Refactor of previous commit to bring DBC functionality to its own class. Also, some misc bug fixing.

dbchandler.cpp

@@ -0,0 +1,157 @@
+#include "dbchandler.h"
+
+#include <QFile>
+#include <QRegularExpression>
+#include <QDebug>
+
+DBCHandler::DBCHandler(QObject *parent) : QObject(parent)
+{
+
+}
+
+void DBCHandler::loadDBCFile(QString filename)
+{
+    QFile *inFile = new QFile(filename);
+    QString line;
+    QRegularExpression regex;
+    QRegularExpressionMatch match;
+
+    qDebug() << "DBC File: " << filename;
+
+    if (!inFile->open(QIODevice::ReadOnly | QIODevice::Text))
+        return;
+
+    qDebug() << "Starting DBC load";
+
+    while (!inFile->atEnd()) {
+        line = QString(inFile->readLine().toUpper().simplified());
+        if (line.startsWith("BO_ "))
+        {
+            qDebug() << "Found a BO line";
+            regex.setPattern("^BO\\_ (\\w+) (\\w+) *: (\\w+) (\\w+)");
+            match = regex.match(line);
+            //captured 1 = the ID in decimal
+            //captured 2 = The message name
+            //captured 3 = the message length
+            //captured 4 = the NODE responsible for this message
+            if (match.hasMatch())
+            {
+            }
+        }
+        if (line.startsWith("SG_ "))
+        {
+            qDebug() << "Found a SG line";
+            regex.setPattern("^SG\\_ (\\w+) : (\\d+)\\|(\\d+)@(\\d+)([\\+|\\-]) \\(([0-9.+\\-eE]+),([0-9.+\\-eE]+)\\) \\[([0-9.+\\-eE]+)\\|([0-9.+\\-eE]+)\\] \\\"(.*)\\\" (.*)");
+            match = regex.match(line);
+            //captured 1 is the signal name
+            //captured 2 is the starting bit
+            //captured 3 is the length in bits
+            //captured 4 is the byte order / value type
+            //captured 5 specifies signed/unsigned for ints
+            //captured 6 is the scaling factor
+            //captured 7 is the offset
+            //captured 8 is the minimum value
+            //captured 9 is the maximum value
+            //captured 10 is the unit
+            //captured 11 is the receiving node
+
+            if (match.hasMatch())
+            {
+            }
+        }
+        if (line.startsWith("BU_:"))
+        {
+            qDebug() << "Found a BU line";
+            regex.setPattern("^BU\\_\\:(.*)");
+            match = regex.match(line);
+            //captured 1 = a list of node names separated by spaces. No idea how many yet
+            if (match.hasMatch())
+            {
+                QStringList nodeStrings = match.captured(1).split(' ');
+                qDebug() << "Found " << nodeStrings.count() << " node names";
+                for (int i = 0; i < nodeStrings.count(); i++)
+                {
+                    qDebug() << nodeStrings[i];
+                }
+            }
+        }
+        if (line.startsWith("CM_ SG_ "))
+        {
+            qDebug() << "Found an SG comment line";
+            regex.setPattern("^CM\\_ SG\\_ *(\\w+) *(\\w+) *\\\"(.*)\\\";");
+            match = regex.match(line);
+            //captured 1 is the ID to match against to get to the message
+            //captured 2 is the signal name from that message
+            //captured 3 is the comment itself
+            if (match.hasMatch())
+            {
+                qDebug() << "Comment was: " << match.captured(3);
+            }
+        }
+        if (line.startsWith("CM_ BO_ "))
+        {
+            qDebug() << "Found a BO comment line";
+            regex.setPattern("^CM\\_ BO\\_ *(\\w+) *\\\"(.*)\\\";");
+            match = regex.match(line);
+            //captured 1 is the ID to match against to get to the message
+            //captured 2 is the comment itself
+            if (match.hasMatch())
+            {
+                qDebug() << "Comment was: " << match.captured(2);
+            }
+
+        }
+        if (line.startsWith("CM_ BU_ "))
+        {
+            qDebug() << "Found a BU comment line";
+            regex.setPattern("^CM\\_ BU\\_ *(\\w+) *\\\"(.*)\\\";");
+            match = regex.match(line);
+            //captured 1 is the Node name
+            //captured 2 is the comment itself
+            if (match.hasMatch())
+            {
+                qDebug() << "Comment was: " << match.captured(2);
+            }
+        }
+        //VAL_ (1090) (VCUPresentParkLightOC) (1 "Error present" 0 "Error not present") ;
+        if (line.startsWith("VAL_ "))
+        {
+            qDebug() << "Found a value definition line";
+            regex.setPattern("^VAL\\_ (\\w+) (\\w+) (.*);");
+            match = regex.match(line);
+            //captured 1 is the ID to match against
+            //captured 2 is the signal name to match against
+            //captured 3 is a series of values in the form (number "text") that is, all sep'd by spaces
+            if (match.hasMatch())
+            {
+                qDebug() << "Data was: " << match.captured(3);
+            }
+        }
+
+        /*
+        if (line.startsWith("BA_DEF_ SG_ "))
+        {
+            qDebug() << "Found a SG attribute line";
+            regex.setPattern("^BA\\_DEF\\_ SG\\_ +\\\"([A-Za-z0-9\-_]+)\\\" +(.+);");
+            match = regex.match(line);
+            //captured 1 is the Node name
+            //captured 2 is the comment itself
+            if (match.hasMatch())
+            {
+                qDebug() << "Comment was: " << match.captured(2);
+            }
+        }
+        if (line.startsWith("BA_DEF_ BO_ "))
+        {
+
+        }
+        if (line.startsWith("BA_DEF_ BU_ "))
+        {
+
+        }
+*/
+
+
+    }
+    inFile->close();
+}