5 * Provides an implementation of the "vsnprintf" function, conforming
6 * generally to C99 and SUSv3/POSIX specifications, with extensions
7 * to support Microsoft's non-standard format specifications. This
8 * is included in libmingwex.a, replacing the redirection through
9 * libmoldnames.a, to the MSVCRT standard "_vsnprintf" function; (the
10 * standard MSVCRT function remains available, and may be invoked
11 * directly, using this fully qualified form of its name).
13 * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
15 * This is free software. You may redistribute and/or modify it as you
16 * see fit, without restriction of copyright.
18 * This software is provided "as is", in the hope that it may be useful,
19 * but WITHOUT WARRANTY OF ANY KIND, not even any implied warranty of
20 * MERCHANTABILITY, nor of FITNESS FOR ANY PARTICULAR PURPOSE. At no
21 * time will the author accept any form of liability for any damages,
22 * however caused, resulting from the use of this software.
31 int __cdecl __vsnprintf (char *, size_t, const char *fmt, va_list) __MINGW_NOTHROW;
32 int __cdecl __mingw_alias(vsnprintf) (char *, size_t, const char *, va_list) __MINGW_NOTHROW;
34 int __cdecl __vsnprintf( char *buf, size_t length, const char *fmt, va_list argv )
38 if( length == (size_t)(0) )
40 * No buffer; simply compute and return the size required,
41 * without actually emitting any data.
43 return __pformat( 0, buf, 0, fmt, argv );
45 /* If we get to here, then we have a buffer...
46 * Emit data up to the limit of buffer length less one,
47 * then add the requisite NUL terminator.
49 retval = __pformat( 0, buf, --length, fmt, argv );
50 buf[retval < length ? retval : length] = '\0';
55 /* $RCSfile$Revision$: end of file */