missing header

Common/IO.h

+// Gmsh - Copyright (C) 1997-2014 C. Geuzaine, J.-F. Remacle
+//
+// See the LICENSE.txt file for license information. Please report all
+// bugs and problems to the public mailing list <gmsh@geuz.org>.
+//
+// Contribued by Alexis Salzman
+
+#ifndef _GMSH_IO_H_
+#define _GMSH_IO_H_
+
+#include <stdio.h>
+#include "GmshConfig.h"
+
+#if defined(HAVE_COMPRESSED_IO) && defined(HAVE_LIBZ)
+
+#include <zlib.h>
+typedef gzFile gmshFILE;
+typedef z_off_t gmshfpos_t;
+#define gmshopen gzopen
+#define gmshgets(a,b,c) gzgets((c),(a),(b))
+#define gmshclose gzclose
+#define gmsheof gzeof
+#define gmshgetc gzgetc
+#define gmshprintf gzprintf
+#define gmsherror(a){ int ernum; char *gzerror(a,&ernum); return ernum; }
+#define gmshsetpos(a, b){ return gzseek(a,*b,SEEK_SET); }
+#define gmshgetpos(a, b){ *b=gztell(a); return 0; }
+
+#else
+
+typedef FILE *gmshFILE;
+typedef fpos_t gmshfpos_t;
+#define gmshopen Fopen
+#define gmshgets fgets
+#define gmshclose fclose
+#define gmsheof feof
+#define gmshgetc getc
+#define gmshprintf fprintf
+#define gmsherror ferror
+#define gmshsetpos fsetpos
+#define gmshgetpos fgetpos
+
+#endif
+
+#endif