Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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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_iso8601(char* dest,time_t t) {
#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 sizeof("2014-05-27T19:22:16Z")-1;
/* "2014-05-27T19:22:16Z" */
i=fmt_ulong(dest,(x->tm_year+1900));
dest[i++]='-';
i+=fmt_2digits(dest+i,x->tm_mon+1);
dest[i++]='-';
i+=fmt_2digits(dest+i,x->tm_mday);
dest[i++]='T';
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,"Z");
return i;
}