Campbell Barton
bae5826b65
Workaround freetype's use of fopen by swapping FT_New_Face for our own version which uses BLI_fopen.
146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/blenfont/intern/blf_font_win32_compat.c
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* \ingroup blf
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*
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* Workaround for win32 which needs to use BLI_fopen to access files.
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*
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* defines #FT_New_Face__win32_compat, a drop-in replacement for \a #FT_New_Face.
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*/
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#ifdef WIN32
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#include <stdio.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include "MEM_guardedalloc.h"
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#include "BLI_utildefines.h"
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#include "BLI_fileops.h"
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#include "blf_internal.h"
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/* internal freetype defines */
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#define STREAM_FILE(stream) ((FILE *)stream->descriptor.pointer)
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#define FT_THROW(e) -1
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static void ft_ansi_stream_close(
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FT_Stream stream)
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{
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fclose(STREAM_FILE(stream));
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stream->descriptor.pointer = NULL;
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stream->size = 0;
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stream->base = 0;
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/* WARNING: this works but be careful!
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* Checked freetype sources, there isn't any access after closing. */
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MEM_freeN(stream);
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}
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static unsigned long ft_ansi_stream_io(
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FT_Stream stream,
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unsigned long offset,
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unsigned char *buffer,
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unsigned long count)
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{
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FILE *file;
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if (!count && offset > stream->size)
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return 1;
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file = STREAM_FILE(stream);
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if (stream->pos != offset)
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fseek(file, offset, SEEK_SET);
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return fread(buffer, 1, count, file);
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}
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static FT_Error FT_Stream_Open__win32_compat(FT_Stream stream, const char *filepathname)
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{
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FILE *file;
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BLI_assert(stream);
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stream->descriptor.pointer = NULL;
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stream->pathname.pointer = (char *)filepathname;
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stream->base = 0;
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stream->pos = 0;
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stream->read = NULL;
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stream->close = NULL;
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file = BLI_fopen(filepathname, "rb");
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if (!file) {
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fprintf(stderr,
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"FT_Stream_Open: "
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"could not open `%s'\n", filepathname);
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return FT_THROW(Cannot_Open_Resource);
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}
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fseek(file, 0, SEEK_END);
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stream->size = ftell(file);
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if (!stream->size) {
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fprintf(stderr,
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"FT_Stream_Open: "
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"opened `%s' but zero-sized\n", filepathname);
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fclose(file);
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return FT_THROW(Cannot_Open_Stream);
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}
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fseek(file, 0, SEEK_SET);
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stream->descriptor.pointer = file;
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stream->read = ft_ansi_stream_io;
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stream->close = ft_ansi_stream_close;
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return FT_Err_Ok;
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}
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FT_Error FT_New_Face__win32_compat(
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FT_Library library,
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const char *pathname,
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FT_Long face_index,
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FT_Face *aface)
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{
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FT_Error err;
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FT_Open_Args open;
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FT_Stream stream = NULL;
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stream = MEM_callocN(sizeof(*stream), __func__);
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open.flags = FT_OPEN_STREAM;
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open.stream = stream;
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stream->pathname.pointer = (char *)pathname;
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err = FT_Stream_Open__win32_compat(stream, pathname);
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if (err) {
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MEM_freeN(stream);
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return err;
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}
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err = FT_Open_Face(library, &open, face_index, aface);
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/* no need to free 'stream', its handled by FT_Open_Face if an error occurs */
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return err;
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}
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#endif /* WIN32 */
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