chore: add clang-format

.clang-format

@@ -0,0 +1,35 @@
+Language: Cpp
+BasedOnStyle: Google
+IndentWidth: 8
+AlignAfterOpenBracket: Align
+AlignOperands: true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortIfStatementsOnASingleLine: false
+AlwaysBreakBeforeMultilineStrings: false
+AllowShortFunctionsOnASingleLine: None
+BinPackArguments: true
+BinPackParameters: true
+BreakBeforeBraces: Linux
+ColumnLimit: 80
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 72
+Cpp11BracedListStyle: false
+IndentCaseLabels: false
+IndentWrappedFunctionNames: false
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: All
+PointerAlignment: Right
+ReflowComments: true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements 
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 4
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+UseTab: Always
+

package.json

@@ -10,6 +10,8 @@
   "scripts": {
     "test": "make test",
     "commitlint": "commitlint",
+    "format": "git-clang-format --style=file",
+    "precommit": "git-clang-format --style=file",
     "commitmsg": "commitlint -e $GIT_PARAMS",
     "build-changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0",
     "update-changelog": "conventional-changelog -p angular -i CHANGELOG.md -s"
@@ -33,6 +35,7 @@
     "@commitlint/cli": "^6.1.3",
     "@commitlint/config-conventional": "^6.1.3",
     "@commitlint/travis-cli": "^6.1.3",
+    "clang-format": "^1.2.2",
     "commitlint": "^6.1.3",
     "husky": "^0.14.3",
     "travis-cli": "^1.0.9"