looking-glass/client/include/util.h
Quantum f9a9953071 [client] egl: use new util_hasGLExt helper to check extensions
We previously used strstr, which can be prone to false positives when
the name of one extension is a substring of another extension.

This commit creates the helper function util_hasGLExt, which asserts
that the substring found in extension list is bounded by either spaces
or the beginning/end of the string.
2021-05-19 15:58:54 +10:00

44 lines
1.5 KiB
C

/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program 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 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_LG_UTIL_
#define _H_LG_UTIL_
#include <stdlib.h>
#include <stdbool.h>
#include "common/types.h"
// reads the specified file into a new buffer
// the callee must free the buffer
bool util_fileGetContents(const char * filename, char ** buffer, size_t * length);
void util_cursorToInt(double ex, double ey, int *x, int *y);
bool util_guestCurToLocal(struct DoublePoint *local);
void util_localCurToGuest(struct DoublePoint *guest);
void util_rotatePoint(struct DoublePoint *point);
bool util_hasGLExt(const char * exts, const char * ext);
static inline double util_clamp(double x, double min, double max)
{
if (x < min) return min;
if (x > max) return max;
return x;
}
#endif