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utility.c
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C/C++ Source or Header
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1992-11-24
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4KB
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208 lines
/* ************************************************************************
* file: utility.c, Utility module. Part of DIKUMUD *
* Usage: Utility procedures *
* Copyright (C) 1990, 1991 - see 'license.doc' for complete information. *
************************************************************************* */
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "structs.h"
#include <time.h>
#include "utils.h"
extern struct time_data time_info;
int MIN(int a, int b)
{
return a < b ? a:b;
}
int MAX(int a, int b)
{
return a > b ? a:b;
}
/* creates a random number in interval [from;to] */
int number(int from, int to)
{
return((random() % (to - from + 1)) + from);
}
/* simulates dice roll */
int dice(int number, int size)
{
int r;
int sum = 0;
assert(size >= 1);
for (r = 1; r <= number; r++) sum += ((random() % size)+1);
return(sum);
}
/* Create a duplicate of a string */
/*
char *strdup(char *source)
{
char *new;
CREATE(new, char, strlen(source)+1);
return(strcpy(new, source));
}
*/
/* returns: 0 if equal, 1 if arg1 > arg2, -1 if arg1 < arg2 */
/* scan 'till found different or end of both */
int str_cmp(char *arg1, char *arg2)
{
int chk, i;
for (i = 0; *(arg1 + i) || *(arg2 + i); i++)
if (chk = LOWER(*(arg1 + i)) - LOWER(*(arg2 + i)))
if (chk < 0)
return (-1);
else
return (1);
return(0);
}
/* returns: 0 if equal, 1 if arg1 > arg2, -1 if arg1 < arg2 */
/* scan 'till found different, end of both, or n reached */
int strn_cmp(char *arg1, char *arg2, int n)
{
int chk, i;
for (i = 0; (*(arg1 + i) || *(arg2 + i)) && (n>0); i++, n--)
if (chk = LOWER(*(arg1 + i)) - LOWER(*(arg2 + i)))
if (chk < 0)
return (-1);
else
return (1);
return(0);
}
/* writes a string to the log */
void log(char *str)
{
long ct;
char *tmstr;
ct = time(0);
tmstr = asctime(localtime(&ct));
*(tmstr + strlen(tmstr) - 1) = '\0';
fprintf(stderr, "%s :: %s\n", tmstr, str);
}
void sprintbit(long vektor, char *names[], char *result)
{
long nr;
*result = '\0';
for(nr=0; vektor; vektor>>=1)
{
if (IS_SET(1, vektor))
if (*names[nr] != '\n') {
strcat(result,names[nr]);
strcat(result," ");
} else {
strcat(result,"UNDEFINED");
strcat(result," ");
}
if (*names[nr] != '\n')
nr++;
}
if (!*result)
strcat(result, "NOBITS");
}
void sprinttype(int type, char *names[], char *result)
{
int nr;
for(nr=0;(*names[nr]!='\n');nr++);
if(type < nr)
strcpy(result,names[type]);
else
strcpy(result,"UNDEFINED");
}
/* Calculate the REAL time passed over the last t2-t1 centuries (secs) */
struct time_info_data real_time_passed(time_t t2, time_t t1)
{
long secs;
struct time_info_data now;
secs = (long) (t2 - t1);
now.hours = (secs/SECS_PER_REAL_HOUR) % 24; /* 0..23 hours */
secs -= SECS_PER_REAL_HOUR*now.hours;
now.day = (secs/SECS_PER_REAL_DAY); /* 0..34 days */
secs -= SECS_PER_REAL_DAY*now.day;
now.month = -1;
now.year = -1;
return now;
}
/* Calculate the MUD time passed over the last t2-t1 centuries (secs) */
struct time_info_data mud_time_passed(time_t t2, time_t t1)
{
long secs;
struct time_info_data now;
secs = (long) (t2 - t1);
now.hours = (secs/SECS_PER_MUD_HOUR) % 24; /* 0..23 hours */
secs -= SECS_PER_MUD_HOUR*now.hours;
now.day = (secs/SECS_PER_MUD_DAY) % 35; /* 0..34 days */
secs -= SECS_PER_MUD_DAY*now.day;
now.month = (secs/SECS_PER_MUD_MONTH) % 17; /* 0..16 months */
secs -= SECS_PER_MUD_MONTH*now.month;
now.year = (secs/SECS_PER_MUD_YEAR); /* 0..XX? years */
return now;
}
struct time_info_data age(struct char_data *ch)
{
long secs;
struct time_info_data player_age;
player_age = mud_time_passed(time(0),ch->player.time.birth);
player_age.year += 17; /* All players start at 17 */
return player_age;
}