private void EstimateUnitConversionScale()
{
using (var reader = new AdvancedLineStreamReader(_filePath))
{
while (!reader.EndOfStream)
{
var(successful, line) = reader.FindLineUntil(MatchDrillCommand, MatchEndOfFile);
if (successful)
{
var value = MatchValueCommand.Matches(line)[0].Groups[2].Value.Trim('-');
if (CoordinateSystem == CoordinateSystem.INCH)
{
SetUnitConversionScale(1d / 10000d);
}
else if (value.Length <= 5)
{
SetUnitConversionScale(1d / 100);
}
else
{
SetUnitConversionScale(1d / 1000);
}
}
break;
}
}
}
private void ReadHeader()
{
using (var reader = new AdvancedLineStreamReader(_filePath))
{
while (!reader.EndOfStream)
{
var line = reader.ReadLine()?.Trim();
if (MatchCoordinatesCommand.IsMatch(line))
{
CoordinateSystem = MatchCoordinatesCommand.Matches(line)[0].Groups[1].Value.StartsWith("METRIC", StringComparison.OrdinalIgnoreCase) ? CoordinateSystem.METRIC : CoordinateSystem.INCH;
if (MatchDecimalPointNotationStyleCommand.IsMatch(line))
{
TrailingZeroSuppressionStyle = line.EndsWith("LZ", StringComparison.OrdinalIgnoreCase) ? TrailingZeroSuppressionStyle.LZ : TrailingZeroSuppressionStyle.TZ;
}
}
else if (MatchVersionCommand.IsMatch(line))
{
Version = int.Parse(MatchVersionCommand.Matches(line)[0].Groups[1].Value);
}
else if (MatchFormatCommand.IsMatch(line))
{
Format = int.Parse(MatchFormatCommand.Matches(line)[0].Groups[1].Value);
}
else if (MatchToolCommand.IsMatch(line))
{
var match = MatchToolCommand.Matches(line)[0];
Tools[match.Groups[1].Value] = double.Parse(match.Groups[2].Value);
}
else if (
MatchDrillCommand.IsMatch(line) ||
MatchEndOfHeaderCommand.IsMatch(line)
)
{
break;
}
}
}
}
