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-rw-r--r--lib/libc/stdtime/strptime.c349
1 files changed, 349 insertions, 0 deletions
diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
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+++ b/lib/libc/stdtime/strptime.c
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+/*
+ * 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[] =
+ "$Id: strptime.c,v 1.3 1997/08/13 13:11:53 ache 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 <string.h>
+#include "timelocal.h"
+
+#define asizeof(a) (sizeof (a) / sizeof ((a)[0]))
+
+char *
+strptime(const char *buf, const char *fmt, struct tm *tm)
+{
+ char c;
+ const char *ptr;
+ int i,
+ len;
+
+ 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;
+ }
+
+ c = *ptr++;
+ switch (c) {
+ case 0:
+ case '%':
+ if (*buf++ != '%')
+ return 0;
+ break;
+
+ case 'C':
+ buf = strptime(buf, Locale->date_fmt, tm);
+ if (buf == 0)
+ return 0;
+ break;
+
+ case 'c':
+ buf = strptime(buf, "%x %X", tm);
+ if (buf == 0)
+ return 0;
+ break;
+
+ case 'D':
+ buf = strptime(buf, "%m/%d/%y", 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;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ if (i > 365)
+ return 0;
+
+ tm->tm_yday = i;
+ break;
+
+ case 'M':
+ case 'S':
+ if (*buf == 0 || isspace((unsigned char)*buf))
+ break;
+
+ if (!isdigit((unsigned char)*buf))
+ return 0;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ if (i > 59)
+ return 0;
+
+ if (c == 'M')
+ tm->tm_min = i;
+ else
+ 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':
+ if (!isdigit((unsigned char)*buf))
+ return 0;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ if (c == 'H' || c == 'k') {
+ if (i > 23)
+ return 0;
+ } else if (i > 11)
+ return 0;
+
+ tm->tm_hour = i;
+
+ if (*buf != 0 && isspace((unsigned char)*buf))
+ while (*ptr != 0 && !isspace((unsigned char)*ptr))
+ ptr++;
+ break;
+
+ case 'p':
+ 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++) {
+ len = strlen(Locale->weekday[i]);
+ if (strncasecmp(buf,
+ Locale->weekday[i],
+ len) == 0)
+ break;
+
+ 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 'd':
+ case 'e':
+ if (!isdigit((unsigned char)*buf))
+ return 0;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ 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++) {
+ len = strlen(Locale->month[i]);
+ if (strncasecmp(buf,
+ Locale->month[i],
+ len) == 0)
+ break;
+
+ 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;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ 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 'Y':
+ case 'y':
+ if (*buf == 0 || isspace((unsigned char)*buf))
+ break;
+
+ if (!isdigit((unsigned char)*buf))
+ return 0;
+
+ for (i = 0; *buf != 0 && isdigit((unsigned char)*buf); buf++) {
+ i *= 10;
+ i += *buf - '0';
+ }
+ if (c == 'Y')
+ i -= 1900;
+ 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;
+ }
+ }
+
+ return (char *)buf;
+}
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