[libgda/LIBGDA_5.2] postgresql: improve server version number calculation

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit a5355eb42addc49a4dd63a8cc7d0367a09a5e60b
Author: Daniel Espinosa Ortiz <esodan gmail com>
Date:   Mon Dec 17 16:00:36 2018 -0600

    postgresql: improve server version number calculation
    
    Fix issue: #24
    
    Once server version number is correctly calculated,
    MetaData can be obtained aswell.

 providers/reuseable/postgres/gda-postgres-reuseable.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)
---
diff --git a/providers/reuseable/postgres/gda-postgres-reuseable.c 
b/providers/reuseable/postgres/gda-postgres-reuseable.c
index 9144f8506..5980484d3 100644
--- a/providers/reuseable/postgres/gda-postgres-reuseable.c
+++ b/providers/reuseable/postgres/gda-postgres-reuseable.c
@@ -197,7 +197,7 @@ _gda_postgres_compute_version (GdaConnection *cnc, GdaPostgresReuseable *rdata,
        if (!cvalue) {
                g_set_error (error, GDA_SERVER_PROVIDER_ERROR,
                              GDA_SERVER_PROVIDER_INTERNAL_ERROR, "%s",
-                             _("Can't import data from web server"));
+                             _("Can't get version data from server"));
                g_object_unref (model);
                return FALSE;
        }
@@ -222,24 +222,19 @@ _gda_postgres_compute_version (GdaConnection *cnc, GdaPostgresReuseable *rdata,
                sscanf (ptr, "%d.%d.%d", &(prdata->major),  &(prdata->minor),  &(prdata->micro));
 
                /* elaborate the version number as a float */
-               gfloat div = 1;
-               while (*ptr != ' ') {
-                       if (*ptr != '.') {
-                               rdata->version_float += (*ptr - '0')/div;
-                               div *= 10;
-                       }
-                       ptr++;
-               }
+               rdata->version_float = ((gdouble) ((GdaProviderReuseable*)rdata)->major) +
+               ((gdouble) ((GdaProviderReuseable*)rdata)->minor) / 10.0 +
+               ((gdouble) ((GdaProviderReuseable*)rdata)->micro) / 100.0;
        }
 
        g_object_unref (model);
-       
-       /*
+
+/*
        g_print ("VERSIONS: [%f] [%d.%d.%d]\n", rdata->version_float,
                 ((GdaProviderReuseable*)rdata)->major,
                 ((GdaProviderReuseable*)rdata)->minor,
                 ((GdaProviderReuseable*)rdata)->micro);
-       */
+*/
        return TRUE;
 }