public static FileCanBeOpenedResult FileCanBeOpened(string path, ILogger logger)
{
try
{
if (IsPathADirectory(path))
{
return(FileCanBeOpenedResult.Success());
}
using var zip = ZipFile.Open(path, ZipArchiveMode.Read);
var records = zip.Entries.ToList(); // This would fail if zip is corrupt or not a zip file at all
var firstFileEntry = records.FirstOrDefault(record => record.Name != ""); // Only files have names in ZipArchiveEntry (per https://stackoverflow.com/questions/40223451/how-to-tell-if-a-ziparchiveentry-is-directory)
if (firstFileEntry == null)
{
return(FileCanBeOpenedResult.Failure("Zip file appears to not contain any files"));
}
using (var stream = firstFileEntry.Open())
{
var reader = new SimpleLinePerLineReader(stream);
var line = reader.ReadLines().FirstOrDefault(); // This would fail if zip is password protected
}
return(FileCanBeOpenedResult.Success());
}
catch (Exception ex)
{
logger?.LogDebug($"{nameof(FileCanBeOpened)} failed with `{ex.Message}`");
return(FileCanBeOpenedResult.Failure(ex.Message));
}
}
public void ReadTestFileWithPlainLines()
{
using (var stream = TestLogFiles.OpenTestFileWithPlainLines())
{
var results = new SimpleLinePerLineReader(stream).ReadLines().ToList();
results.Should().BeEquivalentTo(ExpectedResults);
}
}
public void ReadEmptyTestFile()
{
using (var stream = TestLogFiles.OpenEmptyTestFile())
{
var results = new SimpleLinePerLineReader(stream).ReadLines().ToList();
results.Should().Equal(new List <ReadLogLineResult>());
}
}
