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[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
1b0c7174 7#include "tree-walk.h"
50f9a858 8
91539833 9struct rev_info;
ac1b3d12 10struct diff_options;
04245581 11struct diff_queue_struct;
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12
13typedef void (*change_fn_t)(struct diff_options *options,
14 unsigned old_mode, unsigned new_mode,
15 const unsigned char *old_sha1,
16 const unsigned char *new_sha1,
17 const char *base, const char *path);
18
19typedef void (*add_remove_fn_t)(struct diff_options *options,
20 int addremove, unsigned mode,
21 const unsigned char *sha1,
22 const char *base, const char *path);
23
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24typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
25 struct diff_options *options, void *data);
26
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27#define DIFF_FORMAT_RAW 0x0001
28#define DIFF_FORMAT_DIFFSTAT 0x0002
29#define DIFF_FORMAT_SUMMARY 0x0004
30#define DIFF_FORMAT_PATCH 0x0008
31
32/* These override all above */
33#define DIFF_FORMAT_NAME 0x0010
34#define DIFF_FORMAT_NAME_STATUS 0x0020
35#define DIFF_FORMAT_CHECKDIFF 0x0040
36
37/* Same as output_format = 0 but we know that -s flag was given
38 * and we should not give default value to output_format.
39 */
40#define DIFF_FORMAT_NO_OUTPUT 0x0080
41
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42#define DIFF_FORMAT_CALLBACK 0x0100
43
6b5ee137 44struct diff_options {
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45 const char *filter;
46 const char *orderfile;
47 const char *pickaxe;
ac1b3d12 48 unsigned recursive:1,
80b1e511 49 tree_in_recursive:1,
0660626c 50 binary:1,
6d64ea96 51 text:1,
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52 full_index:1,
53 silent_on_remove:1,
4bbd261b 54 find_copies_harder:1,
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55 color_diff:1,
56 color_diff_words:1;
ee1e5412 57 int context;
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58 int break_opt;
59 int detect_rename;
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60 int line_termination;
61 int output_format;
62 int pickaxe_opts;
63 int rename_score;
64 int reverse_diff;
8082d8d3 65 int rename_limit;
6b5ee137 66 int setup;
47dd0d59 67 int abbrev;
39bc9a6c 68 const char *msg_sep;
698ce6f8 69 const char *stat_sep;
0d21efa5 70 long xdl_opts;
ac1b3d12 71
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72 int nr_paths;
73 const char **paths;
74 int *pathlens;
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75 change_fn_t change;
76 add_remove_fn_t add_remove;
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77 diff_format_fn_t format_callback;
78 void *format_callback_data;
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79};
80
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81enum color_diff {
82 DIFF_RESET = 0,
83 DIFF_PLAIN = 1,
84 DIFF_METAINFO = 2,
85 DIFF_FRAGINFO = 3,
86 DIFF_FILE_OLD = 4,
87 DIFF_FILE_NEW = 5,
88 DIFF_COMMIT = 6,
89};
90const char *diff_get_color(int diff_use_color, enum color_diff ix);
91
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92extern const char mime_boundary_leader[];
93
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94extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
95extern void diff_tree_release_paths(struct diff_options *);
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96extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
97 const char *base, struct diff_options *opt);
98extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
99 const char *base, struct diff_options *opt);
100
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101struct combine_diff_path {
102 struct combine_diff_path *next;
103 int len;
104 char *path;
2454c962 105 unsigned int mode;
ea726d02 106 unsigned char sha1[20];
2454c962 107 struct combine_diff_parent {
d416df88 108 char status;
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109 unsigned int mode;
110 unsigned char sha1[20];
111 } parent[FLEX_ARRAY];
ea726d02 112};
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113#define combine_diff_path_size(n, l) \
114 (sizeof(struct combine_diff_path) + \
115 sizeof(struct combine_diff_parent) * (n) + (l) + 1)
ea726d02 116
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117extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
118 int dense, struct rev_info *);
ea726d02 119
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120extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
121
91539833 122extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
af3feefa 123
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124extern void diff_addremove(struct diff_options *,
125 int addremove,
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126 unsigned mode,
127 const unsigned char *sha1,
128 const char *base,
129 const char *path);
130
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131extern void diff_change(struct diff_options *,
132 unsigned mode1, unsigned mode2,
133 const unsigned char *sha1,
134 const unsigned char *sha2,
135 const char *base, const char *path);
77eb2720 136
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137extern void diff_unmerge(struct diff_options *,
138 const char *path);
77eb2720 139
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140extern int diff_scoreopt_parse(const char *opt);
141
19feebc8 142#define DIFF_SETUP_REVERSE 1
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143#define DIFF_SETUP_USE_CACHE 2
144#define DIFF_SETUP_USE_SIZE_CACHE 4
ce240675 145
83ad63cf 146extern int git_diff_ui_config(const char *var, const char *value);
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147extern void diff_setup(struct diff_options *);
148extern int diff_opt_parse(struct diff_options *, const char **, int);
149extern int diff_setup_done(struct diff_options *);
86436c28 150
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151#define DIFF_DETECT_RENAME 1
152#define DIFF_DETECT_COPY 2
153
367cec1c 154#define DIFF_PICKAXE_ALL 1
d01d8c67 155#define DIFF_PICKAXE_REGEX 2
f345b0a0 156
6b5ee137 157extern void diffcore_std(struct diff_options *);
f2ce9fde 158
6b5ee137 159extern void diffcore_std_no_resolve(struct diff_options *);
befe8639 160
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161#define COMMON_DIFF_OPTIONS_HELP \
162"\ncommon diff options:\n" \
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163" -z output diff-raw with lines terminated with NUL.\n" \
164" -p output patch format.\n" \
165" -u synonym for -p.\n" \
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166" --patch-with-raw\n" \
167" output both a patch and the diff-raw format.\n" \
d75f7952 168" --stat show diffstat instead of patch.\n" \
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169" --patch-with-stat\n" \
170" output a patch and prepend its diffstat.\n" \
8082d8d3 171" --name-only show only names of changed files.\n" \
946f5f7c 172" --name-status show names and status of changed files.\n" \
47dd0d59 173" --full-index show full object name on index lines.\n" \
913419fc 174" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \
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175" -R swap input file pairs.\n" \
176" -B detect complete rewrites.\n" \
177" -M detect renames.\n" \
178" -C detect copies.\n" \
dda2d79a 179" --find-copies-harder\n" \
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180" try unchanged files as candidate for copy detection.\n" \
181" -l<n> limit rename attempts up to <n> paths.\n" \
182" -O<file> reorder diffs according to the <file>.\n" \
183" -S<string> find filepair whose only one side contains the string.\n" \
dda2d79a 184" --pickaxe-all\n" \
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185" show all files diff when -S is used and hit is found.\n" \
186" -a --text treat all files as text.\n"
dda2d79a 187
38c6f780 188extern int diff_queue_is_empty(void);
6b5ee137 189extern void diff_flush(struct diff_options*);
86436c28 190
e7baa4f4 191/* diff-raw status letters */
ca8c9156 192#define DIFF_STATUS_ADDED 'A'
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193#define DIFF_STATUS_COPIED 'C'
194#define DIFF_STATUS_DELETED 'D'
195#define DIFF_STATUS_MODIFIED 'M'
196#define DIFF_STATUS_RENAMED 'R'
197#define DIFF_STATUS_TYPE_CHANGED 'T'
198#define DIFF_STATUS_UNKNOWN 'X'
199#define DIFF_STATUS_UNMERGED 'U'
200
201/* these are not diff-raw status letters proper, but used by
202 * diffcore-filter insn to specify additional restrictions.
203 */
0b34379a 204#define DIFF_STATUS_FILTER_AON '*'
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205#define DIFF_STATUS_FILTER_BROKEN 'B'
206
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207extern const char *diff_unique_abbrev(const unsigned char *, int);
208
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209extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
210
5c21ac0e 211extern int run_diff_index(struct rev_info *revs, int cached);
e09ad6e1 212
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213extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
214
86436c28 215#endif /* DIFF_H */