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Minor improvements to find_similar code

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This moves a couple of checks outside of the inner loop of the
find_similar rename/copy detection phase that are only dependent
on the "from" side of a detection.

Also, this replaces the inefficient initialization of the
options structure when a value is not provided explicitly by the
user.
This commit is contained in:
Russell Belfer 2013-02-22 10:21:02 -08:00
parent f827589067
commit 0a0089131f
1 changed files with 15 additions and 15 deletions
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30
src/diff_tform.c
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@ -210,7 +210,6 @@ static int normalize_find_opts(
git_diff_find_options *given)
{
git_config *cfg = NULL;
const char *val;
if (diff->repo != NULL &&
git_repository_config__weakptr(&cfg, diff->repo) < 0)
@ -219,8 +218,9 @@ static int normalize_find_opts(
if (given != NULL)
memcpy(opts, given, sizeof(*opts));
else {
git_diff_find_options init = GIT_DIFF_FIND_OPTIONS_INIT;
memmove(opts, &init, sizeof(init));
const char *val = NULL;
GIT_INIT_STRUCTURE(opts, GIT_DIFF_FIND_OPTIONS_VERSION);
opts->flags = GIT_DIFF_FIND_RENAMES;
@ -486,6 +486,17 @@ int git_diff_find_similar(
GIT_MODE_TYPE(GIT_FILEMODE_BLOB))
continue;
/* don't check UNMODIFIED files as source unless given option */
if (from->status == GIT_DELTA_UNMODIFIED &&
!FLAG_SET(opts, GIT_DIFF_FIND_COPIES_FROM_UNMODIFIED))
continue;
/* skip all but DELETED files unless copy detection is on */
if (!FLAG_SET(opts, GIT_DIFF_FIND_COPIES) &&
from->status != GIT_DELTA_DELETED &&
(from->flags & GIT_DIFF_FLAG__TO_SPLIT) == 0)
continue;
git_vector_foreach(&diff->deltas, j, to) {
if (i == j)
continue;
@ -510,18 +521,7 @@ int git_diff_find_similar(
continue;
}
/* skip all but DELETED files unless copy detection is on */
if (!FLAG_SET(opts, GIT_DIFF_FIND_COPIES) &&
from->status != GIT_DELTA_DELETED &&
(from->flags & GIT_DIFF_FLAG__TO_SPLIT) == 0)
continue;
/* don't check UNMODIFIED files as source unless given option */
if (from->status == GIT_DELTA_UNMODIFIED &&
!FLAG_SET(opts, GIT_DIFF_FIND_COPIES_FROM_UNMODIFIED))
continue;
/* cap on maximum files we'll examine */
/* cap on maximum files we'll examine (per "from" file) */
if (++tried_targets > opts.target_limit)
break;