git@vger.kernel.org list mirror (unofficial, one of many)
 help / color / mirror / Atom feed
21973e49332c36532438bb067c8821a0e377baf9 blob 3498 bytes (raw)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
 
#include "cache.h"
#include "diff.h"
#include "commit.h"
#include "sha1-lookup.h"
#include "patch-ids.h"

static int patch_id_defined(struct commit *commit)
{
	/* must be 0 or 1 parents */
	return !commit->parents || !commit->parents->next;
}

int commit_patch_id(struct commit *commit, struct diff_options *options,
		    struct object_id *oid, int diff_header_only, int stable)
{
	if (!patch_id_defined(commit))
		return -1;

	if (commit->parents)
		diff_tree_oid(&commit->parents->item->object.oid,
			      &commit->object.oid, "", options);
	else
		diff_root_tree_oid(&commit->object.oid, "", options);
	diffcore_std(options);
	return diff_flush_patch_id(options, oid, diff_header_only, stable);
}

/*
 * When we cannot load the full patch-id for both commits for whatever
 * reason, the function returns -1 (i.e. return error(...)). Despite
 * the "neq" in the name of this function, the caller only cares about
 * the return value being zero (a and b are equivalent) or non-zero (a
 * and b are different), and returning non-zero would keep both in the
 * result, even if they actually were equivalent, in order to err on
 * the side of safety.  The actual value being negative does not have
 * any significance; only that it is non-zero matters.
 */
static int patch_id_neq(const void *cmpfn_data,
			const struct hashmap_entry *eptr,
			const struct hashmap_entry *entry_or_key,
			const void *unused_keydata)
{
	/* NEEDSWORK: const correctness? */
	struct diff_options *opt = (void *)cmpfn_data;
	struct patch_id *a, *b;

	a = container_of(eptr, struct patch_id, ent);
	b = container_of(entry_or_key, struct patch_id, ent);

	if (is_null_oid(&a->patch_id) &&
	    commit_patch_id(a->commit, opt, &a->patch_id, 0, 0))
		return error("Could not get patch ID for %s",
			oid_to_hex(&a->commit->object.oid));
	if (is_null_oid(&b->patch_id) &&
	    commit_patch_id(b->commit, opt, &b->patch_id, 0, 0))
		return error("Could not get patch ID for %s",
			oid_to_hex(&b->commit->object.oid));
	return !oideq(&a->patch_id, &b->patch_id);
}

int init_patch_ids(struct repository *r, struct patch_ids *ids)
{
	memset(ids, 0, sizeof(*ids));
	repo_diff_setup(r, &ids->diffopts);
	ids->diffopts.detect_rename = 0;
	ids->diffopts.flags.recursive = 1;
	diff_setup_done(&ids->diffopts);
	hashmap_init(&ids->patches, patch_id_neq, &ids->diffopts, 256);
	return 0;
}

int free_patch_ids(struct patch_ids *ids)
{
	hashmap_clear_and_free(&ids->patches, struct patch_id, ent);
	return 0;
}

static int init_patch_id_entry(struct patch_id *patch,
			       struct commit *commit,
			       struct patch_ids *ids)
{
	struct object_id header_only_patch_id;

	patch->commit = commit;
	if (commit_patch_id(commit, &ids->diffopts, &header_only_patch_id, 1, 0))
		return -1;

	hashmap_entry_init(&patch->ent, oidhash(&header_only_patch_id));
	return 0;
}

struct patch_id *has_commit_patch_id(struct commit *commit,
				     struct patch_ids *ids)
{
	struct patch_id patch;

	if (!patch_id_defined(commit))
		return NULL;

	memset(&patch, 0, sizeof(patch));
	if (init_patch_id_entry(&patch, commit, ids))
		return NULL;

	return hashmap_get_entry(&ids->patches, &patch, ent, NULL);
}

struct patch_id *add_commit_patch_id(struct commit *commit,
				     struct patch_ids *ids)
{
	struct patch_id *key;

	if (!patch_id_defined(commit))
		return NULL;

	key = xcalloc(1, sizeof(*key));
	if (init_patch_id_entry(key, commit, ids)) {
		free(key);
		return NULL;
	}

	hashmap_add(&ids->patches, &key->ent);
	return key;
}
debug log:

solving 21973e4933 ...
found 21973e4933 in https://80x24.org/mirrors/git.git

git@vger.kernel.org list mirror (unofficial, one of many)

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://public-inbox.org/git
	git clone --mirror http://ou63pmih66umazou.onion/git
	git clone --mirror http://czquwvybam4bgbro.onion/git
	git clone --mirror http://hjrcffqmbrq6wope.onion/git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 git git/ https://public-inbox.org/git \
		git@vger.kernel.org
	public-inbox-index git

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.version-control.git
	nntp://ou63pmih66umazou.onion/inbox.comp.version-control.git
	nntp://czquwvybam4bgbro.onion/inbox.comp.version-control.git
	nntp://hjrcffqmbrq6wope.onion/inbox.comp.version-control.git
	nntp://news.gmane.io/gmane.comp.version-control.git
 note: .onion URLs require Tor: https://www.torproject.org/

code repositories for the project(s) associated with this inbox:

	https://80x24.org/mirrors/git.git

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git