Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/javac/file/FSInfo.java
src/share/classes/com/sun/tools/javac/file/FSInfo.java
- changeset 0
- 959103a6100f
- child 2525
- 2eb010b6cb22
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| -1:000000000000 | 0:959103a6100f |
|---|---|
| 1 | |
| 2 package com.sun.tools.javac.file; | |
| 3 | |
| 4 import java.io.File; | |
| 5 import java.io.IOException; | |
| 6 import java.util.ArrayList; | |
| 7 import java.util.Collections; | |
| 8 import java.util.List; | |
| 9 import java.util.StringTokenizer; | |
| 10 import java.util.jar.Attributes; | |
| 11 import java.util.jar.JarFile; | |
| 12 import java.util.jar.Manifest; | |
| 13 | |
| 14 import com.sun.tools.javac.util.Context; | |
| 15 | |
| 16 /** | |
| 17 * Get meta-info about files. Default direct (non-caching) implementation. | |
| 18 * @see CacheFSInfo | |
| 19 * | |
| 20 * <p><b>This is NOT part of any supported API. | |
| 21 * If you write code that depends on this, you do so at your own risk. | |
| 22 * This code and its internal interfaces are subject to change or | |
| 23 * deletion without notice.</b> | |
| 24 */ | |
| 25 public class FSInfo { | |
| 26 | |
| 27 /** Get the FSInfo instance for this context. | |
| 28 * @param context the context | |
| 29 * @return the Paths instance for this context | |
| 30 */ | |
| 31 public static FSInfo instance(Context context) { | |
| 32 FSInfo instance = context.get(FSInfo.class); | |
| 33 if (instance == null) | |
| 34 instance = new FSInfo(); | |
| 35 return instance; | |
| 36 } | |
| 37 | |
| 38 protected FSInfo() { | |
| 39 } | |
| 40 | |
| 41 protected FSInfo(Context context) { | |
| 42 context.put(FSInfo.class, this); | |
| 43 } | |
| 44 | |
| 45 public File getCanonicalFile(File file) { | |
| 46 try { | |
| 47 return file.getCanonicalFile(); | |
| 48 } catch (IOException e) { | |
| 49 return file.getAbsoluteFile(); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 public boolean exists(File file) { | |
| 54 return file.exists(); | |
| 55 } | |
| 56 | |
| 57 public boolean isDirectory(File file) { | |
| 58 return file.isDirectory(); | |
| 59 } | |
| 60 | |
| 61 public boolean isFile(File file) { | |
| 62 return file.isFile(); | |
| 63 } | |
| 64 | |
| 65 public List<File> getJarClassPath(File file) throws IOException { | |
| 66 String parent = file.getParent(); | |
| 67 JarFile jarFile = new JarFile(file); | |
| 68 try { | |
| 69 Manifest man = jarFile.getManifest(); | |
| 70 if (man == null) | |
| 71 return Collections.emptyList(); | |
| 72 | |
| 73 Attributes attr = man.getMainAttributes(); | |
| 74 if (attr == null) | |
| 75 return Collections.emptyList(); | |
| 76 | |
| 77 String path = attr.getValue(Attributes.Name.CLASS_PATH); | |
| 78 if (path == null) | |
| 79 return Collections.emptyList(); | |
| 80 | |
| 81 List<File> list = new ArrayList<File>(); | |
| 82 | |
| 83 for (StringTokenizer st = new StringTokenizer(path); st.hasMoreTokens(); ) { | |
| 84 String elt = st.nextToken(); | |
| 85 File f = (parent == null ? new File(elt) : new File(parent, elt)); | |
| 86 list.add(f); | |
| 87 } | |
| 88 | |
| 89 return list; | |
| 90 } finally { | |
| 91 jarFile.close(); | |
| 92 } | |
| 93 } | |
| 94 } |
