1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
4#ifndef DIFF_H
5#define DIFF_H
6
7#include "tree-walk.h"
8
9struct rev_info;
10struct diff_options;
11struct diff_queue_struct;
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
24typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
25 struct diff_options *options, void *data);
26
27#define DIFF_FORMAT_RAW 0x0001
28#define DIFF_FORMAT_DIFFSTAT 0x0002
29#define DIFF_FORMAT_NUMSTAT 0x0004
30#define DIFF_FORMAT_SUMMARY 0x0008
31#define DIFF_FORMAT_PATCH 0x0010
32
33/* These override all above */
34#define DIFF_FORMAT_NAME 0x0100
35#define DIFF_FORMAT_NAME_STATUS 0x0200
36#define DIFF_FORMAT_CHECKDIFF 0x0400
37
38/* Same as output_format = 0 but we know that -s flag was given
39 * and we should not give default value to output_format.
40 */
41#define DIFF_FORMAT_NO_OUTPUT 0x0800
42
43#define DIFF_FORMAT_CALLBACK 0x1000
44
45struct diff_options {
46 const char *filter;
47 const char *orderfile;
48 const char *pickaxe;
49 const char *single_follow;
50 unsigned recursive:1,
51 tree_in_recursive:1,
52 binary:1,
53 text:1,
54 full_index:1,
55 silent_on_remove:1,
56 find_copies_harder:1,
57 color_diff:1,
58 color_diff_words:1;
59 int context;
60 int break_opt;
61 int detect_rename;
62 int line_termination;
63 int output_format;
64 int pickaxe_opts;
65 int rename_score;
66 int reverse_diff;
67 int rename_limit;
68 int setup;
69 int abbrev;
70 const char *msg_sep;
71 const char *stat_sep;
72 long xdl_opts;
73
74 int stat_width;
75 int stat_name_width;
76
77 int nr_paths;
78 const char **paths;
79 int *pathlens;
80 change_fn_t change;
81 add_remove_fn_t add_remove;
82 diff_format_fn_t format_callback;
83 void *format_callback_data;
84};
85
86enum color_diff {
87 DIFF_RESET = 0,
88 DIFF_PLAIN = 1,
89 DIFF_METAINFO = 2,
90 DIFF_FRAGINFO = 3,
91 DIFF_FILE_OLD = 4,
92 DIFF_FILE_NEW = 5,
93 DIFF_COMMIT = 6,
94 DIFF_WHITESPACE = 7,
95};
96const char *diff_get_color(int diff_use_color, enum color_diff ix);
97
98extern const char mime_boundary_leader[];
99
100extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
101extern void diff_tree_release_paths(struct diff_options *);
102extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
103 const char *base, struct diff_options *opt);
104extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
105 const char *base, struct diff_options *opt);
106
107struct combine_diff_path {
108 struct combine_diff_path *next;
109 int len;
110 char *path;
111 unsigned int mode;
112 unsigned char sha1[20];
113 struct combine_diff_parent {
114 char status;
115 unsigned int mode;
116 unsigned char sha1[20];
117 } parent[FLEX_ARRAY];
118};
119#define combine_diff_path_size(n, l) \
120 (sizeof(struct combine_diff_path) + \
121 sizeof(struct combine_diff_parent) * (n) + (l) + 1)
122
123extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
124 int dense, struct rev_info *);
125
126extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
127
128extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
129
130extern void diff_addremove(struct diff_options *,
131 int addremove,
132 unsigned mode,
133 const unsigned char *sha1,
134 const char *base,
135 const char *path);
136
137extern void diff_change(struct diff_options *,
138 unsigned mode1, unsigned mode2,
139 const unsigned char *sha1,
140 const unsigned char *sha2,
141 const char *base, const char *path);
142
143extern void diff_unmerge(struct diff_options *,
144 const char *path);
145
146extern int diff_scoreopt_parse(const char *opt);
147
148#define DIFF_SETUP_REVERSE 1
149#define DIFF_SETUP_USE_CACHE 2
150#define DIFF_SETUP_USE_SIZE_CACHE 4
151
152extern int git_diff_ui_config(const char *var, const char *value);
153extern void diff_setup(struct diff_options *);
154extern int diff_opt_parse(struct diff_options *, const char **, int);
155extern int diff_setup_done(struct diff_options *);
156
157#define DIFF_DETECT_RENAME 1
158#define DIFF_DETECT_COPY 2
159
160#define DIFF_PICKAXE_ALL 1
161#define DIFF_PICKAXE_REGEX 2
162
163extern void diffcore_std(struct diff_options *);
164
165extern void diffcore_std_no_resolve(struct diff_options *);
166
167#define COMMON_DIFF_OPTIONS_HELP \
168"\ncommon diff options:\n" \
169" -z output diff-raw with lines terminated with NUL.\n" \
170" -p output patch format.\n" \
171" -u synonym for -p.\n" \
172" --patch-with-raw\n" \
173" output both a patch and the diff-raw format.\n" \
174" --stat show diffstat instead of patch.\n" \
175" --numstat show numeric diffstat instead of patch.\n" \
176" --patch-with-stat\n" \
177" output a patch and prepend its diffstat.\n" \
178" --name-only show only names of changed files.\n" \
179" --name-status show names and status of changed files.\n" \
180" --full-index show full object name on index lines.\n" \
181" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \
182" -R swap input file pairs.\n" \
183" -B detect complete rewrites.\n" \
184" -M detect renames.\n" \
185" -C detect copies.\n" \
186" --find-copies-harder\n" \
187" try unchanged files as candidate for copy detection.\n" \
188" -l<n> limit rename attempts up to <n> paths.\n" \
189" -O<file> reorder diffs according to the <file>.\n" \
190" -S<string> find filepair whose only one side contains the string.\n" \
191" --pickaxe-all\n" \
192" show all files diff when -S is used and hit is found.\n" \
193" -a --text treat all files as text.\n"
194
195extern int diff_queue_is_empty(void);
196extern void diff_flush(struct diff_options*);
197
198/* diff-raw status letters */
199#define DIFF_STATUS_ADDED 'A'
200#define DIFF_STATUS_COPIED 'C'
201#define DIFF_STATUS_DELETED 'D'
202#define DIFF_STATUS_MODIFIED 'M'
203#define DIFF_STATUS_RENAMED 'R'
204#define DIFF_STATUS_TYPE_CHANGED 'T'
205#define DIFF_STATUS_UNKNOWN 'X'
206#define DIFF_STATUS_UNMERGED 'U'
207
208/* these are not diff-raw status letters proper, but used by
209 * diffcore-filter insn to specify additional restrictions.
210 */
211#define DIFF_STATUS_FILTER_AON '*'
212#define DIFF_STATUS_FILTER_BROKEN 'B'
213
214extern const char *diff_unique_abbrev(const unsigned char *, int);
215
216extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
217
218extern int run_diff_index(struct rev_info *revs, int cached);
219
220extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
221
222#endif /* DIFF_H */