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| 1 | +package org.scijava.plugins.commands.io; |
| 2 | + |
| 3 | +import java.io.File; |
| 4 | +import java.io.FileFilter; |
| 5 | +import java.io.IOException; |
| 6 | +import java.nio.file.Files; |
| 7 | + |
| 8 | +import org.scijava.ItemIO; |
| 9 | +import org.scijava.command.Command; |
| 10 | +import org.scijava.command.ContextCommand; |
| 11 | +import org.scijava.log.LogService; |
| 12 | +import org.scijava.plugin.Parameter; |
| 13 | +import org.scijava.plugin.Plugin; |
| 14 | +import org.scijava.widget.FileWidget; |
| 15 | + |
| 16 | +/** |
| 17 | + * Returns a list of files with the given extensions |
| 18 | + * |
| 19 | + * @author Jan Eglinger |
| 20 | + */ |
| 21 | +@Plugin(type = Command.class, headless = true) |
| 22 | +public class FileListProvider extends ContextCommand { |
| 23 | + |
| 24 | + @Parameter |
| 25 | + private LogService logService; |
| 26 | + |
| 27 | + @Parameter(style = FileWidget.DIRECTORY_STYLE) |
| 28 | + private File inputFolder; |
| 29 | + |
| 30 | + @Parameter(required = false) |
| 31 | + private String extensions = ""; |
| 32 | + |
| 33 | + @Parameter(required = false) |
| 34 | + private boolean recursive = true; |
| 35 | + |
| 36 | + @Parameter(type = ItemIO.OUTPUT) |
| 37 | + private File[] files; |
| 38 | + |
| 39 | + @Override |
| 40 | + public void run() { |
| 41 | + String[] extensionList = extensions.trim().split("/"); |
| 42 | + |
| 43 | + // Create FileFilter from extensions |
| 44 | + FileFilter filter = new FileFilter() { |
| 45 | + |
| 46 | + @Override |
| 47 | + public boolean accept(File pathname) { |
| 48 | + if (extensionList.length == 0) |
| 49 | + return pathname.isFile(); |
| 50 | + |
| 51 | + for (String ext : extensionList) { |
| 52 | + if (pathname.getName().toLowerCase() |
| 53 | + .endsWith(ext.toLowerCase()) |
| 54 | + && pathname.isFile()) |
| 55 | + return true; |
| 56 | + } |
| 57 | + return false; |
| 58 | + } |
| 59 | + }; |
| 60 | + |
| 61 | + if (recursive) { |
| 62 | + // Recursively list files |
| 63 | + try { |
| 64 | + files = (Files.walk(inputFolder.toPath()).filter(path -> filter |
| 65 | + .accept(path.toFile()))).map(path -> path.toFile()) |
| 66 | + .toArray(File[]::new); |
| 67 | + } catch (IOException exc) { |
| 68 | + logService |
| 69 | + .error("Error when trying to retrieve file list", exc); |
| 70 | + } |
| 71 | + } else { |
| 72 | + // Get non-recursive only for this folder |
| 73 | + files = inputFolder.listFiles(filter); |
| 74 | + } |
| 75 | + } |
| 76 | +} |
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