public override HexBufferLineProvider Create(HexBuffer buffer, HexBufferLineProviderOptions options) {
if (buffer == null)
throw new ArgumentNullException(nameof(buffer));
if (options == null)
throw new ArgumentNullException(nameof(options));
return new HexBufferLineProviderImpl(buffer, options);
}
HexBufferLineProviderOptions GetHexBufferLineProviderOptions() {
Debug.Assert(!double.IsNaN(lastFormattedLineSourceViewportWidth));
var options = new HexBufferLineProviderOptions();
options.CharsPerLine = (int)((lastFormattedLineSourceViewportWidth - FormattedLineSource.BaseIndentation) / FormattedLineSource.ColumnWidth);
options.BytesPerLine = Options.GetBytesPerLine();
options.GroupSizeInBytes = Options.GetGroupSizeInBytes();
options.ShowOffset = Options.ShowOffsetColumn();
options.OffsetLowerCaseHex = Options.IsOffsetLowerCaseHexEnabled();
options.OffsetFormat = Options.GetOffsetFormat();
options.StartPosition = Options.GetStartPosition();
options.EndPosition = Options.GetEndPosition();
options.BasePosition = Options.GetBasePosition();
options.UseRelativePositions = Options.UseRelativePositions();
options.ShowValues = Options.ShowValuesColumn();
options.ValuesLowerCaseHex = Options.IsValuesLowerCaseHexEnabled();
options.OffsetBitSize = Options.GetOffsetBitSize();
options.ValuesFormat = Options.GetValuesDisplayFormat();
options.ShowAscii = Options.ShowAsciiColumn();
options.ColumnOrder = new HexColumnType[3] { HexColumnType.Offset, HexColumnType.Values, HexColumnType.Ascii };
const int DEFAULT_CHARS_PER_LINE = 80;
if (options.CharsPerLine <= 0)
options.CharsPerLine = DEFAULT_CHARS_PER_LINE;
if (options.BytesPerLine < HexBufferLineProviderOptions.MinBytesPerLine)
options.BytesPerLine = 0;
else if (options.BytesPerLine > HexBufferLineProviderOptions.MaxBytesPerLine)
options.BytesPerLine = HexBufferLineProviderOptions.MaxBytesPerLine;
if (options.GroupSizeInBytes < 0)
options.GroupSizeInBytes = 0;
if (options.StartPosition >= HexPosition.MaxEndPosition)
options.StartPosition = 0;
if (options.EndPosition > HexPosition.MaxEndPosition)
options.EndPosition = HexPosition.MaxEndPosition;
if (options.StartPosition > options.EndPosition)
options.StartPosition = options.EndPosition;
if (options.BasePosition >= HexPosition.MaxEndPosition)
options.BasePosition = 0;
if (options.OffsetBitSize < HexBufferLineProviderOptions.MinOffsetBitSize)
options.OffsetBitSize = HexBufferLineProviderOptions.MinOffsetBitSize;
else if (options.OffsetBitSize > HexBufferLineProviderOptions.MaxOffsetBitSize)
options.OffsetBitSize = HexBufferLineProviderOptions.MaxOffsetBitSize;
if (options.OffsetFormat < HexBufferLineProviderOptions.HexOffsetFormat_First || options.OffsetFormat > HexBufferLineProviderOptions.HexOffsetFormat_Last)
options.OffsetFormat = HexOffsetFormat.Hex;
if (options.ValuesFormat < HexBufferLineProviderOptions.HexValuesDisplayFormat_First || options.ValuesFormat > HexBufferLineProviderOptions.HexValuesDisplayFormat_Last)
options.ValuesFormat = HexValuesDisplayFormat.HexByte;
return options;
}
/// <summary> /// Creates a new <see cref="HexBufferLineProvider"/> instance /// </summary> /// <param name="buffer">Buffer</param> /// <param name="options">Options</param> /// <returns></returns> public abstract HexBufferLineProvider Create(HexBuffer buffer, HexBufferLineProviderOptions options);
public HexBufferLineProviderImpl(HexBuffer buffer, HexBufferLineProviderOptions options) {
if (buffer == null)
throw new ArgumentNullException(nameof(buffer));
if (options == null)
throw new ArgumentNullException(nameof(options));
if (options.CharsPerLine < 0)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.BytesPerLine < HexBufferLineProviderOptions.MinBytesPerLine || options.BytesPerLine > HexBufferLineProviderOptions.MaxBytesPerLine)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.GroupSizeInBytes < 0)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.OffsetFormat < HexBufferLineProviderOptions.HexOffsetFormat_First || options.OffsetFormat > HexBufferLineProviderOptions.HexOffsetFormat_Last)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.StartPosition >= HexPosition.MaxEndPosition)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.EndPosition > HexPosition.MaxEndPosition)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.StartPosition > options.EndPosition)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.BasePosition >= HexPosition.MaxEndPosition)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.OffsetBitSize < HexBufferLineProviderOptions.MinOffsetBitSize || options.OffsetBitSize > HexBufferLineProviderOptions.MaxOffsetBitSize)
throw new ArgumentOutOfRangeException(nameof(options));
if (options.ValuesFormat < HexBufferLineProviderOptions.HexValuesDisplayFormat_First || options.ValuesFormat > HexBufferLineProviderOptions.HexValuesDisplayFormat_Last)
throw new ArgumentOutOfRangeException(nameof(options));
this.buffer = buffer;
columnOrder = TryCreateColumns(options.ColumnOrder ?? defaultColumnOrders);
if (columnOrder == null)
throw new ArgumentOutOfRangeException(nameof(options));
cellList = new List<HexCell>();
useRelativePositions = options.UseRelativePositions;
startPosition = options.StartPosition;
endPosition = options.EndPosition;
basePosition = options.BasePosition;
showOffset = options.ShowOffset;
showValues = options.ShowValues;
showAscii = options.ShowAscii;
valuesLowerCaseHex = options.ValuesLowerCaseHex;
int bitSize = options.OffsetBitSize;
if (bitSize == 0)
bitSize = CalculateOffsetBitSize();
offsetFormatter = CreateOffsetFormatter(options.OffsetFormat, bitSize, options.OffsetLowerCaseHex);
valueFormatter = valueFormatters[(int)options.ValuesFormat];
bytesPerLine = (ulong)options.BytesPerLine;
if (bytesPerLine == 0)
bytesPerLine = (ulong)CalculateBytesPerLine(options.CharsPerLine);
if (bytesPerLine % (ulong)valueFormatter.ByteCount != 0)
bytesPerLine = bytesPerLine - bytesPerLine % (ulong)valueFormatter.ByteCount + (ulong)valueFormatter.ByteCount;
if (bytesPerLine > (ulong)HexBufferLineProviderOptions.MaxBytesPerLine)
bytesPerLine = (ulong)(HexBufferLineProviderOptions.MaxBytesPerLine / valueFormatter.ByteCount * valueFormatter.ByteCount);
if (bytesPerLine <= 0)
throw new InvalidOperationException();
groupSizeInBytes = options.GroupSizeInBytes;
if (groupSizeInBytes == 0)
groupSizeInBytes = DEFAULT_GROUP_SIZE_IN_BYTES;
if ((ulong)groupSizeInBytes > bytesPerLine)
groupSizeInBytes = (int)bytesPerLine;
groupSizeInBytes = (groupSizeInBytes + valueFormatter.ByteCount - 1) / valueFormatter.ByteCount * valueFormatter.ByteCount;
if (groupSizeInBytes <= 0)
throw new InvalidOperationException();
CharsPerLine = CalculateCharsPerLine();
stringBuilder = new StringBuilder(CharsPerLine);
var totalBytes = options.EndPosition - options.StartPosition;
Debug.Assert(totalBytes <= new HexPosition(1, 0));
if (totalBytes == 0)
LineCount = 1;
else if (bytesPerLine == 1)
LineCount = totalBytes;
else if (totalBytes == new HexPosition(1, 0)) {
// 2^64 / x => (2^64 - x + x) / x => (2^64 - x) / x + 1
Debug.Assert(bytesPerLine > 1);
ulong d = (0UL - bytesPerLine) / bytesPerLine + 1UL;
ulong r = 0UL - (d * bytesPerLine);
LineCount = d + (r == 0UL ? 0UL : 1UL);
}
else {
ulong v = totalBytes.ToUInt64();
LineCount = v / bytesPerLine + (v % bytesPerLine == 0 ? 0UL : 1UL);
}
if (LineCount == 0)
throw new InvalidOperationException();
VST.Span offsetSpan, valuesSpan, asciiSpan;
CalculateColumnSpans(out offsetSpan, out valuesSpan, out asciiSpan);
OffsetSpan = offsetSpan;
ValuesSpan = valuesSpan;
AsciiSpan = asciiSpan;
var group = new List<HexGroupInformation>();
CalculateValuesGroupSpans(group);
ValuesGroup = new ReadOnlyCollection<HexGroupInformation>(group.ToArray());
CalculateAsciiGroupSpans(group);
AsciiGroup = new ReadOnlyCollection<HexGroupInformation>(group.ToArray());
if (ShowValues == ShowAscii && ValuesGroup.Count != AsciiGroup.Count)
throw new InvalidOperationException();
}
