chore(3p/git): Unvendor git and track patches instead r/2903

This was vendored a long time ago under the expectation that keeping
it in sync with cgit would be easier this way, but it has proven not
to be a big issue.

On the other hand, a vendored copy of git is an annoying maintenance
burden. It is much easier to rebase the single (dottime) patch that we
have.

This removes the vendored copy of git and instead passes the git
source code to cgit via `pkgs.srcOnly`, which includes the applied
patch so that cgit can continue rendering dottime.

Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b

1 files changed, 0 insertions, 349 deletions

diff --git a/third_party/git/walker.c b/third_party/git/walker.c
deleted file mode 100644
index 4984bf8b3d66..000000000000
--- a/third_party/git/walker.c
+++ /dev/null
@@ -1,349 +0,0 @@
-#include "cache.h"
-#include "walker.h"
-#include "repository.h"
-#include "object-store.h"
-#include "commit.h"
-#include "tree.h"
-#include "tree-walk.h"
-#include "tag.h"
-#include "blob.h"
-#include "refs.h"
-#include "progress.h"
-
-static struct object_id current_commit_oid;
-
-void walker_say(struct walker *walker, const char *fmt, ...)
-{
-	if (walker->get_verbosely) {
-		va_list ap;
-		va_start(ap, fmt);
-		vfprintf(stderr, fmt, ap);
-		va_end(ap);
-	}
-}
-
-static void report_missing(const struct object *obj)
-{
-	fprintf(stderr, "Cannot obtain needed %s %s\n",
-		obj->type ? type_name(obj->type): "object",
-		oid_to_hex(&obj->oid));
-	if (!is_null_oid(&current_commit_oid))
-		fprintf(stderr, "while processing commit %s.\n",
-			oid_to_hex(&current_commit_oid));
-}
-
-static int process(struct walker *walker, struct object *obj);
-
-static int process_tree(struct walker *walker, struct tree *tree)
-{
-	struct tree_desc desc;
-	struct name_entry entry;
-
-	if (parse_tree(tree))
-		return -1;
-
-	init_tree_desc(&desc, tree->buffer, tree->size);
-	while (tree_entry(&desc, &entry)) {
-		struct object *obj = NULL;
-
-		/* submodule commits are not stored in the superproject */
-		if (S_ISGITLINK(entry.mode))
-			continue;
-		if (S_ISDIR(entry.mode)) {
-			struct tree *tree = lookup_tree(the_repository,
-							&entry.oid);
-			if (tree)
-				obj = &tree->object;
-		}
-		else {
-			struct blob *blob = lookup_blob(the_repository,
-							&entry.oid);
-			if (blob)
-				obj = &blob->object;
-		}
-		if (!obj || process(walker, obj))
-			return -1;
-	}
-	free_tree_buffer(tree);
-	return 0;
-}
-
-/* Remember to update object flag allocation in object.h */
-#define COMPLETE	(1U << 0)
-#define SEEN		(1U << 1)
-#define TO_SCAN		(1U << 2)
-
-static struct commit_list *complete = NULL;
-
-static int process_commit(struct walker *walker, struct commit *commit)
-{
-	struct commit_list *parents;
-
-	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;
-
-	oidcpy(&current_commit_oid, &commit->object.oid);
-
-	walker_say(walker, "walk %s\n", oid_to_hex(&commit->object.oid));
-
-	if (process(walker, &get_commit_tree(commit)->object))
-		return -1;
-
-	for (parents = commit->parents; parents; parents = parents->next) {
-		if (process(walker, &parents->item->object))
-			return -1;
-	}
-
-	return 0;
-}
-
-static int process_tag(struct walker *walker, struct tag *tag)
-{
-	if (parse_tag(tag))
-		return -1;
-	return process(walker, tag->tagged);
-}
-
-static struct object_list *process_queue = NULL;
-static struct object_list **process_queue_end = &process_queue;
-
-static int process_object(struct walker *walker, struct object *obj)
-{
-	if (obj->type == OBJ_COMMIT) {
-		if (process_commit(walker, (struct commit *)obj))
-			return -1;
-		return 0;
-	}
-	if (obj->type == OBJ_TREE) {
-		if (process_tree(walker, (struct tree *)obj))
-			return -1;
-		return 0;
-	}
-	if (obj->type == OBJ_BLOB) {
-		return 0;
-	}
-	if (obj->type == OBJ_TAG) {
-		if (process_tag(walker, (struct tag *)obj))
-			return -1;
-		return 0;
-	}
-	return error("Unable to determine requirements "
-		     "of type %s for %s",
-		     type_name(obj->type), oid_to_hex(&obj->oid));
-}
-
-static int process(struct walker *walker, struct object *obj)
-{
-	if (obj->flags & SEEN)
-		return 0;
-	obj->flags |= SEEN;
-
-	if (has_object_file(&obj->oid)) {
-		/* We already have it, so we should scan it now. */
-		obj->flags |= TO_SCAN;
-	}
-	else {
-		if (obj->flags & COMPLETE)
-			return 0;
-		walker->prefetch(walker, obj->oid.hash);
-	}
-
-	object_list_insert(obj, process_queue_end);
-	process_queue_end = &(*process_queue_end)->next;
-	return 0;
-}
-
-static int loop(struct walker *walker)
-{
-	struct object_list *elem;
-	struct progress *progress = NULL;
-	uint64_t nr = 0;
-
-	if (walker->get_progress)
-		progress = start_delayed_progress(_("Fetching objects"), 0);
-
-	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 (walker->fetch(walker, obj->oid.hash)) {
-				stop_progress(&progress);
-				report_missing(obj);
-				return -1;
-			}
-		}
-		if (!obj->type)
-			parse_object(the_repository, &obj->oid);
-		if (process_object(walker, obj)) {
-			stop_progress(&progress);
-			return -1;
-		}
-		display_progress(progress, ++nr);
-	}
-	stop_progress(&progress);
-	return 0;
-}
-
-static int interpret_target(struct walker *walker, char *target, struct object_id *oid)
-{
-	if (!get_oid_hex(target, oid))
-		return 0;
-	if (!check_refname_format(target, 0)) {
-		struct ref *ref = alloc_ref(target);
-		if (!walker->fetch_ref(walker, ref)) {
-			oidcpy(oid, &ref->old_oid);
-			free(ref);
-			return 0;
-		}
-		free(ref);
-	}
-	return -1;
-}
-
-static int mark_complete(const char *path, const struct object_id *oid,
-			 int flag, void *cb_data)
-{
-	struct commit *commit = lookup_commit_reference_gently(the_repository,
-							       oid, 1);
-
-	if (commit) {
-		commit->object.flags |= COMPLETE;
-		commit_list_insert(commit, &complete);
-	}
-	return 0;
-}
-
-int walker_targets_stdin(char ***target, const char ***write_ref)
-{
-	int targets = 0, targets_alloc = 0;
-	struct strbuf buf = STRBUF_INIT;
-	*target = NULL; *write_ref = NULL;
-	while (1) {
-		char *rf_one = NULL;
-		char *tg_one;
-
-		if (strbuf_getline_lf(&buf, stdin) == EOF)
-			break;
-		tg_one = buf.buf;
-		rf_one = strchr(tg_one, '\t');
-		if (rf_one)
-			*rf_one++ = 0;
-
-		if (targets >= targets_alloc) {
-			targets_alloc = targets_alloc ? targets_alloc * 2 : 64;
-			REALLOC_ARRAY(*target, targets_alloc);
-			REALLOC_ARRAY(*write_ref, targets_alloc);
-		}
-		(*target)[targets] = xstrdup(tg_one);
-		(*write_ref)[targets] = xstrdup_or_null(rf_one);
-		targets++;
-	}
-	strbuf_release(&buf);
-	return targets;
-}
-
-void walker_targets_free(int targets, char **target, const char **write_ref)
-{
-	while (targets--) {
-		free(target[targets]);
-		if (write_ref)
-			free((char *) write_ref[targets]);
-	}
-}
-
-int walker_fetch(struct walker *walker, int targets, char **target,
-		 const char **write_ref, const char *write_ref_log_details)
-{
-	struct strbuf refname = STRBUF_INIT;
-	struct strbuf err = STRBUF_INIT;
-	struct ref_transaction *transaction = NULL;
-	struct object_id *oids;
-	char *msg = NULL;
-	int i, ret = -1;
-
-	save_commit_buffer = 0;
-
-	ALLOC_ARRAY(oids, targets);
-
-	if (write_ref) {
-		transaction = ref_transaction_begin(&err);
-		if (!transaction) {
-			error("%s", err.buf);
-			goto done;
-		}
-	}
-
-	if (!walker->get_recover) {
-		for_each_ref(mark_complete, NULL);
-		commit_list_sort_by_date(&complete);
-	}
-
-	for (i = 0; i < targets; i++) {
-		if (interpret_target(walker, target[i], oids + i)) {
-			error("Could not interpret response from server '%s' as something to pull", target[i]);
-			goto done;
-		}
-		if (process(walker, lookup_unknown_object(&oids[i])))
-			goto done;
-	}
-
-	if (loop(walker))
-		goto done;
-	if (!write_ref) {
-		ret = 0;
-		goto done;
-	}
-	if (write_ref_log_details) {
-		msg = xstrfmt("fetch from %s", write_ref_log_details);
-	} else {
-		msg = NULL;
-	}
-	for (i = 0; i < targets; i++) {
-		if (!write_ref[i])
-			continue;
-		strbuf_reset(&refname);
-		strbuf_addf(&refname, "refs/%s", write_ref[i]);
-		if (ref_transaction_update(transaction, refname.buf,
-					   oids + i, NULL, 0,
-					   msg ? msg : "fetch (unknown)",
-					   &err)) {
-			error("%s", err.buf);
-			goto done;
-		}
-	}
-	if (ref_transaction_commit(transaction, &err)) {
-		error("%s", err.buf);
-		goto done;
-	}
-
-	ret = 0;
-
-done:
-	ref_transaction_free(transaction);
-	free(msg);
-	free(oids);
-	strbuf_release(&err);
-	strbuf_release(&refname);
-	return ret;
-}
-
-void walker_free(struct walker *walker)
-{
-	walker->cleanup(walker);
-	free(walker);
-}