Java Code Examples for org.apache.commons.vfs2.FileSelectInfo#getFile()

/**
 * Checks to see if the file can be written to.
 *
 * @param fileInfo the File to check
 *
 * @return {@code true} if the file can be written to, otherwise {@code false}.
 * @throws FileSystemException Thrown for file system errors.
 */
@Override
public boolean accept(final FileSelectInfo fileInfo) throws FileSystemException {
    try (final FileObject file = fileInfo.getFile()) {
        final FileSystem fileSystem = file.getFileSystem();
        if (file.exists()) {
            if (!fileSystem.hasCapability(Capability.WRITE_CONTENT)) {
                return false;
            }
            return file.isWriteable();
        }
        if (!fileSystem.hasCapability(Capability.CREATE)) {
            return false;
        }
        return file.getParent().isWriteable();
    }
}
 

/**
 * Checks to see if the file is empty. A non-existing file is also considered empty.
 *
 * @param fileInfo the file or directory to check
 *
 * @return {@code true} if the file or directory is <i>empty</i>, otherwise {@code false}.
 * @throws FileSystemException Thrown for file system errors.
 */
@Override
public boolean accept(final FileSelectInfo fileInfo) throws FileSystemException {
    try (final FileObject file = fileInfo.getFile()) {
        if (!file.exists()) {
            return true;
        }
        if (file.getType() == FileType.FOLDER) {
            final FileObject[] files = file.getChildren();
            return files == null || files.length == 0;
        }
        try (final FileContent content = file.getContent();) {
            return content.isEmpty();
        }
    }
}
 

/**
 * Determines if a file or folder should be selected.
 */
@Override
public boolean includeFile(final FileSelectInfo fileInfo) throws FileSystemException {
    final FileObject file = fileInfo.getFile();
    if (file == currentFolder) {
        // Pop current folder
        assertEquals(0, children.size());
        currentFolder = currentFolder.getParent();
        currentFolderInfo = currentFolderInfo.getParent();
        children = stack.remove(0);
    }

    final String baseName = file.getName().getBaseName();

    final FileInfo childInfo = getChild(baseName);
    assertSame(childInfo.type, file.getType());

    final boolean isChild = children.remove(baseName);
    assertTrue(isChild);

    files.add(file);
    return true;
}
 

@Override public boolean includeFile(FileSelectInfo fileInfo) throws Exception {
    final FileObject file = fileInfo.getFile();
    if(isLanguageSpecDirectory(file)) {
        return true;
    }
    return file.getName().getExtension().equals("spoofax-language");
}
 

@Override public boolean includeFile(FileSelectInfo fileInfo) throws Exception {
    final FileObject file = fileInfo.getFile();
    return FileType.FILE.equals(file.getType()) && languageIdentifierService.identify(file, languages) != null;
}
 

@Override public boolean traverseDescendents(FileSelectInfo fileInfo) throws Exception {
    final int depth = fileInfo.getDepth();
    final FileObject resource = fileInfo.getFile();
    final FileName name = resource.getName();
    final String base = name.getBaseName();

    switch(depth) {
        case 1:
            switch(base) {
                case "include": // Spoofax/Stratego
                case ".cache": // Spoofax/Stratego
                case "bin": // Eclipse
                case ".settings": // Eclipse
                case "target": // Maven
                case ".mvn": // Maven
                case "build": // Gradle
                case ".gradle": // Gradle
                case "out": // IntelliJ
                case ".idea": // IntelliJ
                case ".git": // Git
                    return false;
            }
            break;
        case 3:
            switch(base) {
                // Ignore editor/java/trans and src-gen/stratego-java/trans.
                case "trans": {
                    final FileObject parent1 = resource.getParent();
                    if(parent1 != null) {
                        final String parent1base = parent1.getName().getBaseName();
                        if(parent1base.equals("java") || parent1base.equals("stratego-java")) {
                            final FileObject parent2 = parent1.getParent();
                            if(parent2 != null) {
                                final String parent2base = parent2.getName().getBaseName();
                                return !(parent2base.equals("editor") || parent2base.equals("src-gen"));
                            }
                        }
                    }
                    break;
                }
            }
            break;
    }

    return true;
}
 

@Override public boolean traverseDescendents(FileSelectInfo fileInfo) throws Exception {
    final FileObject file = fileInfo.getFile();
    // Do not traverse directory if the directory is a language specification with a component config file. This
    // directory will be selected instead.
    return !isLanguageSpecDirectory(file);
}
 

/**
 * Checks to see if the size of the file is favorable.
 * <p>
 * If size equals threshold and smaller files are required, file <b>IS NOT</b>
 * selected. If size equals threshold and larger files are required, file
 * <b>IS</b> selected.
 * </p>
 * <p>
 * Non-existing files return always false (will never be accepted).
 * </p>
 *
 * @param fileInfo the File to check
 *
 * @return true if the file name matches
 * @throws FileSystemException Thrown for file system errors.
 */
@Override
public boolean accept(final FileSelectInfo fileInfo) throws FileSystemException {
    try (final FileObject file = fileInfo.getFile()) {
        if (!file.exists()) {
            return false;
        }
        try (final FileContent content = file.getContent();) {
            final long length = content.getSize();
            final boolean smaller = length < size;
            return acceptLarger ? !smaller : smaller;
        }
    }
}