+++ /dev/null
-/*
- * Powerdog Industries kindly requests feedback from anyone modifying
- * this function:
- *
- * Date: Thu, 05 Jun 1997 23:17:17 -0400
- * From: Kevin Ruddy <kevin.ruddy@powerdog.com>
- * To: James FitzGibbon <james@nexis.net>
- * Subject: Re: Use of your strptime(3) code (fwd)
- *
- * The reason for the "no mod" clause was so that modifications would
- * come back and we could integrate them and reissue so that a wider
- * audience could use it (thereby spreading the wealth). This has
- * made it possible to get strptime to work on many operating systems.
- * I'm not sure why that's "plain unacceptable" to the FreeBSD team.
- *
- * Anyway, you can change it to "with or without modification" as
- * you see fit. Enjoy.
- *
- * Kevin Ruddy
- * Powerdog Industries, Inc.
- */
-/*
- * Copyright (c) 1994 Powerdog Industries. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgement:
- * This product includes software developed by Powerdog Industries.
- * 4. The name of Powerdog Industries may not be used to endorse or
- * promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE POWERDOG INDUSTRIES BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifdef LIBC_RCS
-static const char rcsid[] =
- "$FreeBSD: src/lib/libc/stdtime/strptime.c,v 1.17.2.2 2001/07/31 00:06:24 dd Exp $";
-#endif
-
-#ifndef lint
-#ifndef NOID
-static char copyright[] =
-"@(#) Copyright (c) 1994 Powerdog Industries. All rights reserved.";
-static char sccsid[] = "@(#)strptime.c 0.1 (Powerdog) 94/03/27";
-#endif /* !defined NOID */
-#endif /* not lint */
-
-#include <time.h>
-#include <ctype.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <string.h>
-#ifdef _THREAD_SAFE
-#include <pthread.h>
-#include "pthread_private.h"
-#endif
-#include "timelocal.h"
-
-static char * _strptime(const char *, const char *, struct tm *);
-
-#ifdef _THREAD_SAFE
-static struct pthread_mutex _gotgmt_mutexd = PTHREAD_MUTEX_STATIC_INITIALIZER;
-static pthread_mutex_t gotgmt_mutex = &_gotgmt_mutexd;
-#endif
-static int got_GMT;
-
-#define asizeof(a) (sizeof (a) / sizeof ((a)[0]))
-
-static char *
-_strptime(const char *buf, const char *fmt, struct tm *tm)
-{
- char c;
- const char *ptr;
- int i,
- len;
- int Ealternative, Oalternative;
-
- ptr = fmt;
- while (*ptr != 0) {
- if (*buf == 0)
- break;
-
- c = *ptr++;
-
- if (c != '%') {
- if (isspace((unsigned char)c))
- while (*buf != 0 && isspace((unsigned char)*buf))
- buf++;
- else if (c != *buf++)
- return 0;
- continue;
- }
-
- Ealternative = 0;
- Oalternative = 0;
-label:
- c = *ptr++;
- switch (c) {
- case 0:
- case '%':
- if (*buf++ != '%')
- return 0;
- break;
-
- case '+':
- buf = _strptime(buf, Locale->date_fmt, tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'C':
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- /* XXX This will break for 3-digit centuries. */
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (i < 19)
- return 0;
-
- tm->tm_year = i * 100 - 1900;
- break;
-
- case 'c':
- /* NOTE: c_fmt is intentionally ignored */
- buf = _strptime(buf, "%a %Ef %T %Y", tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'D':
- buf = _strptime(buf, "%m/%d/%y", tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'E':
- if (Ealternative || Oalternative)
- break;
- Ealternative++;
- goto label;
-
- case 'O':
- if (Ealternative || Oalternative)
- break;
- Oalternative++;
- goto label;
-
- case 'F':
- case 'f':
- if (!Ealternative)
- break;
- buf = _strptime(buf, (c == 'f') ? Locale->Ef_fmt : Locale->EF_fmt, tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'R':
- buf = _strptime(buf, "%H:%M", tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'r':
- buf = _strptime(buf, "%I:%M:%S %p", tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'T':
- buf = _strptime(buf, "%H:%M:%S", tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'X':
- buf = _strptime(buf, Locale->X_fmt, tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'x':
- buf = _strptime(buf, Locale->x_fmt, tm);
- if (buf == 0)
- return 0;
- break;
-
- case 'j':
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 3;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (i < 1 || i > 366)
- return 0;
-
- tm->tm_yday = i - 1;
- break;
-
- case 'M':
- case 'S':
- if (*buf == 0 || isspace((unsigned char)*buf))
- break;
-
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
-
- if (c == 'M') {
- if (i > 59)
- return 0;
- tm->tm_min = i;
- } else {
- if (i > 60)
- return 0;
- tm->tm_sec = i;
- }
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'H':
- case 'I':
- case 'k':
- case 'l':
- /*
- * Of these, %l is the only specifier explicitly
- * documented as not being zero-padded. However,
- * there is no harm in allowing zero-padding.
- *
- * XXX The %l specifier may gobble one too many
- * digits if used incorrectly.
- */
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (c == 'H' || c == 'k') {
- if (i > 23)
- return 0;
- } else if (i > 12)
- return 0;
-
- tm->tm_hour = i;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'p':
- /*
- * XXX This is bogus if parsed before hour-related
- * specifiers.
- */
- len = strlen(Locale->am);
- if (strncasecmp(buf, Locale->am, len) == 0) {
- if (tm->tm_hour > 12)
- return 0;
- if (tm->tm_hour == 12)
- tm->tm_hour = 0;
- buf += len;
- break;
- }
-
- len = strlen(Locale->pm);
- if (strncasecmp(buf, Locale->pm, len) == 0) {
- if (tm->tm_hour > 12)
- return 0;
- if (tm->tm_hour != 12)
- tm->tm_hour += 12;
- buf += len;
- break;
- }
-
- return 0;
-
- case 'A':
- case 'a':
- for (i = 0; i < asizeof(Locale->weekday); i++) {
- if (c == 'A') {
- len = strlen(Locale->weekday[i]);
- if (strncasecmp(buf,
- Locale->weekday[i],
- len) == 0)
- break;
- } else {
- len = strlen(Locale->wday[i]);
- if (strncasecmp(buf,
- Locale->wday[i],
- len) == 0)
- break;
- }
- }
- if (i == asizeof(Locale->weekday))
- return 0;
-
- tm->tm_wday = i;
- buf += len;
- break;
-
- case 'U':
- case 'W':
- /*
- * XXX This is bogus, as we can not assume any valid
- * information present in the tm structure at this
- * point to calculate a real value, so just check the
- * range for now.
- */
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (i > 53)
- return 0;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'w':
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- i = *buf - '0';
- if (i > 6)
- return 0;
-
- tm->tm_wday = i;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'd':
- case 'e':
- /*
- * The %e specifier is explicitly documented as not
- * being zero-padded but there is no harm in allowing
- * such padding.
- *
- * XXX The %e specifier may gobble one too many
- * digits if used incorrectly.
- */
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (i > 31)
- return 0;
-
- tm->tm_mday = i;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'B':
- case 'b':
- case 'h':
- for (i = 0; i < asizeof(Locale->month); i++) {
- if (Oalternative) {
- if (c == 'B') {
- len = strlen(Locale->alt_month[i]);
- if (strncasecmp(buf,
- Locale->alt_month[i],
- len) == 0)
- break;
- }
- } else {
- if (c == 'B') {
- len = strlen(Locale->month[i]);
- if (strncasecmp(buf,
- Locale->month[i],
- len) == 0)
- break;
- } else {
- len = strlen(Locale->mon[i]);
- if (strncasecmp(buf,
- Locale->mon[i],
- len) == 0)
- break;
- }
- }
- }
- if (i == asizeof(Locale->month))
- return 0;
-
- tm->tm_mon = i;
- buf += len;
- break;
-
- case 'm':
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (i < 1 || i > 12)
- return 0;
-
- tm->tm_mon = i - 1;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 's':
- {
- char *cp;
- time_t t;
-
- t = strtol(buf, &cp, 10);
- if (t == LONG_MAX)
- return 0;
- buf = cp;
- gmtime_r(&t, tm);
- got_GMT = 1;
- }
- break;
-
- case 'Y':
- case 'y':
- if (*buf == 0 || isspace((unsigned char)*buf))
- break;
-
- if (!isdigit((unsigned char)*buf))
- return 0;
-
- len = (c == 'Y') ? 4 : 2;
- for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
- i *= 10;
- i += *buf - '0';
- len--;
- }
- if (c == 'Y')
- i -= 1900;
- if (c == 'y' && i < 69)
- i += 100;
- if (i < 0)
- return 0;
-
- tm->tm_year = i;
-
- if (*buf != 0 && isspace((unsigned char)*buf))
- while (*ptr != 0 && !isspace((unsigned char)*ptr))
- ptr++;
- break;
-
- case 'Z':
- {
- const char *cp;
- char *zonestr;
-
- for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp) {/*empty*/}
- if (cp - buf) {
- zonestr = alloca(cp - buf + 1);
- strncpy(zonestr, buf, cp - buf);
- zonestr[cp - buf] = '\0';
- tzset();
- if (0 == strcmp(zonestr, "GMT")) {
- got_GMT = 1;
- } else if (0 == strcmp(zonestr, tzname[0])) {
- tm->tm_isdst = 0;
- } else if (0 == strcmp(zonestr, tzname[1])) {
- tm->tm_isdst = 1;
- } else {
- return 0;
- }
- buf += cp - buf;
- }
- }
- break;
- }
- }
- return (char *)buf;
-}
-
-
-char *
-strptime(const char *buf, const char *fmt, struct tm *tm)
-{
- char *ret;
-
-#ifdef _THREAD_SAFE
- pthread_mutex_lock(&gotgmt_mutex);
-#endif
-
- got_GMT = 0;
- ret = _strptime(buf, fmt, tm);
- if (ret && got_GMT) {
- time_t t = timegm(tm);
- localtime_r(&t, tm);
- got_GMT = 0;
- }
-
-#ifdef _THREAD_SAFE
- pthread_mutex_unlock(&gotgmt_mutex);
-#endif
-
- return ret;
-}
projects / apple / libc.git / blobdiff