1 /*
2  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 /*
18  * Compute the differences between two blobs and write unified diff text
19  * to the provided output FILE. Two const char * diff header labels may
20  * be provided which will be used to identify each blob in the diff output.
21  * If a label is NULL, use the blob's SHA1 checksum instead.
22  * Specified timestamps and will be shown in the diff unless they are zero.
23  * The number of context lines to show in the diff must be specified as well.
24  */
25 const struct got_error *got_diff_blob(struct got_blob_object *,
26     struct got_blob_object *, const char *, const char *, time_t, time_t,
27     int, FILE *);
28 
29 /*
30  * Compute the differences between two trees and write unified diff text
31  * to the provided output FILE. Two const char * diff header labels may
32  * be provided which will be used to identify each blob in the diff output.
33  * If a label is NULL, use the blob's SHA1 checksum instead.
34  * Specified timestamps and will be shown in the diff unless they are zero.
35  * The number of context lines to show in the diff must be specified as well.
36  */
37 const struct got_error *got_diff_tree(struct got_tree_object *,
38     struct got_tree_object *, const char *label1, const char *label2,
39     time_t, time_t, int, struct got_repository *, FILE *);
40 
41 /*
42  * Diff two objects, assuming both objects are blobs. Two const char * diff
43  * header labels may be provided which will be used to identify each blob in
44  * the diff output. If a label is NULL, use the blob's SHA1 checksum instead.
45  * Specified timestamps and will be shown in the diff unless they are zero.
46  * The number of context lines to show in the diff must be specified as well.
47  * Write unified diff text to the provided output FILE.
48  */
49 const struct got_error *got_diff_objects_as_blobs(struct got_object_id *,
50     struct got_object_id *, const char *, const char *, time_t, time_t,
51     int, struct got_repository *, FILE *);
52 
53 /*
54  * Diff two objects, assuming both objects are trees. Two const char * diff
55  * header labels may be provided which will be used to identify each blob in
56  * the trees. If a label is NULL, use the blob's SHA1 checksum instead.
57  * Specified timestamps and will be shown in the diff unless they are zero.
58  * The number of context lines to show in diffs must be specified.
59  * Write unified diff text to the provided output FILE.
60  */
61 const struct got_error *got_diff_objects_as_trees(struct got_object_id *,
62     struct got_object_id *, char *, char *, time_t, time_t, int,
63     struct got_repository *, FILE *);
64 
65 /*
66  * Diff two objects, assuming both objects are commits.
67  * The number of context lines to show in diffs must be specified.
68  * Write unified diff text to the provided output FILE.
69  */
70 const struct got_error *got_diff_objects_as_commits(struct got_object_id *,
71     struct got_object_id *, int, struct got_repository *, FILE *);
72 
73 #define GOT_DIFF_MAX_CONTEXT	64