[Positioning] Add OutputMedium & OutputTerminal

OutputMedium is the super-class of all output media.
OutputTerminal prints a Result on the terminal (or on any stream).

owlps-positioning/Makefile

@@ -55,13 +55,17 @@ OBJ_LIST = \
 	realposition.o \
 	configuration.o \
 	userinterface.o \
+	outputterminal.o \
 	input.o \
 	inputcsv.o \
 	inputlogcsv.o
 OBJ_NOTEST_LIST = \
 	posexcept.o \
 	inputmedium.o
-INTERFACES_LIST = inputlogmedium.hh positioningalgorithm.hh
+INTERFACES_LIST = \
+	inputlogmedium.hh \
+	outputmedium.hh \
+	positioningalgorithm.hh
 
 OBJ = $(OBJ_LIST:%=$(OBJ_DIR)/%)
 OBJ_NOTEST = $(OBJ_NOTEST_LIST:%=$(OBJ_DIR)/%)

owlps-positioning/src/outputmedium.hh

@@ -0,0 +1,24 @@
+#ifndef _OWLPS_POSITIONING_OUTPUTMEDIUM_HH_
+#define _OWLPS_POSITIONING_OUTPUTMEDIUM_HH_
+
+#include "result.hh"
+
+/// Super class of all output media
+/**
+ * Provide interface for output media, i.e. to write Results computed
+ * by a PositioningAlgorithm.
+ */
+class OutputMedium
+{
+public:
+  OutputMedium(void) {}
+
+  virtual ~OutputMedium(void) {}
+
+  /** @name Operations */
+  //@{
+  virtual void write(const Result &result) = 0 ;
+  //@} // End Operations
+} ;
+
+#endif // _OWLPS_POSITIONING_OUTPUTMEDIUM_HH_

owlps-positioning/src/outputterminal.cc

@@ -0,0 +1,8 @@
+#include "outputterminal.hh"
+
+
+
+void OutputTerminal::write(const Result &result)
+{
+  output_stream << result << '\n' ;
+}

owlps-positioning/src/outputterminal.hh

@@ -0,0 +1,21 @@
+#ifndef _OWLPS_POSITIONING_OUTPUTTERMINAL_HH_
+#define _OWLPS_POSITIONING_OUTPUTTERMINAL_HH_
+
+#include "outputmedium.hh"
+
+#include <iostream>
+
+/// Writes a result to a stream (defaults to the standard output)
+class OutputTerminal: public OutputMedium
+{
+protected:
+  std::ostream &output_stream ;
+
+public:
+  OutputTerminal(std::ostream &_output_stream = std::cout):
+    output_stream(_output_stream) {}
+
+  void write(const Result &result) ;
+} ;
+
+#endif // _OWLPS_POSITIONING_OUTPUTTERMINAL_HH_

owlps-positioning/tests/outputterminal_test.hh

@@ -0,0 +1,28 @@
+#include <cxxtest/TestSuite.h>
+
+#include "outputterminal.hh"
+#include "result.hh"
+
+#include <sstream>
+
+class OutputTerminal_test: public CxxTest::TestSuite
+{
+public:
+
+  void test_output(void)
+  {
+    std::ostringstream output_stream ;
+    OutputTerminal output(output_stream) ;
+    Result result ;
+
+    TS_ASSERT(output_stream.str().empty()) ;
+    output.write(result) ;
+
+    TS_ASSERT(! output_stream.str().empty()) ;
+
+    std::ostringstream result_stream ;
+    result_stream << result << '\n' ;
+    TS_ASSERT_EQUALS(output_stream.str(), result_stream.str()) ;
+  }
+
+} ;