62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
/*
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* synergy -- mouse and keyboard sharing utility
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* Copyright (C) 2002 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#if HAVE_VSNPRINTF
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#if !defined(ARCH_VSNPRINTF)
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# define ARCH_VSNPRINTF vsnprintf
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#endif
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int
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ARCH_STRING::vsnprintf(char* str, int size, const char* fmt, va_list ap)
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{
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int n = ::ARCH_VSNPRINTF(str, size, fmt, ap);
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if (n > size) {
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n = -1;
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}
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return n;
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}
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#elif UNIX_LIKE // !HAVE_VSNPRINTF
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#include <stdio.h>
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int
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ARCH_STRING::vsnprintf(char* str, int size, const char* fmt, va_list ap)
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{
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static FILE* bitbucket = fopen("/dev/null", "w");
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if (bitbucket == NULL) {
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// uh oh
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if (size > 0) {
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str[0] = '\0';
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}
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return 0;
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}
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else {
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// count the characters using the bitbucket
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int n = vfprintf(bitbucket, fmt, ap);
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if (n + 1 <= size) {
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// it'll fit so print it into str
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vsprintf(str, fmt, ap);
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}
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return n;
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}
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}
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#else // !HAVE_VSNPRINTF && !UNIX_LIKE
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#error vsnprintf not implemented
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#endif // !HAVE_VSNPRINTF
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