Class MimeUtility
- java.lang.Object
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- org.apache.commons.fileupload.util.mime.MimeUtility
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public final class MimeUtility extends java.lang.Object
Utility class to decode MIME texts.- Since:
- 1.3
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Field Summary
Fields Modifier and Type Field Description private static java.lang.String
BASE64_ENCODING_MARKER
The marker to indicate text is encoded with BASE64 algorithm.private static java.lang.String
ENCODED_TOKEN_FINISHER
If the text contains any encoded tokens, those tokens will terminate with "=?".private static java.lang.String
ENCODED_TOKEN_MARKER
If the text contains any encoded tokens, those tokens will be marked with "=?".private static java.lang.String
LINEAR_WHITESPACE
The linear whitespace chars sequence.private static java.util.Map<java.lang.String,java.lang.String>
MIME2JAVA
Mappings between MIME and Java charset.private static java.lang.String
QUOTEDPRINTABLE_ENCODING_MARKER
The marker to indicate text is encoded with QuotedPrintable algorithm.private static java.lang.String
US_ASCII_CHARSET
TheUS-ASCII
charset identifier constant.
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Constructor Summary
Constructors Modifier Constructor Description private
MimeUtility()
Hidden constructor, this class must not be instantiated.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.String
decodeText(java.lang.String text)
Decode a string of text obtained from a mail header into its proper form.private static java.lang.String
decodeWord(java.lang.String word)
Parse a string using the RFC 2047 rules for an "encoded-word" type.private static java.lang.String
javaCharset(java.lang.String charset)
Translate a MIME standard character set name into the Java equivalent.
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Field Detail
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US_ASCII_CHARSET
private static final java.lang.String US_ASCII_CHARSET
TheUS-ASCII
charset identifier constant.- See Also:
- Constant Field Values
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BASE64_ENCODING_MARKER
private static final java.lang.String BASE64_ENCODING_MARKER
The marker to indicate text is encoded with BASE64 algorithm.- See Also:
- Constant Field Values
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QUOTEDPRINTABLE_ENCODING_MARKER
private static final java.lang.String QUOTEDPRINTABLE_ENCODING_MARKER
The marker to indicate text is encoded with QuotedPrintable algorithm.- See Also:
- Constant Field Values
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ENCODED_TOKEN_MARKER
private static final java.lang.String ENCODED_TOKEN_MARKER
If the text contains any encoded tokens, those tokens will be marked with "=?".- See Also:
- Constant Field Values
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ENCODED_TOKEN_FINISHER
private static final java.lang.String ENCODED_TOKEN_FINISHER
If the text contains any encoded tokens, those tokens will terminate with "=?".- See Also:
- Constant Field Values
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LINEAR_WHITESPACE
private static final java.lang.String LINEAR_WHITESPACE
The linear whitespace chars sequence.- See Also:
- Constant Field Values
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MIME2JAVA
private static final java.util.Map<java.lang.String,java.lang.String> MIME2JAVA
Mappings between MIME and Java charset.
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Method Detail
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decodeText
public static java.lang.String decodeText(java.lang.String text) throws java.io.UnsupportedEncodingException
Decode a string of text obtained from a mail header into its proper form. The text generally will consist of a string of tokens, some of which may be encoded using base64 encoding.- Parameters:
text
- The text to decode.- Returns:
- The decoded text string.
- Throws:
java.io.UnsupportedEncodingException
- if the detected encoding in the input text is not supported.
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decodeWord
private static java.lang.String decodeWord(java.lang.String word) throws ParseException, java.io.UnsupportedEncodingException
Parse a string using the RFC 2047 rules for an "encoded-word" type. This encoding has the syntax: encoded-word = "=?" charset "?" encoding "?" encoded-text "?="- Parameters:
word
- The possibly encoded word value.- Returns:
- The decoded word.
- Throws:
ParseException
java.io.UnsupportedEncodingException
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javaCharset
private static java.lang.String javaCharset(java.lang.String charset)
Translate a MIME standard character set name into the Java equivalent.- Parameters:
charset
- The MIME standard name.- Returns:
- The Java equivalent for this name.
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