Enum CommandLine.Help.Ansi
- java.lang.Object
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- java.lang.Enum<CommandLine.Help.Ansi>
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- org.apache.logging.log4j.core.tools.picocli.CommandLine.Help.Ansi
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<CommandLine.Help.Ansi>
- Enclosing class:
- CommandLine.Help
public static enum CommandLine.Help.Ansi extends java.lang.Enum<CommandLine.Help.Ansi>
Provides methods and inner classes to support using ANSI escape codes in usage help messages.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static interface
CommandLine.Help.Ansi.IStyle
Defines the interface for an ANSI escape sequence.(package private) static class
CommandLine.Help.Ansi.Palette256Color
Defines a palette map of 216 colors: 6 * 6 * 6 cube (216 colors): 16 + 36 * r + 6 * g + b (0 <= r, g, b <= 5).static class
CommandLine.Help.Ansi.Style
A set of pre-defined ANSI escape code styles and colors, and a set of convenience methods for parsing text with embedded markup style names, as well as convenience methods for converting styles to strings with embedded escape codes.private static class
CommandLine.Help.Ansi.StyledSection
class
CommandLine.Help.Ansi.Text
Encapsulates rich text with styles and colors.
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Enum Constant Summary
Enum Constants Enum Constant Description AUTO
Only emit ANSI escape codes if the platform supports it and system property"picocli.ansi"
is not set to any value other than"true"
(case insensitive).OFF
Forced OFF: never emit ANSI escape code regardless of the platform.ON
Forced ON: always emit ANSI escape code regardless of the platform.
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Field Summary
Fields Modifier and Type Field Description (package private) static CommandLine.Help.Ansi.Text
EMPTY_TEXT
(package private) static boolean
ISATTY
(package private) static boolean
isWindows
(package private) static boolean
isXterm
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Constructor Summary
Constructors Modifier Constructor Description private
Ansi()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description private static boolean
ansiPossible()
CommandLine.Help.Ansi.Text
apply(java.lang.String plainText, java.util.List<CommandLine.Help.Ansi.IStyle> styles)
Returns a new Text object where all the specified styles are applied to the full length of the specified plain text.(package private) static boolean
calcTTY()
boolean
enabled()
Returnstrue
if ANSI escape codes should be emitted,false
otherwise.private static <T> T[]
reverse(T[] all)
static CommandLine.Help.Ansi
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static CommandLine.Help.Ansi[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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AUTO
public static final CommandLine.Help.Ansi AUTO
Only emit ANSI escape codes if the platform supports it and system property"picocli.ansi"
is not set to any value other than"true"
(case insensitive).
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ON
public static final CommandLine.Help.Ansi ON
Forced ON: always emit ANSI escape code regardless of the platform.
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OFF
public static final CommandLine.Help.Ansi OFF
Forced OFF: never emit ANSI escape code regardless of the platform.
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Field Detail
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EMPTY_TEXT
static CommandLine.Help.Ansi.Text EMPTY_TEXT
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isWindows
static final boolean isWindows
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isXterm
static final boolean isXterm
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ISATTY
static final boolean ISATTY
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Method Detail
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values
public static CommandLine.Help.Ansi[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (CommandLine.Help.Ansi c : CommandLine.Help.Ansi.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static CommandLine.Help.Ansi valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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calcTTY
static final boolean calcTTY()
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ansiPossible
private static boolean ansiPossible()
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enabled
public boolean enabled()
Returnstrue
if ANSI escape codes should be emitted,false
otherwise.- Returns:
- ON:
true
, OFF:false
, AUTO: if system property"picocli.ansi"
is defined then return its boolean value, otherwise return whether the platform supports ANSI escape codes
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apply
public CommandLine.Help.Ansi.Text apply(java.lang.String plainText, java.util.List<CommandLine.Help.Ansi.IStyle> styles)
Returns a new Text object where all the specified styles are applied to the full length of the specified plain text.- Parameters:
plainText
- the string to apply all styles to. Must not contain markup!styles
- the styles to apply to the full plain text- Returns:
- a new Text object
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reverse
private static <T> T[] reverse(T[] all)
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