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On attempt to remove readonly file NIO throws AccessDeniedException. If this is the case, try to remove the file with older java.io API

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This commit is contained in:
Eugene Zhuravlev
2015-05-15 19:40:43 +02:00
parent 070957ca14
commit 12dbba539a
1 changed files with 21 additions and 1 deletions
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platform/util-rt/src/com/intellij/openapi/util/io/FileUtilRt.java
+21 -1
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@@ -77,8 +77,10 @@ public class FileUtilRt {
private static Method ourFilesDeleteIfExistsMethod;
private static Method ourFilesWalkMethod;
private static Method ourFileToPathMethod;
private static Method ourPathToFileMethod;
private static Object ourDeletionVisitor;
private static Class ourNoSuchFileExceptionClass;
private static Class ourAccessDeniedExceptionClass;
static {
boolean initSuccess = false;
@@ -87,8 +89,10 @@ public class FileUtilRt {
final Class<?> visitorClass = Class.forName("java.nio.file.FileVisitor");
final Class<?> filesClass = Class.forName("java.nio.file.Files");
ourNoSuchFileExceptionClass = Class.forName("java.nio.file.NoSuchFileException");
ourAccessDeniedExceptionClass = Class.forName("java.nio.file.AccessDeniedException");
ourFileToPathMethod = Class.forName("java.io.File").getMethod("toPath");
ourPathToFileMethod = pathClass.getMethod("toFile");
ourFilesWalkMethod = filesClass.getMethod("walkFileTree", pathClass, visitorClass);
ourFilesDeleteIfExistsMethod = filesClass.getMethod("deleteIfExists", pathClass);
final Class<?> fileVisitResultClass = Class.forName("java.nio.file.FileVisitResult");
@@ -121,9 +125,25 @@ public class FileUtilRt {
return Boolean.TRUE;
}
catch (InvocationTargetException e) {
if (!(e.getCause() instanceof IOException)) {
final Throwable cause = e.getCause();
if (!(cause instanceof IOException)) {
return Boolean.FALSE;
}
if (ourAccessDeniedExceptionClass.isInstance(cause)) {
// file is read-only: fallback to standard java.io API
try {
final File file = (File)ourPathToFileMethod.invoke(fileObject);
if (file == null) {
return Boolean.FALSE;
}
if (file.delete() || !file.exists()) {
return Boolean.TRUE;
}
}
catch (Throwable ignored) {
return Boolean.FALSE;
}
}
}
catch (IllegalAccessException e) {
return Boolean.FALSE;