[PATCH] rev-list --objects-edge
From: Junio C Hamano <hidden>
Date: 2016-06-15 22:42:19
Subsystem:
the rest · Maintainer:
Linus Torvalds
This new flag is similar to --objects, but causes rev-list to show list of "uninteresting" commits that appear on the edge commit prefixed with '-'. Downstream pack-objects will be changed to take these as hints to use the trees and blobs contained with them as base objects of resulting pack, producing an incomplete (not self-contained) pack. Such a pack cannot be used in .git/objects/pack (it is prevented by git-index-pack erroring out if it is fed to git-fetch-pack -k or git-clone-pack), but would be useful when transferring only small changes to huge blobs. Signed-off-by: Junio C Hamano <redacted> --- * Together with "thin-pack" patch I'll send next, this will allow you to do the "delta transfer" we discussed on the #git channel last night (eh, *my* last night anyway). rev-list.c | 34 ++++++++++++++++++++++++++++------ rev-parse.c | 1 + 2 files changed, 29 insertions(+), 6 deletions(-) 52de788e6094b31be218f0f69576cbbfb310205f
diff --git a/rev-list.c b/rev-list.c
index f2d1105..373549e 100644
--- a/rev-list.c
+++ b/rev-list.c@@ -30,7 +30,7 @@ static const char rev_list_usage[] = " --date-order\n" " formatting output:\n" " --parents\n" -" --objects\n" +" --objects | --objects-edge\n" " --unpacked\n" " --header | --pretty\n" " --abbrev=nr | --no-abbrev\n"
@@ -44,6 +44,7 @@ static int bisect_list = 0; static int tag_objects = 0; static int tree_objects = 0; static int blob_objects = 0; +static int edge_hint = 0; static int verbose_header = 0; static int abbrev = DEFAULT_ABBREV; static int show_parents = 0;
@@ -430,16 +431,30 @@ static struct commit_list *find_bisectio return best; } +static void mark_edge_parents_uninteresting(struct commit *commit) +{ + struct commit_list *parents; + + for (parents = commit->parents; parents; parents = parents->next) { + struct commit *parent = parents->item; + if (!(parent->object.flags & UNINTERESTING)) + continue; + mark_tree_uninteresting(parent->tree); + if (edge_hint) + printf("-%s\n", sha1_to_hex(parent->object.sha1)); + } +} + static void mark_edges_uninteresting(struct commit_list *list) { for ( ; list; list = list->next) { - struct commit_list *parents = list->item->parents; + struct commit *commit = list->item; - for ( ; parents; parents = parents->next) { - struct commit *commit = parents->item; - if (commit->object.flags & UNINTERESTING) - mark_tree_uninteresting(commit->tree); + if (commit->object.flags & UNINTERESTING) { + mark_tree_uninteresting(commit->tree); + continue; } + mark_edge_parents_uninteresting(commit); } }
@@ -843,6 +858,13 @@ int main(int argc, const char **argv) blob_objects = 1; continue; } + if (!strcmp(arg, "--objects-edge")) { + tag_objects = 1; + tree_objects = 1; + blob_objects = 1; + edge_hint = 1; + continue; + } if (!strcmp(arg, "--unpacked")) { unpacked = 1; limited = 1;
diff --git a/rev-parse.c b/rev-parse.c
index a5fb93c..610eacb 100644
--- a/rev-parse.c
+++ b/rev-parse.c@@ -43,6 +43,7 @@ static int is_rev_argument(const char *a "--min-age=", "--no-merges", "--objects", + "--objects-edge", "--parents", "--pretty", "--show-breaks",
--
1.2.2.g0d27