+ /** unpacks a Microsoft CAB file (possibly embedded in another file; we scan for 'MSCF' */
+ public static class CAB extends Res {
+ private Res parent;
+ CAB(Res parent) { this.parent = parent; }
+ private int swap_endian(int i) {
+ return ((i & 0xff) << 24) | ((i & 0xff00) << 8) | ((i & 0xff0000) >>> 8) | (i >>> 24);
+ }
+ public InputStream getInputStream(String path) throws IOException {
+ InputStream is = parent.getInputStream();
+ byte[] scan = new byte[4];
+ int ofs = 0;
+ for(int i=0; i<2; i++) {
+ // wierdly, .exe files have three MSCF's
+ while(scan[0] != 'M' || scan[1] != 'S' || scan[2] != 'C' || scan[3] != 'F') {
+ System.arraycopy(scan, 1, scan, 0, 3);
+ int read = is.read();
+ if (read == -1) throw new JS.Exn("MSCF header tag not found in file");
+ scan[3] = (byte)read;
+ ofs++;
+ }
+ scan[0] = 0;
+ }
+ Log.log(this, "found MSCF header at offset " + ofs);
+ return org.xwt.util.CAB.getFileInputStream(is, path, true);
+ }
+ }