Package org.apache.tools.zip
Class ZipUtil
- java.lang.Object
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- org.apache.tools.zip.ZipUtil
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public abstract class ZipUtil extends java.lang.ObjectUtility class for handling DOS and Java time conversions.- Since:
- Ant 1.8.1
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Constructor Summary
Constructors Constructor Description ZipUtil()
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Method Summary
Modifier and Type Method Description static longadjustToLong(int i)Assumes a negative integer really is a positive integer that has wrapped around and re-creates the original value.static longdosToJavaTime(long dosTime)Converts DOS time to Java time (number of milliseconds since epoch).static java.util.DatefromDosTime(ZipLong zipDosTime)Convert a DOS date/time field to a Date object.static byte[]toDosTime(long t)Convert a Date object to a DOS date/time field.static voidtoDosTime(long t, byte[] buf, int offset)Convert a Date object to a DOS date/time field.static ZipLongtoDosTime(java.util.Date time)Convert a Date object to a DOS date/time field.
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Method Detail
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toDosTime
public static ZipLong toDosTime(java.util.Date time)
Convert a Date object to a DOS date/time field.- Parameters:
time- theDateto convert- Returns:
- the date as a
ZipLong
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toDosTime
public static byte[] toDosTime(long t)
Convert a Date object to a DOS date/time field.Stolen from InfoZip's
fileio.c- Parameters:
t- number of milliseconds since the epoch- Returns:
- the date as a byte array
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toDosTime
public static void toDosTime(long t, byte[] buf, int offset)Convert a Date object to a DOS date/time field.Stolen from InfoZip's
fileio.c- Parameters:
t- number of milliseconds since the epochbuf- the output bufferoffset- The offset within the output buffer of the first byte to be written. must be non-negative and no larger thanbuf.length-4
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adjustToLong
public static long adjustToLong(int i)
Assumes a negative integer really is a positive integer that has wrapped around and re-creates the original value.This methods is no longer used as of Apache Ant 1.9.0
- Parameters:
i- the value to treat as unsigned int.- Returns:
- the unsigned int as a long.
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fromDosTime
public static java.util.Date fromDosTime(ZipLong zipDosTime)
Convert a DOS date/time field to a Date object.- Parameters:
zipDosTime- contains the stored DOS time.- Returns:
- a Date instance corresponding to the given time.
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dosToJavaTime
public static long dosToJavaTime(long dosTime)
Converts DOS time to Java time (number of milliseconds since epoch).- Parameters:
dosTime- long- Returns:
- long
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