#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;
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)
{
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)
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;
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;
}
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);
}
/* 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;
}
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];