private static IEnumerable <Idx.Entry> OpenIdx(string fileName)
{
using var idxStream = File.OpenRead(fileName);
if (!Idx.IsValid(idxStream))
{
throw new CustomException($"The IDX {fileName} is invalid or not recognized.");
}
return(Idx.Read(idxStream));
}
public static List <Msg.Entry> ReadMsgFromIdx(string fileName) => File.OpenRead(fileName).Using(stream =>
{
if (!Idx.IsValid(stream))
{
throw new InvalidFileException(typeof(Idx));
}
var imgFileName = $"{Path.GetFileNameWithoutExtension(fileName)}.img";
var imgFilePath = Path.Combine(Path.GetDirectoryName(fileName), imgFileName);
if (!File.Exists(imgFilePath))
{
throw new FileNotFoundException($"Unable to find {imgFileName} in the same directory of the IDX.");
}
return(File.OpenRead(imgFilePath).Using(imgStream => ReadMsgFromIdx(stream, imgStream)));
});
