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-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/buffer.h172
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/file.h42
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.cc396
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.h113
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.cc380
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.h71
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.cc322
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.h47
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/port.h63
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/round.h35
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/store_bytes.h77
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.cc90
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.h38
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.cc420
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.h34
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.cc137
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.h38
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.cc64
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.h72
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_dec.h42
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.cc471
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.h54
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.cc73
-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.h114
24 files changed, 3365 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/buffer.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/buffer.h
new file mode 100644
index 00000000000..588ac0d3399
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/buffer.h
@@ -0,0 +1,172 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// The parts of ots.h & opentype-sanitiser.h that we need, taken from the
+// https://code.google.com/p/ots/ project.
+
+#ifndef WOFF2_BUFFER_H_
+#define WOFF2_BUFFER_H_
+
+#if defined(_WIN32)
+#include <stdlib.h>
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t;
+typedef unsigned short uint16_t;
+typedef int int32_t;
+typedef unsigned int uint32_t;
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#define ntohl(x) _byteswap_ulong (x)
+#define ntohs(x) _byteswap_ushort (x)
+#define htonl(x) _byteswap_ulong (x)
+#define htons(x) _byteswap_ushort (x)
+#else
+#include <arpa/inet.h>
+#include <stdint.h>
+#endif
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <limits>
+
+namespace woff2 {
+
+#if defined(_MSC_VER) || !defined(FONT_COMPRESSION_DEBUG)
+#define FONT_COMPRESSION_FAILURE() false
+#else
+#define FONT_COMPRESSION_FAILURE() \
+ woff2::Failure(__FILE__, __LINE__, __PRETTY_FUNCTION__)
+inline bool Failure(const char *f, int l, const char *fn) {
+ fprintf(stderr, "ERROR at %s:%d (%s)\n", f, l, fn);
+ fflush(stderr);
+ return false;
+}
+#endif
+
+// -----------------------------------------------------------------------------
+// Buffer helper class
+//
+// This class perform some trival buffer operations while checking for
+// out-of-bounds errors. As a family they return false if anything is amiss,
+// updating the current offset otherwise.
+// -----------------------------------------------------------------------------
+class Buffer {
+ public:
+ Buffer(const uint8_t *buffer, size_t len)
+ : buffer_(buffer),
+ length_(len),
+ offset_(0) { }
+
+ bool Skip(size_t n_bytes) {
+ return Read(NULL, n_bytes);
+ }
+
+ bool Read(uint8_t *buffer, size_t n_bytes) {
+ if (n_bytes > 1024 * 1024 * 1024) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if ((offset_ + n_bytes > length_) ||
+ (offset_ > length_ - n_bytes)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (buffer) {
+ std::memcpy(buffer, buffer_ + offset_, n_bytes);
+ }
+ offset_ += n_bytes;
+ return true;
+ }
+
+ inline bool ReadU8(uint8_t *value) {
+ if (offset_ + 1 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = buffer_[offset_];
+ ++offset_;
+ return true;
+ }
+
+ bool ReadU16(uint16_t *value) {
+ if (offset_ + 2 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint16_t));
+ *value = ntohs(*value);
+ offset_ += 2;
+ return true;
+ }
+
+ bool ReadS16(int16_t *value) {
+ return ReadU16(reinterpret_cast<uint16_t*>(value));
+ }
+
+ bool ReadU24(uint32_t *value) {
+ if (offset_ + 3 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = static_cast<uint32_t>(buffer_[offset_]) << 16 |
+ static_cast<uint32_t>(buffer_[offset_ + 1]) << 8 |
+ static_cast<uint32_t>(buffer_[offset_ + 2]);
+ offset_ += 3;
+ return true;
+ }
+
+ bool ReadU32(uint32_t *value) {
+ if (offset_ + 4 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint32_t));
+ *value = ntohl(*value);
+ offset_ += 4;
+ return true;
+ }
+
+ bool ReadS32(int32_t *value) {
+ return ReadU32(reinterpret_cast<uint32_t*>(value));
+ }
+
+ bool ReadTag(uint32_t *value) {
+ if (offset_ + 4 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint32_t));
+ offset_ += 4;
+ return true;
+ }
+
+ bool ReadR64(uint64_t *value) {
+ if (offset_ + 8 > length_) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ std::memcpy(value, buffer_ + offset_, sizeof(uint64_t));
+ offset_ += 8;
+ return true;
+ }
+
+ const uint8_t *buffer() const { return buffer_; }
+ size_t offset() const { return offset_; }
+ size_t length() const { return length_; }
+
+ void set_offset(size_t newoffset) { offset_ = newoffset; }
+
+ private:
+ const uint8_t * const buffer_;
+ const size_t length_;
+ size_t offset_;
+};
+
+} // namespace woff2
+
+#endif // WOFF2_BUFFER_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/file.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/file.h
new file mode 100644
index 00000000000..7afcb315fe8
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/file.h
@@ -0,0 +1,42 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// File IO helpers.
+
+#ifndef WOFF2_FILE_H_
+#define WOFF2_FILE_H_
+
+#include <fstream>
+#include <iterator>
+
+namespace woff2 {
+
+using std::string;
+
+
+inline string GetFileContent(string filename) {
+ std::ifstream ifs(filename.c_str(), std::ios::binary);
+ return string(
+ std::istreambuf_iterator<char>(ifs.rdbuf()),
+ std::istreambuf_iterator<char>());
+}
+
+inline void SetFileContents(string filename, string::iterator start,
+ string::iterator end) {
+ std::ofstream ofs(filename.c_str(), std::ios::binary);
+ std::copy(start, end, std::ostream_iterator<char>(ofs));
+}
+
+} // namespace woff2
+#endif // WOFF2_FILE_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.cc
new file mode 100644
index 00000000000..06067300524
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.cc
@@ -0,0 +1,396 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Font management utilities
+
+#include "./font.h"
+
+#include <algorithm>
+
+#include "./buffer.h"
+#include "./port.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+Font::Table* Font::FindTable(uint32_t tag) {
+ std::map<uint32_t, Font::Table>::iterator it = tables.find(tag);
+ return it == tables.end() ? 0 : &it->second;
+}
+
+const Font::Table* Font::FindTable(uint32_t tag) const {
+ std::map<uint32_t, Font::Table>::const_iterator it = tables.find(tag);
+ return it == tables.end() ? 0 : &it->second;
+}
+
+std::vector<uint32_t> Font::OutputOrderedTags() const {
+ std::vector<uint32_t> output_order;
+
+ for (const auto& i : tables) {
+ const Font::Table& table = i.second;
+ // This is a transformed table, we will write it together with the
+ // original version.
+ if (table.tag & 0x80808080) {
+ continue;
+ }
+ output_order.push_back(table.tag);
+ }
+
+ // Alphabetize then put loca immediately after glyf
+ auto glyf_loc = std::find(output_order.begin(), output_order.end(),
+ kGlyfTableTag);
+ auto loca_loc = std::find(output_order.begin(), output_order.end(),
+ kLocaTableTag);
+ if (glyf_loc != output_order.end() && loca_loc != output_order.end()) {
+ output_order.erase(loca_loc);
+ output_order.insert(std::find(output_order.begin(), output_order.end(),
+ kGlyfTableTag) + 1, kLocaTableTag);
+ }
+
+ return output_order;
+}
+
+bool ReadTrueTypeFont(Buffer* file, const uint8_t* data, size_t len,
+ Font* font) {
+ // We don't care about the search_range, entry_selector and range_shift
+ // fields, they will always be computed upon writing the font.
+ if (!file->ReadU16(&font->num_tables) ||
+ !file->Skip(6)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ std::map<uint32_t, uint32_t> intervals;
+ for (uint16_t i = 0; i < font->num_tables; ++i) {
+ Font::Table table;
+ table.flag_byte = 0;
+ table.reuse_of = NULL;
+ if (!file->ReadU32(&table.tag) ||
+ !file->ReadU32(&table.checksum) ||
+ !file->ReadU32(&table.offset) ||
+ !file->ReadU32(&table.length)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if ((table.offset & 3) != 0 ||
+ table.length > len ||
+ len - table.length < table.offset) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ intervals[table.offset] = table.length;
+ table.data = data + table.offset;
+ if (font->tables.find(table.tag) != font->tables.end()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ font->tables[table.tag] = table;
+ }
+
+ // Check that tables are non-overlapping.
+ uint32_t last_offset = 12UL + 16UL * font->num_tables;
+ for (const auto& i : intervals) {
+ if (i.first < last_offset || i.first + i.second < i.first) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ last_offset = i.first + i.second;
+ }
+
+ return true;
+}
+
+bool ReadCollectionFont(Buffer* file, const uint8_t* data, size_t len,
+ Font* font,
+ std::map<uint32_t, Font::Table*>* all_tables) {
+ if (!file->ReadU32(&font->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (!ReadTrueTypeFont(file, data, len, font)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ for (auto& entry : font->tables) {
+ Font::Table& table = entry.second;
+
+ if (all_tables->find(table.offset) == all_tables->end()) {
+ (*all_tables)[table.offset] = font->FindTable(table.tag);
+ } else {
+ table.reuse_of = (*all_tables)[table.offset];
+ }
+
+ }
+ return true;
+}
+
+bool ReadTrueTypeCollection(Buffer* file, const uint8_t* data, size_t len,
+ FontCollection* font_collection) {
+ uint32_t num_fonts;
+
+ if (!file->ReadU32(&font_collection->header_version) ||
+ !file->ReadU32(&num_fonts)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ std::vector<uint32_t> offsets;
+ for (size_t i = 0; i < num_fonts; i++) {
+ uint32_t offset;
+ if (!file->ReadU32(&offset)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ offsets.push_back(offset);
+ }
+
+ font_collection->fonts.resize(offsets.size());
+ std::vector<Font>::iterator font_it = font_collection->fonts.begin();
+
+ std::map<uint32_t, Font::Table*> all_tables;
+ for (const auto offset : offsets) {
+ file->set_offset(offset);
+ Font& font = *font_it++;
+ if (!ReadCollectionFont(file, data, len, &font, &all_tables)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+bool ReadFont(const uint8_t* data, size_t len, Font* font) {
+ Buffer file(data, len);
+
+ if (!file.ReadU32(&font->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (font->flavor == kTtcFontFlavor) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return ReadTrueTypeFont(&file, data, len, font);
+}
+
+bool ReadFontCollection(const uint8_t* data, size_t len,
+ FontCollection* font_collection) {
+ Buffer file(data, len);
+
+ if (!file.ReadU32(&font_collection->flavor)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (font_collection->flavor != kTtcFontFlavor) {
+ font_collection->fonts.resize(1);
+ Font& font = font_collection->fonts[0];
+ font.flavor = font_collection->flavor;
+ return ReadTrueTypeFont(&file, data, len, &font);
+ }
+ return ReadTrueTypeCollection(&file, data, len, font_collection);
+}
+
+size_t FontFileSize(const Font& font) {
+ size_t max_offset = 12ULL + 16ULL * font.num_tables;
+ for (const auto& i : font.tables) {
+ const Font::Table& table = i.second;
+ size_t padding_size = (4 - (table.length & 3)) & 3;
+ size_t end_offset = (padding_size + table.offset) + table.length;
+ max_offset = std::max(max_offset, end_offset);
+ }
+ return max_offset;
+}
+
+size_t FontCollectionFileSize(const FontCollection& font_collection) {
+ size_t max_offset = 0;
+ for (auto& font : font_collection.fonts) {
+ // font file size actually just finds max offset
+ max_offset = std::max(max_offset, FontFileSize(font));
+ }
+ return max_offset;
+}
+
+bool WriteFont(const Font& font, uint8_t* dst, size_t dst_size) {
+ size_t offset = 0;
+ return WriteFont(font, &offset, dst, dst_size);
+}
+
+bool WriteTableRecord(const Font::Table* table, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (dst_size < *offset + kSfntEntrySize) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ StoreU32(table->tag, offset, dst);
+ StoreU32(table->checksum, offset, dst);
+ StoreU32(table->offset, offset, dst);
+ StoreU32(table->length, offset, dst);
+ return true;
+}
+
+bool WriteTable(const Font::Table& table, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (!WriteTableRecord(&table, offset, dst, dst_size)) {
+ return false;
+ }
+
+ // Write the actual table data if it's the first time we've seen it
+ if (!table.IsReused()) {
+ if (table.offset + table.length < table.offset ||
+ dst_size < table.offset + table.length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ memcpy(dst + table.offset, table.data, table.length);
+ size_t padding_size = (4 - (table.length & 3)) & 3;
+ if (table.offset + table.length + padding_size < padding_size ||
+ dst_size < table.offset + table.length + padding_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ memset(dst + table.offset + table.length, 0, padding_size);
+ }
+ return true;
+}
+
+bool WriteFont(const Font& font, size_t* offset, uint8_t* dst,
+ size_t dst_size) {
+ if (dst_size < 12ULL + 16ULL * font.num_tables) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ StoreU32(font.flavor, offset, dst);
+ Store16(font.num_tables, offset, dst);
+ uint16_t max_pow2 = font.num_tables ? Log2Floor(font.num_tables) : 0;
+ uint16_t search_range = max_pow2 ? 1 << (max_pow2 + 4) : 0;
+ uint16_t range_shift = (font.num_tables << 4) - search_range;
+ Store16(search_range, offset, dst);
+ Store16(max_pow2, offset, dst);
+ Store16(range_shift, offset, dst);
+
+ for (const auto& i : font.tables) {
+ if (!WriteTable(i.second, offset, dst, dst_size)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+bool WriteFontCollection(const FontCollection& font_collection, uint8_t* dst,
+ size_t dst_size) {
+ size_t offset = 0;
+
+ // It's simpler if this just a simple sfnt
+ if (font_collection.flavor != kTtcFontFlavor) {
+ return WriteFont(font_collection.fonts[0], &offset, dst, dst_size);
+ }
+
+ // Write TTC header
+ StoreU32(kTtcFontFlavor, &offset, dst);
+ StoreU32(font_collection.header_version, &offset, dst);
+ StoreU32(font_collection.fonts.size(), &offset, dst);
+
+ // Offset Table, zeroed for now
+ size_t offset_table = offset; // where to write offsets later
+ for (size_t i = 0; i < font_collection.fonts.size(); i++) {
+ StoreU32(0, &offset, dst);
+ }
+
+ if (font_collection.header_version == 0x00020000) {
+ StoreU32(0, &offset, dst); // ulDsigTag
+ StoreU32(0, &offset, dst); // ulDsigLength
+ StoreU32(0, &offset, dst); // ulDsigOffset
+ }
+
+ // Write fonts and their offsets.
+ for (size_t i = 0; i < font_collection.fonts.size(); i++) {
+ const auto& font = font_collection.fonts[i];
+ StoreU32(offset, &offset_table, dst);
+ if (!WriteFont(font, &offset, dst, dst_size)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+int NumGlyphs(const Font& font) {
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ const Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ if (head_table == NULL || loca_table == NULL || head_table->length < 52) {
+ return 0;
+ }
+ int index_fmt = IndexFormat(font);
+ int num_glyphs = (loca_table->length / (index_fmt == 0 ? 2 : 4)) - 1;
+ return num_glyphs;
+}
+
+int IndexFormat(const Font& font) {
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return 0;
+ }
+ return head_table->data[51];
+}
+
+bool Font::Table::IsReused() const {
+ return this->reuse_of != NULL;
+}
+
+bool GetGlyphData(const Font& font, int glyph_index,
+ const uint8_t** glyph_data, size_t* glyph_size) {
+ if (glyph_index < 0) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ const Font::Table* head_table = font.FindTable(kHeadTableTag);
+ const Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ const Font::Table* glyf_table = font.FindTable(kGlyfTableTag);
+ if (head_table == NULL || loca_table == NULL || glyf_table == NULL ||
+ head_table->length < 52) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ int index_fmt = IndexFormat(font);
+
+ Buffer loca_buf(loca_table->data, loca_table->length);
+ if (index_fmt == 0) {
+ uint16_t offset1, offset2;
+ if (!loca_buf.Skip(2 * glyph_index) ||
+ !loca_buf.ReadU16(&offset1) ||
+ !loca_buf.ReadU16(&offset2) ||
+ offset2 < offset1 ||
+ 2 * offset2 > glyf_table->length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *glyph_data = glyf_table->data + 2 * offset1;
+ *glyph_size = 2 * (offset2 - offset1);
+ } else {
+ uint32_t offset1, offset2;
+ if (!loca_buf.Skip(4 * glyph_index) ||
+ !loca_buf.ReadU32(&offset1) ||
+ !loca_buf.ReadU32(&offset2) ||
+ offset2 < offset1 ||
+ offset2 > glyf_table->length) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *glyph_data = glyf_table->data + offset1;
+ *glyph_size = offset2 - offset1;
+ }
+ return true;
+}
+
+bool RemoveDigitalSignature(Font* font) {
+ std::map<uint32_t, Font::Table>::iterator it =
+ font->tables.find(kDsigTableTag);
+ if (it != font->tables.end()) {
+ font->tables.erase(it);
+ font->num_tables = font->tables.size();
+ }
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.h
new file mode 100644
index 00000000000..93806e6b5ee
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/font.h
@@ -0,0 +1,113 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Data model for a font file in sfnt format, reading and writing functions and
+// accessors for the glyph data.
+
+#ifndef WOFF2_FONT_H_
+#define WOFF2_FONT_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <map>
+#include <vector>
+
+namespace woff2 {
+
+// Represents an sfnt font file. Only the table directory is parsed, for the
+// table data we only store a raw pointer, therefore a font object is valid only
+// as long the data from which it was parsed is around.
+struct Font {
+ uint32_t flavor;
+ uint16_t num_tables;
+
+ struct Table {
+ uint32_t tag;
+ uint32_t checksum;
+ uint32_t offset;
+ uint32_t length;
+ const uint8_t* data;
+
+ // Buffer used to mutate the data before writing out.
+ std::vector<uint8_t> buffer;
+
+ // If we've seen this tag/offset before, pointer to the first time we saw it
+ // If this is the first time we've seen this table, NULL
+ // Intended use is to bypass re-processing tables
+ Font::Table* reuse_of;
+
+ uint8_t flag_byte;
+
+ // Is this table reused by a TTC
+ bool IsReused() const;
+ };
+ std::map<uint32_t, Table> tables;
+ std::vector<uint32_t> OutputOrderedTags() const;
+
+ Table* FindTable(uint32_t tag);
+ const Table* FindTable(uint32_t tag) const;
+};
+
+// Accomodates both singular (OTF, TTF) and collection (TTC) fonts
+struct FontCollection {
+ uint32_t flavor;
+ uint32_t header_version;
+ // (offset, first use of table*) pairs
+ std::map<uint32_t, Font::Table*> tables;
+ std::vector<Font> fonts;
+};
+
+// Parses the font from the given data. Returns false on parsing failure or
+// buffer overflow. The font is valid only so long the input data pointer is
+// valid. Does NOT support collections.
+bool ReadFont(const uint8_t* data, size_t len, Font* font);
+
+// Parses the font from the given data. Returns false on parsing failure or
+// buffer overflow. The font is valid only so long the input data pointer is
+// valid. Supports collections.
+bool ReadFontCollection(const uint8_t* data, size_t len, FontCollection* fonts);
+
+// Returns the file size of the font.
+size_t FontFileSize(const Font& font);
+size_t FontCollectionFileSize(const FontCollection& font);
+
+// Writes the font into the specified dst buffer. The dst_size should be the
+// same as returned by FontFileSize(). Returns false upon buffer overflow (which
+// should not happen if dst_size was computed by FontFileSize()).
+bool WriteFont(const Font& font, uint8_t* dst, size_t dst_size);
+// Write the font at a specific offset
+bool WriteFont(const Font& font, size_t* offset, uint8_t* dst, size_t dst_size);
+
+bool WriteFontCollection(const FontCollection& font_collection, uint8_t* dst,
+ size_t dst_size);
+
+// Returns the number of glyphs in the font.
+// NOTE: Currently this works only for TrueType-flavored fonts, will return
+// zero for CFF-flavored fonts.
+int NumGlyphs(const Font& font);
+
+// Returns the index format of the font
+int IndexFormat(const Font& font);
+
+// Sets *glyph_data and *glyph_size to point to the location of the glyph data
+// with the given index. Returns false if the glyph is not found.
+bool GetGlyphData(const Font& font, int glyph_index,
+ const uint8_t** glyph_data, size_t* glyph_size);
+
+// Removes the digital signature (DSIG) table
+bool RemoveDigitalSignature(Font* font);
+
+} // namespace woff2
+
+#endif // WOFF2_FONT_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.cc
new file mode 100644
index 00000000000..1dadafcb700
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.cc
@@ -0,0 +1,380 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Glyph manipulation
+
+#include "./glyph.h"
+
+#include <stdlib.h>
+#include <limits>
+#include "./buffer.h"
+#include "./store_bytes.h"
+
+namespace woff2 {
+
+static const int32_t kFLAG_ONCURVE = 1;
+static const int32_t kFLAG_XSHORT = 1 << 1;
+static const int32_t kFLAG_YSHORT = 1 << 2;
+static const int32_t kFLAG_REPEAT = 1 << 3;
+static const int32_t kFLAG_XREPEATSIGN = 1 << 4;
+static const int32_t kFLAG_YREPEATSIGN = 1 << 5;
+static const int32_t kFLAG_ARG_1_AND_2_ARE_WORDS = 1 << 0;
+static const int32_t kFLAG_WE_HAVE_A_SCALE = 1 << 3;
+static const int32_t kFLAG_MORE_COMPONENTS = 1 << 5;
+static const int32_t kFLAG_WE_HAVE_AN_X_AND_Y_SCALE = 1 << 6;
+static const int32_t kFLAG_WE_HAVE_A_TWO_BY_TWO = 1 << 7;
+static const int32_t kFLAG_WE_HAVE_INSTRUCTIONS = 1 << 8;
+
+bool ReadCompositeGlyphData(Buffer* buffer, Glyph* glyph) {
+ glyph->have_instructions = false;
+ glyph->composite_data = buffer->buffer() + buffer->offset();
+ size_t start_offset = buffer->offset();
+ uint16_t flags = kFLAG_MORE_COMPONENTS;
+ while (flags & kFLAG_MORE_COMPONENTS) {
+ if (!buffer->ReadU16(&flags)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->have_instructions |= (flags & kFLAG_WE_HAVE_INSTRUCTIONS) != 0;
+ size_t arg_size = 2; // glyph index
+ if (flags & kFLAG_ARG_1_AND_2_ARE_WORDS) {
+ arg_size += 4;
+ } else {
+ arg_size += 2;
+ }
+ if (flags & kFLAG_WE_HAVE_A_SCALE) {
+ arg_size += 2;
+ } else if (flags & kFLAG_WE_HAVE_AN_X_AND_Y_SCALE) {
+ arg_size += 4;
+ } else if (flags & kFLAG_WE_HAVE_A_TWO_BY_TWO) {
+ arg_size += 8;
+ }
+ if (!buffer->Skip(arg_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ if (buffer->offset() - start_offset > std::numeric_limits<uint32_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->composite_data_size = buffer->offset() - start_offset;
+ return true;
+}
+
+bool ReadGlyph(const uint8_t* data, size_t len, Glyph* glyph) {
+ Buffer buffer(data, len);
+
+ int16_t num_contours;
+ if (!buffer.ReadS16(&num_contours)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Read the bounding box.
+ if (!buffer.ReadS16(&glyph->x_min) ||
+ !buffer.ReadS16(&glyph->y_min) ||
+ !buffer.ReadS16(&glyph->x_max) ||
+ !buffer.ReadS16(&glyph->y_max)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (num_contours == 0) {
+ // Empty glyph.
+ return true;
+ }
+
+ if (num_contours > 0) {
+ // Simple glyph.
+ glyph->contours.resize(num_contours);
+
+ // Read the number of points per contour.
+ uint16_t last_point_index = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ uint16_t point_index;
+ if (!buffer.ReadU16(&point_index)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint16_t num_points = point_index - last_point_index + (i == 0 ? 1 : 0);
+ glyph->contours[i].resize(num_points);
+ last_point_index = point_index;
+ }
+
+ // Read the instructions.
+ if (!buffer.ReadU16(&glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->instructions_data = data + buffer.offset();
+ if (!buffer.Skip(glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Read the run-length coded flags.
+ std::vector<std::vector<uint8_t> > flags(num_contours);
+ uint8_t flag = 0;
+ uint8_t flag_repeat = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ flags[i].resize(glyph->contours[i].size());
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ if (flag_repeat == 0) {
+ if (!buffer.ReadU8(&flag)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (flag & kFLAG_REPEAT) {
+ if (!buffer.ReadU8(&flag_repeat)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ } else {
+ flag_repeat--;
+ }
+ flags[i][j] = flag;
+ glyph->contours[i][j].on_curve = flag & kFLAG_ONCURVE;
+ }
+ }
+
+ // Read the x coordinates.
+ int prev_x = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ uint8_t flag = flags[i][j];
+ if (flag & kFLAG_XSHORT) {
+ // single byte x-delta coord value
+ uint8_t x_delta;
+ if (!buffer.ReadU8(&x_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ int sign = (flag & kFLAG_XREPEATSIGN) ? 1 : -1;
+ glyph->contours[i][j].x = prev_x + sign * x_delta;
+ } else {
+ // double byte x-delta coord value
+ int16_t x_delta = 0;
+ if (!(flag & kFLAG_XREPEATSIGN)) {
+ if (!buffer.ReadS16(&x_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ glyph->contours[i][j].x = prev_x + x_delta;
+ }
+ prev_x = glyph->contours[i][j].x;
+ }
+ }
+
+ // Read the y coordinates.
+ int prev_y = 0;
+ for (int i = 0; i < num_contours; ++i) {
+ for (size_t j = 0; j < glyph->contours[i].size(); ++j) {
+ uint8_t flag = flags[i][j];
+ if (flag & kFLAG_YSHORT) {
+ // single byte y-delta coord value
+ uint8_t y_delta;
+ if (!buffer.ReadU8(&y_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ int sign = (flag & kFLAG_YREPEATSIGN) ? 1 : -1;
+ glyph->contours[i][j].y = prev_y + sign * y_delta;
+ } else {
+ // double byte y-delta coord value
+ int16_t y_delta = 0;
+ if (!(flag & kFLAG_YREPEATSIGN)) {
+ if (!buffer.ReadS16(&y_delta)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ glyph->contours[i][j].y = prev_y + y_delta;
+ }
+ prev_y = glyph->contours[i][j].y;
+ }
+ }
+ } else if (num_contours == -1) {
+ // Composite glyph.
+ if (!ReadCompositeGlyphData(&buffer, glyph)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Read the instructions.
+ if (glyph->have_instructions) {
+ if (!buffer.ReadU16(&glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyph->instructions_data = data + buffer.offset();
+ if (!buffer.Skip(glyph->instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ glyph->instructions_size = 0;
+ }
+ } else {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+namespace {
+
+void StoreBbox(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ Store16(glyph.x_min, offset, dst);
+ Store16(glyph.y_min, offset, dst);
+ Store16(glyph.x_max, offset, dst);
+ Store16(glyph.y_max, offset, dst);
+}
+
+void StoreInstructions(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ Store16(glyph.instructions_size, offset, dst);
+ StoreBytes(glyph.instructions_data, glyph.instructions_size, offset, dst);
+}
+
+bool StoreEndPtsOfContours(const Glyph& glyph, size_t* offset, uint8_t* dst) {
+ int end_point = -1;
+ for (const auto& contour : glyph.contours) {
+ end_point += contour.size();
+ if (contour.size() > std::numeric_limits<uint16_t>::max() ||
+ end_point > std::numeric_limits<uint16_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(end_point, offset, dst);
+ }
+ return true;
+}
+
+bool StorePoints(const Glyph& glyph, size_t* offset,
+ uint8_t* dst, size_t dst_size) {
+ int last_flag = -1;
+ int repeat_count = 0;
+ int last_x = 0;
+ int last_y = 0;
+ size_t x_bytes = 0;
+ size_t y_bytes = 0;
+
+ // Store the flags and calculate the total size of the x and y coordinates.
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ int flag = point.on_curve ? kFLAG_ONCURVE : 0;
+ int dx = point.x - last_x;
+ int dy = point.y - last_y;
+ if (dx == 0) {
+ flag |= kFLAG_XREPEATSIGN;
+ } else if (dx > -256 && dx < 256) {
+ flag |= kFLAG_XSHORT | (dx > 0 ? kFLAG_XREPEATSIGN : 0);
+ x_bytes += 1;
+ } else {
+ x_bytes += 2;
+ }
+ if (dy == 0) {
+ flag |= kFLAG_YREPEATSIGN;
+ } else if (dy > -256 && dy < 256) {
+ flag |= kFLAG_YSHORT | (dy > 0 ? kFLAG_YREPEATSIGN : 0);
+ y_bytes += 1;
+ } else {
+ y_bytes += 2;
+ }
+ if (flag == last_flag && repeat_count != 255) {
+ dst[*offset - 1] |= kFLAG_REPEAT;
+ repeat_count++;
+ } else {
+ if (repeat_count != 0) {
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = repeat_count;
+ }
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = flag;
+ repeat_count = 0;
+ }
+ last_x = point.x;
+ last_y = point.y;
+ last_flag = flag;
+ }
+ }
+ if (repeat_count != 0) {
+ if (*offset >= dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ dst[(*offset)++] = repeat_count;
+ }
+
+ if (*offset + x_bytes + y_bytes > dst_size) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Store the x and y coordinates.
+ size_t x_offset = *offset;
+ size_t y_offset = *offset + x_bytes;
+ last_x = 0;
+ last_y = 0;
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ int dx = point.x - last_x;
+ int dy = point.y - last_y;
+ if (dx == 0) {
+ // pass
+ } else if (dx > -256 && dx < 256) {
+ dst[x_offset++] = std::abs(dx);
+ } else {
+ Store16(dx, &x_offset, dst);
+ }
+ if (dy == 0) {
+ // pass
+ } else if (dy > -256 && dy < 256) {
+ dst[y_offset++] = std::abs(dy);
+ } else {
+ Store16(dy, &y_offset, dst);
+ }
+ last_x += dx;
+ last_y += dy;
+ }
+ }
+ *offset = y_offset;
+ return true;
+}
+
+} // namespace
+
+bool StoreGlyph(const Glyph& glyph, uint8_t* dst, size_t* dst_size) {
+ size_t offset = 0;
+ if (glyph.composite_data_size > 0) {
+ // Composite glyph.
+ if (*dst_size < ((10ULL + glyph.composite_data_size) +
+ ((glyph.have_instructions ? 2ULL : 0) +
+ glyph.instructions_size))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(-1, &offset, dst);
+ StoreBbox(glyph, &offset, dst);
+ StoreBytes(glyph.composite_data, glyph.composite_data_size, &offset, dst);
+ if (glyph.have_instructions) {
+ StoreInstructions(glyph, &offset, dst);
+ }
+ } else if (glyph.contours.size() > 0) {
+ // Simple glyph.
+ if (glyph.contours.size() > std::numeric_limits<int16_t>::max()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (*dst_size < ((12ULL + 2 * glyph.contours.size()) +
+ glyph.instructions_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ Store16(glyph.contours.size(), &offset, dst);
+ StoreBbox(glyph, &offset, dst);
+ if (!StoreEndPtsOfContours(glyph, &offset, dst)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ StoreInstructions(glyph, &offset, dst);
+ if (!StorePoints(glyph, &offset, dst, *dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+ *dst_size = offset;
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.h
new file mode 100644
index 00000000000..0ee755c2f5a
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/glyph.h
@@ -0,0 +1,71 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Data model and I/O for glyph data within sfnt format files for the purpose of
+// performing the preprocessing step of the WOFF 2.0 conversion.
+
+#ifndef WOFF2_GLYPH_H_
+#define WOFF2_GLYPH_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <vector>
+
+namespace woff2 {
+
+// Represents a parsed simple or composite glyph. The composite glyph data and
+// instructions are un-parsed and we keep only pointers to the raw data,
+// therefore the glyph is valid only so long the data from which it was parsed
+// is around.
+class Glyph {
+ public:
+ Glyph() : instructions_size(0), composite_data_size(0) {}
+
+ // Bounding box.
+ int16_t x_min;
+ int16_t x_max;
+ int16_t y_min;
+ int16_t y_max;
+
+ // Instructions.
+ uint16_t instructions_size;
+ const uint8_t* instructions_data;
+
+ // Data model for simple glyphs.
+ struct Point {
+ int x;
+ int y;
+ bool on_curve;
+ };
+ std::vector<std::vector<Point> > contours;
+
+ // Data for composite glyphs.
+ const uint8_t* composite_data;
+ uint32_t composite_data_size;
+ bool have_instructions;
+};
+
+// Parses the glyph from the given data. Returns false on parsing failure or
+// buffer overflow. The glyph is valid only so long the input data pointer is
+// valid.
+bool ReadGlyph(const uint8_t* data, size_t len, Glyph* glyph);
+
+// Stores the glyph into the specified dst buffer. The *dst_size is the buffer
+// size on entry and is set to the actual (unpadded) stored size on exit.
+// Returns false on buffer overflow.
+bool StoreGlyph(const Glyph& glyph, uint8_t* dst, size_t* dst_size);
+
+} // namespace woff2
+
+#endif // WOFF2_GLYPH_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.cc
new file mode 100644
index 00000000000..b538b91a89f
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.cc
@@ -0,0 +1,322 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Glyph normalization
+
+#include "./normalize.h"
+
+#include <inttypes.h>
+#include <stddef.h>
+
+#include "./buffer.h"
+#include "./port.h"
+#include "./font.h"
+#include "./glyph.h"
+#include "./round.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+namespace {
+
+void StoreLoca(int index_fmt, uint32_t value, size_t* offset, uint8_t* dst) {
+ if (index_fmt == 0) {
+ Store16(value >> 1, offset, dst);
+ } else {
+ StoreU32(value, offset, dst);
+ }
+}
+
+} // namespace
+
+namespace {
+
+bool WriteNormalizedLoca(int index_fmt, int num_glyphs, Font* font) {
+ Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font->FindTable(kLocaTableTag);
+
+ int glyph_sz = index_fmt == 0 ? 2 : 4;
+ loca_table->buffer.resize(Round4(num_glyphs + 1) * glyph_sz);
+ loca_table->length = (num_glyphs + 1) * glyph_sz;
+
+ uint8_t* glyf_dst = &glyf_table->buffer[0];
+ uint8_t* loca_dst = &loca_table->buffer[0];
+ uint32_t glyf_offset = 0;
+ size_t loca_offset = 0;
+
+ for (int i = 0; i < num_glyphs; ++i) {
+ StoreLoca(index_fmt, glyf_offset, &loca_offset, loca_dst);
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ size_t glyf_dst_size = glyf_table->buffer.size() - glyf_offset;
+ if (!StoreGlyph(glyph, glyf_dst + glyf_offset, &glyf_dst_size)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyf_dst_size = Round4(glyf_dst_size);
+ if (glyf_dst_size > std::numeric_limits<uint32_t>::max() ||
+ glyf_offset + static_cast<uint32_t>(glyf_dst_size) < glyf_offset ||
+ (index_fmt == 0 && glyf_offset + glyf_dst_size >= (1UL << 17))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ glyf_offset += glyf_dst_size;
+ }
+ if (glyf_offset == 0) {
+ return false;
+ }
+
+ StoreLoca(index_fmt, glyf_offset, &loca_offset, loca_dst);
+
+ glyf_table->buffer.resize(glyf_offset);
+ glyf_table->data = &glyf_table->buffer[0];
+ glyf_table->length = glyf_offset;
+ loca_table->data = &loca_table->buffer[0];
+
+ return true;
+}
+
+} // namespace
+
+namespace {
+
+bool MakeEditableBuffer(Font* font, int tableTag) {
+ Font::Table* table = font->FindTable(tableTag);
+ if (table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (table->IsReused()) {
+ return true;
+ }
+ int sz = Round4(table->length);
+ table->buffer.resize(sz);
+ uint8_t* buf = &table->buffer[0];
+ memcpy(buf, table->data, sz);
+ table->data = buf;
+ return true;
+}
+
+} // namespace
+
+bool NormalizeGlyphs(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font->FindTable(kLocaTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // If you don't have glyf/loca this transform isn't very interesting
+ if (loca_table == NULL && glyf_table == NULL) {
+ return true;
+ }
+ // It would be best if you didn't have just one of glyf/loca
+ if ((glyf_table == NULL) != (loca_table == NULL)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Must share neither or both loca & glyf
+ if (loca_table->IsReused() != glyf_table->IsReused()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (loca_table->IsReused()) {
+ return true;
+ }
+
+ int index_fmt = head_table->data[51];
+ int num_glyphs = NumGlyphs(*font);
+
+ // We need to allocate a bit more than its original length for the normalized
+ // glyf table, since it can happen that the glyphs in the original table are
+ // 2-byte aligned, while in the normalized table they are 4-byte aligned.
+ // That gives a maximum of 2 bytes increase per glyph. However, there is no
+ // theoretical guarantee that the total size of the flags plus the coordinates
+ // is the smallest possible in the normalized version, so we have to allow
+ // some general overhead.
+ // TODO(user) Figure out some more precise upper bound on the size of
+ // the overhead.
+ size_t max_normalized_glyf_size = 1.1 * glyf_table->length + 2 * num_glyphs;
+
+ glyf_table->buffer.resize(max_normalized_glyf_size);
+
+ // if we can't write a loca using short's (index_fmt 0)
+ // try again using longs (index_fmt 1)
+ if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) {
+ if (index_fmt != 0) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Rewrite loca with 4-byte entries & update head to match
+ index_fmt = 1;
+ if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ head_table->buffer[51] = 1;
+ }
+
+ return true;
+}
+
+bool NormalizeOffsets(Font* font) {
+ uint32_t offset = 12 + 16 * font->num_tables;
+ for (auto tag : font->OutputOrderedTags()) {
+ auto& table = font->tables[tag];
+ table.offset = offset;
+ offset += Round4(table.length);
+ }
+ return true;
+}
+
+namespace {
+
+uint32_t ComputeHeaderChecksum(const Font& font) {
+ uint32_t checksum = font.flavor;
+ uint16_t max_pow2 = font.num_tables ? Log2Floor(font.num_tables) : 0;
+ uint16_t search_range = max_pow2 ? 1 << (max_pow2 + 4) : 0;
+ uint16_t range_shift = (font.num_tables << 4) - search_range;
+ checksum += (font.num_tables << 16 | search_range);
+ checksum += (max_pow2 << 16 | range_shift);
+ for (const auto& i : font.tables) {
+ const Font::Table* table = &i.second;
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ checksum += table->tag;
+ checksum += table->checksum;
+ checksum += table->offset;
+ checksum += table->length;
+ }
+ return checksum;
+}
+
+} // namespace
+
+bool FixChecksums(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (head_table->reuse_of != NULL) {
+ head_table = head_table->reuse_of;
+ }
+ if (head_table->length < 12) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ uint8_t* head_buf = &head_table->buffer[0];
+ size_t offset = 8;
+ StoreU32(0, &offset, head_buf);
+ uint32_t file_checksum = 0;
+ uint32_t head_checksum = 0;
+ for (auto& i : font->tables) {
+ Font::Table* table = &i.second;
+ if (table->IsReused()) {
+ table = table->reuse_of;
+ }
+ table->checksum = ComputeULongSum(table->data, table->length);
+ file_checksum += table->checksum;
+
+ if (table->tag == kHeadTableTag) {
+ head_checksum = table->checksum;
+ }
+ }
+
+ file_checksum += ComputeHeaderChecksum(*font);
+ offset = 8;
+ StoreU32(0xb1b0afba - file_checksum, &offset, head_buf);
+
+ return true;
+}
+
+namespace {
+bool MarkTransformed(Font* font) {
+ Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (head_table->reuse_of != NULL) {
+ head_table = head_table->reuse_of;
+ }
+ if (head_table->length < 17) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // set bit 11 of head table 'flags' to indicate that font has undergone
+ // lossless modifying transform
+ int head_flags = head_table->data[16];
+ head_table->buffer[16] = head_flags | 0x08;
+ return true;
+}
+} // namespace
+
+
+bool NormalizeWithoutFixingChecksums(Font* font) {
+ return (MakeEditableBuffer(font, kHeadTableTag) &&
+ RemoveDigitalSignature(font) &&
+ MarkTransformed(font) &&
+ NormalizeGlyphs(font) &&
+ NormalizeOffsets(font));
+}
+
+bool NormalizeFont(Font* font) {
+ return (NormalizeWithoutFixingChecksums(font) &&
+ FixChecksums(font));
+}
+
+bool NormalizeFontCollection(FontCollection* font_collection) {
+ if (font_collection->fonts.size() == 1) {
+ return NormalizeFont(&font_collection->fonts[0]);
+ }
+
+ uint32_t offset = CollectionHeaderSize(font_collection->header_version,
+ font_collection->fonts.size());
+ for (auto& font : font_collection->fonts) {
+ if (!NormalizeWithoutFixingChecksums(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Font normalization failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ offset += kSfntHeaderSize + kSfntEntrySize * font.num_tables;
+ }
+
+ // Start table offsets after TTC Header and Sfnt Headers
+ for (auto& font : font_collection->fonts) {
+ for (auto tag : font.OutputOrderedTags()) {
+ Font::Table& table = font.tables[tag];
+ if (table.IsReused()) {
+ table.offset = table.reuse_of->offset;
+ } else {
+ table.offset = offset;
+ offset += Round4(table.length);
+ }
+ }
+ }
+
+ // Now we can fix the checksums
+ for (auto& font : font_collection->fonts) {
+ if (!FixChecksums(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Failed to fix checksums\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.h
new file mode 100644
index 00000000000..e0153488ed3
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/normalize.h
@@ -0,0 +1,47 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Functions for normalizing fonts. Since the WOFF 2.0 decoder creates font
+// files in normalized form, the WOFF 2.0 conversion is guaranteed to be
+// lossless (in a bitwise sense) only for normalized font files.
+
+#ifndef WOFF2_NORMALIZE_H_
+#define WOFF2_NORMALIZE_H_
+
+namespace woff2 {
+
+struct Font;
+struct FontCollection;
+
+// Changes the offset fields of the table headers so that the data for the
+// tables will be written in order of increasing tag values, without any gaps
+// other than the 4-byte padding.
+bool NormalizeOffsets(Font* font);
+
+// Changes the checksum fields of the table headers and the checksum field of
+// the head table so that it matches the current data.
+bool FixChecksums(Font* font);
+
+// Parses each of the glyphs in the font and writes them again to the glyf
+// table in normalized form, as defined by the StoreGlyph() function. Changes
+// the loca table accordigly.
+bool NormalizeGlyphs(Font* font);
+
+// Performs all of the normalization steps above.
+bool NormalizeFont(Font* font);
+bool NormalizeFontCollection(FontCollection* font_collection);
+
+} // namespace woff2
+
+#endif // WOFF2_NORMALIZE_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/port.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/port.h
new file mode 100644
index 00000000000..bac47a93a61
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/port.h
@@ -0,0 +1,63 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper function for bit twiddling and macros for branch prediction.
+
+#ifndef WOFF2_PORT_H_
+#define WOFF2_PORT_H_
+
+#include <assert.h>
+
+namespace woff2 {
+
+typedef unsigned int uint32;
+
+inline int Log2Floor(uint32 n) {
+#if defined(__GNUC__)
+ return n == 0 ? -1 : 31 ^ __builtin_clz(n);
+#else
+ if (n == 0)
+ return -1;
+ int log = 0;
+ uint32 value = n;
+ for (int i = 4; i >= 0; --i) {
+ int shift = (1 << i);
+ uint32 x = value >> shift;
+ if (x != 0) {
+ value = x;
+ log += shift;
+ }
+ }
+ assert(value == 1);
+ return log;
+#endif
+}
+
+} // namespace woff2
+
+/* Compatibility with non-clang compilers. */
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 95) || \
+ (defined(__llvm__) && __has_builtin(__builtin_expect))
+#define PREDICT_FALSE(x) (__builtin_expect(x, 0))
+#define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
+#else
+#define PREDICT_FALSE(x) (x)
+#define PREDICT_TRUE(x) (x)
+#endif
+
+#endif // WOFF2_PORT_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/round.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/round.h
new file mode 100644
index 00000000000..abb81f8235d
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/round.h
@@ -0,0 +1,35 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper for rounding
+
+#ifndef WOFF2_ROUND_H_
+#define WOFF2_ROUND_H_
+
+#include <limits>
+
+namespace woff2 {
+
+// Round a value up to the nearest multiple of 4. Don't round the value in the
+// case that rounding up overflows.
+template<typename T> T Round4(T value) {
+ if (std::numeric_limits<T>::max() - value < 3) {
+ return value;
+ }
+ return (value + 3) & ~3;
+}
+
+} // namespace woff2
+
+#endif // WOFF2_ROUND_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/store_bytes.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/store_bytes.h
new file mode 100644
index 00000000000..74b279c4277
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/store_bytes.h
@@ -0,0 +1,77 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper functions for storing integer values into byte streams.
+// No bounds checking is performed, that is the responsibility of the caller.
+
+#ifndef WOFF2_STORE_BYTES_H_
+#define WOFF2_STORE_BYTES_H_
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <string.h>
+
+namespace woff2 {
+
+inline size_t StoreU32(uint8_t* dst, size_t offset, uint32_t x) {
+ dst[offset] = x >> 24;
+ dst[offset + 1] = x >> 16;
+ dst[offset + 2] = x >> 8;
+ dst[offset + 3] = x;
+ return offset + 4;
+}
+
+inline size_t Store16(uint8_t* dst, size_t offset, int x) {
+#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
+ *reinterpret_cast<uint16_t*>(dst + offset) =
+ ((x & 0xFF) << 8) | ((x & 0xFF00) >> 8);
+#elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
+ *reinterpret_cast<uint16_t*>(dst + offset) = static_cast<uint16_t>(x);
+#else
+ dst[offset] = x >> 8;
+ dst[offset + 1] = x;
+#endif
+ return offset + 2;
+}
+
+inline void StoreU32(uint32_t val, size_t* offset, uint8_t* dst) {
+ dst[(*offset)++] = val >> 24;
+ dst[(*offset)++] = val >> 16;
+ dst[(*offset)++] = val >> 8;
+ dst[(*offset)++] = val;
+}
+
+inline void Store16(int val, size_t* offset, uint8_t* dst) {
+#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
+ *reinterpret_cast<uint16_t*>(dst + *offset) =
+ ((val & 0xFF) << 8) | ((val & 0xFF00) >> 8);
+ *offset += 2;
+#elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
+ *reinterpret_cast<uint16_t*>(dst + *offset) = static_cast<uint16_t>(val);
+ *offset += 2;
+#else
+ dst[(*offset)++] = val >> 8;
+ dst[(*offset)++] = val;
+#endif
+}
+
+inline void StoreBytes(const uint8_t* data, size_t len,
+ size_t* offset, uint8_t* dst) {
+ memcpy(&dst[*offset], data, len);
+ *offset += len;
+}
+
+} // namespace woff2
+
+#endif // WOFF2_STORE_BYTES_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.cc
new file mode 100644
index 00000000000..0071e00b00c
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.cc
@@ -0,0 +1,90 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Font table tags
+
+#include "./table_tags.h"
+
+namespace woff2 {
+
+// Note that the byte order is big-endian, not the same as ots.cc
+#define TAG(a, b, c, d) ((a << 24) | (b << 16) | (c << 8) | d)
+
+const uint32_t kKnownTags[63] = {
+ TAG('c', 'm', 'a', 'p'), // 0
+ TAG('h', 'e', 'a', 'd'), // 1
+ TAG('h', 'h', 'e', 'a'), // 2
+ TAG('h', 'm', 't', 'x'), // 3
+ TAG('m', 'a', 'x', 'p'), // 4
+ TAG('n', 'a', 'm', 'e'), // 5
+ TAG('O', 'S', '/', '2'), // 6
+ TAG('p', 'o', 's', 't'), // 7
+ TAG('c', 'v', 't', ' '), // 8
+ TAG('f', 'p', 'g', 'm'), // 9
+ TAG('g', 'l', 'y', 'f'), // 10
+ TAG('l', 'o', 'c', 'a'), // 11
+ TAG('p', 'r', 'e', 'p'), // 12
+ TAG('C', 'F', 'F', ' '), // 13
+ TAG('V', 'O', 'R', 'G'), // 14
+ TAG('E', 'B', 'D', 'T'), // 15
+ TAG('E', 'B', 'L', 'C'), // 16
+ TAG('g', 'a', 's', 'p'), // 17
+ TAG('h', 'd', 'm', 'x'), // 18
+ TAG('k', 'e', 'r', 'n'), // 19
+ TAG('L', 'T', 'S', 'H'), // 20
+ TAG('P', 'C', 'L', 'T'), // 21
+ TAG('V', 'D', 'M', 'X'), // 22
+ TAG('v', 'h', 'e', 'a'), // 23
+ TAG('v', 'm', 't', 'x'), // 24
+ TAG('B', 'A', 'S', 'E'), // 25
+ TAG('G', 'D', 'E', 'F'), // 26
+ TAG('G', 'P', 'O', 'S'), // 27
+ TAG('G', 'S', 'U', 'B'), // 28
+ TAG('E', 'B', 'S', 'C'), // 29
+ TAG('J', 'S', 'T', 'F'), // 30
+ TAG('M', 'A', 'T', 'H'), // 31
+ TAG('C', 'B', 'D', 'T'), // 32
+ TAG('C', 'B', 'L', 'C'), // 33
+ TAG('C', 'O', 'L', 'R'), // 34
+ TAG('C', 'P', 'A', 'L'), // 35
+ TAG('S', 'V', 'G', ' '), // 36
+ TAG('s', 'b', 'i', 'x'), // 37
+ TAG('a', 'c', 'n', 't'), // 38
+ TAG('a', 'v', 'a', 'r'), // 39
+ TAG('b', 'd', 'a', 't'), // 40
+ TAG('b', 'l', 'o', 'c'), // 41
+ TAG('b', 's', 'l', 'n'), // 42
+ TAG('c', 'v', 'a', 'r'), // 43
+ TAG('f', 'd', 's', 'c'), // 44
+ TAG('f', 'e', 'a', 't'), // 45
+ TAG('f', 'm', 't', 'x'), // 46
+ TAG('f', 'v', 'a', 'r'), // 47
+ TAG('g', 'v', 'a', 'r'), // 48
+ TAG('h', 's', 't', 'y'), // 49
+ TAG('j', 'u', 's', 't'), // 50
+ TAG('l', 'c', 'a', 'r'), // 51
+ TAG('m', 'o', 'r', 't'), // 52
+ TAG('m', 'o', 'r', 'x'), // 53
+ TAG('o', 'p', 'b', 'd'), // 54
+ TAG('p', 'r', 'o', 'p'), // 55
+ TAG('t', 'r', 'a', 'k'), // 56
+ TAG('Z', 'a', 'p', 'f'), // 57
+ TAG('S', 'i', 'l', 'f'), // 58
+ TAG('G', 'l', 'a', 't'), // 59
+ TAG('G', 'l', 'o', 'c'), // 60
+ TAG('F', 'e', 'a', 't'), // 61
+ TAG('S', 'i', 'l', 'l'), // 62
+};
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.h
new file mode 100644
index 00000000000..daa5d9215de
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/table_tags.h
@@ -0,0 +1,38 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Font table tags
+
+#ifndef WOFF2_TABLE_TAGS_H_
+#define WOFF2_TABLE_TAGS_H_
+
+#include <inttypes.h>
+
+namespace woff2 {
+
+// Tags of popular tables.
+static const uint32_t kGlyfTableTag = 0x676c7966;
+static const uint32_t kHeadTableTag = 0x68656164;
+static const uint32_t kLocaTableTag = 0x6c6f6361;
+static const uint32_t kDsigTableTag = 0x44534947;
+static const uint32_t kCffTableTag = 0x43464620;
+static const uint32_t kHmtxTableTag = 0x686d7478;
+static const uint32_t kHheaTableTag = 0x68686561;
+static const uint32_t kMaxpTableTag = 0x6d617870;
+
+extern const uint32_t kKnownTags[];
+
+} // namespace woff2
+
+#endif // WOFF2_TABLE_TAGS_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.cc
new file mode 100644
index 00000000000..2ad8b163c3c
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.cc
@@ -0,0 +1,420 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Library for preprocessing fonts as part of the WOFF 2.0 conversion.
+
+#include "./transform.h"
+
+#include <complex> // for std::abs
+
+#include "./buffer.h"
+#include "./font.h"
+#include "./glyph.h"
+#include "./table_tags.h"
+#include "./variable_length.h"
+
+namespace woff2 {
+
+namespace {
+
+const int FLAG_ARG_1_AND_2_ARE_WORDS = 1 << 0;
+const int FLAG_WE_HAVE_INSTRUCTIONS = 1 << 8;
+
+void WriteBytes(std::vector<uint8_t>* out, const uint8_t* data, size_t len) {
+ if (len == 0) return;
+ size_t offset = out->size();
+ out->resize(offset + len);
+ memcpy(&(*out)[offset], data, len);
+}
+
+void WriteBytes(std::vector<uint8_t>* out, const std::vector<uint8_t>& in) {
+ for (size_t i = 0; i < in.size(); ++i) {
+ out->push_back(in[i]);
+ }
+}
+
+void WriteUShort(std::vector<uint8_t>* out, int value) {
+ out->push_back(value >> 8);
+ out->push_back(value & 255);
+}
+
+void WriteLong(std::vector<uint8_t>* out, int value) {
+ out->push_back((value >> 24) & 255);
+ out->push_back((value >> 16) & 255);
+ out->push_back((value >> 8) & 255);
+ out->push_back(value & 255);
+}
+
+// Glyf table preprocessing, based on
+// GlyfEncoder.java
+class GlyfEncoder {
+ public:
+ explicit GlyfEncoder(int num_glyphs)
+ : n_glyphs_(num_glyphs) {
+ bbox_bitmap_.resize(((num_glyphs + 31) >> 5) << 2);
+ }
+
+ bool Encode(int glyph_id, const Glyph& glyph) {
+ if (glyph.composite_data_size > 0) {
+ WriteCompositeGlyph(glyph_id, glyph);
+ } else if (glyph.contours.size() > 0) {
+ WriteSimpleGlyph(glyph_id, glyph);
+ } else {
+ WriteUShort(&n_contour_stream_, 0);
+ }
+ return true;
+ }
+
+ void GetTransformedGlyfBytes(std::vector<uint8_t>* result) {
+ WriteLong(result, 0); // version
+ WriteUShort(result, n_glyphs_);
+ WriteUShort(result, 0); // index_format, will be set later
+ WriteLong(result, n_contour_stream_.size());
+ WriteLong(result, n_points_stream_.size());
+ WriteLong(result, flag_byte_stream_.size());
+ WriteLong(result, glyph_stream_.size());
+ WriteLong(result, composite_stream_.size());
+ WriteLong(result, bbox_bitmap_.size() + bbox_stream_.size());
+ WriteLong(result, instruction_stream_.size());
+ WriteBytes(result, n_contour_stream_);
+ WriteBytes(result, n_points_stream_);
+ WriteBytes(result, flag_byte_stream_);
+ WriteBytes(result, glyph_stream_);
+ WriteBytes(result, composite_stream_);
+ WriteBytes(result, bbox_bitmap_);
+ WriteBytes(result, bbox_stream_);
+ WriteBytes(result, instruction_stream_);
+ }
+
+ private:
+ void WriteInstructions(const Glyph& glyph) {
+ Write255UShort(&glyph_stream_, glyph.instructions_size);
+ WriteBytes(&instruction_stream_,
+ glyph.instructions_data, glyph.instructions_size);
+ }
+
+ bool ShouldWriteSimpleGlyphBbox(const Glyph& glyph) {
+ if (glyph.contours.empty() || glyph.contours[0].empty()) {
+ return glyph.x_min || glyph.y_min || glyph.x_max || glyph.y_max;
+ }
+
+ int16_t x_min = glyph.contours[0][0].x;
+ int16_t y_min = glyph.contours[0][0].y;
+ int16_t x_max = x_min;
+ int16_t y_max = y_min;
+ for (const auto& contour : glyph.contours) {
+ for (const auto& point : contour) {
+ if (point.x < x_min) x_min = point.x;
+ if (point.x > x_max) x_max = point.x;
+ if (point.y < y_min) y_min = point.y;
+ if (point.y > y_max) y_max = point.y;
+ }
+ }
+
+ if (glyph.x_min != x_min)
+ return true;
+ if (glyph.y_min != y_min)
+ return true;
+ if (glyph.x_max != x_max)
+ return true;
+ if (glyph.y_max != y_max)
+ return true;
+
+ return false;
+ }
+
+ void WriteSimpleGlyph(int glyph_id, const Glyph& glyph) {
+ int num_contours = glyph.contours.size();
+ WriteUShort(&n_contour_stream_, num_contours);
+ if (ShouldWriteSimpleGlyphBbox(glyph)) {
+ WriteBbox(glyph_id, glyph);
+ }
+ for (int i = 0; i < num_contours; i++) {
+ Write255UShort(&n_points_stream_, glyph.contours[i].size());
+ }
+ int lastX = 0;
+ int lastY = 0;
+ for (int i = 0; i < num_contours; i++) {
+ int num_points = glyph.contours[i].size();
+ for (int j = 0; j < num_points; j++) {
+ int x = glyph.contours[i][j].x;
+ int y = glyph.contours[i][j].y;
+ int dx = x - lastX;
+ int dy = y - lastY;
+ WriteTriplet(glyph.contours[i][j].on_curve, dx, dy);
+ lastX = x;
+ lastY = y;
+ }
+ }
+ if (num_contours > 0) {
+ WriteInstructions(glyph);
+ }
+ }
+
+ void WriteCompositeGlyph(int glyph_id, const Glyph& glyph) {
+ WriteUShort(&n_contour_stream_, -1);
+ WriteBbox(glyph_id, glyph);
+ WriteBytes(&composite_stream_,
+ glyph.composite_data,
+ glyph.composite_data_size);
+ if (glyph.have_instructions) {
+ WriteInstructions(glyph);
+ }
+ }
+
+ void WriteBbox(int glyph_id, const Glyph& glyph) {
+ bbox_bitmap_[glyph_id >> 3] |= 0x80 >> (glyph_id & 7);
+ WriteUShort(&bbox_stream_, glyph.x_min);
+ WriteUShort(&bbox_stream_, glyph.y_min);
+ WriteUShort(&bbox_stream_, glyph.x_max);
+ WriteUShort(&bbox_stream_, glyph.y_max);
+ }
+
+ void WriteTriplet(bool on_curve, int x, int y) {
+ int abs_x = std::abs(x);
+ int abs_y = std::abs(y);
+ int on_curve_bit = on_curve ? 0 : 128;
+ int x_sign_bit = (x < 0) ? 0 : 1;
+ int y_sign_bit = (y < 0) ? 0 : 1;
+ int xy_sign_bits = x_sign_bit + 2 * y_sign_bit;
+ if (x == 0 && abs_y < 1280) {
+ flag_byte_stream_.push_back(on_curve_bit +
+ ((abs_y & 0xf00) >> 7) + y_sign_bit);
+ glyph_stream_.push_back(abs_y & 0xff);
+ } else if (y == 0 && abs_x < 1280) {
+ flag_byte_stream_.push_back(on_curve_bit + 10 +
+ ((abs_x & 0xf00) >> 7) + x_sign_bit);
+ glyph_stream_.push_back(abs_x & 0xff);
+ } else if (abs_x < 65 && abs_y < 65) {
+ flag_byte_stream_.push_back(on_curve_bit + 20 +
+ ((abs_x - 1) & 0x30) +
+ (((abs_y - 1) & 0x30) >> 2) +
+ xy_sign_bits);
+ glyph_stream_.push_back((((abs_x - 1) & 0xf) << 4) | ((abs_y - 1) & 0xf));
+ } else if (abs_x < 769 && abs_y < 769) {
+ flag_byte_stream_.push_back(on_curve_bit + 84 +
+ 12 * (((abs_x - 1) & 0x300) >> 8) +
+ (((abs_y - 1) & 0x300) >> 6) + xy_sign_bits);
+ glyph_stream_.push_back((abs_x - 1) & 0xff);
+ glyph_stream_.push_back((abs_y - 1) & 0xff);
+ } else if (abs_x < 4096 && abs_y < 4096) {
+ flag_byte_stream_.push_back(on_curve_bit + 120 + xy_sign_bits);
+ glyph_stream_.push_back(abs_x >> 4);
+ glyph_stream_.push_back(((abs_x & 0xf) << 4) | (abs_y >> 8));
+ glyph_stream_.push_back(abs_y & 0xff);
+ } else {
+ flag_byte_stream_.push_back(on_curve_bit + 124 + xy_sign_bits);
+ glyph_stream_.push_back(abs_x >> 8);
+ glyph_stream_.push_back(abs_x & 0xff);
+ glyph_stream_.push_back(abs_y >> 8);
+ glyph_stream_.push_back(abs_y & 0xff);
+ }
+ }
+
+ std::vector<uint8_t> n_contour_stream_;
+ std::vector<uint8_t> n_points_stream_;
+ std::vector<uint8_t> flag_byte_stream_;
+ std::vector<uint8_t> composite_stream_;
+ std::vector<uint8_t> bbox_bitmap_;
+ std::vector<uint8_t> bbox_stream_;
+ std::vector<uint8_t> glyph_stream_;
+ std::vector<uint8_t> instruction_stream_;
+ int n_glyphs_;
+};
+
+} // namespace
+
+bool TransformGlyfAndLocaTables(Font* font) {
+ // no transform for CFF
+ const Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ const Font::Table* loca_table = font->FindTable(kLocaTableTag);
+
+ // If you don't have glyf/loca this transform isn't very interesting
+ if (loca_table == NULL && glyf_table == NULL) {
+ return true;
+ }
+ // It would be best if you didn't have just one of glyf/loca
+ if ((glyf_table == NULL) != (loca_table == NULL)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Must share neither or both loca & glyf
+ if (loca_table->IsReused() != glyf_table->IsReused()) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (loca_table->IsReused()) {
+ return true;
+ }
+
+ Font::Table* transformed_glyf = &font->tables[kGlyfTableTag ^ 0x80808080];
+ Font::Table* transformed_loca = &font->tables[kLocaTableTag ^ 0x80808080];
+
+ int num_glyphs = NumGlyphs(*font);
+ GlyfEncoder encoder(num_glyphs);
+ for (int i = 0; i < num_glyphs; ++i) {
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ encoder.Encode(i, glyph);
+ }
+ encoder.GetTransformedGlyfBytes(&transformed_glyf->buffer);
+
+ const Font::Table* head_table = font->FindTable(kHeadTableTag);
+ if (head_table == NULL || head_table->length < 52) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ transformed_glyf->buffer[7] = head_table->data[51]; // index_format
+
+ transformed_glyf->tag = kGlyfTableTag ^ 0x80808080;
+ transformed_glyf->length = transformed_glyf->buffer.size();
+ transformed_glyf->data = transformed_glyf->buffer.data();
+
+ transformed_loca->tag = kLocaTableTag ^ 0x80808080;
+ transformed_loca->length = 0;
+ transformed_loca->data = NULL;
+
+ return true;
+}
+
+// See https://www.microsoft.com/typography/otspec/hmtx.htm
+// See WOFF2 spec, 5.4. Transformed hmtx table format
+bool TransformHmtxTable(Font* font) {
+ const Font::Table* glyf_table = font->FindTable(kGlyfTableTag);
+ const Font::Table* hmtx_table = font->FindTable(kHmtxTableTag);
+ const Font::Table* hhea_table = font->FindTable(kHheaTableTag);
+
+ // If you don't have hmtx or a glyf not much is going to happen here
+ if (hmtx_table == NULL || glyf_table == NULL) {
+ return true;
+ }
+
+ // hmtx without hhea doesn't make sense
+ if (hhea_table == NULL) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Skip 34 to reach 'hhea' numberOfHMetrics
+ Buffer hhea_buf(hhea_table->data, hhea_table->length);
+ uint16_t num_hmetrics;
+ if (!hhea_buf.Skip(34) || !hhea_buf.ReadU16(&num_hmetrics)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ // Must have at least one hMetric
+ if (num_hmetrics < 1) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ int num_glyphs = NumGlyphs(*font);
+
+ // Most fonts can be transformed; assume it's a go until proven otherwise
+ std::vector<uint16_t> advance_widths;
+ std::vector<int16_t> proportional_lsbs;
+ std::vector<int16_t> monospace_lsbs;
+
+ bool remove_proportional_lsb = true;
+ bool remove_monospace_lsb = (num_glyphs - num_hmetrics) > 0;
+
+ Buffer hmtx_buf(hmtx_table->data, hmtx_table->length);
+ for (int i = 0; i < num_glyphs; i++) {
+ Glyph glyph;
+ const uint8_t* glyph_data;
+ size_t glyph_size;
+ if (!GetGlyphData(*font, i, &glyph_data, &glyph_size) ||
+ (glyph_size > 0 && !ReadGlyph(glyph_data, glyph_size, &glyph))) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ uint16_t advance_width = 0;
+ int16_t lsb = 0;
+
+ if (i < num_hmetrics) {
+ // [0, num_hmetrics) are proportional hMetrics
+ if (!hmtx_buf.ReadU16(&advance_width)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (!hmtx_buf.ReadS16(&lsb)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (glyph_size > 0 && glyph.x_min != lsb) {
+ remove_proportional_lsb = false;
+ }
+
+ advance_widths.push_back(advance_width);
+ proportional_lsbs.push_back(lsb);
+ } else {
+ // [num_hmetrics, num_glyphs) are monospace leftSideBearing's
+ if (!hmtx_buf.ReadS16(&lsb)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (glyph_size > 0 && glyph.x_min != lsb) {
+ remove_monospace_lsb = false;
+ }
+ monospace_lsbs.push_back(lsb);
+ }
+
+ // If we know we can't optimize, bail out completely
+ if (!remove_proportional_lsb && !remove_monospace_lsb) {
+ return true;
+ }
+ }
+
+ Font::Table* transformed_hmtx = &font->tables[kHmtxTableTag ^ 0x80808080];
+
+ uint8_t flags = 0;
+ size_t transformed_size = 1 + 2 * advance_widths.size();
+ if (remove_proportional_lsb) {
+ flags |= 1;
+ } else {
+ transformed_size += 2 * proportional_lsbs.size();
+ }
+ if (remove_monospace_lsb) {
+ flags |= 1 << 1;
+ } else {
+ transformed_size += 2 * monospace_lsbs.size();
+ }
+
+ transformed_hmtx->buffer.reserve(transformed_size);
+ std::vector<uint8_t>* out = &transformed_hmtx->buffer;
+ WriteBytes(out, &flags, 1);
+ for (uint16_t advance_width : advance_widths) {
+ WriteUShort(out, advance_width);
+ }
+
+ if (!remove_proportional_lsb) {
+ for (int16_t lsb : proportional_lsbs) {
+ WriteUShort(out, lsb);
+ }
+ }
+ if (!remove_monospace_lsb) {
+ for (int16_t lsb : monospace_lsbs) {
+ WriteUShort(out, lsb);
+ }
+ }
+
+ transformed_hmtx->tag = kHmtxTableTag ^ 0x80808080;
+ transformed_hmtx->flag_byte = 1 << 6;
+ transformed_hmtx->length = transformed_hmtx->buffer.size();
+ transformed_hmtx->data = transformed_hmtx->buffer.data();
+
+
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.h
new file mode 100644
index 00000000000..e9d1b0d3dc4
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/transform.h
@@ -0,0 +1,34 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Library for preprocessing fonts as part of the WOFF 2.0 conversion.
+
+#ifndef WOFF2_TRANSFORM_H_
+#define WOFF2_TRANSFORM_H_
+
+#include "./font.h"
+
+namespace woff2 {
+
+// Adds the transformed versions of the glyf and loca tables to the font. The
+// transformed loca table has zero length. The tag of the transformed tables is
+// derived from the original tag by flipping the MSBs of every byte.
+bool TransformGlyfAndLocaTables(Font* font);
+
+// Apply transformation to hmtx table if applicable for this font.
+bool TransformHmtxTable(Font* font);
+
+} // namespace woff2
+
+#endif // WOFF2_TRANSFORM_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.cc
new file mode 100644
index 00000000000..944a17f2e28
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.cc
@@ -0,0 +1,137 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper functions for woff2 variable length types: 255UInt16 and UIntBase128
+
+#include "./variable_length.h"
+
+namespace woff2 {
+
+size_t Size255UShort(uint16_t value) {
+ size_t result = 3;
+ if (value < 253) {
+ result = 1;
+ } else if (value < 762) {
+ result = 2;
+ } else {
+ result = 3;
+ }
+ return result;
+}
+
+void Write255UShort(std::vector<uint8_t>* out, int value) {
+ if (value < 253) {
+ out->push_back(value);
+ } else if (value < 506) {
+ out->push_back(255);
+ out->push_back(value - 253);
+ } else if (value < 762) {
+ out->push_back(254);
+ out->push_back(value - 506);
+ } else {
+ out->push_back(253);
+ out->push_back(value >> 8);
+ out->push_back(value & 0xff);
+ }
+}
+
+void Store255UShort(int val, size_t* offset, uint8_t* dst) {
+ std::vector<uint8_t> packed;
+ Write255UShort(&packed, val);
+ for (uint8_t val : packed) {
+ dst[(*offset)++] = val;
+ }
+}
+
+// Based on section 6.1.1 of MicroType Express draft spec
+bool Read255UShort(Buffer* buf, unsigned int* value) {
+ static const int kWordCode = 253;
+ static const int kOneMoreByteCode2 = 254;
+ static const int kOneMoreByteCode1 = 255;
+ static const int kLowestUCode = 253;
+ uint8_t code = 0;
+ if (!buf->ReadU8(&code)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ if (code == kWordCode) {
+ uint16_t result = 0;
+ if (!buf->ReadU16(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result;
+ return true;
+ } else if (code == kOneMoreByteCode1) {
+ uint8_t result = 0;
+ if (!buf->ReadU8(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result + kLowestUCode;
+ return true;
+ } else if (code == kOneMoreByteCode2) {
+ uint8_t result = 0;
+ if (!buf->ReadU8(&result)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *value = result + kLowestUCode * 2;
+ return true;
+ } else {
+ *value = code;
+ return true;
+ }
+}
+
+bool ReadBase128(Buffer* buf, uint32_t* value) {
+ uint32_t result = 0;
+ for (size_t i = 0; i < 5; ++i) {
+ uint8_t code = 0;
+ if (!buf->ReadU8(&code)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // Leading zeros are invalid.
+ if (i == 0 && code == 0x80) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ // If any of the top seven bits are set then we're about to overflow.
+ if (result & 0xfe000000) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+ result = (result << 7) | (code & 0x7f);
+ if ((code & 0x80) == 0) {
+ *value = result;
+ return true;
+ }
+ }
+ // Make sure not to exceed the size bound
+ return FONT_COMPRESSION_FAILURE();
+}
+
+size_t Base128Size(size_t n) {
+ size_t size = 1;
+ for (; n >= 128; n >>= 7) ++size;
+ return size;
+}
+
+void StoreBase128(size_t len, size_t* offset, uint8_t* dst) {
+ size_t size = Base128Size(len);
+ for (size_t i = 0; i < size; ++i) {
+ int b = static_cast<int>((len >> (7 * (size - i - 1))) & 0x7f);
+ if (i < size - 1) {
+ b |= 0x80;
+ }
+ dst[(*offset)++] = b;
+ }
+}
+
+} // namespace woff2
+
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.h
new file mode 100644
index 00000000000..2816ae23a20
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/variable_length.h
@@ -0,0 +1,38 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper functions for woff2 variable length types: 255UInt16 and UIntBase128
+
+#ifndef WOFF2_VARIABLE_LENGTH_H_
+#define WOFF2_VARIABLE_LENGTH_H_
+
+#include <inttypes.h>
+#include <vector>
+#include "./buffer.h"
+
+namespace woff2 {
+
+size_t Size255UShort(uint16_t value);
+bool Read255UShort(Buffer* buf, unsigned int* value);
+void Write255UShort(std::vector<uint8_t>* out, int value);
+void Store255UShort(int val, size_t* offset, uint8_t* dst);
+
+size_t Base128Size(size_t n);
+bool ReadBase128(Buffer* buf, uint32_t* value);
+void StoreBase128(size_t len, size_t* offset, uint8_t* dst);
+
+} // namespace woff2
+
+#endif // WOFF2_VARIABLE_LENGTH_H_
+
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.cc
new file mode 100644
index 00000000000..eba6a46e213
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.cc
@@ -0,0 +1,64 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helpers common across multiple parts of woff2
+
+#include <algorithm>
+
+#include "./woff2_common.h"
+
+namespace woff2 {
+
+
+uint32_t ComputeULongSum(const uint8_t* buf, size_t size) {
+ uint32_t checksum = 0;
+ size_t aligned_size = size & ~3;
+ for (size_t i = 0; i < aligned_size; i += 4) {
+#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
+ uint32_t v = *reinterpret_cast<const uint32_t*>(buf + i);
+ checksum += (((v & 0xFF) << 24) | ((v & 0xFF00) << 8) |
+ ((v & 0xFF0000) >> 8) | ((v & 0xFF000000) >> 24));
+#elif (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
+ checksum += *reinterpret_cast<const uint32_t*>(buf + i);
+#else
+ checksum += (buf[i] << 24) | (buf[i + 1] << 16) |
+ (buf[i + 2] << 8) | buf[i + 3];
+#endif
+ }
+
+ // treat size not aligned on 4 as if it were padded to 4 with 0's
+ if (size != aligned_size) {
+ uint32_t v = 0;
+ for (size_t i = aligned_size; i < size; ++i) {
+ v |= buf[i] << (24 - 8 * (i & 3));
+ }
+ checksum += v;
+ }
+
+ return checksum;
+}
+
+size_t CollectionHeaderSize(uint32_t header_version, uint32_t num_fonts) {
+ size_t size = 0;
+ if (header_version == 0x00020000) {
+ size += 12; // ulDsig{Tag,Length,Offset}
+ }
+ if (header_version == 0x00010000 || header_version == 0x00020000) {
+ size += 12 // TTCTag, Version, numFonts
+ + 4 * num_fonts; // OffsetTable[numFonts]
+ }
+ return size;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.h
new file mode 100644
index 00000000000..a8c45af80e1
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_common.h
@@ -0,0 +1,72 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Common definition for WOFF2 encoding/decoding
+
+#ifndef WOFF2_WOFF2_COMMON_H_
+#define WOFF2_WOFF2_COMMON_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+
+#include <string>
+
+namespace woff2 {
+
+static const uint32_t kWoff2Signature = 0x774f4632; // "wOF2"
+
+// Leave the first byte open to store flag_byte
+const unsigned int kWoff2FlagsTransform = 1 << 8;
+
+// TrueType Collection ID string: 'ttcf'
+static const uint32_t kTtcFontFlavor = 0x74746366;
+
+static const size_t kSfntHeaderSize = 12;
+static const size_t kSfntEntrySize = 16;
+
+struct Point {
+ int x;
+ int y;
+ bool on_curve;
+};
+
+struct Table {
+ uint32_t tag;
+ uint32_t flags;
+ uint32_t src_offset;
+ uint32_t src_length;
+
+ uint32_t transform_length;
+
+ uint32_t dst_offset;
+ uint32_t dst_length;
+ const uint8_t* dst_data;
+
+ bool operator<(const Table& other) const {
+ return tag < other.tag;
+ }
+};
+
+
+// Size of the collection header. 0 if version indicates this isn't a
+// collection. Ref http://www.microsoft.com/typography/otspec/otff.htm,
+// True Type Collections
+size_t CollectionHeaderSize(uint32_t header_version, uint32_t num_fonts);
+
+// Compute checksum over size bytes of buf
+uint32_t ComputeULongSum(const uint8_t* buf, size_t size);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_COMMON_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_dec.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_dec.h
new file mode 100644
index 00000000000..98fec074d02
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_dec.h
@@ -0,0 +1,42 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Library for converting WOFF2 format font files to their TTF versions.
+
+#ifndef WOFF2_WOFF2_DEC_H_
+#define WOFF2_WOFF2_DEC_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include "./woff2_out.h"
+
+namespace woff2 {
+
+// Compute the size of the final uncompressed font, or 0 on error.
+size_t ComputeWOFF2FinalSize(const uint8_t *data, size_t length);
+
+// Decompresses the font into the target buffer. The result_length should
+// be the same as determined by ComputeFinalSize(). Returns true on successful
+// decompression.
+bool ConvertWOFF2ToTTF(uint8_t *result, size_t result_length,
+ const uint8_t *data, size_t length);
+
+// Decompresses the font into out. Returns true on success.
+// Works even if WOFF2Header totalSfntSize is wrong.
+bool ConvertWOFF2ToTTF(const uint8_t *data, size_t length,
+ WOFF2Out* out);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_DEC_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.cc
new file mode 100644
index 00000000000..d100ad51b73
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.cc
@@ -0,0 +1,471 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Library for converting TTF format font files to their WOFF2 versions.
+
+#include "./woff2_enc.h"
+
+#include <stdlib.h>
+#include <complex>
+#include <cstring>
+#include <limits>
+#include <string>
+#include <vector>
+
+#include "./compressor.h"
+#include "./buffer.h"
+#include "./font.h"
+#include "./normalize.h"
+#include "./round.h"
+#include "./store_bytes.h"
+#include "./table_tags.h"
+#include "./transform.h"
+#include "./variable_length.h"
+#include "./woff2_common.h"
+
+
+namespace woff2 {
+
+namespace {
+
+
+using std::string;
+using std::vector;
+
+
+const size_t kWoff2HeaderSize = 48;
+const size_t kWoff2EntrySize = 20;
+
+
+bool Compress(const uint8_t* data, const size_t len,
+ uint8_t* result, uint32_t* result_len,
+ brotli::BrotliParams::Mode mode, int quality) {
+ size_t compressed_len = *result_len;
+ brotli::BrotliParams params;
+ params.mode = mode;
+ params.quality = quality;
+ if (brotli::BrotliCompressBuffer(params, len, data, &compressed_len, result)
+ == 0) {
+ return false;
+ }
+ *result_len = compressed_len;
+ return true;
+}
+
+bool Woff2Compress(const uint8_t* data, const size_t len,
+ uint8_t* result, uint32_t* result_len,
+ int quality) {
+ return Compress(data, len, result, result_len,
+ brotli::BrotliParams::MODE_FONT, quality);
+}
+
+bool TextCompress(const uint8_t* data, const size_t len,
+ uint8_t* result, uint32_t* result_len,
+ int quality) {
+ return Compress(data, len, result, result_len,
+ brotli::BrotliParams::MODE_TEXT, quality);
+}
+
+int KnownTableIndex(uint32_t tag) {
+ for (int i = 0; i < 63; ++i) {
+ if (tag == kKnownTags[i]) return i;
+ }
+ return 63;
+}
+
+void StoreTableEntry(const Table& table, size_t* offset, uint8_t* dst) {
+ uint8_t flag_byte = (table.flags & 0xC0) | KnownTableIndex(table.tag);
+ dst[(*offset)++] = flag_byte;
+ // The index here is treated as a set of flag bytes because
+ // bits 6 and 7 of the byte are reserved for future use as flags.
+ // 0x3f or 63 means an arbitrary table tag.
+ if ((flag_byte & 0x3f) == 0x3f) {
+ StoreU32(table.tag, offset, dst);
+ }
+ StoreBase128(table.src_length, offset, dst);
+ if ((table.flags & kWoff2FlagsTransform) != 0) {
+ StoreBase128(table.transform_length, offset, dst);
+ }
+}
+
+size_t TableEntrySize(const Table& table) {
+ uint8_t flag_byte = KnownTableIndex(table.tag);
+ size_t size = ((flag_byte & 0x3f) != 0x3f) ? 1 : 5;
+ size += Base128Size(table.src_length);
+ if ((table.flags & kWoff2FlagsTransform) != 0) {
+ size += Base128Size(table.transform_length);
+ }
+ return size;
+}
+
+size_t ComputeWoff2Length(const FontCollection& font_collection,
+ const std::vector<Table>& tables,
+ std::map<uint32_t, uint16_t> index_by_offset,
+ size_t compressed_data_length,
+ size_t extended_metadata_length) {
+ size_t size = kWoff2HeaderSize;
+
+ for (const auto& table : tables) {
+ size += TableEntrySize(table);
+ }
+
+ // for collections only, collection tables
+ if (font_collection.flavor == kTtcFontFlavor) {
+ size += 4; // UInt32 Version of TTC Header
+ size += Size255UShort(font_collection.fonts.size()); // 255UInt16 numFonts
+
+ size += 4 * font_collection.fonts.size(); // UInt32 flavor for each
+
+ for (const auto& font : font_collection.fonts) {
+ size += Size255UShort(font.tables.size()); // 255UInt16 numTables
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ // no collection entry for xform table
+ if (table.tag & 0x80808080) continue;
+
+ uint16_t table_index = index_by_offset[table.offset];
+ size += Size255UShort(table_index); // 255UInt16 index entry
+ }
+ }
+ }
+
+ // compressed data
+ size += compressed_data_length;
+ size = Round4(size);
+
+ size += extended_metadata_length;
+ return size;
+}
+
+size_t ComputeUncompressedLength(const Font& font) {
+ // sfnt header + offset table
+ size_t size = 12 + 16 * font.num_tables;
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // xform tables don't stay
+ if (table.IsReused()) continue; // don't have to pay twice
+ size += Round4(table.length);
+ }
+ return size;
+}
+
+size_t ComputeUncompressedLength(const FontCollection& font_collection) {
+ if (font_collection.flavor != kTtcFontFlavor) {
+ return ComputeUncompressedLength(font_collection.fonts[0]);
+ }
+ size_t size = CollectionHeaderSize(font_collection.header_version,
+ font_collection.fonts.size());
+ for (const auto& font : font_collection.fonts) {
+ size += ComputeUncompressedLength(font);
+ }
+ return size;
+}
+
+size_t ComputeTotalTransformLength(const Font& font) {
+ size_t total = 0;
+ for (const auto& i : font.tables) {
+ const Font::Table& table = i.second;
+ if (table.IsReused()) {
+ continue;
+ }
+ if (table.tag & 0x80808080 || !font.FindTable(table.tag ^ 0x80808080)) {
+ // Count transformed tables and non-transformed tables that do not have
+ // transformed versions.
+ total += table.length;
+ }
+ }
+ return total;
+}
+
+} // namespace
+
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length) {
+ return MaxWOFF2CompressedSize(data, length, "");
+}
+
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length,
+ const string& extended_metadata) {
+ // Except for the header size, which is 32 bytes larger in woff2 format,
+ // all other parts should be smaller (table header in short format,
+ // transformations and compression). Just to be sure, we will give some
+ // headroom anyway.
+ return length + 1024 + extended_metadata.length();
+}
+
+uint32_t CompressedBufferSize(uint32_t original_size) {
+ return 1.2 * original_size + 10240;
+}
+
+bool TransformFontCollection(FontCollection* font_collection) {
+ for (auto& font : font_collection->fonts) {
+ if (!TransformGlyfAndLocaTables(&font)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "glyf/loca transformation failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ }
+
+ return true;
+}
+
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length) {
+ WOFF2Params params;
+ return ConvertTTFToWOFF2(data, length, result, result_length,
+ params);
+}
+
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length,
+ const WOFF2Params& params) {
+ FontCollection font_collection;
+ if (!ReadFontCollection(data, length, &font_collection)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Parsing of the input font failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (!NormalizeFontCollection(&font_collection)) {
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+ if (params.allow_transforms && !TransformFontCollection(&font_collection)) {
+ return FONT_COMPRESSION_FAILURE();
+ } else {
+ // glyf/loca use 11 to flag "not transformed"
+ for (auto& font : font_collection.fonts) {
+ Font::Table* glyf_table = font.FindTable(kGlyfTableTag);
+ Font::Table* loca_table = font.FindTable(kLocaTableTag);
+ if (glyf_table) {
+ glyf_table->flag_byte |= 0xc0;
+ }
+ if (loca_table) {
+ loca_table->flag_byte |= 0xc0;
+ }
+ }
+ }
+
+ // Although the compressed size of each table in the final woff2 file won't
+ // be larger than its transform_length, we have to allocate a large enough
+ // buffer for the compressor, since the compressor can potentially increase
+ // the size. If the compressor overflows this, it should return false and
+ // then this function will also return false.
+
+ size_t total_transform_length = 0;
+ for (const auto& font : font_collection.fonts) {
+ total_transform_length += ComputeTotalTransformLength(font);
+ }
+ size_t compression_buffer_size = CompressedBufferSize(total_transform_length);
+ std::vector<uint8_t> compression_buf(compression_buffer_size);
+ uint32_t total_compressed_length = compression_buffer_size;
+
+ // Collect all transformed data into one place in output order.
+ std::vector<uint8_t> transform_buf(total_transform_length);
+ size_t transform_offset = 0;
+ for (const auto& font : font_collection.fonts) {
+ for (const auto tag : font.OutputOrderedTags()) {
+ const Font::Table& original = font.tables.at(tag);
+ if (original.IsReused()) continue;
+ if (tag & 0x80808080) continue;
+ const Font::Table* table_to_store = font.FindTable(tag ^ 0x80808080);
+ if (table_to_store == NULL) table_to_store = &original;
+
+ StoreBytes(table_to_store->data, table_to_store->length,
+ &transform_offset, &transform_buf[0]);
+ }
+ }
+
+ // Compress all transformed data in one stream.
+ if (!Woff2Compress(transform_buf.data(), total_transform_length,
+ &compression_buf[0],
+ &total_compressed_length,
+ params.brotli_quality)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compression of combined table failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compressed %zu to %u.\n", total_transform_length,
+ total_compressed_length);
+#endif
+
+ // Compress the extended metadata
+ // TODO(user): how does this apply to collections
+ uint32_t compressed_metadata_buf_length =
+ CompressedBufferSize(params.extended_metadata.length());
+ std::vector<uint8_t> compressed_metadata_buf(compressed_metadata_buf_length);
+
+ if (params.extended_metadata.length() > 0) {
+ if (!TextCompress((const uint8_t*)params.extended_metadata.data(),
+ params.extended_metadata.length(),
+ compressed_metadata_buf.data(),
+ &compressed_metadata_buf_length,
+ params.brotli_quality)) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Compression of extended metadata failed.\n");
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ } else {
+ compressed_metadata_buf_length = 0;
+ }
+
+ std::vector<Table> tables;
+ std::map<uint32_t, uint16_t> index_by_offset;
+
+ for (const auto& font : font_collection.fonts) {
+
+ for (const auto tag : font.OutputOrderedTags()) {
+ const Font::Table& src_table = font.tables.at(tag);
+ if (src_table.IsReused()) {
+ continue;
+ }
+
+ if (index_by_offset.find(src_table.offset) == index_by_offset.end()) {
+ index_by_offset[src_table.offset] = tables.size();
+ } else {
+ return false;
+ }
+
+ Table table;
+ table.tag = src_table.tag;
+ table.flags = src_table.flag_byte;
+ table.src_length = src_table.length;
+ table.transform_length = src_table.length;
+ const uint8_t* transformed_data = src_table.data;
+ const Font::Table* transformed_table =
+ font.FindTable(src_table.tag ^ 0x80808080);
+ if (transformed_table != NULL) {
+ table.flags = transformed_table->flag_byte;
+ table.flags |= kWoff2FlagsTransform;
+ table.transform_length = transformed_table->length;
+ transformed_data = transformed_table->data;
+
+ }
+ tables.push_back(table);
+ }
+ }
+
+ size_t woff2_length = ComputeWoff2Length(font_collection, tables,
+ index_by_offset, total_compressed_length, compressed_metadata_buf_length);
+ if (woff2_length > *result_length) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Result allocation was too small (%zd vs %zd bytes).\n",
+ *result_length, woff2_length);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ *result_length = woff2_length;
+
+ size_t offset = 0;
+
+ // start of woff2 header (http://www.w3.org/TR/WOFF2/#woff20Header)
+ StoreU32(kWoff2Signature, &offset, result);
+ if (font_collection.flavor != kTtcFontFlavor) {
+ StoreU32(font_collection.fonts[0].flavor, &offset, result);
+ } else {
+ StoreU32(kTtcFontFlavor, &offset, result);
+ }
+ StoreU32(woff2_length, &offset, result);
+ Store16(tables.size(), &offset, result);
+ Store16(0, &offset, result); // reserved
+ // totalSfntSize
+ StoreU32(ComputeUncompressedLength(font_collection), &offset, result);
+ StoreU32(total_compressed_length, &offset, result); // totalCompressedSize
+
+ // Let's just all be v1.0
+ Store16(1, &offset, result); // majorVersion
+ Store16(0, &offset, result); // minorVersion
+ if (compressed_metadata_buf_length > 0) {
+ StoreU32(woff2_length - compressed_metadata_buf_length,
+ &offset, result); // metaOffset
+ StoreU32(compressed_metadata_buf_length, &offset, result); // metaLength
+ StoreU32(params.extended_metadata.length(),
+ &offset, result); // metaOrigLength
+ } else {
+ StoreU32(0, &offset, result); // metaOffset
+ StoreU32(0, &offset, result); // metaLength
+ StoreU32(0, &offset, result); // metaOrigLength
+ }
+ StoreU32(0, &offset, result); // privOffset
+ StoreU32(0, &offset, result); // privLength
+ // end of woff2 header
+
+ // table directory (http://www.w3.org/TR/WOFF2/#table_dir_format)
+ for (const auto& table : tables) {
+ StoreTableEntry(table, &offset, result);
+ }
+
+ // for collections only, collection table directory
+ if (font_collection.flavor == kTtcFontFlavor) {
+ StoreU32(font_collection.header_version, &offset, result);
+ Store255UShort(font_collection.fonts.size(), &offset, result);
+ for (const Font& font : font_collection.fonts) {
+
+ uint16_t num_tables = 0;
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // don't write xform tables
+ num_tables++;
+ }
+ Store255UShort(num_tables, &offset, result);
+
+ StoreU32(font.flavor, &offset, result);
+ for (const auto& entry : font.tables) {
+ const Font::Table& table = entry.second;
+ if (table.tag & 0x80808080) continue; // don't write xform tables
+
+ // for reused tables, only the original has an updated offset
+ uint32_t table_offset =
+ table.IsReused() ? table.reuse_of->offset : table.offset;
+ uint32_t table_length =
+ table.IsReused() ? table.reuse_of->length : table.length;
+ if (index_by_offset.find(table_offset) == index_by_offset.end()) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Missing table index for offset 0x%08x\n",
+ table_offset);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ uint16_t index = index_by_offset[table_offset];
+ Store255UShort(index, &offset, result);
+
+ }
+
+ }
+ }
+
+ // compressed data format (http://www.w3.org/TR/WOFF2/#table_format)
+
+ StoreBytes(&compression_buf[0], total_compressed_length, &offset, result);
+ offset = Round4(offset);
+
+ StoreBytes(compressed_metadata_buf.data(), compressed_metadata_buf_length,
+ &offset, result);
+
+ if (*result_length != offset) {
+#ifdef FONT_COMPRESSION_BIN
+ fprintf(stderr, "Mismatch between computed and actual length "
+ "(%zd vs %zd)\n", *result_length, offset);
+#endif
+ return FONT_COMPRESSION_FAILURE();
+ }
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.h
new file mode 100644
index 00000000000..3ac8c3ab1bd
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_enc.h
@@ -0,0 +1,54 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Library for converting WOFF2 format font files to their TTF versions.
+
+#ifndef WOFF2_WOFF2_ENC_H_
+#define WOFF2_WOFF2_ENC_H_
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <string>
+
+using std::string;
+
+
+namespace woff2 {
+
+struct WOFF2Params {
+ WOFF2Params() : extended_metadata(""), brotli_quality(11),
+ allow_transforms(true) {}
+
+ string extended_metadata;
+ int brotli_quality;
+ bool allow_transforms;
+};
+
+// Returns an upper bound on the size of the compressed file.
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length);
+size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length,
+ const string& extended_metadata);
+
+// Compresses the font into the target buffer. *result_length should be at least
+// the value returned by MaxWOFF2CompressedSize(), upon return, it is set to the
+// actual compressed size. Returns true on successful compression.
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length);
+bool ConvertTTFToWOFF2(const uint8_t *data, size_t length,
+ uint8_t *result, size_t *result_length,
+ const WOFF2Params& params);
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_ENC_H_
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.cc b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.cc
new file mode 100644
index 00000000000..8882306445b
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.cc
@@ -0,0 +1,73 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Output buffer for WOFF2 decompression.
+
+#include "./woff2_out.h"
+
+namespace woff2 {
+
+WOFF2StringOut::WOFF2StringOut(string* buf)
+ : buf_(buf),
+ max_size_(kDefaultMaxSize),
+ offset_(0) {}
+
+bool WOFF2StringOut::Write(const void *buf, size_t n) {
+ return Write(buf, offset_, n);
+}
+
+bool WOFF2StringOut::Write(const void *buf, size_t offset, size_t n) {
+ if (offset > max_size_ || n > max_size_ - offset) {
+ return false;
+ }
+ if (offset == buf_->size()) {
+ buf_->append(static_cast<const char*>(buf), n);
+ } else {
+ if (offset + n > buf_->size()) {
+ buf_->append(offset + n - buf_->size(), 0);
+ }
+ buf_->replace(offset, n, static_cast<const char*>(buf), n);
+ }
+ offset_ = std::max(offset_, offset + n);
+
+ return true;
+}
+
+void WOFF2StringOut::SetMaxSize(size_t max_size) {
+ max_size_ = max_size;
+ if (offset_ > max_size_) {
+ offset_ = max_size_;
+ }
+}
+
+WOFF2MemoryOut::WOFF2MemoryOut(uint8_t* buf, size_t buf_size)
+ : buf_(buf),
+ buf_size_(buf_size),
+ offset_(0) {}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t n) {
+ return Write(buf, offset_, n);
+}
+
+bool WOFF2MemoryOut::Write(const void *buf, size_t offset, size_t n) {
+ if (offset > buf_size_ || n > buf_size_ - offset) {
+ return false;
+ }
+ std::memcpy(buf_ + offset, buf, n);
+ offset_ = std::max(offset_, offset + n);
+
+ return true;
+}
+
+} // namespace woff2
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.h
new file mode 100644
index 00000000000..c956afa0e2a
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/libs/woff2/src/woff2_out.h
@@ -0,0 +1,114 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Output buffer for WOFF2 decompression.
+
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Output buffer for WOFF2 decompression.
+
+#ifndef WOFF2_WOFF2_OUT_H_
+#define WOFF2_WOFF2_OUT_H_
+
+#include <algorithm>
+#include <cstring>
+#include <memory>
+#include <string>
+#include "./port.h"
+
+namespace woff2 {
+
+// Suggested max size for output.
+const size_t kDefaultMaxSize = 30 * 1024 * 1024;
+
+using std::string;
+
+
+/**
+ * Output interface for the woff2 decoding.
+ *
+ * Writes to arbitrary offsets are supported to facilitate updating offset
+ * table and checksums after tables are ready. Reading the current size is
+ * supported so a 'loca' table can be built up while writing glyphs.
+ *
+ * By default limits size to kDefaultMaxSize.
+ */
+class WOFF2Out {
+ public:
+ virtual ~WOFF2Out(void) {}
+
+ // Append n bytes of data from buf.
+ // Return true if all written, false otherwise.
+ virtual bool Write(const void *buf, size_t n) = 0;
+
+ // Write n bytes of data from buf at offset.
+ // Return true if all written, false otherwise.
+ virtual bool Write(const void *buf, size_t offset, size_t n) = 0;
+
+ virtual size_t Size() = 0;
+};
+
+/**
+ * Expanding memory block for woff2 out. By default limited to kDefaultMaxSize.
+ */
+class WOFF2StringOut : public WOFF2Out {
+ public:
+ // Create a writer that writes its data to buf.
+ // buf->size() will grow to at most max_size
+ // buf may be sized (e.g. using EstimateWOFF2FinalSize) or empty.
+ explicit WOFF2StringOut(string* buf);
+
+ bool Write(const void *buf, size_t n) override;
+ bool Write(const void *buf, size_t offset, size_t n) override;
+ size_t Size() override { return offset_; }
+ size_t MaxSize() { return max_size_; }
+ void SetMaxSize(size_t max_size);
+ private:
+ string* buf_;
+ size_t max_size_;
+ size_t offset_;
+};
+
+/**
+ * Fixed memory block for woff2 out.
+ */
+class WOFF2MemoryOut : public WOFF2Out {
+ public:
+ // Create a writer that writes its data to buf.
+ WOFF2MemoryOut(uint8_t* buf, size_t buf_size);
+
+ bool Write(const void *buf, size_t n) override;
+ bool Write(const void *buf, size_t offset, size_t n) override;
+ size_t Size() override { return offset_; }
+ private:
+ uint8_t* buf_;
+ size_t buf_size_;
+ size_t offset_;
+};
+
+} // namespace woff2
+
+#endif // WOFF2_WOFF2_OUT_H_