diff options
Diffstat (limited to 'time/zic.c')
| -rw-r--r-- | time/zic.c | 213 |
1 files changed, 159 insertions, 54 deletions
diff --git a/time/zic.c b/time/zic.c index 756b7eb84a..0cec89369c 100644 --- a/time/zic.c +++ b/time/zic.c @@ -1,6 +1,6 @@ #ifndef lint #ifndef NOID -static char elsieid[] = "@(#)zic.c 7.62"; +static char elsieid[] = "@(#)zic.c 7.77"; #endif /* !defined NOID */ #endif /* !defined lint */ @@ -335,8 +335,10 @@ static const int len_years[2] = { DAYSPERNYEAR, DAYSPERLYEAR }; -static time_t ats[TZ_MAX_TIMES]; -static unsigned char types[TZ_MAX_TIMES]; +static struct attype { + time_t at; + unsigned char type; +} attypes[TZ_MAX_TIMES]; static long gmtoffs[TZ_MAX_TYPES]; static char isdsts[TZ_MAX_TYPES]; static unsigned char abbrinds[TZ_MAX_TYPES]; @@ -427,11 +429,22 @@ const char * const string; } static void +warning(string) +const char * const string; +{ + char * cp; + + cp = ecpyalloc("warning: "); + cp = ecatalloc(cp, string); + error(string); + ifree(cp); + --errors; +} + +static void usage P((void)) { - (void) fprintf(stderr, _("%s: usage is %s \ -[ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\ -\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), + (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), progname, progname); (void) exit(EXIT_FAILURE); } @@ -622,8 +635,7 @@ const char * const tofile; */ #define MAX_BITS_IN_FILE 32 -#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? \ - TYPE_BIT(time_t) : MAX_BITS_IN_FILE) +#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) static void setboundaries P((void)) @@ -681,11 +693,37 @@ associate P((void)) register struct zone * zp; register struct rule * rp; register int base, out; - register int i; + register int i, j; - if (nrules != 0) + if (nrules != 0) { (void) qsort((void *) rules, (size_t) nrules, (size_t) 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; @@ -1010,8 +1048,7 @@ const int iscont; 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")); + error(_("Zone continuation line end time is not after end time of previous line")); return FALSE; } } @@ -1319,6 +1356,18 @@ FILE * const fp; (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); } +static int +atcomp(avp, bvp) +void * avp; +void * bvp; +{ + if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) + return -1; + else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) + return 1; + else return 0; +} + static void writezone(name) const char * const name; @@ -1327,7 +1376,50 @@ const char * const name; register int i, j; static char * fullname; static struct tzhead tzh; + time_t ats[TZ_MAX_TIMES]; + unsigned char types[TZ_MAX_TIMES]; + /* + ** Sort. + */ + if (timecnt > 1) + (void) qsort((void *) attypes, (size_t) timecnt, + (size_t) sizeof *attypes, atcomp); + /* + ** Optimize. + */ + { + int fromi; + int toi; + + toi = 0; + fromi = 0; + if (isdsts[0] == 0) + while (attypes[fromi].type == 0) + ++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; + } fullname = erealloc(fullname, (int) (strlen(directory) + 1 + strlen(name) + 1)); (void) sprintf(fullname, "%s/%s", directory, name); @@ -1347,8 +1439,7 @@ const char * const name; convert(eitol(timecnt), tzh.tzh_timecnt); convert(eitol(typecnt), tzh.tzh_typecnt); convert(eitol(charcnt), tzh.tzh_charcnt); -#define DO(field) (void) fwrite((void *) tzh.field, \ - (size_t) sizeof tzh.field, (size_t) 1, fp) +#define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) DO(tzh_reserved); DO(tzh_ttisgmtcnt); DO(tzh_ttisstdcnt); @@ -1440,7 +1531,6 @@ const int zonecount; register long stdoff; register int year; register long startoff; - register int startisdst; register int startttisstd; register int startttisgmt; register int type; @@ -1448,7 +1538,6 @@ const int zonecount; INITIALIZE(untiltime); INITIALIZE(starttime); - INITIALIZE(startoff); /* ** Now. . .finally. . .generate some useful data! */ @@ -1473,7 +1562,8 @@ const int zonecount; continue; gmtoff = zp->z_gmtoff; eat(zp->z_filename, zp->z_linenum); - startisdst = -1; + *startbuf = '\0'; + startoff = zp->z_gmtoff; if (zp->z_nrules == 0) { stdoff = zp->z_stdoff; doabbr(startbuf, zp->z_format, @@ -1481,8 +1571,10 @@ const int zonecount; type = addtype(oadd(zp->z_gmtoff, stdoff), startbuf, stdoff != 0, startttisstd, startttisgmt); - if (usestart) + if (usestart) { addtt(starttime, type); + usestart = FALSE; + } else if (stdoff != 0) addtt(min_time, type); } else for (year = min_year; year <= max_year; ++year) { @@ -1553,36 +1645,25 @@ const int zonecount; rp->r_todo = FALSE; if (useuntil && ktime >= untiltime) break; + stdoff = rp->r_stdoff; + if (usestart && ktime == starttime) + usestart = FALSE; if (usestart) { - if (ktime < starttime) { - stdoff = rp->r_stdoff; - startoff = oadd(zp->z_gmtoff, - rp->r_stdoff); - doabbr(startbuf, zp->z_format, - rp->r_abbrvar, - rp->r_stdoff != 0); - startisdst = rp->r_stdoff != 0; - continue; - } - usestart = FALSE; - if (ktime != starttime) { - if (startisdst < 0 && - zp->z_gmtoff != - (zp - 1)->z_gmtoff) { - type = (timecnt == 0) ? 0 : - types[timecnt - 1]; - startoff = oadd(gmtoffs[type], - -(zp - 1)->z_gmtoff); - startisdst = startoff != 0; - startoff = oadd(startoff, - zp->z_gmtoff); - (void) strcpy(startbuf, - &chars[abbrinds[type]]); + if (ktime < starttime) { + startoff = oadd(zp->z_gmtoff, + stdoff); + doabbr(startbuf, zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != 0); + continue; + } + if (*startbuf == '\0' && + startoff == oadd(zp->z_gmtoff, + stdoff)) { + doabbr(startbuf, zp->z_format, + rp->r_abbrvar, + rp->r_stdoff != 0); } - if (startisdst >= 0) -addtt(starttime, addtype(startoff, startbuf, startisdst, startttisstd, - startttisgmt)); - } } eats(zp->z_filename, zp->z_linenum, rp->r_filename, rp->r_linenum); @@ -1592,18 +1673,34 @@ addtt(starttime, addtype(startoff, startbuf, startisdst, startttisstd, type = addtype(offset, buf, rp->r_stdoff != 0, rp->r_todisstd, rp->r_todisgmt); addtt(ktime, type); - stdoff = rp->r_stdoff; } } + 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 abbrevation to use just after until time")); + else addtt(starttime, + addtype(startoff, startbuf, + startoff != zp->z_gmtoff, + startttisstd, + startttisgmt)); + } /* ** Now we may get to set starttime for the next zone line. */ if (useuntil) { - starttime = tadd(zp->z_untiltime, -gmtoff); 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); } } writezone(zpfirst->z_name); @@ -1614,16 +1711,12 @@ addtt(starttime, type) const time_t starttime; const int type; { - if (timecnt != 0 && type == types[timecnt - 1]) - return; /* easy enough! */ - if (timecnt == 0 && type == 0 && isdsts[0] == 0) - return; /* handled by default rule */ if (timecnt >= TZ_MAX_TIMES) { error(_("too many transitions?!")); (void) exit(EXIT_FAILURE); } - ats[timecnt] = starttime; - types[timecnt] = type; + attypes[timecnt].at = starttime; + attypes[timecnt].type = type; ++timecnt; } @@ -1637,6 +1730,18 @@ const int ttisgmt; { register int i, j; + if (isdst != TRUE && isdst != FALSE) { + error(_("internal error - addtype called with bad isdst")); + (void) exit(EXIT_FAILURE); + } + if (ttisstd != TRUE && ttisstd != FALSE) { + error(_("internal error - addtype called with bad ttisstd")); + (void) exit(EXIT_FAILURE); + } + if (ttisgmt != TRUE && ttisgmt != FALSE) { + error(_("internal error - addtype called with bad ttisgmt")); + (void) exit(EXIT_FAILURE); + } /* ** See if there's already an entry for this zone type. ** If so, just return its index. |