subversion/libsvn_ra/util.c

   1 /*
   2  * util.c:  Repository access utility routines.
   3  *
   4  * ====================================================================
   5  * Copyright (c) 2007 CollabNet.  All rights reserved.
   6  *
   7  * This software is licensed as described in the file COPYING, which
   8  * you should have received as part of this distribution.  The terms
   9  * are also available at http://subversion.tigris.org/license-1.html.
  10  * If newer versions of this license are posted there, you may use a
  11  * newer version instead, at your option.
  12  *
  13  * This software consists of voluntary contributions made by many
  14  * individuals.  For exact contribution history, see the revision
  15  * history and logs, available at http://subversion.tigris.org/.
  16  * ====================================================================
  17  */
  18
  19 /* ==================================================================== */
  20 \f
  21 /*** Includes. ***/
  22 #include <apr_pools.h>
  23
  24 #include "svn_types.h"
  25 #include "svn_error.h"
  26 #include "svn_error_codes.h"
  27 #include "svn_path.h"
  28 #include "svn_ra.h"
  29
  30 #include "svn_private_config.h"
  31 #include "private/svn_ra_private.h"
  32
  33 /* Return an error with code SVN_ERR_UNSUPPORTED_FEATURE, and an error
  34    message referencing PATH_OR_URL, if the "server" pointed to be
  35    RA_SESSION doesn't support Merge Tracking (e.g. is pre-1.5).
  36    Perform temporary allocations in POOL. */
  37 svn_error_t *
  38 svn_ra__assert_mergeinfo_capable_server(svn_ra_session_t *ra_session,
  39                                         const char *path_or_url,
  40                                         apr_pool_t *pool)
  41 {
  42   svn_boolean_t mergeinfo_capable;
  43   SVN_ERR(svn_ra_has_capability(ra_session, &mergeinfo_capable,
  44                                 SVN_RA_CAPABILITY_MERGEINFO, pool));
  45   if (! mergeinfo_capable)
  46     {
  47       if (path_or_url == NULL)
  48         {
  49           svn_error_t *err = svn_ra_get_session_url(ra_session, &path_or_url,
  50                                                     pool);
  51           if (err)
  52             {
  53               /* The SVN_ERR_UNSUPPORTED_FEATURE error is more important,
  54                  so dummy up the session's URL and chuck this error. */
  55               svn_error_clear(err);
  56               path_or_url = "<repository>";
  57             }
  58         }
  59       return svn_error_createf(SVN_ERR_UNSUPPORTED_FEATURE, NULL,
  60                                _("Retrieval of mergeinfo unsupported by '%s'"),
  61                                svn_path_local_style(path_or_url, pool));
  62     }
  63   return SVN_NO_ERROR;
  64 }