private void CreateFci(long maxArchiveSize)
{
NativeMethods.FCI.CCAB ccab = new NativeMethods.FCI.CCAB();
if (maxArchiveSize > 0 && maxArchiveSize < ccab.cb)
{
ccab.cb = Math.Max(
NativeMethods.FCI.MIN_DISK, (int)maxArchiveSize);
}
object maxFolderSizeOption = this.context.GetOption(
"maxFolderSize", null);
if (maxFolderSizeOption != null)
{
long maxFolderSize = Convert.ToInt64(
maxFolderSizeOption, CultureInfo.InvariantCulture);
if (maxFolderSize > 0 && maxFolderSize < ccab.cbFolderThresh)
{
ccab.cbFolderThresh = (int)maxFolderSize;
}
}
this.maxCabBytes = ccab.cb;
ccab.szCab = this.context.GetArchiveName(0);
if (ccab.szCab == null)
{
throw new FileNotFoundException(
"Cabinet name not provided by stream context.");
}
ccab.setID = (short)new Random().Next(
Int16.MinValue, Int16.MaxValue + 1);
this.CabNumbers[ccab.szCab] = 0;
this.currentArchiveName = ccab.szCab;
this.totalArchives = 1;
this.CabStream = null;
this.Erf.Clear();
this.fciHandle = NativeMethods.FCI.Create(
this.ErfHandle.AddrOfPinnedObject(),
this.fciFilePlacedHandler,
this.fciAllocMemHandler,
this.fciFreeMemHandler,
this.fciOpenStreamHandler,
this.fciReadStreamHandler,
this.fciWriteStreamHandler,
this.fciCloseStreamHandler,
this.fciSeekStreamHandler,
this.fciDeleteFileHandler,
this.fciGetTempFileHandler,
ccab,
IntPtr.Zero);
this.CheckError(false);
}
internal override void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (this.fciHandle != null)
{
this.fciHandle.Dispose();
this.fciHandle = null;
}
}
}
finally
{
base.Dispose(disposing);
}
}
internal 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
{
this.context = streamContext;
this.ResetProgressData();
this.CreateFci(maxArchiveSize);
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = this.context.OpenFileReadStream(
file,
out attributes,
out lastWriteTime);
if (fileStream != null)
{
this.totalFileBytes += fileStream.Length;
this.totalFiles++;
this.context.CloseFileReadStream(file, fileStream);
}
}
long uncompressedBytesInFolder = 0;
this.currentFileNumber = -1;
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = this.context.OpenFileReadStream(
file, out attributes, out lastWriteTime);
if (fileStream == null)
{
continue;
}
if (fileStream.Length >= (long)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 >= (long)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, this.currentFolderNumber });
nextFolder = Convert.ToBoolean(
nextFolderOption, CultureInfo.InvariantCulture);
}
if (nextFolder)
{
this.FlushFolder();
uncompressedBytesInFolder = 0;
}
}
if (this.currentFolderTotalBytes > 0)
{
this.currentFolderTotalBytes = 0;
this.currentFolderNumber++;
uncompressedBytesInFolder = 0;
}
this.currentFileName = file;
this.currentFileNumber++;
this.currentFileTotalBytes = fileStream.Length;
this.currentFileBytesProcessed = 0;
this.OnProgress(ArchiveProgressType.StartFile);
uncompressedBytesInFolder += fileStream.Length;
this.AddFile(
file,
fileStream,
attributes,
lastWriteTime,
false,
this.CompressionLevel);
}
this.FlushFolder();
this.FlushCabinet();
}
finally
{
if (this.CabStream != null)
{
this.context.CloseArchiveWriteStream(
this.currentArchiveNumber,
this.currentArchiveName,
this.CabStream);
this.CabStream = null;
}
if (this.FileStream != null)
{
this.context.CloseFileReadStream(
this.currentFileName, this.FileStream);
this.FileStream = null;
}
this.context = null;
if (this.fciHandle != null)
{
this.fciHandle.Dispose();
this.fciHandle = null;
}
}
}
}
private void CreateFci(long maxArchiveSize)
{
NativeMethods.FCI.CCAB ccab = new NativeMethods.FCI.CCAB();
if (maxArchiveSize > 0 && maxArchiveSize < ccab.cb)
{
ccab.cb = Math.Max(
NativeMethods.FCI.MIN_DISK, (int) maxArchiveSize);
}
object maxFolderSizeOption = this.context.GetOption(
"maxFolderSize", null);
if (maxFolderSizeOption != null)
{
long maxFolderSize = Convert.ToInt64(
maxFolderSizeOption, CultureInfo.InvariantCulture);
if (maxFolderSize > 0 && maxFolderSize < ccab.cbFolderThresh)
{
ccab.cbFolderThresh = (int) maxFolderSize;
}
}
this.maxCabBytes = ccab.cb;
ccab.szCab = this.context.GetArchiveName(0);
if (ccab.szCab == null)
{
throw new FileNotFoundException(
"Cabinet name not provided by stream context.");
}
ccab.setID = (short) new Random().Next(
Int16.MinValue, Int16.MaxValue + 1);
this.CabNumbers[ccab.szCab] = 0;
this.currentArchiveName = ccab.szCab;
this.totalArchives = 1;
this.CabStream = null;
this.Erf.Clear();
this.fciHandle = NativeMethods.FCI.Create(
this.ErfHandle.AddrOfPinnedObject(),
this.fciFilePlacedHandler,
this.fciAllocMemHandler,
this.fciFreeMemHandler,
this.fciOpenStreamHandler,
this.fciReadStreamHandler,
this.fciWriteStreamHandler,
this.fciCloseStreamHandler,
this.fciSeekStreamHandler,
this.fciDeleteFileHandler,
this.fciGetTempFileHandler,
ccab,
IntPtr.Zero);
this.CheckError(false);
}
internal 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
{
this.context = streamContext;
this.ResetProgressData();
this.CreateFci(maxArchiveSize);
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = this.context.OpenFileReadStream(
file,
out attributes,
out lastWriteTime);
if (fileStream != null)
{
this.totalFileBytes += fileStream.Length;
this.totalFiles++;
this.context.CloseFileReadStream(file, fileStream);
}
}
long uncompressedBytesInFolder = 0;
this.currentFileNumber = -1;
foreach (string file in files)
{
FileAttributes attributes;
DateTime lastWriteTime;
Stream fileStream = this.context.OpenFileReadStream(
file, out attributes, out lastWriteTime);
if (fileStream == null)
{
continue;
}
if (fileStream.Length >= (long) 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 >= (long) 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, this.currentFolderNumber });
nextFolder = Convert.ToBoolean(
nextFolderOption, CultureInfo.InvariantCulture);
}
if (nextFolder)
{
this.FlushFolder();
uncompressedBytesInFolder = 0;
}
}
if (this.currentFolderTotalBytes > 0)
{
this.currentFolderTotalBytes = 0;
this.currentFolderNumber++;
uncompressedBytesInFolder = 0;
}
this.currentFileName = file;
this.currentFileNumber++;
this.currentFileTotalBytes = fileStream.Length;
this.currentFileBytesProcessed = 0;
this.OnProgress(ArchiveProgressType.StartFile);
uncompressedBytesInFolder += fileStream.Length;
this.AddFile(
file,
fileStream,
attributes,
lastWriteTime,
false,
this.CompressionLevel);
}
this.FlushFolder();
this.FlushCabinet();
}
finally
{
if (this.CabStream != null)
{
this.context.CloseArchiveWriteStream(
this.currentArchiveNumber,
this.currentArchiveName,
this.CabStream);
this.CabStream = null;
}
if (this.FileStream != null)
{
this.context.CloseFileReadStream(
this.currentFileName, this.FileStream);
this.FileStream = null;
}
this.context = null;
if (this.fciHandle != null)
{
this.fciHandle.Dispose();
this.fciHandle = null;
}
}
}
}
internal override void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (this.fciHandle != null)
{
this.fciHandle.Dispose();
this.fciHandle = null;
}
}
}
finally
{
base.Dispose(disposing);
}
}
