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authormarkm <markm@FreeBSD.org>1997-09-04 06:04:33 +0000
committermarkm <markm@FreeBSD.org>1997-09-04 06:04:33 +0000
commita8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8 (patch)
tree0b84977f19022a965f8c6145f067f951173f6290 /crypto/kerberosIV/lib/roken/strftime.c
downloadFreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.zip
FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.tar.gz
Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their own changes later.
Diffstat (limited to 'crypto/kerberosIV/lib/roken/strftime.c')
-rw-r--r--crypto/kerberosIV/lib/roken/strftime.c299
1 files changed, 299 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/roken/strftime.c b/crypto/kerberosIV/lib/roken/strftime.c
new file mode 100644
index 0000000..3473778
--- /dev/null
+++ b/crypto/kerberosIV/lib/roken/strftime.c
@@ -0,0 +1,299 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. 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 the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <sys/types.h>
+#ifdef TIME_WITH_SYS_TIME
+#include <sys/time.h>
+#include <time.h>
+#elif defined(HAVE_SYS_TIME_H)
+#include <sys/time.h>
+#else
+#include <time.h>
+#endif
+#define TM_YEAR_BASE 1900 /* from <tzfile.h> */
+#include <string.h>
+
+static char *afmt[] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
+};
+static char *Afmt[] = {
+ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
+ "Saturday",
+};
+static char *bfmt[] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
+ "Oct", "Nov", "Dec",
+};
+static char *Bfmt[] = {
+ "January", "February", "March", "April", "May", "June", "July",
+ "August", "September", "October", "November", "December",
+};
+
+static size_t gsize;
+static char *pt;
+
+static int _add (char *);
+static int _conv (int, int, int);
+#ifdef HAVE_MKTIME
+static int _secs (const struct tm *);
+#endif /* HAVE_MKTIME */
+static size_t _fmt (const char *, const struct tm *);
+
+size_t
+strftime(char *s, size_t maxsize, const char *format, const struct tm *t)
+{
+
+ pt = s;
+ if ((gsize = maxsize) < 1)
+ return(0);
+ if (_fmt(format, t)) {
+ *pt = '\0';
+ return(maxsize - gsize);
+ }
+ return(0);
+}
+
+static size_t
+_fmt(const char *format, const struct tm *t)
+{
+ for (; *format; ++format) {
+ if (*format == '%')
+ switch(*++format) {
+ case '\0':
+ --format;
+ break;
+ case 'A':
+ if (t->tm_wday < 0 || t->tm_wday > 6)
+ return(0);
+ if (!_add(Afmt[t->tm_wday]))
+ return(0);
+ continue;
+ case 'a':
+ if (t->tm_wday < 0 || t->tm_wday > 6)
+ return(0);
+ if (!_add(afmt[t->tm_wday]))
+ return(0);
+ continue;
+ case 'B':
+ if (t->tm_mon < 0 || t->tm_mon > 11)
+ return(0);
+ if (!_add(Bfmt[t->tm_mon]))
+ return(0);
+ continue;
+ case 'b':
+ case 'h':
+ if (t->tm_mon < 0 || t->tm_mon > 11)
+ return(0);
+ if (!_add(bfmt[t->tm_mon]))
+ return(0);
+ continue;
+ case 'C':
+ if (!_fmt("%a %b %e %H:%M:%S %Y", t))
+ return(0);
+ continue;
+ case 'c':
+ if (!_fmt("%m/%d/%y %H:%M:%S", t))
+ return(0);
+ continue;
+ case 'D':
+ if (!_fmt("%m/%d/%y", t))
+ return(0);
+ continue;
+ case 'd':
+ if (!_conv(t->tm_mday, 2, '0'))
+ return(0);
+ continue;
+ case 'e':
+ if (!_conv(t->tm_mday, 2, ' '))
+ return(0);
+ continue;
+ case 'H':
+ if (!_conv(t->tm_hour, 2, '0'))
+ return(0);
+ continue;
+ case 'I':
+ if (!_conv(t->tm_hour % 12 ?
+ t->tm_hour % 12 : 12, 2, '0'))
+ return(0);
+ continue;
+ case 'j':
+ if (!_conv(t->tm_yday + 1, 3, '0'))
+ return(0);
+ continue;
+ case 'k':
+ if (!_conv(t->tm_hour, 2, ' '))
+ return(0);
+ continue;
+ case 'l':
+ if (!_conv(t->tm_hour % 12 ?
+ t->tm_hour % 12 : 12, 2, ' '))
+ return(0);
+ continue;
+ case 'M':
+ if (!_conv(t->tm_min, 2, '0'))
+ return(0);
+ continue;
+ case 'm':
+ if (!_conv(t->tm_mon + 1, 2, '0'))
+ return(0);
+ continue;
+ case 'n':
+ if (!_add("\n"))
+ return(0);
+ continue;
+ case 'p':
+ if (!_add(t->tm_hour >= 12 ? "PM" : "AM"))
+ return(0);
+ continue;
+ case 'R':
+ if (!_fmt("%H:%M", t))
+ return(0);
+ continue;
+ case 'r':
+ if (!_fmt("%I:%M:%S %p", t))
+ return(0);
+ continue;
+ case 'S':
+ if (!_conv(t->tm_sec, 2, '0'))
+ return(0);
+ continue;
+#ifdef HAVE_MKTIME
+ case 's':
+ if (!_secs(t))
+ return(0);
+ continue;
+#endif /* HAVE_MKTIME */
+ case 'T':
+ case 'X':
+ if (!_fmt("%H:%M:%S", t))
+ return(0);
+ continue;
+ case 't':
+ if (!_add("\t"))
+ return(0);
+ continue;
+ case 'U':
+ if (!_conv((t->tm_yday + 7 - t->tm_wday) / 7,
+ 2, '0'))
+ return(0);
+ continue;
+ case 'W':
+ if (!_conv((t->tm_yday + 7 -
+ (t->tm_wday ? (t->tm_wday - 1) : 6))
+ / 7, 2, '0'))
+ return(0);
+ continue;
+ case 'w':
+ if (!_conv(t->tm_wday, 1, '0'))
+ return(0);
+ continue;
+ case 'x':
+ if (!_fmt("%m/%d/%y", t))
+ return(0);
+ continue;
+ case 'y':
+ if (!_conv((t->tm_year + TM_YEAR_BASE)
+ % 100, 2, '0'))
+ return(0);
+ continue;
+ case 'Y':
+ if (!_conv(t->tm_year + TM_YEAR_BASE, 4, '0'))
+ return(0);
+ continue;
+#ifdef notdef
+ case 'Z':
+ if (!t->tm_zone || !_add(t->tm_zone))
+ return(0);
+ continue;
+#endif
+ case '%':
+ /*
+ * X311J/88-090 (4.12.3.5): if conversion char is
+ * undefined, behavior is undefined. Print out the
+ * character itself as printf(3) does.
+ */
+ default:
+ break;
+ }
+ if (!gsize--)
+ return(0);
+ *pt++ = *format;
+ }
+ return(gsize);
+}
+
+#ifdef HAVE_MKTIME
+static int
+_secs(const struct tm *t)
+{
+ static char buf[15];
+ time_t s;
+ char *p;
+ struct tm tmp;
+
+ /* Make a copy, mktime(3) modifies the tm struct. */
+ tmp = *t;
+ s = mktime(&tmp);
+ for (p = buf + sizeof(buf) - 2; s > 0 && p > buf; s /= 10)
+ *p-- = s % 10 + '0';
+ return(_add(++p));
+}
+#endif /* HAVE_MKTIME */
+
+static int
+_conv(int n, int digits, int pad)
+{
+ static char buf[10];
+ char *p;
+
+ for (p = buf + sizeof(buf) - 2; n > 0 && p > buf; n /= 10, --digits)
+ *p-- = n % 10 + '0';
+ while (p > buf && digits-- > 0)
+ *p-- = pad;
+ return(_add(++p));
+}
+
+static int
+_add(str)
+ char *str;
+{
+ for (;; ++pt, --gsize) {
+ if (!gsize)
+ return(0);
+ if (!(*pt = *str++))
+ return(1);
+ }
+}
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