mirror of
https://github.com/gnif/LookingGlass.git
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52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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/*
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KVMGFX Client - A KVM Client for VGA Passthrough
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Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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int alloc_sprintf(char ** str, const char * format, ...)
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{
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if (!str)
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return -1;
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*str = NULL;
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va_list ap;
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va_start(ap, format);
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int len = vsnprintf(NULL, 0, format, ap);
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va_end(ap);
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if (len < 0)
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return len;
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*str = malloc(len+1);
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va_start(ap, format);
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int ret = vsnprintf(*str, len + 1, format, ap);
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va_end(ap);
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if (ret < 0)
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{
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free(*str);
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*str = NULL;
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return ret;
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}
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return ret;
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}
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