experimental feature: UnixUtils.head_s -> string

History.txt → CHANGELOG

@@ -1,28 +1,34 @@
-== 0.0.9 / 2012-04-12
+unreleased
+
+* Enhancements
+
+  * If you call a method with _s at the end, you get a string back. For example: UnixUtils.head_s
+
+0.0.9 / 2012-04-12
 
 * Bug fixes
 
   * Correct implementation of :read_from
 
-== 0.0.8 / 2012-04-12
+0.0.8 / 2012-04-12
 
 * Bug fixes
 
   * Let perl handle its own input files (ARGF)... my implementation using IO.select was not working.
 
-== 0.0.7 / 2012-04-11
+0.0.7 / 2012-04-11
 
 * Bug fixes
 
   * Make sure UnixUtils.tmp_path doesn't create too-long filenames
 
-== 0.0.6 / 2012-04-11
+0.0.6 / 2012-04-11
 
 * Enhancements
 
   * iconv command silently discards invalid characters
 
-== 0.0.5 / 2012-03-21
+0.0.5 / 2012-03-21
 
 * Enhancements
 
@@ -32,13 +38,13 @@
 
   * Thanks to @leomao10, make sed work more reliably on large files by using its input-file argument rather than piping in data
 
-== 0.0.4 / 2012-03-19
+0.0.4 / 2012-03-19
 
 * Bug fixes
 
   * NoMethodError when trying to print $stderr - thanks @leomao10 !
 
-== 0.0.3 / 2012-03-19
+0.0.3 / 2012-03-19
 
 * Enhancements
 
@@ -49,12 +55,12 @@
 
   * Correctly use pipes (I hope) - imitate POSIX::Spawn::Child's use of IO.select
 
-== 0.0.2 / 2012-02-16
+0.0.2 / 2012-02-16
 
 * Bug fixes
 
   * Fix use of splat internally so that it actually runs in MRI 1.8.7 and JRuby
 
-== 0.0.1 / 2012-02-16 (yanked!)
+0.0.1 / 2012-02-16 (yanked!)
 
 * Birthday!

lib/unix_utils.rb

@@ -324,4 +324,18 @@ def self.spawn(argv, options = {}) # :nodoc:
   ensure
     [stdin, stdout, stderr, input, output, error].each { |io| io.close if io and not io.closed? }
   end
+
+  def self.method_missing(method_id, *args)
+    base_method_id = method_id.to_s.chomp('_s')
+    if respond_to?(base_method_id)
+      begin
+        outfile = send(*([base_method_id]+args))
+        ::File.read outfile
+      ensure
+        ::FileUtils.rm_f outfile
+      end
+    else
+      super
+    end
+  end
 end

test/test_unix_utils.rb

@@ -342,6 +342,10 @@
       File.read(outfile).must_equal @a2z[2..-1].join("\n")
       safe_delete outfile
     end
+    it 'has a related tail_s method' do
+      str = UnixUtils.tail_s(@infile, 3)
+      str.must_equal @a2z.last(3).join("\n")
+    end
   end
 
   describe :head do
@@ -360,6 +364,10 @@
       File.read(outfile).must_equal(@a2z.first(3).join("\n") + "\n")
       safe_delete outfile
     end
+    it 'has a related head_s method' do
+      str = UnixUtils.head_s(@infile, 3)
+      str.must_equal(@a2z.first(3).join("\n") + "\n")
+    end
   end
 
   describe :cut do