Clang format scrips files I use

.clang-format

# See https://clangformat.com/
# http://clang-format.me/
# http://clang.llvm.org/docs/ClangFormatStyleOptions.html
---
Language:        Cpp

# The extra indent or outdent of access modifiers, e.g. public:
AccessModifierOffset: -4

# If true, horizontally aligns arguments after an open bracket.
AlignAfterOpenBracket: true
AlignEscapedNewlinesLeft: true

# If true, horizontally align operands of binary and ternary expressions.
AlignOperands: true
AlignTrailingComments: true

# If true, aligns consecutive assignments.
AlignConsecutiveAssignments: true
AlignConsecutiveDeclarations: false

AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: false
AllowShortCaseLabelsOnASingleLine: false
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false
AllowShortFunctionsOnASingleLine: All

AlwaysBreakAfterDefinitionReturnType: false
AlwaysBreakTemplateDeclarations: true
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakAfterReturnType: None

BreakBeforeBinaryOperators: All
BreakBeforeTernaryOperators: true
BreakConstructorInitializersBeforeComma: false
BreakBeforeBraces: Allman

# If false, a function call’s or function definition’s parameters will either all be on the same line or will have one line each.
BinPackParameters: false
BinPackArguments: false

# Pointer and reference alignment style.
PointerAlignment: Left

# If the constructor initializers don’t fit on a line, put each initializer on its own line.
ConstructorInitializerAllOnOneLineOrOnePerLine: true

DerivePointerAlignment: false
ExperimentalAutoDetectBinPacking: false
IndentCaseLabels: false
IndentWrappedFunctionNames: false
IndentFunctionDeclarationAfterType: false
MaxEmptyLinesToKeep: 1
KeepEmptyLinesAtTheStartOfBlocks: true

ObjCBlockIndentWidth: 4
ObjCSpaceAfterProperty: true
ObjCSpaceBeforeProtocolList: true

# https://stackoverflow.com/questions/26635370/in-clang-format-what-do-the-penalties-do
PenaltyBreakBeforeFirstCallParameter: 19
PenaltyBreakComment: 300
PenaltyBreakString: 1000
PenaltyBreakFirstLessLess: 120
PenaltyExcessCharacter: 1000000
PenaltyReturnTypeOnItsOwnLine: 60

Cpp11BracedListStyle: true

# Indent only in inner namespaces (nested in other namespaces).
NamespaceIndentation: Inner

# The number of spaces before trailing line comments (// - comments).
SpacesBeforeTrailingComments: 1

ColumnLimit:     120
Standard:        Cpp11
IndentWidth:     4
ConstructorInitializerIndentWidth: 4
TabWidth:        4
ContinuationIndentWidth: 4
UseTab:          Never

SpacesInParentheses: false
SpacesInSquareBrackets: false
SpacesInAngles:  false
SpaceInEmptyParentheses: false
SpacesInCStyleCastParentheses: false
SpaceAfterCStyleCast: false
SpacesInContainerLiterals: true
SpaceBeforeAssignmentOperators: true

CommentPragmas:  '^ IWYU pragma:'
ForEachMacros:   [ foreach, Q_FOREACH, BOOST_FOREACH ]
IncludeCategories:
  - Regex:           '^<.*\.h>'
    Priority:        1
  - Regex:           '^<.*'
    Priority:        2
  - Regex:           '.*'
    Priority:        3
SpaceBeforeParens: ControlStatements
DisableFormat:   false
...

clang-format.sh

#!/bin/bash

 # safe https://sipb.mit.edu/doc/safe-shell/
 set -euf -o pipefail

function usage()
{
    echo "Usage: $0 <directory>|--help"
}

# Try different clang-format commands...
if type "clang-format" > /dev/null 2>&1; then
	CLANG_FORMAT="clang-format"
elif type "clang-format-3.8" > /dev/null 2>&1; then
	CLANG_FORMAT="clang-format-3.8"
elif type "clang-format-3.7" > /dev/null 2>&1; then
	CLANG_FORMAT="clang-format-3.7"
else
    CLANG_FORMAT=""
fi

if [ -z "$CLANG_FORMAT" ]; then
	echo "No clang-format command can be found"
	exit 1
fi
echo "Using: $("$CLANG_FORMAT" --version)"

# no arguments
if [ $# -eq 0 ]; then
    usage
    exit 1
fi

dir="$1"
# display help
if [ "$dir" = "--help" ]; then
    usage
    exit 0
fi

# path does not exist
if ! [ -d "$dir" ]; then
    if [ -f "$dir" ]; then
        echo "Can not format a file, use: $CLANG_FORMAT -style=file -i $dir"
    else
        echo "Directory $1 does not exist"
    fi
    usage
    exit 1
fi

# format
read -r -p "Are you sure? [y/N] " response
response=${response,,}    # tolower
if [[ $response =~ ^(yes|y)$ ]]; then
    echo "Formating..."
    find "$dir" -regex ".*\.\(hpp\|cpp\|c\|h\)" -print0 | xargs -0 "$CLANG_FORMAT" -style=file -i
fi