1 /*
2 * revisions.c: discovering revisions
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
25
26 #include <apr_pools.h>
27
28 #include "svn_error.h"
29 #include "svn_ra.h"
30 #include "svn_dirent_uri.h"
31 #include "svn_path.h"
32 #include "client.h"
33
34 #include "svn_private_config.h"
35 #include "private/svn_wc_private.h"
36
37
38
39
40 svn_error_t *
svn_client__get_revision_number(svn_revnum_t * revnum,svn_revnum_t * youngest_rev,svn_wc_context_t * wc_ctx,const char * local_abspath,svn_ra_session_t * ra_session,const svn_opt_revision_t * revision,apr_pool_t * scratch_pool)41 svn_client__get_revision_number(svn_revnum_t *revnum,
42 svn_revnum_t *youngest_rev,
43 svn_wc_context_t *wc_ctx,
44 const char *local_abspath,
45 svn_ra_session_t *ra_session,
46 const svn_opt_revision_t *revision,
47 apr_pool_t *scratch_pool)
48 {
49 switch (revision->kind)
50 {
51 case svn_opt_revision_unspecified:
52 *revnum = SVN_INVALID_REVNUM;
53 break;
54
55 case svn_opt_revision_number:
56 *revnum = revision->value.number;
57 break;
58
59 case svn_opt_revision_head:
60 /* If our caller provided a value for HEAD that he wants us to
61 use, we'll use it. Otherwise, we have to query the
62 repository (and possible return our fetched value in
63 *YOUNGEST_REV, too). */
64 if (youngest_rev && SVN_IS_VALID_REVNUM(*youngest_rev))
65 {
66 *revnum = *youngest_rev;
67 }
68 else
69 {
70 if (! ra_session)
71 return svn_error_create(SVN_ERR_CLIENT_RA_ACCESS_REQUIRED,
72 NULL, NULL);
73 SVN_ERR(svn_ra_get_latest_revnum(ra_session, revnum, scratch_pool));
74 if (youngest_rev)
75 *youngest_rev = *revnum;
76 }
77 break;
78
79 case svn_opt_revision_working:
80 case svn_opt_revision_base:
81 {
82 svn_error_t *err;
83
84 /* Sanity check. */
85 if (local_abspath == NULL)
86 return svn_error_create(SVN_ERR_CLIENT_VERSIONED_PATH_REQUIRED,
87 NULL, NULL);
88
89 /* The BASE, COMMITTED, and PREV revision keywords do not
90 apply to URLs. */
91 if (svn_path_is_url(local_abspath))
92 return svn_error_create(SVN_ERR_CLIENT_BAD_REVISION, NULL,
93 _("PREV, BASE, or COMMITTED revision "
94 "keywords are invalid for URL"));
95
96 err = svn_wc__node_get_origin(NULL, revnum, NULL, NULL, NULL, NULL,
97 NULL,
98 wc_ctx, local_abspath, TRUE,
99 scratch_pool, scratch_pool);
100
101 /* Return the same error as older code did (before and at r935091).
102 At least svn_client_proplist4 promises SVN_ERR_ENTRY_NOT_FOUND. */
103 if (err && err->apr_err == SVN_ERR_WC_PATH_NOT_FOUND)
104 {
105 svn_error_clear(err);
106 return svn_error_createf(SVN_ERR_ENTRY_NOT_FOUND, NULL,
107 _("'%s' is not under version control"),
108 svn_dirent_local_style(local_abspath,
109 scratch_pool));
110 }
111 else
112 SVN_ERR(err);
113
114 if (! SVN_IS_VALID_REVNUM(*revnum))
115 return svn_error_createf(SVN_ERR_CLIENT_BAD_REVISION, NULL,
116 _("Path '%s' has no committed "
117 "revision"),
118 svn_dirent_local_style(local_abspath,
119 scratch_pool));
120 }
121 break;
122
123 case svn_opt_revision_committed:
124 case svn_opt_revision_previous:
125 {
126 /* Sanity check. */
127 if (local_abspath == NULL)
128 return svn_error_create(SVN_ERR_CLIENT_VERSIONED_PATH_REQUIRED,
129 NULL, NULL);
130
131 /* The BASE, COMMITTED, and PREV revision keywords do not
132 apply to URLs. */
133 if (svn_path_is_url(local_abspath))
134 return svn_error_create(SVN_ERR_CLIENT_BAD_REVISION, NULL,
135 _("PREV, BASE, or COMMITTED revision "
136 "keywords are invalid for URL"));
137
138 SVN_ERR(svn_wc__node_get_changed_info(revnum, NULL, NULL,
139 wc_ctx, local_abspath,
140 scratch_pool, scratch_pool));
141 if (! SVN_IS_VALID_REVNUM(*revnum))
142 return svn_error_createf(SVN_ERR_CLIENT_BAD_REVISION, NULL,
143 _("Path '%s' has no committed "
144 "revision"),
145 svn_dirent_local_style(local_abspath,
146 scratch_pool));
147
148 if (revision->kind == svn_opt_revision_previous)
149 {
150 if (*revnum == 0)
151 return svn_error_createf(
152 SVN_ERR_CLIENT_BAD_REVISION, NULL,
153 _("Path '%s' has no previous revision"),
154 svn_dirent_local_style(local_abspath, scratch_pool));
155 --(*revnum);
156 }
157 }
158 break;
159
160 case svn_opt_revision_date:
161 /* ### When revision->kind == svn_opt_revision_date, is there an
162 ### optimization such that we can compare
163 ### revision->value->date with the committed-date in the
164 ### entries file (or rather, with some range of which
165 ### committed-date is one endpoint), and sometimes avoid a
166 ### trip over the RA layer? The only optimizations I can
167 ### think of involve examining other entries to build a
168 ### timespan across which committed-revision is known to be
169 ### the head, but it doesn't seem worth it. -kff */
170 if (! ra_session)
171 return svn_error_create(SVN_ERR_CLIENT_RA_ACCESS_REQUIRED, NULL, NULL);
172 SVN_ERR(svn_ra_get_dated_revision(ra_session, revnum,
173 revision->value.date, scratch_pool));
174 break;
175
176 default:
177 return svn_error_createf(SVN_ERR_CLIENT_BAD_REVISION, NULL,
178 _("Unrecognized revision type requested for "
179 "'%s'"),
180 svn_dirent_local_style(local_abspath,
181 scratch_pool));
182 }
183
184 /* Final check -- if our caller provided a youngest revision, and
185 the number we wound up with (after talking to the server) is younger
186 than that revision, we need to stick to our caller's idea of "youngest".
187 */
188 if (youngest_rev
189 && (revision->kind == svn_opt_revision_head
190 || revision->kind == svn_opt_revision_date)
191 && SVN_IS_VALID_REVNUM(*youngest_rev)
192 && SVN_IS_VALID_REVNUM(*revnum)
193 && (*revnum > *youngest_rev))
194 *revnum = *youngest_rev;
195
196 return SVN_NO_ERROR;
197 }
198