Add assuan_check_version and ASSUAN_VERSION_NUMBER.

* src/assuan.c (assuan_check_version): New.
(digitp, parse_version_number, parse_version_string)
(compare_versions): New.  Taken from libksba.
* configure.ac (VERSION_NUMBER): New ac_subst.
* src/Makefile.am (assuan.h): Pass VERSION and VERSION_NUMBER to
mkheader.
* src/assuan.h.in (ASSUAN_VERSION, ASSUAN_VERSION_NUMBER): New macros.
(assuan_check_version): New prototype.
* src/libassuan.def, src/libassuan.vers: Add assuan_check_version.
* src/mkheader.c (write_special, main): Support version and
version_number.
* tests/version.c: New.
* tests/Makefile.am (TESTS): Add version.
--

All our other libs have a version number check, thus we should have
one in Libassuan as well.

2 files changed, 95 insertions, 5 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index d82e18b..024ffe2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -18,17 +18,17 @@
 
 ## Process this file with automake to produce Makefile.in
 
-TESTS_ENVIRONMENT = 
+TESTS_ENVIRONMENT =
 
 EXTRA_DIST = motd ce-createpipe.c
 
-BUILT_SOURCES = 
-CLEANFILES = 
+BUILT_SOURCES =
+CLEANFILES =
 
-TESTS = pipeconnect
+TESTS = version pipeconnect
 
 if HAVE_W32CE_SYSTEM
-w32cetools = ce-createpipe ce-server 
+w32cetools = ce-createpipe ce-server
 endif
 
 if USE_DESCRIPTOR_PASSING
diff --git a/tests/version.c b/tests/version.c
new file mode 100644
index 0000000..96e43c0
--- /dev/null
+++ b/tests/version.c
@@ -0,0 +1,90 @@
+/* version.c - Check the version info fucntions
+   Copyright (C) 2013 g10 Code GmbH
+
+   This file is part of Assuan.
+
+   Assuan is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   Assuan 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "../src/assuan.h"
+#include "common.h"
+
+
+/*
+
+     M A I N
+
+*/
+int
+main (int argc, char **argv)
+{
+  int last_argc = -1;
+
+  if (argc)
+    {
+      log_set_prefix (*argv);
+      argc--; argv++;
+    }
+  while (argc && last_argc != argc )
+    {
+      last_argc = argc;
+      if (!strcmp (*argv, "--help"))
+        {
+          puts (
+"usage: ./version [options]\n"
+"\n"
+"Options:\n"
+"  --verbose      Show what is going on\n"
+);
+          exit (0);
+        }
+      if (!strcmp (*argv, "--verbose"))
+        {
+          verbose = 1;
+          argc--; argv++;
+        }
+      else if (!strcmp (*argv, "--debug"))
+        {
+          verbose = debug = 1;
+          argc--; argv++;
+        }
+    }
+
+  assuan_set_assuan_log_prefix (log_prefix);
+
+  if (!assuan_check_version (ASSUAN_VERSION))
+    log_error ("assuan_check_version returned an error\n");
+  if (!assuan_check_version ("2.0.99"))
+    log_error ("assuan_check_version returned an error for an old version\n");
+  if (assuan_check_version ("15"))
+    log_error ("assuan_check_version did not returned an error"
+               " for a newer version\n");
+  if (verbose || errorcount)
+    {
+      log_info ("Version from header: %s (0x%06x)\n",
+                ASSUAN_VERSION, ASSUAN_VERSION_NUMBER);
+      log_info ("Version from binary: %s \n", assuan_check_version (NULL));
+    }
+
+  return errorcount ? 1 : 0;
+}