![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
| author | Junio C Hamano <gitster@pobox.com> | |
| Wed, 15 Sep 2010 19:39:12 +0000 (12:39 -0700) | ||
| committer | Junio C Hamano <gitster@pobox.com> | |
| Wed, 15 Sep 2010 19:39:12 +0000 (12:39 -0700) |
* ks/recursive-rename-add-identical:
RE: [PATCH] Avoid rename/add conflict when contents are identical
RE: [PATCH] Avoid rename/add conflict when contents are identical
| 1 | 2 | |||
|---|---|---|---|---|
| merge-recursive.c | patch | | diff1 | | diff2 | | blob | history |
| t/t3030-merge-recursive.sh | patch | | diff1 | | diff2 | | blob | history |
diff --combined merge-recursive.c
index 20e1779428ee553a940592c09bbabe9ca9800a39,a2fba84d9d3d1aab5deb10ff1074b065b2a54047..c5746988196b8139ca3234f8b30d03af56d33324
--- 1/merge-recursive.c
--- 2/merge-recursive.c
+++ b/merge-recursive.c
#include "attr.h"
#include "merge-recursive.h"
#include "dir.h"
+#include "submodule.h"
static struct tree *shift_tree_object(struct tree *one, struct tree *two,
const char *subtree_shift)
if (parse_commit(commit) != 0)
printf("(bad commit)\n");
else {
- const char *s;
- int len;
- for (s = commit->buffer; *s; s++)
- if (*s == '\n' && s[1] == '\n') {
- s += 2;
- break;
- }
- for (len = 0; s[len] && '\n' != s[len]; len++)
- ; /* do nothing */
- printf("%.*s\n", len, s);
+ const char *title;
+ int len = find_commit_subject(commit->buffer, &title);
+ if (len)
+ printf("%.*s\n", len, title);
}
}
}
opts.fn = threeway_merge;
opts.src_index = &the_index;
opts.dst_index = &the_index;
- opts.msgs = get_porcelain_error_msgs();
+ setup_unpack_trees_porcelain(&opts, "merge");
init_tree_desc_from_tree(t+0, common);
init_tree_desc_from_tree(t+1, head);
void *buf;
unsigned long size;
- if (S_ISGITLINK(mode))
+ if (S_ISGITLINK(mode)) {
/*
* We may later decide to recursively descend into
* the submodule directory and update its index
* and/or work tree, but we do not do that now.
*/
+ update_wd = 0;
goto update_index;
+ }
buf = read_sha1_file(sha, &type, &size);
if (!buf)
merge_status = ll_merge(result_buf, a->path, &orig, base_name,
&src1, name1, &src2, name2,
- (!!o->call_depth) | (favor << 1));
+ ((o->call_depth ? LL_OPT_VIRTUAL_ANCESTOR : 0) |
+ (o->renormalize ? LL_OPT_RENORMALIZE : 0) |
+ create_ll_flag(favor)));
free(name1);
free(name2);
free(result_buf.ptr);
result.clean = (merge_status == 0);
} else if (S_ISGITLINK(a->mode)) {
- result.clean = 0;
- hashcpy(result.sha, a->sha1);
+ result.clean = merge_submodule(result.sha, one->path, one->sha1,
+ a->sha1, b->sha1);
} else if (S_ISLNK(a->mode)) {
hashcpy(result.sha, a->sha1);
struct string_list *b_renames)
{
int clean_merge = 1, i, j;
- struct string_list a_by_dst = {NULL, 0, 0, 0}, b_by_dst = {NULL, 0, 0, 0};
+ struct string_list a_by_dst = STRING_LIST_INIT_NODUP;
+ struct string_list b_by_dst = STRING_LIST_INIT_NODUP;
const struct rename *sre;
for (i = 0; i < a_renames->nr; i++) {
ren1->pair->two : NULL,
branch1 == o->branch1 ?
NULL : ren1->pair->two, 1);
+ } else if ((dst_other.mode == ren1->pair->two->mode) &&
+ sha_eq(dst_other.sha1, ren1->pair->two->sha1)) {
+ /* Added file on the other side
+ identical to the file being
+ renamed: clean merge */
+ update_file(o, 1, ren1->pair->two->sha1, ren1->pair->two->mode, ren1_dst);
} else if (!sha_eq(dst_other.sha1, null_sha1)) {
const char *new_path;
clean_merge = 0;
if (mfi.clean &&
sha_eq(mfi.sha, ren1->pair->two->sha1) &&
- mfi.mode == ren1->pair->two->mode)
+ mfi.mode == ren1->pair->two->mode) {
/*
- * This messaged is part of
+ * This message is part of
* t6022 test. If you change
* it update the test too.
*/
output(o, 3, "Skipped %s (merged same as existing)", ren1_dst);
- else {
+
+ /* There may be higher stage entries left
+ * in the index (e.g. due to a D/F
+ * conflict) that need to be resolved.
+ */
+ if (!ren1->dst_entry->stages[2].mode !=
+ !ren1->dst_entry->stages[3].mode)
+ ren1->dst_entry->processed = 0;
+ } else {
if (mfi.merge || !mfi.clean)
output(o, 1, "Renaming %s => %s", ren1_src, ren1_dst);
if (mfi.merge)
return (is_null_sha1(sha) || mode == 0) ? NULL: (unsigned char *)sha;
}
+static int read_sha1_strbuf(const unsigned char *sha1, struct strbuf *dst)
+{
+ void *buf;
+ enum object_type type;
+ unsigned long size;
+ buf = read_sha1_file(sha1, &type, &size);
+ if (!buf)
+ return error("cannot read object %s", sha1_to_hex(sha1));
+ if (type != OBJ_BLOB) {
+ free(buf);
+ return error("object %s is not a blob", sha1_to_hex(sha1));
+ }
+ strbuf_attach(dst, buf, size, size + 1);
+ return 0;
+}
+
+static int blob_unchanged(const unsigned char *o_sha,
+ const unsigned char *a_sha,
+ int renormalize, const char *path)
+{
+ struct strbuf o = STRBUF_INIT;
+ struct strbuf a = STRBUF_INIT;
+ int ret = 0; /* assume changed for safety */
+
+ if (sha_eq(o_sha, a_sha))
+ return 1;
+ if (!renormalize)
+ return 0;
+
+ assert(o_sha && a_sha);
+ if (read_sha1_strbuf(o_sha, &o) || read_sha1_strbuf(a_sha, &a))
+ goto error_return;
+ /*
+ * Note: binary | is used so that both renormalizations are
+ * performed. Comparison can be skipped if both files are
+ * unchanged since their sha1s have already been compared.
+ */
+ if (renormalize_buffer(path, o.buf, o.len, &o) |
+ renormalize_buffer(path, a.buf, o.len, &a))
+ ret = (o.len == a.len && !memcmp(o.buf, a.buf, o.len));
+
+error_return:
+ strbuf_release(&o);
+ strbuf_release(&a);
+ return ret;
+}
+
/* Per entry merge function */
static int process_entry(struct merge_options *o,
const char *path, struct stage_data *entry)
print_index_entry("\tpath: ", entry);
*/
int clean_merge = 1;
+ int normalize = o->renormalize;
unsigned o_mode = entry->stages[1].mode;
unsigned a_mode = entry->stages[2].mode;
unsigned b_mode = entry->stages[3].mode;
unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
+ entry->processed = 1;
if (o_sha && (!a_sha || !b_sha)) {
/* Case A: Deleted in one */
if ((!a_sha && !b_sha) ||
- (sha_eq(a_sha, o_sha) && !b_sha) ||
- (!a_sha && sha_eq(b_sha, o_sha))) {
+ (!b_sha && blob_unchanged(o_sha, a_sha, normalize, path)) ||
+ (!a_sha && blob_unchanged(o_sha, b_sha, normalize, path))) {
/* Deleted in both or deleted in one and
* unchanged in the other */
if (a_sha)
} else if ((!o_sha && a_sha && !b_sha) ||
(!o_sha && !a_sha && b_sha)) {
/* Case B: Added in one. */
- const char *add_branch;
- const char *other_branch;
unsigned mode;
const unsigned char *sha;
- const char *conf;
if (a_sha) {
- add_branch = o->branch1;
- other_branch = o->branch2;
mode = a_mode;
sha = a_sha;
- conf = "file/directory";
} else {
- add_branch = o->branch2;
- other_branch = o->branch1;
mode = b_mode;
sha = b_sha;
- conf = "directory/file";
}
if (string_list_has_string(&o->current_directory_set, path)) {
- const char *new_path = unique_path(o, path, add_branch);
- clean_merge = 0;
- output(o, 1, "CONFLICT (%s): There is a directory with name %s in %s. "
- "Adding %s as %s",
- conf, path, other_branch, path, new_path);
- remove_file(o, 0, path, 0);
- update_file(o, 0, sha, mode, new_path);
+ /* Handle D->F conflicts after all subfiles */
+ entry->processed = 0;
+ /* But get any file out of the way now, so conflicted
+ * entries below the directory of the same name can
+ * be put in the working directory.
+ */
+ if (a_sha)
+ output(o, 2, "Removing %s", path);
+ /* do not touch working file if it did not exist */
+ remove_file(o, 0, path, !a_sha);
+ return 1; /* Assume clean till processed */
} else {
output(o, 2, "Adding %s", path);
update_file(o, 1, sha, mode, path);
return clean_merge;
}
-struct unpack_trees_error_msgs get_porcelain_error_msgs(void)
+/*
+ * Per entry merge function for D/F conflicts, to be called only after
+ * all files below dir have been processed. We do this because in the
+ * cases we can cleanly resolve D/F conflicts, process_entry() can clean
+ * out all the files below the directory for us.
+ */
+static int process_df_entry(struct merge_options *o,
+ const char *path, struct stage_data *entry)
{
- struct unpack_trees_error_msgs msgs = {
- /* would_overwrite */
- "Your local changes to '%s' would be overwritten by merge. Aborting.",
- /* not_uptodate_file */
- "Your local changes to '%s' would be overwritten by merge. Aborting.",
- /* not_uptodate_dir */
- "Updating '%s' would lose untracked files in it. Aborting.",
- /* would_lose_untracked */
- "Untracked working tree file '%s' would be %s by merge. Aborting",
- /* bind_overlap -- will not happen here */
- NULL,
- };
- if (advice_commit_before_merge) {
- msgs.would_overwrite = msgs.not_uptodate_file =
- "Your local changes to '%s' would be overwritten by merge. Aborting.\n"
- "Please, commit your changes or stash them before you can merge.";
+ int clean_merge = 1;
+ unsigned o_mode = entry->stages[1].mode;
+ unsigned a_mode = entry->stages[2].mode;
+ unsigned b_mode = entry->stages[3].mode;
+ unsigned char *o_sha = stage_sha(entry->stages[1].sha, o_mode);
+ unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
+ unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
+ const char *add_branch;
+ const char *other_branch;
+ unsigned mode;
+ const unsigned char *sha;
+ const char *conf;
+ struct stat st;
+
+ /* We currently only handle D->F cases */
+ assert((!o_sha && a_sha && !b_sha) ||
+ (!o_sha && !a_sha && b_sha));
+
+ entry->processed = 1;
+
+ if (a_sha) {
+ add_branch = o->branch1;
+ other_branch = o->branch2;
+ mode = a_mode;
+ sha = a_sha;
+ conf = "file/directory";
+ } else {
+ add_branch = o->branch2;
+ other_branch = o->branch1;
+ mode = b_mode;
+ sha = b_sha;
+ conf = "directory/file";
}
- return msgs;
+ if (lstat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+ const char *new_path = unique_path(o, path, add_branch);
+ clean_merge = 0;
+ output(o, 1, "CONFLICT (%s): There is a directory with name %s in %s. "
+ "Adding %s as %s",
+ conf, path, other_branch, path, new_path);
+ remove_file(o, 0, path, 0);
+ update_file(o, 0, sha, mode, new_path);
+ } else {
+ output(o, 2, "Adding %s", path);
+ update_file(o, 1, sha, mode, path);
+ }
+
+ return clean_merge;
}
int merge_trees(struct merge_options *o,
&& !process_entry(o, path, e))
clean = 0;
}
+ for (i = 0; i < entries->nr; i++) {
+ const char *path = entries->items[i].string;
+ struct stage_data *e = entries->items[i].util;
+ if (!e->processed
+ && !process_df_entry(o, path, e))
+ clean = 0;
+ }
string_list_clear(re_merge, 0);
string_list_clear(re_head, 0);
o->buffer_output = 1;
o->diff_rename_limit = -1;
o->merge_rename_limit = -1;
+ o->renormalize = 0;
git_config(merge_recursive_config, o);
if (getenv("GIT_MERGE_VERBOSITY"))
o->verbosity =
diff --combined t/t3030-merge-recursive.sh
index efe2900a372601848248de33188bda292185ba40,df234f144a5f72c85f95ec6d3c218f70eebecfc8..e66e550b2449e76435a0bf16c6a9889c0794f858
git branch df-3 &&
git branch remove &&
git branch submod &&
+ git branch copy &&
+ git branch rename &&
echo hello >>a &&
cp a d/e &&
git commit -m "make d/ a submodule"
'
+ test_expect_success 'setup 8' '
+ git checkout rename &&
+ git mv a e &&
+ git add e &&
+ test_tick &&
+ git commit -m "rename a->e"
+ '
+
+ test_expect_success 'setup 9' '
+ git checkout copy &&
+ cp a e &&
+ git add e &&
+ test_tick &&
+ git commit -m "copy a->e"
+ '
+
test_expect_success 'merge-recursive simple' '
rm -fr [abcd] &&
grep "You have not concluded your merge" out &&
rm -f .git/MERGE_HEAD &&
test_must_fail git merge "$c5" 2> out &&
- grep "Your local changes to .* would be overwritten by merge." out
+ grep "Your local changes to the following files would be overwritten by merge:" out
'
test_expect_success 'merge-recursive remove conflict' '
test_cmp expected actual
'
+ test_expect_success 'merge-recursive copy vs. rename' '
+ git checkout -f copy &&
+ git merge rename &&
+ ( git ls-tree -r HEAD && git ls-files -s ) >actual &&
+ (
+ echo "100644 blob $o0 b"
+ echo "100644 blob $o0 c"
+ echo "100644 blob $o0 d/e"
+ echo "100644 blob $o0 e"
+ echo "100644 $o0 0 b"
+ echo "100644 $o0 0 c"
+ echo "100644 $o0 0 d/e"
+ echo "100644 $o0 0 e"
+ ) >expected &&
+ test_cmp expected actual
+ '
+
test_done