freshlybakedca.ke
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1/*
2 * Copyright (C) 2021, Google LLC.
3 * Based on diffcore-order.c, which is Copyright (C) 2005, Junio C Hamano
4 */
5
6#include "git-compat-util.h"
7#include "gettext.h"
8#include "diff.h"
9#include "diffcore.h"
10
11void diffcore_rotate(struct diff_options *opt)
12{
13 struct diff_queue_struct *q = &diff_queued_diff;
14 struct diff_queue_struct outq = DIFF_QUEUE_INIT;
15 int rotate_to, i;
16
17 if (!q->nr)
18 return;
19
20 for (i = 0; i < q->nr; i++) {
21 int cmp = strcmp(opt->rotate_to, q->queue[i]->two->path);
22 if (!cmp)
23 break; /* exact match */
24 if (!opt->rotate_to_strict && cmp < 0)
25 break; /* q->queue[i] is now past the target pathname */
26 }
27
28 if (q->nr <= i) {
29 /* we did not find the specified path */
30 if (opt->rotate_to_strict)
31 die(_("No such path '%s' in the diff"), opt->rotate_to);
32 return;
33 }
34
35 rotate_to = i;
36
37 for (i = rotate_to; i < q->nr; i++)
38 diff_q(&outq, q->queue[i]);
39 for (i = 0; i < rotate_to; i++) {
40 if (opt->skip_instead_of_rotate)
41 diff_free_filepair(q->queue[i]);
42 else
43 diff_q(&outq, q->queue[i]);
44 }
45 free(q->queue);
46 *q = outq;
47}