From fa095a4504cbe668e4244547e2c141597bea4ecf Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:32:44 +0200 Subject: Imported Upstream version 0.9.1 --- lib/unistdio/u-vsnprintf.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 lib/unistdio/u-vsnprintf.h (limited to 'lib/unistdio/u-vsnprintf.h') diff --git a/lib/unistdio/u-vsnprintf.h b/lib/unistdio/u-vsnprintf.h new file mode 100644 index 00000000..481a22f0 --- /dev/null +++ b/lib/unistdio/u-vsnprintf.h @@ -0,0 +1,52 @@ +/* Formatted output to strings. + Copyright (C) 1999, 2002, 2006-2008 Free Software Foundation, Inc. + + This program 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 3 of the License, or + (at your option) any later version. + + This program 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 program. If not, see . */ + +int +VSNPRINTF (DCHAR_T *buf, size_t size, const FCHAR_T *format, va_list args) +{ + size_t length; + DCHAR_T *result; + + if (size == 0) + buf = NULL; + else + length = size; + result = VASNPRINTF (buf, &length, format, args); + if (result == NULL) + return -1; + + if (result != buf) + { + if (size != 0) + { + /* The result did not fit into the buffer. Copy the initial segment + into the buffer, truncating it if necessary. */ + size_t n = (length < size ? length : size - 1); + DCHAR_CPY (buf, result, n); + buf[n] = '\0'; + } + free (result); + } + + if (length > INT_MAX) + { + errno = EOVERFLOW; + return -1; + } + + /* Return the number of resulting units, excluding the trailing NUL. */ + return length; +} -- cgit v1.2.3