mirror of
https://github.com/reactos/reactos.git
synced 2024-11-02 12:53:33 +00:00
326 lines
9.1 KiB
C
326 lines
9.1 KiB
C
/*
|
|
* COPYRIGHT: LGPL, See LGPL.txt in the top level directory
|
|
* PROJECT: ReactOS CRT library
|
|
* FILE: lib/sdk/crt/time/strftime.c
|
|
* PURPOSE:
|
|
* PROGRAMER:
|
|
*/
|
|
#include <precomp.h>
|
|
|
|
static inline BOOL strftime_date(char *str, size_t *pos, size_t max,
|
|
BOOL alternate, const struct tm *mstm, MSVCRT___lc_time_data *time_data)
|
|
{
|
|
char *format;
|
|
SYSTEMTIME st;
|
|
size_t ret;
|
|
|
|
st.wYear = mstm->tm_year + 1900;
|
|
st.wMonth = mstm->tm_mon + 1;
|
|
st.wDayOfWeek = mstm->tm_wday;
|
|
st.wDay = mstm->tm_mday;
|
|
st.wHour = mstm->tm_hour;
|
|
st.wMinute = mstm->tm_min;
|
|
st.wSecond = mstm->tm_sec;
|
|
st.wMilliseconds = 0;
|
|
|
|
format = alternate ? time_data->str.names.date : time_data->str.names.short_date;
|
|
ret = GetDateFormatA(time_data->lcid, 0, &st, format, NULL, 0);
|
|
if(ret && ret<max-*pos)
|
|
ret = GetDateFormatA(time_data->lcid, 0, &st, format, str+*pos, max-*pos);
|
|
if(!ret) {
|
|
*str = 0;
|
|
*_errno() = EINVAL;
|
|
return FALSE;
|
|
}else if(ret > max-*pos) {
|
|
*str = 0;
|
|
*_errno() = ERANGE;
|
|
return FALSE;
|
|
}
|
|
*pos += ret-1;
|
|
return TRUE;
|
|
}
|
|
|
|
static inline BOOL strftime_time(char *str, size_t *pos, size_t max,
|
|
const struct tm *mstm, MSVCRT___lc_time_data *time_data)
|
|
{
|
|
SYSTEMTIME st;
|
|
size_t ret;
|
|
|
|
st.wYear = mstm->tm_year + 1900;
|
|
st.wMonth = mstm->tm_mon + 1;
|
|
st.wDayOfWeek = mstm->tm_wday;
|
|
st.wDay = mstm->tm_mday;
|
|
st.wHour = mstm->tm_hour;
|
|
st.wMinute = mstm->tm_min;
|
|
st.wSecond = mstm->tm_sec;
|
|
st.wMilliseconds = 0;
|
|
|
|
ret = GetTimeFormatA(time_data->lcid, 0, &st, time_data->str.names.time, NULL, 0);
|
|
if(ret && ret<max-*pos)
|
|
ret = GetTimeFormatA(time_data->lcid, 0, &st, time_data->str.names.time,
|
|
str+*pos, max-*pos);
|
|
if(!ret) {
|
|
*str = 0;
|
|
*_errno() = EINVAL;
|
|
return FALSE;
|
|
}else if(ret > max-*pos) {
|
|
*str = 0;
|
|
*_errno() = ERANGE;
|
|
return FALSE;
|
|
}
|
|
*pos += ret-1;
|
|
return TRUE;
|
|
}
|
|
|
|
static inline BOOL strftime_str(char *str, size_t *pos, size_t max, char *src)
|
|
{
|
|
size_t len = strlen(src);
|
|
if(len > max-*pos) {
|
|
*str = 0;
|
|
*_errno() = ERANGE;
|
|
return FALSE;
|
|
}
|
|
|
|
memcpy(str+*pos, src, len);
|
|
*pos += len;
|
|
return TRUE;
|
|
}
|
|
|
|
static inline BOOL strftime_int(char *str, size_t *pos, size_t max,
|
|
int src, int prec, int l, int h)
|
|
{
|
|
size_t len;
|
|
|
|
if(src<l || src>h) {
|
|
*str = 0;
|
|
*_errno() = EINVAL;
|
|
return FALSE;
|
|
}
|
|
|
|
len = _snprintf(str+*pos, max-*pos, "%0*d", prec, src);
|
|
if(len == -1) {
|
|
*str = 0;
|
|
*_errno() = ERANGE;
|
|
return FALSE;
|
|
}
|
|
|
|
*pos += len;
|
|
return TRUE;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _Strftime (MSVCRT.@)
|
|
*/
|
|
size_t CDECL _Strftime(char *str, size_t max, const char *format,
|
|
const struct tm *mstm, MSVCRT___lc_time_data *time_data)
|
|
{
|
|
size_t ret, tmp;
|
|
BOOL alternate;
|
|
|
|
TRACE("(%p %ld %s %p %p)\n", str, max, format, mstm, time_data);
|
|
|
|
if(!str || !format) {
|
|
if(str && max)
|
|
*str = 0;
|
|
*_errno() = EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
if(!time_data)
|
|
time_data = get_locinfo()->lc_time_curr;
|
|
|
|
for(ret=0; *format && ret<max; format++) {
|
|
if(*format != '%') {
|
|
str[ret++] = *format;
|
|
continue;
|
|
}
|
|
|
|
format++;
|
|
if(*format == '#') {
|
|
alternate = TRUE;
|
|
format++;
|
|
}else {
|
|
alternate = FALSE;
|
|
}
|
|
|
|
if(!mstm)
|
|
goto einval_error;
|
|
|
|
switch(*format) {
|
|
case 'c':
|
|
if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
|
|
return 0;
|
|
if(ret < max)
|
|
str[ret++] = ' ';
|
|
if(!strftime_time(str, &ret, max, mstm, time_data))
|
|
return 0;
|
|
break;
|
|
case 'x':
|
|
if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
|
|
return 0;
|
|
break;
|
|
case 'X':
|
|
if(!strftime_time(str, &ret, max, mstm, time_data))
|
|
return 0;
|
|
break;
|
|
case 'a':
|
|
if(mstm->tm_wday<0 || mstm->tm_wday>6)
|
|
goto einval_error;
|
|
if(!strftime_str(str, &ret, max, time_data->str.names.short_wday[mstm->tm_wday]))
|
|
return 0;
|
|
break;
|
|
case 'A':
|
|
if(mstm->tm_wday<0 || mstm->tm_wday>6)
|
|
goto einval_error;
|
|
if(!strftime_str(str, &ret, max, time_data->str.names.wday[mstm->tm_wday]))
|
|
return 0;
|
|
break;
|
|
case 'b':
|
|
if(mstm->tm_mon<0 || mstm->tm_mon>11)
|
|
goto einval_error;
|
|
if(!strftime_str(str, &ret, max, time_data->str.names.short_mon[mstm->tm_mon]))
|
|
return 0;
|
|
break;
|
|
case 'B':
|
|
if(mstm->tm_mon<0 || mstm->tm_mon>11)
|
|
goto einval_error;
|
|
if(!strftime_str(str, &ret, max, time_data->str.names.mon[mstm->tm_mon]))
|
|
return 0;
|
|
break;
|
|
case 'd':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 0, 31))
|
|
return 0;
|
|
break;
|
|
case 'H':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
|
|
return 0;
|
|
break;
|
|
case 'I':
|
|
tmp = mstm->tm_hour;
|
|
if(tmp > 12)
|
|
tmp -= 12;
|
|
else if(!tmp)
|
|
tmp = 12;
|
|
if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 1, 12))
|
|
return 0;
|
|
break;
|
|
case 'j':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_yday+1, alternate ? 0 : 3, 1, 366))
|
|
return 0;
|
|
break;
|
|
case 'm':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
|
|
return 0;
|
|
break;
|
|
case 'M':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
|
|
return 0;
|
|
break;
|
|
case 'p':
|
|
if(mstm->tm_hour<0 || mstm->tm_hour>23)
|
|
goto einval_error;
|
|
if(!strftime_str(str, &ret, max, mstm->tm_hour<12 ?
|
|
time_data->str.names.am : time_data->str.names.pm))
|
|
return 0;
|
|
break;
|
|
case 'S':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, 59))
|
|
return 0;
|
|
break;
|
|
case 'w':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_wday, 0, 0, 6))
|
|
return 0;
|
|
break;
|
|
case 'y':
|
|
if(!strftime_int(str, &ret, max, mstm->tm_year%100, alternate ? 0 : 2, 0, 99))
|
|
return 0;
|
|
break;
|
|
case 'Y':
|
|
tmp = 1900+mstm->tm_year;
|
|
if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 4, 0, 9999))
|
|
return 0;
|
|
break;
|
|
case 'z':
|
|
case 'Z':
|
|
_tzset();
|
|
if(_get_tzname(&tmp, str+ret, max-ret, mstm->tm_isdst ? 1 : 0))
|
|
return 0;
|
|
ret += tmp;
|
|
break;
|
|
case 'U':
|
|
case 'W':
|
|
if(mstm->tm_wday<0 || mstm->tm_wday>6 || mstm->tm_yday<0 || mstm->tm_yday>365)
|
|
goto einval_error;
|
|
if(*format == 'U')
|
|
tmp = mstm->tm_wday;
|
|
else if(!mstm->tm_wday)
|
|
tmp = 6;
|
|
else
|
|
tmp = mstm->tm_wday-1;
|
|
|
|
tmp = mstm->tm_yday/7 + (tmp <= ((unsigned)mstm->tm_yday%7));
|
|
if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 0, 53))
|
|
return 0;
|
|
break;
|
|
case '%':
|
|
str[ret++] = '%';
|
|
break;
|
|
default:
|
|
WARN("unknown format %c\n", *format);
|
|
goto einval_error;
|
|
}
|
|
}
|
|
|
|
if(ret == max) {
|
|
if(max)
|
|
*str = 0;
|
|
*_errno() = ERANGE;
|
|
return 0;
|
|
}
|
|
|
|
str[ret] = 0;
|
|
return ret;
|
|
|
|
einval_error:
|
|
*str = 0;
|
|
*_errno() = EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* strftime (MSVCRT.@)
|
|
*/
|
|
size_t CDECL strftime( char *str, size_t max, const char *format,
|
|
const struct tm *mstm )
|
|
{
|
|
return _Strftime(str, max, format, mstm, NULL);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* wcsftime (MSVCRT.@)
|
|
*/
|
|
size_t CDECL wcsftime( wchar_t *str, size_t max,
|
|
const wchar_t *format, const struct tm *mstm )
|
|
{
|
|
char *s, *fmt;
|
|
size_t len;
|
|
|
|
TRACE("%p %ld %s %p\n", str, max, debugstr_w(format), mstm );
|
|
|
|
len = WideCharToMultiByte( CP_ACP, 0, format, -1, NULL, 0, NULL, NULL );
|
|
if (!(fmt = malloc( len ))) return 0;
|
|
WideCharToMultiByte( CP_ACP, 0, format, -1, fmt, len, NULL, NULL );
|
|
|
|
if ((s = malloc( max*4 )))
|
|
{
|
|
if (!strftime( s, max*4, fmt, mstm )) s[0] = 0;
|
|
len = MultiByteToWideChar( CP_ACP, 0, s, -1, str, max );
|
|
if (len) len--;
|
|
free( s );
|
|
}
|
|
else len = 0;
|
|
|
|
free( fmt );
|
|
return len;
|
|
}
|