1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
4#ifndef DIFF_H
5#define DIFF_H
6#include "tree-walk.h"
8struct rev_info;
10struct diff_options;
11struct diff_queue_struct;
12typedef 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 *fullpath,
18 unsigned old_dirty_submodule, unsigned new_dirty_submodule);
19typedef void (*add_remove_fn_t)(struct diff_options *options,
21 int addremove, unsigned mode,
22 const unsigned char *sha1,
23 const char *fullpath, unsigned dirty_submodule);
24typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
26 struct diff_options *options, void *data);
27#define DIFF_FORMAT_RAW 0x0001
29#define DIFF_FORMAT_DIFFSTAT 0x0002
30#define DIFF_FORMAT_NUMSTAT 0x0004
31#define DIFF_FORMAT_SUMMARY 0x0008
32#define DIFF_FORMAT_PATCH 0x0010
33#define DIFF_FORMAT_SHORTSTAT 0x0020
34#define DIFF_FORMAT_DIRSTAT 0x0040
35/* These override all above */
37#define DIFF_FORMAT_NAME 0x0100
38#define DIFF_FORMAT_NAME_STATUS 0x0200
39#define DIFF_FORMAT_CHECKDIFF 0x0400
40/* Same as output_format = 0 but we know that -s flag was given
42 * and we should not give default value to output_format.
43 */
44#define DIFF_FORMAT_NO_OUTPUT 0x0800
45#define DIFF_FORMAT_CALLBACK 0x1000
47#define DIFF_OPT_RECURSIVE (1 << 0)
49#define DIFF_OPT_TREE_IN_RECURSIVE (1 << 1)
50#define DIFF_OPT_BINARY (1 << 2)
51#define DIFF_OPT_TEXT (1 << 3)
52#define DIFF_OPT_FULL_INDEX (1 << 4)
53#define DIFF_OPT_SILENT_ON_REMOVE (1 << 5)
54#define DIFF_OPT_FIND_COPIES_HARDER (1 << 6)
55#define DIFF_OPT_FOLLOW_RENAMES (1 << 7)
56#define DIFF_OPT_COLOR_DIFF (1 << 8)
57/* (1 << 9) unused */
58#define DIFF_OPT_HAS_CHANGES (1 << 10)
59#define DIFF_OPT_QUICK (1 << 11)
60#define DIFF_OPT_NO_INDEX (1 << 12)
61#define DIFF_OPT_ALLOW_EXTERNAL (1 << 13)
62#define DIFF_OPT_EXIT_WITH_STATUS (1 << 14)
63#define DIFF_OPT_REVERSE_DIFF (1 << 15)
64#define DIFF_OPT_CHECK_FAILED (1 << 16)
65#define DIFF_OPT_RELATIVE_NAME (1 << 17)
66#define DIFF_OPT_IGNORE_SUBMODULES (1 << 18)
67#define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19)
68#define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20)
69#define DIFF_OPT_ALLOW_TEXTCONV (1 << 21)
70#define DIFF_OPT_DIFF_FROM_CONTENTS (1 << 22)
71#define DIFF_OPT_SUBMODULE_LOG (1 << 23)
72#define DIFF_OPT_DIRTY_SUBMODULES (1 << 24)
73#define DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES (1 << 25)
74#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
76#define DIFF_OPT_SET(opts, flag) ((opts)->flags |= DIFF_OPT_##flag)
77#define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag)
78#define DIFF_XDL_TST(opts, flag) ((opts)->xdl_opts & XDF_##flag)
79#define DIFF_XDL_SET(opts, flag) ((opts)->xdl_opts |= XDF_##flag)
80#define DIFF_XDL_CLR(opts, flag) ((opts)->xdl_opts &= ~XDF_##flag)
81enum diff_words_type {
83 DIFF_WORDS_NONE = 0,
84 DIFF_WORDS_PORCELAIN,
85 DIFF_WORDS_PLAIN,
86 DIFF_WORDS_COLOR
87};
88struct diff_options {
90 const char *filter;
91 const char *orderfile;
92 const char *pickaxe;
93 const char *single_follow;
94 const char *a_prefix, *b_prefix;
95 unsigned flags;
96 int context;
97 int interhunkcontext;
98 int break_opt;
99 int detect_rename;
100 int skip_stat_unmatch;
101 int line_termination;
102 int output_format;
103 int pickaxe_opts;
104 int rename_score;
105 int rename_limit;
106 int warn_on_too_large_rename;
107 int dirstat_percent;
108 int setup;
109 int abbrev;
110 const char *prefix;
111 int prefix_length;
112 const char *stat_sep;
113 long xdl_opts;
114 int stat_width;
116 int stat_name_width;
117 const char *word_regex;
118 enum diff_words_type word_diff;
119 /* this is set by diffcore for DIFF_FORMAT_PATCH */
121 int found_changes;
122 FILE *file;
124 int close_file;
125 int nr_paths;
127 const char **paths;
128 int *pathlens;
129 change_fn_t change;
130 add_remove_fn_t add_remove;
131 diff_format_fn_t format_callback;
132 void *format_callback_data;
133};
134enum color_diff {
136 DIFF_RESET = 0,
137 DIFF_PLAIN = 1,
138 DIFF_METAINFO = 2,
139 DIFF_FRAGINFO = 3,
140 DIFF_FILE_OLD = 4,
141 DIFF_FILE_NEW = 5,
142 DIFF_COMMIT = 6,
143 DIFF_WHITESPACE = 7,
144 DIFF_FUNCINFO = 8,
145};
146const char *diff_get_color(int diff_use_color, enum color_diff ix);
147#define diff_get_color_opt(o, ix) \
148 diff_get_color(DIFF_OPT_TST((o), COLOR_DIFF), ix)
149extern const char mime_boundary_leader[];
152extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
154extern void diff_tree_release_paths(struct diff_options *);
155extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
156 const char *base, struct diff_options *opt);
157extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
158 const char *base, struct diff_options *opt);
159extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
160 struct diff_options *opt);
161struct combine_diff_path {
163 struct combine_diff_path *next;
164 int len;
165 char *path;
166 unsigned int mode;
167 unsigned char sha1[20];
168 struct combine_diff_parent {
169 char status;
170 unsigned int mode;
171 unsigned char sha1[20];
172 } parent[FLEX_ARRAY];
173};
174#define combine_diff_path_size(n, l) \
175 (sizeof(struct combine_diff_path) + \
176 sizeof(struct combine_diff_parent) * (n) + (l) + 1)
177extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
179 int dense, struct rev_info *);
180extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
182extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
184void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b);
186extern void diff_addremove(struct diff_options *,
188 int addremove,
189 unsigned mode,
190 const unsigned char *sha1,
191 const char *fullpath, unsigned dirty_submodule);
192extern void diff_change(struct diff_options *,
194 unsigned mode1, unsigned mode2,
195 const unsigned char *sha1,
196 const unsigned char *sha2,
197 const char *fullpath,
198 unsigned dirty_submodule1, unsigned dirty_submodule2);
199extern void diff_unmerge(struct diff_options *,
201 const char *path,
202 unsigned mode,
203 const unsigned char *sha1);
204#define DIFF_SETUP_REVERSE 1
206#define DIFF_SETUP_USE_CACHE 2
207#define DIFF_SETUP_USE_SIZE_CACHE 4
208extern int git_diff_basic_config(const char *var, const char *value, void *cb);
210extern int git_diff_ui_config(const char *var, const char *value, void *cb);
211extern int diff_use_color_default;
212extern void diff_setup(struct diff_options *);
213extern int diff_opt_parse(struct diff_options *, const char **, int);
214extern int diff_setup_done(struct diff_options *);
215#define DIFF_DETECT_RENAME 1
217#define DIFF_DETECT_COPY 2
218#define DIFF_PICKAXE_ALL 1
220#define DIFF_PICKAXE_REGEX 2
221extern void diffcore_std(struct diff_options *);
223extern void diffcore_fix_diff_index(struct diff_options *);
224#define COMMON_DIFF_OPTIONS_HELP \
226"\ncommon diff options:\n" \
227" -z output diff-raw with lines terminated with NUL.\n" \
228" -p output patch format.\n" \
229" -u synonym for -p.\n" \
230" --patch-with-raw\n" \
231" output both a patch and the diff-raw format.\n" \
232" --stat show diffstat instead of patch.\n" \
233" --numstat show numeric diffstat instead of patch.\n" \
234" --patch-with-stat\n" \
235" output a patch and prepend its diffstat.\n" \
236" --name-only show only names of changed files.\n" \
237" --name-status show names and status of changed files.\n" \
238" --full-index show full object name on index lines.\n" \
239" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \
240" -R swap input file pairs.\n" \
241" -B detect complete rewrites.\n" \
242" -M detect renames.\n" \
243" -C detect copies.\n" \
244" --find-copies-harder\n" \
245" try unchanged files as candidate for copy detection.\n" \
246" -l<n> limit rename attempts up to <n> paths.\n" \
247" -O<file> reorder diffs according to the <file>.\n" \
248" -S<string> find filepair whose only one side contains the string.\n" \
249" --pickaxe-all\n" \
250" show all files diff when -S is used and hit is found.\n" \
251" -a --text treat all files as text.\n"
252extern int diff_queue_is_empty(void);
254extern void diff_flush(struct diff_options*);
255/* diff-raw status letters */
257#define DIFF_STATUS_ADDED 'A'
258#define DIFF_STATUS_COPIED 'C'
259#define DIFF_STATUS_DELETED 'D'
260#define DIFF_STATUS_MODIFIED 'M'
261#define DIFF_STATUS_RENAMED 'R'
262#define DIFF_STATUS_TYPE_CHANGED 'T'
263#define DIFF_STATUS_UNKNOWN 'X'
264#define DIFF_STATUS_UNMERGED 'U'
265/* these are not diff-raw status letters proper, but used by
267 * diffcore-filter insn to specify additional restrictions.
268 */
269#define DIFF_STATUS_FILTER_AON '*'
270#define DIFF_STATUS_FILTER_BROKEN 'B'
271extern const char *diff_unique_abbrev(const unsigned char *, int);
273/* do not report anything on removed paths */
275#define DIFF_SILENT_ON_REMOVED 01
276/* report racily-clean paths as modified */
277#define DIFF_RACY_IS_MODIFIED 02
278extern int run_diff_files(struct rev_info *revs, unsigned int option);
279extern int run_diff_index(struct rev_info *revs, int cached);
280extern int do_diff_cache(const unsigned char *, struct diff_options *);
282extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
283extern int diff_result_code(struct diff_options *, int);
285extern void diff_no_index(struct rev_info *, int, const char **, int, const char *);
287extern int index_differs_from(const char *def, int diff_flags);
289#endif /* DIFF_H */