1 /*
2  * compat.c :  Wrappers and callbacks for compatibility.
3  *
4  * ====================================================================
5  *    Licensed to the Apache Software Foundation (ASF) under one
6  *    or more contributor license agreements.  See the NOTICE file
7  *    distributed with this work for additional information
8  *    regarding copyright ownership.  The ASF licenses this file
9  *    to you under the Apache License, Version 2.0 (the
10  *    "License"); you may not use this file except in compliance
11  *    with the License.  You may obtain a copy of the License at
12  *
13  *      http://www.apache.org/licenses/LICENSE-2.0
14  *
15  *    Unless required by applicable law or agreed to in writing,
16  *    software distributed under the License is distributed on an
17  *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18  *    KIND, either express or implied.  See the License for the
19  *    specific language governing permissions and limitations
20  *    under the License.
21  * ====================================================================
22  */
23 
24 #include <apr_pools.h>
25 #include <apr_strings.h>
26 
27 #include "svn_hash.h"
28 #include "svn_types.h"
29 #include "svn_error.h"
30 #include "svn_compat.h"
31 #include "svn_props.h"
32 
33 
34 /* Baton for use with svn_compat_wrap_commit_callback */
35 struct commit_wrapper_baton {
36   void *baton;
37   svn_commit_callback_t callback;
38 };
39 
40 /* This implements svn_commit_callback2_t. */
41 static svn_error_t *
commit_wrapper_callback(const svn_commit_info_t * commit_info,void * baton,apr_pool_t * pool)42 commit_wrapper_callback(const svn_commit_info_t *commit_info,
43                         void *baton, apr_pool_t *pool)
44 {
45   struct commit_wrapper_baton *cwb = baton;
46 
47   if (cwb->callback)
48     return cwb->callback(commit_info->revision,
49                          commit_info->date,
50                          commit_info->author,
51                          cwb->baton);
52 
53   return SVN_NO_ERROR;
54 }
55 
56 void
svn_compat_wrap_commit_callback(svn_commit_callback2_t * callback2,void ** callback2_baton,svn_commit_callback_t callback,void * callback_baton,apr_pool_t * pool)57 svn_compat_wrap_commit_callback(svn_commit_callback2_t *callback2,
58                                 void **callback2_baton,
59                                 svn_commit_callback_t callback,
60                                 void *callback_baton,
61                                 apr_pool_t *pool)
62 {
63   struct commit_wrapper_baton *cwb = apr_palloc(pool, sizeof(*cwb));
64 
65   /* Set the user provided old format callback in the baton */
66   cwb->baton = callback_baton;
67   cwb->callback = callback;
68 
69   *callback2_baton = cwb;
70   *callback2 = commit_wrapper_callback;
71 }
72 
73 
74 void
svn_compat_log_revprops_clear(apr_hash_t * revprops)75 svn_compat_log_revprops_clear(apr_hash_t *revprops)
76 {
77   if (revprops)
78     {
79       svn_hash_sets(revprops, SVN_PROP_REVISION_AUTHOR, NULL);
80       svn_hash_sets(revprops, SVN_PROP_REVISION_DATE, NULL);
81       svn_hash_sets(revprops, SVN_PROP_REVISION_LOG, NULL);
82     }
83 }
84 
85 apr_array_header_t *
svn_compat_log_revprops_in(apr_pool_t * pool)86 svn_compat_log_revprops_in(apr_pool_t *pool)
87 {
88   apr_array_header_t *revprops = apr_array_make(pool, 3, sizeof(char *));
89 
90   APR_ARRAY_PUSH(revprops, const char *) = SVN_PROP_REVISION_AUTHOR;
91   APR_ARRAY_PUSH(revprops, const char *) = SVN_PROP_REVISION_DATE;
92   APR_ARRAY_PUSH(revprops, const char *) = SVN_PROP_REVISION_LOG;
93 
94   return revprops;
95 }
96 
97 void
svn_compat_log_revprops_out_string(const svn_string_t ** author,const svn_string_t ** date,const svn_string_t ** message,apr_hash_t * revprops)98 svn_compat_log_revprops_out_string(const svn_string_t **author,
99                                    const svn_string_t **date,
100                                    const svn_string_t **message,
101                                    apr_hash_t *revprops)
102 {
103   *author = *date = *message = NULL;
104   if (revprops)
105     {
106       *author = svn_hash_gets(revprops, SVN_PROP_REVISION_AUTHOR);
107       *date = svn_hash_gets(revprops, SVN_PROP_REVISION_DATE);
108       *message = svn_hash_gets(revprops, SVN_PROP_REVISION_LOG);
109     }
110 }
111 
112 void
svn_compat_log_revprops_out(const char ** author,const char ** date,const char ** message,apr_hash_t * revprops)113 svn_compat_log_revprops_out(const char **author, const char **date,
114                             const char **message, apr_hash_t *revprops)
115 {
116   const svn_string_t *author_s, *date_s,  *message_s;
117   svn_compat_log_revprops_out_string(&author_s, &date_s,  &message_s,
118                                      revprops);
119 
120   *author = author_s ? author_s->data : NULL;
121   *date = date_s ? date_s->data : NULL;
122   *message = message_s ? message_s->data : NULL;
123 }
124 
125 /* Baton for use with svn_compat_wrap_log_receiver */
126 struct log_wrapper_baton {
127   void *baton;
128   svn_log_message_receiver_t receiver;
129 };
130 
131 /* This implements svn_log_entry_receiver_t. */
132 static svn_error_t *
log_wrapper_callback(void * baton,svn_log_entry_t * log_entry,apr_pool_t * pool)133 log_wrapper_callback(void *baton,
134                      svn_log_entry_t *log_entry,
135                      apr_pool_t *pool)
136 {
137   struct log_wrapper_baton *lwb = baton;
138 
139   if (lwb->receiver && SVN_IS_VALID_REVNUM(log_entry->revision))
140     {
141       const char *author, *date, *message;
142       svn_compat_log_revprops_out(&author, &date, &message,
143                                   log_entry->revprops);
144       return lwb->receiver(lwb->baton,
145                            log_entry->changed_paths2,
146                            log_entry->revision,
147                            author, date, message,
148                            pool);
149     }
150 
151   return SVN_NO_ERROR;
152 }
153 
154 void
svn_compat_wrap_log_receiver(svn_log_entry_receiver_t * receiver2,void ** receiver2_baton,svn_log_message_receiver_t receiver,void * receiver_baton,apr_pool_t * pool)155 svn_compat_wrap_log_receiver(svn_log_entry_receiver_t *receiver2,
156                              void **receiver2_baton,
157                              svn_log_message_receiver_t receiver,
158                              void *receiver_baton,
159                              apr_pool_t *pool)
160 {
161   struct log_wrapper_baton *lwb = apr_palloc(pool, sizeof(*lwb));
162 
163   /* Set the user provided old format callback in the baton. */
164   lwb->baton = receiver_baton;
165   lwb->receiver = receiver;
166 
167   *receiver2_baton = lwb;
168   *receiver2 = log_wrapper_callback;
169 }
170