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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/ots/src/prep.cc
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/ots/src/prep.cc')
-rw-r--r--gfx/ots/src/prep.cc59
1 files changed, 59 insertions, 0 deletions
diff --git a/gfx/ots/src/prep.cc b/gfx/ots/src/prep.cc
new file mode 100644
index 000000000..1c9b45f91
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+++ b/gfx/ots/src/prep.cc
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+// 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/typography/otspec/prep.htm
+
+#define TABLE_NAME "prep"
+
+namespace ots {
+
+bool ots_prep_parse(Font *font, const uint8_t *data, size_t length) {
+ Buffer table(data, length);
+
+ OpenTypePREP *prep = new OpenTypePREP;
+ font->prep = prep;
+
+ if (length >= 128 * 1024u) {
+ return OTS_FAILURE_MSG("table length %ld > 120K", length); // almost all prep tables are less than 9k bytes.
+ }
+
+ if (!table.Skip(length)) {
+ return OTS_FAILURE_MSG("Failed to read table of length %ld", length);
+ }
+
+ prep->data = data;
+ prep->length = length;
+ return true;
+}
+
+bool ots_prep_should_serialise(Font *font) {
+ if (!font->glyf) return false; // this table is not for CFF fonts.
+ return font->prep != NULL;
+}
+
+bool ots_prep_serialise(OTSStream *out, Font *font) {
+ const OpenTypePREP *prep = font->prep;
+
+ if (!out->Write(prep->data, prep->length)) {
+ return OTS_FAILURE_MSG("Failed to write table length");
+ }
+
+ return true;
+}
+
+void ots_prep_reuse(Font *font, Font *other) {
+ font->prep = other->prep;
+ font->prep_reused = true;
+}
+
+void ots_prep_free(Font *font) {
+ delete font->prep;
+}
+
+} // namespace ots
+
+#undef TABLE_NAME