Update

.gitignore

@@ -0,0 +1,2 @@
+build/
+*.o

.vscode/settings.json

@@ -4,6 +4,7 @@
         "compare": "cpp",
         "type_traits": "cpp",
         "iostream": "cpp",
-        "iosfwd": "cpp"
+        "iosfwd": "cpp",
+        "fstream": "cpp"
     }
 }

CMakeLists.txt

@@ -0,0 +1,66 @@
+cmake_minimum_required(VERSION 3.15)
+project(config LANGUAGES CXX)
+
+# Postavi standard za C++
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Dodaj glavnu biblioteku
+add_library(config STATIC
+    src/config.cpp
+)
+
+# Uključi zaglavlja
+target_include_directories(config
+    PUBLIC 
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/lib>
+        $<INSTALL_INTERFACE:include>
+)
+
+
+# # Generiši export fajl za lokalnu upotrebu
+# export(TARGETS config
+#     FILE ${CMAKE_CURRENT_BINARY_DIR}/configTargets.cmake
+#     NAMESPACE config::
+# )
+
+# Generiši configConfig.cmake
+# include(CMakePackageConfigHelpers)
+
+# configure_package_config_file(
+#     ${CMAKE_CURRENT_SOURCE_DIR}/cmake/configConfig.cmake.in
+#     ${CMAKE_CURRENT_BINARY_DIR}/configConfig.cmake
+#     INSTALL_DESTINATION lib/cmake/config
+# )
+
+# write_basic_package_version_file(
+#     ${CMAKE_CURRENT_BINARY_DIR}/configConfigVersion.cmake
+#     VERSION 1.0.0
+#     COMPATIBILITY SameMajorVersion
+# )
+
+# Instalacija za lokalnu upotrebu
+install(TARGETS config
+    EXPORT configTargets
+    ARCHIVE DESTINATION lib
+    LIBRARY DESTINATION lib
+    RUNTIME DESTINATION bin
+)
+
+install(EXPORT configTargets
+    FILE configTargets.cmake
+    NAMESPACE config::
+    DESTINATION lib/cmake/config
+)
+
+install(FILES
+    ${CMAKE_CURRENT_BINARY_DIR}/configConfig.cmake
+    ${CMAKE_CURRENT_BINARY_DIR}/configConfigVersion.cmake
+    DESTINATION lib/cmake/config
+)
+
+# Opcionalno dodaj testove
+# enable_testing()
+# add_subdirectory(test)
+
+add_subdirectory(test)

README.md

@@ -13,10 +13,11 @@ Easily load variable configuration parameters into your program using this libra
 - Predefined necessary keys and enabled validation
 - Strict configuration file format
 - Comments in configuration file supported
+- Update config file from program
 
 ## Installation
 
-Just download the latest release and unzip it into your project. You can turn it on with:
+Just download the latest release and use cmake build system
 
 ```c++
 #include "config/lib/config.hpp"

example/config.cfg

@@ -10,4 +10,3 @@ DinioServer1Port=5000;
 DinioServer2Port=4048;
 DinioGetIPURL=http://lab-it.ddns.net/getip/index.php; #ovo ide na više A recorda i više servera pod istim domenom
 # DinioGetIPURL2=http://ns-hl.ddns.net/getip/index.php;
-

lib/config.hpp

@@ -14,26 +14,27 @@ namespace marcelb {
 /**
  * Clears white fields from a string
 */
-void clearWhiteSpaces(string &a);
+static void clearWhiteSpaces(string &a);
 
 /**
  * Removes comments from a string
  * Returns false if the entire line is a comment, 
  * false if it is not
 */
-bool clearComments(string &a);
+static bool clearComments(string &a);
 
 /**
  * It parses the line of the configuration file, 
  * receives the string line and returns the key, 
  * value pair via reference
 */
-void parseConfigLine(const string a, string &b, string &c);
+static void parseConfigLine(const string a, string &b, string &c);
 
 /**
  * Configuration class - at the level of a single file
 */
 class config {
+    const string configFilePath;
     vector<string> necessary;
     map<string, string> element;
 
@@ -47,6 +48,11 @@ class config {
     */
     bool init(const string _configFilePath);
 
+    /**
+     * Update config file
+     */
+    void update_file(const string& key);
+
     public:
 
     /**
@@ -60,6 +66,11 @@ class config {
     */
     string operator[] (const string& key);
 
+    /**
+     * Update config entry
+     */
+    void update(const string& key, const string& value);
+
     /**
      * Method to print all configuration key value pairs
     */

src/config.cpp

@@ -1,8 +1,9 @@
 #include "../lib/config.hpp"
 
 
-marcelb::config::config(const string _configFilePath, const vector<string> _necessary) {
+marcelb::config::config(const string _configFilePath, const vector<string> _necessary):
-   necessary = _necessary;
+   configFilePath(_configFilePath), necessary(_necessary) {
+
    if(!init(_configFilePath)) {
       throw string("[ERROR] Init config file ");
    }
@@ -16,6 +17,10 @@ string marcelb::config::operator[](const string& key) {
    return element[key];
 }
 
+void marcelb::config::update(const string& key, const string& value) {
+   element[key] = value;
+   update_file(key);
+}
 
 bool marcelb::config::init(const string _configFilePath) {
 
@@ -63,6 +68,48 @@ bool marcelb::config::isHaveNecessary() {
 }
 
 
+void marcelb::config::update_file(const string& key) {
+   ifstream configFile(configFilePath);
+   if (!configFile.is_open()) {
+      throw invalid_argument("[ERROR] Cant open config file for update!");
+   }
+
+   vector<string> lines;
+   string line;
+   bool update = false;
+   while (getline(configFile, line)) {
+
+      size_t pos = line.find(key + "=");
+      if (pos != string::npos) {
+
+         size_t eqPos = line.find("=", pos);
+         size_t semicolonPos = line.find(";", eqPos);
+         if (eqPos != string::npos && semicolonPos != string::npos) {
+            line = key + "=" + element[key] + ";";
+            update = true;
+         }
+      }
+      lines.push_back(line);
+   }
+   if (!update) {
+      line = key + "=" + element[key] + ";";
+      lines.push_back(line);
+   }
+   configFile.close();
+
+   ofstream configFileOut(configFilePath);
+   if (!configFileOut.is_open()) {
+      throw invalid_argument("[ERROR] Cant update config file!");
+   }
+
+   for (const string& updatedLine : lines) {
+      configFileOut << updatedLine << endl;
+   }
+
+   configFileOut.close();
+}
+
+
 void marcelb::clearWhiteSpaces(string &a) {
    const char whitespaces[] = {' ', '\t'};
    for (int i=0; i<sizeof(whitespaces)/sizeof(const char); i++) {

test/CMakeLists.txt

@@ -0,0 +1,6 @@
+add_executable(config_test test.cpp)
+
+target_link_libraries(config_test PRIVATE config)
+
+# Dodaj direktorijum za zaglavlja
+# target_include_directories(config_test PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../lib)

test/compile.sh

@@ -1 +0,0 @@
-g++ test.cpp ../src/* -o test.o

test/test.cpp

@@ -9,5 +9,9 @@ int main() {
     config mycfg ("../example/config.cfg", {"Username", "API", "Domain" });
     cout << mycfg["consolePrintLogs"];
 
+    mycfg.update("Baba2", "Janja");
+    cout << mycfg["Baba"];
+
+
     return 0;
 }