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Diffstat (limited to 'libiberty/vsnprintf.c')
-rw-r--r-- | libiberty/vsnprintf.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/libiberty/vsnprintf.c b/libiberty/vsnprintf.c deleted file mode 100644 index 6c0afa672..000000000 --- a/libiberty/vsnprintf.c +++ /dev/null @@ -1,148 +0,0 @@ -/* Implement the vsnprintf function. - Copyright (C) 2003, 2004, 2005, 2011 Free Software Foundation, Inc. - Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>. - -This file is part of the libiberty library. This library is free -software; you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, 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 General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. - -As a special exception, if you link this library with files -compiled with a GNU compiler to produce an executable, this does not cause -the resulting executable to be covered by the GNU General Public License. -This exception does not however invalidate any other reasons why -the executable file might be covered by the GNU General Public License. */ - -/* - -@deftypefn Supplemental int vsnprintf (char *@var{buf}, size_t @var{n}, @ - const char *@var{format}, va_list @var{ap}) - -This function is similar to @code{vsprintf}, but it will write to -@var{buf} at most @code{@var{n}-1} bytes of text, followed by a -terminating null byte, for a total of @var{n} bytes. On error the -return value is -1, otherwise it returns the number of characters that -would have been printed had @var{n} been sufficiently large, -regardless of the actual value of @var{n}. Note some pre-C99 system -libraries do not implement this correctly so users cannot generally -rely on the return value if the system version of this function is -used. - -@end deftypefn - -*/ - -#include "config.h" -#include "ansidecl.h" - -#include <stdarg.h> -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#include "libiberty.h" - -/* This implementation relies on a working vasprintf. */ -int -vsnprintf (char *s, size_t n, const char *format, va_list ap) -{ - char *buf = 0; - int result = vasprintf (&buf, format, ap); - - if (!buf) - return -1; - if (result < 0) - { - free (buf); - return -1; - } - - result = strlen (buf); - if (n > 0) - { - if ((long) n > result) - memcpy (s, buf, result+1); - else - { - memcpy (s, buf, n-1); - s[n - 1] = 0; - } - } - free (buf); - return result; -} - -#ifdef TEST -/* Set the buffer to a known state. */ -#define CLEAR(BUF) do { memset ((BUF), 'X', sizeof (BUF)); (BUF)[14] = '\0'; } while (0) -/* For assertions. */ -#define VERIFY(P) do { if (!(P)) abort(); } while (0) - -static int ATTRIBUTE_PRINTF_3 -checkit (char *s, size_t n, const char *format, ...) -{ - int result; - VA_OPEN (ap, format); - VA_FIXEDARG (ap, char *, s); - VA_FIXEDARG (ap, size_t, n); - VA_FIXEDARG (ap, const char *, format); - result = vsnprintf (s, n, format, ap); - VA_CLOSE (ap); - return result; -} - -extern int main (void); -int -main (void) -{ - char buf[128]; - int status; - - CLEAR (buf); - status = checkit (buf, 10, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "foobar:9\0XXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 9, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "foobar:9\0XXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 8, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "foobar:\0XXXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 7, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "foobar\0XXXXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 6, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "fooba\0XXXXXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 2, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "f\0XXXXXXXXXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 1, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "\0XXXXXXXXXXXXX\0", 15) == 0); - - CLEAR (buf); - status = checkit (buf, 0, "%s:%d", "foobar", 9); - VERIFY (status==8 && memcmp (buf, "XXXXXXXXXXXXXX\0", 15) == 0); - - return 0; -} -#endif /* TEST */ |