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427dcb4b JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
e0173ad9 JH |
4 | #ifndef DIFFCORE_H |
5 | #define DIFFCORE_H | |
427dcb4b JH |
6 | |
7 | /* This header file is internal between diff.c and its diff transformers | |
8 | * (e.g. diffcore-rename, diffcore-pickaxe). Never include this header | |
9 | * in anything else. | |
10 | */ | |
eeaa4603 JH |
11 | |
12 | /* We internally use unsigned short as the score value, | |
13 | * and rely on an int capable to hold 32-bits. -B can take | |
14 | * -Bmerge_score/break_score format and the two scores are | |
15 | * passed around in one int (high 16-bit for merge and low 16-bit | |
16 | * for break). | |
17 | */ | |
ee3d299e | 18 | #define MAX_SCORE 60000.0 |
f345b0a0 | 19 | #define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */ |
4d0f39ce | 20 | #define DEFAULT_BREAK_SCORE 30000 /* minimum for break to happen (50%) */ |
cf958afd | 21 | #define DEFAULT_MERGE_SCORE 36000 /* maximum for break-merge to happen (60%) */ |
eeaa4603 JH |
22 | |
23 | #define MINIMUM_BREAK_SIZE 400 /* do not break a file smaller than this */ | |
427dcb4b | 24 | |
122aa6f9 JK |
25 | struct userdiff_driver; |
26 | ||
427dcb4b | 27 | struct diff_filespec { |
a0d12c44 | 28 | struct object_id oid; |
427dcb4b JH |
29 | char *path; |
30 | void *data; | |
c06c7966 | 31 | void *cnt_data; |
427dcb4b | 32 | unsigned long size; |
9fb88419 | 33 | int count; /* Reference count */ |
64479711 | 34 | int rename_used; /* Count of rename users */ |
427dcb4b | 35 | unsigned short mode; /* file mode */ |
41c9560e | 36 | unsigned oid_valid : 1; /* if true, use oid and trust mode; |
427dcb4b JH |
37 | * if false, use the name and read from |
38 | * the filesystem. | |
39 | */ | |
dc7090ef | 40 | #define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) |
427dcb4b JH |
41 | unsigned should_free : 1; /* data should be free()'ed */ |
42 | unsigned should_munmap : 1; /* data should be munmap()'ed */ | |
c7e1a736 JL |
43 | unsigned dirty_submodule : 2; /* For submodules: its work tree is dirty */ |
44 | #define DIRTY_SUBMODULE_UNTRACKED 1 | |
45 | #define DIRTY_SUBMODULE_MODIFIED 2 | |
b837f5d6 | 46 | unsigned is_stdin : 1; |
25e5e2bf | 47 | unsigned has_more_entries : 1; /* only appear in combined diff */ |
122aa6f9 | 48 | /* data should be considered "binary"; -1 means "don't know yet" */ |
7d0a9a75 | 49 | signed int is_binary : 2; |
b38f70a8 | 50 | struct userdiff_driver *driver; |
427dcb4b JH |
51 | }; |
52 | ||
53 | extern struct diff_filespec *alloc_filespec(const char *); | |
9fb88419 | 54 | extern void free_filespec(struct diff_filespec *); |
427dcb4b | 55 | extern void fill_filespec(struct diff_filespec *, const unsigned char *, |
e5450100 | 56 | int, unsigned short); |
427dcb4b | 57 | |
8e5dd3d6 | 58 | #define CHECK_SIZE_ONLY 1 |
6bf3b813 | 59 | #define CHECK_BINARY 2 |
8e5dd3d6 | 60 | extern int diff_populate_filespec(struct diff_filespec *, unsigned int); |
19397b45 | 61 | extern void diff_free_filespec_data(struct diff_filespec *); |
8ae92e63 | 62 | extern void diff_free_filespec_blob(struct diff_filespec *); |
29a3eefd | 63 | extern int diff_filespec_is_binary(struct diff_filespec *); |
427dcb4b | 64 | |
52e95789 | 65 | struct diff_filepair { |
427dcb4b JH |
66 | struct diff_filespec *one; |
67 | struct diff_filespec *two; | |
01c4e70f | 68 | unsigned short int score; |
a5a323f3 | 69 | char status; /* M C R A D U etc. (see Documentation/diff-format.txt or DIFF_STATUS_* in diff.h) */ |
f345b0a0 | 70 | unsigned broken_pair : 1; |
ef677686 | 71 | unsigned renamed_pair : 1; |
e9c84099 | 72 | unsigned is_unmerged : 1; |
f34b205f NTND |
73 | unsigned done_skip_stat_unmatch : 1; |
74 | unsigned skip_stat_unmatch_result : 1; | |
427dcb4b | 75 | }; |
e9c84099 | 76 | #define DIFF_PAIR_UNMERGED(p) ((p)->is_unmerged) |
427dcb4b | 77 | |
ef677686 | 78 | #define DIFF_PAIR_RENAME(p) ((p)->renamed_pair) |
01c4e70f | 79 | |
f345b0a0 JH |
80 | #define DIFF_PAIR_BROKEN(p) \ |
81 | ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \ | |
82 | ((p)->broken_pair != 0) ) | |
83 | ||
96716a19 JH |
84 | #define DIFF_PAIR_TYPE_CHANGED(p) \ |
85 | ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode)) | |
86 | ||
4130b995 JH |
87 | #define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode) |
88 | ||
226406f6 JH |
89 | extern void diff_free_filepair(struct diff_filepair *); |
90 | ||
f7c1512a JH |
91 | extern int diff_unmodified_pair(struct diff_filepair *); |
92 | ||
427dcb4b | 93 | struct diff_queue_struct { |
52e95789 | 94 | struct diff_filepair **queue; |
427dcb4b JH |
95 | int alloc; |
96 | int nr; | |
97 | }; | |
9ca5df90 BY |
98 | #define DIFF_QUEUE_CLEAR(q) \ |
99 | do { \ | |
100 | (q)->queue = NULL; \ | |
101 | (q)->nr = (q)->alloc = 0; \ | |
98746061 | 102 | } while (0) |
427dcb4b | 103 | |
38c6f780 | 104 | extern struct diff_queue_struct diff_queued_diff; |
52e95789 JH |
105 | extern struct diff_filepair *diff_queue(struct diff_queue_struct *, |
106 | struct diff_filespec *, | |
107 | struct diff_filespec *); | |
6b14d7fa | 108 | extern void diff_q(struct diff_queue_struct *, struct diff_filepair *); |
f7c1512a | 109 | |
ce240675 | 110 | extern void diffcore_break(int); |
8082d8d3 | 111 | extern void diffcore_rename(struct diff_options *); |
eeaa4603 | 112 | extern void diffcore_merge_broken(void); |
382f013b | 113 | extern void diffcore_pickaxe(struct diff_options *); |
ce240675 JH |
114 | extern void diffcore_order(const char *orderfile); |
115 | ||
1df4320f KS |
116 | /* low-level interface to diffcore_order */ |
117 | struct obj_order { | |
118 | void *obj; /* setup by caller */ | |
119 | ||
120 | /* setup/used by order_objects() */ | |
121 | int orig_order; | |
122 | int order; | |
123 | }; | |
124 | ||
125 | typedef const char *(*obj_path_fn_t)(void *obj); | |
126 | ||
127 | void order_objects(const char *orderfile, obj_path_fn_t obj_path, | |
128 | struct obj_order *objs, int nr); | |
129 | ||
25d5ea41 JH |
130 | #define DIFF_DEBUG 0 |
131 | #if DIFF_DEBUG | |
132 | void diff_debug_filespec(struct diff_filespec *, int, const char *); | |
133 | void diff_debug_filepair(const struct diff_filepair *, int); | |
134 | void diff_debug_queue(const char *, struct diff_queue_struct *); | |
135 | #else | |
98746061 JN |
136 | #define diff_debug_filespec(a,b,c) do { /* nothing */ } while (0) |
137 | #define diff_debug_filepair(a,b) do { /* nothing */ } while (0) | |
138 | #define diff_debug_queue(a,b) do { /* nothing */ } while (0) | |
25d5ea41 JH |
139 | #endif |
140 | ||
d8c3d03a JH |
141 | extern int diffcore_count_changes(struct diff_filespec *src, |
142 | struct diff_filespec *dst, | |
c06c7966 JH |
143 | void **src_count_p, |
144 | void **dst_count_p, | |
65416758 JH |
145 | unsigned long *src_copied, |
146 | unsigned long *literal_added); | |
147 | ||
427dcb4b | 148 | #endif |