Add clang-format and apply it to all the files

.clang-format

@@ -0,0 +1,50 @@
+---
+# See https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+BasedOnStyle: LLVM
+IndentWidth: 4
+---
+Language: Cpp
+AccessModifierOffset: -4
+AlignAfterOpenBracket: AlwaysBreak
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowAllConstructorInitializersOnNextLine: false
+AllowShortIfStatementsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: TopLevel
+BinPackParameters: false
+BreakBeforeBraces: Allman
+ColumnLimit: 120
+DerivePointerAlignment: false
+FixNamespaceComments: false
+IndentCaseLabels: true
+IndentPPDirectives: AfterHash
+NamespaceIndentation: All
+PackConstructorInitializers: CurrentLine
+PointerAlignment: Left
+SortIncludes: Never
+SpaceAfterTemplateKeyword: false
+TabWidth: 4
+UseTab: Never
+---
+Language: ObjC
+AccessModifierOffset: -4
+AlignAfterOpenBracket: AlwaysBreak
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowAllConstructorInitializersOnNextLine: false
+AllowShortIfStatementsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: TopLevel
+BinPackParameters: false
+BreakBeforeBraces: Allman
+ColumnLimit: 120
+DerivePointerAlignment: false
+FixNamespaceComments: false
+IndentCaseLabels: true
+IndentPPDirectives: AfterHash
+NamespaceIndentation: All
+PackConstructorInitializers: CurrentLine
+PointerAlignment: Left
+SortIncludes: Never
+SpaceAfterTemplateKeyword: false
+TabWidth: 4
+UseTab: Never

cpp/include/Glacier2/Config.h

@@ -10,21 +10,21 @@
 //
 
 #if !defined(ICE_BUILDING_GLACIER2) && defined(GLACIER2_API_EXPORTS)
-#   define ICE_BUILDING_GLACIER2
+#    define ICE_BUILDING_GLACIER2
 #endif
 
 #if defined(_MSC_VER) && !defined(ICE_BUILDING_GLACIER2)
-#   pragma comment(lib, ICE_LIBNAME("Glacier2"))
+#    pragma comment(lib, ICE_LIBNAME("Glacier2"))
 #endif
 
 #ifndef GLACIER2_API
-#   if defined(ICE_STATIC_LIBS)
-#       define GLACIER2_API /**/
-#   elif defined(GLACIER2_API_EXPORTS)
-#       define GLACIER2_API ICE_DECLSPEC_EXPORT
-#   else
-#       define GLACIER2_API ICE_DECLSPEC_IMPORT
-#   endif
+#    if defined(ICE_STATIC_LIBS)
+#        define GLACIER2_API /**/
+#    elif defined(GLACIER2_API_EXPORTS)
+#        define GLACIER2_API ICE_DECLSPEC_EXPORT
+#    else
+#        define GLACIER2_API ICE_DECLSPEC_IMPORT
+#    endif
 #endif
 
 #endif

cpp/include/Glacier2/NullPermissionsVerifier.h

@@ -11,20 +11,20 @@
 #include <vector>
 
 #ifndef GLACIER2_API
-#   if defined(ICE_STATIC_LIBS)
-#       define GLACIER2_API /**/
-#   elif defined(GLACIER2_API_EXPORTS)
-#       define GLACIER2_API ICE_DECLSPEC_EXPORT
-#   else
-#       define GLACIER2_API ICE_DECLSPEC_IMPORT
-#   endif
+#    if defined(ICE_STATIC_LIBS)
+#        define GLACIER2_API /**/
+#    elif defined(GLACIER2_API_EXPORTS)
+#        define GLACIER2_API ICE_DECLSPEC_EXPORT
+#    else
+#        define GLACIER2_API ICE_DECLSPEC_IMPORT
+#    endif
 #endif
 
 namespace Glacier2Internal
 {
 
-GLACIER2_API void
-setupNullPermissionsVerifier(const Ice::CommunicatorPtr&, const std::string&, const std::vector<std::string>&);
+    GLACIER2_API void
+    setupNullPermissionsVerifier(const Ice::CommunicatorPtr&, const std::string&, const std::vector<std::string>&);
 
 }