include: add version_compare helper function

Compare two version numbers in the major.minor form.
Switch the few users of manual version switching over to the new function.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>

2 files changed, 64 insertions, 1 deletions

diff --git a/test/Makefile.am b/test/Makefile.am
index fe9bc1f2e..b7ee070a1 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,7 +1,7 @@
 if ENABLE_UNIT_TESTS
 if HAVE_LD_WRAP
 SUBDIRS= . xi2
-noinst_PROGRAMS = xkb input xtest list
+noinst_PROGRAMS = xkb input xtest list misc
 check_LTLIBRARIES = libxservertest.la
 
 TESTS=$(noinst_PROGRAMS)
@@ -18,6 +18,7 @@ xkb_LDADD=$(TEST_LDADD)
 input_LDADD=$(TEST_LDADD)
 xtest_LDADD=$(TEST_LDADD)
 list_LDADD=$(TEST_LDADD)
+misc_LDADD=$(TEST_LDADD)
 
 libxservertest_la_LIBADD = \
             $(XSERVER_LIBS) \
diff --git a/test/misc.c b/test/misc.c
new file mode 100644
index 000000000..3d3b1a1e3
--- /dev/null
+++ b/test/misc.c
@@ -0,0 +1,62 @@
+/**
+ * Copyright © 2011 Red Hat, Inc.
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice (including the next
+ *  paragraph) shall be included in all copies or substantial portions of the
+ *  Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ *  DEALINGS IN THE SOFTWARE.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdint.h>
+#include "misc.h"
+
+static void dix_version_compare(void)
+{
+    int rc;
+
+    rc = version_compare(0, 0, 1, 0);
+    assert(rc < 0);
+    rc = version_compare(1, 0, 0, 0);
+    assert(rc > 0);
+    rc = version_compare(0, 0, 0, 0);
+    assert(rc == 0);
+    rc = version_compare(1, 0, 1, 0);
+    assert(rc == 0);
+    rc = version_compare(1, 0, 0, 9);
+    assert(rc > 0);
+    rc = version_compare(0, 9, 1, 0);
+    assert(rc < 0);
+    rc = version_compare(1, 0, 1, 9);
+    assert(rc < 0);
+    rc = version_compare(1, 9, 1, 0);
+    assert(rc > 0);
+    rc = version_compare(2, 0, 1, 9);
+    assert(rc > 0);
+    rc = version_compare(1, 9, 2, 0);
+    assert(rc < 0);
+}
+
+int main(int argc, char** argv)
+{
+    dix_version_compare();
+
+    return 0;
+}