protected Header readHeaderFromStream(InputStream is) throws IOException {
ReadableByteChannel channel = Channels.newChannel(is);
// Read header fixed portion
ByteBuffer headerBuffer = ShapefileUtils.readByteChannelToBuffer(channel, FIXED_HEADER_LENGTH);
Header header = this.readHeaderFromBuffer(headerBuffer);
// Read fields description header
int fieldsHeaderLength = header.headerLength - FIXED_HEADER_LENGTH;
header.fieldsHeaderBuffer = ShapefileUtils.readByteChannelToBuffer(channel, fieldsHeaderLength);
return header;
}
protected List<DBaseRecord> readRecordsFromStream(InputStream is) throws IOException {
List<DBaseRecord> records = new ArrayList<DBaseRecord>();
ByteBuffer recordBuffer = ByteBuffer.allocate(this.getRecordLength());
ReadableByteChannel channel = Channels.newChannel(is);
// Read all records
for (int i = 0; i < this.getNumberOfRecords(); i++) {
// Read record
recordBuffer.rewind();
ShapefileUtils.readByteChannelToBuffer(channel, this.getRecordLength(), recordBuffer);
records.add(DBaseRecord.fromBuffer(this, recordBuffer, i + 1));
}
return records;
}