DBC parser initial commit.

main.cpp

@@ -0,0 +1,99 @@
+#include <iostream>
+#include <memory>
+#include <cstddef>
+
+#include "dbc_parser.h"
+#include "dbc_tree_builder.h"
+#include "tree_node.h"
+
+static void PrintReceivers (const std::vector<std::string> &receivers) {
+  for (std::size_t index = 0U; index < receivers.size(); ++index) {
+    if (index != 0U)
+      std::cout << ",";
+
+    std::cout << receivers[index];
+  }
+}
+
+static void PrintTree (const TreeNode *node, int indent) {
+  if (node == nullptr)
+    return;
+
+  for (int i = 0; i < indent; ++i)
+    std::cout << "  ";
+
+  switch (node->GetType()) {
+    case NodeType::Root:
+      std::cout << "[root] " << node->GetName() << "\n";
+      break;
+
+    case NodeType::Frame: {
+      const FrameInfo *frame = node->GetFrame();
+      std::cout << "[frame] " << node->GetName();
+
+      if (frame != nullptr) {
+        std::cout << " id=" << frame->canId
+                  << " dlc=" << static_cast<unsigned int> (frame->dlc)
+                  << " tx=" << frame->transmitter;
+
+        if (frame->hasPgn)
+          std::cout << " pgn=" << frame->pgn;
+
+        if (!frame->comment.empty())
+          std::cout << " comment=\"" << frame->comment << "\"";
+      }
+
+      std::cout << "\n";
+      break;
+    }
+
+    case NodeType::Signal: {
+      const SignalInfo *signal = node->GetSignal();
+      std::cout << "[signal] " << node->GetName();
+
+      if (signal != nullptr) {
+        std::cout << " start=" << signal->startBit
+                  << " len=" << signal->length
+                  << " unit=" << signal->unit
+                  << " rx=";
+
+        PrintReceivers (signal->receivers);
+
+        if (!signal->comment.empty())
+          std::cout << " comment=\"" << signal->comment << "\"";
+      }
+
+      std::cout << "\n";
+      break;
+    }
+
+    default:
+      std::cout << "[unknown]\n";
+      break;
+  }
+
+  for (std::size_t i = 0U; i < node->GetChildCount(); ++i)
+    PrintTree (node->GetChild (i), indent + 1);
+}
+
+int main (int argc, char *argv[]) {
+  if (argc < 2) {
+    std::cerr << "Usage: dbc_demo <file.dbc>\n";
+    return 1;
+  }
+
+  try {
+    DbcParser parser;
+    DbcDatabase database = parser.ParseFile (argv[1]);
+
+    DbcTreeBuilder builder;
+    std::unique_ptr<TreeNode> root = builder.Build (database);
+
+    PrintTree (root.get(), 0);
+  } catch (const std::exception &ex) {
+    std::cerr << "Error: " << ex.what() << "\n";
+    return 2;
+  }
+
+  return 0;
+}