/* Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "apr_portable.h"

#include "apr_time.h"

#include "apr_lib.h"

#include "apr_private.h"

/* System Headers required for time library */

#if APR_HAVE_SYS_TIME_H

#include <sys/time.h>

#endif

#ifdef HAVE_TIME_H

#include <time.h>

#endif

#if APR_HAVE_STRING_H

#include <string.h>

#endif

/* End System Headers */

APR_DECLARE_DATA const char apr_month_snames[12][4] =

{

    "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"

};

APR_DECLARE_DATA const char apr_day_snames[7][4] =

{

    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"

};

apr_status_t apr_rfc822_date(char *date_str, apr_time_t t)

{

    apr_time_exp_t xt;

    const char *s;

    int real_year;

    apr_time_exp_gmt(&xt, t);

    /* example: "Sat, 08 Jan 2000 18:31:41 GMT" */

    /*           12345678901234567890123456789  */

    s = &apr_day_snames[xt.tm_wday][0];

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = ',';

    *date_str++ = ' ';

    *date_str++ = xt.tm_mday / 10 + '0';

    *date_str++ = xt.tm_mday % 10 + '0';

    *date_str++ = ' ';

    s = &apr_month_snames[xt.tm_mon][0];

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = ' ';

    real_year = 1900 + xt.tm_year;

    /* This routine isn't y10k ready. */

    *date_str++ = real_year / 1000 + '0';

    *date_str++ = real_year % 1000 / 100 + '0';

    *date_str++ = real_year % 100 / 10 + '0';

    *date_str++ = real_year % 10 + '0';

    *date_str++ = ' ';

    *date_str++ = xt.tm_hour / 10 + '0';

    *date_str++ = xt.tm_hour % 10 + '0';

    *date_str++ = ':';

    *date_str++ = xt.tm_min / 10 + '0';

    *date_str++ = xt.tm_min % 10 + '0';

    *date_str++ = ':';

    *date_str++ = xt.tm_sec / 10 + '0';

    *date_str++ = xt.tm_sec % 10 + '0';

    *date_str++ = ' ';

    *date_str++ = 'G';

    *date_str++ = 'M';

    *date_str++ = 'T';

    *date_str++ = 0;

    return APR_SUCCESS;

}

apr_status_t apr_ctime(char *date_str, apr_time_t t)

{

    apr_time_exp_t xt;

    const char *s;

    int real_year;

    /* example: "Wed Jun 30 21:49:08 1993" */

    /*           123456789012345678901234  */

    apr_time_exp_lt(&xt, t);

    s = &apr_day_snames[xt.tm_wday][0];

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = ' ';

    s = &apr_month_snames[xt.tm_mon][0];

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = *s++;

    *date_str++ = ' ';

    *date_str++ = xt.tm_mday / 10 + '0';

    *date_str++ = xt.tm_mday % 10 + '0';

    *date_str++ = ' ';

    *date_str++ = xt.tm_hour / 10 + '0';

    *date_str++ = xt.tm_hour % 10 + '0';

    *date_str++ = ':';

    *date_str++ = xt.tm_min / 10 + '0';

    *date_str++ = xt.tm_min % 10 + '0';

    *date_str++ = ':';

    *date_str++ = xt.tm_sec / 10 + '0';

    *date_str++ = xt.tm_sec % 10 + '0';

    *date_str++ = ' ';

    real_year = 1900 + xt.tm_year;

    *date_str++ = real_year / 1000 + '0';

    *date_str++ = real_year % 1000 / 100 + '0';

    *date_str++ = real_year % 100 / 10 + '0';

    *date_str++ = real_year % 10 + '0';

    *date_str++ = 0;

    return APR_SUCCESS;

}

apr_status_t apr_strftime(char *s, apr_size_t *retsize, apr_size_t max,

                        const char *format, apr_time_exp_t *xt)

{

    struct tm tm;

    memset(&tm, 0, sizeof tm);

    tm.tm_sec  = xt->tm_sec;

    tm.tm_min  = xt->tm_min;

    tm.tm_hour = xt->tm_hour;

    tm.tm_mday = xt->tm_mday;

    tm.tm_mon  = xt->tm_mon;

    tm.tm_year = xt->tm_year;

    tm.tm_wday = xt->tm_wday;

    tm.tm_yday = xt->tm_yday;

    tm.tm_isdst = xt->tm_isdst;

#if defined(HAVE_STRUCT_TM_TM_GMTOFF)

    tm.tm_gmtoff = xt->tm_gmtoff;

#elif defined(HAVE_STRUCT_TM___TM_GMTOFF)

    tm.__tm_gmtoff = xt->tm_gmtoff;

#endif

    (*retsize) = strftime(s, max, format, &tm);

    return APR_SUCCESS;

}