private static bool ComputeChecksums(string fileMask, bool recurse, string outputFilePath, bool fullPathsInResults, bool previewMode)
{
var currentFilePath = "No file (processing has not yet started)";
try
{
var directoryPath = ".";
var colonIndex = fileMask.LastIndexOf(':');
if (colonIndex > 0 && fileMask.LastIndexOf('\\') < 0)
{
// User likely provided a file mask similar to z:*.raw
// Auto-switch to z:\*.raw
fileMask = fileMask.Replace(":", @":\");
}
var slashIndex = fileMask.LastIndexOf('\\');
if (slashIndex > -1)
{
// Extract the directory info from fileMask
directoryPath = fileMask.Substring(0, slashIndex);
if (slashIndex >= fileMask.Length)
{
Console.WriteLine("Note: FileMask ended in a slash; will process all files in " + directoryPath);
fileMask = "*.*";
}
else
{
fileMask = fileMask.Substring(slashIndex + 1);
}
}
if (!(fileMask.Contains("*") || fileMask.Contains("?")))
{
var testPath = Path.Combine(directoryPath, fileMask);
if (Directory.Exists(testPath))
{
directoryPath = testPath;
fileMask = "*.*";
}
}
if (string.IsNullOrWhiteSpace(outputFilePath))
{
outputFilePath = "CheckSumFile_" + DateTime.Now.ToString("yyyy-MM-dd") + ".txt";
}
var msg = "Looking for files matching " + fileMask;
if (directoryPath == ".")
{
msg += " in the current directory";
}
else
{
msg += " in directory " + directoryPath;
}
if (recurse)
{
msg += " and its subdirectories";
}
Console.WriteLine(msg);
var workingDirectory = new DirectoryInfo(directoryPath);
var searchOption = SearchOption.TopDirectoryOnly;
if (recurse)
{
searchOption = SearchOption.AllDirectories;
}
Console.WriteLine(directoryPath);
Console.WriteLine(fileMask);
var foundFiles = workingDirectory.GetFiles(fileMask, searchOption);
if (foundFiles.Length == 0)
{
msg = "Did not find any files matching " + fileMask + " in " + workingDirectory.FullName;
if (recurse)
{
msg += " or its subdirectories";
}
ShowErrorMessage(msg);
return(false);
}
if (previewMode)
{
foreach (var currentFile in foundFiles)
{
Console.WriteLine(currentFile.FullName);
}
return(true);
}
Console.WriteLine("Writing checksums to " + outputFilePath);
var outputFile = new FileInfo(outputFilePath);
// Create the output file
using (var writer = new StreamWriter(new FileStream(outputFile.FullName, FileMode.Create, FileAccess.Write, FileShare.Read)))
{
writer.AutoFlush = true;
writer.WriteLine("MD5\tSHA1\tBytes\tFilename");
var checkSumGenerator = new ChecksumGen
{
ThrowEvents = false
};
var filesProcessed = 0;
foreach (var currentFile in foundFiles)
{
if (string.Equals(outputFile.FullName, currentFile.FullName, StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
currentFilePath = currentFile.FullName;
var md5 = ComputeMD5(checkSumGenerator, currentFile);
var sha1 = ComputeSha1(checkSumGenerator, currentFile);
if (fullPathsInResults)
{
writer.WriteLine(md5 + "\t" + sha1 + "\t" + currentFile.Length + "\t" + currentFile.FullName);
}
else
{
writer.WriteLine(md5 + "\t" + sha1 + "\t" + currentFile.Length + "\t" + currentFile.Name);
}
filesProcessed++;
var percentComplete = filesProcessed / (float)foundFiles.Length * 100;
Console.WriteLine(percentComplete.ToString("0.0") + "%: " + currentFile.Name);
}
}
currentFilePath = "No file (processing complete)";
Thread.Sleep(250);
Console.WriteLine();
Console.WriteLine("Results:");
// Re-open the file and show the first 5 lines
using var reader = new StreamReader(new FileStream(outputFilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
// Set this to negative one to account for the header line
var filesShown = -1;
const int FILES_TO_SHOW = 4;
while (!reader.EndOfStream)
{
var dataLine = reader.ReadLine();
if (string.IsNullOrWhiteSpace(dataLine))
{
continue;
}
filesShown++;
if (filesShown <= FILES_TO_SHOW)
{
Console.WriteLine(dataLine);
}
}
var additionalFiles = filesShown - FILES_TO_SHOW;
if (additionalFiles > 0)
{
if (additionalFiles == 1)
{
Console.WriteLine("... plus 1 more file");
}
else
{
Console.WriteLine("... plus " + additionalFiles + " others");
}
}
return(true);
}
catch (Exception ex)
{
ShowErrorMessage("Error computing checksums, file " + currentFilePath + ": " + ex.Message, ex);
return(false);
}
}
private static string ComputeMD5(ChecksumGen checkSumGenerator, FileSystemInfo targetFile)
{
return(checkSumGenerator.GenerateMD5Hash(targetFile.FullName));
}
