public void Pack(
IPackStreamContext streamContext,
IEnumerable <string> files,
long maxArchiveSize)
{
if (streamContext == null)
{
throw new ArgumentNullException("streamContext");
}
if (files == null)
{
throw new ArgumentNullException("files");
}
lock (this) {
try {
context = streamContext;
ResetProgressData();
CreateFci(maxArchiveSize);
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = context.OpenFileReadStream(
file,
out attributes,
out lastWriteTime);
if (fileStream != null)
{
totalFileBytes += fileStream.Length;
totalFiles++;
context.CloseFileReadStream(file, fileStream);
}
}
long uncompressedBytesInFolder = 0;
currentFileNumber = -1;
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = context.OpenFileReadStream(
file, out attributes, out lastWriteTime);
if (fileStream == null)
{
continue;
}
if (fileStream.Length >= NativeMethods.FCI.MAX_FOLDER)
{
throw new NotSupportedException(String.Format(
CultureInfo.InvariantCulture,
"File {0} exceeds maximum file size " +
"for cabinet format.",
file));
}
if (uncompressedBytesInFolder > 0)
{
// Automatically create a new folder if this file
// won't fit in the current folder.
bool nextFolder = uncompressedBytesInFolder
+ fileStream.Length >= NativeMethods.FCI.MAX_FOLDER;
// Otherwise ask the client if it wants to
// move to the next folder.
if (!nextFolder)
{
object nextFolderOption = streamContext.GetOption(
"nextFolder",
new object[] { file, currentFolderNumber });
nextFolder = Convert.ToBoolean(
nextFolderOption, CultureInfo.InvariantCulture);
}
if (nextFolder)
{
FlushFolder();
uncompressedBytesInFolder = 0;
}
}
if (currentFolderTotalBytes > 0)
{
currentFolderTotalBytes = 0;
currentFolderNumber++;
uncompressedBytesInFolder = 0;
}
currentFileName = file;
currentFileNumber++;
currentFileTotalBytes = fileStream.Length;
currentFileBytesProcessed = 0;
OnProgress(ArchiveProgressType.StartFile);
uncompressedBytesInFolder += fileStream.Length;
AddFile(
file,
fileStream,
attributes,
lastWriteTime,
false,
CompressionLevel);
}
FlushFolder();
FlushCabinet();
} finally {
if (CabStream != null)
{
context.CloseArchiveWriteStream(
currentArchiveNumber,
currentArchiveName,
CabStream);
CabStream = null;
}
if (FileStream != null)
{
context.CloseFileReadStream(
currentFileName, FileStream);
FileStream = null;
}
context = null;
if (fciHandle != null)
{
fciHandle.Dispose();
fciHandle = null;
}
}
}
}
