com.github.javaparser.utils

Class StringEscapeUtils.OctalUnescaper

java.lang.Object

com.github.javaparser.utils.StringEscapeUtils.CharSequenceTranslator

com.github.javaparser.utils.StringEscapeUtils.OctalUnescaper

Enclosing class:

StringEscapeUtils

private static class StringEscapeUtils.OctalUnescaper
extends StringEscapeUtils.CharSequenceTranslator

Adapted from apache commons-lang3 project.

Translate escaped octal Strings back to their octal values.

For example, "\45" should go back to being the specific value (a %).

Note that this currently only supports the viable range of octal for Java; namely 1 to 377. This is because parsing Java is the main use case.

Since:

3.0

Constructor Summary

Constructors

Modifier	Constructor and Description
private	OctalUnescaper()

Method Summary

Modifier and Type	Method and Description
private boolean	isOctalDigit(char ch) Checks if the given char is an octal digit.
private boolean	isZeroToThree(char ch) Checks if the given char is the character representation of one of the digit from 0 to 3.
int	translate(java.lang.CharSequence input, int index, java.io.Writer out) Translate a set of codepoints, represented by an int index into a CharSequence, into another set of codepoints.

Methods inherited from class com.github.javaparser.utils.StringEscapeUtils.CharSequenceTranslator

translate, translate, with

Methods inherited from class java.lang.Object

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

Constructor Detail

OctalUnescaper

private OctalUnescaper()

Method Detail

translate

public int translate(java.lang.CharSequence input,
                     int index,
                     java.io.Writer out)
              throws java.io.IOException

Translate a set of codepoints, represented by an int index into a CharSequence, into another set of codepoints. The number of codepoints consumed must be returned, and the only IOExceptions thrown must be from interacting with the Writer so that the top level API may reliably ignore StringWriter IOExceptions.

Specified by:

translate in class StringEscapeUtils.CharSequenceTranslator

Parameters:

input - CharSequence that is being translated

index - int representing the current point of translation

out - Writer to translate the text to

Returns:

int count of codepoints consumed

Throws:

java.io.IOException - if and only if the Writer produces an IOException

isOctalDigit

private boolean isOctalDigit(char ch)

Checks if the given char is an octal digit. Octal digits are the character representations of the digits 0 to 7.

Parameters:

ch - the char to check

Returns:

true if the given char is the character representation of one of the digits from 0 to 7

isZeroToThree

private boolean isZeroToThree(char ch)

Checks if the given char is the character representation of one of the digit from 0 to 3.

Parameters:

ch - the char to check

Returns:

true if the given char is the character representation of one of the digits from 0 to 3