package eu.svjatoslav.meviz.htmlindexer;
import java.awt.image.BufferedImage;
+import java.io.BufferedReader;
import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
import java.io.IOException;
+import java.util.HashSet;
import java.util.zip.CRC32;
import javax.imageio.ImageIO;
+import eu.svjatoslav.meviz.htmlindexer.layouts.MixedLayout;
+
public class Utils {
- private static File lastLoadedFile;
+ private static File lastLoadedFile;
+
+ private static BufferedImage lastLoadedBufferedImage;
+
+ /**
+ * Load image into {@link BufferedImage} and return it. Caches last loaded
+ * image to speed up subsequent loading attempts.
+ *
+ * @throws ImageFormatError
+ * @throws IOException
+ */
+ public static BufferedImage getBufferedImage(final File file)
+ throws ImageFormatError, IOException {
+ if (file.equals(lastLoadedFile))
+ return lastLoadedBufferedImage;
+
+ System.out.println("Loading image: " + file.getPath());
+ lastLoadedBufferedImage = ImageIO.read(file);
+ lastLoadedFile = file;
+
+ if (lastLoadedBufferedImage == null)
+ throw new ImageFormatError("File: " + file
+ + " is not a valid image.");
+
+ return lastLoadedBufferedImage;
+ }
+
+ public static File getLayoutIndexFile(final Layout layout,
+ final File directoryToIndex) {
+
+ final String indexFilePath = directoryToIndex.getAbsolutePath()
+ + "/index" + layout.getFileNameSuffix() + ".html";
+
+ return new File(indexFilePath);
+ }
+
+ public static HashSet<Layout> getLayouts() {
+ final HashSet<Layout> layouts = new HashSet<Layout>();
+ layouts.add(new MixedLayout());
+ return layouts;
+ }
+
+ public static String getStringCrcAsHex(final String input) {
+
+ // create a new CRC-calculating object
+ final CRC32 crc = new CRC32();
+
+ // loop, calculating CRC for each byte of the string
+ // There is no CRC16.update(byte[]) method.
+ for (final byte b : input.getBytes())
+ crc.update(b);
+
+ // note use crc.value, not crc.getValue()
+ final String hex = Integer.toHexString((int) crc.getValue())
+ .toUpperCase();
- private static BufferedImage lastLoadedBufferedImage;
+ // System.out.println("Input string: " + input);
+ // System.out.println("Result: " + hex);
- /**
- * Load image into {@link BufferedImage} and return it. Caches last loaded
- * image to speed up subsequent loading attempts.
- *
- * @throws ImageFormatError
- * @throws IOException
- */
- public static BufferedImage getBufferedImage(final File file) throws ImageFormatError, IOException {
- if (file.equals(lastLoadedFile)) {
- return lastLoadedBufferedImage;
- }
+ return hex;
+ }
- System.out.println("Loading image: " + file.getPath());
- lastLoadedBufferedImage = ImageIO.read(file);
- lastLoadedFile = file;
+ public static File getThumbnailsDirectory(final File directoryToIndex) {
+ return new File(getThumbnailsDirectoryPath(directoryToIndex));
+ }
- if (lastLoadedBufferedImage == null)
- throw new ImageFormatError("File: " + file + " is not a valid image.");
+ public static String getThumbnailsDirectoryPath(final File directoryToIndex) {
+ return directoryToIndex.getAbsolutePath() + "/"
+ + Constants.THUMBNAILS_DIRECTORY_NAME + "/";
+ }
- return lastLoadedBufferedImage;
- }
+ public static boolean isMevizGeneratedIndexFile(final File indexFile)
+ throws FileNotFoundException, IOException {
- public static String getStringCrcAsHex(final String input) {
+ boolean isMevizFile = false;
- // create a new CRC-calculating object
- final CRC32 crc = new CRC32();
+ final FileReader fileReader = new FileReader(indexFile);
+ final BufferedReader reader = new BufferedReader(fileReader);
- // loop, calculating CRC for each byte of the string
- // There is no CRC16.update(byte[]) method.
- for (final byte b : input.getBytes()) {
- crc.update(b);
- }
+ parseFile: {
+ while (true) {
+ final String line = reader.readLine();
- // note use crc.value, not crc.getValue()
- final String hex = Integer.toHexString((int) crc.getValue()).toUpperCase();
+ if (line == null)
+ break parseFile;
- // System.out.println("Input string: " + input);
- // System.out.println("Result: " + hex);
+ if (line.contains(Constants.HTML_MAGIC_STRING)) {
+ isMevizFile = true;
+ break parseFile;
+ }
+ }
+ }
- return hex;
- }
+ reader.close();
+ fileReader.close();
+ return isMevizFile;
+ }
}