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-rw-r--r--cache-tree.c144
1 files changed, 111 insertions, 33 deletions
diff --git a/cache-tree.c b/cache-tree.c
index 37bf35e636..37e4d008b5 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -22,8 +22,10 @@ void cache_tree_free(struct cache_tree **it_p)
if (!it)
return;
for (i = 0; i < it->subtree_nr; i++)
- if (it->down[i])
+ if (it->down[i]) {
cache_tree_free(&it->down[i]->cache_tree);
+ free(it->down[i]);
+ }
free(it->down);
free(it);
*it_p = NULL;
@@ -148,25 +150,24 @@ void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
}
static int verify_cache(struct cache_entry **cache,
- int entries)
+ int entries, int flags)
{
int i, funny;
+ int silent = flags & WRITE_TREE_SILENT;
/* Verify that the tree is merged */
funny = 0;
for (i = 0; i < entries; i++) {
struct cache_entry *ce = cache[i];
- if (ce_stage(ce) || (ce->ce_flags & CE_INTENT_TO_ADD)) {
+ if (ce_stage(ce)) {
+ if (silent)
+ return -1;
if (10 < ++funny) {
fprintf(stderr, "...\n");
break;
}
- if (ce_stage(ce))
- fprintf(stderr, "%s: unmerged (%s)\n",
- ce->name, sha1_to_hex(ce->sha1));
- else
- fprintf(stderr, "%s: not added yet\n",
- ce->name);
+ fprintf(stderr, "%s: unmerged (%s)\n",
+ ce->name, sha1_to_hex(ce->sha1));
}
}
if (funny)
@@ -237,12 +238,17 @@ static int update_one(struct cache_tree *it,
int entries,
const char *base,
int baselen,
- int missing_ok,
- int dryrun)
+ int *skip_count,
+ int flags)
{
struct strbuf buffer;
+ int missing_ok = flags & WRITE_TREE_MISSING_OK;
+ int dryrun = flags & WRITE_TREE_DRY_RUN;
+ int to_invalidate = 0;
int i;
+ *skip_count = 0;
+
if (0 <= it->entry_count && has_sha1_file(it->sha1))
return it->entry_count;
@@ -257,11 +263,12 @@ static int update_one(struct cache_tree *it,
/*
* Find the subtrees and update them.
*/
- for (i = 0; i < entries; i++) {
+ i = 0;
+ while (i < entries) {
struct cache_entry *ce = cache[i];
struct cache_tree_sub *sub;
const char *path, *slash;
- int pathlen, sublen, subcnt;
+ int pathlen, sublen, subcnt, subskip;
path = ce->name;
pathlen = ce_namelen(ce);
@@ -269,8 +276,10 @@ static int update_one(struct cache_tree *it,
break; /* at the end of this level */
slash = strchr(path + baselen, '/');
- if (!slash)
+ if (!slash) {
+ i++;
continue;
+ }
/*
* a/bbb/c (base = a/, slash = /c)
* ==>
@@ -284,11 +293,13 @@ static int update_one(struct cache_tree *it,
cache + i, entries - i,
path,
baselen + sublen + 1,
- missing_ok,
- dryrun);
+ &subskip,
+ flags);
if (subcnt < 0)
return subcnt;
- i += subcnt - 1;
+ i += subcnt;
+ sub->count = subcnt; /* to be used in the next loop */
+ *skip_count += subskip;
sub->used = 1;
}
@@ -299,7 +310,8 @@ static int update_one(struct cache_tree *it,
*/
strbuf_init(&buffer, 8192);
- for (i = 0; i < entries; i++) {
+ i = 0;
+ while (i < entries) {
struct cache_entry *ce = cache[i];
struct cache_tree_sub *sub;
const char *path, *slash;
@@ -319,20 +331,43 @@ static int update_one(struct cache_tree *it,
if (!sub)
die("cache-tree.c: '%.*s' in '%s' not found",
entlen, path + baselen, path);
- i += sub->cache_tree->entry_count - 1;
+ i += sub->count;
sha1 = sub->cache_tree->sha1;
mode = S_IFDIR;
+ if (sub->cache_tree->entry_count < 0)
+ to_invalidate = 1;
}
else {
sha1 = ce->sha1;
mode = ce->ce_mode;
entlen = pathlen - baselen;
+ i++;
+ }
+ if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1)) {
+ strbuf_release(&buffer);
+ return error("invalid object %06o %s for '%.*s'",
+ mode, sha1_to_hex(sha1), entlen+baselen, path);
}
- if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1))
- return error("invalid object %s", sha1_to_hex(sha1));
- if (ce->ce_flags & CE_REMOVE)
- continue; /* entry being removed */
+ /*
+ * CE_REMOVE entries are removed before the index is
+ * written to disk. Skip them to remain consistent
+ * with the future on-disk index.
+ */
+ if (ce->ce_flags & CE_REMOVE) {
+ *skip_count = *skip_count + 1;
+ continue;
+ }
+
+ /*
+ * CE_INTENT_TO_ADD entries exist on on-disk index but
+ * they are not part of generated trees. Invalidate up
+ * to root to force cache-tree users to read elsewhere.
+ */
+ if (ce->ce_flags & CE_INTENT_TO_ADD) {
+ to_invalidate = 1;
+ continue;
+ }
strbuf_grow(&buffer, entlen + 100);
strbuf_addf(&buffer, "%o %.*s%c", mode, entlen, path + baselen, '\0');
@@ -352,7 +387,7 @@ static int update_one(struct cache_tree *it,
}
strbuf_release(&buffer);
- it->entry_count = i;
+ it->entry_count = to_invalidate ? -1 : i - *skip_count;
#if DEBUG
fprintf(stderr, "cache-tree update-one (%d ent, %d subtree) %s\n",
it->entry_count, it->subtree_nr,
@@ -364,14 +399,13 @@ static int update_one(struct cache_tree *it,
int cache_tree_update(struct cache_tree *it,
struct cache_entry **cache,
int entries,
- int missing_ok,
- int dryrun)
+ int flags)
{
- int i;
- i = verify_cache(cache, entries);
+ int i, skip;
+ i = verify_cache(cache, entries, flags);
if (i)
return i;
- i = update_one(it, cache, entries, "", 0, missing_ok, dryrun);
+ i = update_one(it, cache, entries, "", 0, &skip, flags);
if (i < 0)
return i;
return 0;
@@ -514,6 +548,8 @@ struct cache_tree *cache_tree_read(const char *buffer, unsigned long size)
static struct cache_tree *cache_tree_find(struct cache_tree *it, const char *path)
{
+ if (!it)
+ return NULL;
while (*path) {
const char *slash;
struct cache_tree_sub *sub;
@@ -538,31 +574,33 @@ static struct cache_tree *cache_tree_find(struct cache_tree *it, const char *pat
return it;
}
-int write_cache_as_tree(unsigned char *sha1, int missing_ok, const char *prefix)
+int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
{
int entries, was_valid, newfd;
+ struct lock_file *lock_file;
/*
* We can't free this memory, it becomes part of a linked list
* parsed atexit()
*/
- struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+ lock_file = xcalloc(1, sizeof(struct lock_file));
newfd = hold_locked_index(lock_file, 1);
entries = read_cache();
if (entries < 0)
return WRITE_TREE_UNREADABLE_INDEX;
+ if (flags & WRITE_TREE_IGNORE_CACHE_TREE)
+ cache_tree_free(&(active_cache_tree));
if (!active_cache_tree)
active_cache_tree = cache_tree();
was_valid = cache_tree_fully_valid(active_cache_tree);
-
if (!was_valid) {
if (cache_tree_update(active_cache_tree,
active_cache, active_nr,
- missing_ok, 0) < 0)
+ flags) < 0)
return WRITE_TREE_UNMERGED_INDEX;
if (0 <= newfd) {
if (!write_cache(newfd, active_cache, active_nr) &&
@@ -625,3 +663,43 @@ void prime_cache_tree(struct cache_tree **it, struct tree *tree)
*it = cache_tree();
prime_cache_tree_rec(*it, tree);
}
+
+/*
+ * find the cache_tree that corresponds to the current level without
+ * exploding the full path into textual form. The root of the
+ * cache tree is given as "root", and our current level is "info".
+ * (1) When at root level, info->prev is NULL, so it is "root" itself.
+ * (2) Otherwise, find the cache_tree that corresponds to one level
+ * above us, and find ourselves in there.
+ */
+static struct cache_tree *find_cache_tree_from_traversal(struct cache_tree *root,
+ struct traverse_info *info)
+{
+ struct cache_tree *our_parent;
+
+ if (!info->prev)
+ return root;
+ our_parent = find_cache_tree_from_traversal(root, info->prev);
+ return cache_tree_find(our_parent, info->name.path);
+}
+
+int cache_tree_matches_traversal(struct cache_tree *root,
+ struct name_entry *ent,
+ struct traverse_info *info)
+{
+ struct cache_tree *it;
+
+ it = find_cache_tree_from_traversal(root, info);
+ it = cache_tree_find(it, ent->path);
+ if (it && it->entry_count > 0 && !hashcmp(ent->sha1, it->sha1))
+ return it->entry_count;
+ return 0;
+}
+
+int update_main_cache_tree(int flags)
+{
+ if (!the_index.cache_tree)
+ the_index.cache_tree = cache_tree();
+ return cache_tree_update(the_index.cache_tree,
+ the_index.cache, the_index.cache_nr, flags);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 04:47:31 +0000