1 #ifndef lint 2 #ifndef NOID 3 static char elsieid[] = "@(#)strftime.c 8.1"; 4 /* 5 ** Based on the UCB version with the ID appearing below. 6 ** This is ANSIish only when "multibyte character == plain character". 7 */ 8 #endif /* !defined NOID */ 9 #endif /* !defined lint */ 10 11 #include "private.h" 12 13 /* 14 ** Copyright (c) 1989 The Regents of the University of California. 15 ** All rights reserved. 16 ** 17 ** Redistribution and use in source and binary forms are permitted 18 ** provided that the above copyright notice and this paragraph are 19 ** duplicated in all such forms and that any documentation, 20 ** advertising materials, and other materials related to such 21 ** distribution and use acknowledge that the software was developed 22 ** by the University of California, Berkeley. The name of the 23 ** University may not be used to endorse or promote products derived 24 ** from this software without specific prior written permission. 25 ** THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 26 ** IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 27 ** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 28 */ 29 30 #ifndef LIBC_SCCS 31 #ifndef lint 32 static const char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89"; 33 #endif /* !defined lint */ 34 #endif /* !defined LIBC_SCCS */ 35 36 #include "tzfile.h" 37 #include "fcntl.h" 38 #include "locale.h" 39 #include <ctype.h> 40 #include <time64.h> 41 #include <bionic_time.h> /* for strftime_tz */ 42 43 /* struct lc_time_T is now defined as strftime_locale 44 * in <time.h> 45 */ 46 #if 1 47 #define lc_time_T strftime_locale 48 #else 49 struct lc_time_T { 50 const char * mon[MONSPERYEAR]; 51 const char * month[MONSPERYEAR]; 52 const char * wday[DAYSPERWEEK]; 53 const char * weekday[DAYSPERWEEK]; 54 const char * X_fmt; 55 const char * x_fmt; 56 const char * c_fmt; 57 const char * am; 58 const char * pm; 59 const char * date_fmt; 60 }; 61 #endif 62 63 #define Locale (&C_time_locale) 64 65 static const struct lc_time_T C_time_locale = { 66 { 67 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 68 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 69 }, { 70 "January", "February", "March", "April", "May", "June", 71 "July", "August", "September", "October", "November", "December" 72 }, { 73 "January", "February", "March", "April", "May", "June", 74 "July", "August", "September", "October", "November", "December" 75 }, { 76 "Sun", "Mon", "Tue", "Wed", 77 "Thu", "Fri", "Sat" 78 }, { 79 "Sunday", "Monday", "Tuesday", "Wednesday", 80 "Thursday", "Friday", "Saturday" 81 }, 82 83 /* X_fmt */ 84 "%H:%M:%S", 85 86 /* 87 ** x_fmt 88 ** C99 requires this format. 89 ** Using just numbers (as here) makes Quakers happier; 90 ** it's also compatible with SVR4. 91 */ 92 "%m/%d/%y", 93 94 /* 95 ** c_fmt 96 ** C99 requires this format. 97 ** Previously this code used "%D %X", but we now conform to C99. 98 ** Note that 99 ** "%a %b %d %H:%M:%S %Y" 100 ** is used by Solaris 2.3. 101 */ 102 "%a %b %e %T %Y", 103 104 /* am */ 105 "AM", 106 107 /* pm */ 108 "PM", 109 110 /* date_fmt */ 111 "%a %b %e %H:%M:%S %Z %Y" 112 }; 113 114 static char * _add(const char *, char *, const char *, int); 115 static char * _conv(int, const char *, char *, const char *); 116 static char * _fmt(const char *, const struct tm *, char *, const char *, 117 int *, const struct strftime_locale*); 118 static char * _yconv(int, int, int, int, char *, const char *, int); 119 static char * getformat(int, char *, char *, char *, char *); 120 121 extern char * tzname[]; 122 123 #ifndef YEAR_2000_NAME 124 #define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS" 125 #endif /* !defined YEAR_2000_NAME */ 126 127 #define IN_NONE 0 128 #define IN_SOME 1 129 #define IN_THIS 2 130 #define IN_ALL 3 131 132 #define FORCE_LOWER_CASE 0x100 133 134 size_t 135 strftime(s, maxsize, format, t) 136 char * const s; 137 const size_t maxsize; 138 const char * const format; 139 const struct tm * const t; 140 { 141 return strftime_tz(s, maxsize, format, t, Locale); 142 } 143 144 size_t 145 strftime_tz(s, maxsize, format, t, locale) 146 char * const s; 147 const size_t maxsize; 148 const char * const format; 149 const struct tm * const t; 150 const struct strftime_locale *locale; 151 { 152 char * p; 153 int warn; 154 155 tzset(); 156 warn = IN_NONE; 157 p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn, locale); 158 #if 0 /* ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */ 159 if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) { 160 (void) fprintf(stderr, "\n"); 161 if (format == NULL) 162 (void) fprintf(stderr, "NULL strftime format "); 163 else (void) fprintf(stderr, "strftime format \"%s\" ", 164 format); 165 (void) fprintf(stderr, "yields only two digits of years in "); 166 if (warn == IN_SOME) 167 (void) fprintf(stderr, "some locales"); 168 else if (warn == IN_THIS) 169 (void) fprintf(stderr, "the current locale"); 170 else (void) fprintf(stderr, "all locales"); 171 (void) fprintf(stderr, "\n"); 172 } 173 #endif /* !defined NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */ 174 if (p == s + maxsize) 175 return 0; 176 *p = '\0'; 177 return p - s; 178 } 179 180 static char *getformat(int modifier, char *normal, char *underscore, 181 char *dash, char *zero) { 182 switch (modifier) { 183 case '_': 184 return underscore; 185 186 case '-': 187 return dash; 188 189 case '0': 190 return zero; 191 } 192 193 return normal; 194 } 195 196 static char * 197 _fmt(format, t, pt, ptlim, warnp, locale) 198 const char * format; 199 const struct tm * const t; 200 char * pt; 201 const char * const ptlim; 202 int * warnp; 203 const struct strftime_locale* locale; 204 { 205 for ( ; *format; ++format) { 206 if (*format == '%') { 207 int modifier = 0; 208 label: 209 switch (*++format) { 210 case '\0': 211 --format; 212 break; 213 case 'A': 214 pt = _add((t->tm_wday < 0 || 215 t->tm_wday >= DAYSPERWEEK) ? 216 "?" : locale->weekday[t->tm_wday], 217 pt, ptlim, modifier); 218 continue; 219 case 'a': 220 pt = _add((t->tm_wday < 0 || 221 t->tm_wday >= DAYSPERWEEK) ? 222 "?" : locale->wday[t->tm_wday], 223 pt, ptlim, modifier); 224 continue; 225 case 'B': 226 if (modifier == '-') { 227 pt = _add((t->tm_mon < 0 || 228 t->tm_mon >= MONSPERYEAR) ? 229 "?" : locale->standalone_month[t->tm_mon], 230 pt, ptlim, modifier); 231 } else { 232 pt = _add((t->tm_mon < 0 || 233 t->tm_mon >= MONSPERYEAR) ? 234 "?" : locale->month[t->tm_mon], 235 pt, ptlim, modifier); 236 } 237 continue; 238 case 'b': 239 case 'h': 240 pt = _add((t->tm_mon < 0 || 241 t->tm_mon >= MONSPERYEAR) ? 242 "?" : locale->mon[t->tm_mon], 243 pt, ptlim, modifier); 244 continue; 245 case 'C': 246 /* 247 ** %C used to do a... 248 ** _fmt("%a %b %e %X %Y", t); 249 ** ...whereas now POSIX 1003.2 calls for 250 ** something completely different. 251 ** (ado, 1993-05-24) 252 */ 253 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0, 254 pt, ptlim, modifier); 255 continue; 256 case 'c': 257 { 258 int warn2 = IN_SOME; 259 260 pt = _fmt(locale->c_fmt, t, pt, ptlim, warnp, locale); 261 if (warn2 == IN_ALL) 262 warn2 = IN_THIS; 263 if (warn2 > *warnp) 264 *warnp = warn2; 265 } 266 continue; 267 case 'D': 268 pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp, locale); 269 continue; 270 case 'd': 271 pt = _conv(t->tm_mday, 272 getformat(modifier, "%02d", 273 "%2d", "%d", "%02d"), 274 pt, ptlim); 275 continue; 276 case 'E': 277 case 'O': 278 /* 279 ** C99 locale modifiers. 280 ** The sequences 281 ** %Ec %EC %Ex %EX %Ey %EY 282 ** %Od %oe %OH %OI %Om %OM 283 ** %OS %Ou %OU %OV %Ow %OW %Oy 284 ** are supposed to provide alternate 285 ** representations. 286 */ 287 goto label; 288 case '_': 289 case '-': 290 case '0': 291 case '^': 292 case '#': 293 modifier = *format; 294 goto label; 295 case 'e': 296 pt = _conv(t->tm_mday, 297 getformat(modifier, "%2d", 298 "%2d", "%d", "%02d"), 299 pt, ptlim); 300 continue; 301 case 'F': 302 pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp, locale); 303 continue; 304 case 'H': 305 pt = _conv(t->tm_hour, 306 getformat(modifier, "%02d", 307 "%2d", "%d", "%02d"), 308 pt, ptlim); 309 continue; 310 case 'I': 311 pt = _conv((t->tm_hour % 12) ? 312 (t->tm_hour % 12) : 12, 313 getformat(modifier, "%02d", 314 "%2d", "%d", "%02d"), 315 pt, ptlim); 316 continue; 317 case 'j': 318 pt = _conv(t->tm_yday + 1, 319 getformat(modifier, "%03d", "%3d", "%d", "%03d"), 320 pt, ptlim); 321 continue; 322 case 'k': 323 /* 324 ** This used to be... 325 ** _conv(t->tm_hour % 12 ? 326 ** t->tm_hour % 12 : 12, 2, ' '); 327 ** ...and has been changed to the below to 328 ** match SunOS 4.1.1 and Arnold Robbins' 329 ** strftime version 3.0. That is, "%k" and 330 ** "%l" have been swapped. 331 ** (ado, 1993-05-24) 332 */ 333 pt = _conv(t->tm_hour, 334 getformat(modifier, "%2d", 335 "%2d", "%d", "%02d"), 336 pt, ptlim); 337 continue; 338 #ifdef KITCHEN_SINK 339 case 'K': 340 /* 341 ** After all this time, still unclaimed! 342 */ 343 pt = _add("kitchen sink", pt, ptlim, modifier); 344 continue; 345 #endif /* defined KITCHEN_SINK */ 346 case 'l': 347 /* 348 ** This used to be... 349 ** _conv(t->tm_hour, 2, ' '); 350 ** ...and has been changed to the below to 351 ** match SunOS 4.1.1 and Arnold Robbin's 352 ** strftime version 3.0. That is, "%k" and 353 ** "%l" have been swapped. 354 ** (ado, 1993-05-24) 355 */ 356 pt = _conv((t->tm_hour % 12) ? 357 (t->tm_hour % 12) : 12, 358 getformat(modifier, "%2d", 359 "%2d", "%d", "%02d"), 360 pt, ptlim); 361 continue; 362 case 'M': 363 pt = _conv(t->tm_min, 364 getformat(modifier, "%02d", 365 "%2d", "%d", "%02d"), 366 pt, ptlim); 367 continue; 368 case 'm': 369 pt = _conv(t->tm_mon + 1, 370 getformat(modifier, "%02d", 371 "%2d", "%d", "%02d"), 372 pt, ptlim); 373 continue; 374 case 'n': 375 pt = _add("\n", pt, ptlim, modifier); 376 continue; 377 case 'p': 378 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ? 379 locale->pm : 380 locale->am, 381 pt, ptlim, modifier); 382 continue; 383 case 'P': 384 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ? 385 locale->pm : 386 locale->am, 387 pt, ptlim, FORCE_LOWER_CASE); 388 continue; 389 case 'R': 390 pt = _fmt("%H:%M", t, pt, ptlim, warnp, locale); 391 continue; 392 case 'r': 393 pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp, locale); 394 continue; 395 case 'S': 396 pt = _conv(t->tm_sec, 397 getformat(modifier, "%02d", 398 "%2d", "%d", "%02d"), 399 pt, ptlim); 400 continue; 401 case 's': 402 { 403 struct tm tm; 404 char buf[INT_STRLEN_MAXIMUM( 405 time64_t) + 1]; 406 time64_t mkt; 407 408 tm = *t; 409 mkt = mktime64(&tm); 410 if (TYPE_SIGNED(time64_t)) 411 (void) snprintf(buf, sizeof(buf), "%lld", 412 (long long) mkt); 413 else (void) snprintf(buf, sizeof(buf), "%llu", 414 (unsigned long long) mkt); 415 pt = _add(buf, pt, ptlim, modifier); 416 } 417 continue; 418 case 'T': 419 pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp, locale); 420 continue; 421 case 't': 422 pt = _add("\t", pt, ptlim, modifier); 423 continue; 424 case 'U': 425 pt = _conv((t->tm_yday + DAYSPERWEEK - 426 t->tm_wday) / DAYSPERWEEK, 427 getformat(modifier, "%02d", 428 "%2d", "%d", "%02d"), 429 pt, ptlim); 430 continue; 431 case 'u': 432 /* 433 ** From Arnold Robbins' strftime version 3.0: 434 ** "ISO 8601: Weekday as a decimal number 435 ** [1 (Monday) - 7]" 436 ** (ado, 1993-05-24) 437 */ 438 pt = _conv((t->tm_wday == 0) ? 439 DAYSPERWEEK : t->tm_wday, "%d", pt, ptlim); 440 continue; 441 case 'V': /* ISO 8601 week number */ 442 case 'G': /* ISO 8601 year (four digits) */ 443 case 'g': /* ISO 8601 year (two digits) */ 444 /* 445 ** From Arnold Robbins' strftime version 3.0: "the week number of the 446 ** year (the first Monday as the first day of week 1) as a decimal number 447 ** (01-53)." 448 ** (ado, 1993-05-24) 449 ** 450 ** From "http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html" by Markus Kuhn: 451 ** "Week 01 of a year is per definition the first week which has the 452 ** Thursday in this year, which is equivalent to the week which contains 453 ** the fourth day of January. In other words, the first week of a new year 454 ** is the week which has the majority of its days in the new year. Week 01 455 ** might also contain days from the previous year and the week before week 456 ** 01 of a year is the last week (52 or 53) of the previous year even if 457 ** it contains days from the new year. A week starts with Monday (day 1) 458 ** and ends with Sunday (day 7). For example, the first week of the year 459 ** 1997 lasts from 1996-12-30 to 1997-01-05..." 460 ** (ado, 1996-01-02) 461 */ 462 { 463 int year; 464 int base; 465 int yday; 466 int wday; 467 int w; 468 469 year = t->tm_year; 470 base = TM_YEAR_BASE; 471 yday = t->tm_yday; 472 wday = t->tm_wday; 473 for ( ; ; ) { 474 int len; 475 int bot; 476 int top; 477 478 len = isleap_sum(year, base) ? 479 DAYSPERLYEAR : 480 DAYSPERNYEAR; 481 /* 482 ** What yday (-3 ... 3) does 483 ** the ISO year begin on? 484 */ 485 bot = ((yday + 11 - wday) % 486 DAYSPERWEEK) - 3; 487 /* 488 ** What yday does the NEXT 489 ** ISO year begin on? 490 */ 491 top = bot - 492 (len % DAYSPERWEEK); 493 if (top < -3) 494 top += DAYSPERWEEK; 495 top += len; 496 if (yday >= top) { 497 ++base; 498 w = 1; 499 break; 500 } 501 if (yday >= bot) { 502 w = 1 + ((yday - bot) / 503 DAYSPERWEEK); 504 break; 505 } 506 --base; 507 yday += isleap_sum(year, base) ? 508 DAYSPERLYEAR : 509 DAYSPERNYEAR; 510 } 511 #ifdef XPG4_1994_04_09 512 if ((w == 52 && 513 t->tm_mon == TM_JANUARY) || 514 (w == 1 && 515 t->tm_mon == TM_DECEMBER)) 516 w = 53; 517 #endif /* defined XPG4_1994_04_09 */ 518 if (*format == 'V') 519 pt = _conv(w, 520 getformat(modifier, 521 "%02d", 522 "%2d", 523 "%d", 524 "%02d"), 525 pt, ptlim); 526 else if (*format == 'g') { 527 *warnp = IN_ALL; 528 pt = _yconv(year, base, 0, 1, 529 pt, ptlim, modifier); 530 } else pt = _yconv(year, base, 1, 1, 531 pt, ptlim, modifier); 532 } 533 continue; 534 case 'v': 535 /* 536 ** From Arnold Robbins' strftime version 3.0: 537 ** "date as dd-bbb-YYYY" 538 ** (ado, 1993-05-24) 539 */ 540 pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp, locale); 541 continue; 542 case 'W': 543 pt = _conv((t->tm_yday + DAYSPERWEEK - 544 (t->tm_wday ? 545 (t->tm_wday - 1) : 546 (DAYSPERWEEK - 1))) / DAYSPERWEEK, 547 getformat(modifier, "%02d", 548 "%2d", "%d", "%02d"), 549 pt, ptlim); 550 continue; 551 case 'w': 552 pt = _conv(t->tm_wday, "%d", pt, ptlim); 553 continue; 554 case 'X': 555 pt = _fmt(locale->X_fmt, t, pt, ptlim, warnp, locale); 556 continue; 557 case 'x': 558 { 559 int warn2 = IN_SOME; 560 561 pt = _fmt(locale->x_fmt, t, pt, ptlim, &warn2, locale); 562 if (warn2 == IN_ALL) 563 warn2 = IN_THIS; 564 if (warn2 > *warnp) 565 *warnp = warn2; 566 } 567 continue; 568 case 'y': 569 *warnp = IN_ALL; 570 pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1, 571 pt, ptlim, modifier); 572 continue; 573 case 'Y': 574 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1, 575 pt, ptlim, modifier); 576 continue; 577 case 'Z': 578 #ifdef TM_ZONE 579 if (t->TM_ZONE != NULL) 580 pt = _add(t->TM_ZONE, pt, ptlim, 581 modifier); 582 else 583 #endif /* defined TM_ZONE */ 584 if (t->tm_isdst >= 0) 585 pt = _add(tzname[t->tm_isdst != 0], 586 pt, ptlim, modifier); 587 /* 588 ** C99 says that %Z must be replaced by the 589 ** empty string if the time zone is not 590 ** determinable. 591 */ 592 continue; 593 case 'z': 594 { 595 int diff; 596 char const * sign; 597 598 if (t->tm_isdst < 0) 599 continue; 600 #ifdef TM_GMTOFF 601 diff = t->TM_GMTOFF; 602 #else /* !defined TM_GMTOFF */ 603 /* 604 ** C99 says that the UTC offset must 605 ** be computed by looking only at 606 ** tm_isdst. This requirement is 607 ** incorrect, since it means the code 608 ** must rely on magic (in this case 609 ** altzone and timezone), and the 610 ** magic might not have the correct 611 ** offset. Doing things correctly is 612 ** tricky and requires disobeying C99; 613 ** see GNU C strftime for details. 614 ** For now, punt and conform to the 615 ** standard, even though it's incorrect. 616 ** 617 ** C99 says that %z must be replaced by the 618 ** empty string if the time zone is not 619 ** determinable, so output nothing if the 620 ** appropriate variables are not available. 621 */ 622 if (t->tm_isdst == 0) 623 #ifdef USG_COMPAT 624 diff = -timezone; 625 #else /* !defined USG_COMPAT */ 626 continue; 627 #endif /* !defined USG_COMPAT */ 628 else 629 #ifdef ALTZONE 630 diff = -altzone; 631 #else /* !defined ALTZONE */ 632 continue; 633 #endif /* !defined ALTZONE */ 634 #endif /* !defined TM_GMTOFF */ 635 if (diff < 0) { 636 sign = "-"; 637 diff = -diff; 638 } else sign = "+"; 639 pt = _add(sign, pt, ptlim, modifier); 640 diff /= SECSPERMIN; 641 diff = (diff / MINSPERHOUR) * 100 + 642 (diff % MINSPERHOUR); 643 pt = _conv(diff, 644 getformat(modifier, "%04d", 645 "%4d", "%d", "%04d"), 646 pt, ptlim); 647 } 648 continue; 649 case '+': 650 pt = _fmt(locale->date_fmt, t, pt, ptlim, 651 warnp, locale); 652 continue; 653 case '%': 654 /* 655 ** X311J/88-090 (4.12.3.5): if conversion char is 656 ** undefined, behavior is undefined. Print out the 657 ** character itself as printf(3) also does. 658 */ 659 default: 660 break; 661 } 662 } 663 if (pt == ptlim) 664 break; 665 *pt++ = *format; 666 } 667 return pt; 668 } 669 670 static char * 671 _conv(n, format, pt, ptlim) 672 const int n; 673 const char * const format; 674 char * const pt; 675 const char * const ptlim; 676 { 677 char buf[INT_STRLEN_MAXIMUM(int) + 1]; 678 679 (void) snprintf(buf, sizeof(buf), format, n); 680 return _add(buf, pt, ptlim, 0); 681 } 682 683 static char * 684 _add(str, pt, ptlim, modifier) 685 const char * str; 686 char * pt; 687 const char * const ptlim; 688 int modifier; 689 { 690 int c; 691 692 switch (modifier) { 693 case FORCE_LOWER_CASE: 694 while (pt < ptlim && (*pt = tolower(*str++)) != '\0') { 695 ++pt; 696 } 697 break; 698 699 case '^': 700 while (pt < ptlim && (*pt = toupper(*str++)) != '\0') { 701 ++pt; 702 } 703 break; 704 705 case '#': 706 while (pt < ptlim && (c = *str++) != '\0') { 707 if (isupper(c)) { 708 c = tolower(c); 709 } else if (islower(c)) { 710 c = toupper(c); 711 } 712 *pt = c; 713 ++pt; 714 } 715 716 break; 717 718 default: 719 while (pt < ptlim && (*pt = *str++) != '\0') { 720 ++pt; 721 } 722 } 723 724 return pt; 725 } 726 727 /* 728 ** POSIX and the C Standard are unclear or inconsistent about 729 ** what %C and %y do if the year is negative or exceeds 9999. 730 ** Use the convention that %C concatenated with %y yields the 731 ** same output as %Y, and that %Y contains at least 4 bytes, 732 ** with more only if necessary. 733 */ 734 735 static char * 736 _yconv(a, b, convert_top, convert_yy, pt, ptlim, modifier) 737 const int a; 738 const int b; 739 const int convert_top; 740 const int convert_yy; 741 char * pt; 742 const char * const ptlim; 743 int modifier; 744 { 745 register int lead; 746 register int trail; 747 748 #define DIVISOR 100 749 trail = a % DIVISOR + b % DIVISOR; 750 lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR; 751 trail %= DIVISOR; 752 if (trail < 0 && lead > 0) { 753 trail += DIVISOR; 754 --lead; 755 } else if (lead < 0 && trail > 0) { 756 trail -= DIVISOR; 757 ++lead; 758 } 759 if (convert_top) { 760 if (lead == 0 && trail < 0) 761 pt = _add("-0", pt, ptlim, modifier); 762 else pt = _conv(lead, getformat(modifier, "%02d", 763 "%2d", "%d", "%02d"), 764 pt, ptlim); 765 } 766 if (convert_yy) 767 pt = _conv(((trail < 0) ? -trail : trail), 768 getformat(modifier, "%02d", "%2d", "%d", "%02d"), 769 pt, ptlim); 770 return pt; 771 } 772
