diff options
Diffstat (limited to 'fetch.c')
| -rw-r--r-- | fetch.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/fetch.c b/fetch.c deleted file mode 100644 index 73bde07aea..0000000000 --- a/fetch.c +++ /dev/null @@ -1,238 +0,0 @@ -#include "fetch.h" - -#include "cache.h" -#include "commit.h" -#include "tree.h" -#include "tag.h" -#include "blob.h" -#include "refs.h" - -const char *write_ref = NULL; - -const unsigned char *current_ref = 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) -{ - if (get_verbosely) - fprintf(stderr, fmt, hex); -} - -static void report_missing(const char *what, const unsigned char *missing) -{ - char missing_hex[41]; - - strcpy(missing_hex, sha1_to_hex(missing));; - fprintf(stderr, - "Cannot obtain needed %s %s\nwhile processing commit %s.\n", - what, missing_hex, sha1_to_hex(current_commit_sha1)); -} - -static int process(struct object *obj); - -static int process_tree(struct tree *tree) -{ - struct tree_entry_list *entry; - - if (parse_tree(tree)) - return -1; - - entry = tree->entries; - tree->entries = NULL; - while (entry) { - struct tree_entry_list *next = entry->next; - if (process(entry->item.any)) - return -1; - free(entry->name); - free(entry); - entry = next; - } - return 0; -} - -#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) -{ - if (parse_commit(commit)) - return -1; - - 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)) - 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)) - return -1; - } - } - return 0; -} - -static int process_tag(struct tag *tag) -{ - if (parse_tag(tag)) - return -1; - return process(tag->tagged); -} - -static struct object_list *process_queue = NULL; -static struct object_list **process_queue_end = &process_queue; - -static int process_object(struct object *obj) -{ - if (obj->type == commit_type) { - if (process_commit((struct commit *)obj)) - return -1; - return 0; - } - if (obj->type == tree_type) { - if (process_tree((struct tree *)obj)) - return -1; - return 0; - } - if (obj->type == blob_type) { - return 0; - } - if (obj->type == tag_type) { - if (process_tag((struct tag *)obj)) - return -1; - return 0; - } - return error("Unable to determine requirements " - "of type %s for %s", - obj->type, sha1_to_hex(obj->sha1)); -} - -static int process(struct object *obj) -{ - if (obj->flags & SEEN) - return 0; - obj->flags |= SEEN; - - if (has_sha1_file(obj->sha1)) { - /* We already have it, so we should scan it now. */ - obj->flags |= TO_SCAN; - } else { - if (obj->flags & COMPLETE) - return 0; - prefetch(obj->sha1); - } - - object_list_insert(obj, process_queue_end); - process_queue_end = &(*process_queue_end)->next; - return 0; -} - -static int loop(void) -{ - struct object_list *elem; - - while (process_queue) { - struct object *obj = process_queue->item; - elem = process_queue; - process_queue = elem->next; - free(elem); - if (!process_queue) - process_queue_end = &process_queue; - - /* 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)) - return -1; - } - return 0; -} - -static int interpret_target(char *target, unsigned char *sha1) -{ - if (!get_sha1_hex(target, sha1)) - return 0; - if (!check_ref_format(target)) { - if (!fetch_ref(target, sha1)) { - return 0; - } - } - return -1; -} - -static int mark_complete(const char *path, const unsigned char *sha1) -{ - struct commit *commit = lookup_commit_reference_gently(sha1, 1); - if (commit) { - commit->object.flags |= COMPLETE; - insert_by_date(commit, &complete); - } - return 0; -} - -int pull(char *target) -{ - unsigned char sha1[20]; - int fd = -1; - - save_commit_buffer = 0; - track_object_refs = 0; - if (write_ref && current_ref) { - fd = lock_ref_sha1(write_ref, current_ref); - if (fd < 0) - return -1; - } - - 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(lookup_unknown_object(sha1))) - return -1; - if (loop()) - return -1; - - if (write_ref) { - if (current_ref) { - write_ref_sha1(write_ref, fd, sha1); - } else { - write_ref_sha1_unlocked(write_ref, sha1); - } - } - return 0; -} |