git-send-email: Fully implement --quiet and document it.
[git/git.git] / diff.h
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1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
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4#ifndef DIFF_H
5#define DIFF_H
6
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7#define DIFF_FILE_CANON_MODE(mode) \
8 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
9 S_ISLNK(mode) ? S_IFLNK : S_IFDIR)
10
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11struct tree_desc {
12 void *buf;
13 unsigned long size;
14};
15
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16extern void update_tree_entry(struct tree_desc *);
17extern const unsigned char *tree_entry_extract(struct tree_desc *, const char **, unsigned int *);
18
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19struct diff_options;
20
21typedef void (*change_fn_t)(struct diff_options *options,
22 unsigned old_mode, unsigned new_mode,
23 const unsigned char *old_sha1,
24 const unsigned char *new_sha1,
25 const char *base, const char *path);
26
27typedef void (*add_remove_fn_t)(struct diff_options *options,
28 int addremove, unsigned mode,
29 const unsigned char *sha1,
30 const char *base, const char *path);
31
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32struct diff_options {
33 const char **paths;
34 const char *filter;
35 const char *orderfile;
36 const char *pickaxe;
ac1b3d12 37 unsigned recursive:1,
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38 tree_in_recursive:1,
39 full_index:1;
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40 int break_opt;
41 int detect_rename;
42 int find_copies_harder;
43 int line_termination;
44 int output_format;
45 int pickaxe_opts;
46 int rename_score;
47 int reverse_diff;
8082d8d3 48 int rename_limit;
6b5ee137 49 int setup;
47dd0d59 50 int abbrev;
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51
52 change_fn_t change;
53 add_remove_fn_t add_remove;
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54};
55
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56extern void diff_tree_setup_paths(const char **paths);
57extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
58 const char *base, struct diff_options *opt);
59extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
60 const char *base, struct diff_options *opt);
61
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62struct combine_diff_path {
63 struct combine_diff_path *next;
64 int len;
65 char *path;
66 unsigned char sha1[20];
67 unsigned char parent_sha1[FLEX_ARRAY][20];
68};
69
70int show_combined_diff(struct combine_diff_path *elem, int num_parent,
71 int dense, const char *header, int show_empty);
72
d8f4790e 73extern int diff_tree_combined_merge(const unsigned char *sha1, const char *, int, int);
af3feefa 74
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75extern void diff_addremove(struct diff_options *,
76 int addremove,
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77 unsigned mode,
78 const unsigned char *sha1,
79 const char *base,
80 const char *path);
81
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82extern void diff_change(struct diff_options *,
83 unsigned mode1, unsigned mode2,
84 const unsigned char *sha1,
85 const unsigned char *sha2,
86 const char *base, const char *path);
77eb2720 87
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88extern void diff_unmerge(struct diff_options *,
89 const char *path);
77eb2720 90
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91extern int diff_scoreopt_parse(const char *opt);
92
19feebc8 93#define DIFF_SETUP_REVERSE 1
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94#define DIFF_SETUP_USE_CACHE 2
95#define DIFF_SETUP_USE_SIZE_CACHE 4
ce240675 96
9ce392f4 97extern int git_diff_config(const char *var, const char *value);
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98extern void diff_setup(struct diff_options *);
99extern int diff_opt_parse(struct diff_options *, const char **, int);
100extern int diff_setup_done(struct diff_options *);
86436c28 101
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102#define DIFF_DETECT_RENAME 1
103#define DIFF_DETECT_COPY 2
104
367cec1c 105#define DIFF_PICKAXE_ALL 1
f345b0a0 106
6b5ee137 107extern void diffcore_std(struct diff_options *);
f2ce9fde 108
6b5ee137 109extern void diffcore_std_no_resolve(struct diff_options *);
befe8639 110
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111#define COMMON_DIFF_OPTIONS_HELP \
112"\ncommon diff options:\n" \
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113" -z output diff-raw with lines terminated with NUL.\n" \
114" -p output patch format.\n" \
115" -u synonym for -p.\n" \
116" --name-only show only names of changed files.\n" \
946f5f7c 117" --name-status show names and status of changed files.\n" \
47dd0d59 118" --full-index show full object name on index lines.\n" \
913419fc 119" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \
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120" -R swap input file pairs.\n" \
121" -B detect complete rewrites.\n" \
122" -M detect renames.\n" \
123" -C detect copies.\n" \
dda2d79a 124" --find-copies-harder\n" \
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125" try unchanged files as candidate for copy detection.\n" \
126" -l<n> limit rename attempts up to <n> paths.\n" \
127" -O<file> reorder diffs according to the <file>.\n" \
128" -S<string> find filepair whose only one side contains the string.\n" \
dda2d79a 129" --pickaxe-all\n" \
8082d8d3 130" show all files diff when -S is used and hit is found.\n"
dda2d79a 131
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132extern int diff_queue_is_empty(void);
133
e68b6f15 134#define DIFF_FORMAT_RAW 1
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135#define DIFF_FORMAT_PATCH 2
136#define DIFF_FORMAT_NO_OUTPUT 3
52f28529 137#define DIFF_FORMAT_NAME 4
946f5f7c 138#define DIFF_FORMAT_NAME_STATUS 5
19feebc8 139
6b5ee137 140extern void diff_flush(struct diff_options*);
86436c28 141
e7baa4f4 142/* diff-raw status letters */
ca8c9156 143#define DIFF_STATUS_ADDED 'A'
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144#define DIFF_STATUS_COPIED 'C'
145#define DIFF_STATUS_DELETED 'D'
146#define DIFF_STATUS_MODIFIED 'M'
147#define DIFF_STATUS_RENAMED 'R'
148#define DIFF_STATUS_TYPE_CHANGED 'T'
149#define DIFF_STATUS_UNKNOWN 'X'
150#define DIFF_STATUS_UNMERGED 'U'
151
152/* these are not diff-raw status letters proper, but used by
153 * diffcore-filter insn to specify additional restrictions.
154 */
0b34379a 155#define DIFF_STATUS_FILTER_AON '*'
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156#define DIFF_STATUS_FILTER_BROKEN 'B'
157
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158extern const char *diff_unique_abbrev(const unsigned char *, int);
159
86436c28 160#endif /* DIFF_H */