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authorLibravatar Jeff King <peff@peff.net>2014-10-15 18:43:19 -0400
committerLibravatar Junio C Hamano <gitster@pobox.com>2014-10-19 15:06:31 -0700
commit207394908e9465d0169608725aeaa5bb355086e0 (patch)
treedd3febfb6ac93dd6247aa4e922601849ca265305 /t/t5515/fetch.br-config-glob-merge_config-glob
parentmake add_object_array_with_context interface more sane (diff)
downloadtgif-207394908e9465d0169608725aeaa5bb355086e0.tar.xz
traverse_commit_list: support pending blobs/trees with paths
When we call traverse_commit_list, we may have trees and blobs in the pending array. As we process these, we pass the "name" field from the pending entry as the path of the object within the tree (which then becomes the root path if we recurse into subtrees). When we set up the traversal in prepare_revision_walk, though, the "name" field of any pending trees and blobs is likely to be the ref at which we found the object. We would not want to make this part of the path (e.g., doing so would make "git rev-list --objects v2.6.11-tree" in linux.git show paths like "v2.6.11-tree/Makefile", which is nonsensical). Therefore prepare_revision_walk sets the name field of each pending tree and blobs to the empty string. However, this leaves no room for a caller who does know the correct path of a pending object to propagate that information to the revision walker. We can fix this by making two related changes: 1. Use the "path" field as the path instead of the "name" field in traverse_commit_list. If the path is not set, default to "" (which is what we always ended up with in the current code, because of prepare_revision_walk). 2. In prepare_revision_walk, make a complete copy of the entry. This makes the path field available to the walker (if there is one), solving our problem. Leaving the name field intact is now OK, as we do not use it as a path due to point (1) above (and we can use it to make more meaningful error messages if we want). We also make the original "mode" field available to the walker, though it does not actually use it. Note that we still re-add the pending objects and free the old ones (so we may strdup the path and name only to free the old ones). This could be made more efficient by simply copying the object_array entries that we are keeping. However, that would require more restructuring of the code, and is not done here. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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