Initial revision

1 files changed, 385 insertions, 0 deletions

diff --git a/compat/strftime.c b/compat/strftime.c
new file mode 100644
index 0000000..7c72557
--- /dev/null
+++ b/compat/strftime.c
@@ -0,0 +1,385 @@
+/* 
+ * strftime.c --
+ *
+ *	This file contains a modified version of the BSD 4.4 strftime
+ *	function.
+ *
+ * This file is a modified version of the strftime.c file from the BSD 4.4
+ * source.  See the copyright notice below for details on redistribution
+ * restrictions.  The "license.terms" file does not apply to this file.
+ *
+ * SCCS: @(#) strftime.c 1.4 97/08/07 17:17:02
+ */
+
+/*
+ * Copyright (c) 1989 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)strftime.c	5.11 (Berkeley) 2/24/91";*/
+static char *rcsid = "$Id: strftime.c,v 1.1 1998/03/26 14:46:31 rjohnson Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <time.h>
+#include <string.h>
+#include <locale.h>
+#include "tclInt.h"
+#include "tclPort.h"
+
+#define TM_YEAR_BASE   1900
+
+typedef struct {
+    const char *abday[7];
+    const char *day[7];
+    const char *abmon[12];
+    const char *mon[12];
+    const char *am_pm[2];
+    const char *d_t_fmt;
+    const char *d_fmt;
+    const char *t_fmt;
+    const char *t_fmt_ampm;
+} _TimeLocale;
+ 
+static const _TimeLocale _DefaultTimeLocale = 
+{
+    {
+	"Sun","Mon","Tue","Wed","Thu","Fri","Sat",
+    },
+    {
+	"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
+	"Friday", "Saturday"
+    },
+    {
+	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+    },
+    {
+	"January", "February", "March", "April", "May", "June", "July",
+	"August", "September", "October", "November", "December"
+    },
+    {
+	"AM", "PM"
+    },
+    "%a %b %d %H:%M:%S %Y",
+    "%m/%d/%y",
+    "%H:%M:%S",
+    "%I:%M:%S %p"
+};
+
+static const _TimeLocale *_CurrentTimeLocale = &_DefaultTimeLocale;
+
+static size_t gsize;
+static char *pt;
+static int		 _add _ANSI_ARGS_((const char* str));
+static int		_conv _ANSI_ARGS_((int n, int digits, int pad));
+static int		_secs _ANSI_ARGS_((const struct tm *t));
+static size_t		_fmt _ANSI_ARGS_((const char *format,
+			    const struct tm *t));
+
+size_t
+TclStrftime(s, maxsize, format, t)
+    char *s;
+    size_t maxsize;
+    const char *format;
+    const struct tm *t;
+{
+    tzset();
+
+    pt = s;
+    if ((gsize = maxsize) < 1)
+	return(0);
+    if (_fmt(format, t)) {
+	*pt = '\0';
+	return(maxsize - gsize);
+    }
+    return(0);
+}
+
+#define SUN_WEEK(t)	(((t)->tm_yday + 7 - \
+				((t)->tm_wday)) / 7)
+#define MON_WEEK(t)	(((t)->tm_yday + 7 - \
+				((t)->tm_wday ? (t)->tm_wday - 1 : 6)) / 7)
+
+static size_t
+_fmt(format, t)
+    const char *format;
+    const struct tm *t;
+{
+    for (; *format; ++format) {
+	if (*format == '%') {
+	    ++format;
+	    if (*format == 'E') {
+				/* Alternate Era */
+		++format;
+	    } else if (*format == 'O') {
+				/* Alternate numeric symbols */
+		++format;
+	    }
+	    switch(*format) {
+		case '\0':
+		    --format;
+		    break;
+		case 'A':
+		    if (t->tm_wday < 0 || t->tm_wday > 6)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->day[t->tm_wday]))
+			return(0);
+		    continue;
+		case 'a':
+		    if (t->tm_wday < 0 || t->tm_wday > 6)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->abday[t->tm_wday]))
+			return(0);
+		    continue;
+		case 'B':
+		    if (t->tm_mon < 0 || t->tm_mon > 11)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->mon[t->tm_mon]))
+			return(0);
+		    continue;
+		case 'b':
+		case 'h':
+		    if (t->tm_mon < 0 || t->tm_mon > 11)
+			return(0);
+		    if (!_add(_CurrentTimeLocale->abmon[t->tm_mon]))
+			return(0);
+		    continue;
+		case 'C':
+		    if (!_conv((t->tm_year + TM_YEAR_BASE) / 100,
+			    2, '0'))
+			return(0);
+		    continue;
+		case 'c':
+		    if (!_fmt(_CurrentTimeLocale->d_t_fmt, 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(_CurrentTimeLocale->am_pm[t->tm_hour >= 12]))
+			return(0);
+		    continue;
+		case 'R':
+		    if (!_fmt("%H:%M", t))
+			return(0);
+		    continue;
+		case 'r':
+		    if (!_fmt(_CurrentTimeLocale->t_fmt_ampm, t))
+			return(0);
+		    continue;
+		case 'S':
+		    if (!_conv(t->tm_sec, 2, '0'))
+			return(0);
+		    continue;
+		case 's':
+		    if (!_secs(t))
+			return(0);
+		    continue;
+		case 'T':
+		    if (!_fmt("%H:%M:%S", t))
+			return(0);
+		    continue;
+		case 't':
+		    if (!_add("\t"))
+			return(0);
+		    continue;
+		case 'U':
+		    if (!_conv(SUN_WEEK(t), 2, '0'))
+			return(0);
+		    continue;
+		case 'u':
+		    if (!_conv(t->tm_wday ? t->tm_wday : 7, 1, '0'))
+			return(0);
+		    continue;
+		case 'V':
+		{
+				/* ISO 8601 Week Of Year:
+				   If the week (Monday - Sunday) containing
+				   January 1 has four or more days in the new 
+				   year, then it is week 1; otherwise it is 
+				   week 53 of the previous year and the next
+				   week is week one. */
+				 
+		    int week = MON_WEEK(t);
+
+		    int days = (((t)->tm_yday + 7 - \
+			    ((t)->tm_wday ? (t)->tm_wday - 1 : 6)) % 7);
+
+
+		    if (days >= 4) {
+			week++;
+		    } else if (week == 0) {
+			week = 53;
+		    }
+
+		    if (!_conv(week, 2, '0'))
+			return(0);
+		    continue;
+		}
+		case 'W':
+		    if (!_conv(MON_WEEK(t), 2, '0'))
+			return(0);
+		    continue;
+		case 'w':
+		    if (!_conv(t->tm_wday, 1, '0'))
+			return(0);
+		    continue;
+		case 'x':
+		    if (!_fmt(_CurrentTimeLocale->d_fmt, t))
+			return(0);
+		    continue;
+		case 'X':
+		    if (!_fmt(_CurrentTimeLocale->t_fmt, 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;
+#ifndef MAC_TCL
+		case 'Z': {
+		    char *name = TclpGetTZName();
+		    if (name && !_add(name)) {
+			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);
+}
+
+static int
+_secs(t)
+    const struct tm *t;
+{
+    static char buf[15];
+    register time_t s;
+    register 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-- = (char)(s % 10 + '0');
+    return(_add(++p));
+}
+
+static int
+_conv(n, digits, pad)
+    int n, digits;
+    int pad;
+{
+    static char buf[10];
+    register char *p;
+
+    for (p = buf + sizeof(buf) - 2; n > 0 && p > buf; n /= 10, --digits)
+	*p-- = (char)(n % 10 + '0');
+    while (p > buf && digits-- > 0)
+	*p-- = (char) pad;
+    return(_add(++p));
+}
+
+static int
+_add(str)
+    const char *str;
+{
+    for (;; ++pt, --gsize) {
+	if (!gsize)
+	    return(0);
+	if (!(*pt = *str++))
+	    return(1);
+    }
+}