root / trunk / Pithos.Interfaces / FileInfoExtensions.cs @ c945b450
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#region |
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/* ----------------------------------------------------------------------- |
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* <copyright file="FileInfoExtensions.cs" company="GRNet"> |
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* |
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* Copyright 2011-2012 GRNET S.A. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* |
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The views and conclusions contained in the software and |
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* documentation are those of the authors and should not be |
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* interpreted as representing official policies, either expressed |
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* or implied, of GRNET S.A. |
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* </copyright> |
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* ----------------------------------------------------------------------- |
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*/ |
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#endregion |
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using System; |
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using System.Collections.Generic; |
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using System.Diagnostics.Contracts; |
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using System.Linq; |
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using System.Text; |
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using System.IO; |
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using System.Text.RegularExpressions; |
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using System.Threading.Tasks; |
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|
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|
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namespace Pithos.Interfaces |
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{ |
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public static class FileInfoExtensions |
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{ |
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public static string AsRelativeTo(this FileSystemInfo fileInfo,string path ) |
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{ |
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if (String.IsNullOrWhiteSpace(path)) |
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throw new ArgumentNullException("path"); |
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Contract.EndContractBlock(); |
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Contract.Assume(Enum.IsDefined(typeof(StringComparison),StringComparison.InvariantCultureIgnoreCase)); |
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|
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if (!path.EndsWith("\\")) |
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path=path.ToLower() + "\\"; |
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int pathLength = path.Length; |
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|
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var filePath = fileInfo.GetProperCapitalization(); |
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|
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if (!filePath.StartsWith(path,StringComparison.InvariantCultureIgnoreCase)) |
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throw new ArgumentException(String.Format("The path {0} doesn't contain the file {1}",path,filePath)); |
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|
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var relativePath = filePath.Substring(pathLength, filePath.Length - pathLength); |
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|
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return relativePath; |
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} |
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|
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public static string AsRelativeUrlTo(this FileSystemInfo fileInfo,string path ) |
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{ |
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if (String.IsNullOrWhiteSpace(path)) |
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throw new ArgumentNullException("path"); |
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Contract.EndContractBlock(); |
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|
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var relativePath = fileInfo.AsRelativeTo(path); |
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var replacedSlashes = relativePath.Replace("\\","/"); |
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var escaped = Uri.EscapeUriString(replacedSlashes); |
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return escaped; |
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} |
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|
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public static string RelativeUriToFilePath(this Uri uri) |
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{ |
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var unescaped = Uri.UnescapeDataString(uri.ToString()); |
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var path = unescaped.Replace("/", "\\"); |
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return path; |
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} |
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|
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|
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public static string GetProperDirectoryCapitalization(string fileName) |
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{ |
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Contract.Ensures(!String.IsNullOrWhiteSpace(Contract.Result<string>())); |
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Contract.EndContractBlock(); |
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|
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if (String.IsNullOrWhiteSpace(fileName)) |
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return String.Empty; |
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|
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var dirInfo = new DirectoryInfo(fileName); |
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return dirInfo.GetProperCapitalization(); |
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} |
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|
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|
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public static string GetProperCapitalization(this DirectoryInfo dirInfo) |
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{ |
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if (dirInfo == null) |
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throw new ArgumentNullException("dirInfo"); |
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Contract.EndContractBlock(); |
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Contract.Assume(!String.IsNullOrWhiteSpace(dirInfo.FullName)); |
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|
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var parentDirInfo = dirInfo.Parent; |
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if (null == parentDirInfo) |
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return dirInfo.Name; |
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|
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try |
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{ |
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|
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dirInfo.Refresh(); |
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|
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if (dirInfo.Exists) |
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return Path.Combine(GetProperDirectoryCapitalization(parentDirInfo.FullName), |
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parentDirInfo.GetDirectories(dirInfo.Name)[0].Name); |
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else |
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{ |
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return dirInfo.FullName; |
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} |
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} |
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catch (DirectoryNotFoundException) |
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{ |
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//An exception can occur if a directory is deleted right after the Exists call |
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return dirInfo.FullName; |
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} |
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} |
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|
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|
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public static string GetProperFilePathCapitalization(string fileName) |
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{ |
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Contract.Ensures(!String.IsNullOrWhiteSpace(Contract.Result<string>())); |
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Contract.EndContractBlock(); |
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if (String.IsNullOrWhiteSpace(fileName)) |
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return String.Empty; |
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|
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|
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var fileInfo = new FileInfo(fileName); |
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return fileInfo.GetProperCapitalization(); |
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} |
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|
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public static string GetProperCapitalization(this FileInfo fileInfo) |
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{ |
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if (fileInfo == null) |
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throw new ArgumentNullException("fileInfo"); |
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Contract.EndContractBlock(); |
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|
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|
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var dirInfo = fileInfo.Directory; |
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|
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//Directory will not be null for an absolute path |
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Contract.Assume(dirInfo != null); |
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|
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try |
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{ |
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//Exists returns a cached value that can be true even if a file was deleted since the |
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//FileInfo object was created. |
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fileInfo.Refresh(); |
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if (fileInfo.Exists) |
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return Path.Combine(GetProperDirectoryCapitalization(dirInfo.FullName), |
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dirInfo.GetFiles(fileInfo.Name)[0].Name); |
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else |
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{ |
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return fileInfo.FullName; |
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} |
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} |
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catch (FileNotFoundException) |
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{ |
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//An exception can occur if a file is deleted right after the Exists call |
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return fileInfo.FullName; |
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|
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} |
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} |
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|
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public static string GetProperCapitalization(this FileSystemInfo info) |
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{ |
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if (info is FileInfo) |
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return (info as FileInfo).GetProperCapitalization(); |
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if (info is DirectoryInfo) |
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return (info as DirectoryInfo).GetProperCapitalization(); |
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throw new NotSupportedException("Unexpected parameter type"); |
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} |
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|
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public static DirectoryInfo WithProperCapitalization(this DirectoryInfo dirInfo) |
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{ |
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if (dirInfo==null) |
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throw new ArgumentNullException("dirInfo"); |
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Contract.EndContractBlock(); |
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|
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var path = dirInfo.GetProperCapitalization(); |
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return new DirectoryInfo(path); |
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} |
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|
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public static FileInfo WithProperCapitalization(this FileInfo fileInfo) |
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{ |
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if (fileInfo==null) |
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throw new ArgumentNullException("fileInfo"); |
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Contract.EndContractBlock(); |
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|
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var path = fileInfo.GetProperCapitalization(); |
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return new FileInfo(path); |
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} |
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|
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public static FileSystemInfo WithProperCapitalization(this FileSystemInfo info) |
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{ |
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if (info==null) |
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throw new ArgumentNullException("info"); |
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Contract.EndContractBlock(); |
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|
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if (info is FileInfo) |
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return (info as FileInfo).WithProperCapitalization(); |
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if (info is DirectoryInfo) |
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return (info as DirectoryInfo).WithProperCapitalization(); |
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|
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throw new NotSupportedException("Unexpected parameter type"); |
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} |
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|
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public static FileSystemInfo FromPath(string filePath) |
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{ |
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if (String.IsNullOrWhiteSpace(filePath)) |
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throw new ArgumentNullException("filePath"); |
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Contract.EndContractBlock(); |
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|
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return Directory.Exists(filePath) ? |
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(FileSystemInfo) new DirectoryInfo(filePath) |
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: new FileInfo(filePath); |
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} |
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} |
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} |