added javac and tests

javac-test.rb

@@ -0,0 +1,49 @@
+#!/bin/ruby
+require 'test/unit'
+require 'javac.rb'
+
+class 
+    Javac < Test::Unit::TestCase
+    def test_windows_javac_cmd_one_input
+        expected = "c:\\\\test.java"
+        actual = windows_javac_args("/cygdrive/c/test.java".split)
+        assert_equal(expected.split, actual)
+    end
+
+    def test_windows_javac_cmd_two_inputs
+        expected = "c:\\\\test.java c:\\\\test2.java"
+        actual = windows_javac_args("/cygdrive/c/test.java /cygdrive/c/test2.java".split)
+        assert_equal(expected.split, actual)
+    end
+
+    def test_windows_javac_cmd_options
+        expected = "-classpath c:\\\\classpath"
+        actual = windows_javac_args("-classpath /cygdrive/c/classpath".split)
+        assert_equal(expected.split, actual)
+    end
+
+    def test_windows_javac_cmd_slash
+        expected = "wrappers\\\\hello.java"
+        actual = windows_javac_args("./wrappers/hello.java")
+        assert_equal(expected.split, actual)
+    end
+
+    def test_find_javac
+        expected = "/cygdrive/c/Program Files/Java/jdk1.6.0_13/bin/javac.exe"
+        actual = javac_path()
+        assert_equal(expected, actual)
+    end
+
+    def test_javac_command
+        expected = '"/cygdrive/c/Program Files/Java/jdk1.6.0_13/bin/javac.exe" 1.java 2.java'
+        actual = windows_javac_command(["1.java", "2.java"])
+        assert_equal(expected, actual)
+    end
+
+    def test_to_winPathList
+        expected="c:\\home;c:\\java"
+        actual = to_winPathList("/cygdrive/c/home:/cygdrive/c/java")
+        assert_equal(expected, actual)
+    end
+
+end

javac.rb

@@ -0,0 +1,35 @@
+#!/bin/ruby
+require 'paths.rb'
+
+
+def windows_javac_args(unixARGV)
+    unixARGV.map do | arg |
+        if arg[0] != '-'[0] 
+          #need to escape slashes or javac swallows them
+          to_winPath(arg).sub(/\\/,"\\\\\\") 
+        else 
+          #options like '-d' aren't paths, so don't convert them
+          arg
+        end
+    end
+end
+
+def javac_path
+    javacName = "javac.exe"
+    javaPath = ENV["JAVA_HOME"]
+    IO.popen("find \"#{javaPath}\" -name #{javacName}").readlines[0].chomp
+end
+
+def windows_javac_command(unixARGV)
+    '"' << javac_path << '" ' << windows_javac_args(unixARGV).join(" ")
+end
+
+if __FILE__ == $0
+    ENV["CLASSPATH"] = to_winPathList(ENV["CLASSPATH"])
+
+    javac = IO.popen(windows_javac_command(ARGV))
+
+    #wait for javac to finish before exitting
+    #and echo the input
+    puts javac.readlines 
+end