build: Add script to check for duplicated mime-types

Replaces the shell in Makefile.am

2 files changed, 18 insertions, 7 deletions

diff --git a/Makefile.am b/Makefile.am
index 1eaf72e1..8c1bd0f7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -38,7 +38,8 @@ EXTRA_DIST = \
 	shared-mime-info.pc.in		\
 	data/freedesktop_generate.sh	\
 	po/check_translations.sh	\
-	tests/test_generic_icons.sh
+	tests/test_generic_icons.sh	\
+	tests/test_duplicate_mime_types.sh
 
 CLEANFILES = freedesktop.org.xml po/stamp-it
 
@@ -128,12 +129,7 @@ else
 			rm -rf "$(top_builddir)/temp-mime-dir/" ; \
 		fi; \
 	fi
-	@if test x`grep '<mime-type' $(srcdir)/data/freedesktop.org.xml.in | tr -d '[:blank:]' | sort | uniq -d` != "x"; then \
-		echo "*************************************************************" ; \
-		echo "*** Some mime-types are duplicated, fix before committing ***" ; \
-		echo "*************************************************************" ; \
-		exit 1 ; \
-	fi
+	@$(srcdir)/tests/test_duplicate_mime_types.sh $(srcdir)/data/freedesktop.org.xml.in
 	@$(srcdir)/tests/test_generic_icons.sh $(srcdir)/data/freedesktop.org.xml.in
 endif
 
diff --git a/tests/test_duplicate_mime_types.sh b/tests/test_duplicate_mime_types.sh
new file mode 100755
index 00000000..401b383d
--- /dev/null
+++ b/tests/test_duplicate_mime_types.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+xml_db_file="${1}"
+
+duplicated=$(
+    grep '<mime-type' ${xml_db_file} | tr -d '[:blank:]' | sort | uniq -d
+)
+
+if [[ -n "${duplicated}" ]]; then
+    echo "*************************************************************"
+    echo "** Some mime-types are duplicated, fix before committing:  **"
+    echo "${duplicated}"
+    echo "*************************************************************"
+    exit 1
+fi