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63 lines
1.4 KiB
63 lines
1.4 KiB
8 years ago
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#include "blame.h"
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void blame_origin_decref(struct blame_origin *o)
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{
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if (o && --o->refcnt <= 0) {
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struct blame_origin *p, *l = NULL;
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if (o->previous)
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blame_origin_decref(o->previous);
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free(o->file.ptr);
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/* Should be present exactly once in commit chain */
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for (p = o->commit->util; p; l = p, p = p->next) {
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if (p == o) {
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if (l)
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l->next = p->next;
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else
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o->commit->util = p->next;
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free(o);
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return;
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}
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}
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die("internal error in blame_origin_decref");
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}
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}
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/*
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* Given a commit and a path in it, create a new origin structure.
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* The callers that add blame to the scoreboard should use
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* get_origin() to obtain shared, refcounted copy instead of calling
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* this function directly.
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*/
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struct blame_origin *make_origin(struct commit *commit, const char *path)
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{
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struct blame_origin *o;
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FLEX_ALLOC_STR(o, path, path);
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o->commit = commit;
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o->refcnt = 1;
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o->next = commit->util;
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commit->util = o;
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return o;
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}
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/*
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* Locate an existing origin or create a new one.
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* This moves the origin to front position in the commit util list.
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*/
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struct blame_origin *get_origin(struct commit *commit, const char *path)
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{
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struct blame_origin *o, *l;
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for (o = commit->util, l = NULL; o; l = o, o = o->next) {
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if (!strcmp(o->path, path)) {
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/* bump to front */
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if (l) {
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l->next = o->next;
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o->next = commit->util;
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commit->util = o;
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}
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return blame_origin_incref(o);
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}
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}
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return make_origin(commit, path);
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}
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