maint: import a tool to check source code indentation style

Signed-off-by: Yury V. Zaytsev <yury@shurup.com>

maint/utils/check-indent.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Midnight Commander - check source code indentation
+#
+# Copyright (C) 2015
+# The Free Software Foundation, Inc.
+#
+# Written by:
+#  Slava Zanko <slavazanko@gmail.com>, 2015
+#
+# This file is part of the Midnight Commander.
+#
+# The Midnight Commander is free software: you can redistribute it
+# and/or modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# The Midnight Commander is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set -e
+set -x
+
+findUnindentedFiles() {
+  local directory=$1
+  find "${directory}" -name '*.[ch]' -print0 | \
+    xargs -0 indent \
+      --gnu-style \
+      --format-first-column-comments \
+      --indent-level4 \
+      --brace-indent0 \
+      --line-length100 \
+      --no-tabs \
+      --blank-lines-after-procedures
+  return $(git ls-files --modified | wc -l)
+}
+
+( findUnindentedFiles "lib" && findUnindentedFiles "src" && findUnindentedFiles "tests" ) || {
+  echo "Sources not indented"
+  git ls-files --modified
+  exit 1
+}