wehub-resource-sync
57 lines
2.3 KiB
C#
57 lines
2.3 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using QuantConnect.Configuration;
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using System.IO;
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using System.Runtime.CompilerServices;
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using System.Text.RegularExpressions;
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namespace QuantConnect
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{
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/// <summary>
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/// Helper methods for file management
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/// </summary>
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public static class FileExtension
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{
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/// <summary>
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/// Reserved words prefix from Configuration
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/// </summary>
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public static readonly string ReservedWordsPrefix = Config.Get("reserved-words-prefix", "@");
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private static readonly Regex ToValidWindowsPathRegex = new Regex("((?<=(\\\\|/|^))(CON|PRN|AUX|NUL|(COM[0-9])|(LPT[0-9]))(?=(\\.|\\\\|/|$)))", RegexOptions.IgnoreCase | RegexOptions.Compiled);
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private static readonly string _fixPathRegex = ReservedWordsPrefix + "$&"; // The string "$&" gets the matched word
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private static readonly bool _isWindows = OS.IsWindows;
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/// <summary>
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/// Takes a given path and (if applicable) returns a modified path accepted by
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/// Windows OS
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static string ToNormalizedPath(string path)
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{
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return _isWindows ? ToValidWindowsPathRegex.Replace(path, _fixPathRegex) : path;
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}
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/// <summary>
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/// Takes a modified path (see <see cref="ToNormalizedPath(string)"/>) and (if applicable)
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/// returns the original path proposed by LEAN
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/// </summary>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static string FromNormalizedPath(string path)
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{
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return _isWindows ? path.Replace(ReservedWordsPrefix, string.Empty) : path;
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}
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}
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}
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