com.bea.p13n.util
Class MimeTypeHelper

java.lang.Object
  com.bea.p13n.util.MimeTypeHelper

public class MimeTypeHelper

extends Object

Utility class to help with Mime Types.

This provides support for determining the MIME type based upon a file path/extension, and determining the extensions for a MIME type.

Upon load, this class will attempt to load in the "mime.types" in the same package as it (as a resource via getResource()). If that fails, an error will be thrown. The "mime.types" file should be of the standard Apache group format and provides information on most public mime types.

Since:

2.0

Nested Class Summary

static class

MimeTypeHelper.ContentType The data representation of a MIME 1.0 Content Type.

Method Summary

static List	getExtensions(String mimeType) Get the list of extensions for the given mime type.
static String	getFileExtension(String path) Get the last most extension from a file path.
static String	getMajor(String mimeType) Get the major portion of a mime type.
static String	getMimeType(File file) Get the mime type for the specified file.
static String	getMimeType(String ext) Get the mime type for the specified extension.
static String	getMimeTypeFromPath(String path) Get the mime type for the specified file path.
static String	getMinor(String mimeType) Get the minor portion of a mime type.
static MimeTypeHelper.ContentType	parseContentType(String str) Parse a MIME 1.0 Content-Type string into a data structure.
static List	split(String str, String seps) Split a string on a separator and return it as a list.
static void	splitInto(String str, String seps, List l) Split a string on a separator into the given list

Methods inherited from class java.lang.Object

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

Method Detail

getExtensions

public static List getExtensions(String mimeType)

Get the list of extensions for the given mime type.

Parameters:

mimeType - the mime type.

Returns:

the list on success, null on unknown mime type (empty list if no associated mime types).

getFileExtension

public static String getFileExtension(String path)

Get the last most extension from a file path.

This can handle both UNIX and Win32 paths.

Parameters:

path - the file path.

Returns:

the extension (no . included), null if none.

getMajor

public static String getMajor(String mimeType)

Get the major portion of a mime type.

Parameters:

mimeType - the mime type.

Returns:

the major (first) part of the mime type, null on invalid mime type.

getMimeType

public static String getMimeType(File file)

Get the mime type for the specified file.

Parameters:

file - the file.

Returns:

the mime type, or null if unknown.

See Also:

getMimeTypeFromPath(java.lang.String)

getMimeType

public static String getMimeType(String ext)

Get the mime type for the specified extension.

Parameters:

ext - the file extensions (no . included).

Returns:

the mime type, or null if unknown.

getMimeTypeFromPath

public static String getMimeTypeFromPath(String path)

Get the mime type for the specified file path.

Parameters:

path - the file path.

Returns:

the mime type, or null if unknown.

See Also:

getMimeType(java.lang.String), getFileExtension(java.lang.String)

getMinor

public static String getMinor(String mimeType)

Get the minor portion of a mime type.

Parameters:

mimeType - the mime type.

Returns:

the major (first) part of the mime type, null on invalid mime

parseContentType

public static MimeTypeHelper.ContentType parseContentType(String str)

Parse a MIME 1.0 Content-Type string into a data structure.

See RFC 2045 for more details of the structure of a MIME Content-Type string.

Parameters:

str - the content type string.

Returns:

the ContentType object, or null if invalid str.

split

public static List split(String str,
                         String seps)

Split a string on a separator and return it as a list.

Parameters:

str - the string to split.

seps - the separators (as per StringTokenizer).

Returns:

list of elements.

splitInto

public static void splitInto(String str,
                             String seps,
                             List l)

Split a string on a separator into the given list

Parameters:

str - the string to split.

seps - the separators (as per StringTokenizer).

l - the list.