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java.lang.Objectorg.apache.commons.compress.archivers.zip.FallbackZipEncoding
class FallbackZipEncoding
A fallback ZipEncoding, which uses a java.io means to encode names.
This implementation is not suitable for encodings other than utf-8, because java.io encodes unmappable character as question marks leading to unreadable ZIP entries on some operating systems.
Furthermore this implementation is unable to tell whether a given name can be safely encoded or not.
This implementation acts as a last resort implementation, when
neither Simple8BitZipEnoding
nor NioZipEncoding
is
available.
The methods of this class are reentrant.
Field Summary | |
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private java.lang.String |
charset
|
Constructor Summary | |
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FallbackZipEncoding()
Construct a fallback zip encoding, which uses the platform's default charset. |
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FallbackZipEncoding(java.lang.String charset)
Construct a fallback zip encoding, which uses the given charset. |
Method Summary | |
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boolean |
canEncode(java.lang.String name)
Check, whether the given string may be losslessly encoded using this encoding. |
java.lang.String |
decode(byte[] data)
|
java.nio.ByteBuffer |
encode(java.lang.String name)
Encode a filename or a comment to a byte array suitable for storing it to a serialized zip entry. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final java.lang.String charset
Constructor Detail |
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public FallbackZipEncoding()
public FallbackZipEncoding(java.lang.String charset)
charset
- The name of the charset or null
for
the platform's default character set.Method Detail |
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public boolean canEncode(java.lang.String name)
ZipEncoding
canEncode
in interface ZipEncoding
name
- A filename or ZIP comment.
ZipEncoding.canEncode(java.lang.String)
public java.nio.ByteBuffer encode(java.lang.String name) throws java.io.IOException
ZipEncoding
Examples for CP 437 (in pseudo-notation, right hand side is C-style notation):
encode("?_for_Dollar.txt") = "%U20AC_for_Dollar.txt" encode("?lf?sser.txt") = "\231lf\204sser.txt"
encode
in interface ZipEncoding
name
- A filename or ZIP comment.
%Uxxxx
. It is
assumed, that the byte buffer is positioned at the
beginning of the encoded result, the byte buffer has a
backing array and the limit of the byte buffer points
to the end of the encoded result.
java.io.IOException
ZipEncoding.encode(java.lang.String)
public java.lang.String decode(byte[] data) throws java.io.IOException
decode
in interface ZipEncoding
data
- The byte values to decode.
java.io.IOException
ZipEncoding.decode(byte[])
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