com.helger.commons.mime

Class MimeTypeParser

java.lang.Object

com.helger.commons.mime.MimeTypeParser

@Immutable
public final class MimeTypeParser
extends Object

This class handles the String parsing of MIME types.

Author:

Philip Helger

Method Summary

Methods

Modifier and Type	Method and Description
static char[]	getAllTSpecialChars()
static boolean	isToken(String sToken) Check if the passed string is a valid MIME token by checking that the length is at least 1 and all chars match the isTokenChar(char) condition.
static boolean	isTokenChar(char c) Check if the passed character is a valid token character.
static boolean	isTSpecialChar(char c) Check if the passed character is a special character according to RFC 2045 chapter 5.1
static MimeType	parseMimeType(String sMimeType) Try to convert the string representation of a MIME type to an object.
static MimeType	parseMimeType(String sMimeType, EMimeQuoting eQuotingAlgorithm) Try to convert the string representation of a MIME type to an object.
static MimeType	safeParseMimeType(String sMimeType) Try to convert the string representation of a MIME type to an object.
static MimeType	safeParseMimeType(String sMimeType, EMimeQuoting eQuotingAlgorithm) Try to convert the string representation of a MIME type to an object.

Methods inherited from class java.lang.Object

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

Method Detail

getAllTSpecialChars

@Nonnull
@ReturnsMutableCopy
public static char[] getAllTSpecialChars()

Returns:

A copy of the array with all TSpecial chars. Never null.

isTSpecialChar

public static boolean isTSpecialChar(char c)

Check if the passed character is a special character according to RFC 2045 chapter 5.1

Parameters:

c - The character to check

Returns:

true if the character is a special character, false otherwise.

isTokenChar

public static boolean isTokenChar(char c)

Check if the passed character is a valid token character. According to RFC 2045 this can be any (US-ASCII) CHAR except SPACE, CTLs, or tspecials

Parameters:

c - The character to check.

Returns:

true if the passed character is a valid token character, false otherwise

isToken

public static boolean isToken(@Nullable
              String sToken)

Check if the passed string is a valid MIME token by checking that the length is at least 1 and all chars match the isTokenChar(char) condition.

Parameters:

sToken - The token to be checked. May be null.

Returns:

true if the passed string is valid token, false otherwise.

parseMimeType

@Nullable
public static MimeType parseMimeType(@Nullable
                              String sMimeType)
                              throws MimeTypeParserException

Try to convert the string representation of a MIME type to an object. The default quoting algorithm CMimeType.DEFAULT_QUOTING is used to unquote strings.

Parameters:

sMimeType - The string representation to be converted. May be null.

Returns:

null if the parsed string is empty.

Throws:

MimeTypeParserException - In case of an error

parseMimeType

@Nullable
public static MimeType parseMimeType(@Nullable
                              String sMimeType,
                              @Nonnull
                              EMimeQuoting eQuotingAlgorithm)
                              throws MimeTypeParserException

Try to convert the string representation of a MIME type to an object. The default quoting algorithm CMimeType.DEFAULT_QUOTING is used to un-quote strings.

Parameters:

sMimeType - The string representation to be converted. May be null.

eQuotingAlgorithm - The quoting algorithm to be used to un-quote parameter values. May not be null.

Returns:

null if the parsed string is empty.

Throws:

MimeTypeParserException - In case of an error

safeParseMimeType

@Nullable
public static MimeType safeParseMimeType(@Nullable
                                  String sMimeType)

Try to convert the string representation of a MIME type to an object. The default quoting algorithm CMimeType.DEFAULT_QUOTING is used to unquote strings. Compared to parseMimeType(String) this method swallows all MimeTypeParserException and simply returns null.

Parameters:

sMimeType - The string representation to be converted. May be null.

Returns:

null if the parsed string is empty or not a valid mime type.

safeParseMimeType

@Nullable
public static MimeType safeParseMimeType(@Nullable
                                  String sMimeType,
                                  @Nonnull
                                  EMimeQuoting eQuotingAlgorithm)

Try to convert the string representation of a MIME type to an object. The default quoting algorithm CMimeType.DEFAULT_QUOTING is used to un-quote strings. Compared to parseMimeType(String, EMimeQuoting) this method swallows all MimeTypeParserException and simply returns null.

Parameters:

sMimeType - The string representation to be converted. May be null.

eQuotingAlgorithm - The quoting algorithm to be used to un-quote parameter values. May not be null.

Returns:

null if the parsed string is empty or not a valid mime type.