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package bjc.utils.ioutils;
import java.io.Reader;
/**
* Utility methods for constructing instances of {@link BlockReader}
*
* @author bjculkin
*
*/
public class BlockReaders {
/**
* Create a new simple block reader that works off a regex.
*
* @param blockDelim
* The regex that separates blocks.
*
* @param source
* The reader to get blocks from.
*
* @return A configured simple reader.
*/
public static SimpleBlockReader simple(String blockDelim, Reader source) {
return new SimpleBlockReader(blockDelim, source);
}
/**
* Create a new pushback block reader.
*
* @param src
* The block reader to read blocks from.
*
* @return A configured pushback reader.
*/
public static PushbackBlockReader pushback(BlockReader src) {
return new PushbackBlockReader(src);
}
/**
* Create a new triggered block reader.
*
* @param source
* The block reader to read blocks from.
*
* @param action
* The action to execute before reading a block.
*
* @return A configured triggered block reader.
*/
public static BlockReader trigger(BlockReader source, Runnable action) {
return new TriggeredBlockReader(source, action);
}
/**
* Create a new layered block reader.
*
* @param primary
* The first source to read blocks from.
*
* @param secondary
* The second source to read blocks from.
*
* @return A configured layered block reader.
*/
public static BlockReader layered(BlockReader primary, BlockReader secondary) {
return new LayeredBlockReader(primary, secondary);
}
/**
* Create a new serial block reader.
*
* @param readers
* The readers to pull from, in the order to pull from
* them.
*
* @return A configured serial block reader.
*/
public static BlockReader serial(BlockReader... readers) {
return new SerialBlockReader(readers);
}
}
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