Package org.apache.commons.cli.help

Interface HelpAppendable

All Superinterfaces:

Appendable

All Known Implementing Classes:

FilterHelpAppendable, TextHelpAppendable

public interface HelpAppendable
extends Appendable

Defines a semantic scribe. The semantic scribe appends text to an output based on the semantic meaning of the type of string. For example, a Paragraph versus a Heading.

The representation of the semantics is dependent upon the format being output. For example, the plain text output for a paragraph may print the text followed by two line breaks, while an XHTML output would print the text surrounded by <p> and </p>.

Note the Appendable documentation on the topics of Unicode and threading, these comments also apply here.

Since:

1.10.0

Method Summary

Modifier and Type	Method	Description
default void	appendFormat(String format, Object... args)	Appends a formatted string using the specified format string and arguments.
void	appendHeader(int level, CharSequence text)	Appends a header.
void	appendList(boolean ordered, Collection<CharSequence> list)	Appends a list.
void	appendParagraph(CharSequence paragraph)	Appends a paragraph.
default void	appendParagraphFormat(String format, Object... args)	Appends a formatted string as a paragraph.
void	appendTable(TableDefinition table)	Appends a table.
void	appendTitle(CharSequence title)	Appends a title.

Methods inherited from interface java.lang.Appendable

append, append, append

Method Details

appendFormat

default void appendFormat(String format,
 Object... args)
                   throws IOException

Appends a formatted string using the specified format string and arguments.

Short-hand for calling:

 helpAppendable.append.(String.format(format, args));
 

Parameters:

format - The format string for String.format(String, Object...).

args - Arguments to String.format(String, Object...).

Throws:

IllegalFormatException - See String.format(String, Object...).

IOException - If an output error occurs.

See Also:

• String.format(String, Object...)
• Formatter
• Appendable.append(CharSequence)

appendHeader

void appendHeader(int level,
 CharSequence text)
           throws IOException

Appends a header.

Parameters:

level - the level of the header. This is equivalent to the "1", "2", or "3" in the HTML "h1", "h2", "h3" tags.

text - the text for the header, null is a noop.

Throws:

IOException - If an output error occurs.

appendList

void appendList(boolean ordered,
 Collection<CharSequence> list)
         throws IOException

Appends a list.

Parameters:

ordered - true if the list should be ordered.

list - the list to write, null is a noop.

Throws:

IOException - If an output error occurs.

appendParagraph

void appendParagraph(CharSequence paragraph)
              throws IOException

Appends a paragraph.

Parameters:

paragraph - the paragraph to write, null is a noop.

Throws:

IOException - If an output error occurs.

appendParagraphFormat

default void appendParagraphFormat(String format,
 Object... args)
                            throws IOException

Appends a formatted string as a paragraph.

 helpAppendable.appendParagraph.(String.format(format, args));
 

Parameters:

format - The format string for String.format(String, Object...).

args - Arguments to String.format(String, Object...).

Throws:

IllegalFormatException - See String.format(String, Object...).

IOException - If an output error occurs.

See Also:

• String.format(String, Object...)
• Formatter
• Appendable.append(CharSequence)

appendTable

void appendTable(TableDefinition table)
          throws IOException

Appends a table.

Parameters:

table - the table definition to write, null is a noop.

Throws:

IOException - If an output error occurs.

appendTitle

void appendTitle(CharSequence title)
          throws IOException

Appends a title.

Parameters:

title - the title to write, null is a noop.

Throws:

IOException - If an output error occurs.