java.lang.Object
- picocli.CommandLine.Model.UsageMessageSpec

Enclosing class:: CommandLine.Model

public static class CommandLine.Model.UsageMessageSpec
extends Object

Models the usage help message specification and can be used to customize the usage help message.

This class provides two ways to customize the usage help message:

Change the text of the predefined sections (this may also be done declaratively using the annotations)
Add custom sections, or remove or re-order predefined sections

The pre-defined sections have getters and setters that return a String (or array of Strings). For example: description() and description(String...) or header() and header(String...).

Changing the section order, or adding custom sections can be accomplished with sectionKeys(List) and sectionMap(Map). This gives complete freedom on how a usage help message section is rendered, but it also means that the section renderer is responsible for all aspects of rendering the section, including layout and emitting ANSI escape codes. The CommandLine.Help.TextTable and CommandLine.Help.Ansi.Text classes, and the CommandLine.Help.Ansi.string(String) and CommandLine.Help.Ansi.text(String) methods may be useful.

The usage help message is created more or less like this:

 // CommandLine.usage(...) or CommandLine.getUsageMessage(...)
 Help.ColorScheme colorScheme = Help.defaultColorScheme(Help.Ansi.AUTO);
 Help help = getHelpFactory().create(getCommandSpec(), colorScheme)
 StringBuilder result = new StringBuilder();
 for (String key : getHelpSectionKeys()) {
     IHelpSectionRenderer renderer = getHelpSectionMap().get(key);
     if (renderer != null) { result.append(renderer.render(help)); }
 }
 // return or print result

Where the default help section map is constructed like this:


 // The default section renderers delegate to methods in Help for their implementation
 // (using Java 8 lambda notation for brevity):
 Map<String, IHelpSectionRenderer> sectionMap = new HashMap<>();
 sectionMap.put(SECTION_KEY_HEADER_HEADING,         help -> help.headerHeading());
 sectionMap.put(SECTION_KEY_HEADER,                 help -> help.header());
 sectionMap.put(SECTION_KEY_SYNOPSIS_HEADING,       help -> help.synopsisHeading());      //e.g. Usage:
 sectionMap.put(SECTION_KEY_SYNOPSIS,               help -> help.synopsis(help.synopsisHeadingLength())); //e.g. <cmd> [OPTIONS] <subcmd> [COMMAND-OPTIONS] [ARGUMENTS]
 sectionMap.put(SECTION_KEY_DESCRIPTION_HEADING,    help -> help.descriptionHeading());   //e.g. %nDescription:%n%n
 sectionMap.put(SECTION_KEY_DESCRIPTION,            help -> help.description());          //e.g. {"Converts foos to bars.", "Use options to control conversion mode."}
 sectionMap.put(SECTION_KEY_PARAMETER_LIST_HEADING, help -> help.parameterListHeading()); //e.g. %nPositional parameters:%n%n
 sectionMap.put(SECTION_KEY_PARAMETER_LIST,         help -> help.parameterList());        //e.g. [FILE...] the files to convert
 sectionMap.put(SECTION_KEY_OPTION_LIST_HEADING,    help -> help.optionListHeading());    //e.g. %nOptions:%n%n
 sectionMap.put(SECTION_KEY_OPTION_LIST,            help -> help.optionList());           //e.g. -h, --help   displays this help and exits
 sectionMap.put(SECTION_KEY_COMMAND_LIST_HEADING,   help -> help.commandListHeading());   //e.g. %nCommands:%n%n
 sectionMap.put(SECTION_KEY_COMMAND_LIST,           help -> help.commandList());          //e.g.    add       adds the frup to the frooble
 sectionMap.put(SECTION_KEY_EXIT_CODE_LIST_HEADING, help -> help.exitCodeListHeading());
 sectionMap.put(SECTION_KEY_EXIT_CODE_LIST,         help -> help.exitCodeList());
 sectionMap.put(SECTION_KEY_FOOTER_HEADING,         help -> help.footerHeading());
 sectionMap.put(SECTION_KEY_FOOTER,                 help -> help.footer());

Since:: 3.0

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`DEFAULT_USAGE_WIDTH`	Constant holding the default usage message width: `80`.
`static String`	`SECTION_KEY_AT_FILE_PARAMETER`	Section key to control the section renderer for the @-file parameter list section.
`static String`	`SECTION_KEY_COMMAND_LIST`	Section key to control the section renderer for the Subcommand List section.
`static String`	`SECTION_KEY_COMMAND_LIST_HEADING`	Section key to control the section renderer for the Subcommand List Heading section.
`static String`	`SECTION_KEY_DESCRIPTION`	Section key to control the section renderer for the Description section.
`static String`	`SECTION_KEY_DESCRIPTION_HEADING`	Section key to control the section renderer for the Description Heading section.
`static String`	`SECTION_KEY_END_OF_OPTIONS`	Section key to control the section renderer for the `--` End of Options list section.
`static String`	`SECTION_KEY_EXIT_CODE_LIST`	Section key to control the section renderer for the Exit Code List section.
`static String`	`SECTION_KEY_EXIT_CODE_LIST_HEADING`	Section key to control the section renderer for the Exit Code List Heading section.
`static String`	`SECTION_KEY_FOOTER`	Section key to control the section renderer for the Footer section.
`static String`	`SECTION_KEY_FOOTER_HEADING`	Section key to control the section renderer for the Footer Heading section.
`static String`	`SECTION_KEY_HEADER`	Section key to control the section renderer for the Header section.
`static String`	`SECTION_KEY_HEADER_HEADING`	Section key to control the section renderer for the Header Heading section.
`static String`	`SECTION_KEY_OPTION_LIST`	Section key to control the section renderer for the Option List section.
`static String`	`SECTION_KEY_OPTION_LIST_HEADING`	Section key to control the section renderer for the Option List Heading section.
`static String`	`SECTION_KEY_PARAMETER_LIST`	Section key to control the section renderer for the Parameter List section.
`static String`	`SECTION_KEY_PARAMETER_LIST_HEADING`	Section key to control the section renderer for the Parameter List Heading section.
`static String`	`SECTION_KEY_SYNOPSIS`	Section key to control the section renderer for the Synopsis section.
`static String`	`SECTION_KEY_SYNOPSIS_HEADING`	Section key to control the section renderer for the Synopsis Heading section.

Constructor Summary

Constructors
Constructor Description

UsageMessageSpec()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`abbreviateSynopsis()`	Returns whether the synopsis line(s) should show an abbreviated synopsis without detailed option names.
`CommandLine.Model.UsageMessageSpec`	`abbreviateSynopsis(boolean newValue)`	Sets whether the synopsis line(s) should show an abbreviated synopsis without detailed option names.
`boolean`	`adjustLineBreaksForWideCJKCharacters()`	Returns whether line breaks should take wide Chinese, Japanese and Korean characters into account for line-breaking purposes.
`CommandLine.Model.UsageMessageSpec`	`adjustLineBreaksForWideCJKCharacters(boolean adjustForWideChars)`	Sets whether line breaks should take wide Chinese, Japanese and Korean characters into account, and returns this UsageMessageSpec.
`boolean`	`autoWidth()`	Returns whether picocli should attempt to detect the terminal size and adjust the usage help message width to take the full terminal width.
`CommandLine.Model.UsageMessageSpec`	`autoWidth(boolean detectTerminalSize)`	Sets whether picocli should attempt to detect the terminal size and adjust the usage help message width to take the full terminal width.
`String`	`commandListHeading()`	Returns the optional heading preceding the subcommand list.
`CommandLine.Model.UsageMessageSpec`	`commandListHeading(String newValue)`	Sets the optional heading preceding the subcommand list.
`String[]`	`customSynopsis()`	Returns the optional custom synopsis lines to use instead of the auto-generated synopsis.
`CommandLine.Model.UsageMessageSpec`	`customSynopsis(String... customSynopsis)`	Sets the optional custom synopsis lines to use instead of the auto-generated synopsis.
`String[]`	`description()`	Returns the optional text lines to use as the description of the help message, displayed between the synopsis and the options list.
`CommandLine.Model.UsageMessageSpec`	`description(String... description)`	Sets the optional text lines to use as the description of the help message, displayed between the synopsis and the options list.
`String`	`descriptionHeading()`	Returns the optional heading preceding the description section.
`CommandLine.Model.UsageMessageSpec`	`descriptionHeading(String newValue)`	Sets the heading preceding the description section.
`Map<String,String>`	`exitCodeList()`	Returns an unmodifiable map with values to be displayed in the exit codes section: keys are exit codes, values are descriptions.
`CommandLine.Model.UsageMessageSpec`	`exitCodeList(Map<String,String> newValue)`	Sets the values to be displayed in the exit codes section: keys are exit codes, values are descriptions.
`String`	`exitCodeListHeading()`	Returns the optional heading preceding the exit codes section, may contain `"%n"` line separators.
`CommandLine.Model.UsageMessageSpec`	`exitCodeListHeading(String newValue)`	Sets the optional heading preceding the exit codes section, may contain `"%n"` line separators.
`String[]`	`footer()`	Returns the optional footer text lines displayed at the bottom of the help message.
`CommandLine.Model.UsageMessageSpec`	`footer(String... footer)`	Sets the optional footer text lines displayed at the bottom of the help message.
`String`	`footerHeading()`	Returns the optional heading preceding the footer section.
`CommandLine.Model.UsageMessageSpec`	`footerHeading(String newValue)`	Sets the optional heading preceding the footer section.
`String[]`	`header()`	Returns the optional header lines displayed at the top of the help message.
`CommandLine.Model.UsageMessageSpec`	`header(String... header)`	Sets the optional header lines displayed at the top of the help message.
`String`	`headerHeading()`	Returns the optional heading preceding the header section.
`CommandLine.Model.UsageMessageSpec`	`headerHeading(String headerHeading)`	Sets the heading preceding the header section.
`CommandLine.IHelpFactory`	`helpFactory()`	Returns the `IHelpFactory` that is used to construct the usage help message.
`CommandLine.Model.UsageMessageSpec`	`helpFactory(CommandLine.IHelpFactory helpFactory)`	Sets a new `IHelpFactory` to customize the usage help message.
`boolean`	`hidden()`	Returns whether this command should be hidden from the usage help message of the parent command.
`CommandLine.Model.UsageMessageSpec`	`hidden(boolean value)`	Set the hidden flag on this command to control whether to show or hide it in the help usage text of the parent command.
`static Map<String,String>`	`keyValuesMap(String... entries)`	Creates and returns a `Map` that contains an entry for each specified String that is in `"key:value"` format.
`int`	`longOptionsMaxWidth()`	Returns the maximum usage help long options column max width to the specified value.
`CommandLine.Model.UsageMessageSpec`	`longOptionsMaxWidth(int newValue)`	Sets the maximum usage help long options column max width to the specified value.
`CommandLine.Model.Messages`	`messages()`	Returns the Messages for this usage help message specification, or `null`.
`CommandLine.Model.UsageMessageSpec`	`messages(CommandLine.Model.Messages msgs)`	Sets the Messages for this usageMessage specification, and returns this UsageMessageSpec.
`String`	`optionListHeading()`	Returns the optional heading preceding the options list.
`CommandLine.Model.UsageMessageSpec`	`optionListHeading(String newValue)`	Sets the heading preceding the options list.
`String`	`parameterListHeading()`	Returns the optional heading preceding the parameter list.
`CommandLine.Model.UsageMessageSpec`	`parameterListHeading(String newValue)`	Sets the optional heading preceding the parameter list.
`char`	`requiredOptionMarker()`	Returns the character used to prefix required options in the options list.
`CommandLine.Model.UsageMessageSpec`	`requiredOptionMarker(char newValue)`	Sets the character used to prefix required options in the options list.
`List<String>`	`sectionKeys()`	Returns the section keys in the order that the usage help message should render the sections.
`CommandLine.Model.UsageMessageSpec`	`sectionKeys(List<String> keys)`	Sets the section keys in the order that the usage help message should render the sections.
`Map<String,CommandLine.IHelpSectionRenderer>`	`sectionMap()`	Returns the map of section keys and renderers used to construct the usage help message.
`CommandLine.Model.UsageMessageSpec`	`sectionMap(Map<String,CommandLine.IHelpSectionRenderer> map)`	Sets the map of section keys and renderers used to construct the usage help message to a copy of the specified map.
`boolean`	`showAtFileInUsageHelp()`	Sets whether to show a `[@<filename>...]` entry in the synopsis and parameter list of the usage help message.
`CommandLine.Model.UsageMessageSpec`	`showAtFileInUsageHelp(boolean newValue)`	Sets whether to show a `[@<filename>...]` entry in the synopsis and parameter list of the usage help message.
`boolean`	`showDefaultValues()`	Returns whether the options list in the usage help message should show default values for all non-boolean options.
`CommandLine.Model.UsageMessageSpec`	`showDefaultValues(boolean newValue)`	Sets whether the options list in the usage help message should show default values for all non-boolean options.
`boolean`	`showEndOfOptionsDelimiterInUsageHelp()`	Sets whether to show a `[--]` (End of Options) entry in the synopsis and options list of the usage help message.
`CommandLine.Model.UsageMessageSpec`	`showEndOfOptionsDelimiterInUsageHelp(boolean newValue)`	Sets whether to show a `[--]` (End of Options) entry in the synopsis and options list of the usage help message.
`boolean`	`sortOptions()`	Returns whether the options list in the usage help message should be sorted alphabetically.
`CommandLine.Model.UsageMessageSpec`	`sortOptions(boolean newValue)`	Sets whether the options list in the usage help message should be sorted alphabetically.
`double`	`synopsisAutoIndentThreshold()`	Returns the fraction of the usage help `width()` that is the threshold up to which the 2nd line and subsequent lines of a multi-line synopsis should be aligned to the end of the command name.
`CommandLine.Model.UsageMessageSpec`	`synopsisAutoIndentThreshold(double newValue)`	Sets the fraction of the usage help `width()` that is the threshold up to which the 2nd line and subsequent lines of a multi-line synopsis should be aligned to the end of the command name.
`String`	`synopsisHeading()`	Returns the optional heading preceding the synopsis.
`CommandLine.Model.UsageMessageSpec`	`synopsisHeading(String newValue)`	Sets the optional heading preceding the synopsis.
`int`	`synopsisIndent()`	Returns the indentation to use on the 2nd line and subsequent lines of a multi-line synopsis when the length of the synopsis heading and the fully qualified command name exceed the `width()` times the `synopsisAutoIndentThreshold()`, `-1` by default.
`CommandLine.Model.UsageMessageSpec`	`synopsisIndent(int newValue)`	Sets the indentation to use on the 2nd line and subsequent lines of a multi-line synopsis when the length of the synopsis heading and the fully qualified command name exceed the `synopsisAutoIndentThreshold()` fraction of the `width()`, `-1` by default.
`String`	`synopsisSubcommandLabel()`	Returns the String representing the subcommands in the synopsis.
`CommandLine.Model.UsageMessageSpec`	`synopsisSubcommandLabel(String newValue)`	Sets the String representing the subcommands in the synopsis.
`int`	`width()`	Returns the maximum usage help message width.
`CommandLine.Model.UsageMessageSpec`	`width(int newValue)`	Sets the maximum usage help message width to the specified value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - SECTION_KEY_HEADER_HEADING
```
public static final String SECTION_KEY_HEADER_HEADING
```
    Section key to control the section renderer for the Header Heading section. The default renderer for this section calls CommandLine.Help.headerHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_HEADER
```
public static final String SECTION_KEY_HEADER
```
    Section key to control the section renderer for the Header section. The default renderer for this section calls CommandLine.Help.header(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_SYNOPSIS_HEADING
```
public static final String SECTION_KEY_SYNOPSIS_HEADING
```
    Section key to control the section renderer for the Synopsis Heading section. The default renderer for this section calls CommandLine.Help.synopsisHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_SYNOPSIS
```
public static final String SECTION_KEY_SYNOPSIS
```
    Section key to control the section renderer for the Synopsis section. The default renderer for this section calls CommandLine.Help.synopsis(int).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_DESCRIPTION_HEADING
```
public static final String SECTION_KEY_DESCRIPTION_HEADING
```
    Section key to control the section renderer for the Description Heading section. The default renderer for this section calls CommandLine.Help.descriptionHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_DESCRIPTION
```
public static final String SECTION_KEY_DESCRIPTION
```
    Section key to control the section renderer for the Description section. The default renderer for this section calls CommandLine.Help.description(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_PARAMETER_LIST_HEADING
```
public static final String SECTION_KEY_PARAMETER_LIST_HEADING
```
    Section key to control the section renderer for the Parameter List Heading section. The default renderer for this section calls CommandLine.Help.parameterListHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_AT_FILE_PARAMETER
```
public static final String SECTION_KEY_AT_FILE_PARAMETER
```
    Section key to control the section renderer for the @-file parameter list section. The default renderer for this section calls CommandLine.Help.atFileParameterList().
    
    Since:
    
    4.2
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_PARAMETER_LIST
```
public static final String SECTION_KEY_PARAMETER_LIST
```
    Section key to control the section renderer for the Parameter List section. The default renderer for this section calls CommandLine.Help.parameterList().
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_OPTION_LIST_HEADING
```
public static final String SECTION_KEY_OPTION_LIST_HEADING
```
    Section key to control the section renderer for the Option List Heading section. The default renderer for this section calls CommandLine.Help.optionListHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_OPTION_LIST
```
public static final String SECTION_KEY_OPTION_LIST
```
    Section key to control the section renderer for the Option List section. The default renderer for this section calls CommandLine.Help.optionList().
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_END_OF_OPTIONS
```
public static final String SECTION_KEY_END_OF_OPTIONS
```
    Section key to control the section renderer for the -- End of Options list section. The default renderer for this section calls CommandLine.Help.endOfOptionsList().
    
    Since:
    
    4.3
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_COMMAND_LIST_HEADING
```
public static final String SECTION_KEY_COMMAND_LIST_HEADING
```
    Section key to control the section renderer for the Subcommand List Heading section. The default renderer for this section calls CommandLine.Help.commandListHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_COMMAND_LIST
```
public static final String SECTION_KEY_COMMAND_LIST
```
    Section key to control the section renderer for the Subcommand List section. The default renderer for this section calls CommandLine.Help.commandList().
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_EXIT_CODE_LIST_HEADING
```
public static final String SECTION_KEY_EXIT_CODE_LIST_HEADING
```
    Section key to control the section renderer for the Exit Code List Heading section. The default renderer for this section calls CommandLine.Help.exitCodeListHeading(Object...).
    
    Since:
    
    4.0
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_EXIT_CODE_LIST
```
public static final String SECTION_KEY_EXIT_CODE_LIST
```
    Section key to control the section renderer for the Exit Code List section. The default renderer for this section calls CommandLine.Help.exitCodeList().
    
    Since:
    
    4.0
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_FOOTER_HEADING
```
public static final String SECTION_KEY_FOOTER_HEADING
```
    Section key to control the section renderer for the Footer Heading section. The default renderer for this section calls CommandLine.Help.footerHeading(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - SECTION_KEY_FOOTER
```
public static final String SECTION_KEY_FOOTER
```
    Section key to control the section renderer for the Footer section. The default renderer for this section calls CommandLine.Help.footer(Object...).
    
    Since:
    
    3.9
    
    See Also:
    
    Constant Field Values
  - DEFAULT_USAGE_WIDTH
```
public static final int DEFAULT_USAGE_WIDTH
```
    Constant holding the default usage message width: 80.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UsageMessageSpec
```
public UsageMessageSpec()
```
- Method Detail
  - width
```
public CommandLine.Model.UsageMessageSpec width(int newValue)
```
    Sets the maximum usage help message width to the specified value. Longer values are wrapped.
    
    Parameters:
    
    newValue - the new maximum usage help message width. Must be 55 or greater.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Throws:
    
    IllegalArgumentException - if the specified width is less than 55
  - longOptionsMaxWidth
```
public CommandLine.Model.UsageMessageSpec longOptionsMaxWidth(int newValue)
```
    Sets the maximum usage help long options column max width to the specified value. This value controls the maximum width of the long options column: any positional parameter labels or long options that are longer than the specified value will overflow into the description column, and cause the description to be displayed on the next line.
    
    Parameters:
    
    newValue - the new maximum usage help long options column max width. Must be 20 or greater.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Throws:
    
    IllegalArgumentException - if the specified long options column max is less than 20
    
    Since:
    
    4.2
  - width
```
public int width()
```
    Returns the maximum usage help message width. Derived from system property "picocli.usage.width" if set, otherwise returns the value set via the width(int) method, or if not set, the default width.
    
    Returns:
    
    the maximum usage help message width. Never returns less than 55.
  - longOptionsMaxWidth
```
public int longOptionsMaxWidth()
```
    Returns the maximum usage help long options column max width to the specified value. This value controls the maximum width of the long options column: any positional parameter labels or long options that are longer than the specified value will overflow into the description column, and cause the description to be displayed on the next line.
    
    Returns:
    
    the new maximum usage help long options column max width. Always 20 or greater.
    
    Since:
    
    4.2
  - autoWidth
```
public boolean autoWidth()
```
    Returns whether picocli should attempt to detect the terminal size and adjust the usage help message width to take the full terminal width. End users may enable this by setting system property "picocli.usage.width" to AUTO, and may disable this by setting this system property to a numeric value. This feature requires Java 7 or greater. The default is false.
    
    Since:
    
    4.0
    
    See Also:
    
    CommandLine.Command.usageHelpAutoWidth()
  - autoWidth
```
public CommandLine.Model.UsageMessageSpec autoWidth(boolean detectTerminalSize)
```
    Sets whether picocli should attempt to detect the terminal size and adjust the usage help message width to take the full terminal width. The default is false.
    
    Parameters:
    
    detectTerminalSize - whether picocli should attempt to detect the terminal size
    
    Since:
    
    4.0
    
    See Also:
    
    CommandLine.Command.usageHelpAutoWidth()
  - sectionKeys
```
public List<String> sectionKeys()
```
    Returns the section keys in the order that the usage help message should render the sections. This ordering may be modified with the sectionKeys setter. The default keys are (in order):
    
    SECTION_KEY_HEADER_HEADING
    
    SECTION_KEY_HEADER
    
    SECTION_KEY_SYNOPSIS_HEADING
    
    SECTION_KEY_SYNOPSIS
    
    SECTION_KEY_DESCRIPTION_HEADING
    
    SECTION_KEY_DESCRIPTION
    
    SECTION_KEY_PARAMETER_LIST_HEADING
    
    SECTION_KEY_AT_FILE_PARAMETER
    
    SECTION_KEY_PARAMETER_LIST
    
    SECTION_KEY_OPTION_LIST_HEADING
    
    SECTION_KEY_OPTION_LIST
    
    SECTION_KEY_END_OF_OPTIONS
    
    SECTION_KEY_COMMAND_LIST_HEADING
    
    SECTION_KEY_COMMAND_LIST
    
    SECTION_KEY_EXIT_CODE_LIST_HEADING
    
    SECTION_KEY_EXIT_CODE_LIST
    
    SECTION_KEY_FOOTER_HEADING
    
    SECTION_KEY_FOOTER
    Since:
    
    3.9
  - sectionKeys
```
public CommandLine.Model.UsageMessageSpec sectionKeys(List<String> keys)
```
    Sets the section keys in the order that the usage help message should render the sections.
    
    Since:
    
    3.9
    
    See Also:
    
    sectionKeys
  - sectionMap
```
public Map<String,CommandLine.IHelpSectionRenderer> sectionMap()
```
    Returns the map of section keys and renderers used to construct the usage help message. The usage help message can be customized by adding, replacing and removing section renderers from this map. Sections can be reordered with the sectionKeys setter. Sections that are either not in this map or not in the list returned by sectionKeys are omitted.
    
    Since:
    
    3.9
    
    See Also:
    
    sectionKeys
  - sectionMap
```
public CommandLine.Model.UsageMessageSpec sectionMap(Map<String,CommandLine.IHelpSectionRenderer> map)
```
    Sets the map of section keys and renderers used to construct the usage help message to a copy of the specified map.
    
    Parameters:
    
    map - the mapping of section keys to their renderers, must be non-null.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Since:
    
    3.9
    
    See Also:
    
    sectionKeys, CommandLine.setHelpSectionMap(Map)
  - helpFactory
```
public CommandLine.IHelpFactory helpFactory()
```
    Returns the IHelpFactory that is used to construct the usage help message.
    
    Since:
    
    3.9
    
    See Also:
    
    CommandLine.setHelpFactory(IHelpFactory)
  - helpFactory
```
public CommandLine.Model.UsageMessageSpec helpFactory(CommandLine.IHelpFactory helpFactory)
```
    Sets a new IHelpFactory to customize the usage help message.
    
    Parameters:
    
    helpFactory - the new help factory. Must be non-null.
    
    Returns:
    
    this UsageMessageSpec object, to allow method chaining
  - headerHeading
```
public String headerHeading()
```
    Returns the optional heading preceding the header section. Initialized from CommandLine.Command.headerHeading(), or "" (empty string).
  - header
```
public String[] header()
```
    Returns the optional header lines displayed at the top of the help message. For subcommands, the first header line is displayed in the list of commands. Values are initialized from CommandLine.Command.header() if the Command annotation is present, otherwise this is an empty array and the help message has no header. Applications may programmatically set this field to create a custom help message.
  - synopsisHeading
```
public String synopsisHeading()
```
    Returns the optional heading preceding the synopsis. Initialized from CommandLine.Command.synopsisHeading(), "Usage: " by default.
  - synopsisSubcommandLabel
```
public String synopsisSubcommandLabel()
```
    Returns the String representing the subcommands in the synopsis. Initialized from CommandLine.Command.synopsisSubcommandLabel(), "[COMMANDS]" by default.
    
    Since:
    
    4.0
  - synopsisAutoIndentThreshold
```
public double synopsisAutoIndentThreshold()
```
    Returns the fraction of the usage help width() that is the threshold up to which the 2nd line and subsequent lines of a multi-line synopsis should be aligned to the end of the command name. The default value of this attribute is 0.5. If the length of the synopsis heading plus the length of the fully qualified command name exceeds this fraction of the width, the 2nd and subsequent rows of a multi-line synopsis will be aligned to the synopsisIndent() instead of the end of the command name.
    
    Since:
    
    4.0
  - synopsisIndent
```
public int synopsisIndent()
```
    Returns the indentation to use on the 2nd line and subsequent lines of a multi-line synopsis when the length of the synopsis heading and the fully qualified command name exceed the width() times the synopsisAutoIndentThreshold(), -1 by default. A negative value for this option means that the 2nd line and subsequent lines are aligned to the synopsis heading length. A positive value means the exact number of spaces to indent for the 2nd line and subsequent lines of the synopsis.
    
    Since:
    
    4.0
  - abbreviateSynopsis
```
public boolean abbreviateSynopsis()
```
    Returns whether the synopsis line(s) should show an abbreviated synopsis without detailed option names.
  - customSynopsis
```
public String[] customSynopsis()
```
    Returns the optional custom synopsis lines to use instead of the auto-generated synopsis. Initialized from CommandLine.Command.customSynopsis() if the Command annotation is present, otherwise this is an empty array and the synopsis is generated. Applications may programmatically set this field to create a custom help message.
  - descriptionHeading
```
public String descriptionHeading()
```
    Returns the optional heading preceding the description section. Initialized from CommandLine.Command.descriptionHeading(), or null.
  - description
```
public String[] description()
```
    Returns the optional text lines to use as the description of the help message, displayed between the synopsis and the options list. Initialized from CommandLine.Command.description() if the Command annotation is present, otherwise this is an empty array and the help message has no description. Applications may programmatically set this field to create a custom help message.
  - parameterListHeading
```
public String parameterListHeading()
```
    Returns the optional heading preceding the parameter list. Initialized from CommandLine.Command.parameterListHeading(), or null.
  - optionListHeading
```
public String optionListHeading()
```
    Returns the optional heading preceding the options list. Initialized from CommandLine.Command.optionListHeading(), or null.
  - sortOptions
```
public boolean sortOptions()
```
    Returns whether the options list in the usage help message should be sorted alphabetically.
  - requiredOptionMarker
```
public char requiredOptionMarker()
```
    Returns the character used to prefix required options in the options list.
  - showDefaultValues
```
public boolean showDefaultValues()
```
    Returns whether the options list in the usage help message should show default values for all non-boolean options.
  - showAtFileInUsageHelp
```
public boolean showAtFileInUsageHelp()
```
    Sets whether to show a [@<filename>...] entry in the synopsis and parameter list of the usage help message. (The entry is not shown if expanding parameter files is disabled.)
    
    Since:
    
    4.2
    
    See Also:
    
    CommandLine.Command.showAtFileInUsageHelp()
  - showEndOfOptionsDelimiterInUsageHelp
```
public boolean showEndOfOptionsDelimiterInUsageHelp()
```
    Sets whether to show a [--] (End of Options) entry in the synopsis and options list of the usage help message.
    
    Since:
    
    4.3
    
    See Also:
    
    CommandLine.Command.showEndOfOptionsDelimiterInUsageHelp()
  - hidden
```
public boolean hidden()
```
    Returns whether this command should be hidden from the usage help message of the parent command.
    
    Returns:
    
    true if this command should not appear in the usage help message of the parent command
  - commandListHeading
```
public String commandListHeading()
```
    Returns the optional heading preceding the subcommand list. Initialized from CommandLine.Command.commandListHeading(). "Commands:%n" by default.
  - exitCodeListHeading
```
public String exitCodeListHeading()
```
    Returns the optional heading preceding the exit codes section, may contain "%n" line separators. "" (empty string) by default.
  - exitCodeList
```
public Map<String,String> exitCodeList()
```
    Returns an unmodifiable map with values to be displayed in the exit codes section: keys are exit codes, values are descriptions. Descriptions may contain "%n" line separators. Callers may be interested in the keyValuesMap method for creating a map from a list of "key:value" Strings.
    This may be configured in a resource bundle by listing up multiple "key:value" pairs. For example:
    
    usage.exitCodeList.0 = 0:Successful program execution. usage.exitCodeList.1 = 64:Invalid input: an unknown option or invalid parameter was specified. usage.exitCodeList.2 = 70:Execution exception: an exception occurred while executing the business logic.
    Returns:
    
    an unmodifiable map with values to be displayed in the exit codes section, or an empty map if no exit codes are registered.
    
    Since:
    
    4.0
    
    See Also:
    
    keyValuesMap(String...)
  - keyValuesMap
```
public static Map<String,String> keyValuesMap(String... entries)
```
    Creates and returns a Map that contains an entry for each specified String that is in "key:value" format.
    
    Parameters:
    
    entries - the strings to process; values that are not in "key:value" format are ignored
    
    Returns:
    
    a Map with an entry for each line, preserving the input order
    
    Since:
    
    4.0
  - footerHeading
```
public String footerHeading()
```
    Returns the optional heading preceding the footer section. Initialized from CommandLine.Command.footerHeading(), or "" (empty string).
  - footer
```
public String[] footer()
```
    Returns the optional footer text lines displayed at the bottom of the help message. Initialized from CommandLine.Command.footer() if the Command annotation is present, otherwise this is an empty array and the help message has no footer. Applications may programmatically set this field to create a custom help message.
  - headerHeading
```
public CommandLine.Model.UsageMessageSpec headerHeading(String headerHeading)
```
    Sets the heading preceding the header section. Initialized from CommandLine.Command.headerHeading(), or null.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - header
```
public CommandLine.Model.UsageMessageSpec header(String... header)
```
    Sets the optional header lines displayed at the top of the help message. For subcommands, the first header line is displayed in the list of commands.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - synopsisHeading
```
public CommandLine.Model.UsageMessageSpec synopsisHeading(String newValue)
```
    Sets the optional heading preceding the synopsis.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - synopsisSubcommandLabel
```
public CommandLine.Model.UsageMessageSpec synopsisSubcommandLabel(String newValue)
```
    Sets the String representing the subcommands in the synopsis.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Since:
    
    4.0
  - synopsisAutoIndentThreshold
```
public CommandLine.Model.UsageMessageSpec synopsisAutoIndentThreshold(double newValue)
```
    Sets the fraction of the usage help width() that is the threshold up to which the 2nd line and subsequent lines of a multi-line synopsis should be aligned to the end of the command name. The default value of this attribute is 0.5. If the length of the synopsis heading plus the length of the fully qualified command name exceeds this fraction of the width, the 2nd and subsequent rows of a multi-line synopsis will be aligned to the synopsisIndent() instead of the end of the command name.
    
    Parameters:
    
    newValue - the new threshold value. Must be a value between 0.0 and 0.9, inclusive
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Throws:
    
    IllegalArgumentException - if the specified value is less than 0.0 or greater than 0.9
    
    Since:
    
    4.0
  - synopsisIndent
```
public CommandLine.Model.UsageMessageSpec synopsisIndent(int newValue)
```
    Sets the indentation to use on the 2nd line and subsequent lines of a multi-line synopsis when the length of the synopsis heading and the fully qualified command name exceed the synopsisAutoIndentThreshold() fraction of the width(), -1 by default. A negative value for this option means that the 2nd line and subsequent lines are aligned to the synopsis heading length. A positive value means the exact number of spaces to indent for the 2nd line and subsequent lines of the synopsis.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Since:
    
    4.0
  - abbreviateSynopsis
```
public CommandLine.Model.UsageMessageSpec abbreviateSynopsis(boolean newValue)
```
    Sets whether the synopsis line(s) should show an abbreviated synopsis without detailed option names.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - customSynopsis
```
public CommandLine.Model.UsageMessageSpec customSynopsis(String... customSynopsis)
```
    Sets the optional custom synopsis lines to use instead of the auto-generated synopsis.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - descriptionHeading
```
public CommandLine.Model.UsageMessageSpec descriptionHeading(String newValue)
```
    Sets the heading preceding the description section.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - description
```
public CommandLine.Model.UsageMessageSpec description(String... description)
```
    Sets the optional text lines to use as the description of the help message, displayed between the synopsis and the options list.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - parameterListHeading
```
public CommandLine.Model.UsageMessageSpec parameterListHeading(String newValue)
```
    Sets the optional heading preceding the parameter list.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - optionListHeading
```
public CommandLine.Model.UsageMessageSpec optionListHeading(String newValue)
```
    Sets the heading preceding the options list.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - sortOptions
```
public CommandLine.Model.UsageMessageSpec sortOptions(boolean newValue)
```
    Sets whether the options list in the usage help message should be sorted alphabetically.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - requiredOptionMarker
```
public CommandLine.Model.UsageMessageSpec requiredOptionMarker(char newValue)
```
    Sets the character used to prefix required options in the options list.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - showDefaultValues
```
public CommandLine.Model.UsageMessageSpec showDefaultValues(boolean newValue)
```
    Sets whether the options list in the usage help message should show default values for all non-boolean options.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - showAtFileInUsageHelp
```
public CommandLine.Model.UsageMessageSpec showAtFileInUsageHelp(boolean newValue)
```
    Sets whether to show a [@<filename>...] entry in the synopsis and parameter list of the usage help message. (The entry is not shown if expanding parameter files is disabled.)
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Since:
    
    4.2
    
    See Also:
    
    CommandLine.Command.showAtFileInUsageHelp()
  - showEndOfOptionsDelimiterInUsageHelp
```
public CommandLine.Model.UsageMessageSpec showEndOfOptionsDelimiterInUsageHelp(boolean newValue)
```
    Sets whether to show a [--] (End of Options) entry in the synopsis and options list of the usage help message.
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    Since:
    
    4.3
    
    See Also:
    
    CommandLine.Command.showEndOfOptionsDelimiterInUsageHelp()
  - hidden
```
public CommandLine.Model.UsageMessageSpec hidden(boolean value)
```
    Set the hidden flag on this command to control whether to show or hide it in the help usage text of the parent command.
    
    Parameters:
    
    value - enable or disable the hidden flag
    
    Returns:
    
    this UsageMessageSpec for method chaining
    
    See Also:
    
    CommandLine.Command.hidden()
  - commandListHeading
```
public CommandLine.Model.UsageMessageSpec commandListHeading(String newValue)
```
    Sets the optional heading preceding the subcommand list.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - exitCodeListHeading
```
public CommandLine.Model.UsageMessageSpec exitCodeListHeading(String newValue)
```
    Sets the optional heading preceding the exit codes section, may contain "%n" line separators. "" (empty string) by default.
    
    Since:
    
    4.0
  - exitCodeList
```
public CommandLine.Model.UsageMessageSpec exitCodeList(Map<String,String> newValue)
```
    Sets the values to be displayed in the exit codes section: keys are exit codes, values are descriptions. Descriptions may contain "%n" line separators.
    This may be configured in a resource bundle by listing up multiple "key:value" pairs. For example:
    
    usage.exitCodeList.0 = 0:Successful program execution. usage.exitCodeList.1 = 64:Invalid input: an unknown option or invalid parameter was specified. usage.exitCodeList.2 = 70:Execution exception: an exception occurred while executing the business logic.
    Parameters:
    
    newValue - a map with values to be displayed in the exit codes section
    
    Since:
    
    4.0
    
    See Also:
    
    keyValuesMap(String...)
  - footerHeading
```
public CommandLine.Model.UsageMessageSpec footerHeading(String newValue)
```
    Sets the optional heading preceding the footer section.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - footer
```
public CommandLine.Model.UsageMessageSpec footer(String... footer)
```
    Sets the optional footer text lines displayed at the bottom of the help message.
    
    Returns:
    
    this UsageMessageSpec for method chaining
  - messages
```
public CommandLine.Model.Messages messages()
```
    Returns the Messages for this usage help message specification, or null.
    
    Returns:
    
    the Messages object that encapsulates this command's resource bundle
    
    Since:
    
    3.6
  - messages
```
public CommandLine.Model.UsageMessageSpec messages(CommandLine.Model.Messages msgs)
```
    Sets the Messages for this usageMessage specification, and returns this UsageMessageSpec.
    
    Parameters:
    
    msgs - the new Messages value that encapsulates this command's resource bundle, may be null
    
    Since:
    
    3.6
  - adjustLineBreaksForWideCJKCharacters
```
public boolean adjustLineBreaksForWideCJKCharacters()
```
    Returns whether line breaks should take wide Chinese, Japanese and Korean characters into account for line-breaking purposes.
    
    Returns:
    
    true if wide Chinese, Japanese and Korean characters are counted as double the size of other characters for line-breaking purposes
    
    Since:
    
    4.0
  - adjustLineBreaksForWideCJKCharacters
```
public CommandLine.Model.UsageMessageSpec adjustLineBreaksForWideCJKCharacters(boolean adjustForWideChars)
```
    Sets whether line breaks should take wide Chinese, Japanese and Korean characters into account, and returns this UsageMessageSpec.
    
    Parameters:
    
    adjustForWideChars - if true, wide Chinese, Japanese and Korean characters are counted as double the size of other characters for line-breaking purposes
    
    Since:
    
    4.0

Class CommandLine.Model.UsageMessageSpec

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SECTION_KEY_HEADER_HEADING

SECTION_KEY_HEADER

SECTION_KEY_SYNOPSIS_HEADING

SECTION_KEY_SYNOPSIS

SECTION_KEY_DESCRIPTION_HEADING

SECTION_KEY_DESCRIPTION

SECTION_KEY_PARAMETER_LIST_HEADING

SECTION_KEY_AT_FILE_PARAMETER

SECTION_KEY_PARAMETER_LIST

SECTION_KEY_OPTION_LIST_HEADING

SECTION_KEY_OPTION_LIST

SECTION_KEY_END_OF_OPTIONS

SECTION_KEY_COMMAND_LIST_HEADING

SECTION_KEY_COMMAND_LIST

SECTION_KEY_EXIT_CODE_LIST_HEADING

SECTION_KEY_EXIT_CODE_LIST

SECTION_KEY_FOOTER_HEADING

SECTION_KEY_FOOTER

DEFAULT_USAGE_WIDTH

Constructor Detail

UsageMessageSpec

Method Detail

width

longOptionsMaxWidth

width

longOptionsMaxWidth

autoWidth

autoWidth

sectionKeys

sectionKeys

sectionMap

sectionMap

helpFactory

helpFactory

headerHeading

header

synopsisHeading

synopsisSubcommandLabel

synopsisAutoIndentThreshold

synopsisIndent

abbreviateSynopsis

customSynopsis

descriptionHeading

description

parameterListHeading

optionListHeading

sortOptions

requiredOptionMarker

showDefaultValues

showAtFileInUsageHelp

showEndOfOptionsDelimiterInUsageHelp

hidden

commandListHeading

exitCodeListHeading

exitCodeList

keyValuesMap

footerHeading

footer