promisor-remote: skip move_to_tail when no-op
[git/git.git] / builtin.h
1 #ifndef BUILTIN_H
2 #define BUILTIN_H
3
4 #include "git-compat-util.h"
5 #include "strbuf.h"
6 #include "cache.h"
7 #include "commit.h"
8
9 /*
10 * builtin API
11 * ===========
12 *
13 * Adding a new built-in
14 * ---------------------
15 *
16 * There are 4 things to do to add a built-in command implementation to
17 * Git:
18 *
19 * . Define the implementation of the built-in command `foo` with
20 * signature:
21 *
22 * int cmd_foo(int argc, const char **argv, const char *prefix);
23 *
24 * . Add the external declaration for the function to `builtin.h`.
25 *
26 * . Add the command to the `commands[]` table defined in `git.c`.
27 * The entry should look like:
28 *
29 * { "foo", cmd_foo, <options> },
30 *
31 * where options is the bitwise-or of:
32 *
33 * `RUN_SETUP`:
34 * If there is not a Git directory to work on, abort. If there
35 * is a work tree, chdir to the top of it if the command was
36 * invoked in a subdirectory. If there is no work tree, no
37 * chdir() is done.
38 *
39 * `RUN_SETUP_GENTLY`:
40 * If there is a Git directory, chdir as per RUN_SETUP, otherwise,
41 * don't chdir anywhere.
42 *
43 * `USE_PAGER`:
44 *
45 * If the standard output is connected to a tty, spawn a pager and
46 * feed our output to it.
47 *
48 * `NEED_WORK_TREE`:
49 *
50 * Make sure there is a work tree, i.e. the command cannot act
51 * on bare repositories.
52 * This only makes sense when `RUN_SETUP` is also set.
53 *
54 * `SUPPORT_SUPER_PREFIX`:
55 *
56 * The built-in supports `--super-prefix`.
57 *
58 * `DELAY_PAGER_CONFIG`:
59 *
60 * If RUN_SETUP or RUN_SETUP_GENTLY is set, git.c normally handles
61 * the `pager.<cmd>`-configuration. If this flag is used, git.c
62 * will skip that step, instead allowing the built-in to make a
63 * more informed decision, e.g., by ignoring `pager.<cmd>` for
64 * certain subcommands.
65 *
66 * . Add `builtin/foo.o` to `BUILTIN_OBJS` in `Makefile`.
67 *
68 * Additionally, if `foo` is a new command, there are 4 more things to do:
69 *
70 * . Add tests to `t/` directory.
71 *
72 * . Write documentation in `Documentation/git-foo.txt`.
73 *
74 * . Add an entry for `git-foo` to `command-list.txt`.
75 *
76 * . Add an entry for `/git-foo` to `.gitignore`.
77 *
78 *
79 * How a built-in is called
80 * ------------------------
81 *
82 * The implementation `cmd_foo()` takes three parameters, `argc`, `argv,
83 * and `prefix`. The first two are similar to what `main()` of a
84 * standalone command would be called with.
85 *
86 * When `RUN_SETUP` is specified in the `commands[]` table, and when you
87 * were started from a subdirectory of the work tree, `cmd_foo()` is called
88 * after chdir(2) to the top of the work tree, and `prefix` gets the path
89 * to the subdirectory the command started from. This allows you to
90 * convert a user-supplied pathname (typically relative to that directory)
91 * to a pathname relative to the top of the work tree.
92 *
93 * The return value from `cmd_foo()` becomes the exit status of the
94 * command.
95 */
96
97 #define DEFAULT_MERGE_LOG_LEN 20
98
99 extern const char git_usage_string[];
100 extern const char git_more_info_string[];
101
102 #define PRUNE_PACKED_DRY_RUN 01
103 #define PRUNE_PACKED_VERBOSE 02
104
105 void prune_packed_objects(int);
106
107 struct fmt_merge_msg_opts {
108 unsigned add_title:1,
109 credit_people:1;
110 int shortlog_len;
111 };
112
113 int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
114 struct fmt_merge_msg_opts *);
115
116 /**
117 * If a built-in has DELAY_PAGER_CONFIG set, the built-in should call this early
118 * when it wishes to respect the `pager.foo`-config. The `cmd` is the name of
119 * the built-in, e.g., "foo". If a paging-choice has already been setup, this
120 * does nothing. The default in `def` should be 0 for "pager off", 1 for "pager
121 * on" or -1 for "punt".
122 *
123 * You should most likely use a default of 0 or 1. "Punt" (-1) could be useful
124 * to be able to fall back to some historical compatibility name.
125 */
126 void setup_auto_pager(const char *cmd, int def);
127
128 int is_builtin(const char *s);
129
130 int cmd_add(int argc, const char **argv, const char *prefix);
131 int cmd_am(int argc, const char **argv, const char *prefix);
132 int cmd_annotate(int argc, const char **argv, const char *prefix);
133 int cmd_apply(int argc, const char **argv, const char *prefix);
134 int cmd_archive(int argc, const char **argv, const char *prefix);
135 int cmd_bisect__helper(int argc, const char **argv, const char *prefix);
136 int cmd_blame(int argc, const char **argv, const char *prefix);
137 int cmd_branch(int argc, const char **argv, const char *prefix);
138 int cmd_bundle(int argc, const char **argv, const char *prefix);
139 int cmd_cat_file(int argc, const char **argv, const char *prefix);
140 int cmd_checkout(int argc, const char **argv, const char *prefix);
141 int cmd_checkout_index(int argc, const char **argv, const char *prefix);
142 int cmd_check_attr(int argc, const char **argv, const char *prefix);
143 int cmd_check_ignore(int argc, const char **argv, const char *prefix);
144 int cmd_check_mailmap(int argc, const char **argv, const char *prefix);
145 int cmd_check_ref_format(int argc, const char **argv, const char *prefix);
146 int cmd_cherry(int argc, const char **argv, const char *prefix);
147 int cmd_cherry_pick(int argc, const char **argv, const char *prefix);
148 int cmd_clone(int argc, const char **argv, const char *prefix);
149 int cmd_clean(int argc, const char **argv, const char *prefix);
150 int cmd_column(int argc, const char **argv, const char *prefix);
151 int cmd_commit(int argc, const char **argv, const char *prefix);
152 int cmd_commit_graph(int argc, const char **argv, const char *prefix);
153 int cmd_commit_tree(int argc, const char **argv, const char *prefix);
154 int cmd_config(int argc, const char **argv, const char *prefix);
155 int cmd_count_objects(int argc, const char **argv, const char *prefix);
156 int cmd_credential(int argc, const char **argv, const char *prefix);
157 int cmd_describe(int argc, const char **argv, const char *prefix);
158 int cmd_diff_files(int argc, const char **argv, const char *prefix);
159 int cmd_diff_index(int argc, const char **argv, const char *prefix);
160 int cmd_diff(int argc, const char **argv, const char *prefix);
161 int cmd_diff_tree(int argc, const char **argv, const char *prefix);
162 int cmd_difftool(int argc, const char **argv, const char *prefix);
163 int cmd_fast_export(int argc, const char **argv, const char *prefix);
164 int cmd_fetch(int argc, const char **argv, const char *prefix);
165 int cmd_fetch_pack(int argc, const char **argv, const char *prefix);
166 int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix);
167 int cmd_for_each_ref(int argc, const char **argv, const char *prefix);
168 int cmd_format_patch(int argc, const char **argv, const char *prefix);
169 int cmd_fsck(int argc, const char **argv, const char *prefix);
170 int cmd_gc(int argc, const char **argv, const char *prefix);
171 int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix);
172 int cmd_grep(int argc, const char **argv, const char *prefix);
173 int cmd_hash_object(int argc, const char **argv, const char *prefix);
174 int cmd_help(int argc, const char **argv, const char *prefix);
175 int cmd_index_pack(int argc, const char **argv, const char *prefix);
176 int cmd_init_db(int argc, const char **argv, const char *prefix);
177 int cmd_interpret_trailers(int argc, const char **argv, const char *prefix);
178 int cmd_log(int argc, const char **argv, const char *prefix);
179 int cmd_log_reflog(int argc, const char **argv, const char *prefix);
180 int cmd_ls_files(int argc, const char **argv, const char *prefix);
181 int cmd_ls_tree(int argc, const char **argv, const char *prefix);
182 int cmd_ls_remote(int argc, const char **argv, const char *prefix);
183 int cmd_mailinfo(int argc, const char **argv, const char *prefix);
184 int cmd_mailsplit(int argc, const char **argv, const char *prefix);
185 int cmd_merge(int argc, const char **argv, const char *prefix);
186 int cmd_merge_base(int argc, const char **argv, const char *prefix);
187 int cmd_merge_index(int argc, const char **argv, const char *prefix);
188 int cmd_merge_ours(int argc, const char **argv, const char *prefix);
189 int cmd_merge_file(int argc, const char **argv, const char *prefix);
190 int cmd_merge_recursive(int argc, const char **argv, const char *prefix);
191 int cmd_merge_tree(int argc, const char **argv, const char *prefix);
192 int cmd_mktag(int argc, const char **argv, const char *prefix);
193 int cmd_mktree(int argc, const char **argv, const char *prefix);
194 int cmd_multi_pack_index(int argc, const char **argv, const char *prefix);
195 int cmd_mv(int argc, const char **argv, const char *prefix);
196 int cmd_name_rev(int argc, const char **argv, const char *prefix);
197 int cmd_notes(int argc, const char **argv, const char *prefix);
198 int cmd_pack_objects(int argc, const char **argv, const char *prefix);
199 int cmd_pack_redundant(int argc, const char **argv, const char *prefix);
200 int cmd_patch_id(int argc, const char **argv, const char *prefix);
201 int cmd_prune(int argc, const char **argv, const char *prefix);
202 int cmd_prune_packed(int argc, const char **argv, const char *prefix);
203 int cmd_pull(int argc, const char **argv, const char *prefix);
204 int cmd_push(int argc, const char **argv, const char *prefix);
205 int cmd_range_diff(int argc, const char **argv, const char *prefix);
206 int cmd_read_tree(int argc, const char **argv, const char *prefix);
207 int cmd_rebase(int argc, const char **argv, const char *prefix);
208 int cmd_rebase__interactive(int argc, const char **argv, const char *prefix);
209 int cmd_receive_pack(int argc, const char **argv, const char *prefix);
210 int cmd_reflog(int argc, const char **argv, const char *prefix);
211 int cmd_remote(int argc, const char **argv, const char *prefix);
212 int cmd_remote_ext(int argc, const char **argv, const char *prefix);
213 int cmd_remote_fd(int argc, const char **argv, const char *prefix);
214 int cmd_repack(int argc, const char **argv, const char *prefix);
215 int cmd_rerere(int argc, const char **argv, const char *prefix);
216 int cmd_reset(int argc, const char **argv, const char *prefix);
217 int cmd_rev_list(int argc, const char **argv, const char *prefix);
218 int cmd_rev_parse(int argc, const char **argv, const char *prefix);
219 int cmd_revert(int argc, const char **argv, const char *prefix);
220 int cmd_rm(int argc, const char **argv, const char *prefix);
221 int cmd_send_pack(int argc, const char **argv, const char *prefix);
222 int cmd_shortlog(int argc, const char **argv, const char *prefix);
223 int cmd_show(int argc, const char **argv, const char *prefix);
224 int cmd_show_branch(int argc, const char **argv, const char *prefix);
225 int cmd_show_index(int argc, const char **argv, const char *prefix);
226 int cmd_status(int argc, const char **argv, const char *prefix);
227 int cmd_stash(int argc, const char **argv, const char *prefix);
228 int cmd_stripspace(int argc, const char **argv, const char *prefix);
229 int cmd_submodule__helper(int argc, const char **argv, const char *prefix);
230 int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);
231 int cmd_tag(int argc, const char **argv, const char *prefix);
232 int cmd_tar_tree(int argc, const char **argv, const char *prefix);
233 int cmd_unpack_file(int argc, const char **argv, const char *prefix);
234 int cmd_unpack_objects(int argc, const char **argv, const char *prefix);
235 int cmd_update_index(int argc, const char **argv, const char *prefix);
236 int cmd_update_ref(int argc, const char **argv, const char *prefix);
237 int cmd_update_server_info(int argc, const char **argv, const char *prefix);
238 int cmd_upload_archive(int argc, const char **argv, const char *prefix);
239 int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix);
240 int cmd_upload_pack(int argc, const char **argv, const char *prefix);
241 int cmd_var(int argc, const char **argv, const char *prefix);
242 int cmd_verify_commit(int argc, const char **argv, const char *prefix);
243 int cmd_verify_tag(int argc, const char **argv, const char *prefix);
244 int cmd_version(int argc, const char **argv, const char *prefix);
245 int cmd_whatchanged(int argc, const char **argv, const char *prefix);
246 int cmd_worktree(int argc, const char **argv, const char *prefix);
247 int cmd_write_tree(int argc, const char **argv, const char *prefix);
248 int cmd_verify_pack(int argc, const char **argv, const char *prefix);
249 int cmd_show_ref(int argc, const char **argv, const char *prefix);
250 int cmd_pack_refs(int argc, const char **argv, const char *prefix);
251 int cmd_replace(int argc, const char **argv, const char *prefix);
252
253 #endif