diff options
Diffstat (limited to 'apply.c')
| -rw-r--r-- | apply.c | 56 |
1 files changed, 42 insertions, 14 deletions
@@ -101,9 +101,9 @@ int init_apply_state(struct apply_state *state, state->ws_error_action = warn_on_ws_error; state->ws_ignore_action = ignore_ws_none; state->linenr = 1; - string_list_init(&state->fn_table, 0); - string_list_init(&state->limit_by_name, 0); - string_list_init(&state->symlink_changes, 0); + string_list_init_nodup(&state->fn_table); + string_list_init_nodup(&state->limit_by_name); + string_list_init_nodup(&state->symlink_changes); strbuf_init(&state->root, 0); git_apply_config(); @@ -134,8 +134,6 @@ int check_apply_state(struct apply_state *state, int force_apply) if (state->apply_with_reject && state->threeway) return error(_("--reject and --3way cannot be used together.")); - if (state->cached && state->threeway) - return error(_("--cached and --3way cannot be used together.")); if (state->threeway) { if (is_not_gitdir) return error(_("--3way outside a repository")); @@ -1919,6 +1917,7 @@ static struct fragment *parse_binary_hunk(struct apply_state *state, state->linenr++; buffer += llen; + size -= llen; while (1) { int byte_length, max_byte_length, newsize; llen = linelen(buffer, size); @@ -3469,6 +3468,21 @@ static int load_preimage(struct apply_state *state, return 0; } +static int resolve_to(struct image *image, const struct object_id *result_id) +{ + unsigned long size; + enum object_type type; + + clear_image(image); + + image->buf = read_object_file(result_id, &type, &size); + if (!image->buf || type != OBJ_BLOB) + die("unable to read blob object %s", oid_to_hex(result_id)); + image->len = size; + + return 0; +} + static int three_way_merge(struct apply_state *state, struct image *image, char *path, @@ -3480,6 +3494,12 @@ static int three_way_merge(struct apply_state *state, mmbuffer_t result = { NULL }; int status; + /* resolve trivial cases first */ + if (oideq(base, ours)) + return resolve_to(image, theirs); + else if (oideq(base, theirs) || oideq(ours, theirs)) + return resolve_to(image, ours); + read_mmblob(&base_file, base); read_mmblob(&our_file, ours); read_mmblob(&their_file, theirs); @@ -3570,10 +3590,10 @@ static int try_threeway(struct apply_state *state, write_object_file("", 0, blob_type, &pre_oid); else if (get_oid(patch->old_oid_prefix, &pre_oid) || read_blob_object(&buf, &pre_oid, patch->old_mode)) - return error(_("repository lacks the necessary blob to fall back on 3-way merge.")); + return error(_("repository lacks the necessary blob to perform 3-way merge.")); - if (state->apply_verbosity > verbosity_silent) - fprintf(stderr, _("Falling back to three-way merge...\n")); + if (state->apply_verbosity > verbosity_silent && patch->direct_to_threeway) + fprintf(stderr, _("Performing three-way merge...\n")); img = strbuf_detach(&buf, &len); prepare_image(&tmp_image, img, len, 1); @@ -3605,7 +3625,7 @@ static int try_threeway(struct apply_state *state, if (status < 0) { if (state->apply_verbosity > verbosity_silent) fprintf(stderr, - _("Failed to fall back on three-way merge...\n")); + _("Failed to perform three-way merge...\n")); return status; } @@ -3638,10 +3658,13 @@ static int apply_data(struct apply_state *state, struct patch *patch, if (load_preimage(state, &image, patch, st, ce) < 0) return -1; - if (patch->direct_to_threeway || - apply_fragments(state, &image, patch) < 0) { + if (!state->threeway || try_threeway(state, &image, patch, st, ce) < 0) { + if (state->apply_verbosity > verbosity_silent && + state->threeway && !patch->direct_to_threeway) + fprintf(stderr, _("Falling back to direct application...\n")); + /* Note: with --reject, apply_fragments() returns 0 */ - if (!state->threeway || try_threeway(state, &image, patch, st, ce) < 0) + if (patch->direct_to_threeway || apply_fragments(state, &image, patch) < 0) return -1; } patch->result = image.buf; @@ -4647,7 +4670,12 @@ static int write_out_results(struct apply_state *state, struct patch *list) } string_list_clear(&cpath, 0); - repo_rerere(state->repo, 0); + /* + * rerere relies on the partially merged result being in the working + * tree with conflict markers, but that isn't written with --cached. + */ + if (!state->cached) + repo_rerere(state->repo, 0); } return errs; @@ -5018,7 +5046,7 @@ int apply_parse_options(int argc, const char **argv, OPT_BOOL(0, "apply", force_apply, N_("also apply the patch (use with --stat/--summary/--check)")), OPT_BOOL('3', "3way", &state->threeway, - N_( "attempt three-way merge if a patch does not apply")), + N_( "attempt three-way merge, fall back on normal patch if that fails")), OPT_FILENAME(0, "build-fake-ancestor", &state->fake_ancestor, N_("build a temporary index based on embedded index information")), /* Think twice before adding "--nul" synonym to this */ |