add from giga-device, new branch added

2025-08-21 16:51:25 +08:00
commit 43bbc06bbb
1296 changed files with 264186 additions and 0 deletions
@@ -0,0 +1,113 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="StepReader.HeadReader.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. 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;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.MemoryMappedFiles;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace StgSharp.Model.Step
+{
+    public partial class StepReader
+    {
+
+        private static Regex expressionSplitter = GetStepHeadExpressionParser();
+        /**/
+        private StepInfo _info;
+
+        public StepInfo GetInfo()
+        {
+            if( _info is not null ) {
+                return _info;
+            }
+            StepInfo info = new StepInfo();
+            List<StepHeaderLineConstructor> constructorList = new List<StepHeaderLineConstructor>();
+            using( MemoryMappedViewStream ms = _memoryFile.CreateViewStream(
+                0, _size, MemoryMappedFileAccess.Read ) )
+            {
+                using( StreamReader sr = new StreamReader( ms ) )
+                {
+                    long pos = _headStart;
+                    ms.Seek( _headStart, SeekOrigin.Begin );
+                    while( pos <= _headEnd )
+                    {
+                        string token = ReadToken( sr, ref pos );
+                        if( token == "HEADER;" )
+                        {
+                            continue;
+                        }
+
+                        if( token == "ENDSEC;" )
+                        {
+                            break;
+                        }
+
+                        GroupCollection match = expressionSplitter.Match( token ).Groups;
+                        constructorList.Add(
+                            new StepHeaderLineConstructor(
+                                0, match[ "CALLER" ].ToString(), match[ "PARAM" ].ToString() ) );
+                    }
+                    foreach( StepHeaderLineConstructor constructor in constructorList )
+                    {
+                        switch( constructor.Caller )
+                        {
+                            case "FILE_DESCRIPTION":
+                                info.Description = StepDataParser.ToString( constructor[ 0 ] );
+                                info.Level = StepDataParser.ToVersion( constructor[ 1 ] );
+                                break;
+                            case "FILE_NAME":
+                                info.Name = StepDataParser.ToString( constructor[ 0 ] );
+                                info.TimeStamp = StepDataParser.ToDateTime( constructor[ 1 ] );
+                                info.Author = StepDataParser.ToString( constructor[ 2 ] );
+                                info.Organization = StepDataParser.ToString( constructor[ 3 ] );
+                                info.PreprocessorVersion = StepDataParser.ToString(
+                                    constructor[ 4 ] );
+                                info.OriginatingSystem = StepDataParser.ToString( constructor[ 5 ] );
+                                info.Authorization = StepDataParser.ToString( constructor[ 6 ] );
+                                break;
+                            default:
+                                break;
+                        }
+                    }
+                }
+            }
+            return info;
+        }
+
+        [GeneratedRegex( @"^(?<CALLER>[A-Z_]+)\s?\((?<PARAM>.+)\)\;", RegexOptions.Compiled )]
+        private static partial Regex GetStepHeadExpressionParser();
+        /**/
+
+    }
+}