public static void FromFileToFolder(string srcFilePath, string dstPath) {
// decompress to temp file,
// run through the stream, writing the data out to the first file, then copy to all duplicates
var tmp = srcFilePath + ".tmp";
// decompress file
if (File.Exists(tmp)) File.Delete(tmp);
using (var compressing = new GZipStream(File.OpenRead(srcFilePath), CompressionMode.Decompress))
using (var cat = File.OpenWrite(tmp))
{
compressing.CopyTo(cat, 65536);
cat.Flush();
}
// scan the file
long pathsLength;
using (var fs = File.OpenRead(tmp))
while (ReadLength(fs, out pathsLength))
{
// get all target paths
long fileLength;
var subPaths = ReadUtf8(fs, pathsLength).Split('|');
if (!ReadLength(fs, out fileLength)) throw new Exception("Malformed file: no length for data");
// read source into first file
var firstPath = dstPath+subPaths[0];
PutFolder(firstPath);
CopyLength(fs, firstPath, fileLength);
if (subPaths.Length == 1) continue;
// copy first file into all other locations
var srcInfo = new PathInfo(firstPath);
for (int i = 1; i < subPaths.Length; i++) {
var thisPath = dstPath + subPaths[i];
PutFolder(thisPath);
if (!NativeIO.CopyFile(srcInfo, new PathInfo(thisPath))) throw new Exception("Failed to write "+ thisPath);
}
}
// cleanup temp file
File.Delete(tmp);
}
static void WriteFileToAllPaths(IList<string> subPaths, Stream fs, long fileLength, IEnumerable<byte> expectedHash)
{
// read source into first file
var firstPath = subPaths[0];
PutFolder(firstPath);
// <data:byte array>
CopyLength(fs, firstPath, fileLength, expectedHash);
if (subPaths.Count == 1)
{
return;
}
// copy first file into all other locations
var srcInfo = new PathInfo(firstPath);
for (int i = 1; i < subPaths.Count; i++)
{
var thisPath = subPaths[i];
PutFolder(thisPath);
if (!NativeIO.CopyFile(srcInfo, new PathInfo(thisPath)))
{
throw new Exception("Failed to write " + thisPath);
}
}
}
static void PutFolder(string path)
{
var pinfo = new PathInfo(path);
if (pinfo.Parent != null) NativeIO.CreateDirectory(new PathInfo(path).Parent, recursive:true);
}
/// <summary>
/// Creates a new directory. If <paramref name="recursive" /> is false, the parent directory must exists.
/// </summary>
/// <param name="pathInfo">
/// Complete path to create
/// </param>
/// <param name="recursive">If <paramref name="recursive" /> is false, the parent directory must exist.</param>
public static void CreateDirectory(PathInfo pathInfo, bool recursive = false)
{
if (recursive)
{
var parent = pathInfo.Parent;
if (parent.IsRoot)
{
// Root
if (!parent.Exists)
{
throw new Exception("Root path does not exists. You cannot create a root this way. " + parent.FullName);
}
}
else if (!parent.Exists)
{
CreateDirectory(parent, true);
}
}
if (pathInfo.Exists)
{
return;
}
bool created = Win32SafeNativeMethods.CreateDirectory(pathInfo.FullNameUnc, IntPtr.Zero);
int win32Error = Marshal.GetLastWin32Error();
if (!created)
{
NativeExceptionMapping(pathInfo.FullName, win32Error);
}
}
/// <summary>
/// Opens a <see cref="FileStream"/> for access at the given path. Ensure stream is correctly disposed.
/// </summary>
public static FileStream OpenFileStream(PathInfo pathInfo, FileAccess fileAccess, FileMode fileOption = FileMode.Open, FileShare shareMode = FileShare.Read, Int32 buffer = 0)
{
var fileHandle = Win32SafeNativeMethods.CreateFile(pathInfo.FullNameUnc, fileAccess, shareMode, IntPtr.Zero, fileOption, 0, IntPtr.Zero);
var win32Error = Marshal.GetLastWin32Error();
if (fileHandle.IsInvalid)
{
NativeExceptionMapping(pathInfo.FullName, win32Error); // Throws an exception
}
return buffer > 0 ? new FileStream(fileHandle, fileAccess, buffer) : new FileStream(fileHandle, fileAccess);
}
/// <summary>
/// Creates the file information on the basis of the path and <see cref="Win32FindData"/>
/// </summary>
/// <param name="pathInfo">Full path to the file</param>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
internal FileDetail(PathInfo pathInfo, Win32FindData win32FindData)
{
PathInfo = pathInfo;
CalculateSize(win32FindData);
}
/// <summary>
/// Copies a file and overwrite existing files if desired.
/// </summary>
/// <param name="sourceFilePath">Full source path</param>
/// <param name="targetFilePath">Full target path</param>
/// <param name="overwrite">true to overwrite existing files</param>
/// <returns>True if copy succeeded, false if not. Check last Win32 Error to get further information.</returns>
public static bool CopyFile(PathInfo sourceFilePath, PathInfo targetFilePath, bool overwrite = false)
{
bool failOnExists = !overwrite;
bool result = Win32SafeNativeMethods.CopyFile(sourceFilePath.FullNameUnc, targetFilePath.FullNameUnc, failOnExists);
int win32Error = Marshal.GetLastWin32Error();
NativeExceptionMapping(sourceFilePath.FullName, win32Error);
return result;
}
/// <summary>
/// Loads a file from specified path
/// </summary>
/// <param name="pathInfo">Full path</param>
/// <returns>
/// <see cref="FileDetail" />
/// </returns>
public static FileDetail ReadFileDetails(PathInfo pathInfo)
{
Win32FindData findData;
if (!TryGetFindDataFromPath(pathInfo, out findData))
{
throw new Exception("PathNotFound " + pathInfo.FullName);
}
if (DetermineFileSystemEntry(findData) != FileOrDirectory.File)
{
throw new Exception("UnmatchedFileSystemEntryType " + FileOrDirectory.File + ", " + FileOrDirectory.Directory + ", " + pathInfo.FullName);
}
return new FileDetail(pathInfo, findData);
}
/// <summary>
/// Returns the <see cref="Win32FindData" /> from specified <paramref name="pathInfo" />
/// </summary>
/// <param name="pathInfo">Path to the file system entry</param>
/// <returns>
/// <see cref="Win32FindData" />
/// </returns>
public static Win32FindData GetFindDataFromPath(PathInfo pathInfo)
{
var win32FindData = new Win32FindData();
int win32Error;
using (var fileHandle = FindFirstSafeFileHandle(pathInfo.FullNameUnc, win32FindData, out win32Error))
{
// Take care of invalid handles
if (fileHandle.IsInvalid)
{
NativeExceptionMapping(pathInfo.FullName, win32Error);
}
// Ignore . and .. directories
if (!IsSystemDirectoryEntry(win32FindData))
{
return win32FindData;
}
}
throw new Exception("PathNotFound " + pathInfo.FullName);
}
/// <summary>
/// Reurns true if passed path exists
/// </summary>
/// <param name="pathInfo">Path to check</param>
public static Boolean Exists(PathInfo pathInfo)
{
uint attributes = Win32SafeNativeMethods.GetFileAttributes(pathInfo.FullNameUnc);
return !Equals(attributes, 0xffffffff);
}
/// <summary>
/// Gets the <see cref="Win32FindData" /> from the passed path.
/// </summary>
/// <param name="pathInfo">Path</param>
/// <param name="pathFindData"><seealso cref="Win32FindData" />. Will be null if path does not exist.</param>
/// <returns>true if path is valid and <see cref="Win32FindData" /> is set</returns>
/// <remarks>
/// <see>
/// <cref>QuickIOCommon.NativeExceptionMapping</cref>
/// </see>
/// if invalid handle found.
/// </remarks>
public static bool TryGetFindDataFromPath(PathInfo pathInfo, out Win32FindData pathFindData)
{
var win32FindData = new Win32FindData();
int win32Error;
using (var fileHandle = FindFirstSafeFileHandle(pathInfo.FullNameUnc, win32FindData, out win32Error))
{
// Take care of invalid handles
if (fileHandle.IsInvalid)
{
NativeExceptionMapping(pathInfo.FullName, win32Error);
}
// Ignore . and .. directories
if (!IsSystemDirectoryEntry(win32FindData))
{
pathFindData = win32FindData;
return true;
}
}
pathFindData = null;
return false;
}
/// <summary>
/// Returns true if the file or directory is a reparse point (hopefully a symlink and not a hardlink)
/// </summary>
public static Boolean IsSymLink(PathInfo pathInfo)
{
return (Win32SafeNativeMethods.GetFileAttributes(pathInfo.FullNameUnc) & (uint)FileAttrFlags.FILE_ATTRIBUTE_REPARSE_POINT) == (uint)FileAttrFlags.FILE_ATTRIBUTE_REPARSE_POINT;
}
/// <summary>
/// Reurns true if passed path exists
/// </summary>
/// <param name="pathInfo">Path to check</param>
public static Boolean Exists(PathInfo pathInfo)
{
var attributes = (FileAttrFlags)Win32SafeNativeMethods.GetFileAttributes(pathInfo.FullNameUnc);
return !Equals(attributes, FileAttrFlags.INVALID_FILE_ATTRIBUTES);
}
