1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
4#ifndef DIFF_H
5#define DIFF_H
6
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
11struct tree_desc {
12 void *buf;
13 unsigned long size;
14};
15
16struct diff_options;
17
18typedef void (*change_fn_t)(struct diff_options *options,
19 unsigned old_mode, unsigned new_mode,
20 const unsigned char *old_sha1,
21 const unsigned char *new_sha1,
22 const char *base, const char *path);
23
24typedef void (*add_remove_fn_t)(struct diff_options *options,
25 int addremove, unsigned mode,
26 const unsigned char *sha1,
27 const char *base, const char *path);
28
29struct diff_options {
30 const char **paths;
31 const char *filter;
32 const char *orderfile;
33 const char *pickaxe;
34 unsigned recursive:1,
35 tree_in_recursive:1;
36 int break_opt;
37 int detect_rename;
38 int find_copies_harder;
39 int line_termination;
40 int output_format;
41 int pickaxe_opts;
42 int rename_score;
43 int reverse_diff;
44 int rename_limit;
45 int setup;
46
47 change_fn_t change;
48 add_remove_fn_t add_remove;
49};
50
51extern void diff_tree_setup_paths(const char **paths);
52extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
53 const char *base, struct diff_options *opt);
54extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
55 const char *base, struct diff_options *opt);
56
57extern void diff_addremove(struct diff_options *,
58 int addremove,
59 unsigned mode,
60 const unsigned char *sha1,
61 const char *base,
62 const char *path);
63
64extern void diff_change(struct diff_options *,
65 unsigned mode1, unsigned mode2,
66 const unsigned char *sha1,
67 const unsigned char *sha2,
68 const char *base, const char *path);
69
70extern void diff_unmerge(struct diff_options *,
71 const char *path);
72
73extern int diff_scoreopt_parse(const char *opt);
74
75#define DIFF_SETUP_REVERSE 1
76#define DIFF_SETUP_USE_CACHE 2
77#define DIFF_SETUP_USE_SIZE_CACHE 4
78
79extern void diff_setup(struct diff_options *);
80extern int diff_opt_parse(struct diff_options *, const char **, int);
81extern int diff_setup_done(struct diff_options *);
82
83#define DIFF_DETECT_RENAME 1
84#define DIFF_DETECT_COPY 2
85
86#define DIFF_PICKAXE_ALL 1
87
88extern void diffcore_std(struct diff_options *);
89
90extern void diffcore_std_no_resolve(struct diff_options *);
91
92#define COMMON_DIFF_OPTIONS_HELP \
93"\ncommon diff options:\n" \
94" -r diff recursively (only meaningful in diff-tree)\n" \
95" -z output diff-raw with lines terminated with NUL.\n" \
96" -p output patch format.\n" \
97" -u synonym for -p.\n" \
98" --name-only show only names of changed files.\n" \
99" --name-status show names and status of changed files.\n" \
100" -R swap input file pairs.\n" \
101" -B detect complete rewrites.\n" \
102" -M detect renames.\n" \
103" -C detect copies.\n" \
104" --find-copies-harder\n" \
105" try unchanged files as candidate for copy detection.\n" \
106" -l<n> limit rename attempts up to <n> paths.\n" \
107" -O<file> reorder diffs according to the <file>.\n" \
108" -S<string> find filepair whose only one side contains the string.\n" \
109" --pickaxe-all\n" \
110" show all files diff when -S is used and hit is found.\n"
111
112extern int diff_queue_is_empty(void);
113
114#define DIFF_FORMAT_RAW 1
115#define DIFF_FORMAT_PATCH 2
116#define DIFF_FORMAT_NO_OUTPUT 3
117#define DIFF_FORMAT_NAME 4
118#define DIFF_FORMAT_NAME_STATUS 5
119
120extern void diff_flush(struct diff_options*);
121
122/* diff-raw status letters */
123#define DIFF_STATUS_ADDED 'A'
124#define DIFF_STATUS_COPIED 'C'
125#define DIFF_STATUS_DELETED 'D'
126#define DIFF_STATUS_MODIFIED 'M'
127#define DIFF_STATUS_RENAMED 'R'
128#define DIFF_STATUS_TYPE_CHANGED 'T'
129#define DIFF_STATUS_UNKNOWN 'X'
130#define DIFF_STATUS_UNMERGED 'U'
131
132/* these are not diff-raw status letters proper, but used by
133 * diffcore-filter insn to specify additional restrictions.
134 */
135#define DIFF_STATUS_FILTER_AON '*'
136#define DIFF_STATUS_FILTER_BROKEN 'B'
137
138#endif /* DIFF_H */