1 #ifndef PARSE_OPTIONS_H
2 #define PARSE_OPTIONS_H
10 /* options with no arguments */
16 /* options with arguments (usually) */
21 OPTION_LOWLEVEL_CALLBACK
,
25 enum parse_opt_flags
{
26 PARSE_OPT_KEEP_DASHDASH
= 1,
27 PARSE_OPT_STOP_AT_NON_OPTION
= 2,
28 PARSE_OPT_KEEP_ARGV0
= 4,
29 PARSE_OPT_KEEP_UNKNOWN
= 8,
30 PARSE_OPT_NO_INTERNAL_HELP
= 16,
31 PARSE_OPT_ONE_SHOT
= 32
34 enum parse_opt_option_flags
{
39 PARSE_OPT_LASTARG_DEFAULT
= 16,
40 PARSE_OPT_NODASH
= 32,
41 PARSE_OPT_LITERAL_ARGHELP
= 64,
42 PARSE_OPT_SHELL_EVAL
= 256,
43 PARSE_OPT_NOCOMPLETE
= 512,
44 PARSE_OPT_COMP_ARG
= 1024
48 typedef int parse_opt_cb(const struct option
*, const char *arg
, int unset
);
50 struct parse_opt_ctx_t
;
51 typedef int parse_opt_ll_cb(struct parse_opt_ctx_t
*ctx
,
52 const struct option
*opt
, int unset
);
56 * holds the type of the option, you must have an OPTION_END last in your
60 * the character to use as a short option name, '\0' if none.
63 * the long option name, without the leading dashes, NULL if none.
66 * stores pointers to the values to be filled.
69 * token to explain the kind of argument this option wants. Keep it
70 * homogeneous across the repository. Should be wrapped by N_() for
74 * the short help associated to what the option does.
75 * Must never be NULL (except for OPTION_END).
76 * OPTION_GROUP uses this pointer to store the group header.
77 * Should be wrapped by N_() for translation.
80 * mask of parse_opt_option_flags.
81 * PARSE_OPT_OPTARG: says that the argument is optional (not for BOOLEANs)
82 * PARSE_OPT_NOARG: says that this option does not take an argument
83 * PARSE_OPT_NONEG: says that this option cannot be negated
84 * PARSE_OPT_HIDDEN: this option is skipped in the default usage, and
85 * shown only in the full usage.
86 * PARSE_OPT_LASTARG_DEFAULT: says that this option will take the default
87 * value if no argument is given when the option
88 * is last on the command line. If the option is
89 * not last it will require an argument.
90 * Should not be used with PARSE_OPT_OPTARG.
91 * PARSE_OPT_NODASH: this option doesn't start with a dash.
92 * PARSE_OPT_LITERAL_ARGHELP: says that argh shouldn't be enclosed in brackets
93 * (i.e. '<argh>') in the help message.
94 * Useful for options with multiple parameters.
95 * PARSE_OPT_NOCOMPLETE: by default all visible options are completable
96 * by git-completion.bash. This option suppresses that.
97 * PARSE_OPT_COMP_ARG: this option forces to git-completion.bash to
98 * complete an option as --name= not --name even if
99 * the option takes optional argument.
102 * pointer to the callback to use for OPTION_CALLBACK or
103 * OPTION_LOWLEVEL_CALLBACK.
106 * default value to fill (*->value) with for PARSE_OPT_OPTARG.
107 * OPTION_{BIT,SET_INT} store the {mask,integer} to put in the value when met.
108 * CALLBACKS can use it like they want.
111 enum parse_opt_type type
;
113 const char *long_name
;
119 parse_opt_cb
*callback
;
123 #define OPT_BIT_F(s, l, v, h, b, f) { OPTION_BIT, (s), (l), (v), NULL, (h), \
124 PARSE_OPT_NOARG|(f), NULL, (b) }
125 #define OPT_COUNTUP_F(s, l, v, h, f) { OPTION_COUNTUP, (s), (l), (v), NULL, \
126 (h), PARSE_OPT_NOARG|(f) }
127 #define OPT_SET_INT_F(s, l, v, h, i, f) { OPTION_SET_INT, (s), (l), (v), NULL, \
128 (h), PARSE_OPT_NOARG | (f), NULL, (i) }
129 #define OPT_BOOL_F(s, l, v, h, f) OPT_SET_INT_F(s, l, v, h, 1, f)
131 #define OPT_END() { OPTION_END }
132 #define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, \
133 (h), PARSE_OPT_NOARG}
134 #define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
135 #define OPT_BIT(s, l, v, h, b) OPT_BIT_F(s, l, v, h, b, 0)
136 #define OPT_NEGBIT(s, l, v, h, b) { OPTION_NEGBIT, (s), (l), (v), NULL, \
137 (h), PARSE_OPT_NOARG, NULL, (b) }
138 #define OPT_COUNTUP(s, l, v, h) OPT_COUNTUP_F(s, l, v, h, 0)
139 #define OPT_SET_INT(s, l, v, h, i) OPT_SET_INT_F(s, l, v, h, i, 0)
140 #define OPT_BOOL(s, l, v, h) OPT_BOOL_F(s, l, v, h, 0)
141 #define OPT_HIDDEN_BOOL(s, l, v, h) { OPTION_SET_INT, (s), (l), (v), NULL, \
142 (h), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1}
143 #define OPT_CMDMODE(s, l, v, h, i) { OPTION_CMDMODE, (s), (l), (v), NULL, \
144 (h), PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, (i) }
145 #define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), N_("n"), (h) }
146 #define OPT_MAGNITUDE(s, l, v, h) { OPTION_MAGNITUDE, (s), (l), (v), \
147 N_("n"), (h), PARSE_OPT_NONEG }
148 #define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v), (a), (h) }
149 #define OPT_STRING_LIST(s, l, v, a, h) \
150 { OPTION_CALLBACK, (s), (l), (v), (a), \
151 (h), 0, &parse_opt_string_list }
152 #define OPT_UYN(s, l, v, h) { OPTION_CALLBACK, (s), (l), (v), NULL, \
153 (h), PARSE_OPT_NOARG, &parse_opt_tertiary }
154 #define OPT_EXPIRY_DATE(s, l, v, h) \
155 { OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0, \
156 parse_opt_expiry_date_cb }
157 #define OPT_CALLBACK(s, l, v, a, h, f) \
158 { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
159 #define OPT_NUMBER_CALLBACK(v, h, f) \
160 { OPTION_NUMBER, 0, NULL, (v), NULL, (h), \
161 PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) }
162 #define OPT_FILENAME(s, l, v, h) { OPTION_FILENAME, (s), (l), (v), \
164 #define OPT_COLOR_FLAG(s, l, v, h) \
165 { OPTION_CALLBACK, (s), (l), (v), N_("when"), (h), PARSE_OPT_OPTARG, \
166 parse_opt_color_flag_cb, (intptr_t)"always" }
168 #define OPT_NOOP_NOARG(s, l) \
169 { OPTION_CALLBACK, (s), (l), NULL, NULL, \
170 N_("no-op (backward compatibility)"), \
171 PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, parse_opt_noop_cb }
174 * parse_options() will filter out the processed options and leave the
175 * non-option arguments in argv[]. argv0 is assumed program name and
178 * usagestr strings should be marked for translation with N_().
180 * Returns the number of arguments left in argv[].
182 * In one-shot mode, argv0 is not a program name, argv[] is left
183 * untouched and parse_options() returns the number of options
186 int parse_options(int argc
, const char **argv
, const char *prefix
,
187 const struct option
*options
,
188 const char * const usagestr
[], int flags
);
190 NORETURN
void usage_with_options(const char * const *usagestr
,
191 const struct option
*options
);
193 NORETURN
void usage_msg_opt(const char *msg
,
194 const char * const *usagestr
,
195 const struct option
*options
);
197 int optbug(const struct option
*opt
, const char *reason
);
198 const char *optname(const struct option
*opt
, int flags
);
201 * Use these assertions for callbacks that expect to be called with NONEG and
202 * NOARG respectively, and do not otherwise handle the "unset" and "arg"
205 #define BUG_ON_OPT_NEG(unset) do { \
207 BUG("option callback does not expect negation"); \
209 #define BUG_ON_OPT_ARG(arg) do { \
211 BUG("option callback does not expect an argument"); \
214 /*----- incremental advanced APIs -----*/
217 PARSE_OPT_COMPLETE
= -2,
220 PARSE_OPT_NON_OPTION
,
226 * It's okay for the caller to consume argv/argc in the usual way.
227 * Other fields of that structure are private to parse-options and should not
228 * be modified in any way.
230 struct parse_opt_ctx_t
{
233 int argc
, cpidx
, total
;
239 void parse_options_start(struct parse_opt_ctx_t
*ctx
,
240 int argc
, const char **argv
, const char *prefix
,
241 const struct option
*options
, int flags
);
243 int parse_options_step(struct parse_opt_ctx_t
*ctx
,
244 const struct option
*options
,
245 const char * const usagestr
[]);
247 int parse_options_end(struct parse_opt_ctx_t
*ctx
);
249 struct option
*parse_options_concat(struct option
*a
, struct option
*b
);
251 /*----- some often used options -----*/
252 int parse_opt_abbrev_cb(const struct option
*, const char *, int);
253 int parse_opt_expiry_date_cb(const struct option
*, const char *, int);
254 int parse_opt_color_flag_cb(const struct option
*, const char *, int);
255 int parse_opt_verbosity_cb(const struct option
*, const char *, int);
256 int parse_opt_object_name(const struct option
*, const char *, int);
257 int parse_opt_commits(const struct option
*, const char *, int);
258 int parse_opt_tertiary(const struct option
*, const char *, int);
259 int parse_opt_string_list(const struct option
*, const char *, int);
260 int parse_opt_noop_cb(const struct option
*, const char *, int);
261 int parse_opt_unknown_cb(const struct option
*, const char *, int);
262 int parse_opt_passthru(const struct option
*, const char *, int);
263 int parse_opt_passthru_argv(const struct option
*, const char *, int);
265 #define OPT__VERBOSE(var, h) OPT_COUNTUP('v', "verbose", (var), (h))
266 #define OPT__QUIET(var, h) OPT_COUNTUP('q', "quiet", (var), (h))
267 #define OPT__VERBOSITY(var) \
268 { OPTION_CALLBACK, 'v', "verbose", (var), NULL, N_("be more verbose"), \
269 PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \
270 { OPTION_CALLBACK, 'q', "quiet", (var), NULL, N_("be more quiet"), \
271 PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }
272 #define OPT__DRY_RUN(var, h) OPT_BOOL('n', "dry-run", (var), (h))
273 #define OPT__FORCE(var, h, f) OPT_COUNTUP_F('f', "force", (var), (h), (f))
274 #define OPT__ABBREV(var) \
275 { OPTION_CALLBACK, 0, "abbrev", (var), N_("n"), \
276 N_("use <n> digits to display SHA-1s"), \
277 PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 }
278 #define OPT__COLOR(var, h) \
279 OPT_COLOR_FLAG(0, "color", (var), (h))
280 #define OPT_COLUMN(s, l, v, h) \
281 { OPTION_CALLBACK, (s), (l), (v), N_("style"), (h), PARSE_OPT_OPTARG, parseopt_column_callback }
282 #define OPT_PASSTHRU(s, l, v, a, h, f) \
283 { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru }
284 #define OPT_PASSTHRU_ARGV(s, l, v, a, h, f) \
285 { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru_argv }
286 #define _OPT_CONTAINS_OR_WITH(name, variable, help, flag) \
287 { OPTION_CALLBACK, 0, name, (variable), N_("commit"), (help), \
288 PARSE_OPT_LASTARG_DEFAULT | flag, \
289 parse_opt_commits, (intptr_t) "HEAD" \
291 #define OPT_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("contains", v, h, PARSE_OPT_NONEG)
292 #define OPT_NO_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("no-contains", v, h, PARSE_OPT_NONEG)
293 #define OPT_WITH(v, h) _OPT_CONTAINS_OR_WITH("with", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG)
294 #define OPT_WITHOUT(v, h) _OPT_CONTAINS_OR_WITH("without", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG)