From d76ce4f734634f47b467b7f6eea11d6bf8c81f22 Mon Sep 17 00:00:00 2001 From: Elijah Newren Date: Thu, 7 Feb 2019 17:12:46 -0800 Subject: log,diff-tree: add --combined-all-paths option The combined diff format for merges will only list one filename, even if rename or copy detection is active. For example, with raw format one might see: ::100644 100644 100644 fabadb8 cc95eb0 4866510 MM describe.c ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM bar.sh ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR phooey.c This doesn't let us know what the original name of bar.sh was in the first parent, and doesn't let us know what either of the original names of phooey.c were in either of the parents. In contrast, for non-merge commits, raw format does provide original filenames (and a rename score to boot). In order to also provide original filenames for merge commits, add a --combined-all-paths option (which must be used with either -c or --cc, and is likely only useful with rename or copy detection active) so that we can print tab-separated filenames when renames are involved. This transforms the above output to: ::100644 100644 100644 fabadb8 cc95eb0 4866510 MM desc.c desc.c desc.c ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM foo.sh bar.sh bar.sh ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR fooey.c fuey.c phooey.c Further, in patch format, this changes the from/to headers so that instead of just having one "from" header, we get one for each parent. For example, instead of having --- a/phooey.c +++ b/phooey.c we would see --- a/fooey.c --- a/fuey.c +++ b/phooey.c Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano --- combine-diff.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 65 insertions(+), 11 deletions(-) (limited to 'combine-diff.c') diff --git a/combine-diff.c b/combine-diff.c index a143c00634..54cb892ae5 100644 --- a/combine-diff.c +++ b/combine-diff.c @@ -23,11 +23,20 @@ static int compare_paths(const struct combine_diff_path *one, two->path, strlen(two->path), two->mode); } -static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, int n, int num_parent) +static int filename_changed(char status) +{ + return status == 'R' || status == 'C'; +} + +static struct combine_diff_path *intersect_paths( + struct combine_diff_path *curr, + int n, + int num_parent, + int combined_all_paths) { struct diff_queue_struct *q = &diff_queued_diff; struct combine_diff_path *p, **tail = &curr; - int i, cmp; + int i, j, cmp; if (!n) { for (i = 0; i < q->nr; i++) { @@ -50,6 +59,13 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, oidcpy(&p->parent[n].oid, &q->queue[i]->one->oid); p->parent[n].mode = q->queue[i]->one->mode; p->parent[n].status = q->queue[i]->status; + + if (combined_all_paths && + filename_changed(p->parent[n].status)) { + strbuf_init(&p->parent[n].path, 0); + strbuf_addstr(&p->parent[n].path, + q->queue[i]->one->path); + } *tail = p; tail = &p->next; } @@ -68,6 +84,10 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, if (cmp < 0) { /* p->path not in q->queue[]; drop it */ *tail = p->next; + for (j = 0; j < num_parent; j++) + if (combined_all_paths && + filename_changed(p->parent[j].status)) + strbuf_release(&p->parent[j].path); free(p); continue; } @@ -81,6 +101,10 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, oidcpy(&p->parent[n].oid, &q->queue[i]->one->oid); p->parent[n].mode = q->queue[i]->one->mode; p->parent[n].status = q->queue[i]->status; + if (combined_all_paths && + filename_changed(p->parent[n].status)) + strbuf_addstr(&p->parent[n].path, + q->queue[i]->one->path); tail = &p->next; i++; @@ -960,12 +984,25 @@ static void show_combined_header(struct combine_diff_path *elem, if (!show_file_header) return; - if (added) - dump_quoted_path("--- ", "", "/dev/null", - line_prefix, c_meta, c_reset); - else - dump_quoted_path("--- ", a_prefix, elem->path, - line_prefix, c_meta, c_reset); + if (rev->combined_all_paths) { + for (i = 0; i < num_parent; i++) { + char *path = filename_changed(elem->parent[i].status) + ? elem->parent[i].path.buf : elem->path; + if (elem->parent[i].status == DIFF_STATUS_ADDED) + dump_quoted_path("--- ", "", "/dev/null", + line_prefix, c_meta, c_reset); + else + dump_quoted_path("--- ", a_prefix, path, + line_prefix, c_meta, c_reset); + } + } else { + if (added) + dump_quoted_path("--- ", "", "/dev/null", + line_prefix, c_meta, c_reset); + else + dump_quoted_path("--- ", a_prefix, elem->path, + line_prefix, c_meta, c_reset); + } if (deleted) dump_quoted_path("+++ ", "", "/dev/null", line_prefix, c_meta, c_reset); @@ -1227,6 +1264,15 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re putchar(inter_name_termination); } + for (i = 0; i < num_parent; i++) + if (rev->combined_all_paths) { + if (filename_changed(p->parent[i].status)) + write_name_quoted(p->parent[i].path.buf, stdout, + inter_name_termination); + else + write_name_quoted(p->path, stdout, + inter_name_termination); + } write_name_quoted(p->path, stdout, line_termination); } @@ -1324,7 +1370,9 @@ static const char *path_path(void *obj) /* find set of paths that every parent touches */ static struct combine_diff_path *find_paths_generic(const struct object_id *oid, - const struct oid_array *parents, struct diff_options *opt) + const struct oid_array *parents, + struct diff_options *opt, + int combined_all_paths) { struct combine_diff_path *paths = NULL; int i, num_parent = parents->nr; @@ -1350,7 +1398,8 @@ static struct combine_diff_path *find_paths_generic(const struct object_id *oid, opt->output_format = DIFF_FORMAT_NO_OUTPUT; diff_tree_oid(&parents->oid[i], oid, "", opt); diffcore_std(opt); - paths = intersect_paths(paths, i, num_parent); + paths = intersect_paths(paths, i, num_parent, + combined_all_paths); /* if showing diff, show it in requested order */ if (opt->output_format != DIFF_FORMAT_NO_OUTPUT && @@ -1460,7 +1509,8 @@ void diff_tree_combined(const struct object_id *oid, * diff(sha1,parent_i) for all i to do the job, specifically * for parent0. */ - paths = find_paths_generic(oid, parents, &diffopts); + paths = find_paths_generic(oid, parents, &diffopts, + rev->combined_all_paths); } else { int stat_opt; @@ -1535,6 +1585,10 @@ void diff_tree_combined(const struct object_id *oid, while (paths) { struct combine_diff_path *tmp = paths; paths = paths->next; + for (i = 0; i < num_parent; i++) + if (rev->combined_all_paths && + filename_changed(tmp->parent[i].status)) + strbuf_release(&tmp->parent[i].path); free(tmp); } -- cgit v1.2.3