Remove DirectoryException and LinkException from dart:io and use FileException instaed.

sdk/lib/io/file.dart

Index: sdk/lib/io/file.dart
diff --git a/sdk/lib/io/file.dart b/sdk/lib/io/file.dart
index b7bfea2ab0092347201321cd58f72e2634013bc7..174ca415d396471da819e941955b94e213f16905 100644
--- a/sdk/lib/io/file.dart
+++ b/sdk/lib/io/file.dart
@@ -55,7 +55,7 @@ abstract class File implements FileSystemEntity {
    * by [createSync]. Calling [createSync] on an existing file might fail
    * if there are restrictive permissions on the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void createSync();
 
@@ -96,7 +96,7 @@ abstract class File implements FileSystemEntity {
   /**
    * Synchronously get the length of the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int lengthSync();
 
@@ -120,7 +120,7 @@ abstract class File implements FileSystemEntity {
    * Get the last-modified time of the file. Throws an exception
    * if the file does not exist.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   DateTime lastModifiedSync();
 
@@ -151,7 +151,7 @@ abstract class File implements FileSystemEntity {
    *
    * See [open] for information on the [mode] argument.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   RandomAccessFile openSync({FileMode mode: FileMode.READ});
 
@@ -168,7 +168,7 @@ abstract class File implements FileSystemEntity {
   /**
    * Synchronously get the canonical full path corresponding to the file path.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    *
    * *FullPathSync is deprecated.  Use absolutePathSync or
    * resolveSymbolicLinksSync instead.  FullPathSync will be removed
@@ -221,7 +221,7 @@ abstract class File implements FileSystemEntity {
   /**
    * Synchronously read the entire file contents as a list of bytes.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   List<int> readAsBytesSync();
 
@@ -238,7 +238,7 @@ abstract class File implements FileSystemEntity {
    * Synchronously read the entire file contents as a string using the
    * given [Encoding].
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   String readAsStringSync({Encoding encoding: UTF8});
 
@@ -255,7 +255,7 @@ abstract class File implements FileSystemEntity {
    * Synchronously read the entire file contents as lines of text
    * using the given [Encoding].
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   List<String> readAsLinesSync({Encoding encoding: UTF8});
 
@@ -281,7 +281,7 @@ abstract class File implements FileSystemEntity {
    * the file if it already exists. In order to append the bytes to an existing
    * file, pass [FileMode.APPEND] as the optional mode parameter.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void writeAsBytesSync(List<int> bytes, {FileMode mode: FileMode.WRITE});
 
@@ -311,7 +311,7 @@ abstract class File implements FileSystemEntity {
    * to an existing file, pass [FileMode.APPEND] as the optional mode
    * parameter.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void writeAsStringSync(String contents,
                          {FileMode mode: FileMode.WRITE,
@@ -339,7 +339,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously closes the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void closeSync();
 
@@ -353,7 +353,7 @@ abstract class RandomAccessFile {
    * Synchronously reads a single byte from the file. If end-of-file
    * has been reached -1 is returned.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int readByteSync();
 
@@ -366,7 +366,7 @@ abstract class RandomAccessFile {
    * Synchronously reads a maximum of [bytes] bytes from a file and
    * returns the result in a list of bytes.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   List<int> readSync(int bytes);
 
@@ -388,7 +388,7 @@ abstract class RandomAccessFile {
    * read into [buffer], otherwise up to [buffer.length]. If [end] == [start]
    * nothing happends.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int readIntoSync(List<int> buffer, [int start, int end]);
 
@@ -403,7 +403,7 @@ abstract class RandomAccessFile {
    * Synchronously writes a single byte to the file. Returns the
    * number of bytes successfully written.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int writeByteSync(int value);
 
@@ -423,7 +423,7 @@ abstract class RandomAccessFile {
    * start from index 0. If [end] is omitted, it will write to the end of
    * [buffer].
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void writeFromSync(List<int> buffer, [int start, int end]);
 
@@ -439,7 +439,7 @@ abstract class RandomAccessFile {
    * Synchronously writes a single string to the file using the given
    * [Encoding].
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void writeStringSync(String string,
                        {Encoding encoding: UTF8});
@@ -453,7 +453,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously gets the current byte position in the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int positionSync();
 
@@ -467,7 +467,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously sets the byte position in the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void setPositionSync(int position);
 
@@ -481,7 +481,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously truncates (or extends) the file to [length] bytes.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void truncateSync(int length);
 
@@ -494,7 +494,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously gets the length of the file.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   int lengthSync();
 
@@ -508,7 +508,7 @@ abstract class RandomAccessFile {
   /**
    * Synchronously flushes the contents of the file to disk.
    *
-   * Throws a [FileException] if the operation fails.
+   * Throws a [FileSystemException] if the operation fails.
    */
   void flushSync();
 
@@ -524,17 +524,17 @@ abstract class RandomAccessFile {
 }
 
 
-class FileException implements IOException {
+class FileSystemException implements IOException {
   final String message;
   final String path;
   final OSError osError;
-  const FileException([String this.message = "",
-                       String this.path = "",
-                       OSError this.osError]);
+  const FileSystemException([String this.message = "",
+                             String this.path = "",
+                             OSError this.osError]);
 
   String toString() {
     StringBuffer sb = new StringBuffer();
-    sb.write("FileException");
+    sb.write("FileSystemException");
     if (!message.isEmpty) {
       sb.write(": $message");
       if (path != null) {