--- /dev/null
+package jalview.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.FileVisitOption;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.PathMatcher;
+import java.nio.file.Paths;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import jalview.bin.Console;
+
+public class FileUtils
+{
+ /*
+ * Given string glob pattern (see
+ * https://docs.oracle.com/javase/7/docs/api/java/nio/file/FileSystem.html#getPathMatcher(java.lang.String)
+ * ) return a List of Files that match the pattern.
+ * Note this is a java style glob, not necessarily a bash-style glob, though there are sufficient similarities.
+ */
+ public static List<File> getFilesFromGlob(String pattern)
+ {
+ return getFilesFromGlob(pattern, true);
+ }
+
+ public static List<File> getFilesFromGlob(String pattern,
+ boolean allowSingleFilenameThatDoesNotExist)
+ {
+ pattern = substituteHomeDir(pattern);
+ List<File> files = new ArrayList<>();
+ /*
+ * For efficiency of the Files.walkFileTree(), let's find the longest path that doesn't need globbing.
+ * We look for the first glob character * { ? and then look for the last File.separator before that.
+ * Then we can reset the path to look at and shorten the globbing pattern.
+ * Relative paths can be used in pattern, which work from the pwd (though these are converted into
+ * full paths in the match).
+ */
+ int firstGlobChar = -1;
+ boolean foundGlobChar = false;
+ for (char c : new char[] { '*', '{', '?' })
+ {
+ if (pattern.indexOf(c) > -1
+ && (pattern.indexOf(c) < firstGlobChar || !foundGlobChar))
+ {
+ firstGlobChar = pattern.indexOf(c);
+ foundGlobChar = true;
+ }
+ }
+ int lastFS = pattern.lastIndexOf(File.separatorChar, firstGlobChar);
+ if (foundGlobChar)
+ {
+ String pS = pattern.substring(0, lastFS + 1);
+ String rest = pattern.substring(lastFS + 1);
+ Path parentDir = Paths.get(pS).toAbsolutePath();
+ if (parentDir.toFile().exists())
+ {
+ try
+ {
+ String glob = "glob:" + parentDir.toString() + File.separator
+ + rest;
+ PathMatcher pm = FileSystems.getDefault().getPathMatcher(glob);
+ int maxDepth = rest.contains("**") ? 1028
+ : (int) (rest.chars()
+ .filter(ch -> ch == File.separatorChar).count())
+ + 1;
+
+ Files.walkFileTree(parentDir,
+ EnumSet.of(FileVisitOption.FOLLOW_LINKS), maxDepth,
+ new SimpleFileVisitor<Path>()
+ {
+ @Override
+ public FileVisitResult visitFile(Path path,
+ BasicFileAttributes attrs) throws IOException
+ {
+ if (pm.matches(path))
+ {
+ files.add(path.toFile());
+ }
+ return FileVisitResult.CONTINUE;
+ }
+
+ @Override
+ public FileVisitResult visitFileFailed(Path file,
+ IOException exc) throws IOException
+ {
+ return FileVisitResult.CONTINUE;
+ }
+ });
+ } catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+ }
+ }
+ else
+ {
+ // no wildcards
+ File f = new File(pattern);
+ if (allowSingleFilenameThatDoesNotExist || f.exists())
+ {
+ files.add(f);
+ }
+ }
+ Collections.sort(files);
+
+ return files;
+ }
+
+ public static List<String> getFilenamesFromGlob(String pattern)
+ {
+ // convert list of Files to list of File.getPath() Strings
+ return getFilesFromGlob(pattern).stream().map(f -> f.getPath())
+ .collect(Collectors.toList());
+ }
+
+ public static String substituteHomeDir(String path)
+ {
+ return path.startsWith("~" + File.separator)
+ ? System.getProperty("user.home") + path.substring(1)
+ : path;
+ }
+
+ /*
+ * This method returns the basename of File file
+ */
+ public static String getBasename(File file)
+ {
+ return getBasenameOrExtension(file, false);
+ }
+
+ /*
+ * This method returns the extension of File file.
+ */
+ public static String getExtension(File file)
+ {
+ return getBasenameOrExtension(file, true);
+ }
+
+ public static String getBasenameOrExtension(File file, boolean extension)
+ {
+ if (file == null)
+ return null;
+
+ String value = null;
+ String filename = file.getName();
+ int lastDot = filename.lastIndexOf('.');
+ if (lastDot > 0) // don't truncate if starts with '.'
+ {
+ value = extension ? filename.substring(lastDot + 1)
+ : filename.substring(0, lastDot);
+ }
+ else
+ {
+ value = extension ? "" : filename;
+ }
+ return value;
+ }
+
+ /*
+ * This method returns the dirname of the first --append or --open value.
+ * Used primarily for substitutions in output filenames.
+ */
+ public static String getDirname(File file)
+ {
+ if (file == null)
+ return null;
+
+ String dirname = null;
+ try
+ {
+ File p = file.getParentFile();
+ File d = new File(substituteHomeDir(p.getPath()));
+ dirname = d.getCanonicalPath();
+ } catch (IOException e)
+ {
+ Console.debug(
+ "Exception when getting dirname of '" + file.getPath() + "'",
+ e);
+ dirname = "";
+ }
+ return dirname;
+ }
+}
git://source.jalview.org / jalview.git / blobdiff