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Diffstat (limited to 'Build/source/libs/freetype/freetype-1.5/lib/arch/msdos/hugefile.c')
-rw-r--r-- | Build/source/libs/freetype/freetype-1.5/lib/arch/msdos/hugefile.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/Build/source/libs/freetype/freetype-1.5/lib/arch/msdos/hugefile.c b/Build/source/libs/freetype/freetype-1.5/lib/arch/msdos/hugefile.c new file mode 100644 index 00000000000..695daa69def --- /dev/null +++ b/Build/source/libs/freetype/freetype-1.5/lib/arch/msdos/hugefile.c @@ -0,0 +1,87 @@ +/******************************************************************* + * + * hugefile.c + * + * File I/O Component (body) for dealing with "huge" objects under + * MS-DOS. Relies on the "default" version, with a small hook. + * + * Written by Antoine Leca based on ideas from Dave Hoo. + * Copyright 1999-2001 by Dave Hoo, Antoine Leca, + * David Turner, Robert Wilhelm, and Werner Lemberg. + * + * This file is part of the FreeType project, and may only be used + * modified and distributed under the terms of the FreeType project + * license, LICENSE.TXT. By continuing to use, modify, or distribute + * this file you indicate that you have read the license and + * understand and accept it fully. + * + * NOTE + * + * This file #includes the normal version, to avoid discrepancies + * between versions. It uses only ANSI-mandated "tricks", so + * any ANSI-compliant compiler should be able to compile this file. + * + ******************************************************************/ + +#include "ttconfig.h" +#include "tttypes.h" + +/* Here we include <stdio.h>, to have the proper definition of fread */ +#include <stdio.h> + +/* Then, we divert the use of fread to our version */ +#undef fread +#define fread(ptr, size, n, stream) huge_fread(ptr, size, n, stream) + + FT_INTERNAL_FUNC( Long ) + huge_fread ( void *ptr, size_t size, Long n, FILE *stream ); + +/* Now, we include the "normal" version of ttfile.c */ +/* The ANSI/ISO standard mandates that the include of <stdio.h> */ +/* there have no bad effects. */ +#include "ttfile.c" + +/* Then, we define our implementation of fread that makes use of */ +/* "huge"-allocated memory. */ + +/******************************************************************* + * + * Function : huge_fread + * + * Description : replacement version of fread that handles + * "huge"-allocated memory. + * + * Input : See the reference for the runtime library function fread + * + * Output : See the reference for the runtime library function fread + * + * Notes : + * + ******************************************************************/ + + FT_INTERNAL_DEF( Long ) + huge_fread ( void * ptr, + size_t size, + Long n, + FILE * stream ) + { + char TT_HUGE_PTR * p = (char TT_HUGE_PTR *) ptr; + ULong left = (ULong)n * size; + size_t toRead; + + while ( left ) + { + toRead = (left > 0x8000) ? 0x8000 : left; + if ( (fread)( p, 1, toRead, stream ) != toRead) + return -1; + else + { + left -= (ULong) toRead; + p += toRead; + } + } + return n * size; + } + + +/* END */ |