| |
| package com.sun.tools.javac.file; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.StringTokenizer; |
| import java.util.jar.Attributes; |
| import java.util.jar.JarFile; |
| import java.util.jar.Manifest; |
| |
| import com.sun.tools.javac.util.Context; |
| |
| /** |
| * Get meta-info about files. Default direct (non-caching) implementation. |
| * @see CacheFSInfo |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class FSInfo { |
| |
| /** Get the FSInfo instance for this context. |
| * @param context the context |
| * @return the Paths instance for this context |
| */ |
| public static FSInfo instance(Context context) { |
| FSInfo instance = context.get(FSInfo.class); |
| if (instance == null) |
| instance = new FSInfo(); |
| return instance; |
| } |
| |
| protected FSInfo() { |
| } |
| |
| protected FSInfo(Context context) { |
| context.put(FSInfo.class, this); |
| } |
| |
| public File getCanonicalFile(File file) { |
| try { |
| return file.getCanonicalFile(); |
| } catch (IOException e) { |
| return file.getAbsoluteFile(); |
| } |
| } |
| |
| public boolean exists(File file) { |
| return file.exists(); |
| } |
| |
| public boolean isDirectory(File file) { |
| return file.isDirectory(); |
| } |
| |
| public boolean isFile(File file) { |
| return file.isFile(); |
| } |
| |
| public List<File> getJarClassPath(File file) throws IOException { |
| String parent = file.getParent(); |
| try (JarFile jarFile = new JarFile(file)) { |
| Manifest man = jarFile.getManifest(); |
| if (man == null) |
| return Collections.emptyList(); |
| |
| Attributes attr = man.getMainAttributes(); |
| if (attr == null) |
| return Collections.emptyList(); |
| |
| String path = attr.getValue(Attributes.Name.CLASS_PATH); |
| if (path == null) |
| return Collections.emptyList(); |
| |
| List<File> list = new ArrayList<>(); |
| |
| for (StringTokenizer st = new StringTokenizer(path); |
| st.hasMoreTokens(); ) { |
| String elt = st.nextToken(); |
| File f = (parent == null ? new File(elt) : new File(parent, elt)); |
| list.add(f); |
| } |
| |
| return list; |
| } |
| } |
| } |