FileNameFiller.java

package codegen.codetemplates.templatecompletion.replacementrule;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import static CIAPI.Java.logging.Log.*;

/**
 * Similar to a Replacement. Its job is to turn a filename specification into an actual valid
 * filename.
 * 
 * @author Justin Nelson
 * 
 */
public class FileNameFiller {

	private String initialString;
	/**
	 * This double list represents the directories and the inner concatenations that might exist
	 */
	private List<List<SimpleReplacement>> fileNameParts;
	/**
	 * We track this because it gets consumed by the split, and we need to add it back in at the end
	 */
	private boolean beganWithSlash;

	/**
	 * Creates a file name filler from the specified path in the Replacement file
	 * 
	 * @param fileName
	 *            the name of the place where the replacement file should be saved
	 */
	public FileNameFiller(String fileName, File replRootLocation) {
		this.initialString = fileName;
		String[] fileParts = fileName.split("(/|\\\\)");
		fileNameParts = new ArrayList<List<SimpleReplacement>>();
		// process each specified directory
		for (String s : fileParts) {
			List<SimpleReplacement> innerList = new ArrayList<SimpleReplacement>();
			String[] concatParts = s.split("\\+");
			// process any contats in the directory
			for (String concatPart : concatParts) {
				innerList.add(new SimpleReplacement(concatPart, concatPart, null));
			}
			fileNameParts.add(innerList);
		}
		beganWithSlash = fileName.startsWith("/");
	}

	/**
	 * Will return the correct filename for the object
	 * 
	 * @param obj
	 *            the object to resolve the name for
	 * @return the real filename for the object
	 */
	public File resolveFileName(Object obj) {
		String name = "";
		for (List<SimpleReplacement> directoryPart : fileNameParts) {
			for (SimpleReplacement repl : directoryPart) {
				name += repl.resolveValue(obj).toString();
			}
			name += "/";
		}
		File result = new File(beganWithSlash ? "/" + name : name);
		trace("Turned string '" + initialString + "' into '" + result.getPath() + "'");
		return result;
	}
}