Option to export HDL files from CLI

[pcornier]

I think it would be a nice idea to add the possibility to export to HDL from the CLI. It would allow the integration of Digital in Makefile or build scripts.

[pcornier]

I did a quick test with Verilog and it seems to work. Since I'm not a Java developer, I'm not sure about integrating VHDL and providing test coverage, so I'm not going to create a PR.

File: src/main/java/de/neemann/digital/cli/HDLExport.java

package de.neemann.digital.cli;
import de.neemann.digital.hdl.verilog2.VerilogGenerator;
import de.neemann.digital.cli.cli.Argument;
import de.neemann.digital.cli.cli.CLIException;
import de.neemann.digital.cli.cli.BasicCommand;
import de.neemann.digital.hdl.printer.CodePrinter;
import java.io.File;
import java.io.IOException;

public class HDLExport extends BasicCommand {
    private final Argument<String> digFile;
    private final Argument<String> verilogFile;

    public HDLExport() {
        super("hdl");
        digFile = addArgument(new Argument<>("dig", "", false));
        verilogFile = addArgument(new Argument<>("verilog", "", true));
    }

    @Override
    public void execute() throws CLIException {
        String digFilePath = digFile.get();
        String verilogFilePath = verilogFile.get();
        File verilogFile = new File(verilogFilePath);
        try {
            CircuitLoader circuitLoader = new CircuitLoader(digFilePath, false);
            VerilogGenerator verilogGenerator = new VerilogGenerator(circuitLoader.getLibrary(), new CodePrinter(verilogFile));
            verilogGenerator.export(circuitLoader.getCircuit());
            System.out.println("Verilog export completed successfully.");
        } catch (IOException e) {
            throw new CLIException("Failed to export Verilog: " + e.getMessage(), e);
        }
    }
}

[hneemann]

Good idea!