static int aggressive = 0;
static int verbose_update = 0;
static volatile int progress_update = 0;
+static const char *prefix = NULL;
static int head_idx = -1;
static int merge_size = 0;
static struct object_list *trees = NULL;
-static struct cache_entry df_conflict_entry = {
-};
+static struct cache_entry df_conflict_entry;
struct tree_entry_list {
struct tree_entry_list *next;
static struct tree_entry_list *create_tree_entry_list(struct tree *tree)
{
struct tree_desc desc;
+ struct name_entry one;
struct tree_entry_list *ret = NULL;
struct tree_entry_list **list_p = &ret;
desc.buf = tree->buffer;
desc.size = tree->size;
- while (desc.size) {
- unsigned mode;
- const char *path;
- const unsigned char *sha1;
+ while (tree_entry(&desc, &one)) {
struct tree_entry_list *entry;
- sha1 = tree_entry_extract(&desc, &path, &mode);
- update_tree_entry(&desc);
-
entry = xmalloc(sizeof(struct tree_entry_list));
- entry->name = path;
- entry->sha1 = sha1;
- entry->mode = mode;
- entry->directory = S_ISDIR(mode) != 0;
- entry->executable = (mode & S_IXUSR) != 0;
- entry->symlink = S_ISLNK(mode) != 0;
+ entry->name = one.path;
+ entry->sha1 = one.sha1;
+ entry->mode = one.mode;
+ entry->directory = S_ISDIR(one.mode) != 0;
+ entry->executable = (one.mode & S_IXUSR) != 0;
+ entry->symlink = S_ISLNK(one.mode) != 0;
entry->next = NULL;
*list_p = entry;
fprintf(stderr, "%4u%% (%u/%u) done\r",
percent, cnt, total);
last_percent = percent;
+ progress_update = 0;
}
}
}
posns[i] = create_tree_entry_list((struct tree *) posn->item);
posn = posn->next;
}
- if (unpack_trees_rec(posns, len, "", fn, &indpos))
+ if (unpack_trees_rec(posns, len, prefix ? prefix : "",
+ fn, &indpos))
return -1;
}
return deleted_entry(oldtree, current);
}
+/*
+ * Bind merge.
+ *
+ * Keep the index entries at stage0, collapse stage1 but make sure
+ * stage0 does not have anything there.
+ */
+static int bind_merge(struct cache_entry **src)
+{
+ struct cache_entry *old = src[0];
+ struct cache_entry *a = src[1];
+
+ if (merge_size != 1)
+ return error("Cannot do a bind merge of %d trees\n",
+ merge_size);
+ if (a && old)
+ die("Entry '%s' overlaps. Cannot bind.", a->name);
+ if (!a)
+ return keep_entry(old);
+ else
+ return merged_entry(a, NULL);
+}
+
/*
* One-way merge.
*
static int read_cache_unmerged(void)
{
- int i, deleted;
+ int i;
struct cache_entry **dst;
+ struct cache_entry *last = NULL;
read_cache();
dst = active_cache;
- deleted = 0;
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce)) {
- deleted++;
+ if (last && !strcmp(ce->name, last->name))
+ continue;
invalidate_ce_path(ce);
- continue;
+ last = ce;
+ ce->ce_mode = 0;
+ ce->ce_flags &= ~htons(CE_STAGEMASK);
}
- if (deleted)
- *dst = ce;
- dst++;
+ *dst++ = ce;
}
- active_nr -= deleted;
- return deleted;
+ active_nr = dst - active_cache;
+ return !!last;
}
static void prime_cache_tree_rec(struct cache_tree *it, struct tree *tree)
{
struct tree_desc desc;
+ struct name_entry entry;
int cnt;
memcpy(it->sha1, tree->object.sha1, 20);
desc.buf = tree->buffer;
desc.size = tree->size;
cnt = 0;
- while (desc.size) {
- unsigned mode;
- const char *name;
- const unsigned char *sha1;
-
- sha1 = tree_entry_extract(&desc, &name, &mode);
- update_tree_entry(&desc);
- if (!S_ISDIR(mode))
+ while (tree_entry(&desc, &entry)) {
+ if (!S_ISDIR(entry.mode))
cnt++;
else {
struct cache_tree_sub *sub;
- struct tree *subtree = lookup_tree(sha1);
+ struct tree *subtree = lookup_tree(entry.sha1);
if (!subtree->object.parsed)
parse_tree(subtree);
- sub = cache_tree_sub(it, name);
+ sub = cache_tree_sub(it, entry.path);
sub->cache_tree = cache_tree();
prime_cache_tree_rec(sub->cache_tree, subtree);
cnt += sub->cache_tree->entry_count;
}
-static const char read_tree_usage[] = "git-read-tree (<sha> | -m [--aggressive] [-u | -i] <sha1> [<sha2> [<sha3>]])";
+static const char read_tree_usage[] = "git-read-tree (<sha> | [[-m [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] <sha1> [<sha2> [<sha3>]])";
-static struct cache_file cache_file;
+static struct lock_file lock_file;
int cmd_read_tree(int argc, const char **argv, char **envp)
{
setup_git_directory();
git_config(git_default_config);
- newfd = hold_index_file_for_update(&cache_file, get_index_file());
+ newfd = hold_lock_file_for_update(&lock_file, get_index_file());
if (newfd < 0)
- die("unable to create new cachefile");
+ die("unable to create new index file");
git_config(git_default_config);
continue;
}
- /* This differs from "-m" in that we'll silently ignore unmerged entries */
+ /* "--prefix=<subdirectory>/" means keep the current index
+ * entries and put the entries from the tree under the
+ * given subdirectory.
+ */
+ if (!strncmp(arg, "--prefix=", 9)) {
+ if (stage || merge || prefix)
+ usage(read_tree_usage);
+ prefix = arg + 9;
+ merge = 1;
+ stage = 1;
+ if (read_cache_unmerged())
+ die("you need to resolve your current index first");
+ continue;
+ }
+
+ /* This differs from "-m" in that we'll silently ignore
+ * unmerged entries and overwrite working tree files that
+ * correspond to them.
+ */
if (!strcmp(arg, "--reset")) {
- if (stage || merge)
+ if (stage || merge || prefix)
usage(read_tree_usage);
reset = 1;
merge = 1;
/* "-m" stands for "merge", meaning we start in stage 1 */
if (!strcmp(arg, "-m")) {
- if (stage || merge)
+ if (stage || merge || prefix)
usage(read_tree_usage);
if (read_cache_unmerged())
die("you need to resolve your current index first");
if ((update||index_only) && !merge)
usage(read_tree_usage);
+ if (prefix) {
+ int pfxlen = strlen(prefix);
+ int pos;
+ if (prefix[pfxlen-1] != '/')
+ die("prefix must end with /");
+ if (stage != 2)
+ die("binding merge takes only one tree");
+ pos = cache_name_pos(prefix, pfxlen);
+ if (0 <= pos)
+ die("corrupt index file");
+ pos = -pos-1;
+ if (pos < active_nr &&
+ !strncmp(active_cache[pos]->name, prefix, pfxlen))
+ die("subdirectory '%s' already exists.", prefix);
+ pos = cache_name_pos(prefix, pfxlen-1);
+ if (0 <= pos)
+ die("file '%.*s' already exists.", pfxlen-1, prefix);
+ }
+
if (merge) {
if (stage < 2)
die("just how do you expect me to merge %d trees?", stage-1);
switch (stage - 1) {
case 1:
- fn = oneway_merge;
+ fn = prefix ? bind_merge : oneway_merge;
break;
case 2:
fn = twoway_merge;
* valid cache-tree because the index must match exactly
* what came from the tree.
*/
- if (trees && trees->item && (!merge || (stage == 2))) {
+ if (trees && trees->item && !prefix && (!merge || (stage == 2))) {
cache_tree_free(&active_cache_tree);
prime_cache_tree();
}
if (write_cache(newfd, active_cache, active_nr) ||
- commit_index_file(&cache_file))
+ commit_lock_file(&lock_file))
die("unable to write new index file");
return 0;
}