A bit of File{.,#}{size,truncate}

lib-topaz/file.rb

@@ -9,6 +9,20 @@ def self.open(filename, mode="r", perm=nil, opt=nil, &block)
     end
   end
 
+  def self.truncate(filename, length)
+    File.open(filename) do |f|
+      f.truncate(length)
+    end
+  end
+
+  def self.size(filename)
+    return File.stat(filename).size
+  end
+
+  def size
+    return self.stat.size
+  end
+
   def zero?
     self.size == 0
   end

spec/tags/core/file/size_tags.txt

@@ -1,17 +1,8 @@
 fails:File.size? calls #to_io to convert the argument to an IO
 fails:File.size? accepts a File argument
-fails:File.size returns the size of the file if it exists and is not empty
-fails:File.size accepts a String-like (to_str) parameter
-fails:File.size accepts an object that has a #to_path method
 fails:File.size calls #to_io to convert the argument to an IO
-fails:File.size raises an error if file_name doesn't exist
-fails:File.size returns 0 if the file is empty
 fails:File.size accepts a File argument
-fails:File#size is an instance method
-fails:File#size returns the file's size as a Fixnum
-fails:File#size returns the file's size in bytes
 fails:File#size returns the cached size of the file if subsequently deleted
 fails:File#size returns the file's current size even if modified
 fails:File#size raises an IOError on a closed file
 fails:File#size follows symlinks if necessary
-fails:File#size for an empty file returns 0

spec/tags/core/file/truncate_tags.txt

@@ -3,15 +3,7 @@ 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::ENOENT if the file does not exist
-fails:File.truncate raises an ArgumentError if not passed two arguments
-fails:File.truncate raises an Errno::EINVAL if the length argument is not valid
-fails:File.truncate raises a TypeError if not passed a String type for the first argument
-fails:File.truncate raises a TypeError if not passed an Integer type for the second argument
 fails:File.truncate accepts an object that has a #to_path method
 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 not opened for writing