busybox/coreutils/cal.c

/* vi: set sw=4 ts=4: */
/*
 * Calendar implementation for busybox
 *
 * See original copyright at the end of this file
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/* BB_AUDIT SUSv3 compliant with -j and -y extensions (from util-linux). */
/* BB_AUDIT BUG: The output of 'cal -j 1752' is incorrect.  The upstream
 * BB_AUDIT BUG: version in util-linux seems to be broken as well. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cal.html */

/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
 *
 * Major size reduction... over 50% (>1.5k) on i386.
 */
#include "libbb.h"
#include "unicode.h"

/* We often use "unsigned" intead of "int", it's easier to div on most CPUs */

#define	THURSDAY		4		/* for reformation */
#define	SATURDAY		6		/* 1 Jan 1 was a Saturday */

#define	FIRST_MISSING_DAY	639787		/* 3 Sep 1752 */
#define	NUMBER_MISSING_DAYS	11		/* 11 day correction */

#define	MAXDAYS			42		/* max slots in a month array */
#define	SPACE			-1		/* used in day array */

static const unsigned char days_in_month[] ALIGN1 = {
	0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};

static const unsigned char sep1752[] ALIGN1 = {
		 1,	2,	14,	15,	16,
	17,	18,	19,	20,	21,	22,	23,
	24,	25,	26,	27,	28,	29,	30
};

/* Set to 0 or 1 in main */
#define julian ((unsigned)option_mask32)

/* leap year -- account for Gregorian reformation in 1752 */
static int leap_year(unsigned yr)
{
	if (yr <= 1752)
		return !(yr % 4);
	return (!(yr % 4) && (yr % 100)) || !(yr % 400);
}

/* number of centuries since 1700, not inclusive */
#define	centuries_since_1700(yr) \
	((yr) > 1700 ? (yr) / 100 - 17 : 0)

/* number of centuries since 1700 whose modulo of 400 is 0 */
#define	quad_centuries_since_1700(yr) \
	((yr) > 1600 ? ((yr) - 1600) / 400 : 0)

/* number of leap years between year 1 and this year, not inclusive */
#define	leap_years_since_year_1(yr) \
	((yr) / 4 - centuries_since_1700(yr) + quad_centuries_since_1700(yr))

static void center(char *, unsigned, unsigned);
static void day_array(unsigned, unsigned, unsigned *);
static void trim_trailing_spaces_and_print(char *);

static void blank_string(char *buf, size_t buflen);
static char *build_row(char *p, unsigned *dp);

#define	DAY_LEN		3		/* 3 spaces per day */
#define	J_DAY_LEN	(DAY_LEN + 1)
#define	WEEK_LEN	20		/* 7 * 3 - one space at the end */
#define	J_WEEK_LEN	(WEEK_LEN + 7)
#define	HEAD_SEP	2		/* spaces between day headings */

int cal_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int cal_main(int argc UNUSED_PARAM, char **argv)
{
	struct tm zero_tm;
	time_t now;
	unsigned month, year, flags, i;
	char *month_names[12];
	/* normal heading: */
	/* "Su Mo Tu We Th Fr Sa" */
	/* -j heading: */
	/* " Su  Mo  Tu  We  Th  Fr  Sa" */
	char day_headings[ENABLE_FEATURE_ASSUME_UNICODE ? 28 * 6 : 28];
	IF_FEATURE_ASSUME_UNICODE(char *hp = day_headings;)
	char buf[40];

	init_unicode();

	flags = getopt32(argv, "jy");
	/* This sets julian = flags & 1: */
	option_mask32 &= 1;
	month = 0;
	argv += optind;

	if (!argv[0]) {
		struct tm *ptm;

		time(&now);
		ptm = localtime(&now);
		year = ptm->tm_year + 1900;
		if (!(flags & 2)) { /* no -y */
			month = ptm->tm_mon + 1;
		}
	} else {
		if (argv[1]) {
			if (argv[2]) {
				bb_show_usage();
			}
			month = xatou_range(*argv++, 1, 12);
		}
		year = xatou_range(*argv, 1, 9999);
	}

	blank_string(day_headings, sizeof(day_headings) - 7 + 7*julian);

	i = 0;
	do {
		zero_tm.tm_mon = i;
		/* full month name according to locale */
		strftime(buf, sizeof(buf), "%B", &zero_tm);
		month_names[i] = xstrdup(buf);

		if (i < 7) {
			zero_tm.tm_wday = i;
			/* abbreviated weekday name according to locale */
			strftime(buf, sizeof(buf), "%a", &zero_tm);
#if ENABLE_FEATURE_ASSUME_UNICODE
			if (julian)
				*hp++ = ' ';
			{
				char *two_wchars = unicode_cut_nchars(2, buf);
				strcpy(hp, two_wchars);
				free(two_wchars);
			}
			hp += strlen(hp);
			*hp++ = ' ';
#else
			strncpy(day_headings + i * (3+julian) + julian, buf, 2);
#endif
		}
	} while (++i < 12);
	IF_FEATURE_ASSUME_UNICODE(hp[-1] = '\0';)

	if (month) {
		unsigned row, len, days[MAXDAYS];
		unsigned *dp = days;
		char lineout[30];

		day_array(month, year, dp);
		len = sprintf(lineout, "%s %d", month_names[month - 1], year);
		printf("%*s%s\n%s\n",
			   ((7*julian + WEEK_LEN) - len) / 2, "",
			   lineout, day_headings);
		for (row = 0; row < 6; row++) {
			build_row(lineout, dp)[0] = '\0';
			dp += 7;
			trim_trailing_spaces_and_print(lineout);
		}
	} else {
		unsigned row, which_cal, week_len, days[12][MAXDAYS];
		unsigned *dp;
		char lineout[80];

		sprintf(lineout, "%u", year);
		center(lineout,
			   (WEEK_LEN * 3 + HEAD_SEP * 2)
			   + julian * (J_WEEK_LEN * 2 + HEAD_SEP
						   - (WEEK_LEN * 3 + HEAD_SEP * 2)),
			   0);
		puts("\n");		/* two \n's */
		for (i = 0; i < 12; i++) {
			day_array(i + 1, year, days[i]);
		}
		blank_string(lineout, sizeof(lineout));
		week_len = WEEK_LEN + julian * (J_WEEK_LEN - WEEK_LEN);
		for (month = 0; month < 12; month += 3-julian) {
			center(month_names[month], week_len, HEAD_SEP);
			if (!julian) {
				center(month_names[month + 1], week_len, HEAD_SEP);
			}
			center(month_names[month + 2 - julian], week_len, 0);
			printf("\n%s%*s%s", day_headings, HEAD_SEP, "", day_headings);
			if (!julian) {
				printf("%*s%s", HEAD_SEP, "", day_headings);
			}
			bb_putchar('\n');
			for (row = 0; row < (6*7); row += 7) {
				for (which_cal = 0; which_cal < 3-julian; which_cal++) {
					dp = days[month + which_cal] + row;
					build_row(lineout + which_cal * (week_len + 2), dp);
				}
				/* blank_string took care of nul termination. */
				trim_trailing_spaces_and_print(lineout);
			}
		}
	}

	fflush_stdout_and_exit(EXIT_SUCCESS);
}

/*
 * day_array --
 *	Fill in an array of 42 integers with a calendar.  Assume for a moment
 *	that you took the (maximum) 6 rows in a calendar and stretched them
 *	out end to end.  You would have 42 numbers or spaces.  This routine
 *	builds that array for any month from Jan. 1 through Dec. 9999.
 */
static void day_array(unsigned month, unsigned year, unsigned *days)
{
	unsigned long temp;
	unsigned i;
	unsigned day, dw, dm;

	memset(days, SPACE, MAXDAYS * sizeof(int));

	if ((month == 9) && (year == 1752)) {
		/* Assumes the Gregorian reformation eliminates
		 * 3 Sep. 1752 through 13 Sep. 1752.
		 */
		unsigned j_offset = julian * 244;
		size_t oday = 0;

		do {
			days[oday+2] = sep1752[oday] + j_offset;
		} while (++oday < sizeof(sep1752));

		return;
	}

	/* day_in_year
	 * return the 1 based day number within the year
	 */
	day = 1;
	if ((month > 2) && leap_year(year)) {
		++day;
	}

	i = month;
	while (i) {
		day += days_in_month[--i];
	}

	/* day_in_week
	 * return the 0 based day number for any date from 1 Jan. 1 to
	 * 31 Dec. 9999.  Assumes the Gregorian reformation eliminates
	 * 3 Sep. 1752 through 13 Sep. 1752.  Returns Thursday for all
	 * missing days.
	 */
	temp = (long)(year - 1) * 365 + leap_years_since_year_1(year - 1) + day;
	if (temp < FIRST_MISSING_DAY) {
		dw = ((temp - 1 + SATURDAY) % 7);
	} else {
		dw = (((temp - 1 + SATURDAY) - NUMBER_MISSING_DAYS) % 7);
	}

	if (!julian) {
		day = 1;
	}

	dm = days_in_month[month];
	if ((month == 2) && leap_year(year)) {
		++dm;
	}

	do {
		days[dw++] = day++;
	} while (--dm);
}

static void trim_trailing_spaces_and_print(char *s)
{
	char *p = s;

	while (*p) {
		++p;
	}
	while (p != s) {
		--p;
		if (!isspace(*p)) {
			p[1] = '\0';
			break;
		}
	}

	puts(s);
}

static void center(char *str, unsigned len, unsigned separate)
{
	unsigned n = strlen(str);
	len -= n;
	printf("%*s%*s", (len/2) + n, str, (len/2) + (len % 2) + separate, "");
}

static void blank_string(char *buf, size_t buflen)
{
	memset(buf, ' ', buflen);
	buf[buflen-1] = '\0';
}

static char *build_row(char *p, unsigned *dp)
{
	unsigned col, val, day;

	memset(p, ' ', (julian + DAY_LEN) * 7);

	col = 0;
	do {
		day = *dp++;
		if (day != SPACE) {
			if (julian) {
				++p;
				if (day >= 100) {
					*p = '0';
					p[-1] = (day / 100) + '0';
					day %= 100;
				}
			}
			val = day / 10;
			if (val > 0) {
				*p = val + '0';
			}
			*++p = day % 10 + '0';
			p += 2;
		} else {
			p += DAY_LEN + julian;
		}
	} while (++col < 7);

	return p;
}

/*
 * Copyright (c) 1989, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kim Letkeman.
 *
 * 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. 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.
 */
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* Calendar implementation for busybox
4			*
5			* See original copyright at the end of this file
6			*
7			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8			*/
9
10			/* BB_AUDIT SUSv3 compliant with -j and -y extensions (from util-linux). */
11			/* BB_AUDIT BUG: The output of 'cal -j 1752' is incorrect. The upstream
12			* BB_AUDIT BUG: version in util-linux seems to be broken as well. */
13			/* http://www.opengroup.org/onlinepubs/007904975/utilities/cal.html */
14
15			/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
16			*
17			* Major size reduction... over 50% (>1.5k) on i386.
18			*/
19	niro	816	#include "libbb.h"
20	niro	984	#include "unicode.h"
21	niro	532
22	niro	816	/* We often use "unsigned" intead of "int", it's easier to div on most CPUs */
23
24	niro	532	#define THURSDAY 4 /* for reformation */
25			#define SATURDAY 6 /* 1 Jan 1 was a Saturday */
26
27			#define FIRST_MISSING_DAY 639787 /* 3 Sep 1752 */
28			#define NUMBER_MISSING_DAYS 11 /* 11 day correction */
29
30			#define MAXDAYS 42 /* max slots in a month array */
31			#define SPACE -1 /* used in day array */
32
33	niro	816	static const unsigned char days_in_month[] ALIGN1 = {
34	niro	532	0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
35			};
36
37	niro	816	static const unsigned char sep1752[] ALIGN1 = {
38	niro	532	1, 2, 14, 15, 16,
39			17, 18, 19, 20, 21, 22, 23,
40			24, 25, 26, 27, 28, 29, 30
41			};
42
43	niro	816	/* Set to 0 or 1 in main */
44			#define julian ((unsigned)option_mask32)
45	niro	532
46			/* leap year -- account for Gregorian reformation in 1752 */
47	niro	816	static int leap_year(unsigned yr)
48	niro	532	{
49	niro	816	if (yr <= 1752)
50			return !(yr % 4);
51			return (!(yr % 4) && (yr % 100)) \|\| !(yr % 400);
52	niro	532	}
53
54			/* number of centuries since 1700, not inclusive */
55			#define centuries_since_1700(yr) \
56			((yr) > 1700 ? (yr) / 100 - 17 : 0)
57
58			/* number of centuries since 1700 whose modulo of 400 is 0 */
59			#define quad_centuries_since_1700(yr) \
60			((yr) > 1600 ? ((yr) - 1600) / 400 : 0)
61
62			/* number of leap years between year 1 and this year, not inclusive */
63			#define leap_years_since_year_1(yr) \
64			((yr) / 4 - centuries_since_1700(yr) + quad_centuries_since_1700(yr))
65
66	niro	816	static void center(char *, unsigned, unsigned);
67			static void day_array(unsigned, unsigned, unsigned *);
68			static void trim_trailing_spaces_and_print(char *);
69	niro	532
70			static void blank_string(char *buf, size_t buflen);
71	niro	816	static char build_row(char p, unsigned *dp);
72	niro	532
73			#define DAY_LEN 3 /* 3 spaces per day */
74			#define J_DAY_LEN (DAY_LEN + 1)
75			#define WEEK_LEN 20 /* 7 * 3 - one space at the end */
76			#define J_WEEK_LEN (WEEK_LEN + 7)
77			#define HEAD_SEP 2 /* spaces between day headings */
78
79	niro	816	int cal_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
80	niro	984	int cal_main(int argc UNUSED_PARAM, char **argv)
81	niro	532	{
82			struct tm zero_tm;
83			time_t now;
84	niro	816	unsigned month, year, flags, i;
85	niro	532	char *month_names[12];
86	niro	984	/* normal heading: */
87			/* "Su Mo Tu We Th Fr Sa" */
88			/* -j heading: */
89			/* " Su Mo Tu We Th Fr Sa" */
90			char day_headings[ENABLE_FEATURE_ASSUME_UNICODE ? 28 * 6 : 28];
91			IF_FEATURE_ASSUME_UNICODE(char *hp = day_headings;)
92	niro	532	char buf[40];
93
94	niro	984	init_unicode();
95
96	niro	816	flags = getopt32(argv, "jy");
97			/* This sets julian = flags & 1: */
98			option_mask32 &= 1;
99			month = 0;
100	niro	532	argv += optind;
101
102	niro	984	if (!argv[0]) {
103			struct tm *ptm;
104	niro	532
105			time(&now);
106	niro	984	ptm = localtime(&now);
107			year = ptm->tm_year + 1900;
108	niro	816	if (!(flags & 2)) { /* no -y */
109	niro	984	month = ptm->tm_mon + 1;
110	niro	532	}
111			} else {
112	niro	984	if (argv[1]) {
113			if (argv[2]) {
114			bb_show_usage();
115			}
116	niro	816	month = xatou_range(*argv++, 1, 12);
117	niro	532	}
118	niro	816	year = xatou_range(*argv, 1, 9999);
119	niro	532	}
120
121	niro	816	blank_string(day_headings, sizeof(day_headings) - 7 + 7*julian);
122	niro	532
123			i = 0;
124			do {
125			zero_tm.tm_mon = i;
126	niro	984	/* full month name according to locale */
127	niro	532	strftime(buf, sizeof(buf), "%B", &zero_tm);
128			month_names[i] = xstrdup(buf);
129
130			if (i < 7) {
131			zero_tm.tm_wday = i;
132	niro	984	/* abbreviated weekday name according to locale */
133	niro	532	strftime(buf, sizeof(buf), "%a", &zero_tm);
134	niro	984	#if ENABLE_FEATURE_ASSUME_UNICODE
135			if (julian)
136			*hp++ = ' ';
137			{
138			char *two_wchars = unicode_cut_nchars(2, buf);
139			strcpy(hp, two_wchars);
140			free(two_wchars);
141			}
142			hp += strlen(hp);
143			*hp++ = ' ';
144			#else
145	niro	532	strncpy(day_headings + i * (3+julian) + julian, buf, 2);
146	niro	984	#endif
147	niro	532	}
148			} while (++i < 12);
149	niro	984	IF_FEATURE_ASSUME_UNICODE(hp[-1] = '\0';)
150	niro	532
151			if (month) {
152	niro	816	unsigned row, len, days[MAXDAYS];
153			unsigned *dp = days;
154	niro	532	char lineout[30];
155
156			day_array(month, year, dp);
157			len = sprintf(lineout, "%s %d", month_names[month - 1], year);
158			printf("%*s%s\n%s\n",
159			((7*julian + WEEK_LEN) - len) / 2, "",
160			lineout, day_headings);
161			for (row = 0; row < 6; row++) {
162			build_row(lineout, dp)[0] = '\0';
163			dp += 7;
164			trim_trailing_spaces_and_print(lineout);
165			}
166			} else {
167	niro	816	unsigned row, which_cal, week_len, days[12][MAXDAYS];
168			unsigned *dp;
169	niro	532	char lineout[80];
170
171	niro	984	sprintf(lineout, "%u", year);
172	niro	532	center(lineout,
173			(WEEK_LEN * 3 + HEAD_SEP * 2)
174			+ julian * (J_WEEK_LEN * 2 + HEAD_SEP
175			- (WEEK_LEN * 3 + HEAD_SEP * 2)),
176			0);
177			puts("\n"); /* two \n's */
178			for (i = 0; i < 12; i++) {
179			day_array(i + 1, year, days[i]);
180			}
181			blank_string(lineout, sizeof(lineout));
182			week_len = WEEK_LEN + julian * (J_WEEK_LEN - WEEK_LEN);
183			for (month = 0; month < 12; month += 3-julian) {
184			center(month_names[month], week_len, HEAD_SEP);
185			if (!julian) {
186			center(month_names[month + 1], week_len, HEAD_SEP);
187			}
188			center(month_names[month + 2 - julian], week_len, 0);
189			printf("\n%s%*s%s", day_headings, HEAD_SEP, "", day_headings);
190			if (!julian) {
191			printf("%*s%s", HEAD_SEP, "", day_headings);
192			}
193	niro	816	bb_putchar('\n');
194	niro	532	for (row = 0; row < (6*7); row += 7) {
195			for (which_cal = 0; which_cal < 3-julian; which_cal++) {
196			dp = days[month + which_cal] + row;
197			build_row(lineout + which_cal * (week_len + 2), dp);
198			}
199			/* blank_string took care of nul termination. */
200			trim_trailing_spaces_and_print(lineout);
201			}
202			}
203			}
204
205	niro	816	fflush_stdout_and_exit(EXIT_SUCCESS);
206	niro	532	}
207
208			/*
209			* day_array --
210			* Fill in an array of 42 integers with a calendar. Assume for a moment
211			* that you took the (maximum) 6 rows in a calendar and stretched them
212			* out end to end. You would have 42 numbers or spaces. This routine
213			* builds that array for any month from Jan. 1 through Dec. 9999.
214			*/
215	niro	816	static void day_array(unsigned month, unsigned year, unsigned *days)
216	niro	532	{
217	niro	816	unsigned long temp;
218			unsigned i;
219			unsigned day, dw, dm;
220	niro	532
221			memset(days, SPACE, MAXDAYS * sizeof(int));
222
223			if ((month == 9) && (year == 1752)) {
224	niro	816	/* Assumes the Gregorian reformation eliminates
225			* 3 Sep. 1752 through 13 Sep. 1752.
226			*/
227			unsigned j_offset = julian * 244;
228	niro	532	size_t oday = 0;
229
230			do {
231			days[oday+2] = sep1752[oday] + j_offset;
232			} while (++oday < sizeof(sep1752));
233
234			return;
235			}
236
237			/* day_in_year
238	niro	816	* return the 1 based day number within the year
239	niro	532	*/
240			day = 1;
241			if ((month > 2) && leap_year(year)) {
242			++day;
243			}
244
245			i = month;
246			while (i) {
247			day += days_in_month[--i];
248			}
249
250			/* day_in_week
251	niro	816	* return the 0 based day number for any date from 1 Jan. 1 to
252			* 31 Dec. 9999. Assumes the Gregorian reformation eliminates
253			* 3 Sep. 1752 through 13 Sep. 1752. Returns Thursday for all
254			* missing days.
255	niro	532	*/
256	niro	816	temp = (long)(year - 1) * 365 + leap_years_since_year_1(year - 1) + day;
257	niro	532	if (temp < FIRST_MISSING_DAY) {
258			dw = ((temp - 1 + SATURDAY) % 7);
259	niro	816	} else {
260	niro	532	dw = (((temp - 1 + SATURDAY) - NUMBER_MISSING_DAYS) % 7);
261			}
262
263			if (!julian) {
264			day = 1;
265			}
266
267			dm = days_in_month[month];
268			if ((month == 2) && leap_year(year)) {
269			++dm;
270			}
271
272	niro	816	do {
273	niro	532	days[dw++] = day++;
274	niro	816	} while (--dm);
275	niro	532	}
276
277			static void trim_trailing_spaces_and_print(char *s)
278			{
279			char *p = s;
280
281			while (*p) {
282			++p;
283			}
284	niro	816	while (p != s) {
285	niro	532	--p;
286	niro	984	if (!isspace(*p)) {
287	niro	532	p[1] = '\0';
288			break;
289			}
290			}
291
292			puts(s);
293			}
294
295	niro	816	static void center(char *str, unsigned len, unsigned separate)
296	niro	532	{
297	niro	816	unsigned n = strlen(str);
298	niro	532	len -= n;
299			printf("%s%s", (len/2) + n, str, (len/2) + (len % 2) + separate, "");
300			}
301
302			static void blank_string(char *buf, size_t buflen)
303			{
304			memset(buf, ' ', buflen);
305			buf[buflen-1] = '\0';
306			}
307
308	niro	816	static char build_row(char p, unsigned *dp)
309	niro	532	{
310	niro	816	unsigned col, val, day;
311	niro	532
312			memset(p, ' ', (julian + DAY_LEN) * 7);
313
314			col = 0;
315			do {
316	niro	816	day = *dp++;
317			if (day != SPACE) {
318	niro	532	if (julian) {
319			++p;
320			if (day >= 100) {
321			*p = '0';
322			p[-1] = (day / 100) + '0';
323			day %= 100;
324			}
325			}
326	niro	816	val = day / 10;
327			if (val > 0) {
328	niro	532	*p = val + '0';
329			}
330			*++p = day % 10 + '0';
331			p += 2;
332			} else {
333			p += DAY_LEN + julian;
334			}
335			} while (++col < 7);
336
337			return p;
338			}
339
340			/*
341			* Copyright (c) 1989, 1993, 1994
342			* The Regents of the University of California. All rights reserved.
343			*
344			* This code is derived from software contributed to Berkeley by
345			* Kim Letkeman.
346			*
347			* Redistribution and use in source and binary forms, with or without
348			* modification, are permitted provided that the following conditions
349			* are met:
350			* 1. Redistributions of source code must retain the above copyright
351			* notice, this list of conditions and the following disclaimer.
352			* 2. Redistributions in binary form must reproduce the above copyright
353			* notice, this list of conditions and the following disclaimer in the
354			* documentation and/or other materials provided with the distribution.
355			* 3. Neither the name of the University nor the names of its contributors
356			* may be used to endorse or promote products derived from this software
357			* without specific prior written permission.
358			*
359			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
360			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
361			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
362			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
363			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
364			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
365			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
366			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
367			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
368			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
369			* SUCH DAMAGE.
370			*/