Build, deploy, and print a version file.

Provide a simple means by which to verify our robot is running the
correct code by deploying a version file and printing the contents to
the dashboard console when the robot is disabled.

Also ignore the version file in git.  We don't want builds reporting the
same version across commits.

STATUS: Builds.

- Justin C

Author: boxofrox

.gitignore

@@ -158,3 +158,4 @@ bin/
 
 
 # End of https://www.gitignore.io/api/c++,java,linux,macos,gradle,windows,visualstudiocode
+src/main/deploy/version.txt

Makefile

@@ -10,20 +10,4 @@ build:
 	@./gradlew build
 
 deploy: build
-	@$(make-version-file)
 	@./gradlew deploy
-	@$(clean-version-file)
-
-define make-version-file
-	cat > src/main/deploy/version.txt <<'EOF'
-	========================================
-	FRC Team 1720 - PhyXTGears
-
-	Software version: $(shell git describe --tags)
-	========================================
-	EOF
-endef
-
-define clean-version-file
-	@rm src/main/deploy/version.txt
-endef

build.gradle

@@ -2,6 +2,7 @@ plugins {
     id "cpp"
     id "google-test-test-suite"
     id "edu.wpi.first.GradleRIO" version "2019.4.1"
+    id "org.ajoberstar.grgit" version "2.3.0"
 }
 
 // Define my targets (RoboRIO) and artifacts (deployable files)
@@ -85,3 +86,18 @@ model {
         }
     }
 }
+
+task versionFile {
+    doFirst {
+        new File('src/main/deploy/version.txt').text = """
+========================================
+FRC Team 1720 - PhyXTGears
+Robot: Space Walrus
+Season: 2019
+Software version: ${grgit.describe()}
+========================================
+        """
+    }
+}
+
+tasks.getByName('deploy').dependsOn(versionFile)

src/main/cpp/Robot.cpp

@@ -132,6 +132,8 @@ void Robot::RobotPeriodic() {
 }
 
 void Robot::DisabledInit() {
+    PrintVersionFile();
+
     m_ClimbStep->Cancel();
 
     GetCreeperClimb().Disable();
@@ -450,6 +452,14 @@ void Robot::JoystickDemoIntakeHatch() {
     std::cout << "hook: b(" << bottom << ") t(" << top << ")" << std::endl;
 }
 
+void Robot::PrintVersionFile() {
+    std::ifstream versionFile("/home/lvuser/deploy/version.txt");
+
+    if (versionFile.is_open()) {
+        std::cout << versionFile.rdbuf();
+    }
+}
+
 #ifndef RUNNING_FRC_TESTS
 int main() {
     return frc::StartRobot<Robot>();

src/main/include/Robot.h

@@ -126,4 +126,7 @@ class Robot : public frc::TimedRobot {
         void JoystickDemoCreeperClimb();
         void JoystickDemoHatchCheesecake();
         void JoystickDemoIntakeHatch();
+
+        //
+        void PrintVersionFile();
 };