Package org.eclipse.rdf4j.common.text

Class StringUtil

java.lang.Object

org.eclipse.rdf4j.common.text.StringUtil

public class StringUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
StringUtil()

Method Summary

Modifier and Type	Method	Description
static void	appendN(char c, int n, StringBuilder sb)	Appends the specified character n times to the supplied StringBuilder.
static String	gsub(String olds, String news, String text)	Deprecated. use instead.
static void	simpleEscapeIRI(String str, Appendable appendable, boolean escapeUnicode)	Escapes a string to a (mostly) conforming IRI value and append it to the appendable.
static String	trimDoubleQuotes(String text)	Removes the double quote from the start and end of the supplied string if it starts and ends with this character.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtil

public StringUtil()

Method Detail

gsub

@Deprecated(since="4.0.0")
public static String gsub(String olds,
                          String news,
                          String text)

Deprecated.

use instead.

Substitute String "old" by String "new" in String "text" everywhere. This is a static util function that I could not place anywhere more appropriate. The name of this function is from the good-old awk time.

Parameters:

olds - The String to be substituted.

news - The String is the new content.

text - The String in which the substitution is done.

Returns:

The result String containing the substitutions; if no substitutions were made, the result is 'text'.

simpleEscapeIRI

public static void simpleEscapeIRI(String str,
                                   Appendable appendable,
                                   boolean escapeUnicode)
                            throws IOException

Escapes a string to a (mostly) conforming IRI value and append it to the appendable.

Non-ASCII (valid) values can optionally be numerically encoded by setting escapeUnicode to true. Most characters that are invalid in an IRI - like a white space or control character - are percent-encoded.

This is slightly faster than ParsedIRI.create(String) for valid IRI (without percents) and much faster for IRI with invalid (percent-encoded) characters, though it is less accurate.

Parameters:

str -

appendable -

escapeUnicode - escape non-ASCII values numerically

Throws:

IOException

appendN

public static void appendN(char c,
                           int n,
                           StringBuilder sb)

Appends the specified character n times to the supplied StringBuilder.

Parameters:

c - The character to append.

n - The number of times the character should be appended.

sb - The StringBuilder to append the character(s) to.

trimDoubleQuotes

public static String trimDoubleQuotes(String text)

Removes the double quote from the start and end of the supplied string if it starts and ends with this character. This method does not create a new string if text doesn't start and end with double quotes, the text object itself is returned in that case.

Parameters:

text - The string to remove the double quotes from.

Returns:

The trimmed string, or a reference to text if it did not start and end with double quotes.