org.norther.tammi.acorn.mime
Class MimeTypeMapper

java.lang.Object
  org.norther.tammi.acorn.mime.MimeTypeMapper

public class MimeTypeMapper
extends Object

MimeTypeMapper defines mappings between MIME types and the corresponding file name extensions. The mappings are defined as lines formed by a MIME type name followed by a list of extensions separated by a whitespace.

Author:

Ilkka Priha

Constructor Summary

MimeTypeMapper()
Constructs an empty MIME type mapper.

MimeTypeMapper(File file)
Constructs a mapper reading from a file.

MimeTypeMapper(InputStream input)
Constructs a mapper reading from a stream.

MimeTypeMapper(String path)
Constructs a mapper reading from a file path.

Method Summary

String	getContentType(String ext) Gets a MIME content type corresponding to a specified file name extension.
protected String[]	getContentTypes(String ext) Gets all MIME content types corresponding to a specified file name extension.
String	getExtension(String type) Gets a file name extension corresponding to a specified MIME content type.
protected String[]	getExtensions(String type) Gets all file name extensions corresponding to a specified MIME content type.
protected void	parse(BufferedReader reader, boolean replace) Parses MIME type extensions.
protected int	parseMimeTypeExtension(String spec, Map mimeTypes, Map extensions, boolean replace) Parses a MIME type extension.
void	setContentType(String spec) Sets a MIME content type mapping to extensions.

Methods inherited from class java.lang.Object

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

Constructor Detail

MimeTypeMapper

public MimeTypeMapper()

Constructs an empty MIME type mapper.

MimeTypeMapper

public MimeTypeMapper(InputStream input)
               throws IOException

Constructs a mapper reading from a stream.

Parameters:

input - an input stream.

Throws:

IOException - for an incorrect stream.

MimeTypeMapper

public MimeTypeMapper(File file)
               throws IOException

Constructs a mapper reading from a file.

Parameters:

file - an input file.

Throws:

IOException - for an incorrect file.

MimeTypeMapper

public MimeTypeMapper(String path)
               throws IOException

Constructs a mapper reading from a file path.

Parameters:

path - an input file path.

Throws:

IOException - for an incorrect file.

Method Detail

getContentType

public String getContentType(String ext)

Gets a MIME content type corresponding to a specified file name extension.

Parameters:

ext - a file name extension.

Returns:

the corresponding MIME type string or null.

getExtension

public String getExtension(String type)

Gets a file name extension corresponding to a specified MIME content type.

Parameters:

type - a MIME type string.

Returns:

the corresponding file name extension or null.

setContentType

public void setContentType(String spec)

Sets a MIME content type mapping to extensions.

Parameters:

spec - a MIME type extension specification to parse.

getContentTypes

protected String[] getContentTypes(String ext)

Gets all MIME content types corresponding to a specified file name extension.

Note that the internal array of the mapper is returned.

Parameters:

ext - a file name extension.

Returns:

the corresponding MIME type string or null.

getExtensions

protected String[] getExtensions(String type)

Gets all file name extensions corresponding to a specified MIME content type.

Note that the internal array of the mapper is returned.

Parameters:

type - a MIME type string.

Returns:

the corresponding file name extensions or null.

parse

protected void parse(BufferedReader reader,
                     boolean replace)
              throws IOException

Parses MIME type extensions.

Parameters:

reader - a reader to parse.

replace - a flag to replace.

Throws:

IOException - for an incorrect reader.

parseMimeTypeExtension

protected int parseMimeTypeExtension(String spec,
                                     Map mimeTypes,
                                     Map extensions,
                                     boolean replace)

Parses a MIME type extension.

Parameters:

spec - an extension specification to parse.

mimeTypes - a map of MIME types.

extensions - a map of extensions.

replace - a flag to replace.

Returns:

the number of file name extensions parsed.