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 "strvec.h"
8 #include "oid-array.h"
9
10 /*----- some often used options -----*/
11
parse_opt_abbrev_cb(const struct option * opt,const char * arg,int unset)12 int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
13 {
14 int v;
15
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;
30 }
31 *(int *)(opt->value) = v;
32 return 0;
33 }
34
parse_opt_expiry_date_cb(const struct option * opt,const char * arg,int unset)35 int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
36 int unset)
37 {
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;
43 }
44
parse_opt_color_flag_cb(const struct option * opt,const char * arg,int unset)45 int parse_opt_color_flag_cb(const struct option *opt, const char *arg,
46 int unset)
47 {
48 int value;
49
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;
58 }
59
parse_opt_verbosity_cb(const struct option * opt,const char * arg,int unset)60 int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
61 int unset)
62 {
63 int *target = opt->value;
64
65 BUG_ON_OPT_ARG(arg);
66
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;
80 }
81 return 0;
82 }
83
parse_opt_commits(const struct option * opt,const char * arg,int unset)84 int parse_opt_commits(const struct option *opt, const char *arg, int unset)
85 {
86 struct object_id oid;
87 struct commit *commit;
88
89 BUG_ON_OPT_NEG(unset);
90
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;
100 }
101
parse_opt_commit(const struct option * opt,const char * arg,int unset)102 int parse_opt_commit(const struct option *opt, const char *arg, int unset)
103 {
104 struct object_id oid;
105 struct commit *commit;
106 struct commit **target = opt->value;
107
108 BUG_ON_OPT_NEG(unset);
109
110 if (!arg)
111 return -1;
112 if (get_oid(arg, &oid))
113 return error("malformed object name %s", arg);
114 commit = lookup_commit_reference(the_repository, &oid);
115 if (!commit)
116 return error("no such commit %s", arg);
117 *target = commit;
118 return 0;
119 }
120
parse_opt_object_name(const struct option * opt,const char * arg,int unset)121 int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
122 {
123 struct object_id oid;
124
125 if (unset) {
126 oid_array_clear(opt->value);
127 return 0;
128 }
129 if (!arg)
130 return -1;
131 if (get_oid(arg, &oid))
132 return error(_("malformed object name '%s'"), arg);
133 oid_array_append(opt->value, &oid);
134 return 0;
135 }
136
parse_opt_object_id(const struct option * opt,const char * arg,int unset)137 int parse_opt_object_id(const struct option *opt, const char *arg, int unset)
138 {
139 struct object_id oid;
140 struct object_id *target = opt->value;
141
142 if (unset) {
143 oidcpy(target, null_oid());
144 return 0;
145 }
146 if (!arg)
147 return -1;
148 if (get_oid(arg, &oid))
149 return error(_("malformed object name '%s'"), arg);
150 *target = oid;
151 return 0;
152 }
153
parse_opt_tertiary(const struct option * opt,const char * arg,int unset)154 int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
155 {
156 int *target = opt->value;
157
158 BUG_ON_OPT_ARG(arg);
159
160 *target = unset ? 2 : 1;
161 return 0;
162 }
163
parse_options_count(const struct option * opt)164 static size_t parse_options_count(const struct option *opt)
165 {
166 size_t n = 0;
167
168 for (; opt && opt->type != OPTION_END; opt++)
169 n++;
170 return n;
171 }
172
parse_options_dup(const struct option * o)173 struct option *parse_options_dup(const struct option *o)
174 {
175 struct option no_options[] = { OPT_END() };
176
177 return parse_options_concat(o, no_options);
178 }
179
parse_options_concat(const struct option * a,const struct option * b)180 struct option *parse_options_concat(const struct option *a,
181 const struct option *b)
182 {
183 struct option *ret;
184 size_t a_len = parse_options_count(a);
185 size_t b_len = parse_options_count(b);
186
187 ALLOC_ARRAY(ret, st_add3(a_len, b_len, 1));
188 COPY_ARRAY(ret, a, a_len);
189 COPY_ARRAY(ret + a_len, b, b_len + 1); /* + 1 for final OPTION_END */
190
191 return ret;
192 }
193
parse_opt_string_list(const struct option * opt,const char * arg,int unset)194 int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
195 {
196 struct string_list *v = opt->value;
197
198 if (unset) {
199 string_list_clear(v, 0);
200 return 0;
201 }
202
203 if (!arg)
204 return -1;
205
206 string_list_append(v, arg);
207 return 0;
208 }
209
parse_opt_noop_cb(const struct option * opt,const char * arg,int unset)210 int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
211 {
212 return 0;
213 }
214
215 /**
216 * Report that the option is unknown, so that other code can handle
217 * it. This can be used as a callback together with
218 * OPTION_LOWLEVEL_CALLBACK to allow an option to be documented in the
219 * "-h" output even if it's not being handled directly by
220 * parse_options().
221 */
parse_opt_unknown_cb(struct parse_opt_ctx_t * ctx,const struct option * opt,const char * arg,int unset)222 enum parse_opt_result parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx,
223 const struct option *opt,
224 const char *arg, int unset)
225 {
226 BUG_ON_OPT_ARG(arg);
227 return PARSE_OPT_UNKNOWN;
228 }
229
230 /**
231 * Recreates the command-line option in the strbuf.
232 */
recreate_opt(struct strbuf * sb,const struct option * opt,const char * arg,int unset)233 static int recreate_opt(struct strbuf *sb, const struct option *opt,
234 const char *arg, int unset)
235 {
236 strbuf_reset(sb);
237
238 if (opt->long_name) {
239 strbuf_addstr(sb, unset ? "--no-" : "--");
240 strbuf_addstr(sb, opt->long_name);
241 if (arg) {
242 strbuf_addch(sb, '=');
243 strbuf_addstr(sb, arg);
244 }
245 } else if (opt->short_name && !unset) {
246 strbuf_addch(sb, '-');
247 strbuf_addch(sb, opt->short_name);
248 if (arg)
249 strbuf_addstr(sb, arg);
250 } else
251 return -1;
252
253 return 0;
254 }
255
256 /**
257 * For an option opt, recreates the command-line option in opt->value which
258 * must be an char* initialized to NULL. This is useful when we need to pass
259 * the command-line option to another command. Since any previous value will be
260 * overwritten, this callback should only be used for options where the last
261 * one wins.
262 */
parse_opt_passthru(const struct option * opt,const char * arg,int unset)263 int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
264 {
265 static struct strbuf sb = STRBUF_INIT;
266 char **opt_value = opt->value;
267
268 if (recreate_opt(&sb, opt, arg, unset) < 0)
269 return -1;
270
271 free(*opt_value);
272
273 *opt_value = strbuf_detach(&sb, NULL);
274
275 return 0;
276 }
277
278 /**
279 * For an option opt, recreate the command-line option, appending it to
280 * opt->value which must be a strvec. This is useful when we need to pass
281 * the command-line option, which can be specified multiple times, to another
282 * command.
283 */
parse_opt_passthru_argv(const struct option * opt,const char * arg,int unset)284 int parse_opt_passthru_argv(const struct option *opt, const char *arg, int unset)
285 {
286 static struct strbuf sb = STRBUF_INIT;
287 struct strvec *opt_value = opt->value;
288
289 if (recreate_opt(&sb, opt, arg, unset) < 0)
290 return -1;
291
292 strvec_push(opt_value, sb.buf);
293
294 return 0;
295 }
296