Encoding Function

DbcFiles/cn_test.dbc

@@ -0,0 +1,52 @@
+VERSION ""
+
+
+NS_ : 
+	NS_DESC_
+	CM_
+	BA_DEF_
+	BA_
+	VAL_
+	CAT_DEF_
+	CAT_
+	FILTER
+	BA_DEF_DEF_
+	EV_DATA_
+	ENVVAR_DATA_
+	SGTYPE_
+	SGTYPE_VAL_
+	BA_DEF_SGTYPE_
+	BA_SGTYPE_
+	SIG_TYPE_REF_
+	VAL_TABLE_
+	SIG_GROUP_
+	SIG_VALTYPE_
+	SIGTYPE_VALTYPE_
+	BO_TX_BU_
+	BA_DEF_REL_
+	BA_REL_
+	BA_DEF_DEF_REL_
+	BU_SG_REL_
+	BU_EV_REL_
+	BU_BO_REL_
+	SG_MUL_VAL_    
+
+BS_:
+
+BU_:
+
+BO_ 257 CCU_101: 8 SFAE
+ SG_ CCU_101_Chks_10_27 : 0|16@1+ (1,0) [0|65535] ""  SFAE
+ SG_ CCU_101_Msg_cnt_30_47 : 16|16@1+ (1,0) [0|65535] ""  SFAE
+ SG_ CCU_101_FL_mot_tar_tq_50_67 : 32|16@1- (0.1,0) [-3276.8|3276.7] ""  SFAE
+ SG_ CCU_101_FR_mot_tar_tq_70_87 : 48|16@1- (0.1,0) [-3276.8|3276.7] ""  SFAE
+
+CM_ BO_ 257 "CCU";
+
+CM_ SG_ 257 CCU_101_Chks_10_27 "0x101����";
+CM_ SG_ 257 CCU_101_Msg_cnt_30_47 "0x101����֡";
+CM_ SG_ 257 CCU_101_FL_mot_tar_tq_50_67 "��ǰ���Ŀ��Ť��";
+CM_ SG_ 257 CCU_101_FR_mot_tar_tq_70_87 "��ǰ���Ŀ��Ť��";
+
+BA_ "GenMsgCycleTime" BO_ 257 10;
+

DbcParserLib.Tests/ParserTests.cs

@@ -1,14 +1,16 @@
+using DbcParserLib.Model;
+using NUnit.Framework;
 using System;
 using System.Collections.Generic;
-using NUnit.Framework;
 using System.Linq;
-using DbcParserLib.Model;
+using System.Text;
 
 namespace DbcParserLib.Tests
 {
     public class ParserTests
     {
         private const string MainDbcFilePath = @"..\..\..\..\DbcFiles\tesla_can.dbc";
+        private const string CnDbcFilePath = @"..\..\..\..\DbcFiles\cn_test.dbc";
 
         [Test]
         public void SimpleParseFileTest()
@@ -22,6 +24,24 @@ public void SimpleParseFileTest()
                 Assert.That(dbc.Nodes.Count(), Is.EqualTo(15));
             });
         }
+
+        [Test]
+        public void SimpleParseFileWithEncodingTest()
+        {
+            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+            var enc = System.Text.Encoding.GetEncoding("GB18030");  
+            var dbc = Parser.ParseFromPath(CnDbcFilePath, enc); 
+            foreach (var message in dbc.Messages)
+            {
+                foreach (var signal in message.Signals)
+                {
+                    Assert.That(signal.Comment, Is.EqualTo("0x101����"));
+                    break;
+                }
+                break;
+            }
+        }
+
         [Test]
         public void ParseMessageWithStartBitGreaterThan255Test()
         {

DbcParserLib/Parser.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using DbcParserLib.Parsers;
 using DbcParserLib.Observers;
+using System.Text;
 
 namespace DbcParserLib
 {
@@ -44,10 +45,26 @@ public static Dbc ParseFromPath(string dbcPath)
                 return ParseFromStream(fileStream);
             }
         }
+
+        public static Dbc ParseFromPath(string dbcPath, Encoding encoding)
+        {
+            using (var fileStream = new FileStream(dbcPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+            {
+                return ParseFromStream(fileStream, encoding);
+            }
+        }
 
         public static Dbc ParseFromStream(Stream dbcStream)
         {
-            using(var reader = new StreamReader(dbcStream))
+            using (var reader = new StreamReader(dbcStream))
+            {
+                return ParseFromReader(reader);
+            }
+        }
+
+        public static Dbc ParseFromStream(Stream dbcStream, Encoding encoding)
+        {
+            using (var reader = new StreamReader(dbcStream, encoding))
             {
                 return ParseFromReader(reader);
             }

Demo/Form1.cs

@@ -3,6 +3,7 @@
 using System.Drawing;
 using System.IO;
 using System.Reflection;
+using System.Text;
 using System.Windows.Forms;
 using DbcParserLib;
 using DbcParserLib.Observers;
@@ -27,6 +28,8 @@ public partial class Form1 : Form
         public Form1()
         {
             InitializeComponent();
+            //Needed to support encodings other than UTF8 (e.g. GB18030), which can be the case for some dbc files, especially those from Chinese manufacturers
+            //Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);   
         }
 
         private void Form1_Load(object sender, EventArgs e)
@@ -73,8 +76,11 @@ public void LoadDbc(string filePath)
                 // Comment this line to remove parsing failure management (errors will be silent)
                 // You can provide your own IParseObserver implementation to customize parsing failure management
                 Parser.SetParsingFailuresObserver(m_failureObserver);
-                
+
                 var dbc = Parser.ParseFromPath(filePath);
+                // Comment the line above and uncomment the lines below to specify encoding (if needed, default is UTF8)
+                // var enc = Encoding.GetEncoding("GB18030");  
+                // var dbc = Parser.ParseFromPath(filePath, enc); 
                 ShowErrors();
 
                 textBoxPath.Text = filePath;