check->attr = attr_diff;
}
-#define FIRST_FEW_BYTES 8000
static int file_is_binary(struct diff_filespec *one)
{
- unsigned long sz;
struct git_attr_check attr_diff_check;
setup_diff_attr_check(&attr_diff_check);
return 0;
diff_populate_filespec(one, 0);
}
- sz = one->size;
- if (FIRST_FEW_BYTES < sz)
- sz = FIRST_FEW_BYTES;
- return !!memchr(one->data, 0, sz);
+ return buffer_is_binary(one->data, one->size);
}
static void builtin_diff(const char *name_a,
}
/*
- * Given a name and sha1 pair, if the dircache tells us the file in
+ * Given a name and sha1 pair, if the index tells us the file in
* the work tree has that object contents, return true, so that
* prepare_temp_file() does not have to inflate and extract.
*/
if (size_only && 0 < s->size)
return 0;
- if (S_ISDIRLNK(s->mode))
+ if (S_ISGITLINK(s->mode))
return diff_populate_gitlink(s, size_only);
if (!s->sha1_valid ||
hashclr(one->sha1);
}
+static int similarity_index(struct diff_filepair *p)
+{
+ return p->score * 100 / MAX_SCORE;
+}
+
static void run_diff(struct diff_filepair *p, struct diff_options *o)
{
const char *pgm = external_diff();
"similarity index %d%%\n"
"copy from %s\n"
"copy to %s\n",
- (int)(0.5 + p->score * 100.0/MAX_SCORE),
- name_munged, other_munged);
+ similarity_index(p), name_munged, other_munged);
break;
case DIFF_STATUS_RENAMED:
len += snprintf(msg + len, sizeof(msg) - len,
"similarity index %d%%\n"
"rename from %s\n"
"rename to %s\n",
- (int)(0.5 + p->score * 100.0/MAX_SCORE),
- name_munged, other_munged);
+ similarity_index(p), name_munged, other_munged);
break;
case DIFF_STATUS_MODIFIED:
if (p->score) {
len += snprintf(msg + len, sizeof(msg) - len,
"dissimilarity index %d%%\n",
- (int)(0.5 + p->score *
- 100.0/MAX_SCORE));
+ similarity_index(p));
complete_rewrite = 1;
break;
}
return 1;
}
+static int diff_scoreopt_parse(const char *opt);
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
options->detect_rename = DIFF_DETECT_RENAME;
}
else if (!prefixcmp(arg, "-C")) {
+ if (options->detect_rename == DIFF_DETECT_COPY)
+ options->find_copies_harder = 1;
if ((options->rename_score =
diff_scoreopt_parse(arg)) == -1)
return -1;
}
else if (!strcmp(arg, "--find-copies-harder"))
options->find_copies_harder = 1;
+ else if (!strcmp(arg, "--follow"))
+ options->follow_renames = 1;
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
else if (!prefixcmp(arg, "--abbrev=")) {
return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale));
}
-int diff_scoreopt_parse(const char *opt)
+static int diff_scoreopt_parse(const char *opt)
{
int opt1, opt2, cmd;
}
if (p->score)
- sprintf(status, "%c%03d", p->status,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ sprintf(status, "%c%03d", p->status, similarity_index(p));
else {
status[0] = p->status;
status[1] = 0;
{
char *names = pprint_rename(p->one->path, p->two->path);
- printf(" %s %s (%d%%)\n", renamecopy, names,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ printf(" %s %s (%d%%)\n", renamecopy, names, similarity_index(p));
free(names);
show_mode_change(p, 0);
}
if (p->score) {
char *name = quote_one(p->two->path);
printf(" rewrite %s (%d%%)\n", name,
- (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ similarity_index(p));
free(name);
show_mode_change(p, 0);
} else show_mode_change(p, 1);
{
if (options->quiet)
return;
+
+ /*
+ * break/rename count similarity differently depending on
+ * the binary-ness.
+ */
+ if ((options->break_opt != -1) || (options->detect_rename)) {
+ struct diff_queue_struct *q = &diff_queued_diff;
+ int i;
+
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ p->one->is_binary = file_is_binary(p->one);
+ p->two->is_binary = file_is_binary(p->two);
+ }
+ }
+
if (options->break_opt != -1)
diffcore_break(options->break_opt);
if (options->detect_rename)
* entries to the diff-core. They will be prefixed
* with something like '=' or '*' (I haven't decided
* which but should not make any difference).
- * Feeding the same new and old to diff_change()
+ * Feeding the same new and old to diff_change()
* also has the same effect.
* Before the final output happens, they are pruned after
* merged into rename/copy pairs as appropriate.
unsigned old_mode, unsigned new_mode,
const unsigned char *old_sha1,
const unsigned char *new_sha1,
- const char *base, const char *path)
+ const char *base, const char *path)
{
char concatpath[PATH_MAX];
struct diff_filespec *one, *two;