Returns the path argument adjusted to be relative to the base path. Absolute path names will be returned unchanged. : Path « File Stream « C# / C Sharp






  1. C# / C Sharp
  2. File Stream
  3. Path

Returns the path argument adjusted to be relative to the base path. Absolute path names will be returned unchanged.

      
        
// Copyright ? Microsoft Corporation.
// This source file is subject to the Microsoft Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
// All other rights reserved.

using System;
using System.Text;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;
using System.Diagnostics;
using System.Collections.Generic;

class Util {

        /// <summary>
        /// Returns the path argument adjusted to be relative to the base path. Absolute path names will
        /// be returned unchanged.
        /// </summary>
        /// <example>
        /// path:     "xxx/aaa/target.html"
        /// basePath: "xxx/bbb/source.html"
        /// result:   "../aaa/target.html"
        /// </example>
        public static string GetRelativePath(string path, string basePath) {
            // ignore absolute path names and an empty basePath
            if (!string.IsNullOrEmpty(path) && path[0] != '/' && !string.IsNullOrEmpty(basePath)) {

                List<string> pathParts = new List<string>(path.Split('/'));
                List<string> basePathParts = new List<string>(basePath.Split('/'));

                // remove the base path file name
                if (basePathParts.Count > 0)
                    basePathParts.RemoveAt(basePathParts.Count - 1);

                // strip common base path bits
                while (pathParts.Count > 0 && basePathParts.Count > 0 &&
                    string.Equals(pathParts[0], basePathParts[0], StringComparison.CurrentCultureIgnoreCase)) {
                    pathParts.RemoveAt(0);
                    basePathParts.RemoveAt(0);
                }

                // move up one level for each remaining base path part
                foreach (string s in basePathParts)
                    pathParts.Insert(0, "..");

                path = string.Join("/", pathParts.ToArray());
            }

            return path;
        }
}








Related examples in the same category

1.Paths in C#
2.Path.GetTempFileName
3.Use static methods in Path
4.Resolve Path
5.Map Path
6.File Path Collection
7.Directory listing
8.Gets a list of files
9.Get Relative Path
10.Make Absolute Path
11.Combines two path strings.
12.Split the path into array of string
13.Get Application Relative Path
14.Performs operations on String instances that contain file or directory path information.
15.Get temp path
16.Get full path
17.Get temp file name
18.Combines two strings into a path.
19.Combines three strings into a path.
20.Combines four strings into a path.
21.Combines an array of strings into a path.
22.Get a list of invalid path characters.
23.Get a list of invalid file characters.
24.creates a relative path to "targetFile" that is relative to "path"
25.Creates a relative path from one file or folder to another.
26.Copies the specified resource to a temporary file and returns its path.
27.Is valid path name
28.Get Application Path
29.Calculate Relative Path
30.Combine paths
31.Gets the path of the current request relative to the application base path.
32.Redirects to a path relative to the application base path.
33.Gets the relative path from a source to a target path.
34.Gets the common root path of the given path list.
35.Relative Paths
36.Checks if path provided corresponds to a directory.
37.Compares two rooted paths for equality. Any of the paths provided may end with path separator - it will be ignored.
38.Combines two paths, removing root-folder combinations.
39.Combine base Path and relative Path
40.Get Execution Path
41.Get relative path (2)
42.Formats the path.
43.Gets the relative path.
44.Checks a directory path and returns a normalized form with trailing