From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- intl/icu/source/tools/tzcode/zic.c | 3156 ++++++++++++++++++++++++++++++++++++ 1 file changed, 3156 insertions(+) create mode 100644 intl/icu/source/tools/tzcode/zic.c (limited to 'intl/icu/source/tools/tzcode/zic.c') diff --git a/intl/icu/source/tools/tzcode/zic.c b/intl/icu/source/tools/tzcode/zic.c new file mode 100644 index 0000000000..54576780d5 --- /dev/null +++ b/intl/icu/source/tools/tzcode/zic.c @@ -0,0 +1,3156 @@ +/* +** This file is in the public domain, so clarified as of +** 2006-07-17 by Arthur David Olson. +*/ + +/* Enable extensions and modifications for ICU. */ +#define ICU + +/* Continue executing after link failure. Even if ICU is undefined + * (for vanilla zic behavior), ICU_LINKS should be defined, since zic + * appears to fail on the 2003 data the first time through during the + * linking phase. Running zic twice, with ICU_LINKS defined, causes + * links to be handled correctly. */ +#define ICU_LINKS + +#define LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH + +#ifdef ICU +/* These constants are embedded in dynamically generated header + * version.h in the standard tzcode distribution. */ +static char const PKGVERSION[]="N/A"; +static char const TZVERSION[]="N/A"; +static char const REPORT_BUGS_TO[]="N/A"; +#else +#include "version.h" +#endif +#include "private.h" +#include "locale.h" +#include "tzfile.h" + +#include +#include + +#define ZIC_VERSION_PRE_2013 '2' +#define ZIC_VERSION '3' + +typedef int_fast64_t zic_t; +#define ZIC_MIN INT_FAST64_MIN +#define ZIC_MAX INT_FAST64_MAX +#define SCNdZIC SCNdFAST64 + +#ifndef ZIC_MAX_ABBR_LEN_WO_WARN +#define ZIC_MAX_ABBR_LEN_WO_WARN 6 +#endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */ + +#if HAVE_SYS_STAT_H +#include "sys/stat.h" +#endif +#ifdef S_IRUSR +#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) +#else +#define MKDIR_UMASK 0755 +#endif + +#ifdef ICU +#include "tz2icu.h" +#endif + +/* +** On some ancient hosts, predicates like `isspace(C)' are defined +** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, +** which says they are defined only if C == ((unsigned char) C) || C == EOF. +** Neither the C Standard nor Posix require that `isascii' exist. +** For portability, we check both ancient and modern requirements. +** If isascii is not defined, the isascii check succeeds trivially. +*/ +#include "ctype.h" +#ifndef isascii +#define isascii(x) 1 +#endif + +#define end(cp) (strchr((cp), '\0')) + +struct rule { + const char * r_filename; + int r_linenum; + const char * r_name; + + zic_t r_loyear; /* for example, 1986 */ + zic_t r_hiyear; /* for example, 1986 */ + const char * r_yrtype; + int r_lowasnum; + int r_hiwasnum; + + int r_month; /* 0..11 */ + + int r_dycode; /* see below */ + int r_dayofmonth; + int r_wday; + + zic_t r_tod; /* time from midnight */ + int r_todisstd; /* above is standard time if true */ + /* or wall clock time if false */ + int r_todisgmt; /* above is GMT if true */ + /* or local time if false */ + zic_t r_stdoff; /* offset from standard time */ + const char * r_abbrvar; /* variable part of abbreviation */ + + int r_todo; /* a rule to do (used in outzone) */ + zic_t r_temp; /* used in outzone */ +}; + +/* +** r_dycode r_dayofmonth r_wday +*/ + +#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) */ + +struct zone { + const char * z_filename; + int z_linenum; + + const char * z_name; + zic_t z_gmtoff; + const char * z_rule; + const char * z_format; + + zic_t z_stdoff; + + struct rule * z_rules; + int z_nrules; + + struct rule z_untilrule; + zic_t z_untiltime; +}; + +extern int getopt(int argc, char * const argv[], + const char * options); +extern int link(const char * fromname, const char * toname); +extern char * optarg; +extern int optind; + +#if ! HAVE_LINK +# define link(from, to) (-1) +#endif +#if ! HAVE_SYMLINK +# define symlink(from, to) (-1) +#endif + +static void addtt(zic_t starttime, int type); +#ifdef ICU +static int addtype(const zic_t gmtoff, const zic_t rawoff, const zic_t dstoff, + char *const abbr, int isdst, + int ttisstd, int ttisgmt); +#else +static int addtype(zic_t gmtoff, const char * abbr, int isdst, + int ttisstd, int ttisgmt); +#endif +static void leapadd(zic_t t, int positive, int rolling, int count); +static void adjleap(void); +static void associate(void); +static void dolink(const char * fromfield, const char * tofield); +static char ** getfields(char * buf); +static zic_t gethms(const char * string, const char * errstrng, + int signable); +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 int inzcont(char ** fields, int nfields); +static int inzone(char ** fields, int nfields); +static int inzsub(char ** fields, int nfields, int iscont); +static int itsdir(const char * name); +static int lowerit(int c); +static int mkdirs(char * filename); +static void newabbr(const char * abbr); +static zic_t oadd(zic_t t1, zic_t t2); +static void outzone(const struct zone * zp, int ntzones); +static zic_t rpytime(const struct rule * rp, zic_t wantedy); +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 zic_t tadd(zic_t t1, zic_t t2); +static int yearistype(int year, const char * type); +#ifdef ICU +static void emit_icu_zone(FILE* f, const char* zoneName, int zoneOffset, + const struct rule* rule, + int ruleIndex, int startYear); +static void emit_icu_link(FILE* f, const char* from, const char* to); +static void emit_icu_rule(FILE* f, const struct rule* r, int ruleIndex); +static int add_icu_final_rules(const struct rule* r1, const struct rule* r2); +#endif + +static int charcnt; +static int errors; +static const char * filename; +static int leapcnt; +static int leapseen; +static zic_t leapminyear; +static zic_t leapmaxyear; +static int linenum; +static int max_abbrvar_len; +static int max_format_len; +static zic_t max_year; +static zic_t min_year; +static int noise; +static const char * rfilename; +static int rlinenum; +static const char * progname; +static int timecnt; +static int timecnt_alloc; +static int typecnt; + +/* +** Line codes. +*/ + +#define LC_RULE 0 +#define LC_ZONE 1 +#define LC_LINK 2 +#define LC_LEAP 3 + +/* +** Which fields are which on a Zone line. +*/ + +#define ZF_NAME 1 +#define ZF_GMTOFF 2 +#define ZF_RULE 3 +#define ZF_FORMAT 4 +#define ZF_TILYEAR 5 +#define ZF_TILMONTH 6 +#define ZF_TILDAY 7 +#define ZF_TILTIME 8 +#define ZONE_MINFIELDS 5 +#define ZONE_MAXFIELDS 9 + +/* +** Which fields are which on a Zone continuation line. +*/ + +#define ZFC_GMTOFF 0 +#define ZFC_RULE 1 +#define ZFC_FORMAT 2 +#define ZFC_TILYEAR 3 +#define ZFC_TILMONTH 4 +#define ZFC_TILDAY 5 +#define ZFC_TILTIME 6 +#define ZONEC_MINFIELDS 3 +#define ZONEC_MAXFIELDS 7 + +/* +** Which files are which on a Rule line. +*/ + +#define RF_NAME 1 +#define RF_LOYEAR 2 +#define RF_HIYEAR 3 +#define RF_COMMAND 4 +#define RF_MONTH 5 +#define RF_DAY 6 +#define RF_TOD 7 +#define RF_STDOFF 8 +#define RF_ABBRVAR 9 +#define RULE_FIELDS 10 + +/* +** Which fields are which on a Link line. +*/ + +#define LF_FROM 1 +#define LF_TO 2 +#define LINK_FIELDS 3 + +/* +** Which fields are which on a Leap line. +*/ + +#define LP_YEAR 1 +#define LP_MONTH 2 +#define LP_DAY 3 +#define LP_TIME 4 +#define LP_CORR 5 +#define LP_ROLL 6 +#define LEAP_FIELDS 7 + +/* +** Year synonyms. +*/ + +#define YR_MINIMUM 0 +#define YR_MAXIMUM 1 +#define YR_ONLY 2 + +static struct rule * rules; +static int nrules; /* number of rules */ +static int nrules_alloc; + +static struct zone * zones; +static int nzones; /* number of zones */ +static int nzones_alloc; + +struct link { + const char * l_filename; + int l_linenum; + const char * l_from; + const char * l_to; +}; + +static struct link * links; +static int nlinks; +static int nlinks_alloc; + +struct lookup { + const char * l_word; + const int l_value; +}; + +#ifdef ICU +/* Indices into rules[] for final rules. They will occur in pairs, + * with finalRules[i] occurring before finalRules[i+1] in the year. + * Each zone need only store a start year, a standard offset, and an + * index into finalRules[]. FinalRules[] are aliases into rules[]. */ +static const struct rule ** finalRules = NULL; +static int finalRulesCount = 0; +#endif + +static struct lookup const * byword(const char * string, + const struct lookup * lp); + +static struct lookup const line_codes[] = { + { "Rule", LC_RULE }, + { "Zone", LC_ZONE }, + { "Link", LC_LINK }, + { "Leap", LC_LEAP }, + { NULL, 0} +}; + +static struct lookup const mon_names[] = { + { "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 } +}; + +static struct lookup const wday_names[] = { + { "Sunday", TM_SUNDAY }, + { "Monday", TM_MONDAY }, + { "Tuesday", TM_TUESDAY }, + { "Wednesday", TM_WEDNESDAY }, + { "Thursday", TM_THURSDAY }, + { "Friday", TM_FRIDAY }, + { "Saturday", TM_SATURDAY }, + { NULL, 0 } +}; + +static struct lookup const lasts[] = { + { "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 } +}; + +static struct lookup const begin_years[] = { + { "minimum", YR_MINIMUM }, + { "maximum", YR_MAXIMUM }, + { NULL, 0 } +}; + +static struct lookup const end_years[] = { + { "minimum", YR_MINIMUM }, + { "maximum", YR_MAXIMUM }, + { "only", YR_ONLY }, + { NULL, 0 } +}; + +static struct lookup const leap_types[] = { + { "Rolling", true }, + { "Stationary", false }, + { NULL, 0 } +}; + +static const int len_months[2][MONSPERYEAR] = { + { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, + { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } +}; + +static const int len_years[2] = { + DAYSPERNYEAR, DAYSPERLYEAR +}; + +static struct attype { + zic_t at; + unsigned char type; +} * attypes; +static zic_t gmtoffs[TZ_MAX_TYPES]; +#ifdef ICU +/* gmtoffs[i] = rawoffs[i] + dstoffs[i] */ +static zic_t rawoffs[TZ_MAX_TYPES]; +static zic_t dstoffs[TZ_MAX_TYPES]; +#endif +static char isdsts[TZ_MAX_TYPES]; +static unsigned char abbrinds[TZ_MAX_TYPES]; +static char ttisstds[TZ_MAX_TYPES]; +static char ttisgmts[TZ_MAX_TYPES]; +static char chars[TZ_MAX_CHARS]; +static zic_t trans[TZ_MAX_LEAPS]; +static zic_t corr[TZ_MAX_LEAPS]; +static char roll[TZ_MAX_LEAPS]; + +/* +** Memory allocation. +*/ + +static _Noreturn void +memory_exhausted(const char *msg) +{ + fprintf(stderr, _("%s: Memory exhausted: %s\n"), progname, msg); + exit(EXIT_FAILURE); +} + +static ATTRIBUTE_PURE size_t +size_product(size_t nitems, size_t itemsize) +{ + if (SIZE_MAX / itemsize < nitems) + memory_exhausted("size overflow"); + return nitems * itemsize; +} + +static ATTRIBUTE_PURE void * +memcheck(void *const ptr) +{ + if (ptr == NULL) + memory_exhausted(strerror(errno)); + return ptr; +} + +#define emalloc(size) memcheck(malloc(size)) +#define erealloc(ptr, size) memcheck(realloc(ptr, size)) +#define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) +#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) + +static void * +growalloc(void *ptr, size_t itemsize, int nitems, int *nitems_alloc) +{ + if (nitems < *nitems_alloc) + return ptr; + else { + int amax = INT_MAX < SIZE_MAX ? INT_MAX : SIZE_MAX; + if ((amax - 1) / 3 * 2 < *nitems_alloc) + memory_exhausted("int overflow"); + *nitems_alloc = *nitems_alloc + (*nitems_alloc >> 1) + 1; + return erealloc(ptr, size_product(*nitems_alloc, itemsize)); + } +} + +/* +** Error handling. +*/ + +static void +eats(const char *const name, const int num, const char *const rname, + const int rnum) +{ + filename = name; + linenum = num; + rfilename = rname; + rlinenum = rnum; +} + +static void +eat(const char *const name, const int num) +{ + eats(name, num, NULL, -1); +} + +static void ATTRIBUTE_FORMAT((printf, 1, 0)) +verror(const char *const string, va_list args) +{ + /* + ** Match the format of "cc" to allow sh users to + ** zic ... 2>&1 | error -t "*" -v + ** on BSD systems. + */ + fprintf(stderr, _("\"%s\", line %d: "), filename, linenum); + vfprintf(stderr, string, args); + if (rfilename != NULL) + (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), + rfilename, rlinenum); + (void) fprintf(stderr, "\n"); + ++errors; +} + +static void ATTRIBUTE_FORMAT((printf, 1, 2)) +error(const char *const string, ...) +{ + va_list args; + va_start(args, string); + verror(string, args); + va_end(args); +} + +static void ATTRIBUTE_FORMAT((printf, 1, 2)) +warning(const char *const string, ...) +{ + va_list args; + fprintf(stderr, _("warning: ")); + va_start(args, string); + verror(string, args); + va_end(args); + --errors; +} + +static _Noreturn void +usage(FILE *stream, int status) +{ + (void) fprintf(stream, _("%s: usage is %s \ +[ --version ] [ --help ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\ +\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n\ +\n\ +Report bugs to %s.\n"), + progname, progname, REPORT_BUGS_TO); + exit(status); +} + +#ifdef ICU +/* File into which we will write supplemental ICU data. */ +static FILE * icuFile; + +static void +emit_icu_zone(FILE* f, const char* zoneName, int zoneOffset, + const struct rule* rule, + int ruleIndex, int startYear) { + /* machine-readable section */ + fprintf(f, "zone %s %d %d %s", zoneName, zoneOffset, startYear, rule->r_name); + + /* human-readable section */ + fprintf(f, " # zone %s, offset %d, year >= %d, rule %s (%d)\n", + zoneName, zoneOffset, startYear, + rule->r_name, ruleIndex); +} + +static void +emit_icu_link(FILE* f, const char* from, const char* to) { + /* machine-readable section */ + fprintf(f, "link %s %s\n", from, to); +} + +static const char* DYCODE[] = {"DOM", "DOWGEQ", "DOWLEQ"}; + +static void +emit_icu_rule(FILE* f, const struct rule* r, int ruleIndex) { + if (r->r_yrtype != NULL) { + warning("year types not supported by ICU"); + fprintf(stderr, "rule %s, file %s, line %d\n", + r->r_name, r->r_filename, r->r_linenum); + } + + /* machine-readable section */ + fprintf(f, "rule %s %s %d %d %d %lld %d %d %lld", + r->r_name, DYCODE[r->r_dycode], + r->r_month, r->r_dayofmonth, + (r->r_dycode == DC_DOM ? -1 : r->r_wday), + r->r_tod, r->r_todisstd, r->r_todisgmt, r->r_stdoff + ); + + /* human-readable section */ + fprintf(f, " # %d: %s, file %s, line %d", + ruleIndex, r->r_name, r->r_filename, r->r_linenum); + fprintf(f, ", mode %s", DYCODE[r->r_dycode]); + fprintf(f, ", %s, dom %d", mon_names[r->r_month].l_word, r->r_dayofmonth); + if (r->r_dycode != DC_DOM) { + fprintf(f, ", %s", wday_names[r->r_wday].l_word); + } + fprintf(f, ", time %lld", r->r_tod); + fprintf(f, ", isstd %d", r->r_todisstd); + fprintf(f, ", isgmt %d", r->r_todisgmt); + fprintf(f, ", offset %lld", r->r_stdoff); + fprintf(f, "\n"); +} + +static int +add_icu_final_rules(const struct rule* r1, const struct rule* r2) { + int i; + + for (i=0; ir_name, + ((const struct rule *) cp2)->r_name); +} + +static void +associate(void) +{ + register struct zone * zp; + register struct rule * rp; + register int base, out; + register int i, j; + + if (nrules != 0) { + (void) qsort(rules, nrules, sizeof *rules, rcomp); + for (i = 0; i < nrules - 1; ++i) { + if (strcmp(rules[i].r_name, + rules[i + 1].r_name) != 0) + continue; + if (strcmp(rules[i].r_filename, + rules[i + 1].r_filename) == 0) + continue; + eat(rules[i].r_filename, rules[i].r_linenum); + warning(_("same rule name in multiple files")); + eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); + warning(_("same rule name in multiple files")); + for (j = i + 2; j < nrules; ++j) { + if (strcmp(rules[i].r_name, + rules[j].r_name) != 0) + break; + if (strcmp(rules[i].r_filename, + rules[j].r_filename) == 0) + continue; + if (strcmp(rules[i + 1].r_filename, + rules[j].r_filename) == 0) + continue; + break; + } + i = j - 1; + } + } + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + zp->z_rules = NULL; + zp->z_nrules = 0; + } + for (base = 0; base < nrules; base = out) { + rp = &rules[base]; + for (out = base + 1; out < nrules; ++out) + if (strcmp(rp->r_name, rules[out].r_name) != 0) + break; + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + if (strcmp(zp->z_rule, rp->r_name) != 0) + continue; + zp->z_rules = rp; + zp->z_nrules = out - base; + } + } + for (i = 0; i < nzones; ++i) { + zp = &zones[i]; + if (zp->z_nrules == 0) { + /* + ** Maybe we have a local standard time offset. + */ + eat(zp->z_filename, zp->z_linenum); + zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), + true); + /* + ** Note, though, that if there's no rule, + ** a '%s' in the format is a bad thing. + */ + if (strchr(zp->z_format, '%') != 0) + error("%s", _("%s in ruleless zone")); + } + } + if (errors) + exit(EXIT_FAILURE); +} + +static void +infile(const char *name) +{ + register FILE * fp; + register char ** fields; + register char * cp; + register const struct lookup * lp; + register int nfields; + register int wantcont; + register int num; + char buf[BUFSIZ]; + + if (strcmp(name, "-") == 0) { + name = _("standard input"); + fp = stdin; + } else if ((fp = fopen(name, "r")) == NULL) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), + progname, name, e); + exit(EXIT_FAILURE); + } + wantcont = false; + for (num = 1; ; ++num) { + eat(name, num); + if (fgets(buf, sizeof buf, fp) != buf) + break; + cp = strchr(buf, '\n'); + if (cp == NULL) { + error(_("line too long")); + exit(EXIT_FAILURE); + } + *cp = '\0'; + fields = getfields(buf); + nfields = 0; + while (fields[nfields] != NULL) { + static char nada; + + if (strcmp(fields[nfields], "-") == 0) + fields[nfields] = &nada; + ++nfields; + } + if (nfields == 0) { + /* nothing to do */ + } else if (wantcont) { + wantcont = inzcont(fields, nfields); + } else { + lp = byword(fields[0], line_codes); + if (lp == NULL) + error(_("input line of unknown type")); + else switch ((int) (lp->l_value)) { + case LC_RULE: + inrule(fields, nfields); + wantcont = false; + break; + case LC_ZONE: + wantcont = inzone(fields, nfields); + break; + case LC_LINK: + inlink(fields, nfields); + wantcont = false; + break; + case LC_LEAP: + if (name != leapsec) + (void) fprintf(stderr, +_("%s: Leap line in non leap seconds file %s\n"), + progname, name); + else inleap(fields, nfields); + wantcont = false; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, +_("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + exit(EXIT_FAILURE); + } + } + free(fields); + } + if (ferror(fp)) { + (void) fprintf(stderr, _("%s: Error reading %s\n"), + progname, filename); + exit(EXIT_FAILURE); + } + if (fp != stdin && fclose(fp)) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), + progname, filename, e); + exit(EXIT_FAILURE); + } + if (wantcont) + error(_("expected continuation line not found")); +} + +/* +** Convert a string of one of the forms +** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss +** into a number of seconds. +** A null string maps to zero. +** Call error with errstring and return zero on errors. +*/ + +static zic_t +gethms(const char *string, const char *const errstring, const int signable) +{ + zic_t hh; + int mm, ss, sign; + + if (string == NULL || *string == '\0') + return 0; + if (!signable) + sign = 1; + else if (*string == '-') { + sign = -1; + ++string; + } else sign = 1; + if (sscanf(string, scheck(string, "%"SCNdZIC), &hh) == 1) + mm = ss = 0; + else if (sscanf(string, scheck(string, "%"SCNdZIC":%d"), &hh, &mm) == 2) + ss = 0; + else if (sscanf(string, scheck(string, "%"SCNdZIC":%d:%d"), + &hh, &mm, &ss) != 3) { + error("%s", errstring); + return 0; + } + if (hh < 0 || + mm < 0 || mm >= MINSPERHOUR || + ss < 0 || ss > SECSPERMIN) { + error("%s", errstring); + return 0; + } + if (ZIC_MAX / SECSPERHOUR < hh) { + error(_("time overflow")); + return 0; + } + if (noise && hh == HOURSPERDAY && mm == 0 && ss == 0) + warning(_("24:00 not handled by pre-1998 versions of zic")); + if (noise && (hh > HOURSPERDAY || + (hh == HOURSPERDAY && (mm != 0 || ss != 0)))) +warning(_("values over 24 hours not handled by pre-2007 versions of zic")); + return oadd(sign * hh * SECSPERHOUR, + sign * (mm * SECSPERMIN + ss)); +} + +static void +inrule(register char **const fields, const int nfields) +{ + static struct rule r; + + if (nfields != RULE_FIELDS) { + error(_("wrong number of fields on Rule line")); + return; + } + if (*fields[RF_NAME] == '\0') { + error(_("nameless rule")); + return; + } + r.r_filename = filename; + r.r_linenum = linenum; + r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), true); + rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], + fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); + r.r_name = ecpyalloc(fields[RF_NAME]); + r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); + if (max_abbrvar_len < strlen(r.r_abbrvar)) + max_abbrvar_len = strlen(r.r_abbrvar); + rules = growalloc(rules, sizeof *rules, nrules, &nrules_alloc); + rules[nrules++] = r; +} + +static int +inzone(register char **const fields, const int nfields) +{ + register int i; + + if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { + error(_("wrong number of fields on Zone line")); + return false; + } + if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { + error( +_("\"Zone %s\" line and -l option are mutually exclusive"), + TZDEFAULT); + return false; + } + if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { + error( +_("\"Zone %s\" line and -p option are mutually exclusive"), + TZDEFRULES); + return false; + } + for (i = 0; i < nzones; ++i) + if (zones[i].z_name != NULL && + strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { + error( +_("duplicate zone name %s (file \"%s\", line %d)"), + fields[ZF_NAME], + zones[i].z_filename, + zones[i].z_linenum); + return false; + } + return inzsub(fields, nfields, false); +} + +static int +inzcont(register char **const fields, const int nfields) +{ + if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { + error(_("wrong number of fields on Zone continuation line")); + return false; + } + return inzsub(fields, nfields, true); +} + +static int +inzsub(register char **const fields, const int nfields, const int iscont) +{ + register char * cp; + static struct zone z; + register int i_gmtoff, i_rule, i_format; + register int i_untilyear, i_untilmonth; + register int i_untilday, i_untiltime; + register int hasuntil; + + if (iscont) { + i_gmtoff = ZFC_GMTOFF; + i_rule = ZFC_RULE; + i_format = ZFC_FORMAT; + i_untilyear = ZFC_TILYEAR; + i_untilmonth = ZFC_TILMONTH; + i_untilday = ZFC_TILDAY; + i_untiltime = ZFC_TILTIME; + z.z_name = NULL; + } else { + i_gmtoff = ZF_GMTOFF; + i_rule = ZF_RULE; + i_format = ZF_FORMAT; + i_untilyear = ZF_TILYEAR; + i_untilmonth = ZF_TILMONTH; + i_untilday = ZF_TILDAY; + i_untiltime = ZF_TILTIME; + z.z_name = ecpyalloc(fields[ZF_NAME]); + } + z.z_filename = filename; + z.z_linenum = linenum; + z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UT offset"), true); + if ((cp = strchr(fields[i_format], '%')) != 0) { + if (*++cp != 's' || strchr(cp, '%') != 0) { + error(_("invalid abbreviation format")); + return false; + } + } + z.z_rule = ecpyalloc(fields[i_rule]); + z.z_format = ecpyalloc(fields[i_format]); + if (max_format_len < strlen(z.z_format)) + max_format_len = strlen(z.z_format); + hasuntil = nfields > i_untilyear; + if (hasuntil) { + z.z_untilrule.r_filename = filename; + z.z_untilrule.r_linenum = linenum; + rulesub(&z.z_untilrule, + fields[i_untilyear], + "only", + "", + (nfields > i_untilmonth) ? + fields[i_untilmonth] : "Jan", + (nfields > i_untilday) ? fields[i_untilday] : "1", + (nfields > i_untiltime) ? fields[i_untiltime] : "0"); + z.z_untiltime = rpytime(&z.z_untilrule, + z.z_untilrule.r_loyear); + if (iscont && nzones > 0 && + z.z_untiltime > min_time && + z.z_untiltime < max_time && + zones[nzones - 1].z_untiltime > min_time && + zones[nzones - 1].z_untiltime < max_time && + zones[nzones - 1].z_untiltime >= z.z_untiltime) { + error(_( +"Zone continuation line end time is not after end time of previous line" + )); + return false; + } + } + zones = growalloc(zones, sizeof *zones, nzones, &nzones_alloc); + zones[nzones++] = z; + /* + ** If there was an UNTIL field on this line, + ** there's more information about the zone on the next line. + */ + return hasuntil; +} + +static void +inleap(register char ** const fields, const int nfields) +{ + register const char * cp; + register const struct lookup * lp; + register int i, j; + zic_t year; + int month, day; + zic_t dayoff, tod; + zic_t t; + + if (nfields != LEAP_FIELDS) { + error(_("wrong number of fields on Leap line")); + return; + } + dayoff = 0; + cp = fields[LP_YEAR]; + if (sscanf(cp, scheck(cp, "%"SCNdZIC), &year) != 1) { + /* + ** Leapin' Lizards! + */ + error(_("invalid leaping year")); + return; + } + if (!leapseen || leapmaxyear < year) + leapmaxyear = year; + if (!leapseen || leapminyear > year) + leapminyear = year; + leapseen = true; + j = EPOCH_YEAR; + while (j != year) { + if (year > j) { + i = len_years[isleap(j)]; + ++j; + } else { + --j; + i = -len_years[isleap(j)]; + } + dayoff = oadd(dayoff, i); + } + if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { + error(_("invalid month name")); + return; + } + month = lp->l_value; + j = TM_JANUARY; + while (j != month) { + i = len_months[isleap(year)][j]; + dayoff = oadd(dayoff, i); + ++j; + } + cp = fields[LP_DAY]; + if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || + day <= 0 || day > len_months[isleap(year)][month]) { + error(_("invalid day of month")); + return; + } + dayoff = oadd(dayoff, day - 1); + if (dayoff < 0 && !TYPE_SIGNED(zic_t)) { + error(_("time before zero")); + return; + } + if (dayoff < min_time / SECSPERDAY) { + error(_("time too small")); + return; + } + if (dayoff > max_time / SECSPERDAY) { + error(_("time too large")); + return; + } + t = (zic_t) dayoff * SECSPERDAY; + tod = gethms(fields[LP_TIME], _("invalid time of day"), false); + cp = fields[LP_CORR]; + { + register int positive; + int count; + + if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ + positive = false; + count = 1; + } else if (strcmp(cp, "--") == 0) { + positive = false; + count = 2; + } else if (strcmp(cp, "+") == 0) { + positive = true; + count = 1; + } else if (strcmp(cp, "++") == 0) { + positive = true; + count = 2; + } else { + error(_("illegal CORRECTION field on Leap line")); + return; + } + if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { + error(_( + "illegal Rolling/Stationary field on Leap line" + )); + return; + } + leapadd(tadd(t, tod), positive, lp->l_value, count); + } +} + +static void +inlink(register char **const fields, const int nfields) +{ + struct link l; + + if (nfields != LINK_FIELDS) { + error(_("wrong number of fields on Link line")); + return; + } + if (*fields[LF_FROM] == '\0') { + error(_("blank FROM field on Link line")); + return; + } + if (*fields[LF_TO] == '\0') { + error(_("blank TO field on Link line")); + return; + } + l.l_filename = filename; + l.l_linenum = linenum; + l.l_from = ecpyalloc(fields[LF_FROM]); + l.l_to = ecpyalloc(fields[LF_TO]); + links = growalloc(links, sizeof *links, nlinks, &nlinks_alloc); + links[nlinks++] = l; +} + +static void +rulesub(register struct rule *const rp, + const char *const loyearp, + const char *const hiyearp, + const char *const typep, + const char *const monthp, + const char *const dayp, + const char *const timep) +{ + register const struct lookup * lp; + register const char * cp; + register char * dp; + register char * ep; + + if ((lp = byword(monthp, mon_names)) == NULL) { + error(_("invalid month name")); + return; + } + rp->r_month = lp->l_value; + rp->r_todisstd = false; + rp->r_todisgmt = false; + dp = ecpyalloc(timep); + if (*dp != '\0') { + ep = dp + strlen(dp) - 1; + switch (lowerit(*ep)) { + case 's': /* Standard */ + rp->r_todisstd = true; + rp->r_todisgmt = false; + *ep = '\0'; + break; + case 'w': /* Wall */ + rp->r_todisstd = false; + rp->r_todisgmt = false; + *ep = '\0'; + break; + case 'g': /* Greenwich */ + case 'u': /* Universal */ + case 'z': /* Zulu */ + rp->r_todisstd = true; + rp->r_todisgmt = true; + *ep = '\0'; + break; + } + } + rp->r_tod = gethms(dp, _("invalid time of day"), false); + free(dp); + /* + ** Year work. + */ + cp = loyearp; + lp = byword(cp, begin_years); + rp->r_lowasnum = lp == NULL; + if (!rp->r_lowasnum) switch ((int) lp->l_value) { + case YR_MINIMUM: + rp->r_loyear = ZIC_MIN; + break; + case YR_MAXIMUM: + rp->r_loyear = ZIC_MAX; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, + _("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + exit(EXIT_FAILURE); + } else if (sscanf(cp, scheck(cp, "%"SCNdZIC), &rp->r_loyear) != 1) { + error(_("invalid starting year")); + return; + } + cp = hiyearp; + lp = byword(cp, end_years); + rp->r_hiwasnum = lp == NULL; + if (!rp->r_hiwasnum) switch ((int) lp->l_value) { + case YR_MINIMUM: + rp->r_hiyear = ZIC_MIN; + break; + case YR_MAXIMUM: + rp->r_hiyear = ZIC_MAX; + break; + case YR_ONLY: + rp->r_hiyear = rp->r_loyear; + break; + default: /* "cannot happen" */ + (void) fprintf(stderr, + _("%s: panic: Invalid l_value %d\n"), + progname, lp->l_value); + exit(EXIT_FAILURE); + } else if (sscanf(cp, scheck(cp, "%"SCNdZIC), &rp->r_hiyear) != 1) { + error(_("invalid ending year")); + return; + } + if (rp->r_loyear > rp->r_hiyear) { + error(_("starting year greater than ending year")); + return; + } + if (*typep == '\0') + rp->r_yrtype = NULL; + else { + if (rp->r_loyear == rp->r_hiyear) { + error(_("typed single year")); + return; + } + rp->r_yrtype = ecpyalloc(typep); + } + /* + ** Day work. + ** Accept things such as: + ** 1 + ** last-Sunday + ** Sun<=20 + ** Sun>=7 + */ + dp = ecpyalloc(dayp); + if ((lp = byword(dp, lasts)) != NULL) { + rp->r_dycode = DC_DOWLEQ; + rp->r_wday = lp->l_value; + rp->r_dayofmonth = len_months[1][rp->r_month]; + } else { + if ((ep = strchr(dp, '<')) != 0) + rp->r_dycode = DC_DOWLEQ; + else if ((ep = strchr(dp, '>')) != 0) + rp->r_dycode = DC_DOWGEQ; + else { + ep = dp; + rp->r_dycode = DC_DOM; + } + if (rp->r_dycode != DC_DOM) { + *ep++ = 0; + if (*ep++ != '=') { + error(_("invalid day of month")); + free(dp); + return; + } + if ((lp = byword(dp, wday_names)) == NULL) { + error(_("invalid weekday name")); + free(dp); + return; + } + rp->r_wday = lp->l_value; + } + if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || + rp->r_dayofmonth <= 0 || + (rp->r_dayofmonth > len_months[1][rp->r_month])) { + error(_("invalid day of month")); + free(dp); + return; + } + } + free(dp); +} + +static void +convert(const int_fast32_t val, char *const buf) +{ + register int i; + register int shift; + unsigned char *const b = (unsigned char *) buf; + + for (i = 0, shift = 24; i < 4; ++i, shift -= 8) + b[i] = val >> shift; +} + +static void +convert64(const zic_t val, char *const buf) +{ + register int i; + register int shift; + unsigned char *const b = (unsigned char *) buf; + + for (i = 0, shift = 56; i < 8; ++i, shift -= 8) + b[i] = val >> shift; +} + +static void +puttzcode(const int_fast32_t val, FILE *const fp) +{ + char buf[4]; + + convert(val, buf); + (void) fwrite(buf, sizeof buf, 1, fp); +} + +static void +puttzcode64(const zic_t val, FILE *const fp) +{ + char buf[8]; + + convert64(val, buf); + (void) fwrite(buf, sizeof buf, 1, fp); +} + +static int +atcomp(const void *avp, const void *bvp) +{ + const zic_t a = ((const struct attype *) avp)->at; + const zic_t b = ((const struct attype *) bvp)->at; + + return (a < b) ? -1 : (a > b); +} + +static int +is32(const zic_t x) +{ + return INT32_MIN <= x && x <= INT32_MAX; +} + +static void +writezone(const char *const name, const char *const string, char version) +{ + register FILE * fp; + register int i, j; + register int leapcnt32, leapi32; + register int timecnt32, timei32; + register int pass; + static char * fullname; + static const struct tzhead tzh0; + static struct tzhead tzh; + zic_t *ats = emalloc(size_product(timecnt, sizeof *ats + 1)); + void *typesptr = ats + timecnt; + unsigned char *types = typesptr; + + /* + ** Sort. + */ + if (timecnt > 1) + (void) qsort(attypes, timecnt, sizeof *attypes, atcomp); + /* + ** Optimize. + */ + { + int fromi; + int toi; + + toi = 0; + fromi = 0; + while (fromi < timecnt && attypes[fromi].at < min_time) + ++fromi; + /* + ** Remember that type 0 is reserved. + */ + if (isdsts[1] == 0) + while (fromi < timecnt && attypes[fromi].type == 1) + ++fromi; /* handled by default rule */ + for ( ; fromi < timecnt; ++fromi) { + if (toi != 0 && ((attypes[fromi].at + + gmtoffs[attypes[toi - 1].type]) <= + (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0 + : attypes[toi - 2].type]))) { + attypes[toi - 1].type = + attypes[fromi].type; + continue; + } + if (toi == 0 || + attypes[toi - 1].type != attypes[fromi].type) + attypes[toi++] = attypes[fromi]; + } + timecnt = toi; + } + /* + ** Transfer. + */ + for (i = 0; i < timecnt; ++i) { + ats[i] = attypes[i].at; + types[i] = attypes[i].type; + } + /* + ** Correct for leap seconds. + */ + for (i = 0; i < timecnt; ++i) { + j = leapcnt; + while (--j >= 0) + if (ats[i] > trans[j] - corr[j]) { + ats[i] = tadd(ats[i], corr[j]); + break; + } + } + /* + ** Figure out 32-bit-limited starts and counts. + */ + timecnt32 = timecnt; + timei32 = 0; + leapcnt32 = leapcnt; + leapi32 = 0; + while (timecnt32 > 0 && !is32(ats[timecnt32 - 1])) + --timecnt32; + while (timecnt32 > 0 && !is32(ats[timei32])) { + --timecnt32; + ++timei32; + } + while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1])) + --leapcnt32; + while (leapcnt32 > 0 && !is32(trans[leapi32])) { + --leapcnt32; + ++leapi32; + } + fullname = erealloc(fullname, + strlen(directory) + 1 + strlen(name) + 1); + (void) sprintf(fullname, "%s/%s", directory, name); + /* + ** Remove old file, if any, to snap links. + */ + if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), + progname, fullname, e); + exit(EXIT_FAILURE); + } + if ((fp = fopen(fullname, "wb")) == NULL) { + if (mkdirs(fullname) != 0) + exit(EXIT_FAILURE); + if ((fp = fopen(fullname, "wb")) == NULL) { + const char *e = strerror(errno); + + (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), + progname, fullname, e); + exit(EXIT_FAILURE); + } + } + for (pass = 1; pass <= 2; ++pass) { + register int thistimei, thistimecnt; + register int thisleapi, thisleapcnt; + register int thistimelim, thisleaplim; + int writetype[TZ_MAX_TYPES]; + int typemap[TZ_MAX_TYPES]; + register int thistypecnt; + char thischars[TZ_MAX_CHARS]; + char thischarcnt; + int indmap[TZ_MAX_CHARS]; + + if (pass == 1) { + thistimei = timei32; + thistimecnt = timecnt32; + thisleapi = leapi32; + thisleapcnt = leapcnt32; + } else { + thistimei = 0; + thistimecnt = timecnt; + thisleapi = 0; + thisleapcnt = leapcnt; + } + thistimelim = thistimei + thistimecnt; + thisleaplim = thisleapi + thisleapcnt; + /* + ** Remember that type 0 is reserved. + */ + writetype[0] = false; + for (i = 1; i < typecnt; ++i) + writetype[i] = thistimecnt == timecnt; + if (thistimecnt == 0) { + /* + ** No transition times fall in the current + ** (32- or 64-bit) window. + */ + if (typecnt != 0) + writetype[typecnt - 1] = true; + } else { + for (i = thistimei - 1; i < thistimelim; ++i) + if (i >= 0) + writetype[types[i]] = true; + /* + ** For America/Godthab and Antarctica/Palmer + */ + /* + ** Remember that type 0 is reserved. + */ + if (thistimei == 0) + writetype[1] = true; + } +#ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH + /* + ** For some pre-2011 systems: if the last-to-be-written + ** standard (or daylight) type has an offset different from the + ** most recently used offset, + ** append an (unused) copy of the most recently used type + ** (to help get global "altzone" and "timezone" variables + ** set correctly). + */ + { + register int mrudst, mrustd, hidst, histd, type; + + hidst = histd = mrudst = mrustd = -1; + for (i = thistimei; i < thistimelim; ++i) + if (isdsts[types[i]]) + mrudst = types[i]; + else mrustd = types[i]; + for (i = 0; i < typecnt; ++i) + if (writetype[i]) { + if (isdsts[i]) + hidst = i; + else histd = i; + } + if (hidst >= 0 && mrudst >= 0 && hidst != mrudst && + gmtoffs[hidst] != gmtoffs[mrudst]) { + isdsts[mrudst] = -1; + type = addtype(gmtoffs[mrudst], +#ifdef ICU + rawoffs[mrudst], dstoffs[mrudst], +#endif + &chars[abbrinds[mrudst]], + true, + ttisstds[mrudst], + ttisgmts[mrudst]); + isdsts[mrudst] = true; + writetype[type] = true; + } + if (histd >= 0 && mrustd >= 0 && histd != mrustd && + gmtoffs[histd] != gmtoffs[mrustd]) { + isdsts[mrustd] = -1; + type = addtype(gmtoffs[mrustd], +#ifdef ICU + rawoffs[mrudst], dstoffs[mrudst], +#endif + &chars[abbrinds[mrustd]], + false, + ttisstds[mrustd], + ttisgmts[mrustd]); + isdsts[mrustd] = false; + writetype[type] = true; + } + } +#endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */ + thistypecnt = 0; + /* + ** Potentially, set type 0 to that of lowest-valued time. + */ + if (thistimei > 0) { + for (i = 1; i < typecnt; ++i) + if (writetype[i] && !isdsts[i]) + break; + if (i != types[thistimei - 1]) { + i = types[thistimei - 1]; + gmtoffs[0] = gmtoffs[i]; + isdsts[0] = isdsts[i]; + ttisstds[0] = ttisstds[i]; + ttisgmts[0] = ttisgmts[i]; + abbrinds[0] = abbrinds[i]; + writetype[0] = true; + writetype[i] = false; + } + } + for (i = 0; i < typecnt; ++i) + typemap[i] = writetype[i] ? thistypecnt++ : 0; + for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i) + indmap[i] = -1; + thischarcnt = 0; + for (i = 0; i < typecnt; ++i) { + register char * thisabbr; + + if (!writetype[i]) + continue; + if (indmap[abbrinds[i]] >= 0) + continue; + thisabbr = &chars[abbrinds[i]]; + for (j = 0; j < thischarcnt; ++j) + if (strcmp(&thischars[j], thisabbr) == 0) + break; + if (j == thischarcnt) { + (void) strcpy(&thischars[(int) thischarcnt], + thisabbr); + thischarcnt += strlen(thisabbr) + 1; + } + indmap[abbrinds[i]] = j; + } +#define DO(field) ((void) fwrite(tzh.field, sizeof tzh.field, 1, fp)) + tzh = tzh0; +#ifdef ICU + * (ICUZoneinfoVersion*) &tzh.tzh_reserved = TZ_ICU_VERSION; + (void) strncpy(tzh.tzh_magic, TZ_ICU_MAGIC, sizeof tzh.tzh_magic); +#else + (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); +#endif + tzh.tzh_version[0] = version; + convert(thistypecnt, tzh.tzh_ttisgmtcnt); + convert(thistypecnt, tzh.tzh_ttisstdcnt); + convert(thisleapcnt, tzh.tzh_leapcnt); + convert(thistimecnt, tzh.tzh_timecnt); + convert(thistypecnt, tzh.tzh_typecnt); + convert(thischarcnt, tzh.tzh_charcnt); + DO(tzh_magic); + DO(tzh_version); + DO(tzh_reserved); + DO(tzh_ttisgmtcnt); + DO(tzh_ttisstdcnt); + DO(tzh_leapcnt); + DO(tzh_timecnt); + DO(tzh_typecnt); + DO(tzh_charcnt); +#undef DO + for (i = thistimei; i < thistimelim; ++i) + if (pass == 1) + puttzcode(ats[i], fp); + else puttzcode64(ats[i], fp); + for (i = thistimei; i < thistimelim; ++i) { + unsigned char uc; + + uc = typemap[types[i]]; + (void) fwrite(&uc, sizeof uc, 1, fp); + } + for (i = 0; i < typecnt; ++i) + if (writetype[i]) { +#ifdef ICU + puttzcode(rawoffs[i], fp); + puttzcode(dstoffs[i], fp); +#else + puttzcode(gmtoffs[i], fp); +#endif + (void) putc(isdsts[i], fp); + (void) putc((unsigned char) indmap[abbrinds[i]], fp); + } + if (thischarcnt != 0) + (void) fwrite(thischars, sizeof thischars[0], + thischarcnt, fp); + for (i = thisleapi; i < thisleaplim; ++i) { + register zic_t todo; + + if (roll[i]) { + if (timecnt == 0 || trans[i] < ats[0]) { + j = 0; + while (isdsts[j]) + if (++j >= typecnt) { + j = 0; + break; + } + } else { + j = 1; + while (j < timecnt && + trans[i] >= ats[j]) + ++j; + j = types[j - 1]; + } + todo = tadd(trans[i], -gmtoffs[j]); + } else todo = trans[i]; + if (pass == 1) + puttzcode(todo, fp); + else puttzcode64(todo, fp); + puttzcode(corr[i], fp); + } + for (i = 0; i < typecnt; ++i) + if (writetype[i]) + (void) putc(ttisstds[i], fp); + for (i = 0; i < typecnt; ++i) + if (writetype[i]) + (void) putc(ttisgmts[i], fp); + } + (void) fprintf(fp, "\n%s\n", string); + if (ferror(fp) || fclose(fp)) { + (void) fprintf(stderr, _("%s: Error writing %s\n"), + progname, fullname); + exit(EXIT_FAILURE); + } + free(ats); +} + +static void +doabbr(char *const abbr, const char *const format, const char *const letters, + const int isdst, const int doquotes) +{ + register char * cp; + register char * slashp; + register int len; + + slashp = strchr(format, '/'); + if (slashp == NULL) { + if (letters == NULL) + (void) strcpy(abbr, format); + else (void) sprintf(abbr, format, letters); + } else if (isdst) { + (void) strcpy(abbr, slashp + 1); + } else { + if (slashp > format) + (void) strncpy(abbr, format, slashp - format); + abbr[slashp - format] = '\0'; + } + if (!doquotes) + return; + for (cp = abbr; *cp != '\0'; ++cp) + if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ", *cp) == NULL && + strchr("abcdefghijklmnopqrstuvwxyz", *cp) == NULL) + break; + len = strlen(abbr); + if (len > 0 && *cp == '\0') + return; + abbr[len + 2] = '\0'; + abbr[len + 1] = '>'; + for ( ; len > 0; --len) + abbr[len] = abbr[len - 1]; + abbr[0] = '<'; +} + +static void +updateminmax(const zic_t x) +{ + if (min_year > x) + min_year = x; + if (max_year < x) + max_year = x; +} + +static int +stringoffset(char *result, zic_t offset) +{ + register int hours; + register int minutes; + register int seconds; + + result[0] = '\0'; + if (offset < 0) { + (void) strcpy(result, "-"); + offset = -offset; + } + seconds = offset % SECSPERMIN; + offset /= SECSPERMIN; + minutes = offset % MINSPERHOUR; + offset /= MINSPERHOUR; + hours = offset; + if (hours >= HOURSPERDAY * DAYSPERWEEK) { + result[0] = '\0'; + return -1; + } + (void) sprintf(end(result), "%d", hours); + if (minutes != 0 || seconds != 0) { + (void) sprintf(end(result), ":%02d", minutes); + if (seconds != 0) + (void) sprintf(end(result), ":%02d", seconds); + } + return 0; +} + +static int +stringrule(char *result, const struct rule *const rp, const zic_t dstoff, + const zic_t gmtoff) +{ + register zic_t tod = rp->r_tod; + register int compat = 0; + + result = end(result); + if (rp->r_dycode == DC_DOM) { + register int month, total; + + if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY) + return -1; + total = 0; + for (month = 0; month < rp->r_month; ++month) + total += len_months[0][month]; + /* Omit the "J" in Jan and Feb, as that's shorter. */ + if (rp->r_month <= 1) + (void) sprintf(result, "%d", total + rp->r_dayofmonth - 1); + else + (void) sprintf(result, "J%d", total + rp->r_dayofmonth); + } else { + register int week; + register int wday = rp->r_wday; + register int wdayoff; + + if (rp->r_dycode == DC_DOWGEQ) { + wdayoff = (rp->r_dayofmonth - 1) % DAYSPERWEEK; + if (wdayoff) + compat = 2013; + wday -= wdayoff; + tod += wdayoff * SECSPERDAY; + week = 1 + (rp->r_dayofmonth - 1) / DAYSPERWEEK; + } else if (rp->r_dycode == DC_DOWLEQ) { + if (rp->r_dayofmonth == len_months[1][rp->r_month]) + week = 5; + else { + wdayoff = rp->r_dayofmonth % DAYSPERWEEK; + if (wdayoff) + compat = 2013; + wday -= wdayoff; + tod += wdayoff * SECSPERDAY; + week = rp->r_dayofmonth / DAYSPERWEEK; + } + } else return -1; /* "cannot happen" */ + if (wday < 0) + wday += DAYSPERWEEK; + (void) sprintf(result, "M%d.%d.%d", + rp->r_month + 1, week, wday); + } + if (rp->r_todisgmt) + tod += gmtoff; + if (rp->r_todisstd && rp->r_stdoff == 0) + tod += dstoff; + if (tod != 2 * SECSPERMIN * MINSPERHOUR) { + (void) strcat(result, "/"); + if (stringoffset(end(result), tod) != 0) + return -1; + if (tod < 0) { + if (compat < 2013) + compat = 2013; + } else if (SECSPERDAY <= tod) { + if (compat < 1994) + compat = 1994; + } + } + return compat; +} + +static int +rule_cmp(struct rule const *a, struct rule const *b) +{ + if (!a) + return -!!b; + if (!b) + return 1; + if (a->r_hiyear != b->r_hiyear) + return a->r_hiyear < b->r_hiyear ? -1 : 1; + if (a->r_month - b->r_month != 0) + return a->r_month - b->r_month; + return a->r_dayofmonth - b->r_dayofmonth; +} + +enum { YEAR_BY_YEAR_ZONE = 1 }; + +static int +stringzone(char *result, const struct zone *const zpfirst, const int zonecount) +{ + register const struct zone * zp; + register struct rule * rp; + register struct rule * stdrp; + register struct rule * dstrp; + register int i; + register const char * abbrvar; + register int compat = 0; + register int c; + struct rule stdr, dstr; + + result[0] = '\0'; + zp = zpfirst + zonecount - 1; + stdrp = dstrp = NULL; + for (i = 0; i < zp->z_nrules; ++i) { + rp = &zp->z_rules[i]; + if (rp->r_hiwasnum || rp->r_hiyear != ZIC_MAX) + continue; + if (rp->r_yrtype != NULL) + continue; + if (rp->r_stdoff == 0) { + if (stdrp == NULL) + stdrp = rp; + else return -1; + } else { + if (dstrp == NULL) + dstrp = rp; + else return -1; + } + } + if (stdrp == NULL && dstrp == NULL) { + /* + ** There are no rules running through "max". + ** Find the latest std rule in stdabbrrp + ** and latest rule of any type in stdrp. + */ + register struct rule *stdabbrrp = NULL; + for (i = 0; i < zp->z_nrules; ++i) { + rp = &zp->z_rules[i]; + if (rp->r_stdoff == 0 && rule_cmp(stdabbrrp, rp) < 0) + stdabbrrp = rp; + if (rule_cmp(stdrp, rp) < 0) + stdrp = rp; + } + /* + ** Horrid special case: if year is 2037, + ** presume this is a zone handled on a year-by-year basis; + ** do not try to apply a rule to the zone. + */ + if (stdrp != NULL && stdrp->r_hiyear == 2037) + return YEAR_BY_YEAR_ZONE; + + if (stdrp != NULL && stdrp->r_stdoff != 0) { + /* Perpetual DST. */ + dstr.r_month = TM_JANUARY; + dstr.r_dycode = DC_DOM; + dstr.r_dayofmonth = 1; + dstr.r_tod = 0; + dstr.r_todisstd = dstr.r_todisgmt = false; + dstr.r_stdoff = stdrp->r_stdoff; + dstr.r_abbrvar = stdrp->r_abbrvar; + stdr.r_month = TM_DECEMBER; + stdr.r_dycode = DC_DOM; + stdr.r_dayofmonth = 31; + stdr.r_tod = SECSPERDAY + stdrp->r_stdoff; + stdr.r_todisstd = stdr.r_todisgmt = false; + stdr.r_stdoff = 0; + stdr.r_abbrvar + = (stdabbrrp ? stdabbrrp->r_abbrvar : ""); + dstrp = &dstr; + stdrp = &stdr; + } + } + if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) + return -1; + abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; + doabbr(result, zp->z_format, abbrvar, false, true); + if (stringoffset(end(result), -zp->z_gmtoff) != 0) { + result[0] = '\0'; + return -1; + } + if (dstrp == NULL) + return compat; + doabbr(end(result), zp->z_format, dstrp->r_abbrvar, true, true); + if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR) + if (stringoffset(end(result), + -(zp->z_gmtoff + dstrp->r_stdoff)) != 0) { + result[0] = '\0'; + return -1; + } + (void) strcat(result, ","); + c = stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff); + if (c < 0) { + result[0] = '\0'; + return -1; + } + if (compat < c) + compat = c; + (void) strcat(result, ","); + c = stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff); + if (c < 0) { + result[0] = '\0'; + return -1; + } + if (compat < c) + compat = c; + return compat; +} + +static void +outzone(const struct zone * const zpfirst, const int zonecount) +{ + register const struct zone * zp; + register struct rule * rp; + register int i, j; + register int usestart, useuntil; + register zic_t starttime, untiltime; + register zic_t gmtoff; + register zic_t stdoff; + register zic_t year; + register zic_t startoff; + register int startttisstd; + register int startttisgmt; + register int type; + register char * startbuf; + register char * ab; + register char * envvar; + register int max_abbr_len; + register int max_envvar_len; + register int prodstic; /* all rules are min to max */ + register int compat; + register int do_extend; + register char version; +#ifdef ICU + int finalRuleYear, finalRuleIndex; + const struct rule* finalRule1; + const struct rule* finalRule2; +#endif + + max_abbr_len = 2 + max_format_len + max_abbrvar_len; + max_envvar_len = 2 * max_abbr_len + 5 * 9; + startbuf = emalloc(max_abbr_len + 1); + ab = emalloc(max_abbr_len + 1); + envvar = emalloc(max_envvar_len + 1); + INITIALIZE(untiltime); + INITIALIZE(starttime); + /* + ** Now. . .finally. . .generate some useful data! + */ + timecnt = 0; + typecnt = 0; + charcnt = 0; + prodstic = zonecount == 1; + /* + ** Thanks to Earl Chew + ** for noting the need to unconditionally initialize startttisstd. + */ + startttisstd = false; + startttisgmt = false; + min_year = max_year = EPOCH_YEAR; + if (leapseen) { + updateminmax(leapminyear); + updateminmax(leapmaxyear + (leapmaxyear < ZIC_MAX)); + } + /* + ** Reserve type 0. + */ + gmtoffs[0] = isdsts[0] = ttisstds[0] = ttisgmts[0] = abbrinds[0] = -1; + typecnt = 1; + for (i = 0; i < zonecount; ++i) { + zp = &zpfirst[i]; + if (i < zonecount - 1) + updateminmax(zp->z_untilrule.r_loyear); + for (j = 0; j < zp->z_nrules; ++j) { + rp = &zp->z_rules[j]; + if (rp->r_lowasnum) + updateminmax(rp->r_loyear); + if (rp->r_hiwasnum) + updateminmax(rp->r_hiyear); + if (rp->r_lowasnum || rp->r_hiwasnum) + prodstic = false; + } + } + /* + ** Generate lots of data if a rule can't cover all future times. + */ + compat = stringzone(envvar, zpfirst, zonecount); + version = compat < 2013 ? ZIC_VERSION_PRE_2013 : ZIC_VERSION; + do_extend = compat < 0 || compat == YEAR_BY_YEAR_ZONE; +#ifdef ICU + do_extend = 0; +#endif + if (noise) { + if (!*envvar) + warning("%s %s", + _("no POSIX environment variable for zone"), + zpfirst->z_name); + else if (compat != 0 && compat != YEAR_BY_YEAR_ZONE) { + /* Circa-COMPAT clients, and earlier clients, might + not work for this zone when given dates before + 1970 or after 2038. */ + warning(_("%s: pre-%d clients may mishandle" + " distant timestamps"), + zpfirst->z_name, compat); + } + } + if (do_extend) { + /* + ** Search through a couple of extra years past the obvious + ** 400, to avoid edge cases. For example, suppose a non-POSIX + ** rule applies from 2012 onwards and has transitions in March + ** and September, plus some one-off transitions in November + ** 2013. If zic looked only at the last 400 years, it would + ** set max_year=2413, with the intent that the 400 years 2014 + ** through 2413 will be repeated. The last transition listed + ** in the tzfile would be in 2413-09, less than 400 years + ** after the last one-off transition in 2013-11. Two years + ** might be overkill, but with the kind of edge cases + ** available we're not sure that one year would suffice. + */ + enum { years_of_observations = YEARSPERREPEAT + 2 }; + + if (min_year >= ZIC_MIN + years_of_observations) + min_year -= years_of_observations; + else min_year = ZIC_MIN; + if (max_year <= ZIC_MAX - years_of_observations) + max_year += years_of_observations; + else max_year = ZIC_MAX; + /* + ** Regardless of any of the above, + ** for a "proDSTic" zone which specifies that its rules + ** always have and always will be in effect, + ** we only need one cycle to define the zone. + */ + if (prodstic) { + min_year = 1900; + max_year = min_year + years_of_observations; + } + } + /* + ** For the benefit of older systems, + ** generate data from 1900 through 2037. + */ + if (min_year > 1900) + min_year = 1900; + if (max_year < 2037) + max_year = 2037; + for (i = 0; i < zonecount; ++i) { + /* + ** A guess that may well be corrected later. + */ + stdoff = 0; + zp = &zpfirst[i]; + usestart = i > 0 && (zp - 1)->z_untiltime > min_time; + useuntil = i < (zonecount - 1); + if (useuntil && zp->z_untiltime <= min_time) + continue; + gmtoff = zp->z_gmtoff; + eat(zp->z_filename, zp->z_linenum); + *startbuf = '\0'; + startoff = zp->z_gmtoff; +#ifdef ICU + finalRuleYear = finalRuleIndex = -1; + finalRule1 = finalRule2 = NULL; + if (i == (zonecount - 1)) { /* !useuntil */ + /* Look for exactly 2 rules that end at 'max' and + * note them. Determine max(r_loyear) for the 2 of + * them. */ + for (j=0; jz_nrules; ++j) { + rp = &zp->z_rules[j]; + if (rp->r_hiyear == ZIC_MAX) { + if (rp->r_loyear > finalRuleYear) { + finalRuleYear = rp->r_loyear; + } + if (finalRule1 == NULL) { + finalRule1 = rp; + } else if (finalRule2 == NULL) { + finalRule2 = rp; + } else { + error("more than two max rules found (ICU)"); + exit(EXIT_FAILURE); + } + } else if (rp->r_hiyear >= finalRuleYear) { + /* There might be an overriding non-max rule + * to be applied to a specific year after one of + * max rule's start year. For example, + * + * Rule Foo 2010 max ... + * Rule Foo 2015 only ... + * + * In this case, we need to change the start year of + * the final (max) rules to the next year. */ + finalRuleYear = rp->r_hiyear + 1; + + /* When above adjustment is done, max_year might need + * to be adjusted, so the final rule will be properly + * evaluated and emitted by the later code block. + * + * Note: This may push the start year of the final + * rules ahead by 1 year unnecessarily. For example, + * If there are two rules, non-max rule and max rule + * starting in the same year, such as + * + * Rule Foo 2010 only .... + * Rule Foo 2010 max .... + * + * In this case, the final (max) rule actually starts + * in 2010, instead of 2010. We could make this tool + * more intelligent to detect such situation. But pushing + * final rule start year to 1 year ahead (in the worst case) + * will just populate a few extra transitions, and it still + * works fine. So for now, we're not trying to put additional + * logic to optimize the case. + */ + if (max_year < finalRuleYear) { + max_year = finalRuleYear; + } + } + } + if (finalRule1 != NULL) { + if (finalRule2 == NULL) { + warning("only one max rule found (ICU)"); + finalRuleYear = finalRuleIndex = -1; + finalRule1 = NULL; + } else { + if (finalRule1->r_stdoff == finalRule2->r_stdoff) { + /* America/Resolute in 2009a uses a pair of rules + * which does not change the offset. ICU ignores + * such rules without actual time transitions. */ + finalRuleYear = finalRuleIndex = -1; + finalRule1 = finalRule2 = NULL; + } else { + /* Swap if necessary so finalRule1 occurs before + * finalRule2 */ + if (finalRule1->r_month > finalRule2->r_month) { + const struct rule* t = finalRule1; + finalRule1 = finalRule2; + finalRule2 = t; + } + /* Add final rule to our list */ + finalRuleIndex = add_icu_final_rules(finalRule1, finalRule2); + } + } + } + } +#endif + + if (zp->z_nrules == 0) { + stdoff = zp->z_stdoff; + doabbr(startbuf, zp->z_format, + NULL, stdoff != 0, false); + type = addtype(oadd(zp->z_gmtoff, stdoff), +#ifdef ICU + zp->z_gmtoff, stdoff, +#endif + startbuf, stdoff != 0, startttisstd, + startttisgmt); + if (usestart) { + addtt(starttime, type); + usestart = false; + } else if (stdoff != 0) + addtt(min_time, type); + } else for (year = min_year; year <= max_year; ++year) { + if (useuntil && year > zp->z_untilrule.r_hiyear) + break; + /* + ** Mark which rules to do in the current year. + ** For those to do, calculate rpytime(rp, year); + */ + for (j = 0; j < zp->z_nrules; ++j) { + rp = &zp->z_rules[j]; + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + rp->r_todo = year >= rp->r_loyear && + year <= rp->r_hiyear && + yearistype(year, rp->r_yrtype); + if (rp->r_todo) + rp->r_temp = rpytime(rp, year); + } + for ( ; ; ) { + register int k; + register zic_t jtime, ktime; + register zic_t offset; + + INITIALIZE(ktime); + if (useuntil) { + /* + ** Turn untiltime into UT + ** assuming the current gmtoff and + ** stdoff values. + */ + untiltime = zp->z_untiltime; + if (!zp->z_untilrule.r_todisgmt) + untiltime = tadd(untiltime, + -gmtoff); + if (!zp->z_untilrule.r_todisstd) + untiltime = tadd(untiltime, + -stdoff); + } + /* + ** Find the rule (of those to do, if any) + ** that takes effect earliest in the year. + */ + k = -1; + for (j = 0; j < zp->z_nrules; ++j) { + rp = &zp->z_rules[j]; + if (!rp->r_todo) + continue; + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + offset = rp->r_todisgmt ? 0 : gmtoff; + if (!rp->r_todisstd) + offset = oadd(offset, stdoff); + jtime = rp->r_temp; + if (jtime == min_time || + jtime == max_time) + continue; + jtime = tadd(jtime, -offset); + if (k < 0 || jtime < ktime) { + k = j; + ktime = jtime; + } + } + if (k < 0) + break; /* go on to next year */ + rp = &zp->z_rules[k]; + rp->r_todo = false; + if (useuntil && ktime >= untiltime) + break; + stdoff = rp->r_stdoff; + if (usestart && ktime == starttime) + usestart = false; + if (usestart) { + if (ktime < starttime) { + startoff = oadd(zp->z_gmtoff, + stdoff); + doabbr(startbuf, zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != 0, + false); + continue; + } + if (*startbuf == '\0' && + startoff == oadd(zp->z_gmtoff, + stdoff)) { + doabbr(startbuf, + zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != + 0, + false); + } + } +#ifdef ICU + if (year >= finalRuleYear && rp == finalRule1) { + /* We want to shift final year 1 year after + * the actual final rule takes effect (year + 1), + * because the previous type is valid until the first + * transition defined by the final rule. Otherwise + * we may see unexpected offset shift at the + * beginning of the year when the final rule takes + * effect. + * + * Note: This may results some 64bit second transitions + * at the very end (year 2038). ICU 4.2 or older releases + * cannot handle 64bit second transitions and they are + * dropped from zoneinfo.txt. */ + emit_icu_zone(icuFile, + zpfirst->z_name, zp->z_gmtoff, + rp, finalRuleIndex, year + 1); + /* only emit this for the first year */ + finalRule1 = NULL; + } +#endif + eats(zp->z_filename, zp->z_linenum, + rp->r_filename, rp->r_linenum); + doabbr(ab, zp->z_format, rp->r_abbrvar, + rp->r_stdoff != 0, false); + offset = oadd(zp->z_gmtoff, rp->r_stdoff); +#ifdef ICU + type = addtype(offset, zp->z_gmtoff, rp->r_stdoff, + ab, rp->r_stdoff != 0, + rp->r_todisstd, rp->r_todisgmt); +#else + type = addtype(offset, ab, rp->r_stdoff != 0, + rp->r_todisstd, rp->r_todisgmt); +#endif + addtt(ktime, type); + } + } + if (usestart) { + if (*startbuf == '\0' && + zp->z_format != NULL && + strchr(zp->z_format, '%') == NULL && + strchr(zp->z_format, '/') == NULL) + (void) strcpy(startbuf, zp->z_format); + eat(zp->z_filename, zp->z_linenum); + if (*startbuf == '\0') +error(_("can't determine time zone abbreviation to use just after until time")); + else addtt(starttime, +#ifdef ICU + addtype(startoff, + zp->z_gmtoff, startoff - zp->z_gmtoff, + startbuf, + startoff != zp->z_gmtoff, + startttisstd, + startttisgmt)); +#else + addtype(startoff, startbuf, + startoff != zp->z_gmtoff, + startttisstd, + startttisgmt)); +#endif + } + /* + ** Now we may get to set starttime for the next zone line. + */ + if (useuntil) { + startttisstd = zp->z_untilrule.r_todisstd; + startttisgmt = zp->z_untilrule.r_todisgmt; + starttime = zp->z_untiltime; + if (!startttisstd) + starttime = tadd(starttime, -stdoff); + if (!startttisgmt) + starttime = tadd(starttime, -gmtoff); + } + } + if (do_extend) { + /* + ** If we're extending the explicitly listed observations + ** for 400 years because we can't fill the POSIX-TZ field, + ** check whether we actually ended up explicitly listing + ** observations through that period. If there aren't any + ** near the end of the 400-year period, add a redundant + ** one at the end of the final year, to make it clear + ** that we are claiming to have definite knowledge of + ** the lack of transitions up to that point. + */ + struct rule xr; + struct attype *lastat; + xr.r_month = TM_JANUARY; + xr.r_dycode = DC_DOM; + xr.r_dayofmonth = 1; + xr.r_tod = 0; + for (lastat = &attypes[0], i = 1; i < timecnt; i++) + if (attypes[i].at > lastat->at) + lastat = &attypes[i]; + if (lastat->at < rpytime(&xr, max_year - 1)) { + /* + ** Create new type code for the redundant entry, + ** to prevent it being optimised away. + */ + if (typecnt >= TZ_MAX_TYPES) { + error(_("too many local time types")); + exit(EXIT_FAILURE); + } + gmtoffs[typecnt] = gmtoffs[lastat->type]; + isdsts[typecnt] = isdsts[lastat->type]; + ttisstds[typecnt] = ttisstds[lastat->type]; + ttisgmts[typecnt] = ttisgmts[lastat->type]; + abbrinds[typecnt] = abbrinds[lastat->type]; + ++typecnt; + addtt(rpytime(&xr, max_year + 1), typecnt-1); + } + } + writezone(zpfirst->z_name, envvar, version); + free(startbuf); + free(ab); + free(envvar); +} + +static void +addtt(const zic_t starttime, int type) +{ + if (starttime <= min_time || + (timecnt == 1 && attypes[0].at < min_time)) { + gmtoffs[0] = gmtoffs[type]; +#ifdef ICU + rawoffs[0] = rawoffs[type]; + dstoffs[0] = dstoffs[type]; +#endif + isdsts[0] = isdsts[type]; + ttisstds[0] = ttisstds[type]; + ttisgmts[0] = ttisgmts[type]; + if (abbrinds[type] != 0) + (void) strcpy(chars, &chars[abbrinds[type]]); + abbrinds[0] = 0; + charcnt = strlen(chars) + 1; + typecnt = 1; + timecnt = 0; + type = 0; + } + attypes = growalloc(attypes, sizeof *attypes, timecnt, &timecnt_alloc); + attypes[timecnt].at = starttime; + attypes[timecnt].type = type; + ++timecnt; +} + +static int +#ifdef ICU +addtype(const zic_t gmtoff, const zic_t rawoff, const zic_t dstoff, char *const abbr, const int isdst, + const int ttisstd, const int ttisgmt) +#else +addtype(const zic_t gmtoff, const char *const abbr, const int isdst, + const int ttisstd, const int ttisgmt) +#endif +{ + register int i, j; + + if (isdst != true && isdst != false) { + error(_("internal error - addtype called with bad isdst")); + exit(EXIT_FAILURE); + } + if (ttisstd != true && ttisstd != false) { + error(_("internal error - addtype called with bad ttisstd")); + exit(EXIT_FAILURE); + } + if (ttisgmt != true && ttisgmt != false) { + error(_("internal error - addtype called with bad ttisgmt")); + exit(EXIT_FAILURE); + } +#ifdef ICU + if (isdst != (dstoff != 0)) { + error(_("internal error - addtype called with bad isdst/dstoff")); + exit(EXIT_FAILURE); + } + if (gmtoff != (rawoff + dstoff)) { + error(_("internal error - addtype called with bad gmt/raw/dstoff")); + exit(EXIT_FAILURE); + } +#endif + /* + ** See if there's already an entry for this zone type. + ** If so, just return its index. + */ + for (i = 0; i < typecnt; ++i) { + if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && +#ifdef ICU + rawoff == rawoffs[i] && dstoff == dstoffs[i] && +#endif + strcmp(abbr, &chars[abbrinds[i]]) == 0 && + ttisstd == ttisstds[i] && + ttisgmt == ttisgmts[i]) + return i; + } + /* + ** There isn't one; add a new one, unless there are already too + ** many. + */ + if (typecnt >= TZ_MAX_TYPES) { + error(_("too many local time types")); + exit(EXIT_FAILURE); + } + if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) { + error(_("UT offset out of range")); + exit(EXIT_FAILURE); + } + gmtoffs[i] = gmtoff; +#ifdef ICU + rawoffs[i] = rawoff; + dstoffs[i] = dstoff; +#endif + isdsts[i] = isdst; + ttisstds[i] = ttisstd; + ttisgmts[i] = ttisgmt; + + for (j = 0; j < charcnt; ++j) + if (strcmp(&chars[j], abbr) == 0) + break; + if (j == charcnt) + newabbr(abbr); + abbrinds[i] = j; + ++typecnt; + return i; +} + +static void +leapadd(const zic_t t, const int positive, const int rolling, int count) +{ + register int i, j; + + if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { + error(_("too many leap seconds")); + exit(EXIT_FAILURE); + } + for (i = 0; i < leapcnt; ++i) + if (t <= trans[i]) { + if (t == trans[i]) { + error(_("repeated leap second moment")); + exit(EXIT_FAILURE); + } + break; + } + do { + for (j = leapcnt; j > i; --j) { + trans[j] = trans[j - 1]; + corr[j] = corr[j - 1]; + roll[j] = roll[j - 1]; + } + trans[i] = t; + corr[i] = positive ? 1 : -count; + roll[i] = rolling; + ++leapcnt; + } while (positive && --count != 0); +} + +static void +adjleap(void) +{ + register int i; + register zic_t last = 0; + + /* + ** propagate leap seconds forward + */ + for (i = 0; i < leapcnt; ++i) { + trans[i] = tadd(trans[i], last); + last = corr[i] += last; + } +} + +static int +yearistype(const int year, const char *const type) +{ + static char * buf; + int result; + + if (type == NULL || *type == '\0') + return true; + buf = erealloc(buf, 132 + strlen(yitcommand) + strlen(type)); + (void) sprintf(buf, "%s %d %s", yitcommand, year, type); + result = system(buf); + if (WIFEXITED(result)) switch (WEXITSTATUS(result)) { + case 0: + return true; + case 1: + return false; + } + error(_("Wild result from command execution")); + (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), + progname, buf, result); + for ( ; ; ) + exit(EXIT_FAILURE); +} + +static int +lowerit(int a) +{ + a = (unsigned char) a; + return (isascii(a) && isupper(a)) ? tolower(a) : a; +} + +/* case-insensitive equality */ +static ATTRIBUTE_PURE int +ciequal(register const char *ap, register const char *bp) +{ + while (lowerit(*ap) == lowerit(*bp++)) + if (*ap++ == '\0') + return true; + return false; +} + +static ATTRIBUTE_PURE int +itsabbr(register const char *abbr, register const char *word) +{ + if (lowerit(*abbr) != lowerit(*word)) + return false; + ++word; + while (*++abbr != '\0') + do { + if (*word == '\0') + return false; + } while (lowerit(*word++) != lowerit(*abbr)); + return true; +} + +static ATTRIBUTE_PURE const struct lookup * +byword(register const char *const word, + register const struct lookup *const table) +{ + register const struct lookup * foundlp; + register const struct lookup * lp; + + if (word == NULL || table == NULL) + return NULL; + /* + ** Look for exact match. + */ + for (lp = table; lp->l_word != NULL; ++lp) + if (ciequal(word, lp->l_word)) + return lp; + /* + ** Look for inexact match. + */ + foundlp = NULL; + for (lp = table; lp->l_word != NULL; ++lp) + if (itsabbr(word, lp->l_word)) { + if (foundlp == NULL) + foundlp = lp; + else return NULL; /* multiple inexact matches */ + } + return foundlp; +} + +static char ** +getfields(register char *cp) +{ + register char * dp; + register char ** array; + register int nsubs; + + if (cp == NULL) + return NULL; + array = emalloc(size_product(strlen(cp) + 1, sizeof *array)); + nsubs = 0; + for ( ; ; ) { + while (isascii((unsigned char) *cp) && + isspace((unsigned char) *cp)) + ++cp; + if (*cp == '\0' || *cp == '#') + break; + array[nsubs++] = dp = cp; + do { + if ((*dp = *cp++) != '"') + ++dp; + else while ((*dp = *cp++) != '"') + if (*dp != '\0') + ++dp; + else { + error(_( + "Odd number of quotation marks" + )); + exit(1); + } + } while (*cp != '\0' && *cp != '#' && + (!isascii(*cp) || !isspace((unsigned char) *cp))); + if (isascii(*cp) && isspace((unsigned char) *cp)) + ++cp; + *dp = '\0'; + } + array[nsubs] = NULL; + return array; +} + +static ATTRIBUTE_PURE zic_t +oadd(const zic_t t1, const zic_t t2) +{ + if (t1 < 0 ? t2 < ZIC_MIN - t1 : ZIC_MAX - t1 < t2) { + error(_("time overflow")); + exit(EXIT_FAILURE); + } + return t1 + t2; +} + +static ATTRIBUTE_PURE zic_t +tadd(const zic_t t1, const zic_t t2) +{ + if (t1 == max_time && t2 > 0) + return max_time; + if (t1 == min_time && t2 < 0) + return min_time; + if (t1 < 0 ? t2 < min_time - t1 : max_time - t1 < t2) { + error(_("time overflow")); + exit(EXIT_FAILURE); + } + return t1 + t2; +} + +/* +** Given a rule, and a year, compute the date - in seconds since January 1, +** 1970, 00:00 LOCAL time - in that year that the rule refers to. +*/ + +static zic_t +rpytime(register const struct rule *const rp, register const zic_t wantedy) +{ + register int m, i; + register zic_t dayoff; /* with a nod to Margaret O. */ + register zic_t t, y; + + if (wantedy == ZIC_MIN) + return min_time; + if (wantedy == ZIC_MAX) + return max_time; + dayoff = 0; + m = TM_JANUARY; + y = EPOCH_YEAR; + while (wantedy != y) { + if (wantedy > y) { + i = len_years[isleap(y)]; + ++y; + } else { + --y; + i = -len_years[isleap(y)]; + } + dayoff = oadd(dayoff, i); + } + while (m != rp->r_month) { + i = len_months[isleap(y)][m]; + dayoff = oadd(dayoff, i); + ++m; + } + i = rp->r_dayofmonth; + if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { + if (rp->r_dycode == DC_DOWLEQ) + --i; + else { + error(_("use of 2/29 in non leap-year")); + exit(EXIT_FAILURE); + } + } + --i; + dayoff = oadd(dayoff, i); + if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { + register zic_t wday; + +#define LDAYSPERWEEK ((zic_t) DAYSPERWEEK) + wday = EPOCH_WDAY; + /* + ** Don't trust mod of negative numbers. + */ + if (dayoff >= 0) + wday = (wday + dayoff) % LDAYSPERWEEK; + else { + wday -= ((-dayoff) % LDAYSPERWEEK); + if (wday < 0) + wday += LDAYSPERWEEK; + } + while (wday != rp->r_wday) + if (rp->r_dycode == DC_DOWGEQ) { + dayoff = oadd(dayoff, 1); + if (++wday >= LDAYSPERWEEK) + wday = 0; + ++i; + } else { + dayoff = oadd(dayoff, -1); + if (--wday < 0) + wday = LDAYSPERWEEK - 1; + --i; + } + if (i < 0 || i >= len_months[isleap(y)][m]) { + if (noise) + warning(_("rule goes past start/end of month--\ +will not work with pre-2004 versions of zic")); + } + } + if (dayoff < min_time / SECSPERDAY) + return min_time; + if (dayoff > max_time / SECSPERDAY) + return max_time; + t = (zic_t) dayoff * SECSPERDAY; + return tadd(t, rp->r_tod); +} + +static void +newabbr(const char *const string) +{ + register int i; + + if (strcmp(string, GRANDPARENTED) != 0) { + register const char * cp; + const char * mp; + + /* + ** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics + ** optionally followed by a + or - and a number from 1 to 14. + */ + cp = string; + mp = NULL; + while (isascii((unsigned char) *cp) && + isalpha((unsigned char) *cp)) + ++cp; + if (cp - string == 0) +mp = _("time zone abbreviation lacks alphabetic at start"); + if (noise && cp - string < 3) +mp = _("time zone abbreviation has fewer than 3 alphabetics"); + if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN) +mp = _("time zone abbreviation has too many alphabetics"); + if (mp == NULL && (*cp == '+' || *cp == '-')) { + ++cp; + if (isascii((unsigned char) *cp) && + isdigit((unsigned char) *cp)) + if (*cp++ == '1' && + *cp >= '0' && *cp <= '4') + ++cp; + } + if (*cp != '\0') +mp = _("time zone abbreviation differs from POSIX standard"); + if (mp != NULL) + warning("%s (%s)", mp, string); + } + i = strlen(string) + 1; + if (charcnt + i > TZ_MAX_CHARS) { + error(_("too many, or too long, time zone abbreviations")); + exit(EXIT_FAILURE); + } + (void) strcpy(&chars[charcnt], string); + charcnt += i; +} + +static int +mkdirs(char *argname) +{ + register char * name; + register char * cp; + + if (argname == NULL || *argname == '\0') + return 0; + cp = name = ecpyalloc(argname); + while ((cp = strchr(cp + 1, '/')) != 0) { + *cp = '\0'; +#ifdef HAVE_DOS_FILE_NAMES + /* + ** DOS drive specifier? + */ + if (isalpha((unsigned char) name[0]) && + name[1] == ':' && name[2] == '\0') { + *cp = '/'; + continue; + } +#endif + if (!itsdir(name)) { + /* + ** It doesn't seem to exist, so we try to create it. + ** Creation may fail because of the directory being + ** created by some other multiprocessor, so we get + ** to do extra checking. + */ + if (mkdir(name, MKDIR_UMASK) != 0) { + const char *e = strerror(errno); + + if (errno != EEXIST || !itsdir(name)) { + (void) fprintf(stderr, +_("%s: Can't create directory %s: %s\n"), + progname, name, e); + free(name); + return -1; + } + } + } + *cp = '/'; + } + free(name); + return 0; +} + +/* +** UNIX was a registered trademark of The Open Group in 2003. +*/ -- cgit v1.2.3