Example usage for org.apache.commons.vfs2 FileObject exists

Introduction

In this page you can find the example usage for org.apache.commons.vfs2 FileObject exists.

Prototype

boolean exists() throws FileSystemException;

Source Link

Document

Determines if this file exists.

Usage

From source file:org.freedesktop.AbstractFreedesktopService.java

protected void checkAndAddBase(FileObject file) throws IOException, ParseException {
    if (file.exists()) {
        addBase(file);//  ww w.j a  va  2  s  .c o  m
    }
}

From source file:org.freedesktop.cursors.DefaultCursorService.java

protected Collection<CursorTheme> scanBase(FileObject base) throws IOException {
    List<CursorTheme> themes = new ArrayList<CursorTheme>();
    for (FileObject dir : listDirs(base)) {
        FileObject cursorTheme = dir.resolveFile("cursor.theme");
        FileObject cursorsDir = dir.resolveFile("cursors");
        if (cursorTheme.exists() || cursorsDir.exists()) {
            try {
                themes.add(new CursorTheme(dir));
            } catch (FileNotFoundException fnfe) {
                // Skip
                Log.debug("Skipping " + dir + " because index.theme is missing.");
            } catch (IOException ioe) {
                Log.warn("Invalid theme directory " + dir.getName().getPath() + "." + ioe.getMessage());
            } catch (ParseException ioe) {
                Log.warn("Invalid theme definition in " + dir.getName().getPath() + ". " + ioe.getMessage());
            }//w w w . j  av  a2  s  . c om
        } else {
            // Skip
            Log.debug("Skipping " + dir + " because it is an icon theme.");
        }
    }
    return themes;
}

From source file:org.freedesktop.icons.DefaultIconService.java

public boolean isIconExists(String name, int size) throws IOException {
    String key = name + "_" + size;
    FileObject file = cache.get(key);
    ;//  w  ww. j  av a  2  s  .c  o m
    if (file != null && file.exists()) {
        return true;
    }
    IconTheme theme = getSelectedTheme();
    if (theme != null) {
        file = findIconHelper(name, size, theme);
        if (file != null) {
            cache.put(key, file);
            return true;
        }
    }
    try {
        file = lookupFallbackIcon(name);
        if (file != null) {
            cache.put(key, file);
            return true;
        }
    } catch (IOException ioe) {
    }
    return false;
}

From source file:org.freedesktop.icons.DefaultIconService.java

protected Collection<IconTheme> scanBase(FileObject base) throws IOException {
    List<IconTheme> themes = new ArrayList<IconTheme>();
    FileObject[] listDirs = listDirs(base);
    for (FileObject dir : listDirs) {
        // TODO cursor themes not supported here
        FileObject cursorTheme = dir.resolveFile("cursor.theme");
        FileObject cursorsDir = dir.resolveFile("cursors");
        if (cursorTheme.exists() || cursorsDir.exists()) {
            // Skip
            Log.debug("Skipping " + dir + " because it is a cursor theme.");
            continue;
        }//ww w  .  jav  a2  s. co m

        try {
            themes.add(new IconTheme(dir));
        } catch (FileNotFoundException fnfe) {
            // Skip
            Log.debug("Skipping " + dir + " because index.theme is missing.");
        } catch (IOException ioe) {
            Log.warn("Invalid theme directory " + dir.getName().getPath() + "." + ioe.getMessage());
        }
    }
    return themes;
}

From source file:org.freedesktop.icons.DefaultIconService.java

FileObject lookupFallbackIcon(String iconname) throws IOException {
    for (FileObject base : bases.keySet()) {
        for (String extension : SUPPORTED_EXTENSIONS) {
            FileObject f = base.resolveFile(iconname + "." + extension);
            if (f.exists()) {
                return f;
            }//from   w ww.  j  a  v a2s. com
        }
    }
    throw new IOException("No theme or fallback icon for " + iconname + ".");
}

From source file:org.freedesktop.icons.IconTheme.java

public IconTheme(FileObject... base) throws IOException {
    super(ICON_THEME, base);
    for (FileObject b : base) {
        FileObject f = b.resolveFile("index.theme");
        if (f.exists()) {
            themeFile = f;// w ww.j av a 2s .  c  o m
            break;
        }
    }
    if (themeFile == null) {
        throw new FileNotFoundException();
    }
}

From source file:org.freedesktop.icons.IconTheme.java

public FileObject lookupIcon(String icon, int size) throws IOException {
    checkLoaded();//  w w w .j  a v  a 2s .c  om
    for (Directory directory : getDirectories()) {
        if (directory.isMatchesSize(size)) {
            FileObject file = directory.findIcon(icon);
            if (file != null) {
                return file;
            }
        }
    }

    int minimalSize = Integer.MAX_VALUE;
    FileObject closestFile = null;
    FileObject firstFile = null;
    for (Directory directory : getDirectories()) {
        for (String ext : DefaultIconService.SUPPORTED_EXTENSIONS) {
            for (FileObject base : getBases()) {
                FileObject file = base.resolveFile(directory.getKey() + File.separator + icon + "." + ext);
                int directorySizeDistance = directorySizeDistance(directory, size);
                if (file.exists()) {
                    if (directorySizeDistance < minimalSize) {
                        closestFile = file;
                        minimalSize = directorySizeDistance;
                    } else {
                        if (firstFile == null) {
                            firstFile = file;
                        }
                    }
                }
            }
        }
    }

    return closestFile == null ? firstFile : closestFile;
}

From source file:org.freedesktop.wallpapers.Wallpaper.java

public Wallpaper(FileObject... base) throws IOException, ParseException {
    super(WALLPAPER, base);
    for (FileObject b : base) {
        FileObject f = b.getParent().resolveFile(b.getName() + ".desktop");
        if (f.exists()) {
            themeFile = f;//from ww  w .j  a v a  2 s .c  om
            break;
        }
    }
    if (themeFile == null) {
        throw new FileNotFoundException();
    }
}

From source file:org.fuin.vfs2.filter.AgeFileFilter.java

/**
 * Tests if the specified <code>File</code> is newer than the specified time
 * reference.//from w  w  w . jav a 2  s. c  o m
 * 
 * @param fileObject
 *            the <code>File</code> of which the modification date must be
 *            compared, must not be {@code null}
 * @param timeMillis
 *            the time reference measured in milliseconds since the epoch
 *            (00:00:00 GMT, January 1, 1970)
 * @return true if the <code>File</code> exists and has been modified after
 *         the given time reference.
 * @throws IllegalArgumentException
 *             if the file is {@code null}
 */
private static boolean isFileNewer(final FileObject fileObject, final long timeMillis) {
    if (fileObject == null) {
        throw new IllegalArgumentException("No specified file");
    }
    try {
        if (!fileObject.exists()) {
            return false;
        }
        final FileContent content = fileObject.getContent();
        try {
            final long lastModified = content.getLastModifiedTime();
            return lastModified > timeMillis;
        } finally {
            content.close();
        }
    } catch (final FileSystemException ex) {
        throw new RuntimeException(ex);
    }
}

From source file:org.fuin.vfs2.filter.EmptyFileFilter.java

/**
 * Checks to see if the file is empty. A non-existing file is also
 * considered empty.//from  www. j av a 2s. c om
 * 
 * @param fileInfo
 *            the file or directory to check
 * 
 * @return {@code true} if the file or directory is <i>empty</i>, otherwise
 *         {@code false}.
 */
@Override
public boolean accept(final FileSelectInfo fileInfo) {
    final FileObject file = fileInfo.getFile();
    try {
        if (!file.exists()) {
            return true;
        }
        if (file.getType() == FileType.FOLDER) {
            final FileObject[] files = file.getChildren();
            return files == null || files.length == 0;
        }
        final FileContent content = file.getContent();
        try {
            return content.getSize() == 0;
        } finally {
            content.close();
        }
    } catch (final FileSystemException ex) {
        throw new RuntimeException(ex);
    }
}