187f8d625b
Moving the implementation of the snprintf wrapper functions to the platform module allows to re-use the same implementation throughout the entire codebase.
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*
|
|
* libdivecomputer
|
|
*
|
|
* Copyright (C) 2021 Jef Driesen
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifdef _WIN32
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#define NOGDI
|
|
#include <windows.h>
|
|
#else
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "platform.h"
|
|
|
|
int
|
|
dc_platform_sleep (unsigned int milliseconds)
|
|
{
|
|
#ifdef _WIN32
|
|
Sleep (milliseconds);
|
|
#else
|
|
struct timespec ts;
|
|
ts.tv_sec = (milliseconds / 1000);
|
|
ts.tv_nsec = (milliseconds % 1000) * 1000000;
|
|
|
|
while (nanosleep (&ts, &ts) != 0) {
|
|
if (errno != EINTR ) {
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
dc_platform_vsnprintf (char *str, size_t size, const char *format, va_list ap)
|
|
{
|
|
int n = 0;
|
|
|
|
if (size == 0)
|
|
return -1;
|
|
|
|
#ifdef _MSC_VER
|
|
/*
|
|
* The non-standard vsnprintf implementation provided by MSVC doesn't null
|
|
* terminate the string and returns a negative value if the destination
|
|
* buffer is too small.
|
|
*/
|
|
n = _vsnprintf (str, size - 1, format, ap);
|
|
if (n == size - 1 || n < 0)
|
|
str[size - 1] = 0;
|
|
#else
|
|
/*
|
|
* The C99 vsnprintf function will always null terminate the string. If the
|
|
* destination buffer is too small, the return value is the number of
|
|
* characters that would have been written if the buffer had been large
|
|
* enough.
|
|
*/
|
|
n = vsnprintf (str, size, format, ap);
|
|
if (n >= 0 && (size_t) n >= size)
|
|
n = -1;
|
|
#endif
|
|
|
|
return n;
|
|
}
|
|
|
|
int
|
|
dc_platform_snprintf (char *str, size_t size, const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
int n = 0;
|
|
|
|
va_start (ap, format);
|
|
n = dc_platform_vsnprintf (str, size, format, ap);
|
|
va_end (ap);
|
|
|
|
return n;
|
|
}
|