| // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "prep.h" |
| |
| // prep - Control Value Program |
| // http://www.microsoft.com/opentype/otspec/prep.htm |
| |
| namespace ots { |
| |
| bool ots_prep_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { |
| Buffer table(data, length); |
| |
| OpenTypePREP *prep = new OpenTypePREP; |
| file->prep = prep; |
| |
| if (length >= 128 * 1024u) { |
| return OTS_FAILURE(); // almost all prep tables are less than 9k bytes. |
| } |
| |
| if (!table.Skip(length)) { |
| return OTS_FAILURE(); |
| } |
| |
| prep->data = data; |
| prep->length = length; |
| return true; |
| } |
| |
| bool ots_prep_should_serialise(OpenTypeFile *file) { |
| if (!file->glyf) return false; // this table is not for CFF fonts. |
| return g_transcode_hints && file->prep; |
| } |
| |
| bool ots_prep_serialise(OTSStream *out, OpenTypeFile *file) { |
| const OpenTypePREP *prep = file->prep; |
| |
| if (!out->Write(prep->data, prep->length)) { |
| return OTS_FAILURE(); |
| } |
| |
| return true; |
| } |
| |
| void ots_prep_free(OpenTypeFile *file) { |
| delete file->prep; |
| } |
| |
| } // namespace ots |