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util.h

/***************************************************************
 *
 * Copyright (C) 1990-2007, Condor Team, Computer Sciences Department,
 * University of Wisconsin-Madison, WI.
 * 
 * Licensed 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.
 *
 ***************************************************************/


#ifndef __UTILS_H__
#define __UTILS_H__

#include "classad/common.h"

BEGIN_NAMESPACE( classad )

// macro for recognising octal digits
#define isodigit(x) (( (x) - '0' < 8 ) && ((x) - '0' >= 0))

// A structure which represents the Absolute Time Literal
struct abstime_t 
{
      time_t secs;   // seconds from the epoch (UTC) 
      int    offset; // seconds east of Greenwich 
};

// Get a random number between 0 and something large--usually an int
int get_random_integer(void);
// Get a random number between 0 and 1
double get_random_real(void);

long timezone_offset(void);

/* This converts a string so that sequences like \t
 * (two-characters, slash and t) are converted into the 
 * correct characters like tab. It also converts octal sequences. 
 */
void convert_escapes(std::string &text, bool &validStr); 

void getLocalTime(time_t *now, struct tm *localtm);
void getGMTime(time_t *now, struct tm *localtm);

void absTimeToString(const abstime_t &atime, std::string &buffer);
void relTimeToString(double rtime, std::string &buffer);

void day_numbers(int year, int month, int day, int &weekday, int &yearday);
int fixed_from_gregorian(int year, int month, int day);
bool is_leap_year(int year);

int classad_isinf(double x);
int classad_isnan(double x);

END_NAMESPACE // classad

#endif//__UTILS_H__

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