org.vishia.charset

Interface CodeCharset

All Known Implementing Classes:

ASCII7bit, ISO8859_1, ISO8859_2

public interface CodeCharset

Interface to convert UTF-16 to 8-bit-codings. The implementation of Charset etc. may be over engineered, An important feature: report non-map-able characters, is missing. The conversion between the ISO-8859-1 code page and UTF16 is very simple because it is the low part of UTF-16, see ISO8859_1. All other code pages needs three tables with binary search for encoding, see ISO8859_2 etc. In the moment only ISO8859-1 is supported.

Since:

2019-12-28

Field Summary

Fields

Modifier and Type	Field and Description
static CodeCharset	ascii
static java.util.Map<java.lang.String,CodeCharset>	charsets
static CodeCharset	iso8859_1

Method Summary

Modifier and Type	Method and Description
static CodeCharset	forName(java.lang.String name)
char	getChar(int code) Converts from a 8-bit-code to a character
java.nio.charset.Charset	getCharset()
int	getCode(char cc) Converts from a UTC-16(Java-Character to a 8 bit coding.

Field Detail

charsets

static final java.util.Map<java.lang.String,CodeCharset> charsets

iso8859_1

static final CodeCharset iso8859_1

ascii

static final CodeCharset ascii

Method Detail

getCode

int getCode(char cc)

Converts from a UTC-16(Java-Character to a 8 bit coding.

Parameters:

cc - the character

Returns:

0 if not mapped. 1..255 for 8-bit-mapping. If >=256 then it is a sequence of bytes (UTF8) with max. 4 Byte (for not all UTF characters)

getChar

char getChar(int code)

Converts from a 8-bit-code to a character

Parameters:

code - in range 0..255, maybe >= 256 for UTF-8 sequences (The lowest byte is the first byte), with max. 4 Byte (for not all UTF characters)

Returns:

The character.

getCharset

java.nio.charset.Charset getCharset()

forName

static CodeCharset forName(java.lang.String name)