From 880e9a52c34943ba4ee22a3d6c2162d314af4e66 Mon Sep 17 00:00:00 2001
From: Joseph Lenox <lenox.joseph@gmail.com>
Date: Sun, 2 Sep 2018 11:49:49 -0500
Subject: [PATCH] Prime layer_z and layer_num for end gcode in C++ PrintGcode.

---
 src/test/libslic3r/test_printgcode.cpp | 17 +++++++++++++++++
 xs/src/libslic3r/PrintGCode.cpp        |  2 ++
 2 files changed, 19 insertions(+)

diff --git a/src/test/libslic3r/test_printgcode.cpp b/src/test/libslic3r/test_printgcode.cpp
index 34c529ed6..67577875b 100644
--- a/src/test/libslic3r/test_printgcode.cpp
+++ b/src/test/libslic3r/test_printgcode.cpp
@@ -208,6 +208,23 @@ SCENARIO( "PrintGCode basic functionality") {
             }
         }
 
+
+        WHEN("end_gcode exists with layer_num and layer_z") {
+            config->set("end_gcode", "; Layer_num [layer_num]\n; Layer_z [layer_z]");
+            config->set("layer_height", 0.1);
+            config->set("first_layer_height", 0.1);
+
+            Slic3r::Model model;
+            auto print {Slic3r::Test::init_print({TestMesh::cube_20x20x20}, model, config)};
+            Slic3r::Test::gcode(gcode, print);
+
+            auto exported {gcode.str()};
+            THEN("layer_num and layer_z are processed in the end gcode") {\
+                REQUIRE(exported.find("; Layer_num 199") != std::string::npos);
+                REQUIRE(exported.find("; Layer_z 20") != std::string::npos);
+            }
+        }
+
         gcode.clear();
     }
 }
diff --git a/xs/src/libslic3r/PrintGCode.cpp b/xs/src/libslic3r/PrintGCode.cpp
index 179943679..0af21863c 100644
--- a/xs/src/libslic3r/PrintGCode.cpp
+++ b/xs/src/libslic3r/PrintGCode.cpp
@@ -269,6 +269,8 @@ PrintGCode::output()
                     this->process_layer(idx, layer, layer->object()->_shifted_copies);
                 }
             }
+            gcodegen.placeholder_parser->set("layer_z", unscale(print_z));
+            gcodegen.placeholder_parser->set("layer_num", gcodegen.layer_index);
         }
         
         this->flush_filters();