Thomas Gummerer <t.gummerer@xxxxxxxxx> writes:
> Make git read the resolve-undo data from the index.
>
> Since the resolve-undo data is joined with the conflicts in
> the ondisk format of the index file version 5, conflicts and
> resolved data is read at the same time, and the resolve-undo
> data is then converted to the in-memory format.
This, and the next one, are both about reading extension data from
the v2 formatted index, no?
Again, mild NAK.
I think it is a lot more logical for the v5 code to read data stored
in the resolve-undo and cache-tree extensions using the public API
just like other users of these data do, and write out whatever in a
way that is specific to the v5 index format.
If the v5 codepath needs some information that is not exposed to
other users of istate->resolve_undo and istate->cache_tree, then the
story is different, but I do not think that is the case.
>
> Helped-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
> Signed-off-by: Thomas Gummerer <t.gummerer@xxxxxxxxx>
> ---
> read-cache-v5.c | 1 +
> resolve-undo.c | 36 ++++++++++++++++++++++++++++++++++++
> resolve-undo.h | 2 ++
> 3 files changed, 39 insertions(+)
>
> diff --git a/read-cache-v5.c b/read-cache-v5.c
> index ec1201d..b47398d 100644
> --- a/read-cache-v5.c
> +++ b/read-cache-v5.c
> @@ -494,6 +494,7 @@ static struct directory_entry *read_entries(struct index_state *istate,
> int i;
>
> conflict_queue = read_conflicts(de, mmap, mmap_size, fd);
> + resolve_undo_convert_v5(istate, conflict_queue);
> for (i = 0; i < de->de_nfiles; i++) {
> ce = read_entry(de,
> entry_offset,
> diff --git a/resolve-undo.c b/resolve-undo.c
> index 72b4612..f96c6ba 100644
> --- a/resolve-undo.c
> +++ b/resolve-undo.c
> @@ -170,3 +170,39 @@ void unmerge_index(struct index_state *istate, const char **pathspec)
> i = unmerge_index_entry_at(istate, i);
> }
> }
> +
> +void resolve_undo_convert_v5(struct index_state *istate,
> + struct conflict_entry *ce)
> +{
> + int i;
> +
> + while (ce) {
> + struct string_list_item *lost;
> + struct resolve_undo_info *ui;
> + struct conflict_part *cp;
> +
> + if (ce->entries && (ce->entries->flags & CONFLICT_CONFLICTED) != 0) {
> + ce = ce->next;
> + continue;
> + }
> + if (!istate->resolve_undo) {
> + istate->resolve_undo = xcalloc(1, sizeof(struct string_list));
> + istate->resolve_undo->strdup_strings = 1;
> + }
> +
> + lost = string_list_insert(istate->resolve_undo, ce->name);
> + if (!lost->util)
> + lost->util = xcalloc(1, sizeof(*ui));
> + ui = lost->util;
> +
> + cp = ce->entries;
> + for (i = 0; i < 3; i++)
> + ui->mode[i] = 0;
> + while (cp) {
> + ui->mode[conflict_stage(cp) - 1] = cp->entry_mode;
> + hashcpy(ui->sha1[conflict_stage(cp) - 1], cp->sha1);
> + cp = cp->next;
> + }
> + ce = ce->next;
> + }
> +}
> diff --git a/resolve-undo.h b/resolve-undo.h
> index 8458769..ab660a6 100644
> --- a/resolve-undo.h
> +++ b/resolve-undo.h
> @@ -13,4 +13,6 @@ extern void resolve_undo_clear_index(struct index_state *);
> extern int unmerge_index_entry_at(struct index_state *, int);
> extern void unmerge_index(struct index_state *, const char **);
>
> +extern void resolve_undo_convert_v5(struct index_state *, struct conflict_entry *);
> +
> #endif
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