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SFLVersion 2.11
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SFL Version 2.11 |
#include "sflconv.h"
char *
conv_date_pict (
long date,
const char *picture)
Converts a date to a string using a picture. The picture is composed of any combination of these formats:
| cc | century 2 digits, 01-99 |
| y | day of year, 1-366 |
| yy | year 2 digits, 00-99 |
| yyyy | year 4 digits, 100-9999 |
| m | month, 1-12 |
| mm | month, 01-12 |
| mmm | month, 3 letters |
| mmmm | month, full name |
| MMM | month, 3 letters, ucase |
| MMMM | month, full name, ucase |
| d | day, 1-31 |
| dd | day, 01-31 |
| ddd | day of week, Sun-Sat |
| dddd | day of week, Sunday- Saturday |
| DDD | day of week, SUN-SAT |
| DDDD | day of week, SUNDAY-SATURDAY |
| w | day of week, 1-7 (1=Sunday) |
| ww | week of year, 1-53 |
| q | year quarter, 1-4 |
| \x | literal character x |
| other | literal character |
puts (conv_date_pict (19951202, "mm d, yy"));
Dec 2, 95
puts (conv_date_pict (19951202, "d mmm, yy"));
2 Dec, 95
{
static char
*month_name [] =
{
"January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December"
},
*day_name [] =
{
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"
},
formatted [FORMAT_MAX + 1]; /* Formatted return string */
int
century, /* Century component of date */
year, /* Year component of date */
month, /* Month component of date */
day, /* Day component of date */
cursize; /* Size of current component */
char
*dest, /* Store formatted data here */
ch, /* Next character in picture */
lastch = '0'; /* Last character we output */
long
full_date = date;
conv_reason = 0; /* No conversion errors so far */
/* Zero date is returned as empty string */
if (date == 0)
{
strclr (formatted);
return (formatted);
}
default century (&full_date);
century = GET_CENTURY (full_date);
year = GET_YEAR (full_date);
month = GET_MONTH (full_date);
day = GET_DAY (full_date);
ASSERT (month > 0 && month <= 12);
ASSERT (day > 0 && day <= 31);
/* Scan through picture, converting each component */
dest = formatted;
*dest = 0; /* string is empty */
while (*picture)
{
/* Get character and count number of occurences */
ch = *picture++;
for (cursize = 1; *picture == ch; cursize++)
picture++;
switch (ch)
{
/* cc century 2 digits, 01-99 */
case 'c':
if (cursize == 2)
sprintf (dest, "%02d", century);
break;
/* y day of year, 1-366 */
/* yy year 2 digits, 00-99 */
/* yyyy year 4 digits, 0100-9999 */
case 'y': /* y = day of year */
if (cursize == 1)
sprintf (dest, "%d", julian date (full_date));
else
if (cursize == 2)
sprintf (dest, "%02d", year);
else
if (cursize == 4)
sprintf (dest, "%02d%02d", century, year);
break;
/* m month, 1-12 */
/* mm month, 01-12 */
/* mmm month, 3 letters */
/* mmmm month, full name */
case 'm':
if (cursize == 1)
sprintf (dest, (isdigit (lastch)? "%2d": "%d"), month);
else
if (cursize == 2)
sprintf (dest, "%02d", month);
else
if (cursize == 3)
{
memcpy (dest, month_name [month - 1], 3);
dest [3] = 0;
}
else
if (cursize == 4)
strcpy (dest, month_name [month - 1]);
break;
/* MMM month, 3-letters, ucase */
/* MMMM month, full name, ucase */
case 'M':
if (cursize == 3)
{
memcpy (dest, month_name [month - 1], 3);
dest [3] = 0;
strupc (dest);
}
else
if (cursize == 4)
{
strcpy (dest, month_name [month - 1]);
strupc (dest);
}
break;
/* d day, 1-31 */
/* dd day, 01-31 */
/* ddd day of week, Sun-Sat */
/* dddd day of week, Sunday-Saturday */
case 'd':
if (cursize == 1)
sprintf (dest, (isdigit (lastch)? "%2d": "%d"), day);
else
if (cursize == 2)
sprintf (dest, "%02d", day);
else
if (cursize == 3)
{
memcpy (dest, day_name [day of week (full_date)], 3);
dest [3] = 0;
}
else
if (cursize == 4)
strcpy (dest, day_name [day of week (full_date)]);
break;
/* DDD day of week, SUN-SAT */
/* DDDD day of week, SUNDAY-SATURDAY */
case 'D':
if (cursize == 3)
{
memcpy (dest, day_name [day of week (full_date)], 3);
dest [3] = 0;
strupc (dest);
}
else
if (cursize == 4)
{
strcpy (dest, day_name [day of week (full_date)]);
strupc (dest);
}
break;
/* w day of week, 1-7 (1=Sunday) */
/* ww week of year, 1-53 */
case 'w':
if (cursize == 1)
sprintf (dest, "%d", day of week (full_date) + 1);
else
if (cursize == 2)
sprintf (dest, "%d", week of year (full_date));
break;
/* q year quarter, 1-4 */
case 'q':
if (cursize == 1)
sprintf (dest, "%d", year quarter (full_date));
break;
/* \x literal character x */
case '\\':
ch = *picture++;
}
if (*dest) /* If something was output, */
while (*dest) /* skip to end of string */
dest++;
else
while (cursize--) /* Else output ch once or more */
*dest++ = ch; /* and bump dest pointer */
lastch = *(dest - 1); /* Get previous character */
*dest = 0; /* Terminate the string nicely */
}
return (formatted);
}
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