170 lines
3.3 KiB
C++
170 lines
3.3 KiB
C++
/*
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This file is part of Warzone 2100.
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Copyright (C) 1992-2007 Trolltech ASA.
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Copyright (C) 2005-2013 Warzone 2100 Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 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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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "frame.h"
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#include "stdio_ext.h"
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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int vslcatprintf(char* str, size_t size, const char* format, va_list ap)
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{
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size_t str_len;
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if (str == NULL
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|| size == 0)
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{
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return vsnprintf(NULL, 0, format, ap);
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}
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str_len = strlen(str);
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assert(str_len < size);
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return vsnprintf(&str[str_len], size - str_len, format, ap);
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}
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int slcatprintf(char* str, size_t size, const char* format, ...)
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{
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va_list ap;
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int count;
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va_start(ap, format);
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count = vslcatprintf(str, size, format, ap);
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va_end(ap);
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return count;
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}
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#if defined(WZ_OS_WIN)
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int vasprintf(char** strp, const char* format, va_list ap)
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{
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int count;
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va_list aq;
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va_copy(aq, ap);
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// Find out how long the resulting string is
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count = vsnprintf(NULL, 0, format, aq);
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va_end(aq);
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if (count == 0)
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{
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*strp = strdup("");
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return 0;
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}
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else if (count < 0)
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{
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// Something went wrong, so return the error code (probably still requires checking of "errno" though)
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return -1;
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}
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assert(strp != NULL);
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// Allocate memory for our string
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*strp = (char *)malloc(count + 1);
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if (*strp == NULL)
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{
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debug(LOG_FATAL, "Out of memory!");
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abort();
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return -1;
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}
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// Do the actual printing into our newly created string
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return vsprintf(*strp, format, ap);
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}
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int asprintf(char** strp, const char* format, ...)
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{
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va_list ap;
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int count;
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va_start(ap, format);
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count = vasprintf(strp, format, ap);
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va_end(ap);
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return count;
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}
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#endif
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#if defined(WZ_CC_MSVC)
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int wz_vsnprintf(char* str, size_t size, const char* format, va_list ap)
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{
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int count;
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va_list aq;
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va_copy(aq, ap);
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// Find out how long the resulting string is
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count = _vscprintf(format, aq);
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va_end(aq);
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if (count >= 0
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&& str != NULL)
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{
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// Perfrom the actual string formatting
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_vsnprintf_s(str, size, _TRUNCATE, format, ap);
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}
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// Return the amount of characters that would be written if _no_ truncation occurred
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return count;
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}
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int wz_snprintf(char* str, size_t size, const char* format, ...)
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{
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va_list ap;
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int count;
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va_start(ap, format);
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count = vsnprintf(str, size, format, ap);
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va_end(ap);
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return count;
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}
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#endif
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int vasprintfNull(char** strp, const char* format, va_list ap)
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{
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int count = vasprintf(strp, format, ap);
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if (count == -1) // If count == -1, strp is currently undefined.
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strp = NULL;
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return count;
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}
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int asprintfNull(char** strp, const char* format, ...)
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{
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va_list ap;
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int count;
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va_start(ap, format);
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count = vasprintfNull(strp, format, ap);
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va_end(ap);
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return count;
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}
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