67 lines
2.0 KiB
C#
67 lines
2.0 KiB
C#
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////////////////////////////////////////////////////////////////////////////////
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace WeChatWASM.MDV
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{
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public static class Utils
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{
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//------------------------------------------------------------------------------
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// path combine with basic normalization (reduces '.' and '..' relative paths)
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static char[] separators = new char[] { '/', '\\' };
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public static string PathCombine( string _a, string _b, string separator = "/" )
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{
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var a = (_a ?? "").Split( separators, StringSplitOptions.RemoveEmptyEntries );
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var b = (_b ?? "").Split( separators, StringSplitOptions.RemoveEmptyEntries );
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var combined = a.Concat( b ).Where( el => el != "." );
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var path = new List<string>();
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foreach( var el in combined )
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{
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if( el != ".." )
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{
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path.Add( el );
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}
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else if( path.Count > 0 )
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{
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path.RemoveAt( path.Count - 1 );
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}
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}
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return string.Join( separator, path.ToArray() );
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}
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public static string PathNormalise( string _a, string separator = "/" )
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{
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var a = (_a ?? "").Split( separators, StringSplitOptions.RemoveEmptyEntries );
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var path = new List<string>();
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foreach( var el in a )
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{
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if( el == "." )
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{
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continue;
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}
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if( el != ".." )
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{
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path.Add( el );
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}
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else if( path.Count > 0 )
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{
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path.RemoveAt( path.Count - 1 );
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}
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}
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return string.Join( separator, path.ToArray() );
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}
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}
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}
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