::z_name, zone::z_rule, zone::z_untilrule, zone::z_untiltime, ZF_FORMAT, ZF_GMTOFF, ZF_NAME, ZF_RULE, ZF_TILDAY, ZF_TILMONTH, ZF_TILTIME, ZF_TILYEAR, ZFC_FORMAT, ZFC_GMTOFF, ZFC_RULE, ZFC_TILDAY, ZFC_TILMONTH, ZFC_TILTIME, and ZFC_TILYEAR.

Referenced by inzcont(), and inzone().

static bool is32 ( const zic_t  x )

static

References INT32_MAX, and INT32_MIN.

Referenced by writezone().

static bool is_alpha ( char  a )

static

Referenced by abbrok(), doabbr(), istrftime(), mkdirs(), and newabbr().

static bool is_space ( char  a )

static

Referenced by getfields().

static ATTRIBUTE_PURE bool itsabbr ( register const char *  abbr, register const char *  word  )

static

References lowerit().

Referenced by byword().

static bool itsdir ( char const *  name )

static

References emalloc(), and EOVERFLOW.

Referenced by dolink(), and mkdirs().

static bool itssymlink ( char const *  name )

static

Referenced by dolink().

static void leapadd ( zic_t  t, bool  positive, int  rolling, int  count  )

static

References _, EXIT_FAILURE, leapcnt, and TZ_MAX_LEAPS.

Referenced by inleap().

static char lowerit ( char  a )

static

Referenced by ciequal(), itsabbr(), and rulesub().

int main	(	int	argc,
		char **	argv
	)

References _, adjleap(), associate(), change_directory(), close_file(), dolink(), eat(), EXIT_FAILURE, EXIT_SUCCESS, infile(), nlinks, nzones, outzone(), PKGVERSION, TYPE_BIT, TZ_DOMAIN, TZDEFAULT, TZDEFRULES, TZDIR, TZVERSION, usage(), and zone::z_name.

static ATTRIBUTE_PURE void* memcheck ( void *  ptr )

static

References memory_exhausted().

Referenced by ecpyalloc(), emalloc(), and erealloc().

static _Noreturn void memory_exhausted ( const char *  msg )

static

References _, and EXIT_FAILURE.

Referenced by growalloc(), memcheck(), and size_product().

static void mkdirs ( char const *  argname, bool  ancestors  )

static

References _, ecpyalloc(), EXIT_FAILURE, is_alpha(), itsdir(), and MKDIR_UMASK.

Referenced by change_directory(), dolink(), and writezone().

static bool namecheck ( const char *  name )

static

References _, and componentcheck().

Referenced by inlink(), and inzsub().

static void newabbr ( const char *  abbr )

static

References _, EXIT_FAILURE, GRANDPARENTED, is_alpha(), TZ_MAX_CHARS, and ZIC_MAX_ABBR_LEN_WO_WARN.

Referenced by addtype().

static ATTRIBUTE_PURE zic_t oadd ( zic_t  t1, zic_t  t2  )

static

References time_overflow(), ZIC_MAX, and ZIC_MIN.

Referenced by gethms(), inleap(), outzone(), and rpytime().

static void outzone ( const struct zone *  zp, ptrdiff_t  ntzones  )

static

References _, addtt(), addtype(), attype::at, attypes, DC_DOM, doabbr(), attype::dontmerge, eat(), eats(), emalloc(), EPOCH_YEAR, gmtoff(), INITIALIZE, max_abbrvar_len, max_year, oadd(), rule::r_abbrvar, rule::r_dayofmonth, rule::r_dycode, rule::r_filename, rule::r_hiwasnum, rule::r_hiyear, rule::r_linenum, rule::r_lowasnum, rule::r_loyear, rule::r_month, rule::r_stdoff, rule::r_temp, rule::r_tod, rule::r_todisgmt, rule::r_todisstd, rule::r_todo, rule::r_yrtype, rpytime(), stringzone(), tadd(), timecnt, TM_JANUARY, type(), updateminmax(), writezone(), YEAR_BY_YEAR_ZONE, yearistype(), YEARSPERREPEAT, zone::z_filename, zone::z_format, zone::z_gmtoff, zone::z_linenum, zone::z_name, zone::z_nrules, zone::z_rules, zone::z_stdoff, zone::z_untilrule, zone::z_untiltime, ZIC_MAX, ZIC_MIN, ZIC_VERSION, and ZIC_VERSION_PRE_2013.

Referenced by main().

static void puttzcode ( const int_fast32_t  val, FILE *const  fp  )

static

References convert().

Referenced by writezone().

static void puttzcode64 ( const zic_t  val, FILE *const  fp  )

static

References convert64().

Referenced by writezone().

static int rcomp ( const void *  cp1, const void *  cp2  )

static

Referenced by associate().

static char* relname ( char const *  from, char const *  to  )

static

References emalloc(), and SIZE_MAX.

Referenced by dolink().

static zic_t rpytime ( const struct rule *  rp, zic_t  wantedy  )

static

References _, DC_DOWGEQ, DC_DOWLEQ, EPOCH_WDAY, EPOCH_YEAR, EXIT_FAILURE, isleap, LDAYSPERWEEK, max_time, min_time, oadd(), rule::r_dayofmonth, rule::r_dycode, rule::r_month, rule::r_tod, rule::r_wday, SECSPERDAY, tadd(), TM_FEBRUARY, TM_JANUARY, ZIC_MAX, and ZIC_MIN.

Referenced by inzsub(), and outzone().

static int rule_cmp ( struct rule const *  a, struct rule const *  b  )

static

References rule::r_dayofmonth, rule::r_hiyear, and rule::r_month.

Referenced by stringzone().

static void rulesub ( struct rule *  rp, const char *  loyearp, const char *  hiyearp, const char *  typep, const char *  monthp, const char *  dayp, const char *  timep  )

static

References _, byword(), DC_DOM, DC_DOWGEQ, DC_DOWLEQ, ecpyalloc(), EXIT_FAILURE, gethms(), lookup::l_value, lowerit(), rule::r_dayofmonth, rule::r_dycode, rule::r_hiwasnum, rule::r_hiyear, rule::r_lowasnum, rule::r_loyear, rule::r_month, rule::r_tod, rule::r_todisgmt, rule::r_todisstd, rule::r_wday, rule::r_yrtype, SCNdZIC, YR_MAXIMUM, YR_MINIMUM, YR_ONLY, ZIC_MAX, and ZIC_MIN.

Referenced by inrule(), and inzsub().

static char* shellquote ( char *  b, char const *  s  )

static

Referenced by yearistype().

static ATTRIBUTE_PURE size_t size_product ( size_t  nitems, size_t  itemsize  )

static

References _, memory_exhausted(), and SIZE_MAX.

Referenced by getfields(), growalloc(), and writezone().

static int stringoffset ( char *  result, zic_t  offset  )

static

References DAYSPERWEEK, HOURSPERDAY, MINSPERHOUR, and SECSPERMIN.

Referenced by stringrule(), and stringzone().

static int stringrule ( char *  result, const struct rule *const  rp, const zic_t  dstoff, const zic_t  gmtoff  )

static

References DAYSPERWEEK, DC_DOM, DC_DOWGEQ, DC_DOWLEQ, gmtoff(), MINSPERHOUR, rule::r_dayofmonth, rule::r_dycode, rule::r_month, rule::r_stdoff, rule::r_tod, rule::r_todisgmt, rule::r_todisstd, rule::r_wday, SECSPERDAY, SECSPERMIN, stringoffset(), and TM_FEBRUARY.

Referenced by stringzone().

static int stringzone ( char *  result, struct zone const *  zpfirst, ptrdiff_t  zonecount  )

static

References DC_DOM, doabbr(), MINSPERHOUR, rule::r_abbrvar, rule::r_dayofmonth, rule::r_dycode, rule::r_hiwasnum, rule::r_hiyear, rule::r_month, rule::r_stdoff, rule::r_tod, rule::r_todisgmt, rule::r_todisstd, rule::r_yrtype, rule_cmp(), SECSPERDAY, SECSPERMIN, stringoffset(), stringrule(), TM_DECEMBER, TM_JANUARY, YEAR_BY_YEAR_ZONE, zone::z_gmtoff, zone::z_nrules, zone::z_rules, zone::z_stdoff, and ZIC_MAX.

Referenced by outzone().

static ATTRIBUTE_PURE zic_t tadd ( zic_t  t1, zic_t  t2  )

static

References max_time, min_time, and time_overflow().

Referenced by adjleap(), inleap(), outzone(), rpytime(), and writezone().

static _Noreturn void time_overflow ( void  )

static

References _, and EXIT_FAILURE.

Referenced by oadd(), and tadd().

static void updateminmax ( const zic_t  x )

static

Referenced by outzone().

static _Noreturn void usage ( FILE *  stream, int  status  )

static

References _, close_file(), EXIT_SUCCESS, and REPORT_BUGS_TO.

Referenced by main().

static void writezone ( const char *const  name, const char *const  string, char  version  )

static

References _, addtype(), attype::at, atcomp(), attypes, close_file(), convert(), DO, emalloc(), EXIT_FAILURE, INT32_MIN, is32(), leapcnt, mkdirs(), puttzcode(), puttzcode64(), size_product(), tadd(), timecnt, type(), attype::type, typecnt, TZ_MAGIC, TZ_MAX_CHARS, TZ_MAX_TIMES, TZ_MAX_TYPES, tzhead::tzh_charcnt, tzhead::tzh_leapcnt, tzhead::tzh_magic, tzhead::tzh_reserved, tzhead::tzh_timecnt, tzhead::tzh_ttisgmtcnt, tzhead::tzh_ttisstdcnt, tzhead::tzh_typecnt, tzhead::tzh_version, and WORK_AROUND_QTBUG_53071.

Referenced by outzone().

static bool yearistype ( zic_t  year, const char *  type  )

static

References _, emalloc(), EXIT_FAILURE, INT_STRLEN_MAXIMUM, PRIdZIC, shellquote(), WEXITSTATUS, and WIFEXITED.

Referenced by outzone().

Variable Documentation

unsigned char abbrinds[TZ_MAX_TYPES]

static

struct attype * attypes

static

Referenced by addtt(), outzone(), and writezone().

struct lookup const begin_years[]

static

Initial value:

= {
        { "minimum",    YR_MINIMUM },
        { "maximum",    YR_MAXIMUM },
        { NULL,         0 }
}

int charcnt

static

Referenced by addtype(), tzloadbody(), and tzparse().

char chars[TZ_MAX_CHARS]

static

zic_t corr[TZ_MAX_LEAPS]

static

Referenced by timesub(), and tzloadbody().

const char* directory

static

const zic_t early_time

static

Initial value:

= (WORK_AROUND_GNOME_BUG_730332
                                 ? BIG_BANG
                                 : MINVAL(zic_t, TIME_T_BITS_IN_FILE))

struct lookup const end_years[]

static

Initial value:

= {
        { "minimum",    YR_MINIMUM },
        { "maximum",    YR_MAXIMUM },
        { "only",       YR_ONLY },
        { NULL,         0 }
}

bool errors

static

const char* filename

static

Referenced by inlink(), inrule(), and inzsub().

zic_t gmtoffs[TZ_MAX_TYPES]

static

char isdsts[TZ_MAX_TYPES]

static

struct lookup const lasts[]

static

Initial value:

= {
        { "last-Sunday",        TM_SUNDAY },
        { "last-Monday",        TM_MONDAY },
        { "last-Tuesday",       TM_TUESDAY },
        { "last-Wednesday",     TM_WEDNESDAY },
        { "last-Thursday",      TM_THURSDAY },
        { "last-Friday",        TM_FRIDAY },
        { "last-Saturday",      TM_SATURDAY },
        { NULL,                 0 }
}

const char* lcltime

static

struct lookup const leap_types[]

static

Initial value:

= {
        { "Rolling",    true },
        { "Stationary", false },
        { NULL,         0 }
}

int leapcnt

static

Referenced by adjleap(), leapadd(), tzloadbody(), and writezone().

zic_t leapmaxyear

static

zic_t leapminyear

static

const char* leapsec

static

bool leapseen

static

const int len_months[2][MONSPERYEAR]

static

Initial value:

= {
        { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
        { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
}

const int len_years[2]

static

Initial value:

= {
        DAYSPERNYEAR, DAYSPERLYEAR
}

struct lookup const line_codes[]

static

Initial value:

= {
        { "Rule",       LC_RULE },
        { "Zone",       LC_ZONE },
        { "Link",       LC_LINK },
        { "Leap",       LC_LEAP },
        { NULL,         0}
}

lineno linenum

static

Referenced by inlink(), inrule(), and inzsub().

struct link* links

static

int max_abbrvar_len = PERCENT_Z_LEN_BOUND

static

Referenced by outzone().

int max_format_len

static

zic_t const max_time = MAXVAL(zic_t, TIME_T_BITS_IN_FILE)

static

Referenced by rpytime(), and tadd().

zic_t max_year

static

Referenced by outzone().

zic_t const min_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE)

static

Referenced by rpytime(), and tadd().

zic_t min_year

static

struct lookup const mon_names[]

static

Initial value:

= {
        { "January",    TM_JANUARY },
        { "February",   TM_FEBRUARY },
        { "March",      TM_MARCH },
        { "April",      TM_APRIL },
        { "May",        TM_MAY },
        { "June",       TM_JUNE },
        { "July",       TM_JULY },
        { "August",     TM_AUGUST },
        { "September",  TM_SEPTEMBER },
        { "October",    TM_OCTOBER },
        { "November",   TM_NOVEMBER },
        { "December",   TM_DECEMBER },
        { NULL,         0 }
}

ptrdiff_t nlinks

static

Referenced by main().

ptrdiff_t nlinks_alloc

static

bool noise

static

ptrdiff_t nrules

static

Referenced by associate().

ptrdiff_t nrules_alloc

static

ptrdiff_t nzones

static

Referenced by associate(), inzone(), and main().

ptrdiff_t nzones_alloc

static

const char* progname

static

const char* psxrules

static

ptrdiff_t const PTRDIFF_MAX = MAXVAL(ptrdiff_t, TYPE_BIT(ptrdiff_t))

static

Referenced by growalloc().

const char* rfilename

static

lineno rlinenum

static

char roll[TZ_MAX_LEAPS]

static

struct rule* rules

static

ptrdiff_t timecnt

static

Referenced by addtt(), outzone(), tzloadbody(), tzparse(), and writezone().

ptrdiff_t timecnt_alloc

static

zic_t trans[TZ_MAX_LEAPS]

static

Referenced by tzloadbody().

bool ttisgmts[TZ_MAX_TYPES]

static

bool ttisstds[TZ_MAX_TYPES]

static

int typecnt

static

Referenced by addtype(), tzloadbody(), and writezone().

bool warnings

static

struct lookup const wday_names[]

static

Initial value:

= {
        { "Sunday",     TM_SUNDAY },
        { "Monday",     TM_MONDAY },
        { "Tuesday",    TM_TUESDAY },
        { "Wednesday",  TM_WEDNESDAY },
        { "Thursday",   TM_THURSDAY },
        { "Friday",     TM_FRIDAY },
        { "Saturday",   TM_SATURDAY },
        { NULL,         0 }
}

const char* yitcommand

static

struct zone* zones

static