[#1455] clang-format, uncrustify

1 files changed, 105 insertions, 0 deletions

diff --git a/tools/clang-format.sh b/tools/clang-format.sh
new file mode 100755
index 0000000000..f039d8c8b7
--- /dev/null
+++ b/tools/clang-format.sh
@@ -0,0 +1,105 @@
+#!/bin/sh
+
+# Copyright (C) 2020 Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Usage:
+#
+# ./tools/clang-format.sh [-d|--debug] [-h|--help] [$directory|$file ...]
+#
+# Run from the root of the repository to format all C++ files under specified
+# directories or specified files or current directory in case of no arguments.
+
+#------------------------------------------------------------------------------#
+
+set -eu
+
+# Customizations
+extensions_regex='(\.cpp|\.cc|\.C|\.cxx|\.m|\.hpp|\.hh|\.h|\.H|\.hxx|\.tpp)$'
+
+# Print usage.
+print_usage() {
+  printf \
+'Usage: %s {{options}}
+Options:
+  [-d|--debug]                 enable debug mode, showing every executed command
+  [-h|--help]                  print usage (this text)
+' \
+    "$(basename "${0}")"
+}
+
+# Parse parameters.
+while test ${#} -gt 0; do
+  case "${1}" in
+    # [-d|--debug]             enable debug mode, showing every executed command
+    '-d'|'--debug') set -vx ;;
+
+    # [-h|--help]              print usage (this text).
+    '-h'|'--help') print_usage ;;
+
+    # Allow extra arguments, they should be directories or files to be formatted.
+    *) break ;;
+  esac; shift
+done
+
+# Get script path.
+script_path=$(cd "$(dirname "${0}")" && pwd)
+
+# Use current directory when called without an argument.
+if test ${#} = 0; then
+  set -- .
+fi
+
+# Generated files will be filtered out.
+filtered_out=$("${script_path}/print-generated-files.sh")
+
+# For all arguments...
+parameters=
+while test ${#} -gt 0; do
+  # Preserve parameters that begin with dash and pass them to clang-format.
+  if test "$(printf '%s' "${1}" | cut -c 1)" = '-'; then
+    parameters="${parameters} ${1}"
+    shift
+    continue
+  fi
+
+  # The rest of the parameters are considered files or directories.
+  file=${1}
+
+  # Get absolute path.
+  if test "$(printf '%s' "${file}" | grep -Eo '^.')" != '/'; then
+    basename=$(basename "${file}")
+    if test "${basename}" = .; then
+      basename=
+    fi
+    file="$(cd "$(dirname "${file}")" && pwd)/${basename}"
+  fi
+  printf '%s\n' "${file}"
+
+  if test -f "${file}"; then
+    # Format file.
+    # shellcheck disable=SC2046
+    # We specifically want word splitting for the parameters.
+    clang-format --style=file -i $(printf '%s' "${parameters}") "${file}"
+  elif test -d "${file}"; then
+    # Get list of files to format.
+    cd "$(git rev-parse --show-toplevel)"
+    files=$(git ls-files | xargs -n1 printf "${PWD}/%s\\n" | grep -F "${file}" \
+      | grep -E "${extensions_regex}")
+
+    # Filter out generated files.
+    for file in ${filtered_out}; do
+      files=$(printf '%s\n' "${files}" | grep -Fv "${file}" | sed '/^$/d')
+    done
+
+    # For all files...
+    for i in ${files}; do
+      "${0}" "${i}"
+    done
+  fi
+
+  shift
+done