vendor/subversion/subversion-1.10.0

1 files changed, 132 insertions, 0 deletions

diff --git a/subversion/libsvn_delta/branch_repos.c b/subversion/libsvn_delta/branch_repos.c
new file mode 100644
index 0000000000000..1ba86b193c4da
--- /dev/null
+++ b/subversion/libsvn_delta/branch_repos.c
@@ -0,0 +1,132 @@
+/*
+ * branch_repos.c : Element-Based Branching and Move Tracking.
+ *
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ */
+
+#include <assert.h>
+
+#include "svn_types.h"
+#include "svn_error.h"
+#include "svn_dirent_uri.h"
+#include "svn_iter.h"
+
+#include "private/svn_branch_repos.h"
+#include "svn_private_config.h"
+
+
+/* Per-repository branching info.
+ */
+struct svn_branch__repos_t
+{
+  /* Array of (svn_branch__txn_t *), indexed by revision number. */
+  apr_array_header_t *rev_roots;
+
+  /* The pool in which this object lives. */
+  apr_pool_t *pool;
+};
+
+
+svn_branch__repos_t *
+svn_branch__repos_create(apr_pool_t *result_pool)
+{
+  svn_branch__repos_t *repos = apr_pcalloc(result_pool, sizeof(*repos));
+
+  repos->rev_roots = apr_array_make(result_pool, 0, sizeof(void *));
+  repos->pool = result_pool;
+  return repos;
+}
+
+svn_error_t *
+svn_branch__repos_add_revision(svn_branch__repos_t *repos,
+                               svn_branch__txn_t *rev_root)
+{
+  APR_ARRAY_PUSH(repos->rev_roots, void *) = rev_root;
+
+  return SVN_NO_ERROR;
+}
+
+struct svn_branch__txn_t *
+svn_branch__repos_get_revision(const svn_branch__repos_t *repos,
+                               svn_revnum_t revnum)
+{
+  assert(revnum < repos->rev_roots->nelts);
+  return APR_ARRAY_IDX(repos->rev_roots, revnum, void *);
+}
+
+svn_branch__txn_t *
+svn_branch__repos_get_base_revision_root(svn_branch__txn_t *rev_root)
+{
+  return svn_branch__repos_get_revision(rev_root->repos, rev_root->base_rev);
+}
+
+svn_error_t *
+svn_branch__repos_get_branch_by_id(svn_branch__state_t **branch_p,
+                                   const svn_branch__repos_t *repos,
+                                   svn_revnum_t revnum,
+                                   const char *branch_id,
+                                   apr_pool_t *scratch_pool)
+{
+  svn_branch__txn_t *rev_root;
+
+  if (revnum < 0 || revnum >= repos->rev_roots->nelts)
+    return svn_error_createf(SVN_ERR_FS_NO_SUCH_REVISION, NULL,
+                             _("No such revision %ld"), revnum);
+
+  rev_root = svn_branch__repos_get_revision(repos, revnum);
+  *branch_p = svn_branch__txn_get_branch_by_id(rev_root, branch_id,
+                                               scratch_pool);
+  if (! *branch_p)
+    return svn_error_createf(SVN_BRANCH__ERR, NULL,
+                             _("Branch %s not found in r%ld"),
+                             branch_id, revnum);
+  return SVN_NO_ERROR;
+}
+
+svn_error_t *
+svn_branch__repos_find_el_rev_by_id(svn_branch__el_rev_id_t **el_rev_p,
+                                    const svn_branch__repos_t *repos,
+                                    svn_revnum_t revnum,
+                                    const char *branch_id,
+                                    int eid,
+                                    apr_pool_t *result_pool,
+                                    apr_pool_t *scratch_pool)
+{
+  svn_branch__el_rev_id_t *el_rev = apr_palloc(result_pool, sizeof(*el_rev));
+  svn_element__content_t *element;
+
+  el_rev->rev = revnum;
+  SVN_ERR(svn_branch__repos_get_branch_by_id(&el_rev->branch,
+                                             repos, revnum, branch_id,
+                                             scratch_pool));
+  SVN_ERR(svn_branch__state_get_element(el_rev->branch, &element,
+                                        eid, scratch_pool));
+  if (element)
+    {
+      el_rev->eid = eid;
+    }
+  else
+    {
+      el_rev->eid = -1;
+    }
+  *el_rev_p = el_rev;
+  return SVN_NO_ERROR;
+}
+