private static MsiFile[] GetMsiFileFromFileNames(FileInfo msi, IEnumerable <string> fileNamesToExtract)
{
if (msi == null)
{
throw new ArgumentNullException("msi");
}
var msiFiles = MsiFile.CreateMsiFilesFromMsi(msi.FullName);
Array.Sort(msiFiles, (f1, f2) => string.Compare(f1.LongFileName, f2.LongFileName, StringComparison.InvariantCulture));
var fileNamesToExtractAsMsiFiles = new List <MsiFile>();
foreach (var fileName in fileNamesToExtract)
{
var found = Array.BinarySearch(msiFiles, fileName, FileNameComparer.Default);
if (found >= 0)
{
fileNamesToExtractAsMsiFiles.Add(msiFiles[found]);
}
else
{
Console.WriteLine("File {0} was not found in the msi.", fileName);
}
}
return(fileNamesToExtractAsMsiFiles.ToArray());
}
/// <summary>
/// Extracts the compressed files from the specified MSI file to the specified output directory.
/// If specified, the list of <paramref name="filesToExtract"/> objects are the only files extracted.
/// </summary>
/// <param name="outputDir"></param>
/// <param name="filesToExtract">The files to extract or null or empty to extract all files.</param>
/// <param name="progressCallback">Will be called during during the operation with progress information, and upon completion. The argument will be of type <see cref="ExtractionProgress"/>.</param>
/// <param name="msi"></param>
public static void ExtractFiles(FileInfo msi, DirectoryInfo outputDir, MsiFile[] filesToExtract = null, AsyncCallback progressCallback = null)
{
if (msi == null)
{
throw new ArgumentNullException("msi");
}
if (outputDir == null)
{
throw new ArgumentNullException("outputDir");
}
var filesExtractedSoFar = 0;
ExtractionProgress progress = null;
var msidb = new Database(msi.FullName, OpenDatabase.ReadOnly);
try
{
if (filesToExtract == null || filesToExtract.Length < 1)
{
filesToExtract = MsiFile.CreateMsiFilesFromMsi(msidb);
}
progress = new ExtractionProgress(progressCallback, filesToExtract.Length);
if (!msi.Exists)
{
Trace.WriteLine("File \'" + msi.FullName + "\' not found.");
progress.ReportProgress(ExtractionActivity.Complete, "", filesExtractedSoFar);
return;
}
progress.ReportProgress(ExtractionActivity.Initializing, "", filesExtractedSoFar);
outputDir.Create();
//map short file names to the msi file entry
var fileEntryMap = new Dictionary <string, MsiFile>(filesToExtract.Length, StringComparer.InvariantCulture);
foreach (var fileEntry in filesToExtract)
{
MsiFile existingFile;
if (fileEntryMap.TryGetValue(fileEntry.File, out existingFile))
{ //NOTE: This used to be triggered when we ignored case of file, but now we don't ignore case so this is unlikely to occur.
// Differing only by case is not compliant with the msi specification but some installers do it (e.g. python, see issue 28).
Debug.Print("!!Found duplicate file using key {0}. The existing key was {1}", fileEntry.File, existingFile.File);
}
else
{
fileEntryMap.Add(fileEntry.File, fileEntry);
}
}
Debug.Assert(fileEntryMap.Count == filesToExtract.Length, "Duplicate files must have caused some files to not be in the map.");
var cabInfos = CabsFromMsiToDisk(msidb, outputDir);
var cabDecompressors = MergeCabs(cabInfos);
var msCabinets = cabDecompressors as MSCabinet[] ?? cabDecompressors.ToArray();
try
{
foreach (var decompressor in msCabinets)
{
foreach (var compressedFile in decompressor.GetFiles())
{
// if the user didn't select this in the UI for extraction, skip it.
if (!fileEntryMap.ContainsKey(compressedFile.Filename))
{
continue;
}
var entry = fileEntryMap[compressedFile.Filename];
progress.ReportProgress(ExtractionActivity.ExtractingFile, entry.LongFileName, filesExtractedSoFar);
var targetDirectoryForFile = GetTargetDirectory(outputDir, entry.Directory);
var destName = Path.Combine(targetDirectoryForFile.FullName, entry.LongFileName);
if (File.Exists(destName))
{
Debug.Fail("output file already exists. We'll make it unique, but this is probably a strange msi or a bug in this program.");
//make unique
// ReSharper disable HeuristicUnreachableCode
Trace.WriteLine(string.Concat("Duplicate file found \'", destName, "\'"));
var duplicateCount = 0;
string uniqueName;
do
{
uniqueName = string.Concat(destName, ".", "duplicate", ++duplicateCount);
} while (File.Exists(uniqueName));
destName = uniqueName;
// ReSharper restore HeuristicUnreachableCode
}
Trace.WriteLine(string.Concat("Extracting File \'", compressedFile.Filename, "\' to \'", destName, "\'"));
compressedFile.ExtractTo(destName);
filesExtractedSoFar++;
}
}
}
finally
{ //cleanup the decompressors allocated in MergeCabs
foreach (var decomp in msCabinets)
{
decomp.Close(false);
File.Delete(decomp.LocalFilePath);
}
}
}
finally
{
if (msidb != null)
{
msidb.Close();
}
if (progress != null)
{
progress.ReportProgress(ExtractionActivity.Complete, "", filesExtractedSoFar);
}
}
}