1/*
2 * compat.c:  compatibility shims to adapt between different API versions.
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 "svn_repos.h"
25#include "svn_compat.h"
26#include "svn_hash.h"
27#include "svn_props.h"
28#include "svn_pools.h"
29
30#include "svn_private_config.h"
31
32#include "repos.h"
33
34#include "private/svn_repos_private.h"
35#include "private/svn_subr_private.h"
36
37
38
39/*** log4 -> log5 ***/
40
41/* Baton type to be used with both log4 compatibility callbacks.
42 * For each revision, we collect the CHANGES and then pass them
43 * on to INNER. */
44typedef struct log_entry_receiver_baton_t
45{
46  /* Pool to use to allocate CHANGES and its entries.
47   * Gets cleared after each revision. */
48  apr_pool_t *changes_pool;
49
50  /* Path changes reported so far for the current revision.
51   * Will be NULL before the first item gets added and will be reset
52   * to NULL after the INNER callback has returned. */
53  apr_hash_t *changes;
54
55  /* User-provided callback to send the log entry to. */
56  svn_log_entry_receiver_t inner;
57  void *inner_baton;
58} log_entry_receiver_baton_t;
59
60/* Return the action character (see svn_log_changed_path2_t) for KIND.
61 * Returns 0 for invalid KINDs. */
62static char
63path_change_kind_to_char(svn_fs_path_change_kind_t kind)
64{
65  const char symbol[] = "MADR";
66
67  if (kind < svn_fs_path_change_modify || kind > svn_fs_path_change_replace)
68    return 0;
69
70  return symbol[kind];
71}
72
73/* Implement svn_repos_path_change_receiver_t.
74 * Convert CHANGE and add it to the CHANGES list in *BATON. */
75static svn_error_t *
76log4_path_change_receiver(void *baton,
77                          svn_repos_path_change_t *change,
78                          apr_pool_t *scratch_pool)
79{
80  log_entry_receiver_baton_t *b = baton;
81  svn_log_changed_path2_t *change_copy;
82  const char *path = apr_pstrmemdup(b->changes_pool, change->path.data,
83                                    change->path.len);
84
85  /* Create a deep copy of the temporary CHANGE struct. */
86  change_copy = svn_log_changed_path2_create(b->changes_pool);
87  change_copy->action = path_change_kind_to_char(change->change_kind);
88
89  if (change->copyfrom_path)
90    change_copy->copyfrom_path = apr_pstrdup(b->changes_pool,
91                                             change->copyfrom_path);
92
93  change_copy->copyfrom_rev = change->copyfrom_rev;
94  change_copy->node_kind = change->node_kind;
95  change_copy->text_modified = change->text_mod ? svn_tristate_true
96                                                : svn_tristate_false;
97  change_copy->props_modified = change->prop_mod ? svn_tristate_true
98                                                 : svn_tristate_false;
99
100  /* Auto-create the CHANGES container (happens for each first change
101   * in any revison. */
102  if (b->changes == NULL)
103    b->changes = svn_hash__make(b->changes_pool);
104
105  /* Add change to per-revision collection. */
106  apr_hash_set(b->changes, path, change->path.len, change_copy);
107
108  return SVN_NO_ERROR;
109}
110
111/* Implement svn_log_entry_receiver_t.
112 * Combine the data gathered in BATON for this revision and send it
113 * to the user-provided log4-compatible callback. */
114static svn_error_t *
115log4_entry_receiver(void *baton,
116                    svn_repos_log_entry_t *log_entry,
117                    apr_pool_t *scratch_pool)
118{
119  log_entry_receiver_baton_t *b = baton;
120  svn_log_entry_t *entry = svn_log_entry_create(scratch_pool);
121
122  /* Complete the ENTRY. */
123  entry->changed_paths = b->changes;
124  entry->revision = log_entry->revision;
125  entry->revprops = log_entry->revprops;
126  entry->has_children = log_entry->has_children;
127  entry->changed_paths2 = b->changes;
128  entry->non_inheritable = log_entry->non_inheritable;
129  entry->subtractive_merge = log_entry->subtractive_merge;
130
131  /* Invoke the log4-compatible callback. */
132  SVN_ERR(b->inner(b->inner_baton, entry, scratch_pool));
133
134  /* Release per-revision data. */
135  svn_pool_clear(b->changes_pool);
136  b->changes = NULL;
137
138  return SVN_NO_ERROR;
139}
140
141svn_error_t *
142svn_repos__get_logs_compat(svn_repos_t *repos,
143                           const apr_array_header_t *paths,
144                           svn_revnum_t start,
145                           svn_revnum_t end,
146                           int limit,
147                           svn_boolean_t discover_changed_paths,
148                           svn_boolean_t strict_node_history,
149                           svn_boolean_t include_merged_revisions,
150                           const apr_array_header_t *revprops,
151                           svn_repos_authz_func_t authz_read_func,
152                           void *authz_read_baton,
153                           svn_log_entry_receiver_t receiver,
154                           void *receiver_baton,
155                           apr_pool_t *pool)
156{
157  apr_pool_t *changes_pool = svn_pool_create(pool);
158
159  log_entry_receiver_baton_t baton;
160  baton.changes_pool = changes_pool;
161  baton.changes = NULL;
162  baton.inner = receiver;
163  baton.inner_baton = receiver_baton;
164
165  SVN_ERR(svn_repos_get_logs5(repos, paths, start, end, limit,
166                              strict_node_history,
167                              include_merged_revisions,
168                              revprops,
169                              authz_read_func, authz_read_baton,
170                              discover_changed_paths
171                                ? log4_path_change_receiver
172                                : NULL,
173                              &baton,
174                              log4_entry_receiver, &baton,
175                              pool));
176
177  svn_pool_destroy(changes_pool);
178  return SVN_NO_ERROR;
179}
180