mirror of
https://github.com/git/git.git
synced 2024-12-05 07:53:59 +08:00
eea0e59ffb
Each of these were checked with
gcc -E -I. ${SOURCE_FILE} | grep ${HEADER_FILE}
to ensure that removing the direct inclusion of the header actually
resulted in that header no longer being included at all (i.e. that
no other header pulled it in transitively).
...except for a few cases where we verified that although the header
was brought in transitively, nothing from it was directly used in
that source file. These cases were:
* builtin/credential-cache.c
* builtin/pull.c
* builtin/send-pack.c
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
#include "git-compat-util.h"
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#include "diff.h"
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#include "commit.h"
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#include "hash.h"
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#include "hex.h"
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#include "patch-ids.h"
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static int patch_id_defined(struct commit *commit)
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{
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/* must be 0 or 1 parents */
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return !commit->parents || !commit->parents->next;
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}
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int commit_patch_id(struct commit *commit, struct diff_options *options,
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struct object_id *oid, int diff_header_only)
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{
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if (!patch_id_defined(commit))
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return -1;
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if (commit->parents)
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diff_tree_oid(&commit->parents->item->object.oid,
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&commit->object.oid, "", options);
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else
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diff_root_tree_oid(&commit->object.oid, "", options);
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diffcore_std(options);
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return diff_flush_patch_id(options, oid, diff_header_only);
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}
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/*
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* When we cannot load the full patch-id for both commits for whatever
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* reason, the function returns -1 (i.e. return error(...)). Despite
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* the "neq" in the name of this function, the caller only cares about
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* the return value being zero (a and b are equivalent) or non-zero (a
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* and b are different), and returning non-zero would keep both in the
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* result, even if they actually were equivalent, in order to err on
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* the side of safety. The actual value being negative does not have
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* any significance; only that it is non-zero matters.
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*/
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static int patch_id_neq(const void *cmpfn_data,
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const struct hashmap_entry *eptr,
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const struct hashmap_entry *entry_or_key,
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const void *keydata UNUSED)
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{
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/* NEEDSWORK: const correctness? */
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struct diff_options *opt = (void *)cmpfn_data;
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struct patch_id *a, *b;
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a = container_of(eptr, struct patch_id, ent);
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b = container_of(entry_or_key, struct patch_id, ent);
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if (is_null_oid(&a->patch_id) &&
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commit_patch_id(a->commit, opt, &a->patch_id, 0))
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return error("Could not get patch ID for %s",
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oid_to_hex(&a->commit->object.oid));
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if (is_null_oid(&b->patch_id) &&
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commit_patch_id(b->commit, opt, &b->patch_id, 0))
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return error("Could not get patch ID for %s",
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oid_to_hex(&b->commit->object.oid));
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return !oideq(&a->patch_id, &b->patch_id);
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}
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int init_patch_ids(struct repository *r, struct patch_ids *ids)
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{
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memset(ids, 0, sizeof(*ids));
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repo_diff_setup(r, &ids->diffopts);
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ids->diffopts.detect_rename = 0;
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ids->diffopts.flags.recursive = 1;
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diff_setup_done(&ids->diffopts);
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hashmap_init(&ids->patches, patch_id_neq, &ids->diffopts, 256);
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return 0;
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}
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int free_patch_ids(struct patch_ids *ids)
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{
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hashmap_clear_and_free(&ids->patches, struct patch_id, ent);
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return 0;
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}
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static int init_patch_id_entry(struct patch_id *patch,
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struct commit *commit,
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struct patch_ids *ids)
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{
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struct object_id header_only_patch_id;
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patch->commit = commit;
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if (commit_patch_id(commit, &ids->diffopts, &header_only_patch_id, 1))
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return -1;
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hashmap_entry_init(&patch->ent, oidhash(&header_only_patch_id));
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return 0;
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}
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struct patch_id *patch_id_iter_first(struct commit *commit,
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struct patch_ids *ids)
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{
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struct patch_id patch;
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if (!patch_id_defined(commit))
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return NULL;
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memset(&patch, 0, sizeof(patch));
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if (init_patch_id_entry(&patch, commit, ids))
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return NULL;
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return hashmap_get_entry(&ids->patches, &patch, ent, NULL);
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}
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struct patch_id *patch_id_iter_next(struct patch_id *cur,
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struct patch_ids *ids)
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{
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return hashmap_get_next_entry(&ids->patches, cur, ent);
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}
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int has_commit_patch_id(struct commit *commit,
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struct patch_ids *ids)
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{
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return !!patch_id_iter_first(commit, ids);
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}
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struct patch_id *add_commit_patch_id(struct commit *commit,
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struct patch_ids *ids)
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{
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struct patch_id *key;
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if (!patch_id_defined(commit))
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return NULL;
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CALLOC_ARRAY(key, 1);
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if (init_patch_id_entry(key, commit, ids)) {
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free(key);
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return NULL;
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}
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hashmap_add(&ids->patches, &key->ent);
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return key;
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}
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