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#include "def.h"
/* compat.c: Copyright 2007 Dennis Holmes (dholmes@rahul.net)
* except as noted.
*/
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include "compat.h"
#ifndef HAVE_CLOCK_GETTIME
int clock_gettime(clockid_t clock_id, struct timespec *tp)
{
int r = 0;
#if defined(HAVE_GETTIMEOFDAY)
struct timeval tv;
if( (r = gettimeofday(&tv, (struct timezone *)0)) == 0 ){
tp->tv_sec = tv.tv_sec;
tp->tv_nsec = tv.tv_usec * 1000;
}
#else
#error No suitable precision timing functions appear to be available!
#error Please report this problem and identify your system platform.
#endif
return r;
}
#endif
#ifndef HAVE_VSNPRINTF
int vsnprintf(char *str, size_t size, const char *format, va_list ap)
{
int r;
char *buffer[4*MAXPATHLEN]; /* git-r-dun */
if( (r = vsprintf(buffer, format, ap)) >= 0){
strncpy(str, buffer, size-1);
str[size] = '\0';
}
return r;
}
#endif
#ifndef HAVE_SNPRINTF
int snprintf(char *str, size_t size, const char *format, ...)
{
int r;
va_list ap;
va_start(ap, format);
r = vsnprintf(str, size, format, ap);
va_end(ap);
return r;
}
#endif
#ifndef HAVE_STRNSTR
#include <string.h>
/* FUNCTION PROGRAMER: Siberiaic Sang */
char *strnstr(const char *haystack, const char *needle, size_t haystacklen)
{
char *p;
ssize_t plen;
ssize_t len = strlen(needle);
if( *needle == '\0' )
return (char *)haystack;
plen = haystacklen;
for( p = (char *)haystack;
p != (char *)0;
p = (char *)memchr(p + 1, *needle, plen-1) ){
plen = haystacklen - (p - haystack);
if( plen < len ) return (char *)0;
if( strncmp(p, needle, len) == 0 )
return (p);
}
return (char*) 0;
}
#endif
#ifndef HAVE_STRNCASECMP
#include <ctype.h>
int strncasecmp(const char *s1, const char *s2, size_t len)
{
unsigned char c1, c2;
int r = 0;
for( ; r==0 && len && *s1 && *s2; s1++, s2++, len-- ){
if( *s1 == *s2 ) continue;
c1 = (unsigned char)tolower((int)*s1);
c2 = (unsigned char)tolower((int)*s2);
if( c1 == c2 ) continue;
else if( c1 < c2 ) r = -1;
else if( c1 > c2 ) r = 1;
}
if( r==0 && len ){
if( !*s1 && !*s2 ) r = 0;
else if( *s1 ) r = 1;
else r = -1;
}
return r;
}
#endif
#ifndef HAVE_STRCASECMP
int strcasecmp(const char *s1, const char *s2)
{
return strncasecmp(s1, s2, strlen(s1));
}
#endif
#ifndef HAVE_RANDOM
long random(void)
{
long result;
unsigned long maxlong = 0, i = RAND_MAX;
maxlong--;
maxlong /= 2;
result = (long)rand();
while( i < maxlong ){
result = (result * 2UL*(RAND_MAX+1UL)) | rand();
i *= 2UL*(RAND_MAX+1UL);
}
return (result < 0) ? -result : result;
}
void srandom(unsigned long seed)
{
unsigned useed;
if( sizeof(seed) > sizeof(useed) ){
unsigned long mask = 0xffff;
int i = 2;
while( i < sizeof(useed) ){
mask = (mask << 16) | 0xffff;
i += 2;
}
useed = (unsigned)(seed & mask);
}else useed = seed;
srand(useed);
}
#endif
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