/// <summary>
/// Replaces the contents of this file with the contents of another file, deleting the original file, and creating a backup of the replaced file and optionally ignores merge errors.
/// </summary>
/// <param name="destPath">The path of the file being replaced.</param>
/// <param name="destBackupPath">The path of the backup file (maybe null, in that case, it doesn't create any backup)</param>
/// <param name="ignoreMetadataErrors"><c>true</c> to ignore merge errors (such as attributes and access control lists (ACLs)) from the replaced file to the replacement file; otherwise, <c>false</c>.</param>
public void ReplaceTo(UPath destPath, UPath destBackupPath, bool ignoreMetadataErrors)
{
FileSystem.ReplaceFile(Path, destPath, destBackupPath, ignoreMetadataErrors);
}
/// <summary>
/// Initializes a new instance of the <see cref="FileEntry"/> class.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The file path.</param>
public FileEntry(IFileSystem fileSystem, UPath path) : base(fileSystem, path)
{
}
/// <summary>
/// Tries to get a <see cref="FileSystemEntry"/> for the specified path. If the file or directory does not exist, returns null.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The file or directory path.</param>
/// <returns>A new <see cref="FileSystemEntry"/> from the specified path.</returns>
public static FileSystemEntry TryGetFileSystemEntry(this IFileSystem fileSystem, UPath path)
{
var fileExists = fileSystem.FileExists(path);
if (fileExists)
{
return(new FileEntry(fileSystem, path));
}
var directoryExists = fileSystem.DirectoryExists(path);
if (directoryExists)
{
return(new DirectoryEntry(fileSystem, path));
}
return(null);
}
/// <summary>Moves a specified file to a new location, providing the option to specify a new file name.</summary>
/// <param name="destFileName">The path to move the file to, which can specify a different file name. </param>
/// <exception cref="T:System.IO.IOException">
/// An I/O error occurs, such as the destination file already exists or the
/// destination device is not ready.
/// </exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="destFileName" /> is null.
/// </exception>
/// <exception cref="T:System.ArgumentException">
/// <paramref name="destFileName" /> is empty, contains only white spaces, or contains invalid characters.
/// </exception>
/// <exception cref="T:System.Security.SecurityException">The caller does not have the required permission. </exception>
/// <exception cref="T:System.UnauthorizedAccessException">
/// <paramref name="destFileName" /> is read-only or is a directory.
/// </exception>
/// <exception cref="T:System.IO.FileNotFoundException">The file is not found. </exception>
/// <exception cref="T:System.IO.DirectoryNotFoundException">
/// The specified path is invalid, such as being on an unmapped
/// drive.
/// </exception>
/// <exception cref="T:System.IO.PathTooLongException">
/// The specified path, file name, or both exceed the system-defined
/// maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names
/// must be less than 260 characters.
/// </exception>
/// <exception cref="T:System.NotSupportedException">
/// <paramref name="destFileName" /> contains a colon (:) in the middle of the string.
/// </exception>
public void MoveTo(UPath destFileName)
{
FileSystem.MoveFile(Path, destFileName);
}
private SearchPattern(ref UPath path, ref string searchPattern)
{
path.AssertAbsolute();
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
this._exactMatch = null;
this._regexMatch = null;
// Optimized path, most common case
if (searchPattern == "*")
{
return;
}
if (searchPattern.StartsWith("/"))
{
throw new ArgumentException($"The search pattern `{searchPattern}` cannot start by an absolute path `/`");
}
searchPattern = searchPattern.Replace('\\', '/');
// If the path contains any directory, we need to concatenate the directory part with the input path
if (searchPattern.IndexOf('/') > 0)
{
var pathPattern = new UPath(searchPattern);
var directory = pathPattern.GetDirectory();
if (!directory.IsNull && !directory.IsEmpty)
{
path /= directory;
}
searchPattern = pathPattern.GetName();
// If the search pattern is again a plain any, optimized path
if (searchPattern == "*")
{
return;
}
}
var startIndex = 0;
StringBuilder builder = null;
try
{
int nextIndex;
while ((nextIndex = searchPattern.IndexOfAny(SpecialChars, startIndex)) >= 0)
{
if (builder == null)
{
builder = UPath.GetSharedStringBuilder();
builder.Append("^");
}
var lengthToEscape = nextIndex - startIndex;
if (lengthToEscape > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, lengthToEscape));
builder.Append(toEscape);
}
var c = searchPattern[nextIndex];
var regexPatternPart = c == '*' ? "[^/]*" : "[^/]";
builder.Append(regexPatternPart);
startIndex = nextIndex + 1;
}
if (builder == null)
{
this._exactMatch = searchPattern;
}
else
{
var length = searchPattern.Length - startIndex;
if (length > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, length));
builder.Append(toEscape);
}
builder.Append("$");
var regexPattern = builder.ToString();
this._regexMatch = new Regex(regexPattern);
}
}
finally
{
if (builder != null)
{
builder.Length = 0;
}
}
}
/// <summary>
/// Copies a file between two filesystems.
/// </summary>
/// <param name="fs">The source filesystem</param>
/// <param name="destFileSystem">The destination filesystem</param>
/// <param name="srcPath">The source path of the file to copy from the source filesystem</param>
/// <param name="destPath">The destination path of the file in the destination filesystem</param>
/// <param name="overwrite"><c>true</c> to overwrite an existing destination file</param>
public static void CopyFileCross(this IFileSystem fs, IFileSystem destFileSystem, UPath srcPath, UPath destPath, bool overwrite)
{
if (destFileSystem == null)
{
throw new ArgumentNullException(nameof(destFileSystem));
}
// If this is the same filesystem, use the file system directly to perform the action
if (fs == destFileSystem)
{
fs.CopyFile(srcPath, destPath, overwrite);
return;
}
srcPath.AssertAbsolute(nameof(srcPath));
if (!fs.FileExists(srcPath))
{
throw NewFileNotFoundException(srcPath);
}
destPath.AssertAbsolute(nameof(destPath));
var destDirectory = destPath.GetDirectory();
if (!destFileSystem.DirectoryExists(destDirectory))
{
throw NewDirectoryNotFoundException(destDirectory);
}
if (destFileSystem.FileExists(destPath) && !overwrite)
{
throw new IOException($"The destination file path `{destPath}` already exist and overwrite is false");
}
using (var sourceStream = fs.OpenFile(srcPath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
var copied = false;
try
{
using (var destStream = destFileSystem.OpenFile(destPath, FileMode.Create, FileAccess.Write, FileShare.Read))
{
sourceStream.CopyTo(destStream);
}
// NOTE: For some reasons, we can sometimes get an Unauthorized access if we try to set the LastWriteTime after the SetAttributes
// So we setup it here.
destFileSystem.SetLastWriteTime(destPath, fs.GetLastWriteTime(srcPath));
// Preserve attributes and LastWriteTime as a regular File.Copy
destFileSystem.SetAttributes(destPath, fs.GetAttributes(srcPath));
copied = true;
}
finally
{
if (!copied)
{
try
{
destFileSystem.DeleteFile(destPath);
}
catch
{
// ignored
}
}
}
}
}
/// <summary>
/// Returns an enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files and directories.</param>
/// <returns>An enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.</returns>
public static IEnumerable <FileSystemEntry> EnumerateFileSystemEntries(this IFileSystem fileSystem, UPath path)
{
return(EnumerateFileSystemEntries(fileSystem, path, "*"));
}
/// <summary>
/// Parses and normalize the specified path and <see cref="SearchPattern"/>.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="searchPattern">The search pattern.</param>
/// <returns>An instance of <see cref="SearchPattern"/> in order to use <see cref="Match(Zio.UPath)"/> on a path.</returns>
public static SearchPattern Parse(ref UPath path, ref string searchPattern)
{
return(new SearchPattern(ref path, ref searchPattern));
}
/// <summary>
/// Returns an enumerable collection of file or directory names in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files or directories.</param>
/// <param name="searchPattern">The search string to match against the names of directories in path. This parameter can contain a combination
/// of valid literal path and wildcard (* and ?) characters (see Remarks), but doesn't support regular expressions.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory
/// or should include all subdirectories.
/// The default value is TopDirectoryOnly.</param>
/// <returns>An enumerable collection of the full names (including paths) for the files and directories in the directory specified by path.</returns>
public static IEnumerable <UPath> EnumeratePaths(this IFileSystem fileSystem, UPath path, string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
return(fileSystem.EnumeratePaths(path, searchPattern, searchOption, SearchTarget.Both));
}
/// <summary>
/// Returns an enumerable collection of <see cref="DirectoryEntry"/> that match a search pattern in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for directories.</param>
/// <param name="searchPattern">The search string to match against the names of directories in path. This parameter can contain a combination
/// of valid literal path and wildcard (* and ?) characters (see Remarks), but doesn't support regular expressions.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory
/// or should include all subdirectories.
/// The default value is TopDirectoryOnly.</param>
/// <returns>An enumerable collection of <see cref="DirectoryEntry"/> from the specified path.</returns>
public static IEnumerable <DirectoryEntry> EnumerateDirectoryEntries(this IFileSystem fileSystem, UPath path, string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
foreach (var subPath in EnumerateDirectories(fileSystem, path, searchPattern, searchOption))
{
yield return(new DirectoryEntry(fileSystem, subPath));
}
}
/// <summary>
/// Returns an enumerable collection of file or directory names in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files or directories.</param>
/// <returns>An enumerable collection of the full names (including paths) for the files and directories in the directory specified by path.</returns>
public static IEnumerable <UPath> EnumeratePaths(this IFileSystem fileSystem, UPath path)
{
return(EnumeratePaths(fileSystem, path, "*"));
}
/// <summary>
/// Returns an enumerable collection of file names in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files.</param>
/// <param name="searchPattern">The search string to match against the names of directories in path. This parameter can contain a combination
/// of valid literal path and wildcard (* and ?) characters (see Remarks), but doesn't support regular expressions.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory
/// or should include all subdirectories.
/// The default value is TopDirectoryOnly.</param>
/// <returns>An enumerable collection of the full names (including paths) for the files in the directory specified by path.</returns>
public static IEnumerable <UPath> EnumerateFiles(this IFileSystem fileSystem, UPath path, string searchPattern, SearchOption searchOption)
{
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
foreach (var subPath in fileSystem.EnumeratePaths(path, searchPattern, searchOption, SearchTarget.File))
{
yield return(subPath);
}
}
/// <summary>
/// Creates or overwrites a file in the specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path and name of the file to create.</param>
/// <returns>A stream that provides read/write access to the file specified in path.</returns>
public static Stream CreateFile(this IFileSystem fileSystem, UPath path)
{
path.AssertAbsolute();
return(fileSystem.OpenFile(path, FileMode.Create, FileAccess.ReadWrite));
}
/// <summary>Copies an existing file to a new file, allowing the overwriting of an existing file.</summary>
/// <returns>
/// A new file, or an overwrite of an existing file if <paramref name="overwrite" /> is true. If the file exists
/// and <paramref name="overwrite" /> is false, an <see cref="T:System.IO.IOException" /> is thrown.
/// </returns>
/// <param name="destFileName">The name of the new file to copy to. </param>
/// <param name="overwrite">true to allow an existing file to be overwritten; otherwise, false. </param>
/// <exception cref="T:System.ArgumentException">
/// <paramref name="destFileName" /> is empty, contains only white spaces, or contains invalid characters.
/// </exception>
/// <exception cref="T:System.IO.IOException">
/// An error occurs, or the destination file already exists and
/// <paramref name="overwrite" /> is false.
/// </exception>
/// <exception cref="T:System.Security.SecurityException">The caller does not have the required permission. </exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="destFileName" /> is null.
/// </exception>
/// <exception cref="T:System.IO.DirectoryNotFoundException">
/// The directory specified in <paramref name="destFileName" />
/// does not exist.
/// </exception>
/// <exception cref="T:System.UnauthorizedAccessException">
/// A directory path is passed in, or the file is being moved to a
/// different drive.
/// </exception>
/// <exception cref="T:System.IO.PathTooLongException">
/// The specified path, file name, or both exceed the system-defined
/// maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names
/// must be less than 260 characters.
/// </exception>
/// <exception cref="T:System.NotSupportedException">
/// <paramref name="destFileName" /> contains a colon (:) in the middle of the string.
/// </exception>
public FileEntry CopyTo(UPath destFileName, bool overwrite)
{
FileSystem.CopyFile(Path, destFileName, overwrite);
return(new FileEntry(FileSystem, destFileName));
}
/// <summary>
/// Returns an enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files and directories.</param>
/// <param name="searchPattern">The search string to match against the names of directories in path. This parameter can contain a combination
/// of valid literal path and wildcard (* and ?) characters (see Remarks), but doesn't support regular expressions.</param>
/// <returns>An enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.</returns>
public static IEnumerable <FileSystemEntry> EnumerateFileSystemEntries(this IFileSystem fileSystem, UPath path, string searchPattern)
{
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
return(EnumerateFileSystemEntries(fileSystem, path, searchPattern, SearchOption.TopDirectoryOnly));
}
private SearchPattern(ref UPath path, ref string searchPattern)
{
path.AssertAbsolute();
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
_exactMatch = null;
_regexMatch = null;
// Optimized path, most common case
if (searchPattern == "*")
{
return;
}
if (searchPattern.StartsWith("/"))
{
throw new ArgumentException($"The search pattern `{searchPattern}` cannot start by an absolute path `/`");
}
searchPattern = searchPattern.Replace('\\', '/');
// If the path contains any directory, we need to concatenate the directory part with the input path
if (searchPattern.IndexOf('/') > 0)
{
var pathPattern = new UPath(searchPattern);
var directory = pathPattern.GetDirectory();
if (!directory.IsNull && !directory.IsEmpty)
{
path = path / directory;
}
searchPattern = pathPattern.GetName();
// If the search pattern is again a plain any, optimized path
if (searchPattern == "*")
{
return;
}
}
bool appendSpecialCaseForExt3Chars = false;
var startIndex = 0;
int nextIndex;
StringBuilder builder = null;
try
{
while ((nextIndex = searchPattern.IndexOfAny(SpecialChars, startIndex)) >= 0)
{
if (builder == null)
{
builder = UPath.GetSharedStringBuilder();
builder.Append("^");
}
var lengthToEscape = nextIndex - startIndex;
if (lengthToEscape > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, lengthToEscape));
builder.Append(toEscape);
}
var c = searchPattern[nextIndex];
var regexPatternPart = c == '*' ? "[^/]*" : "[^/]";
builder.Append(regexPatternPart);
// If the specified extension is exactly three characters long,
// the method returns files with extensions that begin with the specified extension.
// For example, "*.xls" returns both "book.xls" and "book.xlsx".
// 012345
// *.txt
if (c == '*' && nextIndex + 5 == searchPattern.Length && searchPattern[nextIndex + 1] == '.' && searchPattern.IndexOf('.', nextIndex + 2) < 0)
{
appendSpecialCaseForExt3Chars = true;
}
startIndex = nextIndex + 1;
}
if (builder == null)
{
_exactMatch = searchPattern;
}
else
{
var length = searchPattern.Length - startIndex;
if (length > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, length));
builder.Append(toEscape);
}
if (appendSpecialCaseForExt3Chars)
{
builder.Append("[^/]*");
}
builder.Append("$");
var regexPattern = builder.ToString();
_regexMatch = new Regex(regexPattern);
}
}
finally
{
if (builder != null)
{
builder.Length = 0;
}
}
}
/// <summary>
/// Returns an enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The path of the directory to look for files and directories.</param>
/// <param name="searchPattern">The search string to match against the names of directories in path. This parameter can contain a combination
/// of valid literal path and wildcard (* and ?) characters (see Remarks), but doesn't support regular expressions.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory
/// or should include all subdirectories.
/// The default value is TopDirectoryOnly.</param>
/// <param name="searchTarget">The search target either <see cref="SearchTarget.Both"/> or only <see cref="SearchTarget.Directory"/> or <see cref="SearchTarget.File"/>. Default is <see cref="SearchTarget.Both"/></param>
/// <returns>An enumerable collection of <see cref="FileSystemEntry"/> that match a search pattern in a specified path.</returns>
public static IEnumerable <FileSystemEntry> EnumerateFileSystemEntries(this IFileSystem fileSystem, UPath path, string searchPattern, SearchOption searchOption, SearchTarget searchTarget = SearchTarget.Both)
{
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
foreach (var subPath in fileSystem.EnumeratePaths(path, searchPattern, searchOption, searchTarget))
{
yield return(fileSystem.DirectoryExists(subPath) ? (FileSystemEntry) new DirectoryEntry(fileSystem, subPath) : new FileEntry(fileSystem, subPath));
}
}
/// <summary>
/// Normalizes the specified path and <see cref="SearchPattern"/>.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="searchPattern">The search pattern.</param>
public static void Normalize(ref UPath path, ref string searchPattern)
{
Parse(ref path, ref searchPattern);
}
/// <summary>
/// Gets a <see cref="FileSystemEntry"/> for the specified path. If the file or directory does not exist, throws a <see cref="FileNotFoundException"/>
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="path">The file or directory path.</param>
/// <returns>A new <see cref="FileSystemEntry"/> from the specified path.</returns>
public static FileSystemEntry GetFileSystemEntry(this IFileSystem fileSystem, UPath path)
{
var fileExists = fileSystem.FileExists(path);
if (fileExists)
{
return(new FileEntry(fileSystem, path));
}
var directoryExists = fileSystem.DirectoryExists(path);
if (directoryExists)
{
return(new DirectoryEntry(fileSystem, path));
}
throw NewFileNotFoundException(path);
}
public FileChangedEventArgs(IFileSystem fileSystem, WatcherChangeTypes changeType, UPath fullPath)
{
if (fileSystem is null)
{
throw new ArgumentNullException(nameof(fileSystem));
}
fullPath.AssertNotNull(nameof(fullPath));
fullPath.AssertAbsolute(nameof(fullPath));
FileSystem = fileSystem;
ChangeType = changeType;
FullPath = fullPath;
Name = fullPath.GetName();
}
/// <summary>
/// Moves a file between two filesystems.
/// </summary>
/// <param name="fs">The source filesystem</param>
/// <param name="destFileSystem">The destination filesystem</param>
/// <param name="srcPath">The source path of the file to move from the source filesystem</param>
/// <param name="destPath">The destination path of the file in the destination filesystem</param>
public static void MoveFileCross(this IFileSystem fs, IFileSystem destFileSystem, UPath srcPath, UPath destPath)
{
if (destFileSystem == null)
{
throw new ArgumentNullException(nameof(destFileSystem));
}
// If this is the same filesystem, use the file system directly to perform the action
if (fs == destFileSystem)
{
fs.MoveFile(srcPath, destPath);
return;
}
// Check source
srcPath.AssertAbsolute(nameof(srcPath));
if (!fs.FileExists(srcPath))
{
throw NewFileNotFoundException(srcPath);
}
// Check destination
destPath.AssertAbsolute(nameof(destPath));
var destDirectory = destPath.GetDirectory();
if (!destFileSystem.DirectoryExists(destDirectory))
{
throw NewDirectoryNotFoundException(destPath);
}
if (destFileSystem.DirectoryExists(destPath))
{
throw NewDestinationDirectoryExistException(destPath);
}
if (destFileSystem.FileExists(destPath))
{
throw NewDestinationFileExistException(destPath);
}
using (var sourceStream = fs.OpenFile(srcPath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
var copied = false;
try
{
using (var destStream = destFileSystem.OpenFile(destPath, FileMode.Create, FileAccess.Write, FileShare.Read))
{
sourceStream.CopyTo(destStream);
}
// Preserve all attributes and times
destFileSystem.SetAttributes(destPath, fs.GetAttributes(srcPath));
destFileSystem.SetCreationTime(destPath, fs.GetCreationTime(srcPath));
destFileSystem.SetLastAccessTime(destPath, fs.GetLastAccessTime(srcPath));
destFileSystem.SetLastWriteTime(destPath, fs.GetLastWriteTime(srcPath));
copied = true;
}
finally
{
if (!copied)
{
try
{
destFileSystem.DeleteFile(destPath);
}
catch
{
// ignored
}
}
}
}
var deleted = false;
try
{
fs.DeleteFile(srcPath);
deleted = true;
}
finally
{
if (!deleted)
{
try
{
destFileSystem.DeleteFile(destPath);
}
catch
{
// ignored
}
}
}
}
