/* bijou HTTP server for plan 9 by sean caron (scaron@umich.edu) */

#include "main.h"

/* Generate a timestamp for log file entries */
void timestamp(char *ptr) {
    Tm *ti;

    ti = localtime(time(0));

    sprint(ptr, "%02d/%02d/%04d %02d:%02d:%02d", (ti->mon)+1, ti->mday, (ti->year)+1900,
        ti->hour, ti->min, ti->sec);

    return;
}

/* Generate a timestamp suitable for a directory listing */
void file_time(char *ptr, ulong dtime) {
    Tm *ti;

    char month[4];

    ti = gmtime(dtime);

    switch (ti->mon) {
        case 0:
            strcpy(month, "Jan");
            break;

        case 1:
            strcpy(month, "Feb");
            break;

        case 2:
            strcpy(month, "Mar");
            break;

        case 3:
            strcpy(month, "Apr");
            break;

        case 4:
            strcpy(month, "May");
            break;

        case 5:
            strcpy(month, "Jun");
            break;

        case 6:
            strcpy(month, "Jul");
            break;

        case 7:
            strcpy(month, "Aug");
            break;

        case 8:
            strcpy(month, "Sep");
            break;

        case 9:
            strcpy(month, "Oct");
            break;

        case 10:
            strcpy(month, "Nov");
            break;

        case 11:
            strcpy(month, "Dec");
            break;
    }

    sprint(ptr, "%02d-%s-%04d %02d:%02d", ti->mday, month, (ti->year)+1900, ti->hour, ti->min);

    return;
}

/* Generate a RFC1123 compliant timestamp for the Date header field */
void rfc1123_time(char *ptr, ulong tm) {
    Tm *ti;

    char day[4];
    char month[4];

    ti = gmtime(tm);

    switch (ti->wday) {
        case 0:
            strcpy(day, "Sun");
            break;

        case 1:
            strcpy(day, "Mon");
            break;

        case 2:
            strcpy(day, "Tue");
            break;

        case 3:
            strcpy(day, "Wed");
            break;

        case 4:
            strcpy(day, "Thu");
            break;

        case 5:
            strcpy(day, "Fri");
            break;

        case 6:
            strcpy(day, "Sat");
            break;
    }
	
    switch (ti->mon) {
        case 0:
            strcpy(month, "Jan");
            break;

        case 1:
            strcpy(month, "Feb");
            break;

        case 2:
            strcpy(month, "Mar");
            break;

        case 3:
            strcpy(month, "Apr");
            break;

        case 4:
            strcpy(month, "May");
            break;

        case 5:
            strcpy(month, "Jun");
            break;

        case 6:
            strcpy(month, "Jul");
            break;

        case 7:
            strcpy(month, "Aug");
            break;

        case 8:
            strcpy(month, "Sep");
            break;

        case 9:
            strcpy(month, "Oct");
            break;

        case 10:
            strcpy(month, "Nov");
            break;

        case 11:
            strcpy(month, "Dec");
            break;
    }

    sprint(ptr, "%s, %02d %s %04d %02d:%02d:%02d GMT", day, ti->mday, month, (ti->year)+1900, 
        ti->hour, ti->min, ti->sec);

    return;
}