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 diff_config *got_diff_get_config(enum got_diff_algorithm);
49 const struct got_error *got_diff_prepare_file(FILE **, char **, int *,
50     size_t *, struct diff_data *, const struct diff_config *, int); 
51 const struct got_error *got_diffreg_prepared_files(struct got_diffreg_result **,
52     const struct diff_config *, struct diff_data *, FILE *, char *, size_t,
53     struct diff_data *, FILE *, char *, size_t);
54 const struct got_error *got_diff_blob_prepared_file(
55     struct got_diffreg_result **, struct diff_data *, struct got_blob_object *,
56     struct diff_data *, FILE *, char *, size_t, const struct diff_config *,
57     int);
58 const struct got_error *got_diffreg(struct got_diffreg_result **, FILE *, FILE *,
59     enum got_diff_algorithm, int);
60 const struct got_error *got_diffreg_output(off_t **, size_t *,
61     struct got_diffreg_result *, FILE *, FILE *, const char *, const char *,
62     enum got_diff_output_format, int, FILE *);
63 const struct got_error *got_diffreg_result_free(struct got_diffreg_result *);
64 const struct got_error *got_diffreg_result_free_left(
65     struct got_diffreg_result *);
66 const struct got_error *got_diffreg_result_free_right(
67     struct got_diffreg_result *);
68 const struct got_error *got_diffreg_close(FILE *, char *, size_t,
69     FILE *, char *, size_t);
70 
71 const struct got_error *got_merge_diff3(int *, int, const char *, const char *,
72     const char *, const char *, const char *, const char *);
73 
74 const struct got_error *got_diff_files(struct got_diffreg_result **, FILE *,
75     const char *, FILE *, const char *, int, int, FILE *);
76 
77 void got_diff_dump_change(FILE *, struct diff_chunk *, FILE *, FILE *);