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- Subject: v14i031: Public time (zone) conversion routines, Part02/03
- Newsgroups: comp.sources.unix
- Sender: sources
- Approved: rsalz@uunet.UU.NET
-
- Submitted-by: Arthur David Olson <elsie!ado>
- Posting-number: Volume 14, Issue 31
- Archive-name: localtime3/part02
-
- : To unbundle, sh this file
- echo 'tzfile.h' 1>&2
- cat >'tzfile.h' <<'End of tzfile.h'
- #ifndef lint
- #ifndef NOID
- #ifndef TZFILE_H
- #define TZFILE_H
- static char tzfilehid[] = "@(#)tzfile.h 4.1";
- #endif /* !defined TZFILE_H */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*
- ** Information about time zone files.
- */
-
- #ifndef TZDIR
- #define TZDIR "/etc/zoneinfo" /* Time zone object file directory */
- #endif /* !defined TZDIR */
-
- #ifndef TZDEFAULT
- #define TZDEFAULT "localtime"
- #endif /* !defined TZDEFAULT */
-
- /*
- ** Each file begins with. . .
- */
-
- struct tzhead {
- char tzh_reserved[28]; /* reserved for future use */
- char tzh_leapcnt[4]; /* coded number of leap seconds */
- char tzh_timecnt[4]; /* coded number of transition times */
- char tzh_typecnt[4]; /* coded number of local time types */
- char tzh_charcnt[4]; /* coded number of abbr. chars */
- };
-
- /*
- ** . . .followed by. . .
- **
- ** tzh_timecnt (char [4])s coded transition times a la time(2)
- ** tzh_timecnt (unsigned char)s types of local time starting at above
- ** tzh_typecnt repetitions of
- ** one (char [4]) coded GMT offset in seconds
- ** one (unsigned char) used to set tm_isdt
- ** one (unsigned char) that's an abbreviation list index
- ** tzh_charcnt (char)s '\0'-terminated zone abbreviations
- ** tzh_leapcnt repetitions of
- ** one (char [4]) coded leap second transition times
- ** one (char [4]) total correction after above
- */
-
- /*
- ** In the current implementation, "tzset()" refuses to deal with files that
- ** exceed any of the limits below.
- */
-
- #ifndef TZ_MAX_TIMES
- /*
- ** The TZ_MAX_TIMES value below is enough to handle a bit more than a
- ** year's worth of solar time (corrected daily to the nearest second) or
- ** 138 years of Pacific Presidential Election time
- ** (where there are three time zone transitions every fourth year).
- */
- #define TZ_MAX_TIMES 370
- #endif /* !defined TZ_MAX_TIMES */
-
- #ifndef TZ_MAX_TYPES
- #ifndef NOSOLAR
- #define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
- #else /* !defined NOSOLAR */
- #define TZ_MAX_TYPES 10 /* Maximum number of local time types */
- #endif /* !defined NOSOLAR */
- #endif /* !defined TZ_MAX_TYPES */
-
- #ifndef TZ_MAX_CHARS
- #define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
- #endif /* !defined TZ_MAX_CHARS */
-
- #ifndef TZ_MAX_LEAPS
- #define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
- #endif /* !defined TZ_MAX_LEAPS */
-
- #define SECSPERMIN 60
- #define MINSPERHOUR 60
- #define HOURSPERDAY 24
- #define DAYSPERWEEK 7
- #define DAYSPERNYEAR 365
- #define DAYSPERLYEAR 366
- #define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
- #define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
- #define MONSPERYEAR 12
-
- #define TM_SUNDAY 0
- #define TM_MONDAY 1
- #define TM_TUESDAY 2
- #define TM_WEDNESDAY 3
- #define TM_THURSDAY 4
- #define TM_FRIDAY 5
- #define TM_SATURDAY 6
-
- #define TM_JANUARY 0
- #define TM_FEBRUARY 1
- #define TM_MARCH 2
- #define TM_APRIL 3
- #define TM_MAY 4
- #define TM_JUNE 5
- #define TM_JULY 6
- #define TM_AUGUST 7
- #define TM_SEPTEMBER 8
- #define TM_OCTOBER 9
- #define TM_NOVEMBER 10
- #define TM_DECEMBER 11
- #define TM_SUNDAY 0
-
- #define TM_YEAR_BASE 1900
-
- #define EPOCH_YEAR 1970
- #define EPOCH_WDAY TM_THURSDAY
-
- /*
- ** Accurate only for the past couple of centuries;
- ** that will probably do.
- */
-
- #define isleap(y) (((y) % 4) == 0 && ((y) % 100) != 0 || ((y) % 400) == 0)
- End of tzfile.h
- echo 'nonstd.h' 1>&2
- cat >'nonstd.h' <<'End of nonstd.h'
- #ifndef NONSTD_H
-
- #define NONSTD_H
-
- #ifndef lint
- #ifndef NOID
- static char nonstdhid[] = "@(#)nonstd.h 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #ifdef __STDC__
-
- #define P(s) s
-
- #ifdef __TURBOC__
- /*
- ** Cover for stupid Turbo C
- */
- #define genericptr_t void *
- #else /* !defined __TURBOC__ */
- typedef void * genericptr_t;
- #endif /* !defined __TURBOC__ */
-
- #define alloc_size_t size_t
- #define qsort_size_t size_t
- #define fread_size_t size_t
- #define fwrite_size_t size_t
-
- #else /* !defined __STDC__ */
-
- #define ASTERISK *
- #define P(s) (/ASTERISK s ASTERISK/)
-
- #ifndef genericptr_t
- typedef char * genericptr_t;
- #endif /* !defined genericptr_t */
-
- #ifndef alloc_size_t
- typedef unsigned alloc_size_t;
- #endif /* !defined alloc_size_t */
-
- #ifndef qsort_size_t
- #ifdef unix
- #include "sys/param.h"
- #endif /* defined unix */
- #ifdef BSD
- typedef int qsort_size_t;
- #else /* !defined BSD */
- typedef unsigned qsort_size_t;
- #endif /* !defined BSD */
- #endif /* !defined qsort_size_t */
-
- #ifndef fread_size_t
- typedef int fread_size_t;
- #endif /* !defined fread_size_t */
-
- #ifndef fwrite_size_t
- typedef int fwrite_size_t;
- #endif /* !defined fwrite_size_t */
-
- #define const
- #define noalias
- #define volatile
-
- #endif /* !defined __STDC__ */
-
- #endif /* !defined NONSTD_H */
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of nonstd.h
- echo 'stdio.h' 1>&2
- cat >'stdio.h' <<'End of stdio.h'
- #ifndef lint
- #ifndef NOID
- #ifndef STDIO_H
- #define STDIO_H
- static char stdiohid[] = "@(#)stdio.h 4.1";
- #endif /* !defined STDIO_H */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #ifdef STDIO_RECURSING
- #include "/usr/include/stdio.h"
- #else /* !defined STDIO_RECURSING */
- #define STDIO_RECURSING
- #include <stdio.h>
- #undef STDIO_RECURSING
- #endif /* !defined STDIO_RECURSING */
-
- #ifndef FILENAME_MAX
-
- #ifndef MAXPATHLEN
- #ifdef unix
- #include <sys/param.h>
- #endif /* defined unix */
- #endif /* !defined MAXPATHLEN */
-
- #ifdef MAXPATHLEN
- #define FILENAME_MAX MAXPATHLEN
- #else /* !defined MAXPATHLEN */
- #define FILENAME_MAX 1024 /* Pure guesswork */
- #endif /* !defined MAXPATHLEN */
-
- #endif /* !defined FILENAME_MAX */
-
- #ifndef __STDC__
- #ifdef unix
-
- #include <sys/param.h>
- #ifndef BSD
- extern void perror();
- #endif /* !defined BSD */
-
- #define remove(name) unlink(name)
-
- #endif /* defined unix */
- #endif /* !defined __STDC__ */
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of stdio.h
- echo 'stdlib.h' 1>&2
- cat >'stdlib.h' <<'End of stdlib.h'
- #ifndef lint
- #ifndef NOID
- #ifndef STDLIB_H
- #define STDLIB_H
- static char stdlibhid[] = "@(#)stdlib.h 4.1";
- #endif /* !defined STDLIB_H */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #ifdef __STDC__
-
- #ifdef STDLIB_RECURSING
- #include "/usr/include/stdlib.h"
- #else /* !defined STDLIB_RECURSING */
- #define STDLIB_RECURSING
- #include <stdlib.h>
- #undef STDLIB_RECURSING
- #endif /* !defined STDLIB_RECURSING */
-
- #ifndef NULL
- /*
- ** Stupid Turbo C doesn't define NULL in stdlib.h
- */
- #include <stdio.h>
- #endif /* !defined NULL */
-
- #else /* !defined __STDC__ */
-
- #ifdef unix
- /*
- ** Include sys/param.h so we can figure out if we're BSD or USG
- */
- #include "sys/param.h"
- #endif /* defined unix */
-
- #ifndef EXIT_SUCCESS
- #define EXIT_SUCCESS 0
- #endif /* !defined EXIT_SUCCESS */
-
- #ifndef EXIT_FAILURE
- #define EXIT_FAILURE 0
- #endif /* !defined EXIT_FAILURE */
-
- #ifndef NULL
- #include <stdio.h>
- #endif /* !defined NULL */
-
- /*
- ** String conversion functions
- */
-
- #include <math.h>
-
- /*
- ** Memory management funcsions
- */
-
- extern char * calloc();
- extern char * malloc();
- extern char * realloc();
-
- #ifndef BSD
- extern void free();
- #endif /* !defined BSD */
-
- /*
- ** Communication with the environment
- */
-
- extern char * getenv();
-
- #ifndef BSD
- extern void exit();
- #endif /* !defined BSD */
-
- /*
- ** Searching and sorting functions
- */
-
- #ifndef BSD
- extern void qsort();
- #endif /* !defined BSD */
-
- #endif /* !defined __STDC__ */
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of stdlib.h
- echo 'time.h' 1>&2
- cat >'time.h' <<'End of time.h'
- #ifndef lint
- #ifndef NOID
- #ifndef TIME_H
- #define TIME_H
- static char timehid[] = "@(#)time.h 4.1";
- #endif /* !defined TIME_H */
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #ifdef TIME_RECURSING
- #include "/usr/include/time.h"
- #else /* !defined TIME_RECURSING */
- #define TIME_RECURSING
- #include <time.h>
- #undef TIME_RECURSING
- #endif /* !defined TIME_RECURSING */
-
- #ifndef __STDC__
-
- #ifndef time_t
- #ifdef unix
- #include <sys/types.h>
- #else /* !defined unix */
- typedef long time_t;
- #endif /* !defined unix */
- #endif /* !defined time_t */
-
- extern time_t time();
-
- #endif /* !defined __STDC__ */
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of time.h
- echo 'zic.c' 1>&2
- cat >'zic.c' <<'End of zic.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)zic.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #include "stdio.h"
- #include "tzfile.h"
- #include "ctype.h"
- #include "time.h"
- #include "string.h"
- #include "stdlib.h"
- #include "sys/stat.h"
- #include "nonstd.h"
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif /* !defined TRUE */
-
- extern int emkdir P((const char * name, int mode));
- extern int getopt P((int argc, char * argv[], const char * options));
- extern char * icatalloc P((char * old, const char * new));
- extern char * icpyalloc P((const char * string));
- extern void ifree P((char * p));
- extern char * imalloc P((int n));
- extern char * irealloc P((char * old, int n));
- extern int link P((const char * fromname, const char * toname));
- extern char * optarg;
- extern int optind;
- extern char * scheck P((const char * string, const char * format));
-
- static void addtt P((time_t starttime, int type));
- static int addtype P((long gmtoff, const char * abbr, int isdst));
- static void addleap P((time_t t, int positive, int rolling));
- static void adjleap P((void));
- static void associate P((void));
- static int ciequal P((const char * ap, const char * bp));
- static void convert P((long val, char * buf));
- static void eat P((const char * name, int num));
- static void eats P((const char * name, int num,
- const char * rname, int rnum));
- static long eitol P((int i));
- static void error P((const char * message));
- static char ** getfields P((char * buf));
- static long gethms P((const char * string, const char * errstrng,
- int signable));
- static void infile P((const char * filename));
- static void inleap P((char ** fields, int nfields));
- static void inlink P((char ** fields, int nfields));
- static void inrule P((char ** fields, int nfiekds));
- static int inzcont P((char ** fields, int nfields));
- static int inzone P((char ** fields, int nfields));
- static int inzsub P((char ** fields, int nfields, int iscont));
- static int itsabbr P((const char * abbr, const char * word));
- static int itsdir P((char * name));
- static int lowerit P((int c));
- static char * memcheck P((char * tocheck));
- static int mkdirs P((char * filename));
- static void newabbr P((const char * abbr));
- static long oadd P((long t1, long t2));
- static void outzone P((const struct zone * zp, int ntzones));
- static void puttzcode P((long code, FILE * fp));
- static int rcomp P((const genericptr_t leftp, const genericptr_t rightp));
- static time_t rpytime P((const struct rule * rp, int wantedy));
- static void rulesub P((struct rule * rp,
- char * loyearp, char * hiyearp, char * typep,
- char * monthp, char * dayp, char * timep));
- static void setboundaries P((void));
- static time_t tadd P((time_t t1, long t2));
- static void usage P((void));
- static void writezone P((const char * name));
- static int yearistype P((int year, const char * type));
-
- static int charcnt;
- static int errors;
- static const char * filename;
- static int leapcnt;
- static int linenum;
- static time_t max_time;
- static int max_year;
- static time_t min_time;
- static int min_year;
- static int noise;
- static const char * rfilename;
- static int rlinenum;
- static const char * progname;
- static int timecnt;
- static int typecnt;
- static int tt_signed;
-
- /*
- ** 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
-
- struct rule {
- const char * r_filename;
- int r_linenum;
- const char * r_name;
-
- int r_loyear; /* for example, 1986 */
- int r_hiyear; /* for example, 1986 */
- const char * r_yrtype;
-
- int r_month; /* 0..11 */
-
- int r_dycode; /* see below */
- int r_dayofmonth;
- int r_wday;
-
- long r_tod; /* time from midnight */
- int r_todisstd; /* above is standard time if TRUE */
- /* or wall clock time if FALSE */
- long r_stdoff; /* offset from standard time */
- const char * r_abbrvar; /* variable part of abbreviation */
-
- int r_todo; /* a rule to do (used in outzone) */
- time_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) */
-
- /*
- ** Year synonyms.
- */
-
- #define YR_MINIMUM 0
- #define YR_MAXIMUM 1
- #define YR_ONLY 2
-
- static struct rule * rules;
- static int nrules; /* number of rules */
-
- struct zone {
- const char * z_filename;
- int z_linenum;
-
- const char * z_name;
- long z_gmtoff;
- const char * z_rule;
- const char * z_format;
-
- long z_stdoff;
-
- struct rule * z_rules;
- int z_nrules;
-
- struct rule z_untilrule;
- time_t z_untiltime;
- };
-
- static struct zone * zones;
- static int nzones; /* number of zones */
-
- struct link {
- const char * l_filename;
- int l_linenum;
- const char * l_from;
- const char * l_to;
- };
-
- static struct link * links;
- static int nlinks;
-
- struct lookup {
- const char * l_word;
- const int l_value;
- };
-
- static struct lookup const * byword P((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 time_t ats[TZ_MAX_TIMES];
- static unsigned char types[TZ_MAX_TIMES];
- static long gmtoffs[TZ_MAX_TYPES];
- static char isdsts[TZ_MAX_TYPES];
- static char abbrinds[TZ_MAX_TYPES];
- static char chars[TZ_MAX_CHARS];
- static time_t trans[TZ_MAX_LEAPS];
- static long corr[TZ_MAX_LEAPS];
- static char roll[TZ_MAX_LEAPS];
-
- /*
- ** Memory allocation.
- */
-
- static char *
- memcheck(ptr)
- char * ptr;
- {
- if (ptr == NULL) {
- (void) perror(progname);
- (void) exit(EXIT_FAILURE);
- }
- return ptr;
- }
-
- #define emalloc(size) memcheck(imalloc(size))
- #define erealloc(ptr, size) memcheck(irealloc(ptr, size))
- #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
- #define ecatalloc(oldp, newp) memcheck(icatalloc(oldp, newp))
-
- /*
- ** Error handling.
- */
-
- static void
- eats(name, num, rname, rnum)
- const char * name;
- const char * rname;
- {
- filename = name;
- linenum = num;
- rfilename = rname;
- rlinenum = rnum;
- }
-
- static void
- eat(name, num)
- const char * name;
- {
- eats(name, num, (char *) NULL, -1);
- }
-
- static void
- error(string)
- const char * string;
- {
- /*
- ** Match the format of "cc" to allow sh users to
- ** zic ... 2>&1 | error -t "*" -v
- ** on BSD systems.
- */
- (void) fprintf(stderr, "\"%s\", line %d: %s",
- filename, linenum, string);
- if (rfilename != NULL)
- (void) fprintf(stderr, " (rule from \"%s\", line %d)",
- rfilename, rlinenum);
- (void) fprintf(stderr, "\n");
- ++errors;
- }
-
- static void
- usage()
- {
- (void) fprintf(stderr,
- "%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -d directory ]\n\
- \t[ -L leapseconds ] [ filename ... ]\n",
- progname, progname);
- (void) exit(EXIT_FAILURE);
- }
-
- static const char * lcltime = NULL;
- static const char * directory = NULL;
- static const char * leapsec = NULL;
- static int sflag = FALSE;
-
- main(argc, argv)
- int argc;
- char * argv[];
- {
- register int i, j;
- register int c;
-
- #ifdef unix
- (void) umask(umask(022) | 022);
- #endif /* defined unix */
- progname = argv[0];
- while ((c = getopt(argc, argv, "d:l:L:vs")) != EOF)
- switch (c) {
- default:
- usage();
- case 'd':
- if (directory == NULL)
- directory = optarg;
- else {
- (void) fprintf(stderr,
- "%s: More than one -d option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'l':
- if (lcltime == NULL)
- lcltime = optarg;
- else {
- (void) fprintf(stderr,
- "%s: More than one -l option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'L':
- if (leapsec == NULL)
- leapsec = optarg;
- else {
- (void) fprintf(stderr,
- "%s: More than one -L option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'v':
- noise = TRUE;
- break;
- case 's':
- sflag = TRUE;
- break;
- }
- if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
- usage(); /* usage message by request */
- if (directory == NULL)
- directory = TZDIR;
- if (leapsec == NULL)
- leapsec = "leapseconds";
-
- setboundaries();
-
- if (optind < argc) {
- infile(leapsec);
- adjleap();
- }
-
- zones = (struct zone *) emalloc(0);
- rules = (struct rule *) emalloc(0);
- links = (struct link *) emalloc(0);
- for (i = optind; i < argc; ++i)
- infile(argv[i]);
- if (errors)
- (void) 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)
- ;
- outzone(&zones[i], j - i);
- }
- /*
- ** Make links.
- */
- for (i = 0; i < nlinks + (lcltime != NULL); ++i) {
- register char * fromname;
- register char * toname;
-
- fromname = ecpyalloc(directory);
- fromname = ecatalloc(fromname, "/");
- fromname = ecatalloc(fromname,
- (i == nlinks) ? lcltime : links[i].l_from);
- toname = ecpyalloc(directory);
- toname = ecatalloc(toname, "/");
- toname = ecatalloc(toname,
- (i == nlinks) ? TZDEFAULT : links[i].l_to);
- /*
- ** 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) {
- (void) fprintf(stderr, "%s: Can't link from %s to ",
- progname, fromname);
- (void) perror(toname);
- (void) exit(EXIT_FAILURE);
- }
- ifree(fromname);
- ifree(toname);
- }
- return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
- }
-
- static void
- setboundaries()
- {
- register time_t bit;
-
- for (bit = 1; bit > 0; bit <<= 1)
- ;
- if (bit == 0) { /* time_t is an unsigned type */
- tt_signed = FALSE;
- min_time = 0;
- max_time = ~(time_t) 0;
- if (sflag)
- max_time >>= 1;
- } else {
- tt_signed = TRUE;
- min_time = bit;
- max_time = bit;
- ++max_time;
- max_time = -max_time;
- if (sflag)
- min_time = 0;
- }
- min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
- max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
- }
-
- static int
- itsdir(name)
- char * name;
- {
- struct stat s;
-
- return stat(name, &s) == 0 && (s.st_mode & S_IFMT) == S_IFDIR;
- }
-
- /*
- ** Associate sets of rules with zones.
- */
-
- /*
- ** Sort by rule name.
- */
-
- static
- rcomp(cp1, cp2)
- const genericptr_t cp1;
- const genericptr_t cp2;
- {
- return strcmp(((struct rule *) cp1)->r_name,
- ((struct rule *) cp2)->r_name);
- }
-
- static void
- associate()
- {
- register struct zone * zp;
- register struct rule * rp;
- register int base, out;
- register int i;
-
- if (nrules != 0) {
- /*
- ** This only *looks* like an optimization;
- ** it's actually a workaround for a buggy Turbo C 1.5 qsort.
- */
- for (i = 1; i < nrules; ++i)
- if (rcomp((char *) &rules[i - 1],
- (char *) &rules[i]) > 0)
- break;
- if (i < nrules)
- (void) qsort((genericptr_t) rules,
- (qsort_size_t) nrules,
- (qsort_size_t) sizeof *rules, rcomp);
- }
- 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 in ruleless zone");
- }
- }
- if (errors)
- (void) exit(EXIT_FAILURE);
- }
-
- static void
- infile(name)
- 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) {
- (void) fprintf(stderr, "%s: Can't open ", progname);
- (void) perror(name);
- (void) exit(EXIT_FAILURE);
- }
- wantcont = FALSE;
- for (num = 1; ; ++num) {
- eat(name, num);
- if (fgets(buf, (int) sizeof buf, fp) != buf)
- break;
- cp = strchr(buf, '\n');
- if (cp == NULL) {
- error("line too long");
- (void) exit(EXIT_FAILURE);
- }
- *cp = '\0';
- fields = getfields(buf);
- nfields = 0;
- while (fields[nfields] != NULL) {
- if (ciequal(fields[nfields], "-"))
- fields[nfields] = "";
- ++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);
- (void) exit(EXIT_FAILURE);
- }
- }
- ifree((char *) fields);
- }
- if (ferror(fp)) {
- (void) fprintf(stderr, "%s: Error reading ", progname);
- (void) perror(filename);
- (void) exit(EXIT_FAILURE);
- }
- if (fp != stdin && fclose(fp)) {
- (void) fprintf(stderr, "%s: Error closing ", progname);
- (void) perror(filename);
- (void) 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 long
- gethms(string, errstring, signable)
- const char * string;
- const char * errstring;
- {
- int hh, 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, "%d"), &hh) == 1)
- mm = ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
- ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d:%d"),
- &hh, &mm, &ss) != 3) {
- error(errstring);
- return 0;
- }
- if (hh < 0 || hh >= HOURSPERDAY ||
- mm < 0 || mm >= MINSPERHOUR ||
- ss < 0 || ss > SECSPERMIN) {
- error(errstring);
- return 0;
- }
- return eitol(sign) *
- (eitol(hh * MINSPERHOUR + mm) *
- eitol(SECSPERMIN) + eitol(ss));
- }
-
- static void
- inrule(fields, nfields)
- register char ** fields;
- {
- 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]);
- rules = (struct rule *) erealloc((char *) rules,
- (int) ((nrules + 1) * sizeof *rules));
- rules[nrules++] = r;
- }
-
- static
- inzone(fields, nfields)
- register char ** fields;
- {
- register int i;
- char buf[132];
-
- 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) {
- (void) sprintf(buf,
- "\"Zone %s\" line and -l option are mutually exclusive",
- TZDEFAULT);
- error(buf);
- return FALSE;
- }
- for (i = 0; i < nzones; ++i)
- if (zones[i].z_name != NULL &&
- strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
- (void) sprintf(buf,
- "duplicate zone name %s (file \"%s\", line %d)",
- fields[ZF_NAME],
- zones[i].z_filename,
- zones[i].z_linenum);
- error(buf);
- return FALSE;
- }
- return inzsub(fields, nfields, FALSE);
- }
-
- static
- inzcont(fields, nfields)
- register char ** fields;
- {
- if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
- error("wrong number of fields on Zone continuation line");
- return FALSE;
- }
- return inzsub(fields, nfields, TRUE);
- }
-
- static
- inzsub(fields, nfields, iscont)
- register char ** fields;
- {
- 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 GMT 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]);
- 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 < max_time &&
- z.z_untiltime > min_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 = (struct zone *) erealloc((char *) zones,
- (int) ((nzones + 1) * sizeof *zones));
- 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(fields, nfields)
- register char ** fields;
- {
- register char * cp;
- register const struct lookup * lp;
- register int i, j;
- int year, month, day;
- long dayoff, tod;
- time_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, "%d"), &year) != 1 ||
- year < min_year || year > max_year) {
- error("invalid leaping year");
- return;
- }
- 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, eitol(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, eitol(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, eitol(day - 1));
- if (dayoff < 0 && !tt_signed) {
- error("time before zero");
- return;
- }
- t = (time_t) dayoff * SECSPERDAY;
- /*
- ** Cheap overflow check.
- */
- if (t / SECSPERDAY != dayoff) {
- error("time overflow");
- return;
- }
- tod = gethms(fields[LP_TIME], "invalid time of day", FALSE);
- cp = fields[LP_CORR];
- if (strcmp(cp, "+") != 0 && strcmp(cp, "") != 0) {
- /* infile() turned "-" into "" */
- 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;
- }
- addleap(tadd(t, tod), *cp == '+', lp->l_value);
- }
-
- static void
- inlink(fields, nfields)
- register char ** fields;
- {
- 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 = (struct link *) erealloc((char *) links,
- (int) ((nlinks + 1) * sizeof *links));
- links[nlinks++] = l;
- }
-
- static void
- rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
- register struct rule * rp;
- char * loyearp;
- char * hiyearp;
- char * typep;
- char * monthp;
- char * dayp;
- char * timep;
- {
- register struct lookup const * lp;
- register char * cp;
-
- if ((lp = byword(monthp, mon_names)) == NULL) {
- error("invalid month name");
- return;
- }
- rp->r_month = lp->l_value;
- rp->r_todisstd = FALSE;
- cp = timep;
- if (*cp != '\0') {
- cp += strlen(cp) - 1;
- switch (lowerit(*cp)) {
- case 's':
- rp->r_todisstd = TRUE;
- *cp = '\0';
- break;
- case 'w':
- rp->r_todisstd = FALSE;
- *cp = '\0';
- break;
- }
- }
- rp->r_tod = gethms(timep, "invalid time of day", FALSE);
- /*
- ** Year work.
- */
- cp = loyearp;
- if ((lp = byword(cp, begin_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_loyear = min_year;
- break;
- case YR_MAXIMUM:
- rp->r_loyear = max_year;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- "%s: panic: Invalid l_value %d\n",
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1 ||
- rp->r_loyear < min_year || rp->r_loyear > max_year) {
- if (noise)
- error("invalid starting year");
- if (rp->r_loyear > max_year)
- return;
- }
- cp = hiyearp;
- if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_hiyear = min_year;
- break;
- case YR_MAXIMUM:
- rp->r_hiyear = max_year;
- 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);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1 ||
- rp->r_hiyear < min_year || rp->r_hiyear > max_year) {
- if (noise)
- error("invalid ending year");
- if (rp->r_hiyear < min_year)
- return;
- }
- if (rp->r_hiyear < min_year)
- return;
- if (rp->r_loyear < min_year)
- rp->r_loyear = min_year;
- if (rp->r_hiyear > max_year)
- rp->r_hiyear = max_year;
- 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
- */
- if ((lp = byword(dayp, lasts)) != NULL) {
- rp->r_dycode = DC_DOWLEQ;
- rp->r_wday = lp->l_value;
- rp->r_dayofmonth = len_months[1][rp->r_month];
- } else {
- if ((cp = strchr(dayp, '<')) != 0)
- rp->r_dycode = DC_DOWLEQ;
- else if ((cp = strchr(dayp, '>')) != 0)
- rp->r_dycode = DC_DOWGEQ;
- else {
- cp = dayp;
- rp->r_dycode = DC_DOM;
- }
- if (rp->r_dycode != DC_DOM) {
- *cp++ = 0;
- if (*cp++ != '=') {
- error("invalid day of month");
- return;
- }
- if ((lp = byword(dayp, wday_names)) == NULL) {
- error("invalid weekday name");
- return;
- }
- rp->r_wday = lp->l_value;
- }
- if (sscanf(cp, scheck(cp, "%d"), &rp->r_dayofmonth) != 1 ||
- rp->r_dayofmonth <= 0 ||
- (rp->r_dayofmonth > len_months[1][rp->r_month])) {
- error("invalid day of month");
- return;
- }
- }
- }
-
- static void
- convert(val, buf)
- long val;
- char * buf;
- {
- register int i;
- register long shift;
-
- for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
- buf[i] = val >> shift;
- }
-
- static void
- puttzcode(val, fp)
- long val;
- FILE * fp;
- {
- char buf[4];
-
- convert(val, buf);
- (void) fwrite((genericptr_t) buf,
- (fwrite_size_t) sizeof buf,
- (fwrite_size_t) 1, fp);
- }
-
- static void
- writezone(name)
- const char * name;
- {
- register FILE * fp;
- register int i, j;
- char fullname[BUFSIZ];
- static struct tzhead tzh;
-
- if (strlen(directory) + 1 + strlen(name) >= sizeof fullname) {
- (void) fprintf(stderr,
- "%s: File name %s/%s too long\n", progname,
- directory, name);
- (void) exit(EXIT_FAILURE);
- }
- (void) sprintf(fullname, "%s/%s", directory, name);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- if (mkdirs(fullname) != 0)
- (void) exit(EXIT_FAILURE);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- (void) fprintf(stderr, "%s: Can't create ", progname);
- (void) perror(fullname);
- (void) exit(EXIT_FAILURE);
- }
- }
- convert(eitol(leapcnt), tzh.tzh_leapcnt);
- convert(eitol(timecnt), tzh.tzh_timecnt);
- convert(eitol(typecnt), tzh.tzh_typecnt);
- convert(eitol(charcnt), tzh.tzh_charcnt);
- (void) fwrite((genericptr_t) &tzh,
- (fwrite_size_t) sizeof tzh,
- (fwrite_size_t) 1, fp);
- for (i = 0; i < timecnt; ++i) {
- j = leapcnt;
- while (--j >= 0)
- if (ats[i] >= trans[j]) {
- ats[i] = tadd(ats[i], corr[j]);
- break;
- }
- puttzcode((long) ats[i], fp);
- }
- if (timecnt > 0)
- (void) fwrite((genericptr_t) types,
- (fwrite_size_t) sizeof types[0],
- (fwrite_size_t) timecnt, fp);
- for (i = 0; i < typecnt; ++i) {
- puttzcode((long) gmtoffs[i], fp);
- (void) putc(isdsts[i], fp);
- (void) putc(abbrinds[i], fp);
- }
- if (charcnt != 0)
- (void) fwrite((genericptr_t) chars,
- (fwrite_size_t) sizeof chars[0],
- (fwrite_size_t) charcnt, fp);
- for (i = 0; i < leapcnt; ++i) {
- 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];
- }
- puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
- } else puttzcode((long) trans[i], fp);
- puttzcode((long) corr[i], fp);
- }
- if (ferror(fp) || fclose(fp)) {
- (void) fprintf(stderr, "%s: Write error on ", progname);
- (void) perror(fullname);
- (void) exit(EXIT_FAILURE);
- }
- }
-
- static void
- outzone(zpfirst, zonecount)
- const struct zone * zpfirst;
- {
- register const struct zone * zp;
- register struct rule * rp;
- register int i, j;
- register int usestart, useuntil;
- register time_t starttime, untiltime;
- register long gmtoff;
- register long stdoff;
- register int year;
- register long startoff;
- register int startisdst;
- register int type;
- char startbuf[BUFSIZ];
-
- /*
- ** Now. . .finally. . .generate some useful data!
- */
- timecnt = 0;
- typecnt = 0;
- charcnt = 0;
- /*
- ** Two guesses. . .the second may well be corrected later.
- */
- gmtoff = zpfirst->z_gmtoff;
- stdoff = 0;
- #ifdef lint
- starttime = 0;
- #endif /* defined lint */
- #ifdef __TURBOC__
- starttime = 0;
- #endif /* defined __TURBOC__ */
- for (i = 0; i < zonecount; ++i) {
- usestart = i > 0;
- useuntil = i < (zonecount - 1);
- zp = &zpfirst[i];
- eat(zp->z_filename, zp->z_linenum);
- startisdst = -1;
- if (zp->z_nrules == 0) {
- type = addtype(oadd(zp->z_gmtoff, zp->z_stdoff),
- zp->z_format, zp->z_stdoff != 0);
- if (usestart)
- addtt(starttime, type);
- gmtoff = zp->z_gmtoff;
- stdoff = zp->z_stdoff;
- } 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 time_t jtime, ktime;
- register long offset;
- char buf[BUFSIZ];
-
- if (useuntil) {
- /*
- ** Turn untiltime into GMT
- ** assuming the current gmtoff and
- ** stdoff values.
- */
- offset = gmtoff;
- if (!zp->z_untilrule.r_todisstd)
- offset = oadd(offset, stdoff);
- untiltime = tadd(zp->z_untiltime,
- -offset);
- }
- /*
- ** Find the rule (of those to do, if any)
- ** that takes effect earliest in the year.
- */
- k = -1;
- #ifdef lint
- ktime = 0;
- #endif /* defined lint */
- #ifdef __TURBOC__
- ktime = 0;
- #endif /* defined __TURBOC__ */
- 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 = 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;
- if (usestart) {
- if (ktime < starttime) {
- stdoff = rp->r_stdoff;
- startoff = oadd(zp->z_gmtoff,
- rp->r_stdoff);
- (void) sprintf(startbuf,
- zp->z_format,
- rp->r_abbrvar);
- startisdst =
- rp->r_stdoff != 0;
- continue;
- }
- if (ktime != starttime &&
- startisdst >= 0)
- addtt(starttime, addtype(startoff, startbuf, startisdst));
- usestart = FALSE;
- }
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- (void) sprintf(buf, zp->z_format,
- rp->r_abbrvar);
- offset = oadd(zp->z_gmtoff, rp->r_stdoff);
- type = addtype(offset, buf, rp->r_stdoff != 0);
- if (timecnt != 0 || rp->r_stdoff != 0)
- addtt(ktime, type);
- gmtoff = zp->z_gmtoff;
- stdoff = rp->r_stdoff;
- }
- }
- /*
- ** Now we may get to set starttime for the next zone line.
- */
- if (useuntil)
- starttime = tadd(zp->z_untiltime,
- -gmtoffs[types[timecnt - 1]]);
- }
- writezone(zpfirst->z_name);
- }
-
- static void
- addtt(starttime, type)
- time_t starttime;
- {
- if (timecnt != 0 && type == types[timecnt - 1])
- return; /* easy enough! */
- if (timecnt >= TZ_MAX_TIMES) {
- error("too many transitions?!");
- (void) exit(EXIT_FAILURE);
- }
- ats[timecnt] = starttime;
- types[timecnt] = type;
- ++timecnt;
- }
-
- static
- addtype(gmtoff, abbr, isdst)
- long gmtoff;
- const char * abbr;
- {
- register int i, j;
-
- /*
- ** 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] &&
- strcmp(abbr, &chars[abbrinds[i]]) == 0)
- 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");
- (void) exit(EXIT_FAILURE);
- }
- gmtoffs[i] = gmtoff;
- isdsts[i] = isdst;
-
- 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
- addleap(t, positive, rolling)
- time_t t;
- {
- register int i, j;
-
- if (leapcnt >= TZ_MAX_LEAPS) {
- error("too many leap seconds");
- (void) exit(EXIT_FAILURE);
- }
- for (i = 0; i < leapcnt; ++i)
- if (t <= trans[i]) {
- if (t == trans[i]) {
- error("repeated leap second moment");
- (void) exit(EXIT_FAILURE);
- }
- break;
- }
- 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 ? 1L : -1L);
- roll[i] = rolling;
- ++leapcnt;
- }
-
- static void
- adjleap()
- {
- register int i;
- register long last = 0;
-
- /*
- ** propagate leap seconds forward
- */
- for (i = 0; i < leapcnt; ++i) {
- trans[i] = tadd(trans[i], last);
- last = corr[i] += last;
- }
- }
-
- static
- yearistype(year, type)
- const char * type;
- {
- char buf[BUFSIZ];
- int result;
-
- if (type == NULL || *type == '\0')
- return TRUE;
- if (strcmp(type, "uspres") == 0)
- return (year % 4) == 0;
- if (strcmp(type, "nonpres") == 0)
- return (year % 4) != 0;
- (void) sprintf(buf, "yearistype %d %s", year, type);
- result = system(buf);
- if (result == 0)
- return TRUE;
- if (result == (1 << 8))
- return FALSE;
- error("Wild result from command execution");
- (void) fprintf(stderr, "%s: command was '%s', result was %d\n",
- progname, buf, result);
- for ( ; ; )
- (void) exit(EXIT_FAILURE);
- }
-
- static
- lowerit(a)
- {
- return (isascii(a) && isupper(a)) ? tolower(a) : a;
- }
-
- static
- ciequal(ap, bp) /* case-insensitive equality */
- register const char * ap;
- register const char * bp;
- {
- while (lowerit(*ap) == lowerit(*bp++))
- if (*ap++ == '\0')
- return TRUE;
- return FALSE;
- }
-
- static int
- itsabbr(abbr, word)
- 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 const struct lookup *
- byword(word, table)
- register const char * word;
- register const struct lookup * 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(cp)
- register char * cp;
- {
- register char * dp;
- register char ** array;
- register int nsubs;
-
- if (cp == NULL)
- return NULL;
- array = (char **) emalloc((int) ((strlen(cp) + 1) * sizeof *array));
- nsubs = 0;
- for ( ; ; ) {
- while (isascii(*cp) && isspace(*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");
- } while (*cp != '\0' && *cp != '#' &&
- (!isascii(*cp) || !isspace(*cp)));
- if (isascii(*cp) && isspace(*cp))
- ++cp;
- *dp = '\0';
- }
- array[nsubs] = NULL;
- return array;
- }
-
- static long
- oadd(t1, t2)
- long t1;
- long t2;
- {
- register long t;
-
- t = t1 + t2;
- if (t2 > 0 && t <= t1 || t2 < 0 && t >= t1) {
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return t;
- }
-
- static time_t
- tadd(t1, t2)
- time_t t1;
- long t2;
- {
- register time_t t;
-
- if (t1 == max_time && t2 > 0)
- return max_time;
- if (t1 == min_time && t2 < 0)
- return min_time;
- t = t1 + t2;
- if (t2 > 0 && t <= t1 || t2 < 0 && t >= t1) {
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return t;
- }
-
- /*
- ** 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 time_t
- rpytime(rp, wantedy)
- register const struct rule * rp;
- register int wantedy;
- {
- register int y, m, i;
- register long dayoff; /* with a nod to Margaret O. */
- register time_t t;
-
- 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, eitol(i));
- }
- while (m != rp->r_month) {
- i = len_months[isleap(y)][m];
- dayoff = oadd(dayoff, eitol(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");
- (void) exit(EXIT_FAILURE);
- }
- }
- --i;
- dayoff = oadd(dayoff, eitol(i));
- if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
- register long wday;
-
- #define LDAYSPERWEEK ((long) DAYSPERWEEK)
- wday = eitol(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 != eitol(rp->r_wday))
- if (rp->r_dycode == DC_DOWGEQ) {
- dayoff = oadd(dayoff, (long) 1);
- if (++wday >= LDAYSPERWEEK)
- wday = 0;
- ++i;
- } else {
- dayoff = oadd(dayoff, (long) -1);
- if (--wday < 0)
- wday = LDAYSPERWEEK;
- --i;
- }
- if (i < 0 || i >= len_months[isleap(y)][m]) {
- error("no day in month matches rule");
- (void) exit(EXIT_FAILURE);
- }
- }
- if (dayoff < 0 && !tt_signed) {
- if (wantedy == rp->r_loyear)
- return min_time;
- error("time before zero");
- (void) exit(EXIT_FAILURE);
- }
- t = (time_t) dayoff * SECSPERDAY;
- /*
- ** Cheap overflow check.
- */
- if (t / SECSPERDAY != dayoff) {
- if (wantedy == rp->r_hiyear)
- return max_time;
- if (wantedy == rp->r_loyear)
- return min_time;
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return tadd(t, rp->r_tod);
- }
-
- static void
- newabbr(string)
- const char * string;
- {
- register int i;
-
- i = strlen(string) + 1;
- if (charcnt + i >= TZ_MAX_CHARS) {
- error("too many, or too long, time zone abbreviations");
- (void) exit(EXIT_FAILURE);
- }
- (void) strcpy(&chars[charcnt], string);
- charcnt += eitol(i);
- }
-
- static
- mkdirs(name)
- char * name;
- {
- register char * cp;
-
- if ((cp = name) == NULL || *cp == '\0')
- return 0;
- while ((cp = strchr(cp + 1, '/')) != 0) {
- *cp = '\0';
- #ifndef unix
- /*
- ** MS-DOS drive specifier?
- */
- if (strlen(name) == 2 && isascii(name[0]) &&
- isalpha(name[0]) && name[1] == ':') {
- *cp = '/';
- continue;
- }
- #endif /* !defined unix */
- if (!itsdir(name)) {
- /*
- * It doesn't seem to exist, so we try to create it.
- */
- if (emkdir(name, 0755) != 0) {
- (void) fprintf(stderr,
- "%s: Can't create directory ",
- progname);
- (void) perror(name);
- return -1;
- }
- }
- *cp = '/';
- }
- return 0;
- }
-
- static long
- eitol(i)
- {
- long l;
-
- l = i;
- if (i < 0 && l >= 0 || i == 0 && l != 0 || i > 0 && l <= 0) {
- (void) fprintf(stderr, "%s: %d did not sign extend correctly\n",
- progname, i);
- (void) exit(EXIT_FAILURE);
- }
- return l;
- }
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of zic.c
- echo 'zdump.c' 1>&2
- cat >'zdump.c' <<'End of zdump.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)zdump.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- #include "stdio.h"
- #include "time.h"
- #include "tzfile.h"
- #include "string.h"
- #include "stdlib.h"
- #include "nonstd.h"
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif /* !defined TRUE */
-
- extern char ** environ;
- extern void ifree P((char * p));
- extern char * imalloc P((int n));
- extern int getopt P((int argc, char * argv[], char * options));
- extern char * optarg;
- extern int optind;
- extern char * tzname[2];
- extern void tzset P((void));
-
- static int longest;
- static void readerr P((FILE * fp,
- const char * progname, const char * filename));
- static void show P((const char * zone, time_t t, int v));
- static long tzdecode P((const char * buffer));
-
- static long
- tzdecode(codep)
- const char * codep;
- {
- register int i;
- register long result;
-
- result = 0;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
- }
-
- main(argc, argv)
- int argc;
- char * argv[];
- {
- register FILE * fp;
- register int i, j, c;
- register int vflag;
- register const char * cutoff;
- register int cutyear;
- register long cuttime, k;
- time_t now;
- time_t t;
- long leapcnt, timecnt;
- long typecnt, charcnt;
- char buf[FILENAME_MAX + 1];
-
- vflag = 0;
- cutoff = NULL;
- while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
- if (c == 'v')
- vflag = 1;
- else cutoff = optarg;
- if (c != EOF || optind == argc - 1 && strcmp(argv[optind], "=") == 0) {
- (void) fprintf(stderr, "%s: usage is %s [ -v ] zonename ...\n",
- argv[0], argv[0]);
- (void) exit(EXIT_FAILURE);
- }
- if (cutoff != NULL)
- cutyear = atoi(cutoff);
- /*
- ** VERY approximate.
- */
- cuttime = (long) (cutyear - EPOCH_YEAR) *
- SECSPERHOUR * HOURSPERDAY * DAYSPERNYEAR;
- (void) time(&now);
- longest = 0;
- for (i = optind; i < argc; ++i)
- if (strlen(argv[i]) > longest)
- longest = strlen(argv[i]);
- for (i = optind; i < argc; ++i) {
- register char ** saveenv;
- char * tzequals;
- char * fakeenv[2];
-
- tzequals = imalloc(strlen(argv[i]) + 4);
- if (tzequals == NULL) {
- (void) fprintf(stderr, "%s: can't allocate memory\n",
- argv[0]);
- (void) exit(EXIT_FAILURE);
- }
- (void) sprintf(tzequals, "TZ=%s", argv[i]);
- fakeenv[0] = tzequals;
- fakeenv[1] = NULL;
- saveenv = environ;
- environ = fakeenv;
- (void) tzset();
- environ = saveenv;
- show(argv[i], now, FALSE);
- if (!vflag)
- continue;
- if (argv[i][0] == '\0') {
- fp = NULL;
- timecnt = 0;
- leapcnt = 0;
- } else {
- struct tzhead tzh;
-
- if (argv[i][0] == '/')
- fp = fopen(argv[i], "rb");
- else {
- j = strlen(TZDIR) + 1 + strlen(argv[i]) + 1;
- if (j > sizeof buf) {
- (void) fprintf(stderr,
- "%s: timezone name %s/%s is too long\n",
- argv[0], TZDIR, argv[i]);
- (void) exit(EXIT_FAILURE);
- }
- (void) sprintf(buf, "%s/%s", TZDIR, argv[i]);
- fp = fopen(buf, "rb");
- }
- if (fp == NULL) {
- (void) fprintf(stderr, "%s: Can't open ",
- argv[0]);
- (void) perror(argv[i]);
- (void) exit(EXIT_FAILURE);
- }
- if (fread((genericptr_t) &tzh,
- (fread_size_t) sizeof tzh,
- (fread_size_t) 1, fp) != 1)
- readerr(fp, argv[0], argv[i]);
- leapcnt = tzdecode(tzh.tzh_leapcnt);
- timecnt = tzdecode(tzh.tzh_timecnt);
- typecnt = tzdecode(tzh.tzh_typecnt);
- charcnt = tzdecode(tzh.tzh_charcnt);
- }
- t = 0x80000000;
- if (t > 0) /* time_t is unsigned */
- t = 0;
- show(argv[i], t, TRUE);
- t += SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- for (k = timecnt; k > 0; --k) {
- char code[4];
-
- if (fread((genericptr_t) code,
- (fread_size_t) sizeof code,
- (fread_size_t) 1, fp) != 1)
- readerr(fp, argv[0], argv[i]);
- t = tzdecode(code);
- if (cutoff != NULL && t > cuttime)
- break;
- show(argv[i], t - 1, TRUE);
- show(argv[i], t, TRUE);
- }
- if (fp != NULL)
- (void) fseek(fp, (long) sizeof (struct tzhead) +
- timecnt * 5 + typecnt * 6 + charcnt, 0);
- for (k = leapcnt; k > 0; --k) {
- char code[4];
-
- if (fread((genericptr_t) code,
- (fread_size_t) sizeof code,
- (fread_size_t) 1, fp) != 1)
- readerr(fp, argv[0], argv[i]);
- (void) fseek(fp, (long) sizeof code, 1);
- t = tzdecode(code);
- if (cutoff != NULL && t > cuttime)
- break;
- show(argv[i], t - 1, TRUE);
- show(argv[i], t, TRUE);
- show(argv[i], t + 1, TRUE);
- }
- if (fp != NULL && fclose(fp)) {
- (void) fprintf(stderr, "%s: Error closing ", argv[0]);
- (void) perror(argv[i]);
- (void) exit(EXIT_FAILURE);
- }
- t = 0xffffffff;
- if (t < 0) /* time_t is signed */
- t = 0x7fffffff ;
- t -= SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- t += SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- ifree(tzequals);
- }
- if (fflush(stdout) || ferror(stdout)) {
- (void) fprintf(stderr, "%s: Error writing standard output ",
- argv[0]);
- (void) perror("standard output");
- (void) exit(EXIT_FAILURE);
- }
- return 0;
- }
-
- static void
- show(zone, t, v)
- const char * zone;
- time_t t;
- {
- const struct tm * tmp;
- extern struct tm * localtime();
-
- (void) printf("%-*s ", longest, zone);
- if (v)
- (void) printf("%.24s GMT = ", asctime(gmtime(&t)));
- tmp = localtime(&t);
- (void) printf("%.24s", asctime(tmp));
- if (*tzname[tmp->tm_isdst] != '\0')
- (void) printf(" %s", tzname[tmp->tm_isdst]);
- if (v) {
- (void) printf(" isdst=%d", tmp->tm_isdst);
- #ifdef KRE_COMPAT
- (void) printf(" gmtoff=%ld", tmp->tm_gmtoff);
- #endif /* KRE_COMPAT */
- }
- (void) printf("\n");
- }
-
- static void
- readerr(fp, progname, filename)
- FILE * fp;
- const char * progname;
- const char * filename;
- {
- (void) fprintf(stderr, "%s: Error reading ", progname);
- if (ferror(fp))
- (void) perror(filename);
- else (void) fprintf(stderr, "%s: Premature EOF\n", filename);
- (void) exit(EXIT_FAILURE);
- }
- End of zdump.c
- echo 'localtime.c' 1>&2
- cat >'localtime.c' <<'End of localtime.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)localtime.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #include "tzfile.h"
- #include "time.h"
- #include "string.h"
- #include "stdlib.h"
- #include "stdio.h" /* for FILENAME_MAX */
- #include "fcntl.h" /* for O_RDONLY */
- #include "nonstd.h"
-
- #ifdef __TURBOC__
- #include "io.h" /* for open et al. prototypes */
- #endif /* defined __TURBOC__ */
-
- #define ACCESS_MODE O_RDONLY
-
- #ifdef O_BINARY
- #define OPEN_MODE O_RDONLY | O_BINARY
- #else /* !defined O_BINARY */
- #define OPEN_MODE O_RDONLY
- #endif /* !defined O_BINARY */
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif /* !defined TRUE */
-
- static long detzcode P((const char * codep));
- #ifdef STD_INSPIRED
- struct tm * offtime P((const time_t * clockp, long offset));
- #endif /* !defined STD_INSPIRED */
- static void timesub P((const time_t * clockp, long offset,
- const struct state * sp, struct tm * tmp));
- static int tzload P((const char * name, struct state * sp));
- void tzsetwall P((void));
-
- struct ttinfo { /* time type information */
- long tt_gmtoff; /* GMT offset in seconds */
- int tt_isdst; /* used to set tm_isdst */
- int tt_abbrind; /* abbreviation list index */
- };
-
- struct lsinfo { /* leap second information */
- time_t ls_trans; /* transition time */
- long ls_corr; /* correction to apply */
- };
-
- struct state {
- int leapcnt;
- int timecnt;
- int typecnt;
- int charcnt;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[TZ_MAX_CHARS + 1];
- struct lsinfo lsis[TZ_MAX_LEAPS];
- };
-
- static struct state lclstate;
- static struct state gmtstate;
-
- static int lcl_is_set;
- static int gmt_is_set;
-
- char * tzname[2] = {
- "GMT",
- "GMT"
- };
-
- #ifdef USG_COMPAT
- time_t timezone = 0;
- int daylight = 0;
- #endif /* defined USG_COMPAT */
-
- #ifdef TZA_COMPAT
- char * tz_abbr; /* compatibility w/older versions */
- #endif /* defined TZA_COMPAT */
-
- static long
- detzcode(codep)
- const char * codep;
- {
- register long result;
- register int i;
-
- result = 0;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
- }
-
- static int
- tzload(name, sp)
- register const char * name;
- register struct state * sp;
- {
- register const char * p;
- register int i;
- register int fid;
-
- if (name == 0 && (name = TZDEFAULT) == 0)
- return -1;
- {
- register int doaccess;
- char fullname[FILENAME_MAX + 1];
-
- doaccess = name[0] == '/';
- if (!doaccess) {
- if ((p = TZDIR) == NULL)
- return -1;
- if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
- return -1;
- (void) strcpy(fullname, p);
- (void) strcat(fullname, "/");
- (void) strcat(fullname, name);
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
- if (doaccess && access(name, ACCESS_MODE) != 0)
- return -1;
- if ((fid = open(name, OPEN_MODE)) == -1)
- return -1;
- }
- {
- register const struct tzhead * tzhp;
- char buf[sizeof *sp];
-
- i = read(fid, buf, sizeof buf);
- if (close(fid) != 0 || i < sizeof *tzhp)
- return -1;
- tzhp = (struct tzhead *) buf;
- sp->leapcnt = (int) detzcode(tzhp->tzh_leapcnt);
- sp->timecnt = (int) detzcode(tzhp->tzh_timecnt);
- sp->typecnt = (int) detzcode(tzhp->tzh_typecnt);
- sp->charcnt = (int) detzcode(tzhp->tzh_charcnt);
- if (sp->leapcnt > TZ_MAX_LEAPS ||
- sp->timecnt > TZ_MAX_TIMES ||
- sp->typecnt == 0 ||
- sp->typecnt > TZ_MAX_TYPES ||
- sp->charcnt > TZ_MAX_CHARS)
- return -1;
- if (i < sizeof *tzhp +
- sp->timecnt * (4 + sizeof (char)) +
- sp->typecnt * (4 + 2 * sizeof (char)) +
- sp->charcnt * sizeof (char) +
- sp->leapcnt * 2 * 4)
- return -1;
- p = buf + sizeof *tzhp;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->timecnt; ++i)
- sp->types[i] = (unsigned char) *p++;
- for (i = 0; i < sp->typecnt; ++i) {
- register struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- ttisp->tt_gmtoff = detzcode(p);
- p += 4;
- ttisp->tt_isdst = (unsigned char) *p++;
- ttisp->tt_abbrind = (unsigned char) *p++;
- }
- for (i = 0; i < sp->charcnt; ++i)
- sp->chars[i] = *p++;
- sp->chars[i] = '\0'; /* ensure '\0' at end */
- for (i = 0; i < sp->leapcnt; ++i) {
- register struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = detzcode(p);
- p += 4;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- }
- /*
- ** Check that all the local time type indices are valid.
- */
- for (i = 0; i < sp->timecnt; ++i)
- if (sp->types[i] >= sp->typecnt)
- return -1;
- /*
- ** Check that all abbreviation indices are valid.
- */
- for (i = 0; i < sp->typecnt; ++i)
- if (sp->ttis[i].tt_abbrind >= sp->charcnt)
- return -1;
- /*
- ** Set tzname elements to initial values.
- */
- if (sp == &lclstate) {
- tzname[0] = tzname[1] = &sp->chars[0];
- #ifdef USG_COMPAT
- timezone = -sp->ttis[0].tt_gmtoff;
- daylight = 0;
- #endif /* defined USG_COMPAT */
- for (i = 1; i < sp->typecnt; ++i) {
- register const struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisp->tt_isdst) {
- tzname[1] = &sp->chars[ttisp->tt_abbrind];
- #ifdef USG_COMPAT
- daylight = 1;
- #endif /* defined USG_COMPAT */
- } else {
- tzname[0] = &sp->chars[ttisp->tt_abbrind];
- #ifdef USG_COMPAT
- timezone = -ttisp->tt_gmtoff;
- #endif /* defined USG_COMPAT */
- }
- }
- }
- return 0;
- }
-
- static void
- tzsetgmt(sp)
- register struct state * sp;
- {
- sp->leapcnt = 0; /* so, we're off a little */
- sp->timecnt = 0;
- sp->ttis[0].tt_gmtoff = 0;
- sp->ttis[0].tt_abbrind = 0;
- (void) strcpy(sp->chars, "GMT");
- if (sp == &lclstate) {
- tzname[0] = tzname[1] = sp->chars;
- #ifdef USG_COMPAT
- timezone = 0;
- daylight = 0;
- #endif /* defined USG_COMPAT */
- }
- }
-
- void
- tzset()
- {
- register const char * name;
-
- lcl_is_set = TRUE;
- name = getenv("TZ");
- if (name != 0 && *name == '\0')
- tzsetgmt(&lclstate); /* GMT by request */
- else if (tzload(name, &lclstate) != 0)
- tzsetgmt(&lclstate);
- }
-
- void
- tzsetwall()
- {
- lcl_is_set = TRUE;
- if (tzload((char *) 0, &lclstate) != 0)
- tzsetgmt(&lclstate);
- }
-
- struct tm *
- localtime(timep)
- const time_t * timep;
- {
- register const struct state * sp;
- register const struct ttinfo * ttisp;
- register int i;
- time_t t;
- static struct tm tm;
-
- if (!lcl_is_set)
- tzset();
- sp = &lclstate;
- t = *timep;
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- for (i = 1; i < sp->timecnt; ++i)
- if (t < sp->ats[i])
- break;
- i = sp->types[i - 1];
- }
- ttisp = &sp->ttis[i];
- /*
- ** To get (wrong) behavior that's compatible with System V Release 2.0
- ** you'd replace the statement below with
- ** t += ttisp->tt_gmtoff;
- ** timesub(&t, 0L, sp, &tm);
- */
- timesub(&t, ttisp->tt_gmtoff, sp, &tm);
- tm.tm_isdst = ttisp->tt_isdst;
- tzname[tm.tm_isdst] = &sp->chars[ttisp->tt_abbrind];
- #ifdef KRE_COMPAT
- tm.tm_zone = &sp->chars[ttisp->tt_abbrind];
- #endif /* defined KRE_COMPAT */
- #ifdef TZA_COMPAT
- tz_abbr = &sp->chars[ttisp->tt_abbrind];
- #endif /* defined TZA_COMPAT */
- return &tm;
- }
-
- struct tm *
- gmtime(clock)
- const time_t * clock;
- {
- static struct tm tm;
-
- if (!gmt_is_set) {
- gmt_is_set = TRUE;
- if (tzload("GMT", &gmtstate) != 0)
- tzsetgmt(&gmtstate);
- }
- timesub(clock, 0L, &gmtstate, &tm);
- #ifdef KRE_COMPAT
- tm.tm_zone = "GMT"; /* UCT ? */
- #endif /* defined KRE_COMPAT */
- return &tm;
- }
-
- #ifdef STD_INSPIRED
-
- struct tm *
- offtime(clock, offset)
- const time_t * clock;
- long offset;
- {
- static struct tm tm;
-
- if (!gmt_is_set) {
- gmt_is_set = TRUE;
- if (tzload("GMT", &gmtstate) != 0)
- tzsetgmt(&gmtstate);
- }
- timesub(clock, offset, &gmtstate, &tm);
- return &tm;
- }
-
- #endif /* defined STD_INSPIRED */
-
- static const int mon_lengths[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 year_lengths[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
- };
-
- static void
- timesub(clock, offset, sp, tmp)
- const time_t * clock;
- long offset;
- register const struct state * sp;
- register struct tm * tmp;
- {
- register const struct lsinfo * lp;
- register long days;
- register long rem;
- register int y;
- register int yleap;
- register const int * ip;
- register long corr;
- register int hit;
-
- corr = 0;
- hit = FALSE;
- y = sp->leapcnt;
- while (--y >= 0) {
- lp = &sp->lsis[y];
- if (*clock >= lp->ls_trans) {
- if (*clock == lp->ls_trans)
- hit = ((y == 0 && lp->ls_corr > 0) ||
- lp->ls_corr > sp->lsis[y-1].ls_corr);
- corr = lp->ls_corr;
- break;
- }
- }
- days = *clock / SECSPERDAY;
- rem = *clock % SECSPERDAY;
- rem += (offset - corr);
- while (rem < 0) {
- rem += SECSPERDAY;
- --days;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++days;
- }
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem = rem % SECSPERHOUR;
- tmp->tm_min = (int) (rem / SECSPERMIN);
- tmp->tm_sec = (int) (rem % SECSPERMIN);
- if (hit)
- /*
- * A positive leap second requires a special
- * representation. This uses "... ??:59:60".
- */
- tmp->tm_sec += 1;
- tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- y = EPOCH_YEAR;
- if (days >= 0)
- for ( ; ; ) {
- yleap = isleap(y);
- if (days < (long) year_lengths[yleap])
- break;
- ++y;
- days = days - (long) year_lengths[yleap];
- }
- else do {
- --y;
- yleap = isleap(y);
- days = days + (long) year_lengths[yleap];
- } while (days < 0);
- tmp->tm_year = y - TM_YEAR_BASE;
- tmp->tm_yday = (int) days;
- ip = mon_lengths[yleap];
- for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
- days = days - (long) ip[tmp->tm_mon];
- tmp->tm_mday = (int) (days + 1);
- tmp->tm_isdst = 0;
- #ifdef KRE_COMPAT
- tmp->tm_zone = "";
- tmp->tm_gmtoff = offset;
- #endif /* defined KRE_COMPAT */
- }
-
- #ifdef BSD_COMPAT
-
- /*
- ** If ctime and localtime aren't in the same file on 4.3BSD systems,
- ** you can run into compilation problems--take
- ** cc date.c -lz
- ** (please).
- */
-
- char *
- ctime(timep)
- const time_t * timep;
- {
- return asctime(localtime(timep));
- }
-
- #endif /* defined BSD_COMPAT */
- End of localtime.c
- echo 'asctime.c' 1>&2
- cat >'asctime.c' <<'End of asctime.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)asctime.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #include "stdio.h"
- #include "time.h"
- #include "tzfile.h"
- #include "nonstd.h"
-
- /*
- ** A la X3J11
- */
-
- char *
- asctime(timeptr)
- register const struct tm * timeptr;
- {
- static const char wday_name[DAYSPERWEEK][3] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
- };
- static const char mon_name[MONSPERYEAR][3] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- static char result[26];
-
- (void) sprintf(result, "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n",
- wday_name[timeptr->tm_wday],
- mon_name[timeptr->tm_mon],
- timeptr->tm_mday, timeptr->tm_hour,
- timeptr->tm_min, timeptr->tm_sec,
- TM_YEAR_BASE + timeptr->tm_year);
- return result;
- }
- End of asctime.c
- echo 'ctime.c' 1>&2
- cat >'ctime.c' <<'End of ctime.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)ctime.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #ifndef BSD_COMPAT
-
- /*
- ** On non-BSD systems, this can be a separate function (as is proper).
- */
-
- #include "time.h"
- #include "nonstd.h"
-
- char *
- ctime(timep)
- const time_t * timep;
- {
- return asctime(localtime(timep));
- }
-
- #endif /* !defined BSD_COMPAT */
- End of ctime.c
- echo 'dysize.c' 1>&2
- cat >'dysize.c' <<'End of dysize.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)dysize.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #ifdef BSD_COMPAT
-
- #include "tzfile.h"
-
- dysize(y)
- {
- /*
- ** The 4.[0123]BSD version of dysize behaves as if the return statement
- ** below read
- ** return ((y % 4) == 0) ? DAYSPERLYEAR : DAYSPERNYEAR;
- ** but since we'd rather be right than (strictly) compatible. . .
- */
- return isleap(y) ? DAYSPERLYEAR : DAYSPERNYEAR;
- }
-
- #endif /* defined BSD_COMPAT */
- End of dysize.c
- echo 'timemk.c' 1>&2
- cat >'timemk.c' <<'End of timemk.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)timemk.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #ifdef STD_INSPIRED
-
- /*
- ** Code provided by Robert Elz, who writes:
- ** The "best" way to do mktime I think is based on an idea of Bob
- ** Kridle's (so its said...) from a long time ago. (mtxinu!kridle now).
- ** It does a binary search of the time_t space. Since time_t's are
- ** just 32 bits, its a max of 32 iterations (even at 64 bits it
- ** would still be very reasonable).
- **
- ** This code does handle "out of bounds" values in the way described
- ** for "mktime" in the October, 1986 draft of the proposed ANSI C Standard;
- ** though this is an accident of the implementation and *cannot* be made to
- ** work correctly for the purposes there described.
- **
- ** A warning applies if you try to use these functions with a version of
- ** "localtime" that has overflow problems (such as System V Release 2.0
- ** or 4.3 BSD localtime).
- ** If you're not using GMT and feed a value to localtime
- ** that's near the minimum (or maximum) possible time_t value, localtime
- ** may return a struct that represents a time near the maximum (or minimum)
- ** possible time_t value (because of overflow). If such a returned struct tm
- ** is fed to timelocal, it will not return the value originally feed to
- ** localtime.
- */
-
- #include "time.h"
- #include "tzfile.h"
- #include "nonstd.h"
-
- #ifndef WRONG
- #define WRONG (-1)
- #endif /* !defined WRONG */
-
- extern struct tm * offtime P((const time_t * clock, long offset));
-
- static time_t
- timemk(timeptr, funcp, offset)
- const struct tm * timeptr;
- struct tm * (* funcp)();
- long offset;
- {
- register int direction;
- register int bits;
- time_t t;
- struct tm yourtm, mytm;
-
- yourtm = *timeptr;
- /*
- ** Correct the tm supplied, in case some of its values are
- ** out of range.
- */
- while (yourtm.tm_sec > SECSPERMIN) /* could be leap sec */
- ++yourtm.tm_min, yourtm.tm_sec -= SECSPERMIN;
- while (yourtm.tm_sec < 0)
- --yourtm.tm_min, yourtm.tm_sec += SECSPERMIN;
- while (yourtm.tm_min >= MINSPERHOUR)
- ++yourtm.tm_hour, yourtm.tm_min -= MINSPERHOUR;
- while (yourtm.tm_min < 0)
- --yourtm.tm_hour, yourtm.tm_min += MINSPERHOUR;
- while (yourtm.tm_hour >= HOURSPERDAY)
- ++yourtm.tm_mday, yourtm.tm_hour -= HOURSPERDAY;
- while (yourtm.tm_hour < 0)
- --yourtm.tm_mday, yourtm.tm_hour += HOURSPERDAY;
- while (yourtm.tm_mday > 31) /* trust me [kre] */
- ++yourtm.tm_mon, yourtm.tm_mday -= 31;
- while (yourtm.tm_mday <= 0)
- --yourtm.tm_mon, yourtm.tm_mday += 31;
- while (yourtm.tm_mon >= MONSPERYEAR)
- ++yourtm.tm_year, yourtm.tm_mon -= MONSPERYEAR;
- while (yourtm.tm_mon < 0)
- --yourtm.tm_year, yourtm.tm_mon += MONSPERYEAR;
- /*
- ** Calculate the number of magnitude bits in a time_t
- ** (this works regardless of whether time_t is
- ** signed or unsigned, though lint complains if unsigned).
- */
- for (bits = 0, t = 1; t > 0; ++bits, t <<= 1)
- ;
- /*
- ** If time_t is signed, then 0 is the median value,
- ** if time_t is unsigned, then 1 << bits is median.
- */
- t = (t < 0) ? 0 : ((time_t) 1 << bits);
- for ( ; ; ) {
- mytm = (funcp == offtime) ?
- *((*funcp)(&t, offset)) : *((*funcp)(&t));
- if ((direction = (mytm.tm_year - yourtm.tm_year)) == 0 &&
- (direction = (mytm.tm_mon - yourtm.tm_mon)) == 0 &&
- (direction = (mytm.tm_mday - yourtm.tm_mday)) == 0 &&
- (direction = (mytm.tm_hour - yourtm.tm_hour)) == 0 &&
- (direction = (mytm.tm_min - yourtm.tm_min)) == 0)
- direction = mytm.tm_sec - yourtm.tm_sec;
- if (direction == 0) {
- *timeptr = mytm;
- return t;
- }
- if (bits-- < 0) {
- *timeptr = yourtm; /* restore "original" value */
- if (yourtm.tm_mday == 31) {
- timeptr->tm_mday = 1;
- ++(timeptr->tm_mon);
- t = timemk(timeptr, funcp, offset);
- if (t != WRONG)
- return t;
- *timeptr = yourtm;
- } else if (yourtm.tm_mon == TM_FEBRUARY &&
- yourtm.tm_mday > 28) {
- timeptr->tm_mday -= 28;
- ++(timeptr->tm_mon);
- t = timemk(timeptr, funcp, offset);
- if (t != WRONG)
- return t;
- *timeptr = yourtm;
- }
- return WRONG;
- }
- if (bits < 0)
- --t;
- else if (direction > 0)
- t -= (time_t) 1 << bits;
- else t += (time_t) 1 << bits;
- }
- }
-
- time_t
- timelocal(timeptr)
- const struct tm * timeptr;
- {
- return timemk(timeptr, localtime, 0L);
- }
-
- time_t
- timegm(timeptr)
- const struct tm * timeptr;
- {
- return timemk(timeptr, gmtime, 0L);
- }
-
- time_t
- timeoff(timeptr, offset)
- const struct tm * timeptr;
- long offset;
- {
- return timemk(timeptr, offtime, offset);
- }
-
- #endif /* defined STD_INSPIRED */
- End of timemk.c
- echo 'scheck.c' 1>&2
- cat >'scheck.c' <<'End of scheck.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)scheck.c 8.8";
- #endif /* !defined lint */
- #endif /* !defined NOID */
-
- /*LINTLIBRARY*/
-
- #include "stdio.h"
- #include "ctype.h"
- #include "string.h"
- #include "stdlib.h"
- #include "nonstd.h"
-
- extern char * imalloc P((int n));
- extern void ifree P((char * p));
-
- char *
- scheck(string, format)
- const char * string;
- char * format;
- {
- register char * fbuf;
- register const char * fp;
- register char * tp;
- register int c;
- register char * result;
- char dummy;
-
- result = "";
- if (string == NULL || format == NULL)
- return result;
- fbuf = imalloc(2 * strlen(format) + 4);
- if (fbuf == NULL)
- return result;
- fp = format;
- tp = fbuf;
- while ((*tp++ = c = *fp++) != '\0') {
- if (c != '%')
- continue;
- if (*fp == '%') {
- *tp++ = *fp++;
- continue;
- }
- *tp++ = '*';
- if (*fp == '*')
- ++fp;
- while (isascii(*fp) && isdigit(*fp))
- *tp++ = *fp++;
- if (*fp == 'l' || *fp == 'h')
- *tp++ = *fp++;
- else if (*fp == '[')
- do *tp++ = *fp++;
- while (*fp != '\0' && *fp != ']');
- if ((*tp++ = *fp++) == '\0')
- break;
- }
- *(tp - 1) = '%';
- *tp++ = 'c';
- *tp = '\0';
- if (sscanf(string, fbuf, &dummy) != 1)
- result = format;
- ifree(fbuf);
- return result;
- }
- End of scheck.c
- echo 'ialloc.c' 1>&2
- cat >'ialloc.c' <<'End of ialloc.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)ialloc.c 8.17";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #include "string.h"
- #include "stdlib.h"
- #include "nonstd.h"
-
- #ifdef MAL
- #define NULLMAL(x) ((x) == NULL || (x) == MAL)
- #else /* !defined MAL */
- #define NULLMAL(x) ((x) == NULL)
- #endif /* !defined MAL */
-
- #define nonzero(n) (((n) == 0) ? 1 : (n))
-
- char * icalloc P((int nelem, int elsize));
- char * icatalloc P((char * old, const char * new));
- char * icpyalloc P((const char * string));
- char * imalloc P((int n));
- char * irealloc P((char * pointer, int size));
- void ifree P((char * pointer));
-
- char *
- imalloc(n)
- {
- #ifdef MAL
- register char * result;
-
- result = malloc((alloc_size_t) nonzero(n));
- return NULLMAL(result) ? NULL : result;
- #else /* !defined MAL */
- return malloc((alloc_size_t) nonzero(n));
- #endif /* !defined MAL */
- }
-
- char *
- icalloc(nelem, elsize)
- {
- if (nelem == 0 || elsize == 0)
- nelem = elsize = 1;
- return calloc((alloc_size_t) nelem, (alloc_size_t) elsize);
- }
-
- char *
- irealloc(pointer, size)
- char * pointer;
- {
- if (NULLMAL(pointer))
- return imalloc(size);
- return realloc((genericptr_t) pointer, (alloc_size_t) nonzero(size));
- }
-
- char *
- icatalloc(old, new)
- char * old;
- const char * new;
- {
- register char * result;
- register oldsize, newsize;
-
- newsize = NULLMAL(new) ? 0 : strlen(new);
- if (NULLMAL(old))
- oldsize = 0;
- else if (newsize == 0)
- return old;
- else oldsize = strlen(old);
- if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
- if (!NULLMAL(new))
- (void) strcpy(result + oldsize, new);
- return result;
- }
-
- char *
- icpyalloc(string)
- const char * string;
- {
- return icatalloc((char *) NULL, string);
- }
-
- void
- ifree(p)
- char * p;
- {
- if (!NULLMAL(p))
- (void) free(p);
- }
-
- void
- icfree(p)
- char * p;
- {
- if (!NULLMAL(p))
- (void) free(p);
- }
- End of ialloc.c
- echo 'emkdir.c' 1>&2
- cat >'emkdir.c' <<'End of emkdir.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)emkdir.c 8.15";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #include "stdio.h" /* for sprintf prototype */
- #include "stdlib.h" /* for system prototype */
- #include "nonstd.h"
-
- extern char * imalloc P((int n));
- extern void ifree P((char * p));
-
- static char *
- quoted(name)
- register const char * name;
- {
- register char * result;
- register char * cp;
- register int c;
-
- if (name == NULL)
- name = "";
- result = imalloc(4 * strlen(name) + 3);
- if (result == NULL)
- return NULL;
- cp = result;
- #ifdef unix
- *cp++ = '\'';
- while ((c = *name++) != '\0')
- if (c == '\'') {
- *cp++ = c;
- *cp++ = '\\';
- *cp++ = c;
- *cp++ = c;
- } else *cp++ = c;
- *cp++ = '\'';
- #else /* !defined unix */
- while ((c = *name++) != '\0')
- if (c == '/')
- *cp++ = '\\';
- else *cp++ = c;
- #endif /* !defined unix */
- *cp = '\0';
- return result;
- }
-
- emkdir(name, mode)
- const char * name;
- {
- register int result;
- register const char * format;
- register char * command;
- register char * qname;
-
- if ((qname = quoted(name)) == NULL)
- return -1;
- #ifdef unix
- format = "mkdir 2>&- %s && chmod 2>&- %o %s";
- #else /* !defined unix */
- format = "mkdir %s";
- #endif /* !defined unix */
- command = imalloc(strlen(format) + 2 * strlen(qname) + 20 + 1);
- if (command == NULL) {
- ifree(qname);
- return -1;
- }
- (void) sprintf(command, format, qname, mode, qname);
- ifree(qname);
- result = system(command);
- ifree(command);
- return (result == 0) ? 0 : -1;
- }
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of emkdir.c
- echo 'getopt.c' 1>&2
- cat >'getopt.c' <<'End of getopt.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)getopt.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #include "string.h"
-
- #ifndef strchr
- #define index strchr
- #endif /* !defined strchr */
-
- #include <stdio.h>
-
- /*
- * get option letter from argument vector
- */
- int opterr = 1, /* useless, never set or used */
- optind = 1, /* index into parent argv vector */
- optopt; /* character checked for validity */
- char *optarg; /* argument associated with option */
-
- #define BADCH (int)'?'
- #define EMSG ""
- #define tell(s) fputs(*nargv,stderr);fputs(s,stderr); \
- fputc(optopt,stderr);fputc('\n',stderr);return(BADCH);
-
- getopt(nargc,nargv,ostr)
- int nargc;
- char **nargv,
- *ostr;
- {
- static char *place = EMSG; /* option letter processing */
- register char *oli; /* option letter list index */
- char *index();
-
- if(!*place) { /* update scanning pointer */
- if(optind >= nargc || *(place = nargv[optind]) != '-' || !*++place) return(EOF);
- if (*place == '-') { /* found "--" */
- ++optind;
- return(EOF);
- }
- } /* option letter okay? */
- if ((optopt = (int)*place++) == (int)':' || !(oli = index(ostr,optopt))) {
- if(!*place) ++optind;
- tell(": illegal option -- ");
- }
- if (*++oli != ':') { /* don't need argument */
- optarg = NULL;
- if (!*place) ++optind;
- }
- else { /* need an argument */
- if (*place) optarg = place; /* no white space */
- else if (nargc <= ++optind) { /* no arg */
- place = EMSG;
- tell(": option requires an argument -- ");
- }
- else optarg = nargv[optind]; /* white space */
- place = EMSG;
- ++optind;
- }
- return(optopt); /* dump back option letter */
- }
- End of getopt.c
- echo 'link.c' 1>&2
- cat >'link.c' <<'End of link.c'
- #ifndef lint
- #ifndef NOID
- static char elsieid[] = "@(#)link.c 4.1";
- #endif /* !defined NOID */
- #endif /* !defined lint */
-
- /*LINTLIBRARY*/
-
- #ifndef HAVELINK
- #ifndef WANTLINK
- #ifndef unix
- #define WANTLINK
- #endif /* !defined unix */
- #endif /* !defined WANTLINK */
- #endif /* !defined HAVELINK */
-
- #ifdef WANTLINK
-
- /*
- ** Fake link by copying.
- */
-
- #include "stdio.h"
- #include "nonstd.h"
-
- link(fromname, toname)
- const char * fromname;
- const char * toname;
- {
- register FILE * fromfp;
- register FILE * tofp;
- register int c;
- register int ok;
-
- if ((fromfp = fopen(fromname, "rb")) == NULL)
- return -1;
- if ((tofp = fopen(toname, "wb")) == NULL) {
- (void) fclose(fromfp);
- return -1;
- }
- while ((c = getc(fromfp)) != EOF) {
- if (ferror(fromfp))
- break;
- (void) putc(c, tofp);
- if (ferror(tofp))
- break;
- }
- ok = !ferror(fromfp) && feof(fromfp) && !ferror(tofp);
- ok = fclose(fromfp) == 0 && ok;
- ok = fclose(tofp) == 0 && ok;
- return ok ? 0 : -1;
- }
-
- #endif /* defined WANTLINK */
-
- /*
- ** UNIX is a registered trademark of AT&T.
- */
- End of link.c
- exit
-
-