1 /*
2  * Copyright (c) 2020 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 #include "arraylist.h"
18 #include "diff_main.h"
19 #include "diff_output.h"
20 
21 enum got_diff_algorithm {
22 	GOT_DIFF_ALGORITHM_MYERS,
23 	GOT_DIFF_ALGORITHM_PATIENCE,
24 };
25 
26 enum got_diff_output_format {
27 	GOT_DIFF_OUTPUT_UNIDIFF,
28 	GOT_DIFF_OUTPUT_EDSCRIPT,
29 };
30 
31 struct got_diffreg_result {
32 	struct diff_result *result;
33 	FILE *f1;
34 	char *map1;
35 	size_t size1;
36 	FILE *f2;
37 	char *map2;
38 	size_t size2;
39 	struct diff_data left;
40 	struct diff_data right;
41 };
42 
43 #define GOT_DIFF_CONFLICT_MARKER_BEGIN	"<<<<<<<"
44 #define GOT_DIFF_CONFLICT_MARKER_ORIG	"|||||||"
45 #define GOT_DIFF_CONFLICT_MARKER_SEP	"======="
46 #define GOT_DIFF_CONFLICT_MARKER_END	">>>>>>>"
47 
48 const struct got_error *got_diff_get_config(struct diff_config **,
49     enum got_diff_algorithm, diff_atomize_func_t, void *);
50 const struct got_error *got_diff_prepare_file(FILE *, char **, size_t *,
51     struct diff_data *, const struct diff_config *, int, int); 
52 const struct got_error *got_diffreg(struct got_diffreg_result **, FILE *,
53     FILE *, enum got_diff_algorithm, int, int);
54 const struct got_error *got_diffreg_output(off_t **, size_t *,
55     struct got_diffreg_result *, int, int, const char *, const char *,
56     enum got_diff_output_format, int, FILE *);
57 const struct got_error *got_diffreg_result_free(struct got_diffreg_result *);
58 const struct got_error *got_diffreg_result_free_left(
59     struct got_diffreg_result *);
60 const struct got_error *got_diffreg_result_free_right(
61     struct got_diffreg_result *);
62 const struct got_error *got_diffreg_close(FILE *, char *, size_t,
63     FILE *, char *, size_t);
64 
65 const struct got_error *got_merge_diff3(int *, int, FILE *, FILE *, FILE *,
66     const char *, const char *, const char *, enum got_diff_algorithm);
67 
68 const struct got_error *got_diff_files(struct got_diffreg_result **, FILE *,
69     const char *, FILE *, const char *, int, int, int, FILE *);