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InflaterInputStream.java: New stub class.

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8
	* InflaterInputStream.java:  New stub class.
	* ZipInputStream.java:  New class.  Partly works.
	* ZipConstants.java:  Add two (internal) constants.
	* ZipEntry.java (timeFromDOS):  New static (non-public) method.
	* ZipFile.java:  Make it mostly work, except for compression.
	* ZipOutputStream.java:  Start implementation.

From-SVN: r26794
This commit is contained in:
Per Bothner 1999-05-05 17:15:45 -07:00
parent 0e9c6b0bf0
commit f7f65c793e
1 changed files with 32 additions and 0 deletions
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32
libjava/java/util/zip/ZipEntry.java
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@ -33,6 +33,7 @@ public class ZipEntry
String name;
long size = -1;
long time = -1;
long relativeOffset = -1;
ZipEntry next;
@ -80,5 +81,36 @@ public class ZipEntry
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; }
}