#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include <string>

#include <general.h>
#include <rfc1123date.h>
#include <stringtools.h>

using namespace std;

char *rfc_months[12]=
 {
  "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
  "Sep", "Oct", "Nov", "Dec"
 };

char *rfc_wdays[12]=
 {
  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
 };

string make_date(const time_t &gm_time, long diff)
 {
  struct tm tm;
  char s[TEXTLEN];
  time_t local_time=gm_time+diff;
  
  tm=*gmtime(&local_time);

  snprintf(s, TEXTLEN, "%s, %02d %s %d %02d:%02d:%02d",
    rfc_wdays[tm.tm_wday], tm.tm_mday, rfc_months[tm.tm_mon],
    tm.tm_year+1900, tm.tm_hour, tm.tm_min, tm.tm_sec);

  string date=s;
  
  snprintf(s, TEXTLEN, " %c%02ld%02ld",
    (diff>=0)?'+':'-', (labs(diff)/3600)%24, labs(diff)%60);

  date+=s;
  
  return date;
 }