#include "cache.h"
#include "commit.h"
#include "tree.h"
+#include "tree-walk.h"
#include "tag.h"
#include "blob.h"
#include "refs.h"
const char *write_ref = NULL;
-
-const unsigned char *current_ref = NULL;
+const char *write_ref_log_details = NULL;
int get_tree = 0;
int get_history = 0;
int get_all = 0;
int get_verbosely = 0;
+int get_recover = 0;
static unsigned char current_commit_sha1[20];
void pull_say(const char *fmt, const char *hex)
what, missing_hex, sha1_to_hex(current_commit_sha1));
}
-static int make_sure_we_have_it(const char *what, unsigned char *sha1)
-{
- int status = 0;
-
- if (!has_sha1_file(sha1)) {
- status = fetch(sha1);
- if (status && what)
- report_missing(what, sha1);
- }
- return status;
-}
-
-static int process(unsigned char *sha1, const char *type);
+static int process(struct object *obj);
static int process_tree(struct tree *tree)
{
- struct tree_entry_list *entries;
+ struct tree_desc desc;
+ struct name_entry entry;
if (parse_tree(tree))
return -1;
- for (entries = tree->entries; entries; entries = entries->next) {
- if (process(entries->item.any->sha1,
- entries->directory ? tree_type : blob_type))
+ desc.buf = tree->buffer;
+ desc.size = tree->size;
+ while (tree_entry(&desc, &entry)) {
+ struct object *obj = NULL;
+
+ if (S_ISDIR(entry.mode)) {
+ struct tree *tree = lookup_tree(entry.sha1);
+ if (tree)
+ obj = &tree->object;
+ }
+ else {
+ struct blob *blob = lookup_blob(entry.sha1);
+ if (blob)
+ obj = &blob->object;
+ }
+ if (!obj || process(obj))
return -1;
}
+ free(tree->buffer);
+ tree->buffer = NULL;
+ tree->size = 0;
return 0;
}
-#define COMPLETE 1U
+#define COMPLETE (1U << 0)
+#define SEEN (1U << 1)
+#define TO_SCAN (1U << 2)
+
static struct commit_list *complete = NULL;
static int process_commit(struct commit *commit)
while (complete && complete->item->date >= commit->date) {
pop_most_recent_commit(&complete, COMPLETE);
}
-
if (commit->object.flags & COMPLETE)
return 0;
memcpy(current_commit_sha1, commit->object.sha1, 20);
+ pull_say("walk %s\n", sha1_to_hex(commit->object.sha1));
+
if (get_tree) {
- if (process(commit->tree->object.sha1, tree_type))
+ if (process(&commit->tree->object))
return -1;
if (!get_all)
get_tree = 0;
if (get_history) {
struct commit_list *parents = commit->parents;
for (; parents; parents = parents->next) {
- if (process(parents->item->object.sha1,
- commit_type))
+ if (process(&parents->item->object))
return -1;
}
}
{
if (parse_tag(tag))
return -1;
- return process(tag->tagged->sha1, NULL);
+ return process(tag->tagged);
}
static struct object_list *process_queue = NULL;
obj->type, sha1_to_hex(obj->sha1));
}
-static int process(unsigned char *sha1, const char *type)
+static int process(struct object *obj)
{
- struct object *obj = lookup_object_type(sha1, type);
+ if (obj->flags & SEEN)
+ return 0;
+ obj->flags |= SEEN;
- if (has_sha1_file(sha1)) {
- parse_object(sha1);
+ if (has_sha1_file(obj->sha1)) {
/* We already have it, so we should scan it now. */
- return process_object(obj);
+ obj->flags |= TO_SCAN;
}
- if (object_list_contains(process_queue, obj))
- return 0;
+ else {
+ if (obj->flags & COMPLETE)
+ return 0;
+ prefetch(obj->sha1);
+ }
+
object_list_insert(obj, process_queue_end);
process_queue_end = &(*process_queue_end)->next;
-
- //fprintf(stderr, "prefetch %s\n", sha1_to_hex(sha1));
- prefetch(sha1);
-
return 0;
}
static int loop(void)
{
+ struct object_list *elem;
+
while (process_queue) {
struct object *obj = process_queue->item;
- /*
- fprintf(stderr, "%d objects to pull\n",
- object_list_length(process_queue));
- */
- process_queue = process_queue->next;
+ elem = process_queue;
+ process_queue = elem->next;
+ free(elem);
if (!process_queue)
process_queue_end = &process_queue;
- //fprintf(stderr, "fetch %s\n", sha1_to_hex(obj->sha1));
-
- if (make_sure_we_have_it(obj->type ? obj->type : "object",
- obj->sha1))
- return -1;
+ /* If we are not scanning this object, we placed it in
+ * the queue because we needed to fetch it first.
+ */
+ if (! (obj->flags & TO_SCAN)) {
+ if (fetch(obj->sha1)) {
+ report_missing(obj->type
+ ? obj->type
+ : "object", obj->sha1);
+ return -1;
+ }
+ }
if (!obj->type)
parse_object(obj->sha1);
if (process_object(obj))
int pull(char *target)
{
+ struct ref_lock *lock = NULL;
unsigned char sha1[20];
- int fd = -1;
+ char *msg;
+ int ret;
save_commit_buffer = 0;
- if (write_ref && current_ref) {
- fd = lock_ref_sha1(write_ref, current_ref);
- if (fd < 0)
+ track_object_refs = 0;
+ if (write_ref) {
+ lock = lock_ref_sha1(write_ref, NULL, 0);
+ if (!lock) {
+ error("Can't lock ref %s", write_ref);
return -1;
+ }
}
- for_each_ref(mark_complete);
+ if (!get_recover)
+ for_each_ref(mark_complete);
- if (interpret_target(target, sha1))
- return error("Could not interpret %s as something to pull",
- target);
- if (process(sha1, NULL))
+ if (interpret_target(target, sha1)) {
+ error("Could not interpret %s as something to pull", target);
+ if (lock)
+ unlock_ref(lock);
return -1;
- if (loop())
+ }
+ if (process(lookup_unknown_object(sha1))) {
+ if (lock)
+ unlock_ref(lock);
return -1;
-
+ }
+ if (loop()) {
+ if (lock)
+ unlock_ref(lock);
+ return -1;
+ }
+
if (write_ref) {
- if (current_ref) {
- write_ref_sha1(write_ref, fd, sha1);
- } else {
- write_ref_sha1_unlocked(write_ref, sha1);
+ if (write_ref_log_details) {
+ msg = xmalloc(strlen(write_ref_log_details) + 12);
+ sprintf(msg, "fetch from %s", write_ref_log_details);
}
+ else
+ msg = NULL;
+ ret = write_ref_sha1(lock, sha1, msg ? msg : "fetch (unknown)");
+ if (msg)
+ free(msg);
+ return ret;
}
return 0;
}
projects / git.git / blobdiff