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/* Copyright (C) 1999 Cygnus Solutions
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.util.zip;
/**
* @author Per Bothner
* @date January 6, 1999.
*/
/*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*/
public class ZipEntry implements ZipConstants
{
// These values were determined using a simple test program.
public static final int STORED = 0;
public static final int DEFLATED = 8;
String comment;
long compressedSize = -1;
long crc = -1;
byte[] extra;
int method = -1;
String name;
long size = -1;
long time = -1;
long relativeOffset = -1;
ZipEntry next;
public ZipEntry (String name)
{
if (name == null)
throw new NullPointerException ();
if (name.length() > 65535)
throw new IllegalArgumentException ();
this.name = name;
}
public ZipEntry (ZipEntry ent)
{
comment = ent.comment;
compressedSize = ent.compressedSize;
crc = ent.crc;
extra = ent.extra;
method = ent.method;
size = ent.size;
time = ent.time;
relativeOffset = ent.relativeOffset;
}
public String getComment () { return comment; }
public long getCompressedSize () { return compressedSize; }
public long getCrc () { return crc; }
public byte[] getExtra() { return extra; }
public int getMethod () { return method; }
public String getName () { return name; }
public long getSize () { return size; }
public long getTime () { return time; }
public boolean isDirectory ()
{
if (name != null)
{
int nlen = name.length();
if (nlen > 0 && name.charAt(nlen-1) == '/')
return true;
}
return false;
}
public void setComment (String comment)
{
if (comment != null && comment.length() > 65535)
throw new IllegalArgumentException ();
this.comment = comment;
}
public void setCrc (long crc)
{
if (crc < 0 || crc > 0xffffffff)
throw new IllegalArgumentException ();
this.crc = crc;
}
public void setExtra (byte[] extra)
{
if (extra != null && extra.length > 65535)
throw new IllegalArgumentException ();
this.extra = extra;
}
public void setMethod (int method)
{
if (method != DEFLATED && method != STORED)
throw new IllegalArgumentException ();
this.method = method;
}
public void setSize (long size)
{
if (size < 0 || size > 0xffffffff)
throw new IllegalArgumentException ();
this.size = size;
}
public void setTime (long time)
{
this.time = time;
}
private final static short[] daysToMonthStart = {
//Jan Feb Mar Apr May Jun Jul
0, 31, 31+28, 2*31+28, 2*31+28+30, 3*31+28+30, 3*31+28+2*30,
// Aug Sep Oct Nov Dec
4*31+28+2*30, 5*31+28+2*30, 5*31+28+3*30, 6*31+28+3*30, 6*31+28+4*30};
/** Convert a DOS-style type value to milliseconds since 1970. */
static long timeFromDOS (int date, int time)
{
int sec = 2 * (time & 0x1f);
int min = (time >> 5) & 0x3f;
int hrs = (time >> 11) & 0x1f;
int day = date & 0x1f;
int mon = ((date >> 5) & 0xf) - 1;
int year = ((date >> 9) & 0x7f) + 10; /* Since 1970. */
// Guard against invalid or missing date causing IndexOutOfBoundsException.
if (mon < 0 || mon > 11)
return -1;
long mtime = (((hrs * 60) + min) * 60 + sec) * 1000;
// Leap year calculations are rather trivial in this case ...
int days = 365 * year + ((year+1)>>2);
days += daysToMonthStart[mon];
if ((year & 3) == 0 && mon > 1)
days++;
days += day;
return (days * 24*60*60L + ((hrs * 60) + min) * 60 + sec) * 1000L;
}
public String toString () { return name; }
}
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