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-rw-r--r--intl/icu/source/tools/tzcode/zic.c3156
1 files changed, 3156 insertions, 0 deletions
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 <stdarg.h>
+#include <stdbool.h>
+
+#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; i<finalRulesCount; ++i) { /* i+=2 should work too */
+ if (r1==finalRules[i]) return i; /* [sic] pointer comparison */
+ }
+
+ finalRules = (const struct rule**) (void*) erealloc((char *) finalRules,
+ (finalRulesCount + 2) * sizeof(*finalRules));
+ finalRules[finalRulesCount++] = r1;
+ finalRules[finalRulesCount++] = r2;
+ return finalRulesCount - 2;
+}
+#endif
+
+static const char * psxrules;
+static const char * lcltime;
+static const char * directory;
+static const char * leapsec;
+static const char * yitcommand;
+
+int
+main(int argc, char **argv)
+{
+ register int i;
+ register int j;
+ register int c;
+
+#ifdef S_IWGRP
+ (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
+#endif
+#if HAVE_GETTEXT
+ (void) setlocale(LC_ALL, "");
+#ifdef TZ_DOMAINDIR
+ (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
+#endif /* defined TEXTDOMAINDIR */
+ (void) textdomain(TZ_DOMAIN);
+#endif /* HAVE_GETTEXT */
+ progname = argv[0];
+ if (TYPE_BIT(zic_t) < 64) {
+ (void) fprintf(stderr, "%s: %s\n", progname,
+ _("wild compilation-time specification of zic_t"));
+ exit(EXIT_FAILURE);
+ }
+ for (i = 1; i < argc; ++i)
+ if (strcmp(argv[i], "--version") == 0) {
+ (void) printf("zic %s%s\n", PKGVERSION, TZVERSION);
+ exit(EXIT_SUCCESS);
+ } else if (strcmp(argv[i], "--help") == 0) {
+ usage(stdout, EXIT_SUCCESS);
+ }
+ while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
+ switch (c) {
+ default:
+ usage(stderr, EXIT_FAILURE);
+ case 'd':
+ if (directory == NULL)
+ directory = optarg;
+ else {
+ (void) fprintf(stderr,
+_("%s: More than one -d option specified\n"),
+ progname);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'l':
+ if (lcltime == NULL)
+ lcltime = optarg;
+ else {
+ (void) fprintf(stderr,
+_("%s: More than one -l option specified\n"),
+ progname);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'p':
+ if (psxrules == NULL)
+ psxrules = optarg;
+ else {
+ (void) fprintf(stderr,
+_("%s: More than one -p option specified\n"),
+ progname);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'y':
+ if (yitcommand == NULL)
+ yitcommand = optarg;
+ else {
+ (void) fprintf(stderr,
+_("%s: More than one -y option specified\n"),
+ progname);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'L':
+ if (leapsec == NULL)
+ leapsec = optarg;
+ else {
+ (void) fprintf(stderr,
+_("%s: More than one -L option specified\n"),
+ progname);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'v':
+ noise = true;
+ break;
+ case 's':
+ (void) printf("%s: -s ignored\n", progname);
+ break;
+ }
+ if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
+ usage(stderr, EXIT_FAILURE); /* usage message by request */
+ if (directory == NULL)
+ directory = TZDIR;
+ if (yitcommand == NULL)
+ yitcommand = "yearistype";
+
+ if (optind < argc && leapsec != NULL) {
+ infile(leapsec);
+ adjleap();
+ }
+
+#ifdef ICU
+ if ((icuFile = fopen(ICU_ZONE_FILE, "w")) == NULL) {
+ const char *e = strerror(errno);
+ (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
+ progname, ICU_ZONE_FILE, e);
+ (void) exit(EXIT_FAILURE);
+ }
+#endif
+ for (i = optind; i < argc; ++i)
+ infile(argv[i]);
+ if (errors)
+ exit(EXIT_FAILURE);
+ associate();
+ for (i = 0; i < nzones; i = j) {
+ /*
+ ** Find the next non-continuation zone entry.
+ */
+ for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
+ continue;
+ outzone(&zones[i], j - i);
+ }
+ /*
+ ** Make links.
+ */
+ for (i = 0; i < nlinks; ++i) {
+ eat(links[i].l_filename, links[i].l_linenum);
+ dolink(links[i].l_from, links[i].l_to);
+#ifdef ICU
+ emit_icu_link(icuFile, links[i].l_from, links[i].l_to);
+#endif
+ if (noise)
+ for (j = 0; j < nlinks; ++j)
+ if (strcmp(links[i].l_to,
+ links[j].l_from) == 0)
+ warning(_("link to link"));
+ }
+ if (lcltime != NULL) {
+ eat("command line", 1);
+ dolink(lcltime, TZDEFAULT);
+ }
+ if (psxrules != NULL) {
+ eat("command line", 1);
+ dolink(psxrules, TZDEFRULES);
+ }
+#ifdef ICU
+ for (i=0; i<finalRulesCount; ++i) {
+ emit_icu_rule(icuFile, finalRules[i], i);
+ }
+#endif /*ICU*/
+ return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static void
+dolink(const char *const fromfield, const char *const tofield)
+{
+ register char * fromname;
+ register char * toname;
+
+ if (fromfield[0] == '/')
+ fromname = ecpyalloc(fromfield);
+ else {
+ fromname = ecpyalloc(directory);
+ fromname = ecatalloc(fromname, "/");
+ fromname = ecatalloc(fromname, fromfield);
+ }
+ if (tofield[0] == '/')
+ toname = ecpyalloc(tofield);
+ else {
+ toname = ecpyalloc(directory);
+ toname = ecatalloc(toname, "/");
+ toname = ecatalloc(toname, tofield);
+ }
+ /*
+ ** We get to be careful here since
+ ** there's a fair chance of root running us.
+ */
+ if (!itsdir(toname))
+ (void) remove(toname);
+ if (link(fromname, toname) != 0
+ && access(fromname, F_OK) == 0 && !itsdir(fromname)) {
+ int result;
+
+ if (mkdirs(toname) != 0)
+ exit(EXIT_FAILURE);
+
+ result = link(fromname, toname);
+ if (result != 0) {
+ const char *s = fromfield;
+ const char *t;
+ register char * symlinkcontents = NULL;
+
+ do
+ t = s;
+ while ((s = strchr(s, '/'))
+ && ! strncmp (fromfield, tofield,
+ ++s - fromfield));
+
+ for (s = tofield + (t - fromfield);
+ (s = strchr(s, '/'));
+ s++)
+ symlinkcontents =
+ ecatalloc(symlinkcontents,
+ "../");
+ symlinkcontents = ecatalloc(symlinkcontents, t);
+ result = symlink(symlinkcontents, toname);
+ if (result == 0)
+warning(_("hard link failed, symbolic link used"));
+ free(symlinkcontents);
+ }
+ if (result != 0) {
+ FILE *fp, *tp;
+ int c;
+ fp = fopen(fromname, "rb");
+ if (!fp) {
+ const char *e = strerror(errno);
+ (void) fprintf(stderr,
+ _("%s: Can't read %s: %s\n"),
+ progname, fromname, e);
+ exit(EXIT_FAILURE);
+ }
+ tp = fopen(toname, "wb");
+ if (!tp) {
+ const char *e = strerror(errno);
+ (void) fprintf(stderr,
+ _("%s: Can't create %s: %s\n"),
+ progname, toname, e);
+ exit(EXIT_FAILURE);
+ }
+ while ((c = getc(fp)) != EOF)
+ putc(c, tp);
+ if (ferror(fp) || fclose(fp)) {
+ (void) fprintf(stderr,
+ _("%s: Error reading %s\n"),
+ progname, fromname);
+ exit(EXIT_FAILURE);
+ }
+ if (ferror(tp) || fclose(tp)) {
+ (void) fprintf(stderr,
+ _("%s: Error writing %s\n"),
+ progname, toname);
+ exit(EXIT_FAILURE);
+ }
+ warning(_("link failed, copy used"));
+#ifndef ICU_LINKS
+ exit(EXIT_FAILURE);
+#endif
+ }
+ }
+ free(fromname);
+ free(toname);
+}
+
+#define TIME_T_BITS_IN_FILE 64
+
+static const zic_t min_time = (zic_t) -1 << (TIME_T_BITS_IN_FILE - 1);
+static const zic_t max_time = -1 - ((zic_t) -1 << (TIME_T_BITS_IN_FILE - 1));
+
+static int
+itsdir(const char *const name)
+{
+ register char * myname;
+ register int accres;
+
+ myname = ecpyalloc(name);
+ myname = ecatalloc(myname, "/.");
+ accres = access(myname, F_OK);
+ free(myname);
+ return accres == 0;
+}
+
+/*
+** Associate sets of rules with zones.
+*/
+
+/*
+** Sort by rule name.
+*/
+
+static int
+rcomp(const void *cp1, const void *cp2)
+{
+ return strcmp(((const struct rule *) cp1)->r_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; j<zp->z_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.
+*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 14:51:22 +0000