java.lang.Object
- gov.nih.mipav.model.file.MetadataExtractor.Iso2022Converter

Enclosing class:: MetadataExtractor

public final class MetadataExtractor.Iso2022Converter
extends java.lang.Object

Field Summary

Fields
Modifier and Type	Field	Description
`private static int`	`DOT`
`private static byte`	`DOT_SIGN`
`private static byte`	`ESC`
`private static java.lang.String`	`ISO_8859_1`
`private static byte`	`LATIN_CAPITAL_A`
`private static byte`	`LATIN_CAPITAL_G`
`private static byte`	`PERCENT_SIGN`
`private static java.lang.String`	`UTF_8`

Constructor Summary

Constructors
Constructor Description

Iso2022Converter()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`convertISO2022CharsetToJavaCharset(byte[] bytes)`	Converts the given ISO2022 char set to a Java charset name.
`(package private) java.nio.charset.Charset`	`guessCharSet(byte[] bytes)`	Attempts to guess the `Charset` of a string provided as a byte array.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ISO_8859_1
```
private static final java.lang.String ISO_8859_1
```
    See Also:
    
    Constant Field Values
  - UTF_8
```
private static final java.lang.String UTF_8
```
    See Also:
    
    Constant Field Values
  - LATIN_CAPITAL_A
```
private static final byte LATIN_CAPITAL_A
```
    See Also:
    
    Constant Field Values
  - DOT
```
private static final int DOT
```
    See Also:
    
    Constant Field Values
  - LATIN_CAPITAL_G
```
private static final byte LATIN_CAPITAL_G
```
    See Also:
    
    Constant Field Values
  - PERCENT_SIGN
```
private static final byte PERCENT_SIGN
```
    See Also:
    
    Constant Field Values
  - DOT_SIGN
```
private static final byte DOT_SIGN
```
    See Also:
    
    Constant Field Values
  - ESC
```
private static final byte ESC
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Iso2022Converter
```
public Iso2022Converter()
```
- Method Detail
  - convertISO2022CharsetToJavaCharset
```
public java.lang.String convertISO2022CharsetToJavaCharset(byte[] bytes)
```
    Converts the given ISO2022 char set to a Java charset name. A reference of valid charsets can be found here: http://nozer0.github.io/en/technology/system/character-encoding/#ISO/IEC%202022
    
    Parameters:
    
    bytes - string data encoded using ISO2022
    
    Returns:
    
    the Java charset name as a string, or null if the conversion was not possible
  - guessCharSet
```
java.nio.charset.Charset guessCharSet(byte[] bytes)
```
    Attempts to guess the Charset of a string provided as a byte array.
    Charsets trialled are, in order:
    
    UTF-8
    
    System.getProperty("file.encoding")
    
    ISO-8859-1
    
    Its only purpose is to guess the Charset if and only if IPTC tag coded character set is not set. If the encoding is not UTF-8, the tag should be set. Otherwise it is bad practice. This method tries to workaround this issue since some metadata manipulating tools do not prevent such bad practice.
    About the reliability of this method: The check if some bytes are UTF-8 or not has a very high reliability. The two other checks are less reliable.
    Parameters:
    
    bytes - some text as bytes
    
    Returns:
    
    the name of the encoding or null if none could be guessed

Class MetadataExtractor.Iso2022Converter

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ISO_8859_1

UTF_8

LATIN_CAPITAL_A

DOT

LATIN_CAPITAL_G

PERCENT_SIGN

DOT_SIGN

ESC

Constructor Detail

Iso2022Converter

Method Detail

convertISO2022CharsetToJavaCharset

guessCharSet