110 lines
4.7 KiB
C#
110 lines
4.7 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="StepReader.HeadReader"
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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 obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// 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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} |