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JBang Command Line Interface
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package dev.jbang;
import java.util.ArrayList;
import java.util.List;
import dev.jbang.cli.JBang;
import picocli.CommandLine;
public class Main {
public static void main(String... args) {
CommandLine cli = JBang.getCommandLine();
args = handleDefaultRun(cli.getCommandSpec(), args);
int exitcode = cli.execute(args);
System.exit(exitcode);
}
private static String[] handleDefaultRun(CommandLine.Model.CommandSpec spec, String[] args) {
List leadingOpts = new ArrayList<>();
List remainingArgs = new ArrayList<>();
boolean foundParam = false;
for (String arg : args) {
if (!arg.startsWith("-") || arg.equals("-") || arg.equals("--")) {
foundParam = true;
}
if (foundParam) {
remainingArgs.add(arg);
} else {
leadingOpts.add(arg);
}
}
// Check if we have a parameter and it's not the same as any of the subcommand
// names
if (!remainingArgs.isEmpty() && !spec.subcommands().containsKey(remainingArgs.get(0))
|| hasRunOpts(leadingOpts)) {
List result = new ArrayList<>();
result.add("run");
result.addAll(leadingOpts);
result.addAll(remainingArgs);
args = result.toArray(args);
}
return args;
}
private static boolean hasRunOpts(List opts) {
boolean res = opts.contains("-i") || opts.contains("--interactive")
|| opts.contains("-c") || opts.contains("--code") || opts.contains("--build-dir");
res = res || opts .stream()
.anyMatch(o -> o.startsWith("-i=") || o.startsWith("--interactive=")
|| o.startsWith("-c=") || o.startsWith("--code=") || o.startsWith("--build-dir="));
return res;
}
}
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