Audit cal(1)
1) Update manpage with the num-syntax. 2) Use size_t for years and derivatives. 3) Use putchar instead of printf wherever possible. 4) Update usage(). 5) Style changes.
This commit is contained in:
FRIGN
parent
f140403fca
commit
76ad86b2a3
2
README
2
README
@ -10,7 +10,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
|
||||
UTILITY POSIX 2008 COMPLIANT MISSING OPTIONS
|
||||
------- -------------------- ---------------
|
||||
=*| basename yes none
|
||||
=* cal yes none
|
||||
=*| cal yes none
|
||||
=*| cat yes none
|
||||
=* chgrp yes none
|
||||
=*| chmod yes none
|
||||
|
||||
64
cal.1
64
cal.1
@ -1,4 +1,4 @@
|
||||
.Dd January 18, 2015
|
||||
.Dd March 8, 2015
|
||||
.Dt CAL 1
|
||||
.Os sbase
|
||||
.Sh NAME
|
||||
@ -6,53 +6,55 @@
|
||||
.Nd show calendar
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Op Fl 1 | Fl 3 | Fl y | Fl n Ar nmonths
|
||||
.Op Fl s | Fl m | Fl f Ar firstday
|
||||
.Op Fl c Ar columns
|
||||
.Op Fl 1 | Fl 3 | Fl y | Fl n Ar num
|
||||
.Op Fl s | Fl m | Fl f Ar num
|
||||
.Op Fl c Ar num
|
||||
.Oo Oo Ar month Oc Ar year Oc
|
||||
.Sh DESCRIPTION
|
||||
Print
|
||||
.Ar nmonths
|
||||
calendars side by side beginning with
|
||||
.Nm
|
||||
writes a calendar of
|
||||
.Ar month
|
||||
and
|
||||
.Ar year .
|
||||
Each row of calendars contains at most
|
||||
.Ar columns
|
||||
calendars. The date formatting is obtained using
|
||||
.Xr localtime 3 .
|
||||
.Pp
|
||||
.Ar year
|
||||
or the current month to stdout.
|
||||
If
|
||||
.Ar year
|
||||
is given without
|
||||
.Ar month ,
|
||||
print the whole year, unless overridden by other options.
|
||||
.Nm
|
||||
writes a 3-column calendar of the whole
|
||||
year to stdout.
|
||||
The date formatting is according to
|
||||
.Xr localtime 3 .
|
||||
.Pp
|
||||
The Julian calendar is used until Sep 2, 1752. The Gregorian calendar is used
|
||||
starting the next day on Sep 14, 1752.
|
||||
.Sh OPTIONS
|
||||
.Bl -tag -width Ds
|
||||
.It Fl 1
|
||||
Output current month. This is the default.
|
||||
Print current month. This is the default.
|
||||
.It Fl 3
|
||||
Output previous, current and next month.
|
||||
.It Fl c Ar columns
|
||||
Set number of calendars in a row. The default is 3.
|
||||
.It Fl f Ar firstday
|
||||
Output
|
||||
.Ar firstday
|
||||
Print previous, current and next month.
|
||||
.It Fl c Ar num
|
||||
Print
|
||||
.Ar num
|
||||
calendars in a row. The default is 3.
|
||||
.It Fl f Ar num
|
||||
Set
|
||||
.Ar num
|
||||
(0 is Sunday, 6 is Saturday) as first day of week.
|
||||
.It Fl m
|
||||
Output Monday as first day of week.
|
||||
.It Fl n Ar nmonths
|
||||
Output in total
|
||||
.Ar nmonths
|
||||
starting from the current month.
|
||||
Set Monday as first day of week.
|
||||
.It Fl n Ar num
|
||||
Output
|
||||
.Ar num
|
||||
months starting from and including the current month.
|
||||
.It Fl s
|
||||
Output Sunday as first day of week.
|
||||
.It Fl y Ar year
|
||||
Output an entire
|
||||
.Ar year .
|
||||
Set Sunday as first day of week.
|
||||
.It Fl y
|
||||
Print the entire
|
||||
.Ar year
|
||||
or current year.
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr localtime 3
|
||||
@ -64,5 +66,5 @@ utility is compliant with the
|
||||
specification.
|
||||
.Pp
|
||||
The flags
|
||||
.Op Fl 13ynsmfc
|
||||
.Op Fl 13cfmnsy
|
||||
are an extension to that specification.
|
||||
|
||||
61
cal.c
61
cal.c
@ -1,5 +1,6 @@
|
||||
/* See LICENSE file for copyright and license details. */
|
||||
#include <limits.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <time.h>
|
||||
@ -11,7 +12,7 @@ enum caltype { JULIAN, GREGORIAN };
|
||||
enum { TRANS_YEAR = 1752, TRANS_MONTH = SEP, TRANS_DAY = 2 };
|
||||
|
||||
static int
|
||||
isleap(int year, enum caltype cal)
|
||||
isleap(size_t year, enum caltype cal)
|
||||
{
|
||||
if (cal == GREGORIAN) {
|
||||
if (year % 400 == 0)
|
||||
@ -26,23 +27,23 @@ isleap(int year, enum caltype cal)
|
||||
}
|
||||
|
||||
static int
|
||||
monthlength(int year, int month, enum caltype cal)
|
||||
monthlength(size_t year, int month, enum caltype cal)
|
||||
{
|
||||
int mdays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
|
||||
|
||||
return (month == FEB && isleap(year,cal)) ? 29 : mdays[month];
|
||||
return (month == FEB && isleap(year, cal)) ? 29 : mdays[month];
|
||||
}
|
||||
|
||||
/* From http://www.tondering.dk/claus/cal/chrweek.php#calcdow */
|
||||
static int
|
||||
dayofweek(int year, int month, int dom, enum caltype cal)
|
||||
dayofweek(size_t year, int month, int dom, enum caltype cal)
|
||||
{
|
||||
int m, y, a;
|
||||
size_t y;
|
||||
int m, a;
|
||||
|
||||
month += 1; /* in this formula, 1 <= month <= 12 */
|
||||
a = (14 - month) / 12;
|
||||
a = (13 - month) / 12;
|
||||
y = year - a;
|
||||
m = month + 12 * a - 2;
|
||||
m = month + 12 * a - 1;
|
||||
|
||||
if (cal == GREGORIAN)
|
||||
return (dom + y + y / 4 - y / 100 + y / 400 + (31 * m) / 12) % 7;
|
||||
@ -51,22 +52,19 @@ dayofweek(int year, int month, int dom, enum caltype cal)
|
||||
}
|
||||
|
||||
static void
|
||||
printgrid(int year, int month, int fday, int line)
|
||||
printgrid(size_t year, int month, int fday, int line)
|
||||
{
|
||||
enum caltype cal;
|
||||
int trans; /* are we in the transition from Julian to Gregorian? */
|
||||
int offset, dom, d = 0;
|
||||
int offset, dom, d = 0, trans; /* are we in the transition from Julian to Gregorian? */
|
||||
|
||||
if (year < TRANS_YEAR || (year == TRANS_YEAR && month <= TRANS_MONTH))
|
||||
cal = JULIAN;
|
||||
else
|
||||
cal = GREGORIAN;
|
||||
cal = (year < TRANS_YEAR || (year == TRANS_YEAR && month <= TRANS_MONTH)) ? JULIAN : GREGORIAN;
|
||||
trans = (year == TRANS_YEAR && month == TRANS_MONTH);
|
||||
offset = dayofweek(year, month, 1, cal) - fday;
|
||||
|
||||
if (offset < 0)
|
||||
offset += 7;
|
||||
if (line == 1) {
|
||||
for ( ; d < offset; ++d)
|
||||
for (; d < offset; ++d)
|
||||
printf(" ");
|
||||
dom = 1;
|
||||
} else {
|
||||
@ -74,23 +72,24 @@ printgrid(int year, int month, int fday, int line)
|
||||
if (trans && !(line == 2 && fday == 3))
|
||||
dom += 11;
|
||||
}
|
||||
for ( ; d < 7 && dom <= monthlength(year, month, cal); ++d, ++dom) {
|
||||
for (; d < 7 && dom <= monthlength(year, month, cal); ++d, ++dom) {
|
||||
printf("%2d ", dom);
|
||||
if (trans && dom==TRANS_DAY)
|
||||
if (trans && dom == TRANS_DAY)
|
||||
dom += 11;
|
||||
}
|
||||
for ( ; d < 7; ++d)
|
||||
for (; d < 7; ++d)
|
||||
printf(" ");
|
||||
}
|
||||
|
||||
static void
|
||||
drawcal(int year, int month, int ncols, int nmons, int fday)
|
||||
drawcal(size_t year, int month, size_t ncols, size_t nmons, int fday)
|
||||
{
|
||||
char *smon[] = {" January", " February", " March", " April",
|
||||
" May", " June", " July", " August",
|
||||
"September", " October", " November", " December" };
|
||||
char *days[] = { "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa", };
|
||||
int m, n, col, cur_year, cur_month, line, dow;
|
||||
size_t m, n, col, cur_year, cur_month, dow;
|
||||
int line;
|
||||
|
||||
for (m = 0; m < nmons; ) {
|
||||
n = m;
|
||||
@ -101,16 +100,16 @@ drawcal(int year, int month, int ncols, int nmons, int fday)
|
||||
cur_month -= 12;
|
||||
cur_year += 1;
|
||||
}
|
||||
printf(" %s %d ", smon[cur_month], cur_year);
|
||||
printf(" %s %zu ", smon[cur_month], cur_year);
|
||||
printf(" ");
|
||||
}
|
||||
printf("\n");
|
||||
putchar('\n');
|
||||
for (col = 0, m = n; m < nmons && col < ncols; ++col, ++m) {
|
||||
for (dow = fday; dow < (fday + 7); ++dow)
|
||||
printf("%s ", days[dow % 7]);
|
||||
printf(" ");
|
||||
}
|
||||
printf("\n");
|
||||
putchar('\n');
|
||||
for (line = 1; line <= 6; ++line) {
|
||||
for (col = 0, m = n; m < nmons && col < ncols; ++col, ++m) {
|
||||
cur_year = year + m / 12;
|
||||
@ -122,7 +121,7 @@ drawcal(int year, int month, int ncols, int nmons, int fday)
|
||||
printgrid(cur_year, cur_month, fday, line);
|
||||
printf(" ");
|
||||
}
|
||||
printf("\n");
|
||||
putchar('\n');
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -130,16 +129,17 @@ drawcal(int year, int month, int ncols, int nmons, int fday)
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
eprintf("usage: %s [-1 | -3 | -y | -n nmonths] "
|
||||
"[-s | -m | -f firstday] [-c columns] [[month] year]\n", argv0);
|
||||
eprintf("usage: %s [-1 | -3 | -y | -n num] "
|
||||
"[-s | -m | -f num] [-c num] [[month] year]\n", argv0);
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct tm *ltime;
|
||||
int year, ncols, nmons, month, fday;
|
||||
time_t now;
|
||||
size_t year, ncols, nmons;
|
||||
int fday, month;
|
||||
|
||||
now = time(NULL);
|
||||
ltime = localtime(&now);
|
||||
@ -156,14 +156,13 @@ main(int argc, char *argv[])
|
||||
break;
|
||||
case '3':
|
||||
nmons = 3;
|
||||
month -= 1;
|
||||
if (month == 0) {
|
||||
if (--month == 0) {
|
||||
month = 12;
|
||||
year--;
|
||||
}
|
||||
break;
|
||||
case 'c':
|
||||
ncols = estrtonum(EARGF(usage()), 0, INT_MAX);
|
||||
ncols = estrtonum(EARGF(usage()), 0, MIN(SIZE_MAX, LLONG_MAX));
|
||||
break;
|
||||
case 'f':
|
||||
fday = estrtonum(EARGF(usage()), 0, 6);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user