mirror of
https://github.com/cc65/cc65.git
synced 2024-12-25 02:29:52 +00:00
ed2767e65f
options. This should make use easier. The old names of the pragmas are still available but will cause warnings. git-svn-id: svn://svn.cc65.org/cc65/trunk@4364 b7a2c559-68d2-44c3-8de9-860c34a00d81
225 lines
7.8 KiB
C
225 lines
7.8 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* strftime.c */
|
|
/* */
|
|
/* Convert broken down time to a string in a user specified format */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2002 Ullrich von Bassewitz */
|
|
/* Wacholderweg 14 */
|
|
/* D-70597 Stuttgart */
|
|
/* EMail: uz@musoftware.de */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
|
|
|
|
|
|
/* Use static local variables for speed */
|
|
#pragma static-locals (on);
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* Code */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
size_t __fastcall__ strftime (char* buf, size_t bufsize, const char* format,
|
|
const struct tm* tm)
|
|
{
|
|
static const char* days[7] = {
|
|
"Sunday", "Monday", "Tuesday", "Wednesday",
|
|
"Thursday", "Friday", "Saturday"
|
|
};
|
|
static const char* months[12] = {
|
|
"January", "February", "March", "April", "May", "June",
|
|
"July", "August", "September", "October", "November", "December"
|
|
};
|
|
|
|
unsigned count;
|
|
unsigned len;
|
|
char c;
|
|
char arg[40];
|
|
const char* argptr;
|
|
|
|
/* Copy until we reach the end of the format string or a format specifier */
|
|
count = 0;
|
|
while (1) {
|
|
if (count >= bufsize) {
|
|
/* Not enough buffer space available */
|
|
return 0;
|
|
}
|
|
if ((c = *format++) == '\0') {
|
|
/* End of format string reached */
|
|
*buf = '\0';
|
|
return count;
|
|
}
|
|
if (c == '%') {
|
|
/* Format specifier */
|
|
argptr = arg;
|
|
switch (*format++) {
|
|
|
|
case '%':
|
|
arg[0] = '%';
|
|
arg[1] = '\0';
|
|
break;
|
|
|
|
case 'A':
|
|
argptr = days[tm->tm_wday];
|
|
break;
|
|
|
|
case 'B':
|
|
argptr = months[tm->tm_mon];
|
|
break;
|
|
|
|
case 'D':
|
|
sprintf (arg, "%02d/%02d/%02d", tm->tm_mon + 1,
|
|
tm->tm_mday, tm->tm_year % 100);
|
|
break;
|
|
|
|
case 'F':
|
|
/* C99 */
|
|
sprintf (arg, "%04d-%02d-%02d", tm->tm_year + 1900,
|
|
tm->tm_mon + 1, tm->tm_mday);
|
|
break;
|
|
|
|
case 'H':
|
|
sprintf (arg, "%02d", tm->tm_hour);
|
|
break;
|
|
|
|
case 'I':
|
|
sprintf (arg, "%02d", tm->tm_hour % 12);
|
|
break;
|
|
|
|
case 'M':
|
|
sprintf (arg, "%02d", tm->tm_min);
|
|
break;
|
|
|
|
case 'P':
|
|
/* GNU extension */
|
|
argptr = (tm->tm_hour >= 12)? "pm" : "am";
|
|
break;
|
|
|
|
case 'S':
|
|
sprintf (arg, "%02d", tm->tm_sec);
|
|
break;
|
|
|
|
case 'U':
|
|
sprintf (arg, "%02d", (tm->tm_yday + 7 - tm->tm_wday) / 7);
|
|
break;
|
|
|
|
case 'W':
|
|
sprintf (arg, "%02d",
|
|
(tm->tm_yday + 7 - (tm->tm_wday? tm->tm_wday - 1 : 6)) / 7);
|
|
break;
|
|
|
|
case 'X':
|
|
sprintf (arg, "%02d:%02d:%02d", tm->tm_hour,
|
|
tm->tm_min, tm->tm_sec);
|
|
break;
|
|
|
|
case 'Y':
|
|
sprintf (arg, "%4d", tm->tm_year + 1900);
|
|
break;
|
|
|
|
case 'Z':
|
|
argptr = tm->tm_isdst? _tz.dstname : _tz.tzname;
|
|
break;
|
|
|
|
case 'a':
|
|
sprintf (arg, "%.3s", days[tm->tm_wday]);
|
|
break;
|
|
|
|
case 'b':
|
|
sprintf (arg, "%.3s", months[tm->tm_mon]);
|
|
break;
|
|
|
|
case 'c':
|
|
sprintf (arg, "%.3s %.3s%3d %02d:%02d:%02d %d",
|
|
days[tm->tm_wday], months[tm->tm_mon],
|
|
tm->tm_mday, tm->tm_hour, tm->tm_min,
|
|
tm->tm_sec, tm->tm_year + 1900);
|
|
break;
|
|
|
|
case 'd':
|
|
sprintf (arg, "%02d", tm->tm_mday);
|
|
break;
|
|
|
|
case 'j':
|
|
sprintf (arg, "%03d", tm->tm_yday + 1);
|
|
break;
|
|
|
|
case 'm':
|
|
sprintf (arg, "%02d", tm->tm_mon + 1);
|
|
break;
|
|
|
|
case 'p':
|
|
argptr = (tm->tm_hour >= 12)? "PM" : "AM";
|
|
break;
|
|
|
|
case 'w':
|
|
sprintf (arg, "%d", tm->tm_wday);
|
|
break;
|
|
|
|
case 'x':
|
|
sprintf (arg, "%04d-%02d-%02d", tm->tm_year + 1900,
|
|
tm->tm_mon + 1, tm->tm_mday);
|
|
break;
|
|
|
|
case 'y':
|
|
sprintf (arg, "%02d", tm->tm_year % 100);
|
|
break;
|
|
|
|
default:
|
|
/* Unknown format specifier, convert to empty string */
|
|
arg[0] = '\0';
|
|
break;
|
|
}
|
|
|
|
/* Check if we have enough space to copy the argument string */
|
|
len = strlen (argptr);
|
|
count += len;
|
|
if (count < bufsize) {
|
|
memcpy (buf, argptr, len);
|
|
buf += len;
|
|
}
|
|
|
|
} else {
|
|
|
|
/* No format character, just copy */
|
|
*buf++ = c;
|
|
++count;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|