1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/graphite2/src/FileFace.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,111 @@
1.4 +/* GRAPHITE2 LICENSING
1.5 +
1.6 + Copyright 2012, SIL International
1.7 + All rights reserved.
1.8 +
1.9 + This library is free software; you can redistribute it and/or modify
1.10 + it under the terms of the GNU Lesser General Public License as published
1.11 + by the Free Software Foundation; either version 2.1 of License, or
1.12 + (at your option) any later version.
1.13 +
1.14 + This program is distributed in the hope that it will be useful,
1.15 + but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.17 + Lesser General Public License for more details.
1.18 +
1.19 + You should also have received a copy of the GNU Lesser General Public
1.20 + License along with this library in the file named "LICENSE".
1.21 + If not, write to the Free Software Foundation, 51 Franklin Street,
1.22 + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
1.23 + internet at http://www.fsf.org/licenses/lgpl.html.
1.24 +
1.25 +Alternatively, the contents of this file may be used under the terms of the
1.26 +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
1.27 +License, as published by the Free Software Foundation, either version 2
1.28 +of the License or (at your option) any later version.
1.29 +*/
1.30 +#include <cstring>
1.31 +#include "inc/FileFace.h"
1.32 +
1.33 +
1.34 +#ifndef GRAPHITE2_NFILEFACE
1.35 +
1.36 +using namespace graphite2;
1.37 +
1.38 +FileFace::FileFace(const char *filename)
1.39 +: _file(fopen(filename, "rb")),
1.40 + _file_len(0),
1.41 + _header_tbl(NULL),
1.42 + _table_dir(NULL)
1.43 +{
1.44 + if (!_file) return;
1.45 +
1.46 + if (fseek(_file, 0, SEEK_END)) return;
1.47 + _file_len = ftell(_file);
1.48 + if (fseek(_file, 0, SEEK_SET)) return;
1.49 +
1.50 + size_t tbl_offset, tbl_len;
1.51 +
1.52 + // Get the header.
1.53 + if (!TtfUtil::GetHeaderInfo(tbl_offset, tbl_len)) return;
1.54 + if (fseek(_file, tbl_offset, SEEK_SET)) return;
1.55 + _header_tbl = (TtfUtil::Sfnt::OffsetSubTable*)gralloc<char>(tbl_len);
1.56 + if (_header_tbl)
1.57 + {
1.58 + if (fread(_header_tbl, 1, tbl_len, _file) != tbl_len) return;
1.59 + if (!TtfUtil::CheckHeader(_header_tbl)) return;
1.60 + }
1.61 +
1.62 + // Get the table directory
1.63 + if (!TtfUtil::GetTableDirInfo(_header_tbl, tbl_offset, tbl_len)) return;
1.64 + _table_dir = (TtfUtil::Sfnt::OffsetSubTable::Entry*)gralloc<char>(tbl_len);
1.65 + if (fseek(_file, tbl_offset, SEEK_SET)) return;
1.66 + if (_table_dir)
1.67 + if (fread(_table_dir, 1, tbl_len, _file) != tbl_len) return;
1.68 +}
1.69 +
1.70 +FileFace::~FileFace()
1.71 +{
1.72 + free(_table_dir);
1.73 + free(_header_tbl);
1.74 + if (_file)
1.75 + fclose(_file);
1.76 +}
1.77 +
1.78 +
1.79 +const void *FileFace::get_table_fn(const void* appFaceHandle, unsigned int name, size_t *len)
1.80 +{
1.81 + if (appFaceHandle == 0) return 0;
1.82 + const FileFace & file_face = *static_cast<const FileFace *>(appFaceHandle);
1.83 +
1.84 + void *tbl;
1.85 + size_t tbl_offset, tbl_len;
1.86 + if (!TtfUtil::GetTableInfo(name, file_face._header_tbl, file_face._table_dir, tbl_offset, tbl_len))
1.87 + return 0;
1.88 +
1.89 + if (tbl_offset + tbl_len > file_face._file_len
1.90 + || fseek(file_face._file, tbl_offset, SEEK_SET) != 0)
1.91 + return 0;
1.92 +
1.93 + tbl = malloc(tbl_len);
1.94 + if (fread(tbl, 1, tbl_len, file_face._file) != tbl_len)
1.95 + {
1.96 + free(tbl);
1.97 + return 0;
1.98 + }
1.99 +
1.100 + if (len) *len = tbl_len;
1.101 + return tbl;
1.102 +}
1.103 +
1.104 +void FileFace::rel_table_fn(const void* appFaceHandle, const void *table_buffer)
1.105 +{
1.106 + if (appFaceHandle == 0) return;
1.107 +
1.108 + free(const_cast<void *>(table_buffer));
1.109 +}
1.110 +
1.111 +const gr_face_ops FileFace::ops = { sizeof FileFace::ops, &FileFace::get_table_fn, &FileFace::rel_table_fn };
1.112 +
1.113 +
1.114 +#endif //!GRAPHITE2_NFILEFACE
