91 lines
3.7 KiB
C#
91 lines
3.7 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="StepDataReader.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using System.IO.MemoryMappedFiles;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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namespace StgSharp.Modeling.STEP
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{
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public partial class StepReader
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{
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private Regex expressionSpilitter = GetExpressionSplitter();
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private ThreadLocal<ConcurrentQueue<StepCodeLine>> _codeLineQueue
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= new ThreadLocal<ConcurrentQueue<StepCodeLine>>();
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public ConcurrentQueue<StepCodeLine> DataSectionPool
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{
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get => _codeLineQueue.Value;
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}
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public void ReadDataSection()
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{
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if( _codeLineQueue.Value == null ) {
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_codeLineQueue.Value = new ConcurrentQueue<StepCodeLine>();
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}
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using( MemoryMappedViewStream ms = _memoryFile.CreateViewStream(
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0, _size, MemoryMappedFileAccess.Read ) )
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{
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using( StreamReader sr = new StreamReader( ms ) )
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{
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long pos = _headStart;
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string line;
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while( string.IsNullOrEmpty( line = sr.ReadLine()! ) )
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{
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Match match = expressionSpilitter.Match( line );
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if( match.Success )
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{
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int id = int.Parse( match.Groups[ "id" ].Value );
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string expression = match.Groups[ "expression" ].Value;
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StepCodeLine stepExpression = new StepCodeLine( id, expression );
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_codeLineQueue.Value.Enqueue( stepExpression );
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}
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}
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}
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}
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}
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[GeneratedRegex(
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@"^#(?<id>[0-9]+)\s*?=\s*?(?<expression>\S.*?)\s*;$",
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RegexOptions.Compiled | RegexOptions.Singleline )]
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private static partial Regex GetExpressionSplitter();
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}
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}
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