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// https://duplicati.com, hello@duplicati.com
// 
// Permission is hereby granted, free of charge, to any person obtaining a 
// copy of this software and associated documentation files (the "Software"), 
// to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in 
// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
// Adapted from https://raw.githubusercontent.com/dotnet/runtime/v5.0.12/src/libraries/System.Private.CoreLib/src/System/IO/Path.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

// The MIT License (MIT)
//   
// Copyright(c).NET Foundation and Contributors
// 
// All rights reserved.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

using System;

namespace Duplicati.Library.Common.IO
{
    public static class DotNetRuntimePathWindows
    {
        /// <summary>
        /// Returns true if the path is fixed to a specific drive or UNC path. This method does no
        /// validation of the path (URIs will be returned as relative as a result).
        /// Returns false if the path specified is relative to the current drive or working directory.
        /// </summary>
        /// <remarks>
        /// Handles paths that use the alternate directory separator.  It is a frequent mistake to
        /// assume that rooted paths <see cref="Path.IsPathRooted(string)"/> are not relative.  This isn't the case.
        /// "C:a" is drive relative- meaning that it will be resolved against the current directory
        /// for C: (rooted, but relative). "C:\a" is rooted and not relative (the current directory
        /// will not be used to modify the path).
        /// </remarks>
        /// <exception cref="ArgumentNullException">
        /// Thrown if <paramref name="path"/> is null.
        /// </exception>
        public static bool IsPathFullyQualified(string path)
        {
            if (path == null)
                throw new ArgumentNullException(nameof(path));

            return !PathInternalWindows.IsPartiallyQualified(path);
        }
    }
}