private static void ReadModule(DocumentInputStream dis, String name, ModuleMap modules)
{
Module module = modules.Get(name);
// TODO Refactor this to fetch dir then do the rest
if (module == null)
{
// no DIR stream with offsets yet, so store the compressed bytes for later
module = new Module();
modules.Put(name, module);
module.Read(dis);
}
else
{
if (module.offset == null)
{
//This should not happen. bug 59858
throw new IOException("Module offset for '" + name + "' was never Read.");
}
// we know the offset already, so decompress immediately on-the-fly
long skippedBytes = dis.Skip(module.offset.Value);
if (skippedBytes != module.offset)
{
throw new IOException("tried to skip " + module.offset + " bytes, but actually skipped " + skippedBytes + " bytes");
}
InputStream stream = new RLEDecompressingInputStream(dis);
module.Read(stream);
stream.Close();
}
}
/**
* Reads module from DIR node in input stream and Adds it to the modules map for decompression later
* on the second pass through this function, the module will be decompressed
*
* Side-effects: Adds a new module to the module map or Sets the buf field on the module
* to the decompressed stream contents (the VBA code for one module)
*
* @param in the Run-length encoded input stream to read from
* @param streamName the stream name of the module
* @param modules a map to store the modules
* @throws IOException
*/
private static void ReadModule(RLEDecompressingInputStream in1, String streamName, ModuleMap modules)
{
int moduleOffset = in1.ReadInt();
Module module = modules.Get(streamName);
if (module == null)
{
// First time we've seen the module. Add it to the ModuleMap and decompress it later
module = new Module();
module.offset = moduleOffset;
modules.Put(streamName, module);
// Would Adding module.Read(in1) here be correct?
}
else
{
// Decompress a previously found module and store the decompressed result into module.buf
InputStream stream = new RLEDecompressingInputStream(
new MemoryStream(module.buf, moduleOffset, module.buf.Length - moduleOffset)
);
module.Read(stream);
stream.Close();
}
}
