/// <summary>
/// Moves a file between two filesystems.
/// </summary>
/// <param name="fs">The source filesystem</param>
/// <param name="srcPath">The source path of the file to move from the source filesystem</param>
/// <param name="destFileSystem">The destination filesystem</param>
/// <param name="destPath">The destination path of the file in the destination filesystem</param>
public static void MoveFileCross(this IFileSystem fs, UPath srcPath, IFileSystem destFileSystem, UPath destPath)
{
if (destFileSystem is 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
}
}
}
}
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($"The search pattern `{searchPattern}` cannot start by an absolute path `/`");
}
searchPattern = searchPattern.Replace('\\', '/');
// If the path contains any directory, we need to concatenate the directory part with the input path
if (searchPattern.IndexOf('/') > 0)
{
var pathPattern = new UPath(searchPattern);
var directory = pathPattern.GetDirectory();
if (!directory.IsNull && !directory.IsEmpty)
{
path = path / directory;
}
searchPattern = pathPattern.GetName();
// If the search pattern is again a plain any, optimized path
if (searchPattern == "*")
{
return;
}
}
var startIndex = 0;
int nextIndex;
StringBuilder builder = null;
try
{
while ((nextIndex = searchPattern.IndexOfAny(SpecialChars, startIndex)) >= 0)
{
if (builder == null)
{
builder = UPath.GetSharedStringBuilder();
builder.Append("^");
}
var lengthToEscape = nextIndex - startIndex;
if (lengthToEscape > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, lengthToEscape));
builder.Append(toEscape);
}
var c = searchPattern[nextIndex];
var regexPatternPart = c == '*' ? "[^/]*" : "[^/]";
builder.Append(regexPatternPart);
startIndex = nextIndex + 1;
}
if (builder == null)
{
_exactMatch = searchPattern;
}
else
{
var length = searchPattern.Length - startIndex;
if (length > 0)
{
var toEscape = Regex.Escape(searchPattern.Substring(startIndex, length));
builder.Append(toEscape);
}
builder.Append("$");
var regexPattern = builder.ToString();
_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="srcPath">The source path of the file to copy from the source filesystem</param>
/// <param name="destFileSystem">The destination 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, UPath srcPath, IFileSystem destFileSystem, UPath destPath, bool overwrite)
{
if (destFileSystem is 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($"The destination file path `{destPath}` already exist and overwrite is false");
}
using (var sourceStream = fs.OpenFile(srcPath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
var copied = false;
try
{
using (var destStream = destFileSystem.OpenFile(destPath, FileMode.Create, FileAccess.Write, FileShare.Read))
{
sourceStream.CopyTo(destStream);
}
// NOTE: For some reasons, we can sometimes get an Unauthorized access if we try to set the LastWriteTime after the SetAttributes
// So we setup it here.
destFileSystem.SetLastWriteTime(destPath, fs.GetLastWriteTime(srcPath));
// Preserve attributes and LastWriteTime as a regular File.Copy
destFileSystem.SetAttributes(destPath, fs.GetAttributes(srcPath));
copied = true;
}
finally
{
if (!copied)
{
try
{
destFileSystem.DeleteFile(destPath);
}
catch
{
// ignored
}
}
}
}
}
private SearchPattern(ref UPath path, ref string searchPattern)
{
path.AssertAbsolute();
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
_exactMatch = null;
_regexMatch = null;
// Optimized path, most common case
if (searchPattern == "*")
{
return;
}
if (searchPattern.StartsWith("/"))
{
throw new ArgumentException($"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;
}
}
}
