/** {@inheritDoc} */
public override void putArchiveEntry(ArchiveEntry pEntry) //throws IOException
{
if (finished)
{
throw new java.io.IOException("Stream has already been finished");
}
ArArchiveEntry pArEntry = (ArArchiveEntry)pEntry;
if (prevEntry == null)
{
archiveOffset += writeArchiveHeader();
}
else
{
if (prevEntry.getLength() != entryOffset)
{
throw new java.io.IOException("length does not match entry (" + prevEntry.getLength() + " != " + entryOffset);
}
if (haveUnclosedEntry)
{
closeArchiveEntry();
}
}
prevEntry = pArEntry;
archiveOffset += writeEntryHeader(pArEntry);
entryOffset = 0;
haveUnclosedEntry = true;
}
/**
* Returns the next AR entry in this stream.
*
* @return the next AR entry.
* @throws IOException
* if the entry could not be read
*/
public ArArchiveEntry getNextArEntry() // throws IOException
{
if (currentEntry != null)
{
long entryEnd = entryOffset + currentEntry.getLength();
while (offset < entryEnd)
{
int x = read();
if (x == -1)
{
// hit EOF before previous entry was complete
// TODO: throw an exception instead?
return(null);
}
}
currentEntry = null;
}
if (offset == 0)
{
byte[] expected = ArchiveUtils.toAsciiBytes(ArArchiveEntry.HEADER);
byte[] realized = new byte[expected.Length];
int readJ = read(realized);
if (readJ != expected.Length)
{
throw new java.io.IOException("failed to read header. Occured at byte: " + getBytesRead());
}
for (int i = 0; i < expected.Length; i++)
{
if (expected[i] != realized[i])
{
throw new java.io.IOException("invalid header " + ArchiveUtils.toAsciiString(realized));
}
}
}
if (offset % 2 != 0)
{
if (read() < 0)
{
// hit eof
return(null);
}
}
if (input.available() == 0)
{
return(null);
}
byte[] name = new byte[16];
byte[] lastmodified = new byte[12];
byte[] userid = new byte[6];
byte[] groupid = new byte[6];
byte[] filemode = new byte[8];
byte[] length = new byte[10];
read(name);
read(lastmodified);
read(userid);
read(groupid);
read(filemode);
read(length);
{
byte[] expected = ArchiveUtils.toAsciiBytes(ArArchiveEntry.TRAILER);
byte[] realized = new byte[expected.Length];
int readJ = read(realized);
if (readJ != expected.Length)
{
throw new java.io.IOException("failed to read entry trailer. Occured at byte: " + getBytesRead());
}
for (int i = 0; i < expected.Length; i++)
{
if (expected[i] != realized[i])
{
throw new java.io.IOException("invalid entry trailer. not read the content? Occured at byte: " + getBytesRead());
}
}
}
entryOffset = offset;
// GNU ar stores multiple extended filenames in the data section of a file with the name "//", this record is referred to by future headers. A header references an extended filename by storing a "/" followed by a decimal offset to the start of the filename in the extended filename data section. The format of this "//" file itself is simply a list of the long filenames, each separated by one or more LF characters. Note that the decimal offsets are number of characters, not line or string number within the "//" file.
//
// GNU ar uses a '/' to mark the end of the filename; this allows for the use of spaces without the use of an extended filename.
// entry name is stored as ASCII string
String temp = ArchiveUtils.toAsciiString(name).trim();
if (temp.equals("//")) // GNU extended filenames entry
{
int bufflen = asInt(length); // Assume length will fit in an int
namebuffer = new byte[bufflen];
int readJ = read(namebuffer, 0, bufflen);
if (readJ != bufflen)
{
throw new java.io.IOException("Failed to read complete // record: expected=" + bufflen + " read=" + readJ);
}
currentEntry = new ArArchiveEntry(temp, bufflen);
return(getNextArEntry());
}
else if (temp.EndsWith("/")) // GNU terminator
{
temp = temp.substring(0, temp.length() - 1);
}
else if (temp.matches("^/\\d+")) // GNU long filename ref.
{
int offsetJ = java.lang.Integer.parseInt(temp.substring(1)); // get the offset
temp = getExtendedName(offsetJ); // convert to the long name
}
currentEntry = new ArArchiveEntry(temp, asLong(length), asInt(userid),
asInt(groupid), asInt(filemode, 8),
asLong(lastmodified));
return(currentEntry);
}
private long writeEntryHeader(ArArchiveEntry pEntry) //throws IOException
{
long offset = 0;
String n = pEntry.getName();
if (n.length() > 16)
{
throw new java.io.IOException("filename too long, > 16 chars: " + n);
}
offset += write(n);
offset = fill(offset, 16, ' ');
String m = "" + (pEntry.getLastModified());
if (m.length() > 12)
{
throw new java.io.IOException("modified too long");
}
offset += write(m);
offset = fill(offset, 28, ' ');
String u = "" + pEntry.getUserId();
if (u.length() > 6)
{
throw new java.io.IOException("userid too long");
}
offset += write(u);
offset = fill(offset, 34, ' ');
String g = "" + pEntry.getGroupId();
if (g.length() > 6)
{
throw new java.io.IOException("groupid too long");
}
offset += write(g);
offset = fill(offset, 40, ' ');
String fm = java.lang.Integer.toString(pEntry.getMode(), 8).ToString();
if (fm.length() > 8)
{
throw new java.io.IOException("filemode too long");
}
offset += write(fm);
offset = fill(offset, 48, ' ');
String s = "" + pEntry.getLength();
if (s.length() > 10)
{
throw new java.io.IOException("size too long");
}
offset += write(s);
offset = fill(offset, 58, ' ');
offset += write(ArArchiveEntry.TRAILER);
return(offset);
}