config loading is now done via bottle class method, save function also exists

CMakeLists.txt

@@ -51,7 +51,8 @@ endforeach(cogfile)
 
 add_library(bottles SHARED ${src}/bottles/bottles.cpp
         ${src}/bottles/active.cpp ${src}/bottles/commands.cpp
-        ${src}/bottles/activate.cpp ${src}/bottles/config/cli_handler.cpp)
+        ${src}/bottles/activate.cpp ${src}/bottles/config/cli_handler.cpp
+        ${src}/bottles/config/save_load.cpp)
 add_dependencies(bottles cog)
 
 add_library(launch SHARED ${src}/launch/launch.cpp ${src}/launch/commands.cpp

include/bottles.hpp

@@ -27,6 +27,8 @@ namespace cellar {
                 string path;
                 string canonical_path;
                 Bottle();
+                bool load_config();
+                bool save_config();
         };
 		extern map<string, Bottle> get_bottles();
 	}

src/bottles/bottles.cpp

@@ -50,25 +50,16 @@ DLL_PUBLIC map<string, Bottle> cellar::bottles::get_bottles() {
                 output.type = bottle_symlink;
             } else {
                 output.canonical_path = fullitem;
-			    string jsonpath = fullitem + "/cellar.json";
-			    if (boost::filesystem::exists(jsonpath)) {
-			    	try {
-			    		json config;
-			    		ifstream configstream(jsonpath);
-			    		stringstream sstr_config;
-			    		sstr_config << configstream.rdbuf();
-   			    		config = json::parse(sstr_config.str());
-                        
-                        output.config = config;
+		    	try {
+                    if (output.load_config()) {
                         output.type = bottle_labelled;
-			    	}
-			    	catch (const exception &exc) {
-                        output.type = bottle_error;
-			    	}
-			    }
-			    else {
-                    output.type = bottle_anonymous;
-			    }
+                    } else {
+                        output.type = bottle_anonymous;
+                    }
+    	    	}
+		    	catch (const exception &exc) {
+                    output.type = bottle_error;
+		    	}
             }
 		    result[item] = output;
         }

src/bottles/config/cli_handler.cpp

@@ -1,8 +1,6 @@
 #include <string>
 #include <vector>
 
-#include "json.hpp"
-
 #include "bottles.hpp"
 #include "internal/bottles.hpp"
 #include "output.hpp"

src/bottles/config/save_load.cpp

@@ -0,0 +1,49 @@
+#include <fstream>
+#include <sstream>
+#include <string>
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/path.hpp>
+#include "json.hpp"
+
+#include "bottles.hpp"
+
+using namespace std;
+using namespace cellar::bottles;
+
+namespace fs = boost::filesystem;
+
+using json = nlohmann::json;
+
+bool Bottle::load_config() {
+    string jsonpath = this->canonical_path + "/cellar.json";
+    if (fs::exists(jsonpath)) {
+        json config;
+        ifstream configstream(jsonpath);
+        stringstream sstr_config;
+        sstr_config << configstream.rdbuf();
+        config = json::parse(sstr_config.str());
+           
+        this->config = config;
+        return true;
+    }
+    else {
+        return false;
+    }
+}
+
+bool Bottle::save_config() {
+    string jsonpath = this->canonical_path + "/cellar.json";
+
+    // backup the old config in case something bad happens
+    if (fs::exists(jsonpath)) {
+        fs::copy_file(jsonpath, jsonpath + ".old");
+
+        // now make room for the new one
+        fs::remove(jsonpath);
+    }
+
+    ofstream configstream(jsonpath);
+    configstream << this->config.dump(4);
+    return true;
+}