/*
 * Copyright (C) Research In Motion Limited 2010, 2012. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "third_party/blink/renderer/core/svg/svg_path_utilities.h"

#include "third_party/blink/renderer/core/svg/svg_path_builder.h"
#include "third_party/blink/renderer/core/svg/svg_path_byte_stream_builder.h"
#include "third_party/blink/renderer/core/svg/svg_path_byte_stream_source.h"
#include "third_party/blink/renderer/core/svg/svg_path_parser.h"
#include "third_party/blink/renderer/core/svg/svg_path_segments_builder.h"
#include "third_party/blink/renderer/core/svg/svg_path_segments_source.h"
#include "third_party/blink/renderer/core/svg/svg_path_string_builder.h"
#include "third_party/blink/renderer/core/svg/svg_path_string_source.h"
#include "third_party/blink/renderer/platform/geometry/path.h"
#include "third_party/blink/renderer/platform/geometry/path_types.h"

namespace blink {

Path BuildPathFromString(const StringView& path_string) {
  if (path_string.empty())
    return Path();

  SVGPathBuilder builder;
  SVGPathStringSource source(path_string);
  svg_path_parser::ParsePath(source, builder);

  return builder.Finalize();
}

Path BuildPathFromByteStream(const SVGPathByteStream& stream,
                             WindRule wind_rule) {
  if (stream.IsEmpty())
    return Path();

  SVGPathBuilder builder(wind_rule);
  SVGPathByteStreamSource source(stream);
  svg_path_parser::ParsePath(source, builder);

  return builder.Finalize();
}

String BuildStringFromByteStream(const SVGPathByteStream& stream,
                                 PathSerializationFormat format) {
  if (stream.IsEmpty())
    return String();

  SVGPathStringBuilder builder;
  SVGPathByteStreamSource source(stream);
  if (format == kTransformToAbsolute) {
    SVGPathAbsolutizer absolutizer(&builder);
    svg_path_parser::ParsePath(source, absolutizer);
  } else {
    svg_path_parser::ParsePath(source, builder);
  }
  return builder.Result();
}

SVGParsingError BuildByteStreamFromString(const StringView& path_string,
                                          SVGPathByteStreamBuilder& builder) {
  if (path_string.empty())
    return SVGParseStatus::kNoError;

  // The string length is typically a minor overestimate of eventual byte stream
  // size, so it avoids us a lot of reallocs.
  builder.ReserveInitialCapacity(path_string.length());

  SVGPathStringSource source(path_string);
  svg_path_parser::ParsePath(source, builder);
  return source.ParseError();
}

HeapVector<Member<SVGPathSegment>> BuildPathSegmentsFromByteStream(
    const SVGPathByteStream& stream,
    bool normalize) {
  if (stream.IsEmpty()) {
    return {};
  }

  SVGPathSegmentsBuilder builder;
  SVGPathByteStreamSource source(stream);
  if (normalize) {
    SVGPathNormalizer normalizer(&builder);
    svg_path_parser::ParsePath(source, normalizer);
  } else {
    svg_path_parser::ParsePath(source, builder);
  }
  return builder.Finalize();
}

SVGPathByteStream BuildByteStreamFromSegments(
    const HeapVector<Member<SVGPathSegment>>& segments) {
  SVGPathByteStreamBuilder builder;
  SVGPathSegmentsSource source(segments);
  svg_path_parser::ParsePath(source, builder);
  return builder.CopyByteStream();
}

}  // namespace blink