JensKrumsieck/ChemSharp

namespace ChemSharp.Molecules.Formats;

public abstract class FileFormat
{
    protected readonly string Path;
    protected FileFormat(string path) => Path = path;

    protected abstract void ParseLine(ReadOnlySpan<char> line);

    protected void ReadFromFileInternal()
    {
        using var fs = File.OpenRead(Path);
        ReadFromStreamInternal(fs);
    }

    protected void ReadFromStreamInternal(Stream data)
    {
        using var sr = new StreamReader(data);
        ReadInternal(sr);
    }

    protected void ReadFromStringInternal(string file)
    {
        var sr = new StringReader(file);
        ReadInternal(sr);
    }

    private void ReadInternal(TextReader sr)
    {
        while (sr.Peek() > 0)
        {
            var line = sr.ReadLine().AsSpan();
            ParseLine(line);
        }
    }
}