How to use

expandAtFiles

method

in

picocli.CommandLine$Model$ParserSpec

private void printParser(ParserSpec parser, PrintWriter pw, String indent) {
  pw.printf("%sParserSpec:%n", indent);
  indent += "  ";
  pw.printf("%sseparator: '%s'%n", indent, parser.separator());
  pw.printf("%sendOfOptionsDelimiter: '%s'%n", indent, parser.endOfOptionsDelimiter());
  pw.printf("%sexpandAtFiles: %s%n", indent, parser.expandAtFiles());
  pw.printf("%satFileCommentChar: '%s'%n", indent, parser.atFileCommentChar());
  pw.printf("%soverwrittenOptionsAllowed: %s%n", indent, parser.overwrittenOptionsAllowed());
  pw.printf("%sunmatchedArgumentsAllowed: %s%n", indent, parser.unmatchedArgumentsAllowed());
  pw.printf("%sunmatchedOptionsArePositionalParams: %s%n", indent, parser.unmatchedOptionsArePositionalParams());
  pw.printf("%sstopAtUnmatched: %s%n", indent, parser.stopAtUnmatched());
  pw.printf("%sstopAtPositional: %s%n", indent, parser.stopAtPositional());
  pw.printf("%sposixClusteredShortOptionsAllowed: %s%n", indent, parser.posixClusteredShortOptionsAllowed());
  pw.printf("%saritySatisfiedByAttachedOptionParam: %s%n", indent, parser.aritySatisfiedByAttachedOptionParam());
  pw.printf("%scaseInsensitiveEnumValuesAllowed: %s%n", indent, parser.caseInsensitiveEnumValuesAllowed());
  pw.printf("%scollectErrors: %s%n", indent, parser.collectErrors());
  pw.printf("%slimitSplit: %s%n", indent, parser.limitSplit());
  pw.printf("%stoggleBooleanFlags: %s%n", indent, parser.toggleBooleanFlags());
}

private void addOrExpand(String arg, List<String> arguments, Set<String> visited) {
  if (config().expandAtFiles() && !arg.equals("@") && arg.startsWith("@")) {
    arg = arg.substring(1);
    if (arg.startsWith("@")) {
      if (tracer.isInfo()) { tracer.info("Not expanding @-escaped argument %s (trimmed leading '@' char)%n", arg); }
    } else {
      if (tracer.isInfo()) { tracer.info("Expanding argument file @%s%n", arg); }
      expandArgumentFile(arg, arguments, visited);
      return;
    }
  }
  arguments.add(arg);
}
private void expandArgumentFile(String fileName, List<String> arguments, Set<String> visited) {

private void addOrExpand(String arg, List<String> arguments, Set<String> visited) {
  if (config().expandAtFiles() && !arg.equals("@") && arg.startsWith("@")) {
    arg = arg.substring(1);
    if (arg.startsWith("@")) {
      if (tracer.isInfo()) { tracer.info("Not expanding @-escaped argument %s (trimmed leading '@' char)%n", arg); }
    } else {
      if (tracer.isInfo()) { tracer.info("Expanding argument file @%s%n", arg); }
      expandArgumentFile(arg, arguments, visited);
      return;
    }
  }
  arguments.add(arg);
}
private void expandArgumentFile(String fileName, List<String> arguments, Set<String> visited) {

/** Returns whether arguments starting with {@code '@'} should be treated as the path to an argument file and its
 * contents should be expanded into separate arguments for each line in the specified file.
 * This property is {@code true} by default.
 * @return whether "argument files" or {@code @files} should be expanded into their content
 * @since 2.1 */
public boolean isExpandAtFiles() { return getCommandSpec().parser().expandAtFiles(); }

/** Sets whether arguments starting with {@code '@'} should be treated as the path to an argument file and its
 * contents should be expanded into separate arguments for each line in the specified file. ({@code true} by default.)
 * @param expandAtFiles whether "argument files" or {@code @files} should be expanded into their content
 * @return this {@code CommandLine} object, to allow method chaining
 * @since 2.1 */
public CommandLine setExpandAtFiles(boolean expandAtFiles) {
  getCommandSpec().parser().expandAtFiles(expandAtFiles);
  return this;
}

/** Sets whether arguments starting with {@code '@'} should be treated as the path to an argument file and its
 * contents should be expanded into separate arguments for each line in the specified file. ({@code true} by default.)
 * @param expandAtFiles whether "argument files" or {@code @files} should be expanded into their content
 * @return this {@code CommandLine} object, to allow method chaining
 * @since 2.1 */
public CommandLine setExpandAtFiles(boolean expandAtFiles) {
  getCommandSpec().parser().expandAtFiles(expandAtFiles);
  return this;
}

/** Returns whether arguments starting with {@code '@'} should be treated as the path to an argument file and its
 * contents should be expanded into separate arguments for each line in the specified file.
 * This property is {@code true} by default.
 * @return whether "argument files" or {@code @files} should be expanded into their content
 * @since 2.1 */
public boolean isExpandAtFiles() { return getCommandSpec().parser().expandAtFiles(); }