From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- gfx/ots/src/cvt.cc | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 gfx/ots/src/cvt.cc (limited to 'gfx/ots/src/cvt.cc') diff --git a/gfx/ots/src/cvt.cc b/gfx/ots/src/cvt.cc new file mode 100644 index 0000000000..2e0257889a --- /dev/null +++ b/gfx/ots/src/cvt.cc @@ -0,0 +1,46 @@ +// Copyright (c) 2009-2017 The OTS 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 "cvt.h" + +// cvt - Control Value Table +// http://www.microsoft.com/typography/otspec/cvt.htm + +namespace ots { + +bool OpenTypeCVT::Parse(const uint8_t *data, size_t length) { + Buffer table(data, length); + + if (length >= 128 * 1024u) { + return Error("Length (%d) > 120K"); // almost all cvt tables are less than 4k bytes. + } + + if (length % 2 != 0) { + return Error("Uneven table length (%d)", length); + } + + if (!table.Skip(length)) { + return Error("Table length too high"); + } + + this->data = data; + this->length = length; + return true; +} + +bool OpenTypeCVT::Serialize(OTSStream *out) { + if (!out->Write(this->data, this->length)) { + return Error("Failed to write cvt table"); + } + + return true; +} + +bool OpenTypeCVT::ShouldSerialize() { + return Table::ShouldSerialize() && + // this table is not for CFF fonts. + GetFont()->GetTable(OTS_TAG_GLYF) != NULL; +} + +} // namespace ots -- cgit v1.2.3