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-rw-r--r--Makefile4
-rw-r--r--builtin/merge-index.c4
-rw-r--r--builtin/merge-tree.c92
-rw-r--r--merge-blobs.c (renamed from merge-file.c)4
-rw-r--r--merge-blobs.h8
-rw-r--r--merge-file.h7
-rw-r--r--merge-recursive.c6
-rwxr-xr-xt/t4300-merge-tree.sh44
8 files changed, 118 insertions, 51 deletions
diff --git a/Makefile b/Makefile
index 05d241bc12..a8383dc288 100644
--- a/Makefile
+++ b/Makefile
@@ -653,7 +653,7 @@ LIB_H += list-objects.h
LIB_H += ll-merge.h
LIB_H += log-tree.h
LIB_H += mailmap.h
-LIB_H += merge-file.h
+LIB_H += merge-blobs.h
LIB_H += merge-recursive.h
LIB_H += mergesort.h
LIB_H += notes-cache.h
@@ -769,7 +769,7 @@ LIB_OBJS += log-tree.o
LIB_OBJS += mailmap.o
LIB_OBJS += match-trees.o
LIB_OBJS += merge.o
-LIB_OBJS += merge-file.o
+LIB_OBJS += merge-blobs.o
LIB_OBJS += merge-recursive.o
LIB_OBJS += mergesort.o
LIB_OBJS += name-hash.o
diff --git a/builtin/merge-index.c b/builtin/merge-index.c
index 2338832587..be5e514324 100644
--- a/builtin/merge-index.c
+++ b/builtin/merge-index.c
@@ -42,7 +42,7 @@ static int merge_entry(int pos, const char *path)
return found;
}
-static void merge_file(const char *path)
+static void merge_one_path(const char *path)
{
int pos = cache_name_pos(path, strlen(path));
@@ -102,7 +102,7 @@ int cmd_merge_index(int argc, const char **argv, const char *prefix)
}
die("git merge-index: unknown option %s", arg);
}
- merge_file(arg);
+ merge_one_path(arg);
}
if (err && !quiet)
die("merge program failed");
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 897a563bc6..e0d0b7d28b 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -3,17 +3,15 @@
#include "xdiff-interface.h"
#include "blob.h"
#include "exec_cmd.h"
-#include "merge-file.h"
+#include "merge-blobs.h"
static const char merge_tree_usage[] = "git merge-tree <base-tree> <branch1> <branch2>";
-static int resolve_directories = 1;
struct merge_list {
struct merge_list *next;
struct merge_list *link; /* other stages for this object */
- unsigned int stage : 2,
- flags : 30;
+ unsigned int stage : 2;
unsigned int mode;
const char *path;
struct blob *blob;
@@ -27,7 +25,7 @@ static void add_merge_entry(struct merge_list *entry)
merge_result_end = &entry->next;
}
-static void merge_trees(struct tree_desc t[3], const char *base);
+static void merge_trees_recursive(struct tree_desc t[3], const char *base, int df_conflict);
static const char *explanation(struct merge_list *entry)
{
@@ -76,7 +74,7 @@ static void *result(struct merge_list *entry, unsigned long *size)
their = NULL;
if (entry)
their = entry->blob;
- return merge_file(path, base, our, their, size);
+ return merge_blobs(path, base, our, their, size);
}
static void *origin(struct merge_list *entry, unsigned long *size)
@@ -174,17 +172,17 @@ static char *traverse_path(const struct traverse_info *info, const struct name_e
return make_traverse_path(path, info, n);
}
-static void resolve(const struct traverse_info *info, struct name_entry *branch1, struct name_entry *result)
+static void resolve(const struct traverse_info *info, struct name_entry *ours, struct name_entry *result)
{
struct merge_list *orig, *final;
const char *path;
- /* If it's already branch1, don't bother showing it */
- if (!branch1)
+ /* If it's already ours, don't bother showing it */
+ if (!ours)
return;
path = traverse_path(info, result);
- orig = create_entry(2, branch1->mode, branch1->sha1, path);
+ orig = create_entry(2, ours->mode, ours->sha1, path);
final = create_entry(0, result->mode, result->sha1, path);
final->link = orig;
@@ -192,34 +190,35 @@ static void resolve(const struct traverse_info *info, struct name_entry *branch1
add_merge_entry(final);
}
-static int unresolved_directory(const struct traverse_info *info, struct name_entry n[3])
+static void unresolved_directory(const struct traverse_info *info, struct name_entry n[3],
+ int df_conflict)
{
char *newbase;
struct name_entry *p;
struct tree_desc t[3];
void *buf0, *buf1, *buf2;
- if (!resolve_directories)
- return 0;
- p = n;
- if (!p->mode) {
- p++;
- if (!p->mode)
- p++;
+ for (p = n; p < n + 3; p++) {
+ if (p->mode && S_ISDIR(p->mode))
+ break;
}
- if (!S_ISDIR(p->mode))
- return 0;
+ if (n + 3 <= p)
+ return; /* there is no tree here */
+
newbase = traverse_path(info, p);
- buf0 = fill_tree_descriptor(t+0, n[0].sha1);
- buf1 = fill_tree_descriptor(t+1, n[1].sha1);
- buf2 = fill_tree_descriptor(t+2, n[2].sha1);
- merge_trees(t, newbase);
+
+#define ENTRY_SHA1(e) (((e)->mode && S_ISDIR((e)->mode)) ? (e)->sha1 : NULL)
+ buf0 = fill_tree_descriptor(t+0, ENTRY_SHA1(n + 0));
+ buf1 = fill_tree_descriptor(t+1, ENTRY_SHA1(n + 1));
+ buf2 = fill_tree_descriptor(t+2, ENTRY_SHA1(n + 2));
+#undef ENTRY_SHA1
+
+ merge_trees_recursive(t, newbase, df_conflict);
free(buf0);
free(buf1);
free(buf2);
free(newbase);
- return 1;
}
@@ -242,18 +241,26 @@ static struct merge_list *link_entry(unsigned stage, const struct traverse_info
static void unresolved(const struct traverse_info *info, struct name_entry n[3])
{
struct merge_list *entry = NULL;
+ int i;
+ unsigned dirmask = 0, mask = 0;
+
+ for (i = 0; i < 3; i++) {
+ mask |= (1 << 1);
+ if (n[i].mode && S_ISDIR(n[i].mode))
+ dirmask |= (1 << i);
+ }
- if (unresolved_directory(info, n))
+ unresolved_directory(info, n, dirmask && (dirmask != mask));
+
+ if (dirmask == mask)
return;
- /*
- * Do them in reverse order so that the resulting link
- * list has the stages in order - link_entry adds new
- * links at the front.
- */
- entry = link_entry(3, info, n + 2, entry);
- entry = link_entry(2, info, n + 1, entry);
- entry = link_entry(1, info, n + 0, entry);
+ if (n[2].mode && !S_ISDIR(n[2].mode))
+ entry = link_entry(3, info, n + 2, entry);
+ if (n[1].mode && !S_ISDIR(n[1].mode))
+ entry = link_entry(2, info, n + 1, entry);
+ if (n[0].mode && !S_ISDIR(n[0].mode))
+ entry = link_entry(1, info, n + 0, entry);
add_merge_entry(entry);
}
@@ -292,20 +299,29 @@ static int threeway_callback(int n, unsigned long mask, unsigned long dirmask, s
/* Same in both? */
if (same_entry(entry+1, entry+2)) {
if (entry[0].sha1) {
+ /* Modified identically */
resolve(info, NULL, entry+1);
return mask;
}
+ /* "Both added the same" is left unresolved */
}
if (same_entry(entry+0, entry+1)) {
if (entry[2].sha1 && !S_ISDIR(entry[2].mode)) {
+ /* We did not touch, they modified -- take theirs */
resolve(info, entry+1, entry+2);
return mask;
}
+ /*
+ * If we did not touch a directory but they made it
+ * into a file, we fall through and unresolved()
+ * recurses down. Likewise for the opposite case.
+ */
}
if (same_entry(entry+0, entry+2)) {
if (entry[1].sha1 && !S_ISDIR(entry[1].mode)) {
+ /* We modified, they did not touch -- take ours */
resolve(info, NULL, entry+1);
return mask;
}
@@ -315,15 +331,21 @@ static int threeway_callback(int n, unsigned long mask, unsigned long dirmask, s
return mask;
}
-static void merge_trees(struct tree_desc t[3], const char *base)
+static void merge_trees_recursive(struct tree_desc t[3], const char *base, int df_conflict)
{
struct traverse_info info;
setup_traverse_info(&info, base);
+ info.data = &df_conflict;
info.fn = threeway_callback;
traverse_trees(3, t, &info);
}
+static void merge_trees(struct tree_desc t[3], const char *base)
+{
+ merge_trees_recursive(t, base, 0);
+}
+
static void *get_tree_descriptor(struct tree_desc *desc, const char *rev)
{
unsigned char sha1[20];
diff --git a/merge-file.c b/merge-blobs.c
index 7845528e88..57211bccb7 100644
--- a/merge-file.c
+++ b/merge-blobs.c
@@ -3,7 +3,7 @@
#include "xdiff-interface.h"
#include "ll-merge.h"
#include "blob.h"
-#include "merge-file.h"
+#include "merge-blobs.h"
static int fill_mmfile_blob(mmfile_t *f, struct blob *obj)
{
@@ -80,7 +80,7 @@ static int generate_common_file(mmfile_t *res, mmfile_t *f1, mmfile_t *f2)
return xdi_diff(f1, f2, &xpp, &xecfg, &ecb);
}
-void *merge_file(const char *path, struct blob *base, struct blob *our, struct blob *their, unsigned long *size)
+void *merge_blobs(const char *path, struct blob *base, struct blob *our, struct blob *their, unsigned long *size)
{
void *res = NULL;
mmfile_t f1, f2, common;
diff --git a/merge-blobs.h b/merge-blobs.h
new file mode 100644
index 0000000000..62b569e472
--- /dev/null
+++ b/merge-blobs.h
@@ -0,0 +1,8 @@
+#ifndef MERGE_BLOBS_H
+#define MERGE_BLOBS_H
+
+#include "blob.h"
+
+extern void *merge_blobs(const char *, struct blob *, struct blob *, struct blob *, unsigned long *);
+
+#endif /* MERGE_BLOBS_H */
diff --git a/merge-file.h b/merge-file.h
deleted file mode 100644
index 9b3b83ac6c..0000000000
--- a/merge-file.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef MERGE_FILE_H
-#define MERGE_FILE_H
-
-extern void *merge_file(const char *path, struct blob *base, struct blob *our,
- struct blob *their, unsigned long *size);
-
-#endif
diff --git a/merge-recursive.c b/merge-recursive.c
index d8820604ca..33ba5dc07c 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -976,7 +976,7 @@ merge_file_special_markers(struct merge_options *o,
return mfi;
}
-static struct merge_file_info merge_file(struct merge_options *o,
+static struct merge_file_info merge_file_one(struct merge_options *o,
const char *path,
const unsigned char *o_sha, int o_mode,
const unsigned char *a_sha, int a_mode,
@@ -1166,7 +1166,7 @@ static void conflict_rename_rename_1to2(struct merge_options *o,
struct merge_file_info mfi;
struct diff_filespec other;
struct diff_filespec *add;
- mfi = merge_file(o, one->path,
+ mfi = merge_file_one(o, one->path,
one->sha1, one->mode,
a->sha1, a->mode,
b->sha1, b->mode,
@@ -1450,7 +1450,7 @@ static int process_renames(struct merge_options *o,
ren1_dst, branch2);
if (o->call_depth) {
struct merge_file_info mfi;
- mfi = merge_file(o, ren1_dst, null_sha1, 0,
+ mfi = merge_file_one(o, ren1_dst, null_sha1, 0,
ren1->pair->two->sha1, ren1->pair->two->mode,
dst_other.sha1, dst_other.mode,
branch1, branch2);
diff --git a/t/t4300-merge-tree.sh b/t/t4300-merge-tree.sh
index 46c3fe76d3..d0b2a457b8 100755
--- a/t/t4300-merge-tree.sh
+++ b/t/t4300-merge-tree.sh
@@ -254,4 +254,48 @@ EXPECTED
test_cmp expected actual
'
+test_expect_success 'turn file to tree' '
+ git reset --hard initial &&
+ rm initial-file &&
+ mkdir initial-file &&
+ test_commit "turn-file-to-tree" "initial-file/ONE" "CCC" &&
+ git merge-tree initial initial turn-file-to-tree >actual &&
+ cat >expect <<-\EOF &&
+ added in remote
+ their 100644 43aa4fdec31eb92e1fdc2f0ce6ea9ddb7c32bcf7 initial-file/ONE
+ @@ -0,0 +1 @@
+ +CCC
+ removed in remote
+ base 100644 e79c5e8f964493290a409888d5413a737e8e5dd5 initial-file
+ our 100644 e79c5e8f964493290a409888d5413a737e8e5dd5 initial-file
+ @@ -1 +0,0 @@
+ -initial
+ EOF
+ test_cmp expect actual
+'
+
+test_expect_success 'turn tree to file' '
+ git reset --hard initial &&
+ mkdir dir &&
+ test_commit "add-tree" "dir/path" "AAA" &&
+ test_commit "add-another-tree" "dir/another" "BBB" &&
+ rm -fr dir &&
+ test_commit "make-file" "dir" "CCC" &&
+ git merge-tree add-tree add-another-tree make-file >actual &&
+ cat >expect <<-\EOF &&
+ added in local
+ our 100644 ba629238ca89489f2b350e196ca445e09d8bb834 dir/another
+ removed in remote
+ base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d dir/path
+ our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d dir/path
+ @@ -1 +0,0 @@
+ -AAA
+ added in remote
+ their 100644 43aa4fdec31eb92e1fdc2f0ce6ea9ddb7c32bcf7 dir
+ @@ -0,0 +1 @@
+ +CCC
+ EOF
+ test_cmp expect actual
+'
+
test_done