How to use

caseInsensitiveEnumValuesAllowed

method

in

picocli.CommandLine$Model$ParserSpec

  @SuppressWarnings("unchecked")
  public Object convert(String value) throws Exception {
    String sensitivity = "case-sensitive";
    if (commandSpec.parser().caseInsensitiveEnumValuesAllowed()) {
      String upper = value.toUpperCase();
      for (Object enumConstant : type.getEnumConstants()) {
        if (upper.equals(String.valueOf(enumConstant).toUpperCase())) { return enumConstant; }
      }
      sensitivity = "case-insensitive";
    }
    try { return Enum.valueOf((Class<Enum>) type, value); }
    catch (Exception ex) {
      Enum<?>[] constants = ((Class<Enum<?>>) type).getEnumConstants();
      String[] names = new String[constants.length];
      for (int i = 0; i < names.length; i++) { names[i] = constants[i].name(); }
      throw new TypeConversionException(
        String.format("expected one of %s (%s) but was '%s'", Arrays.asList(names), sensitivity, value)); }
  }
};

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());
}

/** Sets whether the parser should ignore case when converting arguments to {@code enum} values. The default is {@code false}.
 * When set to true, for example, for an option of type <a href="https://docs.oracle.com/javase/8/docs/api/java/time/DayOfWeek.html">java.time.DayOfWeek</a>,
 * values {@code MonDaY}, {@code monday} and {@code MONDAY} are all recognized if {@code true}.
 * <p>The specified setting will be registered with this {@code CommandLine} and the full hierarchy of its
 * subcommands and nested sub-subcommands <em>at the moment this method is called</em>. Subcommands added
 * later will have the default setting. To ensure a setting is applied to all
 * subcommands, call the setter last, after adding subcommands.</p>
 * @param newValue the new setting
 * @return this {@code CommandLine} object, to allow method chaining
 * @since 3.4
 */
public CommandLine setCaseInsensitiveEnumValuesAllowed(boolean newValue) {
  getCommandSpec().parser().caseInsensitiveEnumValuesAllowed(newValue);
  for (CommandLine command : getCommandSpec().subcommands().values()) {
    command.setCaseInsensitiveEnumValuesAllowed(newValue);
  }
  return this;
}

/** Returns whether the parser should ignore case when converting arguments to {@code enum} values. The default is {@code false}.
 * @return {@code true} if enum values can be specified that don't match the {@code toString()} value of the enum constant, {@code false} otherwise;
 * e.g., for an option of type <a href="https://docs.oracle.com/javase/8/docs/api/java/time/DayOfWeek.html">java.time.DayOfWeek</a>,
 * values {@code MonDaY}, {@code monday} and {@code MONDAY} are all recognized if {@code true}.
 * @since 3.4 */
public boolean isCaseInsensitiveEnumValuesAllowed() { return getCommandSpec().parser().caseInsensitiveEnumValuesAllowed(); }

@Test
public void testCommandSpecParserSetter() {
  CommandSpec spec = CommandSpec.wrapWithoutInspection(null);
  ParserSpec old = spec.parser();
  assertSame(old, spec.parser());
  assertFalse(spec.parser().collectErrors());
  assertFalse(spec.parser().caseInsensitiveEnumValuesAllowed());
  ParserSpec update = new ParserSpec().collectErrors(true).caseInsensitiveEnumValuesAllowed(true);
  spec.parser(update);
  assertSame(old, spec.parser());
  assertTrue(spec.parser().collectErrors());
  assertTrue(spec.parser().caseInsensitiveEnumValuesAllowed());
}

/** Returns whether the parser should ignore case when converting arguments to {@code enum} values. The default is {@code false}.
 * @return {@code true} if enum values can be specified that don't match the {@code toString()} value of the enum constant, {@code false} otherwise;
 * e.g., for an option of type <a href="https://docs.oracle.com/javase/8/docs/api/java/time/DayOfWeek.html">java.time.DayOfWeek</a>,
 * values {@code MonDaY}, {@code monday} and {@code MONDAY} are all recognized if {@code true}.
 * @since 3.4 */
public boolean isCaseInsensitiveEnumValuesAllowed() { return getCommandSpec().parser().caseInsensitiveEnumValuesAllowed(); }

@Test
public void testCommandSpecParserSetter() {
  CommandSpec spec = CommandSpec.wrapWithoutInspection(null);
  ParserSpec old = spec.parser();
  assertSame(old, spec.parser());
  assertFalse(spec.parser().collectErrors());
  assertFalse(spec.parser().caseInsensitiveEnumValuesAllowed());
  ParserSpec update = new ParserSpec().collectErrors(true).caseInsensitiveEnumValuesAllowed(true);
  spec.parser(update);
  assertSame(old, spec.parser());
  assertTrue(spec.parser().collectErrors());
  assertTrue(spec.parser().caseInsensitiveEnumValuesAllowed());
}

  @SuppressWarnings("unchecked")
  public Object convert(String value) throws Exception {
    if (commandSpec.parser().caseInsensitiveEnumValuesAllowed()) {
      String upper = value.toUpperCase();
      for (Object enumConstant : type.getEnumConstants()) {
        if (upper.equals(String.valueOf(enumConstant).toUpperCase())) { return enumConstant; }
      }
    }
    try { return Enum.valueOf((Class<Enum>) type, value); }
    catch (Exception ex) { throw new TypeConversionException(
        String.format("expected one of %s but was '%s'", Arrays.asList(type.getEnumConstants()), value)); }
  }
};

/** Sets whether the parser should ignore case when converting arguments to {@code enum} values. The default is {@code false}.
 * When set to true, for example, for an option of type <a href="https://docs.oracle.com/javase/8/docs/api/java/time/DayOfWeek.html">java.time.DayOfWeek</a>,
 * values {@code MonDaY}, {@code monday} and {@code MONDAY} are all recognized if {@code true}.
 * <p>The specified setting will be registered with this {@code CommandLine} and the full hierarchy of its
 * subcommands and nested sub-subcommands <em>at the moment this method is called</em>. Subcommands added
 * later will have the default setting. To ensure a setting is applied to all
 * subcommands, call the setter last, after adding subcommands.</p>
 * @param newValue the new setting
 * @return this {@code CommandLine} object, to allow method chaining
 * @since 3.4
 */
public CommandLine setCaseInsensitiveEnumValuesAllowed(boolean newValue) {
  getCommandSpec().parser().caseInsensitiveEnumValuesAllowed(newValue);
  for (CommandLine command : getCommandSpec().subcommands().values()) {
    command.setCaseInsensitiveEnumValuesAllowed(newValue);
  }
  return this;
}