/**
* Parse an entry's header information from a header buffer.
*
* @param header The tar entry header buffer to get information from.
*/
public void parseTarHeader(byte[] header) {
int offset = 0;
this.name = TarUtils.parseName(header, offset, NAMELEN);
offset += NAMELEN;
this.mode = (int) TarUtils.parseOctal(header, offset, MODELEN);
offset += MODELEN;
this.userId = (int) TarUtils.parseOctal(header, offset, UIDLEN);
offset += UIDLEN;
this.groupId = (int) TarUtils.parseOctal(header, offset, GIDLEN);
offset += GIDLEN;
this.size = TarUtils.parseOctal(header, offset, SIZELEN);
offset += SIZELEN;
this.modTime = TarUtils.parseOctal(header, offset, MODTIMELEN);
offset += MODTIMELEN;
this.checkSum = (int) TarUtils.parseOctal(header, offset, CHKSUMLEN);
offset += CHKSUMLEN;
this.linkFlag = header[offset++];
this.linkName = TarUtils.parseName(header, offset, NAMELEN);
offset += NAMELEN;
this.magic = TarUtils.parseName(header, offset, MAGICLEN);
offset += MAGICLEN;
this.userName = TarUtils.parseName(header, offset, UNAMELEN);
offset += UNAMELEN;
this.groupName = TarUtils.parseName(header, offset, GNAMELEN);
offset += GNAMELEN;
this.devMajor = (int) TarUtils.parseOctal(header, offset, DEVLEN);
offset += DEVLEN;
this.devMinor = (int) TarUtils.parseOctal(header, offset, DEVLEN);
}
private void parseTarHeader(byte[] header, ZipEncoding encoding, final boolean oldStyle)
throws IOException {
int offset = 0;
name =
oldStyle
? TarUtils.parseName(header, offset, NAMELEN)
: TarUtils.parseName(header, offset, NAMELEN, encoding);
offset += NAMELEN;
mode = (int) TarUtils.parseOctalOrBinary(header, offset, MODELEN);
offset += MODELEN;
userId = (int) TarUtils.parseOctalOrBinary(header, offset, UIDLEN);
offset += UIDLEN;
groupId = (int) TarUtils.parseOctalOrBinary(header, offset, GIDLEN);
offset += GIDLEN;
size = TarUtils.parseOctalOrBinary(header, offset, SIZELEN);
offset += SIZELEN;
modTime = TarUtils.parseOctalOrBinary(header, offset, MODTIMELEN);
offset += MODTIMELEN;
offset += CHKSUMLEN;
linkFlag = header[offset++];
linkName =
oldStyle
? TarUtils.parseName(header, offset, NAMELEN)
: TarUtils.parseName(header, offset, NAMELEN, encoding);
offset += NAMELEN;
magic = TarUtils.parseName(header, offset, MAGICLEN);
offset += MAGICLEN;
version = TarUtils.parseName(header, offset, VERSIONLEN);
offset += VERSIONLEN;
userName =
oldStyle
? TarUtils.parseName(header, offset, UNAMELEN)
: TarUtils.parseName(header, offset, UNAMELEN, encoding);
offset += UNAMELEN;
groupName =
oldStyle
? TarUtils.parseName(header, offset, GNAMELEN)
: TarUtils.parseName(header, offset, GNAMELEN, encoding);
offset += GNAMELEN;
devMajor = (int) TarUtils.parseOctalOrBinary(header, offset, DEVLEN);
offset += DEVLEN;
devMinor = (int) TarUtils.parseOctalOrBinary(header, offset, DEVLEN);
offset += DEVLEN;
int type = evaluateType(header);
switch (type) {
case FORMAT_OLDGNU:
{
offset += ATIMELEN_GNU;
offset += CTIMELEN_GNU;
offset += OFFSETLEN_GNU;
offset += LONGNAMESLEN_GNU;
offset += PAD2LEN_GNU;
offset += SPARSELEN_GNU;
isExtended = TarUtils.parseBoolean(header, offset);
offset += ISEXTENDEDLEN_GNU;
realSize = TarUtils.parseOctal(header, offset, REALSIZELEN_GNU);
offset += REALSIZELEN_GNU;
break;
}
case FORMAT_POSIX:
default:
{
String prefix =
oldStyle
? TarUtils.parseName(header, offset, PREFIXLEN)
: TarUtils.parseName(header, offset, PREFIXLEN, encoding);
// SunOS tar -E does not add / to directory names, so fix
// up to be consistent
if (isDirectory() && !name.endsWith("/")) {
name = name + "/";
}
if (prefix.length() > 0) {
name = prefix + "/" + name;
}
}
}
}
