org.jsoftware.command.HelpParseCommand Maven / Gradle / Ivy

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package org.jsoftware.command;
import org.jsoftware.impl.DefaultPatchParser;
import org.jsoftware.impl.PatchParser.ParseResult;
import org.jsoftware.impl.PatchStatement;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;


/**
 * Display parsed patch
 * @author szalik
 */
public class HelpParseCommand extends AbstractCommand {

	public void execute() throws CommandExecutionException, CommandFailureException {
		String file = System.getProperty("maven.dbpatch.file");
		if (file == null) {
			throw new CommandFailureException("Set system property \"maven.dbpatch.file\" to file you want to parse.");
		}
		File f = new File(file);
		if (! f.exists()) {
			throw new CommandFailureException("File " + f.getAbsolutePath() + " not found.");
		}
		DefaultPatchParser parser = new DefaultPatchParser();
		try {
			ParseResult pr = parser.parse(new FileInputStream(f), null);
			log.info("Statements count: " + pr.executableCount());
			for(PatchStatement ps : pr.getStatements()) {
				log.info("{ " + ps +" }");
			}
		} catch (IOException e) {
			throw new CommandExecutionException("Exception", e);
		}
	}
	


	
    
}