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/*
* File: libutil.cc
* Summary: Functions that may be missing from some systems
*
* Change History (most recent first):
*
* <1> 2001/Nov/01 BWR Created
*
*/
#include "AppHdr.h"
#include <stdio.h>
#include <ctype.h>
void get_input_line( char *const buff, int len )
{
buff[0] = '\0'; // just in case
#if defined(LINUX)
get_input_line_from_curses( buff, len ); // inplemented in liblinux.cc
#elif defined(MAC) || defined(WIN32CONSOLE)
getstr( buff, len ); // implemented in libmac.cc
#else
fgets( buff, len, stdin ); // much safer than gets()
#endif
buff[ len - 1 ] = '\0'; // just in case
// Removing white space from the end in order to get rid of any
// newlines or carriage returns that any of the above might have
// left there (ie fgets especially). -- bwr
const int end = strlen( buff );
int i;
for (i = end - 1; i >= 0; i++)
{
if (isspace( buff[i] ))
buff[i] = '\0';
else
break;
}
}
// The old school way of doing short delays via low level I/O sync.
// Good for systems like old versions of Solaris that don't have usleep.
#ifdef NEED_USLEEP
#include <sys/time.h>
#include <sys/types.h>
#include <sys/unistd.h>
void usleep(unsigned long time)
{
struct timeval timer;
timer.tv_sec = (time / 1000000L);
timer.tv_usec = (time % 1000000L);
select(0, NULL, NULL, NULL, &timer);
}
#endif
// Not the greatest version of snprintf, but a functional one that's
// a bit safer than raw sprintf(). Note that this doesn't do the
// special behaviour for size == 0, largely because the return value
// in that case varies depending on which standard is being used (SUSv2
// returns an unspecified value < 1, whereas C99 allows str == NULL
// and returns the number of characters that would have been written). -- bwr
#ifdef NEED_SNPRINTF
#include <stdarg.h>
#include <string.h>
int snprintf( char *str, size_t size, const char *format, ... )
{
va_list argp;
va_start( argp, format );
char buff[ 10 * size ]; // hopefully enough
vsprintf( buff, format, argp );
strncpy( str, buff, size );
str[ size - 1 ] = '\0';
int ret = strlen( str );
if ((unsigned int) ret == size - 1 && strlen( buff ) >= size)
ret = -1;
va_end( argp );
return (ret);
}
#endif
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