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jrt classes: manage tab-completions & minor fixes and improvements
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groovy/src/main/java/org/jline/script/JrtJavaBasePackages.java
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/* | ||
* Copyright (c) 2002-2020, the original author or authors. | ||
* | ||
* This software is distributable under the BSD license. See the terms of the | ||
* BSD license in the documentation provided with this software. | ||
* | ||
* https://opensource.org/licenses/BSD-3-Clause | ||
*/ | ||
package org.jline.script; | ||
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import org.jline.utils.Log; | ||
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import java.io.IOException; | ||
import java.net.URI; | ||
import java.nio.file.*; | ||
import java.nio.file.attribute.BasicFileAttributes; | ||
import java.util.ArrayList; | ||
import java.util.Arrays; | ||
import java.util.HashSet; | ||
import java.util.List; | ||
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import static java.nio.file.FileVisitResult.CONTINUE; | ||
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/** | ||
* | ||
* @author <a href="mailto:matti.rintanikkola@gmail.com">Matti Rinta-Nikkola</a> | ||
*/ | ||
public class JrtJavaBasePackages { | ||
public static List<Class<?>> getClassesForPackage(String pckgname) { | ||
FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/")); | ||
List<String> dirs = new ArrayList<>(); | ||
dirs.add("java.base"); | ||
boolean nestedClasses = true; | ||
boolean onlyCurrent = false; | ||
if (pckgname.endsWith(".*")) { | ||
onlyCurrent = true; | ||
nestedClasses = false; | ||
pckgname = pckgname.substring(0, pckgname.length() - 2); | ||
} else if (pckgname.endsWith(".**")) { | ||
onlyCurrent = true; | ||
pckgname = pckgname.substring(0, pckgname.length() - 3); | ||
} | ||
dirs.addAll(Arrays.asList(pckgname.split("\\."))); | ||
Path path = fs.getPath("modules", dirs.toArray(new String[0])); | ||
FileVisitor fv = new FileVisitor(nestedClasses); | ||
try { | ||
if (onlyCurrent) { | ||
Files.walkFileTree(path, new HashSet<>(),1, fv); | ||
} else { | ||
Files.walkFileTree(path, fv); | ||
} | ||
} catch (IOException e) { | ||
if (Log.isDebugEnabled()) { | ||
e.printStackTrace(); | ||
} | ||
} | ||
return fv.getClasses(); | ||
} | ||
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private static class FileVisitor extends SimpleFileVisitor<Path> { | ||
private final List<Class<?>> classes = new ArrayList<>(); | ||
private final boolean nestedClasses; | ||
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public FileVisitor(boolean nestedClasses) { | ||
super(); | ||
this.nestedClasses = nestedClasses; | ||
} | ||
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@Override | ||
public FileVisitResult visitFile(Path file, BasicFileAttributes attr) { | ||
try { | ||
String name = file.toString().substring(18); | ||
if (name.endsWith(".class") && (nestedClasses || !name.contains("$"))) { | ||
classes.add(Class.forName(name.substring(0, name.length() - 6).replaceAll("/", "."))); | ||
} | ||
} catch (ClassNotFoundException|NoClassDefFoundError e) { | ||
if (Log.isDebugEnabled()) { | ||
e.printStackTrace(); | ||
} | ||
} | ||
return CONTINUE; | ||
} | ||
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private List<Class<?>> getClasses() { | ||
return classes; | ||
} | ||
} | ||
} |
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