-/* NOTE:
- *
- * Apparently, all "Steven J. Merrifield" did was grab the util-linux cal applet,
- * spend maybe 5 minutes integrating it into busybox, slapped a copyright on it,
- * and submitted it. I certainly saw no evidence of any attempt at size reduction.
- * Not only do I consider his copyright below meaningless, I also consider his
- * actions shameful.
- *
- * Manuel Novoa III (mjn3@codepoet.org)
- */
-
+/* vi: set sw=4 ts=4: */
/*
* Calendar implementation for busybox
*
- * Copyright (C) 2001 by Steven J. Merrifield <steve@labyrinth.net.au>
- *
* See original copyright at the end of this file
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
-*/
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
/* 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
* Major size reduction... over 50% (>1.5k) on i386.
*/
-#include <sys/types.h>
-#include <ctype.h>
-#include <err.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
+//usage:#define cal_trivial_usage
+//usage: "[-jy] [[MONTH] YEAR]"
+//usage:#define cal_full_usage "\n\n"
+//usage: "Display a calendar\n"
+//usage: "\n -j Use julian dates"
+//usage: "\n -y Display the entire year"
-#include "busybox.h"
+#include "libbb.h"
+#include "unicode.h"
-#ifdef CONFIG_LOCALE_SUPPORT
-#include <locale.h>
-#endif
+/* 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 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 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 char days_in_month[] = {
+static const unsigned char days_in_month[] ALIGN1 = {
0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
-static const char sep1752[] = {
- 1, 2, 14, 15, 16,
+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
};
-static int julian;
+/* Set to 0 or 1 in main */
+#define julian ((unsigned)option_mask32)
-/* leap year -- account for gregorian reformation in 1752 */
-#define leap_year(yr) \
- ((yr) <= 1752 ? !((yr) % 4) : \
- (!((yr) % 4) && ((yr) % 100)) || !((yr) % 400))
-
-static int is_leap_year(int year)
+/* leap year -- account for Gregorian reformation in 1752 */
+static int leap_year(unsigned yr)
{
- return leap_year(year);
+ if (yr <= 1752)
+ return !(yr % 4);
+ return (!(yr % 4) && (yr % 100)) || !(yr % 400);
}
-#undef leap_year
-#define leap_year(yr) is_leap_year(yr)
/* number of centuries since 1700, not inclusive */
#define centuries_since_1700(yr) \
#define leap_years_since_year_1(yr) \
((yr) / 4 - centuries_since_1700(yr) + quad_centuries_since_1700(yr))
-static void center __P((char *, int, int));
-static void day_array __P((int, int, int *));
-static void trim_trailing_spaces_and_print __P((char *));
+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, int *dp);
+static char *build_row(char *p, unsigned *dp);
#define DAY_LEN 3 /* 3 spaces per day */
#define J_DAY_LEN (DAY_LEN + 1)
#define J_WEEK_LEN (WEEK_LEN + 7)
#define HEAD_SEP 2 /* spaces between day headings */
-int cal_main(int argc, char **argv)
+int cal_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int cal_main(int argc UNUSED_PARAM, char **argv)
{
- struct tm *local_time;
struct tm zero_tm;
time_t now;
- int month, year, flags, i;
+ unsigned month, year, flags, i;
char *month_names[12];
- char day_headings[28]; /* 28 for julian, 21 for nonjulian */
+ /* normal heading: */
+ /* "Su Mo Tu We Th Fr Sa" */
+ /* -j heading: */
+ /* " Su Mo Tu We Th Fr Sa" */
+ char day_headings[ENABLE_UNICODE_SUPPORT ? 28 * 6 : 28];
+ IF_UNICODE_SUPPORT(char *hp = day_headings;)
char buf[40];
-#ifdef CONFIG_LOCALE_SUPPORT
- setlocale(LC_TIME, "");
-#endif
-
- flags = bb_getopt_ulflags(argc, argv, "jy");
-
- julian = flags & 1;
-
- argv += optind;
+ init_unicode();
+ flags = getopt32(argv, "jy");
+ /* This sets julian = flags & 1: */
+ option_mask32 &= 1;
month = 0;
+ argv += optind;
- if ((argc -= optind) > 2) {
- bb_show_usage();
- }
+ if (!argv[0]) {
+ struct tm *ptm;
- if (!argc) {
time(&now);
- local_time = localtime(&now);
- year = local_time->tm_year + 1900;
- if (!(flags & 2)) {
- month = local_time->tm_mon + 1;
+ ptm = localtime(&now);
+ year = ptm->tm_year + 1900;
+ if (!(flags & 2)) { /* no -y */
+ month = ptm->tm_mon + 1;
}
} else {
- if (argc == 2) {
- month = bb_xgetularg10_bnd(*argv++, 1, 12);
+ if (argv[1]) {
+ if (argv[2]) {
+ bb_show_usage();
+ }
+ if (!(flags & 2)) { /* no -y */
+ month = xatou_range(*argv, 1, 12);
+ }
+ argv++;
}
- year = bb_xgetularg10_bnd(*argv, 1, 9999);
+ year = xatou_range(*argv, 1, 9999);
}
- blank_string(day_headings, sizeof(day_headings) - 7 + 7*julian);
+ 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] = bb_xstrdup(buf);
+ 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_UNICODE_SUPPORT
+ if (julian)
+ *hp++ = ' ';
+ {
+ char *two_wchars = unicode_conv_to_printable_fixedwidth(/*NULL,*/ buf, 2);
+ 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_UNICODE_SUPPORT(hp[-1] = '\0';)
if (month) {
- int row, len, days[MAXDAYS];
- int *dp = days;
+ 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);
- bb_printf("%*s%s\n%s\n",
- ((7*julian + WEEK_LEN) - len) / 2, "",
- lineout, day_headings);
+ 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 {
- int row, which_cal, week_len, days[12][MAXDAYS];
- int *dp;
+ unsigned row, which_cal, week_len, days[12][MAXDAYS];
+ unsigned *dp;
char lineout[80];
-
- sprintf(lineout, "%d", year);
+
+ 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);
+ (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]);
center(month_names[month + 1], week_len, HEAD_SEP);
}
center(month_names[month + 2 - julian], week_len, 0);
- bb_printf("\n%s%*s%s", day_headings, HEAD_SEP, "", day_headings);
+ printf("\n%s%*s%s", day_headings, HEAD_SEP, "", day_headings);
if (!julian) {
- bb_printf("%*s%s", HEAD_SEP, "", day_headings);
+ printf("%*s%s", HEAD_SEP, "", day_headings);
}
- putchar('\n');
+ 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;
}
}
- bb_fflush_stdout_and_exit(0);
+ fflush_stdout_and_exit(EXIT_SUCCESS);
}
/*
* 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(int month, int year, int *days)
+static void day_array(unsigned month, unsigned year, unsigned *days)
{
- long temp;
- int i;
- int j_offset;
- int day, dw, dm;
+ unsigned long temp;
+ unsigned i;
+ unsigned day, dw, dm;
memset(days, SPACE, MAXDAYS * sizeof(int));
if ((month == 9) && (year == 1752)) {
- j_offset = julian * 244;
- i = 0;
+ /* Assumes the Gregorian reformation eliminates
+ * 3 Sep. 1752 through 13 Sep. 1752.
+ */
+ unsigned j_offset = julian * 244;
+ size_t oday = 0;
+
do {
- days[i+2] = sep1752[i] + j_offset;
- } while (++i < sizeof(sep1752));
+ days[oday+2] = sep1752[oday] + j_offset;
+ } while (++oday < sizeof(sep1752));
return;
}
/* day_in_year
- * return the 1 based day number within the year
+ * return the 1 based day number within the year
*/
day = 1;
if ((month > 2) && leap_year(year)) {
}
/* 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.
+ * 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.
*/
- dw = THURSDAY;
- temp = (long)(year - 1) * 365 + leap_years_since_year_1(year - 1)
- + day;
+ temp = (long)(year - 1) * 365 + leap_years_since_year_1(year - 1) + day;
if (temp < FIRST_MISSING_DAY) {
dw = ((temp - 1 + SATURDAY) % 7);
- } else if (temp >= (FIRST_MISSING_DAY + NUMBER_MISSING_DAYS)) {
+ } else {
dw = (((temp - 1 + SATURDAY) - NUMBER_MISSING_DAYS) % 7);
}
++dm;
}
- while (dm) {
+ do {
days[dw++] = day++;
- --dm;
- }
+ } while (--dm);
}
static void trim_trailing_spaces_and_print(char *s)
while (*p) {
++p;
}
- while (p > s) {
+ while (p != s) {
--p;
- if (!(isspace)(*p)) { /* We want the function... not the inline. */
+ if (!isspace(*p)) {
p[1] = '\0';
break;
}
puts(s);
}
-static void center(char *str, int len, int separate)
+static void center(char *str, unsigned len, unsigned separate)
{
- int n = strlen(str);
+ unsigned n = strlen(str);
len -= n;
- bb_printf("%*s%*s", (len/2) + n, str, (len/2) + (len % 2) + separate, "");
+ printf("%*s%*s", (len/2) + n, str, (len/2) + (len % 2) + separate, "");
}
static void blank_string(char *buf, size_t buflen)
buf[buflen-1] = '\0';
}
-static char *build_row(char *p, int *dp)
+static char *build_row(char *p, unsigned *dp)
{
- int col, val, day;
-
+ unsigned col, val, day;
+
memset(p, ' ', (julian + DAY_LEN) * 7);
col = 0;
do {
- if ((day = *dp++) != SPACE) {
+ day = *dp++;
+ if (day != SPACE) {
if (julian) {
- *++p;
+ ++p;
if (day >= 100) {
*p = '0';
p[-1] = (day / 100) + '0';
day %= 100;
}
}
- if ((val = day / 10) > 0) {
+ val = day / 10;
+ if (val > 0) {
*p = val + '0';
}
*++p = day % 10 + '0';
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
-
-
projects / oweals / busybox.git / blobdiff