From 9fd67ce5251cc6a16e11d01f9e4031111d73e3b0 Mon Sep 17 00:00:00 2001
From: Vivien Kraus <vivien@planete-kraus.eu>
Date: Sat, 5 Dec 2020 15:29:49 +0100
Subject: Check that the code is indented on distcheck.

---
 Makefile.am     | 20 +++++++++++++++++++-
 configure.ac    |  5 +++++
 src/Makefile.am |  2 ++
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 6e77a42..d16d029 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,12 +3,14 @@ noinst_LTLIBRARIES =
 noinst_PROGRAMS =
 EXTRA_DIST =
 BUILT_SOURCES =
-DISTCHECK_CONFIGURE_FLAGS = CONFIG_SHELL=$(CONFIG_SHELL) SHELL=$(SHELL)
+DISTCHECK_CONFIGURE_FLAGS = CONFIG_SHELL=$(CONFIG_SHELL) SHELL=$(SHELL) \
+  --enable-indent-check=yes
 SUFFIXES =
 SUBDIRS = . po man
 ACLOCAL_AMFLAGS = -I m4
 AM_CPPFLAGS = -DLOCALEDIR=\"$(localedir)\" -I. -I$(srcdir)
 AM_CFLAGS = $(GUILE_CFLAGS) $(NETTLE_CFLAGS)
+INDENTED =
 
 include src/Makefile.am
 include doc/Makefile.am
@@ -20,3 +22,19 @@ $(top_srcdir)/.version:
 	@mv $@-t $@
 dist-hook:
 	echo $(VERSION) > $(distdir)/.tarball-version
+
+.PHONY: check-indented
+
+check-indented: $(INDENTED)
+	for source in $(INDENTED) ; do \
+	  echo "Checking that $$source is indented..." ; \
+	  (mkdir -p $$(dirname $$source-indented) \
+	   && $(INDENT) $(srcdir)/$$source -o $$source-indented \
+	   && cmp $(srcdir)/$$source $$source-indented \
+	   && rm -f $$source-indented) \
+	  || exit 1 ; \
+	done
+
+if INDENT_CHECK_ENABLED
+check-local: check-indented
+endif
diff --git a/configure.ac b/configure.ac
index 44d902b..9b3b3b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,9 +3,14 @@ AC_CONFIG_SRCDIR([src/libwebidoidc.c])
 AM_INIT_AUTOMAKE([subdir-objects])
 AM_SILENT_RULES([yes])
 
+AC_ARG_ENABLE([--enable-indent-check],
+  [When running tests, also check that the source code is indented])
+
+AM_CONDITIONAL([INDENT_CHECK_ENABLED], [test "x$enable_indent_check" = "xyes"])
 AC_PROG_CC
 AM_MISSING_PROG([SNARF], [guile-snarf])
 AM_MISSING_PROG([HELP2MAN], [help2man])
+AM_MISSING_PROG([INDENT], [indent])
 LT_INIT
 AC_CONFIG_HEADERS([config.h])
 AM_GNU_GETTEXT([external])
diff --git a/src/Makefile.am b/src/Makefile.am
index 832391d..95a66ff 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,6 +5,8 @@ AM_CPPFLAGS += -I %reldir% -I $(srcdir)/%reldir%
 %canon_reldir%_libwebidoidc_la_SOURCES = %reldir%/gettext.h %reldir%/libwebidoidc.c
 %canon_reldir%_libwebidoidc_la_LIBADD = $(noinst_LTLIBRARIES) $(GUILE_LIBS) $(NETTLE_LIBS)
 
+INDENTED += $(%canon_reldir%_libwebidoidc_la_SOURCES)
+
 SUFFIXES += .c .x
 .c.x:
 	$(AM_V_GEN) $(SNARF) -o $@ $< $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $(AM_CPPFLAGS) $(AM_CFLAGS) $(GUILE_CFLAGS) $(NETTLE_CFLAGS)
-- 
cgit v1.2.3