[Truffle] Add File.truncate.

jruby · May 6, 2015 · cff40b3 · cff40b3 · bjfish · May 6, 2015
1 parent 884428c
commit cff40b3
Showing 2 changed files with 30 additions and 15 deletions.
diff --git a/spec/truffle/tags/core/file/truncate_tags.txt b/spec/truffle/tags/core/file/truncate_tags.txt
@@ -1,15 +1,2 @@
-fails:File.truncate truncates a file
-fails:File.truncate truncate a file size to 0
-fails:File.truncate truncate a file size to 5
-fails:File.truncate truncates to a larger file size than the original file
-fails:File.truncate truncates to the same size as the original file
 fails:File.truncate raises an Errno::EINVAL if the length argument is not valid
-fails:File.truncate accepts an object that has a #to_path method
-fails:File#truncate does not move the file write pointer to the specified byte offset
-fails:File#truncate does not move the file read pointer to the specified byte offset
-fails:File#truncate truncates a file
-fails:File#truncate truncates a file size to 0
-fails:File#truncate truncates a file size to 5
-fails:File#truncate truncates a file to a larger size than the original file
-fails:File#truncate truncates a file to the same size as the original file
 fails:File#truncate raises an IOError if file is closed
diff --git a/truffle/src/main/java/org/jruby/truffle/nodes/rubinius/IOPrimitiveNodes.java b/truffle/src/main/java/org/jruby/truffle/nodes/rubinius/IOPrimitiveNodes.java
@@ -116,13 +116,41 @@ public IOTruncatePrimitiveNode(RubyContext context, SourceSection sourceSection)
         }
 
         @Specialization
-        public int truncate(RubyString path, int offset) {
+        public int truncate(RubyString path, int length) {
+            return truncate(path, (long) length);
+        }
+
+        @Specialization
+        public int truncate(RubyString path, long length) {
             final String pathString = RubyEncoding.decodeUTF8(path.getByteList().getUnsafeBytes(), path.getByteList().getBegin(), path.getByteList().getRealSize());
-            return posix().truncate(pathString, offset);
+            return posix().truncate(pathString, length);
         }
 
     }
 
+    @RubiniusPrimitive(name = "io_ftruncate")
+    public static abstract class IOFTruncatePrimitiveNode extends RubiniusPrimitiveNode {
+
+        public IOFTruncatePrimitiveNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        @Specialization
+        public int ftruncate(VirtualFrame frame, RubyBasicObject io, int length) {
+            return ftruncate(frame, io, (long) length);
+        }
+
+        @Specialization
+        public int ftruncate(VirtualFrame frame, RubyBasicObject io, long length) {
+            final int fd = (int) rubyWithSelf(frame, io, "@descriptor");
+            return posix().ftruncate(fd, length);
+        }
+
+    }
+
+
+
+
     @RubiniusPrimitive(name = "io_fnmatch", needsSelf = false)
     public static abstract class IOFNMatchPrimitiveNode extends RubiniusPrimitiveNode {