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Unified Diff: third_party/ots/src/loca.cc

Issue 797183002: Revert of Updating OTS repo from https://github.com/khaledhosny/ots.git (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years ago
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Index: third_party/ots/src/loca.cc
diff --git a/third_party/ots/src/loca.cc b/third_party/ots/src/loca.cc
deleted file mode 100644
index 4b291f028c0848dacbaec63c68db5da5d11bcd40..0000000000000000000000000000000000000000
--- a/third_party/ots/src/loca.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "loca.h"
-
-#include "head.h"
-#include "maxp.h"
-
-// loca - Index to Location
-// http://www.microsoft.com/typography/otspec/loca.htm
-
-#define TABLE_NAME "loca"
-
-namespace ots {
-
-bool ots_loca_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
- Buffer table(data, length);
-
- // We can't do anything useful in validating this data except to ensure that
- // the values are monotonically increasing.
-
- OpenTypeLOCA *loca = new OpenTypeLOCA;
- file->loca = loca;
-
- if (!file->maxp || !file->head) {
- return OTS_FAILURE_MSG("maxp or head tables missing from font, needed by loca");
- }
-
- const unsigned num_glyphs = file->maxp->num_glyphs;
- unsigned last_offset = 0;
- loca->offsets.resize(num_glyphs + 1);
- // maxp->num_glyphs is uint16_t, thus the addition never overflows.
-
- if (file->head->index_to_loc_format == 0) {
- // Note that the <= here (and below) is correct. There is one more offset
- // than the number of glyphs in order to give the length of the final
- // glyph.
- for (unsigned i = 0; i <= num_glyphs; ++i) {
- uint16_t offset = 0;
- if (!table.ReadU16(&offset)) {
- return OTS_FAILURE_MSG("Failed to read offset for glyph %d", i);
- }
- if (offset < last_offset) {
- return OTS_FAILURE_MSG("Out of order offset %d < %d for glyph %d", offset, last_offset, i);
- }
- last_offset = offset;
- loca->offsets[i] = offset * 2;
- }
- } else {
- for (unsigned i = 0; i <= num_glyphs; ++i) {
- uint32_t offset = 0;
- if (!table.ReadU32(&offset)) {
- return OTS_FAILURE_MSG("Failed to read offset for glyph %d", i);
- }
- if (offset < last_offset) {
- return OTS_FAILURE_MSG("Out of order offset %d < %d for glyph %d", offset, last_offset, i);
- }
- last_offset = offset;
- loca->offsets[i] = offset;
- }
- }
-
- return true;
-}
-
-bool ots_loca_should_serialise(OpenTypeFile *file) {
- return file->loca != NULL;
-}
-
-bool ots_loca_serialise(OTSStream *out, OpenTypeFile *file) {
- const OpenTypeLOCA *loca = file->loca;
- const OpenTypeHEAD *head = file->head;
-
- if (!head) {
- return OTS_FAILURE_MSG("Missing head table in font needed by loca");
- }
-
- if (head->index_to_loc_format == 0) {
- for (unsigned i = 0; i < loca->offsets.size(); ++i) {
- const uint16_t offset = static_cast<uint16_t>(loca->offsets[i] >> 1);
- if ((offset != (loca->offsets[i] >> 1)) ||
- !out->WriteU16(offset)) {
- return OTS_FAILURE_MSG("Failed to write glyph offset for glyph %d", i);
- }
- }
- } else {
- for (unsigned i = 0; i < loca->offsets.size(); ++i) {
- if (!out->WriteU32(loca->offsets[i])) {
- return OTS_FAILURE_MSG("Failed to write glyph offset for glyph %d", i);
- }
- }
- }
-
- return true;
-}
-
-void ots_loca_free(OpenTypeFile *file) {
- delete file->loca;
-}
-
-} // namespace ots
-
-#undef TABLE_NAME
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