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1
11 package org.eclipse.jdt.internal.corext.refactoring.nls.changes;
12 import java.io.BufferedReader  ;
13 import java.io.IOException ;
14 import java.io.InputStream ;
15 import java.io.InputStreamReader ;
16
17 import org.eclipse.core.runtime.Assert;
18 import org.eclipse.core.runtime.CoreException;
19 import org.eclipse.core.runtime.IPath;
20 import org.eclipse.core.runtime.IProgressMonitor;
21
22 import org.eclipse.core.resources.IFile;
23 import org.eclipse.core.resources.ResourcesPlugin;
24
25 import org.eclipse.jdt.core.IJavaModelStatusConstants;
26 import org.eclipse.jdt.core.JavaModelException;
27
28 import org.eclipse.jdt.internal.corext.refactoring.base.JDTChange;
29 import org.eclipse.jdt.internal.corext.util.IOCloser;
30 import org.eclipse.ltk.core.refactoring.Change;
31 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
32
33 public class DeleteFileChange extends JDTChange {
34
35 private IPath fPath;
36 private String fSource;
37
38 public DeleteFileChange(IFile file){
39 Assert.isNotNull(file, "file"); fPath= file.getFullPath().removeFirstSegments(ResourcesPlugin.getWorkspace().getRoot().getFullPath().segmentCount());
41 }
42
43 public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException {
44 return isValid(pm, READ_ONLY | DIRTY);
45 }
46
47 public Change perform(IProgressMonitor pm) throws CoreException {
48 try {
49 pm.beginTask(NLSChangesMessages.deleteFile_deleting_resource, 1);
50 IFile file= ResourcesPlugin.getWorkspace().getRoot().getFile(fPath);
51 Assert.isNotNull(file);
52 Assert.isTrue(file.exists());
53 Assert.isTrue(!file.isReadOnly());
54 fSource= getSource(file);
55 CreateFileChange undo= createUndoChange(file, fPath, file.getModificationStamp(), fSource);
56 file.delete(true, true, pm);
57 return undo;
58 } finally {
59 pm.done();
60 }
61 }
62
63 private String getSource(IFile file) throws CoreException {
64 String encoding= null;
65 try {
66 encoding= file.getCharset();
67 } catch (CoreException ex) {
68 }
70
71 StringBuffer sb= new StringBuffer ();
72 BufferedReader br= null;
73 InputStream in= null;
74 try {
75 in= file.getContents();
76 if (encoding != null)
77 br= new BufferedReader (new InputStreamReader (in, encoding));
78 else
79 br= new BufferedReader (new InputStreamReader (in));
80 int read= 0;
81 while ((read= br.read()) != -1)
82 sb.append((char) read);
83 } catch (IOException e){
84 throw new JavaModelException(e, IJavaModelStatusConstants.IO_EXCEPTION);
85 } finally {
86 try{
87 IOCloser.rethrows(br, in);
88 } catch (IOException e){
89 throw new JavaModelException(e, IJavaModelStatusConstants.IO_EXCEPTION);
90 }
91 }
92 return sb.toString();
93 }
94
95 private static CreateFileChange createUndoChange(IFile file, IPath path, long stampToRestore, String source) {
96 String encoding;
97 try {
98 encoding= file.getCharset(false);
99 } catch (CoreException e) {
100 encoding= null;
101 }
102 return new CreateFileChange(path, source, encoding, stampToRestore);
103 }
104
105 public String getName() {
106 return NLSChangesMessages.deleteFile_Delete_File;
107 }
108
109 public Object getModifiedElement() {
110 return ResourcesPlugin.getWorkspace().getRoot().getFile(fPath);
111 }
112 }
113
114 |
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