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3e8e32c32e
This will allow a diff patch id to be created using only the header data so that the contents of the file will not have to be loaded. Signed-off-by: Kevin Willford <kcwillford@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#include "cache.h"
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#include "diff.h"
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#include "commit.h"
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#include "sha1-lookup.h"
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#include "patch-ids.h"
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int commit_patch_id(struct commit *commit, struct diff_options *options,
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unsigned char *sha1)
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{
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if (commit->parents)
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diff_tree_sha1(commit->parents->item->object.oid.hash,
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commit->object.oid.hash, "", options);
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else
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diff_root_tree_sha1(commit->object.oid.hash, "", options);
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diffcore_std(options);
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return diff_flush_patch_id(options, sha1, 0);
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}
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static int patch_id_cmp(struct patch_id *a,
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struct patch_id *b,
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void *keydata)
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{
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return hashcmp(a->patch_id, b->patch_id);
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}
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int init_patch_ids(struct patch_ids *ids)
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{
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memset(ids, 0, sizeof(*ids));
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diff_setup(&ids->diffopts);
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DIFF_OPT_SET(&ids->diffopts, RECURSIVE);
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diff_setup_done(&ids->diffopts);
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hashmap_init(&ids->patches, (hashmap_cmp_fn)patch_id_cmp, 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_free(&ids->patches, 1);
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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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patch->commit = commit;
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if (commit_patch_id(commit, &ids->diffopts, patch->patch_id))
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return -1;
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hashmap_entry_init(patch, sha1hash(patch->patch_id));
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return 0;
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}
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struct patch_id *has_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 patch;
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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(&ids->patches, &patch, NULL);
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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 = xcalloc(1, sizeof(*key));
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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);
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return key;
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}
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