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-rw-r--r--diff.c88
1 files changed, 87 insertions, 1 deletions
diff --git a/diff.c b/diff.c
index 7a7b839..00b1044 100644
--- a/diff.c
+++ b/diff.c
@@ -1233,6 +1233,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
}
else if (!strcmp(arg, "--stat"))
options->output_format = DIFF_FORMAT_DIFFSTAT;
+ else if (!strcmp(arg, "--summary"))
+ options->summary = 1;
else if (!strcmp(arg, "--patch-with-stat")) {
options->output_format = DIFF_FORMAT_PATCH;
options->with_stat = 1;
@@ -1703,6 +1705,85 @@ static void flush_one_pair(struct diff_filepair *p,
}
}
+static void show_file_mode_name(const char *newdelete, struct diff_filespec *fs)
+{
+ if (fs->mode)
+ printf(" %s mode %06o %s\n", newdelete, fs->mode, fs->path);
+ else
+ printf(" %s %s\n", newdelete, fs->path);
+}
+
+
+static void show_mode_change(struct diff_filepair *p, int show_name)
+{
+ if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) {
+ if (show_name)
+ printf(" mode change %06o => %06o %s\n",
+ p->one->mode, p->two->mode, p->two->path);
+ else
+ printf(" mode change %06o => %06o\n",
+ p->one->mode, p->two->mode);
+ }
+}
+
+static void show_rename_copy(const char *renamecopy, struct diff_filepair *p)
+{
+ const char *old, *new;
+
+ /* Find common prefix */
+ old = p->one->path;
+ new = p->two->path;
+ while (1) {
+ const char *slash_old, *slash_new;
+ slash_old = strchr(old, '/');
+ slash_new = strchr(new, '/');
+ if (!slash_old ||
+ !slash_new ||
+ slash_old - old != slash_new - new ||
+ memcmp(old, new, slash_new - new))
+ break;
+ old = slash_old + 1;
+ new = slash_new + 1;
+ }
+ /* p->one->path thru old is the common prefix, and old and new
+ * through the end of names are renames
+ */
+ if (old != p->one->path)
+ printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
+ (int)(old - p->one->path), p->one->path,
+ old, new, (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ else
+ printf(" %s %s => %s (%d%%)\n", renamecopy,
+ p->one->path, p->two->path,
+ (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ show_mode_change(p, 0);
+}
+
+static void diff_summary(struct diff_filepair *p)
+{
+ switch(p->status) {
+ case DIFF_STATUS_DELETED:
+ show_file_mode_name("delete", p->one);
+ break;
+ case DIFF_STATUS_ADDED:
+ show_file_mode_name("create", p->two);
+ break;
+ case DIFF_STATUS_COPIED:
+ show_rename_copy("copy", p);
+ break;
+ case DIFF_STATUS_RENAMED:
+ show_rename_copy("rename", p);
+ break;
+ default:
+ if (p->score) {
+ printf(" rewrite %s (%d%%)\n", p->two->path,
+ (int)(0.5 + p->score * 100.0/MAX_SCORE));
+ show_mode_change(p, 0);
+ } else show_mode_change(p, 1);
+ break;
+ }
+}
+
void diff_flush(struct diff_options *options)
{
struct diff_queue_struct *q = &diff_queued_diff;
@@ -1736,7 +1817,6 @@ void diff_flush(struct diff_options *options)
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
flush_one_pair(p, diff_output_format, options, diffstat);
- diff_free_filepair(p);
}
if (diffstat) {
@@ -1744,6 +1824,12 @@ void diff_flush(struct diff_options *options)
free(diffstat);
}
+ for (i = 0; i < q->nr; i++) {
+ if (options->summary)
+ diff_summary(q->queue[i]);
+ diff_free_filepair(q->queue[i]);
+ }
+
free(q->queue);
q->queue = NULL;
q->nr = q->alloc = 0;