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#include "fmt.h"
#include "byte.h"
#include <time.h>
static unsigned int fmt_2digits(char* dest,int i) {
dest[0]=(char)((i/10)+'0');
dest[1]=(char)((i%10)+'0');
return 2;
}
size_t fmt_httpdate(char* dest,time_t t) {
static const char days[] = "SunMonTueWedThuFriSat";
static const char months[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
#ifdef _WIN32
struct tm tmp;
struct tm* x=&tmp;
gmtime_s(&tmp,&t); /* can't recover from when this fails */
#else
struct tm* x=gmtime(&t);
#endif
size_t i;
if (dest==0) return 29;
/* "Sun, 06 Nov 1994 08:49:37 GMT" */
byte_copy(dest,3,days+3*x->tm_wday); i=3;
i+=fmt_str(dest+i,", ");
i+=fmt_2digits(dest+i,x->tm_mday);
i+=fmt_str(dest+i," ");
byte_copy(dest+i,3,months+3*x->tm_mon); i+=3;
i+=fmt_str(dest+i," ");
i+=fmt_2digits(dest+i,(x->tm_year+1900)/100);
i+=fmt_2digits(dest+i,(x->tm_year+1900)%100);
i+=fmt_str(dest+i," ");
i+=fmt_2digits(dest+i,x->tm_hour);
i+=fmt_str(dest+i,":");
i+=fmt_2digits(dest+i,x->tm_min);
i+=fmt_str(dest+i,":");
i+=fmt_2digits(dest+i,x->tm_sec);
i+=fmt_str(dest+i," GMT");
return i;
}
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