net.sourceforge.argparse4j.helper

Class TextHelper

java.lang.Object

net.sourceforge.argparse4j.helper.TextHelper

public final class TextHelper
extends Object

This class provides various helper function related to text processing.

The application code should not use this class directly.

Field Summary

Fields

Modifier and Type	Field and Description
static String	LINESEP
static Locale	LOCALE_ROOT Language neutral locale.

Method Summary

Modifier and Type	Method and Description
static StringBuilder	adjustSpace(StringBuilder sb, int width, int curWidth) Given the maximum line width and current line width in sb, insert white spaces in sb to make it look more "natural".
static <T> String	concat(Collection<T> a, int offset, String sep)
static <T> String	concat(Collection<T> a, int offset, String sep, String start, String end)
static <T> String	concat(T[] a, int offset, String sep)
static <T> String	concat(T[] a, int offset, String sep, String start, String end)
static List<String>	findPrefix(Collection<String> src, String prefix) From src, find string whose prefix is prefix and store them in List and return it.
static String	nonNull(String str)
static void	printHelp(PrintWriter writer, String title, String help, TextWidthCounter textWidthCounter, int width)
static String	wrap(TextWidthCounter textWidthCounter, String s, int width, int initialOffset, String initialIndent, String subsequentIndent)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOCALE_ROOT

public static final Locale LOCALE_ROOT

Language neutral locale.

LINESEP

public static final String LINESEP

Method Detail

concat

public static <T> String concat(T[] a,
                                int offset,
                                String sep,
                                String start,
                                String end)

concat

public static <T> String concat(T[] a,
                                int offset,
                                String sep)

concat

public static <T> String concat(Collection<T> a,
                                int offset,
                                String sep,
                                String start,
                                String end)

concat

public static <T> String concat(Collection<T> a,
                                int offset,
                                String sep)

wrap

public static String wrap(TextWidthCounter textWidthCounter,
                          String s,
                          int width,
                          int initialOffset,
                          String initialIndent,
                          String subsequentIndent)

adjustSpace

public static StringBuilder adjustSpace(StringBuilder sb,
                                        int width,
                                        int curWidth)

Given the maximum line width and current line width in sb, insert white spaces in sb to make it look more "natural". The insertion points are the contiguous block of white spaces. Before the processing, leading and trailing white spaces are removed from sb.

Parameters:

sb - String to adjust

width - maximum line width

curWidth - current line width

Returns:

adjusted sb

printHelp

public static void printHelp(PrintWriter writer,
                             String title,
                             String help,
                             TextWidthCounter textWidthCounter,
                             int width)

nonNull

public static String nonNull(String str)

findPrefix

public static List<String> findPrefix(Collection<String> src,
                                      String prefix)

From src, find string whose prefix is prefix and store them in List and return it.

Parameters:

src - collection contains strings to inspect

prefix - prefix

Returns:

List of strings matched