feat(config): add ability to set value for variable

example/config_example.dart

@@ -1,53 +1,42 @@
 import 'package:libgit2dart/libgit2dart.dart';
 
 void main() {
-  final repoConfig = Config(path: '.git/config');
+  // Open system + global config file.
+  final config = Config.open();
 
-  print('All entries of repo config:');
-  for (final entry in repoConfig.entries.entries) {
+  print('All entries of system/global config:');
+  // config.variables hold key/value from config file
+  for (final entry in config.variables.entries) {
     print('${entry.key}: ${entry.value}');
   }
+  // .close should be called on object to free memory when done.
+  config.close();
 
-  repoConfig.close();
-
+  // Open config file at provided path.
+  // Exception is thrown if file not found.
   try {
-    final systemConfig = Config.system();
+    final repoConfig = Config.open(path: '.git/config');
 
-    print(
-        '\nUser Name from system config: ${systemConfig.entries['user.name']}');
+    print('All entries of repo config:');
+    for (final entry in repoConfig.variables.entries) {
+      print('${entry.key}: ${entry.value}');
+    }
 
-    systemConfig.close();
+    repoConfig.close();
   } catch (e) {
-    print('\n$e');
+    print(e);
   }
 
+  // Open global config file if there's one.
+  // Exception is thrown if file not found.
   try {
     final globalConfig = Config.global();
 
-    print(
-        '\nUser Name from global config: ${globalConfig.entries['user.name']}');
+    final userName = globalConfig.variables['user.name'];
+    print('\nUser Name from global config: $userName');
 
     globalConfig.close();
   } catch (e) {
     print('\n$e');
   }
-
-  try {
-    final xdgConfig = Config.xdg();
-    print('\nAll entries of repo config:');
-
-    print('\nUser Name from xdg config: ${xdgConfig.entries['user.name']}');
-
-    xdgConfig.close();
-  } catch (e) {
-    print('\n$e');
-  }
-
-  final config = Config();
-
-  print('\nAll entries of system/global config:');
-  for (final entry in config.entries.entries) {
-    print('${entry.key}: ${entry.value}');
-  }
-  config.close();
 }

lib/src/bindings/config.dart

@@ -169,12 +169,6 @@ int getInt(Pointer<git_config> cfg, String variable) {
   return result;
 }
 
-/// Get the value of a config variable and parse it as a string.
-String getString(Pointer<git_config> cfg, String variable) {
-  final value = getConfigValue(cfg, variable);
-  return value.cast<Utf8>().toDartString();
-}
-
 /// Set the value of a boolean config variable in the config file with the
 /// highest level (usually the local one).
 ///
@@ -192,6 +186,8 @@ void setBool(Pointer<git_config> cfg, String name, bool value) {
 
 /// Set the value of an integer config variable in the config file with the
 /// highest level (usually the local one).
+///
+/// Throws a [LibGit2Error] if error occured.
 void setInt(Pointer<git_config> cfg, String name, int value) {
   final nameC = name.toNativeUtf8().cast<Int8>();
   final error = libgit2.git_config_set_int64(cfg, nameC, value);
@@ -204,6 +200,8 @@ void setInt(Pointer<git_config> cfg, String name, int value) {
 
 /// Set the value of a string config variable in the config file with the
 /// highest level (usually the local one).
+///
+/// Throws a [LibGit2Error] if error occured.
 void setString(Pointer<git_config> cfg, String name, String value) {
   final nameC = name.toNativeUtf8().cast<Int8>();
   final valueC = value.toNativeUtf8().cast<Int8>();

lib/src/config.dart

@@ -114,7 +114,7 @@ class Config {
   Map<String, dynamic> variables = {};
 
   /// Sets value of config key
-  void setEntry(String key, dynamic value) {
+  void setVariable(String key, dynamic value) {
     try {
       if (value.runtimeType == bool) {
         config.setBool(configPointer.value, key, value);

test/config_test.dart

@@ -5,62 +5,52 @@ import 'package:libgit2dart/src/util.dart';
 import 'package:libgit2dart/src/config.dart';
 
 void main() {
+  final tmpDir = Directory.systemTemp.path;
   const configFileName = 'test_config';
+  late Config config;
+
   group('Config', () {
     setUpAll(() {
       libgit2.git_libgit2_init();
     });
 
     setUp(() {
-      File('${Directory.current.path}/test/$configFileName').writeAsStringSync(
+      File('$tmpDir/$configFileName').writeAsStringSync(
           '[core]\n\trepositoryformatversion = 0\n\tbare = false\n[remote "origin"]\n\turl = someurl');
+      config = Config.open(path: '$tmpDir/$configFileName');
     });
 
     tearDown(() {
-      File('${Directory.current.path}/test/$configFileName').deleteSync();
+      config.close();
+      File('$tmpDir/$configFileName').deleteSync();
     });
 
     tearDownAll(() {
       libgit2.git_libgit2_shutdown();
     });
 
-    test('opens file successfully', () {
-      final config = Config();
-      expect(config, isA<Config>());
-      config.close();
-    });
-
     test('opens file successfully with provided path', () {
-      final config = Config(path: 'test/$configFileName');
       expect(config, isA<Config>());
-      config.close();
     });
 
     test('gets entries of file', () {
-      final config = Config(path: 'test/$configFileName');
-      expect(config.entries['core.repositoryformatversion'], equals('0'));
-      config.close();
+      expect(config.variables['core.repositoryformatversion'], equals('0'));
     });
 
     test('sets boolean value for provided key', () {
-      final config = Config(path: 'test/$configFileName');
-      config.setEntry('core.bare', true);
-      expect(config.entries['core.bare'], equals('true'));
-      config.close();
+      config.setVariable('core.bare', true);
+      expect(config.variables['core.bare'], equals('true'));
     });
 
     test('sets integer value for provided key', () {
-      final config = Config(path: 'test/$configFileName');
-      config.setEntry('core.repositoryformatversion', 1);
-      expect(config.entries['core.repositoryformatversion'], equals('1'));
-      config.close();
+      config.setVariable('core.repositoryformatversion', 1);
+      expect(config.variables['core.repositoryformatversion'], equals('1'));
     });
 
     test('sets string value for provided key', () {
-      final config = Config(path: 'test/$configFileName');
-      config.setEntry('remote.origin.url', 'updated');
-      expect(config.entries['remote.origin.url'], equals('updated'));
-      config.close();
+      config.setVariable('remote.origin.url', 'updated');
+      expect(config.variables['remote.origin.url'], equals('updated'));
     });
   });
+  ;
 }