0ee6ffb257
Graphite is now available under: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later We pick MIT which is the same as Godot's main license for simplicity. Remove define to skip deprecation warnings, upstream fixed those.
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
// SPDX-License-Identifier: MIT OR MPL-2.0 OR LGPL-2.1-or-later OR GPL-2.0-or-later
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// Copyright 2012, SIL International, All rights reserved.
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#include <cstring>
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#include "inc/FileFace.h"
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#ifndef GRAPHITE2_NFILEFACE
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using namespace graphite2;
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FileFace::FileFace(const char *filename)
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: _file(fopen(filename, "rb")),
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_file_len(0),
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_header_tbl(NULL),
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_table_dir(NULL)
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{
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if (!_file) return;
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if (fseek(_file, 0, SEEK_END)) return;
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_file_len = ftell(_file);
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if (fseek(_file, 0, SEEK_SET)) return;
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size_t tbl_offset, tbl_len;
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// Get the header.
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if (!TtfUtil::GetHeaderInfo(tbl_offset, tbl_len)) return;
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if (fseek(_file, long(tbl_offset), SEEK_SET)) return;
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_header_tbl = (TtfUtil::Sfnt::OffsetSubTable*)gralloc<char>(tbl_len);
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if (_header_tbl)
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{
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if (fread(_header_tbl, 1, tbl_len, _file) != tbl_len) return;
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if (!TtfUtil::CheckHeader(_header_tbl)) return;
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}
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// Get the table directory
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if (!TtfUtil::GetTableDirInfo(_header_tbl, tbl_offset, tbl_len)) return;
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_table_dir = (TtfUtil::Sfnt::OffsetSubTable::Entry*)gralloc<char>(tbl_len);
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if (fseek(_file, long(tbl_offset), SEEK_SET)) return;
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if (_table_dir && fread(_table_dir, 1, tbl_len, _file) != tbl_len)
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{
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free(_table_dir);
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_table_dir = NULL;
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}
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return;
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}
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FileFace::~FileFace()
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{
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free(_table_dir);
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free(_header_tbl);
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if (_file)
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fclose(_file);
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}
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const void *FileFace::get_table_fn(const void* appFaceHandle, unsigned int name, size_t *len)
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{
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if (appFaceHandle == 0) return 0;
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const FileFace & file_face = *static_cast<const FileFace *>(appFaceHandle);
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void *tbl;
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size_t tbl_offset, tbl_len;
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if (!TtfUtil::GetTableInfo(name, file_face._header_tbl, file_face._table_dir, tbl_offset, tbl_len))
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return 0;
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if (tbl_offset > file_face._file_len || tbl_len > file_face._file_len - tbl_offset
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|| fseek(file_face._file, long(tbl_offset), SEEK_SET) != 0)
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return 0;
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tbl = malloc(tbl_len);
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if (!tbl || fread(tbl, 1, tbl_len, file_face._file) != tbl_len)
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{
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free(tbl);
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return 0;
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}
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if (len) *len = tbl_len;
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return tbl;
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}
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void FileFace::rel_table_fn(const void* appFaceHandle, const void *table_buffer)
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{
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if (appFaceHandle == 0) return;
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free(const_cast<void *>(table_buffer));
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}
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const gr_face_ops FileFace::ops = { sizeof FileFace::ops, &FileFace::get_table_fn, &FileFace::rel_table_fn };
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#endif //!GRAPHITE2_NFILEFACE
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