subversion/libsvn_delta/compat.c

   1 /*
   2  * compat.c :  Wrappers and callbacks for compatibility.
   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 #include <apr_pools.h>
  20
  21 #include "svn_types.h"
  22 #include "svn_error.h"
  23 #include "svn_delta.h"
  24
  25 \f
  26 struct file_rev_handler_wrapper_baton {
  27   void *baton;
  28   svn_file_rev_handler_old_t handler;
  29 };
  30
  31 /* This implements svn_repos_file_rev_handler2_t. */
  32 static svn_error_t *
  33 file_rev_handler_wrapper(void *baton,
  34                          const char *path,
  35                          svn_revnum_t rev,
  36                          apr_hash_t *rev_props,
  37                          svn_boolean_t result_of_merge,
  38                          svn_txdelta_window_handler_t *delta_handler,
  39                          void **delta_baton,
  40                          apr_array_header_t *prop_diffs,
  41                          apr_pool_t *pool)
  42 {
  43   struct file_rev_handler_wrapper_baton *fwb = baton;
  44
  45   if (fwb->handler)
  46     return fwb->handler(fwb->baton,
  47                         path,
  48                         rev,
  49                         rev_props,
  50                         delta_handler,
  51                         delta_baton,
  52                         prop_diffs,
  53                         pool);
  54
  55   return SVN_NO_ERROR;
  56 }
  57
  58 void
  59 svn_compat_wrap_file_rev_handler(svn_file_rev_handler_t *handler2,
  60                                  void **handler2_baton,
  61                                  svn_file_rev_handler_old_t handler,
  62                                  void *handler_baton,
  63                                  apr_pool_t *pool)
  64 {
  65   struct file_rev_handler_wrapper_baton *fwb = apr_palloc(pool, sizeof(*fwb));
  66
  67   /* Set the user provided old format callback in the baton. */
  68   fwb->baton = handler_baton;
  69   fwb->handler = handler;
  70
  71   *handler2_baton = fwb;
  72   *handler2 = file_rev_handler_wrapper;
  73 }