1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "prep.h" 6 7 // prep - Control Value Program 8 // http://www.microsoft.com/opentype/otspec/prep.htm 9 10 namespace ots { 11 12 bool ots_prep_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { 13 Buffer table(data, length); 14 15 OpenTypePREP *prep = new OpenTypePREP; 16 file->prep = prep; 17 18 if (length >= 128 * 1024u) { 19 return OTS_FAILURE(); // almost all prep tables are less than 9k bytes. 20 } 21 22 if (!table.Skip(length)) { 23 return OTS_FAILURE(); 24 } 25 26 prep->data = data; 27 prep->length = length; 28 return true; 29 } 30 31 bool ots_prep_should_serialise(OpenTypeFile *file) { 32 if (!file->glyf) return false; // this table is not for CFF fonts. 33 return g_transcode_hints && file->prep; 34 } 35 36 bool ots_prep_serialise(OTSStream *out, OpenTypeFile *file) { 37 const OpenTypePREP *prep = file->prep; 38 39 if (!out->Write(prep->data, prep->length)) { 40 return OTS_FAILURE(); 41 } 42 43 return true; 44 } 45 46 void ots_prep_free(OpenTypeFile *file) { 47 delete file->prep; 48 } 49 50 } // namespace ots 51
