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// Copyright 2016 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 "testing/libfuzzer/fuzzers/skia_path_common.h"
#include "third_party/skia/include/core/SkPath.h"
// This is needed because SkPath::readFromMemory does not seem to be able to
// be able to handle arbitrary input.
void BuildPath(const uint8_t** data,
size_t* size,
SkPath* path,
int last_verb) {
uint8_t operation;
SkScalar a, b, c, d, e, f;
while (read<uint8_t>(data, size, &operation)) {
switch (operation % (last_verb + 1)) {
case SkPath::Verb::kMove_Verb:
if (!read<SkScalar>(data, size, &a) || !read<SkScalar>(data, size, &b))
return;
path->moveTo(a, b);
break;
case SkPath::Verb::kLine_Verb:
if (!read<SkScalar>(data, size, &a) || !read<SkScalar>(data, size, &b))
return;
path->lineTo(a, b);
break;
case SkPath::Verb::kQuad_Verb:
if (!read<SkScalar>(data, size, &a) ||
!read<SkScalar>(data, size, &b) ||
!read<SkScalar>(data, size, &c) ||
!read<SkScalar>(data, size, &d))
return;
path->quadTo(a, b, c, d);
break;
case SkPath::Verb::kConic_Verb:
if (!read<SkScalar>(data, size, &a) ||
!read<SkScalar>(data, size, &b) ||
!read<SkScalar>(data, size, &c) ||
!read<SkScalar>(data, size, &d) ||
!read<SkScalar>(data, size, &e))
return;
path->conicTo(a, b, c, d, e);
break;
case SkPath::Verb::kCubic_Verb:
if (!read<SkScalar>(data, size, &a) ||
!read<SkScalar>(data, size, &b) ||
!read<SkScalar>(data, size, &c) ||
!read<SkScalar>(data, size, &d) ||
!read<SkScalar>(data, size, &e) ||
!read<SkScalar>(data, size, &f))
return;
path->cubicTo(a, b, c, d, e, f);
break;
case SkPath::Verb::kClose_Verb:
path->close();
break;
case SkPath::Verb::kDone_Verb:
// In this case, simply exit.
return;
}
}
}
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