core: New API gpgrt_cmp_version

* src/gpg-error.h.in: New API gpgrt_cmp_version.
* src/visibility.c (gpgrt_cmp_version): New wrapper.
* src/version.c (parse_version_string): Revamped.
(do_cmp_version): New.
(_gpgrt_cmp_version): New.
(_gpg_error_check_version): Re-implemented using the new func.
* tests/t-version.c: Include t-common.h.
(t_gpgrt_cmp_version): New test.
(main): Run new test.  Change test for new version number to require a
2 level number.
--

We have implementations of very similar functions in all out libs.
Thus it makes sense to provide a generic version.  This version is
actually derived from the ftp-indexer.c we use for the gnupg
website (see the gnupg-doc repo).

Signed-off-by: Werner Koch <wk@gnupg.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gpg-error.vers b/src/gpg-error.vers
index 201b784..8c50a15 100644
--- a/src/gpg-error.vers
+++ b/src/gpg-error.vers
@@ -190,6 +190,7 @@ GPG_ERROR_1.0 {
     gpgrt_b64enc_write;
     gpgrt_b64enc_finish;
 
+    gpgrt_cmp_version;
 
   local:
     *;