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name-rev: restructure parsing commits and applying date cutoff
At the beginning of the recursive name_rev() function it parses the commit it got as parameter, and returns early if the commit is older than a cutoff limit. Restructure this so the caller parses the commit and checks its date, and doesn't invoke name_rev() if the commit to be passed as parameter is older than the cutoff, i.e. both name_ref() before calling name_rev() and name_rev() itself as it iterates over the parent commits. This makes eliminating the recursion a bit easier to follow, and the condition moved to name_ref() will be moved back to name_rev() after the recursion is eliminated. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -111,11 +111,6 @@ static void name_rev(struct commit *commit,
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struct commit_list *parents;
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int parent_number = 1;
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parse_commit(commit);
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if (commit->date < cutoff)
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return;
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if (!create_or_update_name(commit, tip_name, taggerdate, generation,
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distance, from_tag))
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return;
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@ -123,6 +118,12 @@ static void name_rev(struct commit *commit,
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for (parents = commit->parents;
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parents;
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parents = parents->next, parent_number++) {
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struct commit *parent = parents->item;
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parse_commit(parent);
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if (parent->date < cutoff)
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continue;
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if (parent_number > 1) {
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size_t len;
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char *new_name;
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@ -135,11 +136,11 @@ static void name_rev(struct commit *commit,
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new_name = xstrfmt("%.*s^%d", (int)len, tip_name,
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parent_number);
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name_rev(parents->item, new_name, taggerdate, 0,
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name_rev(parent, new_name, taggerdate, 0,
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distance + MERGE_TRAVERSAL_WEIGHT,
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from_tag);
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} else {
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name_rev(parents->item, tip_name, taggerdate,
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name_rev(parent, tip_name, taggerdate,
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generation + 1, distance + 1,
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from_tag);
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}
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@ -273,17 +274,19 @@ static int name_ref(const char *path, const struct object_id *oid, int flags, vo
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if (o && o->type == OBJ_COMMIT) {
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struct commit *commit = (struct commit *)o;
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int from_tag = starts_with(path, "refs/tags/");
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const char *tip_name;
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if (taggerdate == TIME_MAX)
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taggerdate = commit->date;
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path = name_ref_abbrev(path, can_abbreviate_output);
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if (commit->date >= cutoff) {
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const char *tip_name;
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if (deref)
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tip_name = xstrfmt("%s^0", path);
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else
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tip_name = xstrdup(path);
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name_rev(commit, tip_name, taggerdate, 0, 0, from_tag);
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}
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}
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return 0;
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}
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