Git 2.24-rc0
[git.git] / parse-options-cb.c
blob1240a8514e040954cbc7f091e7053b5c76ac6627
1 #include "git-compat-util.h"
2 #include "parse-options.h"
3 #include "cache.h"
4 #include "commit.h"
5 #include "color.h"
6 #include "string-list.h"
7 #include "argv-array.h"
8 #include "sha1-array.h"
10 /*----- some often used options -----*/
12 int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
14 int v;
16 if (!arg) {
17 v = unset ? 0 : DEFAULT_ABBREV;
18 } else {
19 if (!*arg)
20 return error(_("option `%s' expects a numerical value"),
21 opt->long_name);
22 v = strtol(arg, (char **)&arg, 10);
23 if (*arg)
24 return error(_("option `%s' expects a numerical value"),
25 opt->long_name);
26 if (v && v < MINIMUM_ABBREV)
27 v = MINIMUM_ABBREV;
28 else if (v > the_hash_algo->hexsz)
29 v = the_hash_algo->hexsz;
31 *(int *)(opt->value) = v;
32 return 0;
35 int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
36 int unset)
38 if (unset)
39 arg = "never";
40 if (parse_expiry_date(arg, (timestamp_t *)opt->value))
41 die(_("malformed expiration date '%s'"), arg);
42 return 0;
45 int parse_opt_color_flag_cb(const struct option *opt, const char *arg,
46 int unset)
48 int value;
50 if (!arg)
51 arg = unset ? "never" : (const char *)opt->defval;
52 value = git_config_colorbool(NULL, arg);
53 if (value < 0)
54 return error(_("option `%s' expects \"always\", \"auto\", or \"never\""),
55 opt->long_name);
56 *(int *)opt->value = value;
57 return 0;
60 int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
61 int unset)
63 int *target = opt->value;
65 BUG_ON_OPT_ARG(arg);
67 if (unset)
68 /* --no-quiet, --no-verbose */
69 *target = 0;
70 else if (opt->short_name == 'v') {
71 if (*target >= 0)
72 (*target)++;
73 else
74 *target = 1;
75 } else {
76 if (*target <= 0)
77 (*target)--;
78 else
79 *target = -1;
81 return 0;
84 int parse_opt_commits(const struct option *opt, const char *arg, int unset)
86 struct object_id oid;
87 struct commit *commit;
89 BUG_ON_OPT_NEG(unset);
91 if (!arg)
92 return -1;
93 if (get_oid(arg, &oid))
94 return error("malformed object name %s", arg);
95 commit = lookup_commit_reference(the_repository, &oid);
96 if (!commit)
97 return error("no such commit %s", arg);
98 commit_list_insert(commit, opt->value);
99 return 0;
102 int parse_opt_commit(const struct option *opt, const char *arg, int unset)
104 struct object_id oid;
105 struct commit *commit;
106 struct commit **target = opt->value;
108 if (!arg)
109 return -1;
110 if (get_oid(arg, &oid))
111 return error("malformed object name %s", arg);
112 commit = lookup_commit_reference(the_repository, &oid);
113 if (!commit)
114 return error("no such commit %s", arg);
115 *target = commit;
116 return 0;
119 int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
121 struct object_id oid;
123 if (unset) {
124 oid_array_clear(opt->value);
125 return 0;
127 if (!arg)
128 return -1;
129 if (get_oid(arg, &oid))
130 return error(_("malformed object name '%s'"), arg);
131 oid_array_append(opt->value, &oid);
132 return 0;
135 int parse_opt_object_id(const struct option *opt, const char *arg, int unset)
137 struct object_id oid;
138 struct object_id *target = opt->value;
140 if (unset) {
141 *target = null_oid;
142 return 0;
144 if (!arg)
145 return -1;
146 if (get_oid(arg, &oid))
147 return error(_("malformed object name '%s'"), arg);
148 *target = oid;
149 return 0;
152 int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
154 int *target = opt->value;
156 BUG_ON_OPT_ARG(arg);
158 *target = unset ? 2 : 1;
159 return 0;
162 struct option *parse_options_dup(const struct option *o)
164 struct option *opts;
165 int nr = 0;
167 while (o && o->type != OPTION_END) {
168 nr++;
169 o++;
172 ALLOC_ARRAY(opts, nr + 1);
173 memcpy(opts, o - nr, sizeof(*o) * nr);
174 memset(opts + nr, 0, sizeof(*opts));
175 opts[nr].type = OPTION_END;
176 return opts;
179 struct option *parse_options_concat(struct option *a, struct option *b)
181 struct option *ret;
182 size_t i, a_len = 0, b_len = 0;
184 for (i = 0; a[i].type != OPTION_END; i++)
185 a_len++;
186 for (i = 0; b[i].type != OPTION_END; i++)
187 b_len++;
189 ALLOC_ARRAY(ret, st_add3(a_len, b_len, 1));
190 for (i = 0; i < a_len; i++)
191 ret[i] = a[i];
192 for (i = 0; i < b_len; i++)
193 ret[a_len + i] = b[i];
194 ret[a_len + b_len] = b[b_len]; /* final OPTION_END */
196 return ret;
199 int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
201 struct string_list *v = opt->value;
203 if (unset) {
204 string_list_clear(v, 0);
205 return 0;
208 if (!arg)
209 return -1;
211 string_list_append(v, arg);
212 return 0;
215 int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
217 return 0;
221 * Report that the option is unknown, so that other code can handle
222 * it. This can be used as a callback together with
223 * OPTION_LOWLEVEL_CALLBACK to allow an option to be documented in the
224 * "-h" output even if it's not being handled directly by
225 * parse_options().
227 enum parse_opt_result parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx,
228 const struct option *opt,
229 const char *arg, int unset)
231 BUG_ON_OPT_ARG(arg);
232 return PARSE_OPT_UNKNOWN;
236 * Recreates the command-line option in the strbuf.
238 static int recreate_opt(struct strbuf *sb, const struct option *opt,
239 const char *arg, int unset)
241 strbuf_reset(sb);
243 if (opt->long_name) {
244 strbuf_addstr(sb, unset ? "--no-" : "--");
245 strbuf_addstr(sb, opt->long_name);
246 if (arg) {
247 strbuf_addch(sb, '=');
248 strbuf_addstr(sb, arg);
250 } else if (opt->short_name && !unset) {
251 strbuf_addch(sb, '-');
252 strbuf_addch(sb, opt->short_name);
253 if (arg)
254 strbuf_addstr(sb, arg);
255 } else
256 return -1;
258 return 0;
262 * For an option opt, recreates the command-line option in opt->value which
263 * must be an char* initialized to NULL. This is useful when we need to pass
264 * the command-line option to another command. Since any previous value will be
265 * overwritten, this callback should only be used for options where the last
266 * one wins.
268 int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
270 static struct strbuf sb = STRBUF_INIT;
271 char **opt_value = opt->value;
273 if (recreate_opt(&sb, opt, arg, unset) < 0)
274 return -1;
276 free(*opt_value);
278 *opt_value = strbuf_detach(&sb, NULL);
280 return 0;
284 * For an option opt, recreate the command-line option, appending it to
285 * opt->value which must be a argv_array. This is useful when we need to pass
286 * the command-line option, which can be specified multiple times, to another
287 * command.
289 int parse_opt_passthru_argv(const struct option *opt, const char *arg, int unset)
291 static struct strbuf sb = STRBUF_INIT;
292 struct argv_array *opt_value = opt->value;
294 if (recreate_opt(&sb, opt, arg, unset) < 0)
295 return -1;
297 argv_array_push(opt_value, sb.buf);
299 return 0;