subversion-1.9.7HEADsubversion-1.9.7master

1 files changed, 90 insertions, 0 deletions

diff --git a/subversion/libsvn_fs_fs/dump-index.c b/subversion/libsvn_fs_fs/dump-index.c
new file mode 100644
index 0000000..c97be10
--- /dev/null
+++ b/subversion/libsvn_fs_fs/dump-index.c
@@ -0,0 +1,90 @@
+/* dump-index.c -- implements the svn_fs_fs__dump_index private API
+ *
+ * ====================================================================
+ *    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 "svn_pools.h"
+#include "private/svn_fs_fs_private.h"
+
+#include "index.h"
+#include "rev_file.h"
+#include "util.h"
+
+#include "../libsvn_fs/fs-loader.h"
+
+svn_error_t *
+svn_fs_fs__dump_index(svn_fs_t *fs,
+                      svn_revnum_t revision,
+                      svn_fs_fs__dump_index_func_t callback_func,
+                      void *callback_baton,
+                      svn_cancel_func_t cancel_func,
+                      void *cancel_baton,
+                      apr_pool_t *scratch_pool)
+{
+  fs_fs_data_t *ffd = fs->fsap_data;
+  svn_fs_fs__revision_file_t *rev_file;
+  int i;
+  apr_off_t offset, max_offset;
+  apr_pool_t *iterpool = svn_pool_create(scratch_pool);
+
+  /* Check the FS format. */
+  if (! svn_fs_fs__use_log_addressing(fs))
+    return svn_error_create(SVN_ERR_FS_UNSUPPORTED_FORMAT, NULL, NULL);
+
+  /* Revision & index file access object. */
+  SVN_ERR(svn_fs_fs__open_pack_or_rev_file(&rev_file, fs, revision,
+                                           scratch_pool, iterpool));
+
+  /* Offset range to cover. */
+  SVN_ERR(svn_fs_fs__p2l_get_max_offset(&max_offset, fs, rev_file, revision,
+                                        scratch_pool));
+
+  /* Walk through all P2L index entries in offset order. */
+  for (offset = 0; offset < max_offset; )
+    {
+      apr_array_header_t *entries;
+
+      /* Read entries for the next block.  There will be no overlaps since
+       * we start at the first offset not covered. */
+      svn_pool_clear(iterpool);
+      SVN_ERR(svn_fs_fs__p2l_index_lookup(&entries, fs, rev_file, revision,
+                                          offset, ffd->p2l_page_size,
+                                          iterpool, iterpool));
+
+      /* Print entries for this block, one line per entry. */
+      for (i = 0; i < entries->nelts && offset < max_offset; ++i)
+        {
+          const svn_fs_fs__p2l_entry_t *entry
+            = &APR_ARRAY_IDX(entries, i, const svn_fs_fs__p2l_entry_t);
+          offset = entry->offset + entry->size;
+
+          /* Cancellation support */
+          if (cancel_func)
+            SVN_ERR(cancel_func(cancel_baton));
+
+          /* Invoke processing callback. */
+          SVN_ERR(callback_func(entry, callback_baton, iterpool));
+        }
+    }
+
+  svn_pool_destroy(iterpool);
+
+  return SVN_NO_ERROR;
+}