diff_filespec: drop xfrm_flags field
[git/git.git] / diffcore.h
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1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
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4#ifndef DIFFCORE_H
5#define DIFFCORE_H
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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 */
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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%) */
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22
23#define MINIMUM_BREAK_SIZE 400 /* do not break a file smaller than this */
427dcb4b 24
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25struct userdiff_driver;
26
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27struct diff_filespec {
28 unsigned char sha1[20];
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 */
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35 unsigned short mode; /* file mode */
36 unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
37 * if false, use the name and read from
38 * the filesystem.
39 */
dc7090ef 40#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
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41 unsigned should_free : 1; /* data should be free()'ed */
42 unsigned should_munmap : 1; /* data should be munmap()'ed */
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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 */
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48 struct userdiff_driver *driver;
49 /* data should be considered "binary"; -1 means "don't know yet" */
50 int is_binary;
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51};
52
53extern struct diff_filespec *alloc_filespec(const char *);
9fb88419 54extern void free_filespec(struct diff_filespec *);
427dcb4b 55extern void fill_filespec(struct diff_filespec *, const unsigned char *,
e5450100 56 int, unsigned short);
427dcb4b 57
f0c6b2a2 58extern int diff_populate_filespec(struct diff_filespec *, int);
19397b45 59extern void diff_free_filespec_data(struct diff_filespec *);
8ae92e63 60extern void diff_free_filespec_blob(struct diff_filespec *);
29a3eefd 61extern int diff_filespec_is_binary(struct diff_filespec *);
427dcb4b 62
52e95789 63struct diff_filepair {
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64 struct diff_filespec *one;
65 struct diff_filespec *two;
01c4e70f 66 unsigned short int score;
a5a323f3 67 char status; /* M C R A D U etc. (see Documentation/diff-format.txt or DIFF_STATUS_* in diff.h) */
f345b0a0 68 unsigned broken_pair : 1;
ef677686 69 unsigned renamed_pair : 1;
e9c84099 70 unsigned is_unmerged : 1;
427dcb4b 71};
e9c84099 72#define DIFF_PAIR_UNMERGED(p) ((p)->is_unmerged)
427dcb4b 73
ef677686 74#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
01c4e70f 75
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76#define DIFF_PAIR_BROKEN(p) \
77 ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \
78 ((p)->broken_pair != 0) )
79
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80#define DIFF_PAIR_TYPE_CHANGED(p) \
81 ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
82
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83#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
84
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85extern void diff_free_filepair(struct diff_filepair *);
86
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87extern int diff_unmodified_pair(struct diff_filepair *);
88
427dcb4b 89struct diff_queue_struct {
52e95789 90 struct diff_filepair **queue;
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91 int alloc;
92 int nr;
93};
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94#define DIFF_QUEUE_CLEAR(q) \
95 do { \
96 (q)->queue = NULL; \
97 (q)->nr = (q)->alloc = 0; \
98746061 98 } while (0)
427dcb4b 99
38c6f780 100extern struct diff_queue_struct diff_queued_diff;
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101extern struct diff_filepair *diff_queue(struct diff_queue_struct *,
102 struct diff_filespec *,
103 struct diff_filespec *);
6b14d7fa 104extern void diff_q(struct diff_queue_struct *, struct diff_filepair *);
f7c1512a 105
ce240675 106extern void diffcore_break(int);
8082d8d3 107extern void diffcore_rename(struct diff_options *);
eeaa4603 108extern void diffcore_merge_broken(void);
382f013b 109extern void diffcore_pickaxe(struct diff_options *);
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110extern void diffcore_order(const char *orderfile);
111
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112#define DIFF_DEBUG 0
113#if DIFF_DEBUG
114void diff_debug_filespec(struct diff_filespec *, int, const char *);
115void diff_debug_filepair(const struct diff_filepair *, int);
116void diff_debug_queue(const char *, struct diff_queue_struct *);
117#else
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118#define diff_debug_filespec(a,b,c) do { /* nothing */ } while (0)
119#define diff_debug_filepair(a,b) do { /* nothing */ } while (0)
120#define diff_debug_queue(a,b) do { /* nothing */ } while (0)
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121#endif
122
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123extern int diffcore_count_changes(struct diff_filespec *src,
124 struct diff_filespec *dst,
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125 void **src_count_p,
126 void **dst_count_p,
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127 unsigned long delta_limit,
128 unsigned long *src_copied,
129 unsigned long *literal_added);
130
427dcb4b 131#endif