Java Doc for ZipFile.java in  » Build » ANT » org » apache » tools » zip » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Build » ANT » org.apache.tools.zip 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.tools.zip.ZipFile

ZipFile
public class ZipFile (Code)
Replacement for java.util.ZipFile.

This class adds support for file name encodings other than UTF-8 (which is required to work on ZIP files created by native zip tools and is able to skip a preamble like the one found in self extracting archives. Furthermore it returns instances of org.apache.tools.zip.ZipEntry instead of java.util.zip.ZipEntry.

It doesn't extend java.util.zip.ZipFile as it would have to reimplement all methods anyway. Like java.util.ZipFile, it uses RandomAccessFile under the covers and supports compressed and uncompressed entries.

The method signatures mimic the ones of java.util.zip.ZipFile, with a couple of exceptions:

  • There is no getName method.
  • entries has been renamed to getEntries.
  • getEntries and getEntry return org.apache.tools.zip.ZipEntry instances.
  • close is allowed to throw IOException.



Constructor Summary
public  ZipFile(File f)
     Opens the given file for reading, assuming the platform's native encoding for file names.
public  ZipFile(String name)
     Opens the given file for reading, assuming the platform's native encoding for file names.
public  ZipFile(String name, String encoding)
     Opens the given file for reading, assuming the specified encoding for file names.
public  ZipFile(File f, String encoding)
     Opens the given file for reading, assuming the specified encoding for file names.

Method Summary
public  voidclose()
     Closes the archive.
public static  voidcloseQuietly(ZipFile zipfile)
    
protected static  DatefromDosTime(ZipLong zipDosTime)
     Convert a DOS date/time field to a Date object.
Parameters:
  zipDosTime - contains the stored DOS time.
public  StringgetEncoding()
     The encoding to use for filenames and the file comment.
public  EnumerationgetEntries()
     Returns all entries.
public  ZipEntrygetEntry(String name)
     Returns a named entry - or null if no entry by that name exists.
Parameters:
  name - name of the entry.
public  InputStreamgetInputStream(ZipEntry ze)
     Returns an InputStream for reading the contents of the given entry.
Parameters:
  ze - the entry to get the stream for.
protected  StringgetString(byte[] bytes)
     Retrieve a String from the given bytes using the encoding set for this ZipFile.


Constructor Detail
ZipFile
public ZipFile(File f) throws IOException(Code)
Opens the given file for reading, assuming the platform's native encoding for file names.
Parameters:
  f - the archive.
throws:
  IOException - if an error occurs while reading the file.



ZipFile
public ZipFile(String name) throws IOException(Code)
Opens the given file for reading, assuming the platform's native encoding for file names.
Parameters:
  name - name of the archive.
throws:
  IOException - if an error occurs while reading the file.



ZipFile
public ZipFile(String name, String encoding) throws IOException(Code)
Opens the given file for reading, assuming the specified encoding for file names.
Parameters:
  name - name of the archive.
Parameters:
  encoding - the encoding to use for file names
throws:
  IOException - if an error occurs while reading the file.



ZipFile
public ZipFile(File f, String encoding) throws IOException(Code)
Opens the given file for reading, assuming the specified encoding for file names.
Parameters:
  f - the archive.
Parameters:
  encoding - the encoding to use for file names
throws:
  IOException - if an error occurs while reading the file.




Method Detail
close
public void close() throws IOException(Code)
Closes the archive.
throws:
  IOException - if an error occurs closing the archive.



closeQuietly
public static void closeQuietly(ZipFile zipfile)(Code)
close a zipfile quietly; throw no io fault, do nothing on a null parameter
Parameters:
  zipfile - file to close, can be null



fromDosTime
protected static Date fromDosTime(ZipLong zipDosTime)(Code)
Convert a DOS date/time field to a Date object.
Parameters:
  zipDosTime - contains the stored DOS time. a Date instance corresponding to the given time.



getEncoding
public String getEncoding()(Code)
The encoding to use for filenames and the file comment. null if using the platform's default character encoding.



getEntries
public Enumeration getEntries()(Code)
Returns all entries. all entries as ZipEntry instances



getEntry
public ZipEntry getEntry(String name)(Code)
Returns a named entry - or null if no entry by that name exists.
Parameters:
  name - name of the entry. the ZipEntry corresponding to the given name - ornull if not present.



getInputStream
public InputStream getInputStream(ZipEntry ze) throws IOException, ZipException(Code)
Returns an InputStream for reading the contents of the given entry.
Parameters:
  ze - the entry to get the stream for. a stream to read the entry from.
throws:
  IOException - if unable to create an input stream from the zipenty
throws:
  ZipException - if the zipentry has an unsupported compression method



getString
protected String getString(byte[] bytes) throws ZipException(Code)
Retrieve a String from the given bytes using the encoding set for this ZipFile.
Parameters:
  bytes - the byte array to transform String obtained by using the given encoding
throws:
  ZipException - if the encoding cannot be recognized.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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