From 0f8691a48869932cd3de5195f5211c25e4691b21 Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Thu, 14 Nov 2019 10:07:01 +0100 Subject: Issue #1288 - Part 4: Update the OpenType Sanitizer component to 8.0.0 --- gfx/ots/src/glat.h | 172 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 gfx/ots/src/glat.h (limited to 'gfx/ots/src/glat.h') diff --git a/gfx/ots/src/glat.h b/gfx/ots/src/glat.h new file mode 100644 index 000000000..04c9c1cce --- /dev/null +++ b/gfx/ots/src/glat.h @@ -0,0 +1,172 @@ +// 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. + +#ifndef OTS_GLAT_H_ +#define OTS_GLAT_H_ + +#include + +#include "ots.h" +#include "graphite.h" + +namespace ots { + +// ----------------------------------------------------------------------------- +// OpenTypeGLAT_Basic Interface +// ----------------------------------------------------------------------------- + +class OpenTypeGLAT_Basic : public Table { + public: + explicit OpenTypeGLAT_Basic(Font* font, uint32_t tag) + : Table(font, tag, tag) { } + + virtual bool Parse(const uint8_t* data, size_t length) = 0; + virtual bool Serialize(OTSStream* out) = 0; +}; + +// ----------------------------------------------------------------------------- +// OpenTypeGLAT_v1 +// ----------------------------------------------------------------------------- + +class OpenTypeGLAT_v1 : public OpenTypeGLAT_Basic { + public: + explicit OpenTypeGLAT_v1(Font* font, uint32_t tag) + : OpenTypeGLAT_Basic(font, tag) { } + + bool Parse(const uint8_t* data, size_t length); + bool Serialize(OTSStream* out); + + private: + struct GlatEntry : public TablePart { + explicit GlatEntry(OpenTypeGLAT_v1* parent) + : TablePart(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint8_t attNum; + uint8_t num; + std::vector attributes; + }; + uint32_t version; + std::vector entries; +}; + +// ----------------------------------------------------------------------------- +// OpenTypeGLAT_v2 +// ----------------------------------------------------------------------------- + +class OpenTypeGLAT_v2 : public OpenTypeGLAT_Basic { + public: + explicit OpenTypeGLAT_v2(Font* font, uint32_t tag) + : OpenTypeGLAT_Basic(font, tag) { } + + bool Parse(const uint8_t* data, size_t length); + bool Serialize(OTSStream* out); + + private: + struct GlatEntry : public TablePart { + explicit GlatEntry(OpenTypeGLAT_v2* parent) + : TablePart(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + int16_t attNum; + int16_t num; + std::vector attributes; + }; + uint32_t version; + std::vector entries; +}; + +// ----------------------------------------------------------------------------- +// OpenTypeGLAT_v3 +// ----------------------------------------------------------------------------- + +class OpenTypeGLAT_v3 : public OpenTypeGLAT_Basic { + public: + explicit OpenTypeGLAT_v3(Font* font, uint32_t tag) + : OpenTypeGLAT_Basic(font, tag) { } + + bool Parse(const uint8_t* data, size_t length) { + return this->Parse(data, length, false); + } + bool Serialize(OTSStream* out); + + private: + bool Parse(const uint8_t* data, size_t length, bool prevent_decompression); + struct GlyphAttrs : public TablePart { + explicit GlyphAttrs(OpenTypeGLAT_v3* parent) + : TablePart(parent), octabox(parent) { } + bool ParsePart(Buffer& table) { return false; } + bool ParsePart(Buffer& table, const size_t size); + bool SerializePart(OTSStream* out) const; + struct OctaboxMetrics : public TablePart { + explicit OctaboxMetrics(OpenTypeGLAT_v3* parent) + : TablePart(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + struct SubboxEntry : public TablePart { + explicit SubboxEntry(OpenTypeGLAT_v3* parent) + : TablePart(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + uint8_t left; + uint8_t right; + uint8_t bottom; + uint8_t top; + uint8_t diag_pos_min; + uint8_t diag_pos_max; + uint8_t diag_neg_min; + uint8_t diag_neg_max; + }; + uint16_t subbox_bitmap; + uint8_t diag_neg_min; + uint8_t diag_neg_max; + uint8_t diag_pos_min; + uint8_t diag_pos_max; + std::vector subboxes; + }; + struct GlatEntry : public TablePart { + explicit GlatEntry(OpenTypeGLAT_v3* parent) + : TablePart(parent) { } + bool ParsePart(Buffer& table); + bool SerializePart(OTSStream* out) const; + int16_t attNum; + int16_t num; + std::vector attributes; + }; + OctaboxMetrics octabox; + std::vector entries; + }; + uint32_t version; + uint32_t compHead; // compression header + static const uint32_t SCHEME = 0xF8000000; + static const uint32_t FULL_SIZE = 0x07FFFFFF; + static const uint32_t RESERVED = 0x07FFFFFE; + static const uint32_t OCTABOXES = 0x00000001; + std::vector entries; +}; + +// ----------------------------------------------------------------------------- +// OpenTypeGLAT +// ----------------------------------------------------------------------------- + +class OpenTypeGLAT : public Table { + public: + explicit OpenTypeGLAT(Font* font, uint32_t tag) + : Table(font, tag, tag), font(font), tag(tag) { } + OpenTypeGLAT(const OpenTypeGLAT& other) = delete; + OpenTypeGLAT& operator=(const OpenTypeGLAT& other) = delete; + ~OpenTypeGLAT() { delete handler; } + + bool Parse(const uint8_t* data, size_t length); + bool Serialize(OTSStream* out); + + private: + Font* font; + uint32_t tag; + OpenTypeGLAT_Basic* handler = nullptr; +}; + +} // namespace ots + +#endif // OTS_GLAT_H_ -- cgit v1.2.3