#include "cache.h"
#include "tree.h"
#include "tree-walk.h"
+#include "object-store.h"
-static int score_missing(unsigned mode, const char *path)
+static int score_missing(unsigned mode)
{
int score;
return score;
}
-static int score_differs(unsigned mode1, unsigned mode2, const char *path)
+static int score_differs(unsigned mode1, unsigned mode2)
{
int score;
return score;
}
-static int score_matches(unsigned mode1, unsigned mode2, const char *path)
+static int score_matches(unsigned mode1, unsigned mode2)
{
int score;
enum object_type type;
unsigned long size;
- buffer = read_sha1_file(hash->hash, &type, &size);
+ buffer = read_object_file(hash, &type, &size);
if (!buffer)
die("unable to read tree (%s)", oid_to_hex(hash));
if (type != OBJ_TREE)
int score = 0;
for (;;) {
- struct name_entry e1, e2;
- int got_entry_from_one = tree_entry(&one, &e1);
- int got_entry_from_two = tree_entry(&two, &e2);
int cmp;
- if (got_entry_from_one && got_entry_from_two)
- cmp = base_name_entries_compare(&e1, &e2);
- else if (got_entry_from_one)
+ if (one.size && two.size)
+ cmp = base_name_entries_compare(&one.entry, &two.entry);
+ else if (one.size)
/* two lacks this entry */
cmp = -1;
- else if (got_entry_from_two)
+ else if (two.size)
/* two has more entries */
cmp = 1;
else
break;
- if (cmp < 0)
+ if (cmp < 0) {
/* path1 does not appear in two */
- score += score_missing(e1.mode, e1.path);
- else if (cmp > 0)
+ score += score_missing(one.entry.mode);
+ update_tree_entry(&one);
+ } else if (cmp > 0) {
/* path2 does not appear in one */
- score += score_missing(e2.mode, e2.path);
- else if (oidcmp(e1.oid, e2.oid))
- /* they are different */
- score += score_differs(e1.mode, e2.mode, e1.path);
- else
- /* same subtree or blob */
- score += score_matches(e1.mode, e2.mode, e1.path);
+ score += score_missing(two.entry.mode);
+ update_tree_entry(&two);
+ } else {
+ /* path appears in both */
+ if (!oideq(&one.entry.oid, &two.entry.oid)) {
+ /* they are different */
+ score += score_differs(one.entry.mode,
+ two.entry.mode);
+ } else {
+ /* same subtree or blob */
+ score += score_matches(one.entry.mode,
+ two.entry.mode);
+ }
+ update_tree_entry(&one);
+ update_tree_entry(&two);
+ }
}
free(one_buf);
free(two_buf);
while (one.size) {
const char *path;
const struct object_id *elem;
- unsigned mode;
+ unsigned short mode;
int score;
elem = tree_entry_extract(&one, &path, &mode);
}
/*
- * A tree "hash1" has a subdirectory at "prefix". Come up with a
- * tree object by replacing it with another tree "hash2".
+ * A tree "oid1" has a subdirectory at "prefix". Come up with a tree object by
+ * replacing it with another tree "oid2".
*/
-static int splice_tree(const unsigned char *hash1,
- const char *prefix,
- const unsigned char *hash2,
- unsigned char *result)
+static int splice_tree(const struct object_id *oid1, const char *prefix,
+ const struct object_id *oid2, struct object_id *result)
{
char *subpath;
int toplen;
unsigned long sz;
struct tree_desc desc;
unsigned char *rewrite_here;
- const unsigned char *rewrite_with;
- unsigned char subtree[20];
+ const struct object_id *rewrite_with;
+ struct object_id subtree;
enum object_type type;
int status;
if (*subpath)
subpath++;
- buf = read_sha1_file(hash1, &type, &sz);
+ buf = read_object_file(oid1, &type, &sz);
if (!buf)
- die("cannot read tree %s", sha1_to_hex(hash1));
+ die("cannot read tree %s", oid_to_hex(oid1));
init_tree_desc(&desc, buf, sz);
rewrite_here = NULL;
while (desc.size) {
const char *name;
- unsigned mode;
- const struct object_id *oid;
+ unsigned short mode;
- oid = tree_entry_extract(&desc, &name, &mode);
+ tree_entry_extract(&desc, &name, &mode);
if (strlen(name) == toplen &&
!memcmp(name, prefix, toplen)) {
if (!S_ISDIR(mode))
- die("entry %s in tree %s is not a tree",
- name, sha1_to_hex(hash1));
- rewrite_here = (unsigned char *) oid->hash;
+ die("entry %s in tree %s is not a tree", name,
+ oid_to_hex(oid1));
+
+ /*
+ * We cast here for two reasons:
+ *
+ * - to flip the "char *" (for the path) to "unsigned
+ * char *" (for the hash stored after it)
+ *
+ * - to discard the "const"; this is OK because we
+ * know it points into our non-const "buf"
+ */
+ rewrite_here = (unsigned char *)(desc.entry.path +
+ strlen(desc.entry.path) +
+ 1);
break;
}
update_tree_entry(&desc);
}
if (!rewrite_here)
- die("entry %.*s not found in tree %s",
- toplen, prefix, sha1_to_hex(hash1));
+ die("entry %.*s not found in tree %s", toplen, prefix,
+ oid_to_hex(oid1));
if (*subpath) {
- status = splice_tree(rewrite_here, subpath, hash2, subtree);
+ struct object_id tree_oid;
+ hashcpy(tree_oid.hash, rewrite_here);
+ status = splice_tree(&tree_oid, subpath, oid2, &subtree);
if (status)
return status;
- rewrite_with = subtree;
+ rewrite_with = &subtree;
+ } else {
+ rewrite_with = oid2;
}
- else
- rewrite_with = hash2;
- hashcpy(rewrite_here, rewrite_with);
- status = write_sha1_file(buf, sz, tree_type, result);
+ hashcpy(rewrite_here, rewrite_with->hash);
+ status = write_object_file(buf, sz, tree_type, result);
free(buf);
return status;
}
* other hand, it could cover tree one and we might need to pick a
* subtree of it.
*/
-void shift_tree(const struct object_id *hash1,
+void shift_tree(struct repository *r,
+ const struct object_id *hash1,
const struct object_id *hash2,
struct object_id *shifted,
int depth_limit)
if (add_score < del_score) {
/* We need to pick a subtree of two */
- unsigned mode;
+ unsigned short mode;
if (!*del_prefix)
return;
- if (get_tree_entry(hash2->hash, del_prefix, shifted->hash, &mode))
+ if (get_tree_entry(r, hash2, del_prefix, shifted, &mode))
die("cannot find path %s in tree %s",
del_prefix, oid_to_hex(hash2));
return;
if (!*add_prefix)
return;
- splice_tree(hash1->hash, add_prefix, hash2->hash, shifted->hash);
+ splice_tree(hash1, add_prefix, hash2, shifted);
}
/*
* Unfortunately we cannot fundamentally tell which one to
* be prefixed, as recursive merge can work in either direction.
*/
-void shift_tree_by(const struct object_id *hash1,
+void shift_tree_by(struct repository *r,
+ const struct object_id *hash1,
const struct object_id *hash2,
struct object_id *shifted,
const char *shift_prefix)
{
struct object_id sub1, sub2;
- unsigned mode1, mode2;
+ unsigned short mode1, mode2;
unsigned candidate = 0;
/* Can hash2 be a tree at shift_prefix in tree hash1? */
- if (!get_tree_entry(hash1->hash, shift_prefix, sub1.hash, &mode1) &&
+ if (!get_tree_entry(r, hash1, shift_prefix, &sub1, &mode1) &&
S_ISDIR(mode1))
candidate |= 1;
/* Can hash1 be a tree at shift_prefix in tree hash2? */
- if (!get_tree_entry(hash2->hash, shift_prefix, sub2.hash, &mode2) &&
+ if (!get_tree_entry(r, hash2, shift_prefix, &sub2, &mode2) &&
S_ISDIR(mode2))
candidate |= 2;
* shift tree2 down by adding shift_prefix above it
* to match tree1.
*/
- splice_tree(hash1->hash, shift_prefix, hash2->hash, shifted->hash);
+ splice_tree(hash1, shift_prefix, hash2, shifted);
else
/*
* shift tree2 up by removing shift_prefix from it
projects / platform / upstream / git.git / blobdiff