// WindowsPathUtils.cs
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//
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// Copyright 2007 John Reilly
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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// Linking this library statically or dynamically with other modules is
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// making a combined work based on this library. Thus, the terms and
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// conditions of the GNU General Public License cover the whole
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// combination.
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//
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// As a special exception, the copyright holders of this library give you
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// permission to link this library with independent modules to produce an
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// executable, regardless of the license terms of these independent
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// modules, and to copy and distribute the resulting executable under
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// terms of your choice, provided that you also meet, for each linked
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// independent module, the terms and conditions of the license of that
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// module. An independent module is a module which is not derived from
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// or based on this library. If you modify this library, you may extend
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// this exception to your version of the library, but you are not
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// obligated to do so. If you do not wish to do so, delete this
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// exception statement from your version.
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namespace ICSharpCode.SharpZipLib.Core
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{
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/// <summary>
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/// WindowsPathUtils provides simple utilities for handling windows paths.
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/// </summary>
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public abstract class WindowsPathUtils
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="WindowsPathUtils"/> class.
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/// </summary>
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internal WindowsPathUtils()
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{
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}
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/// <summary>
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/// Remove any path root present in the path
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/// </summary>
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/// <param name="path">A <see cref="string"/> containing path information.</param>
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/// <returns>The path with the root removed if it was present; path otherwise.</returns>
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/// <remarks>Unlike the <see cref="System.IO.Path"/> class the path isnt otherwise checked for validity.</remarks>
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public static string DropPathRoot(string path)
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{
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string result = path;
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if ( (path != null) && (path.Length > 0) ) {
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if ((path[0] == '\\') || (path[0] == '/')) {
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// UNC name ?
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if ((path.Length > 1) && ((path[1] == '\\') || (path[1] == '/'))) {
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int index = 2;
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int elements = 2;
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// Scan for two separate elements \\machine\share\restofpath
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while ((index <= path.Length) &&
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(((path[index] != '\\') && (path[index] != '/')) || (--elements > 0))) {
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index++;
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}
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index++;
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if (index < path.Length) {
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result = path.Substring(index);
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}
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else {
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result = "";
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}
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}
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}
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else if ((path.Length > 1) && (path[1] == ':')) {
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int dropCount = 2;
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if ((path.Length > 2) && ((path[2] == '\\') || (path[2] == '/'))) {
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dropCount = 3;
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}
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result = result.Remove(0, dropCount);
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}
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}
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return result;
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}
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}
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}
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