marmoute added a comment.
marmoute updated this revision to Diff 19892.

  rebase to latest default

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST UPDATE
  https://phab.mercurial-scm.org/D7844?vs=19833&id=19892

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7844/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7844

AFFECTED FILES
  mercurial/revlogutils/nodemap.py

CHANGE DETAILS

diff --git a/mercurial/revlogutils/nodemap.py b/mercurial/revlogutils/nodemap.py
--- a/mercurial/revlogutils/nodemap.py
+++ b/mercurial/revlogutils/nodemap.py
@@ -310,3 +310,30 @@
         return block_map[id(item)]
     else:
         return _transform_rev(item)
+
+
+def parse_data(data):
+    """parse parse nodemap data into a nodemap Trie"""
+    if (len(data) % S_BLOCK.size) != 0:
+        msg = "nodemap data size is not a multiple of block size (%d): %d"
+        raise error.Abort(msg % (S_BLOCK.size, len(data)))
+    if not data:
+        return Block()
+    block_map = {}
+    new_blocks = []
+    for i in range(0, len(data), S_BLOCK.size):
+        block = Block()
+        ondisk_id = len(block_map)
+        block_map[ondisk_id] = block
+        block_data = data[i : i + S_BLOCK.size]
+        values = S_BLOCK.unpack(block_data)
+        new_blocks.append((block, values))
+    for b, values in new_blocks:
+        for idx, v in enumerate(values):
+            if v == NO_ENTRY:
+                continue
+            elif v >= 0:
+                b[idx] = block_map[v]
+            else:
+                b[idx] = _transform_rev(v)
+    return block



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Cc: mercurial-devel
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