113 lines
4.9 KiB
C#
113 lines
4.9 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="StepReader.HeadReader.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.Generic;
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using System.IO;
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using System.IO.MemoryMappedFiles;
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using System.Runtime.Serialization;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace StgSharp.Model.Step
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{
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public partial class StepReader
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{
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private static Regex expressionSplitter = GetStepHeadExpressionParser();
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/**/
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private StepInfo _info;
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public StepInfo GetInfo()
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{
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if( _info is not null ) {
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return _info;
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}
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StepInfo info = new StepInfo();
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List<StepHeaderLineConstructor> constructorList = new List<StepHeaderLineConstructor>();
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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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ms.Seek( _headStart, SeekOrigin.Begin );
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while( pos <= _headEnd )
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{
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string token = ReadToken( sr, ref pos );
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if( token == "HEADER;" )
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{
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continue;
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}
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if( token == "ENDSEC;" )
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{
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break;
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}
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GroupCollection match = expressionSplitter.Match( token ).Groups;
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constructorList.Add(
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new StepHeaderLineConstructor(
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0, match[ "CALLER" ].ToString(), match[ "PARAM" ].ToString() ) );
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}
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foreach( StepHeaderLineConstructor constructor in constructorList )
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{
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switch( constructor.Caller )
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{
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case "FILE_DESCRIPTION":
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info.Description = StepDataParser.ToString( constructor[ 0 ] );
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info.Level = StepDataParser.ToVersion( constructor[ 1 ] );
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break;
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case "FILE_NAME":
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info.Name = StepDataParser.ToString( constructor[ 0 ] );
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info.TimeStamp = StepDataParser.ToDateTime( constructor[ 1 ] );
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info.Author = StepDataParser.ToString( constructor[ 2 ] );
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info.Organization = StepDataParser.ToString( constructor[ 3 ] );
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info.PreprocessorVersion = StepDataParser.ToString(
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constructor[ 4 ] );
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info.OriginatingSystem = StepDataParser.ToString( constructor[ 5 ] );
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info.Authorization = StepDataParser.ToString( constructor[ 6 ] );
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break;
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default:
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break;
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}
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}
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}
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}
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return info;
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}
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[GeneratedRegex( @"^(?<CALLER>[A-Z_]+)\s?\((?<PARAM>.+)\)\;", RegexOptions.Compiled )]
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private static partial Regex GetStepHeadExpressionParser();
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/**/
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}
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} |