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    • crash.commands.base.help Maven / Gradle / Ivy

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    package crash.commands.base;

import org.crsh.cli.Command;
import org.crsh.cli.Usage;
import org.crsh.command.BaseCommand;
import org.crsh.command.InvocationContext;
import org.crsh.shell.impl.command.CRaSH;
import org.crsh.text.Color;
import org.crsh.text.Decoration;
import org.crsh.text.Style;
import org.crsh.text.ui.LabelElement;
import org.crsh.text.ui.RowElement;
import org.crsh.text.ui.TableElement;

import java.io.IOException;

/** @author Julien Viet */
public class help extends BaseCommand {

  @Usage("provides basic help")
  @Command
  public void main(InvocationContext context) throws IOException {

    //
    TableElement table = new TableElement().rightCellPadding(1);
    table.add(
        new RowElement().
            add(new LabelElement("NAME").style(Style.style(Decoration.bold))).
            add(new LabelElement("DESCRIPTION")));

    //
    CRaSH crash = (CRaSH)context.getSession().get("crash");
    Iterable names = crash.getCommandNames();
    for (String name : names) {
      try {
        String desc = crash.getCommandDescription(name);
        if (desc == null) {
          desc = "";
        }
        table.add(
            new RowElement().
                add(new LabelElement(name).style(Style.style(Color.red))).
                add(new LabelElement(desc)));
      } catch (Exception ignore) {
        //
      }
    }

    //
    context.provide(new LabelElement("Try one of these commands with the -h or --help switch:\n"));
    context.provide(table);
  }
}
    
    
    
    

    




    
    
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