| #ifndef PARSE_OPTIONS_H |
| #define PARSE_OPTIONS_H |
| |
| enum parse_opt_type { |
| /* special types */ |
| OPTION_END, |
| OPTION_ARGUMENT, |
| OPTION_GROUP, |
| OPTION_NUMBER, |
| /* options with no arguments */ |
| OPTION_BIT, |
| OPTION_NEGBIT, |
| OPTION_BITOP, |
| OPTION_COUNTUP, |
| OPTION_SET_INT, |
| OPTION_CMDMODE, |
| /* options with arguments (usually) */ |
| OPTION_STRING, |
| OPTION_INTEGER, |
| OPTION_MAGNITUDE, |
| OPTION_CALLBACK, |
| OPTION_LOWLEVEL_CALLBACK, |
| OPTION_FILENAME |
| }; |
| |
| enum parse_opt_flags { |
| PARSE_OPT_KEEP_DASHDASH = 1, |
| PARSE_OPT_STOP_AT_NON_OPTION = 2, |
| PARSE_OPT_KEEP_ARGV0 = 4, |
| PARSE_OPT_KEEP_UNKNOWN = 8, |
| PARSE_OPT_NO_INTERNAL_HELP = 16, |
| PARSE_OPT_ONE_SHOT = 32 |
| }; |
| |
| enum parse_opt_option_flags { |
| PARSE_OPT_OPTARG = 1, |
| PARSE_OPT_NOARG = 2, |
| PARSE_OPT_NONEG = 4, |
| PARSE_OPT_HIDDEN = 8, |
| PARSE_OPT_LASTARG_DEFAULT = 16, |
| PARSE_OPT_NODASH = 32, |
| PARSE_OPT_LITERAL_ARGHELP = 64, |
| PARSE_OPT_SHELL_EVAL = 256, |
| PARSE_OPT_NOCOMPLETE = 512, |
| PARSE_OPT_COMP_ARG = 1024 |
| }; |
| |
| struct option; |
| typedef int parse_opt_cb(const struct option *, const char *arg, int unset); |
| |
| struct parse_opt_ctx_t; |
| typedef enum parse_opt_result parse_opt_ll_cb(struct parse_opt_ctx_t *ctx, |
| const struct option *opt, |
| const char *arg, int unset); |
| |
| /* |
| * `type`:: |
| * holds the type of the option, you must have an OPTION_END last in your |
| * array. |
| * |
| * `short_name`:: |
| * the character to use as a short option name, '\0' if none. |
| * |
| * `long_name`:: |
| * the long option name, without the leading dashes, NULL if none. |
| * |
| * `value`:: |
| * stores pointers to the values to be filled. |
| * |
| * `argh`:: |
| * token to explain the kind of argument this option wants. Keep it |
| * homogeneous across the repository. Should be wrapped by N_() for |
| * translation. |
| * |
| * `help`:: |
| * the short help associated to what the option does. |
| * Must never be NULL (except for OPTION_END). |
| * OPTION_GROUP uses this pointer to store the group header. |
| * Should be wrapped by N_() for translation. |
| * |
| * `flags`:: |
| * mask of parse_opt_option_flags. |
| * PARSE_OPT_OPTARG: says that the argument is optional (not for BOOLEANs) |
| * PARSE_OPT_NOARG: says that this option does not take an argument |
| * PARSE_OPT_NONEG: says that this option cannot be negated |
| * PARSE_OPT_HIDDEN: this option is skipped in the default usage, and |
| * shown only in the full usage. |
| * PARSE_OPT_LASTARG_DEFAULT: says that this option will take the default |
| * value if no argument is given when the option |
| * is last on the command line. If the option is |
| * not last it will require an argument. |
| * Should not be used with PARSE_OPT_OPTARG. |
| * PARSE_OPT_NODASH: this option doesn't start with a dash. |
| * PARSE_OPT_LITERAL_ARGHELP: says that argh shouldn't be enclosed in brackets |
| * (i.e. '<argh>') in the help message. |
| * Useful for options with multiple parameters. |
| * PARSE_OPT_NOCOMPLETE: by default all visible options are completable |
| * by git-completion.bash. This option suppresses that. |
| * PARSE_OPT_COMP_ARG: this option forces to git-completion.bash to |
| * complete an option as --name= not --name even if |
| * the option takes optional argument. |
| * |
| * `callback`:: |
| * pointer to the callback to use for OPTION_CALLBACK |
| * |
| * `defval`:: |
| * default value to fill (*->value) with for PARSE_OPT_OPTARG. |
| * OPTION_{BIT,SET_INT} store the {mask,integer} to put in the value when met. |
| * CALLBACKS can use it like they want. |
| * |
| * `ll_callback`:: |
| * pointer to the callback to use for OPTION_LOWLEVEL_CALLBACK |
| * |
| */ |
| struct option { |
| enum parse_opt_type type; |
| int short_name; |
| const char *long_name; |
| void *value; |
| const char *argh; |
| const char *help; |
| |
| int flags; |
| parse_opt_cb *callback; |
| intptr_t defval; |
| parse_opt_ll_cb *ll_callback; |
| intptr_t extra; |
| }; |
| |
| #define OPT_BIT_F(s, l, v, h, b, f) { OPTION_BIT, (s), (l), (v), NULL, (h), \ |
| PARSE_OPT_NOARG|(f), NULL, (b) } |
| #define OPT_COUNTUP_F(s, l, v, h, f) { OPTION_COUNTUP, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG|(f) } |
| #define OPT_SET_INT_F(s, l, v, h, i, f) { OPTION_SET_INT, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG | (f), NULL, (i) } |
| #define OPT_BOOL_F(s, l, v, h, f) OPT_SET_INT_F(s, l, v, h, 1, f) |
| #define OPT_CALLBACK_F(s, l, v, a, h, f, cb) \ |
| { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), (cb) } |
| #define OPT_STRING_F(s, l, v, a, h, f) { OPTION_STRING, (s), (l), (v), (a), (h), (f) } |
| #define OPT_INTEGER_F(s, l, v, h, f) { OPTION_INTEGER, (s), (l), (v), N_("n"), (h), (f) } |
| |
| #define OPT_END() { OPTION_END } |
| #define OPT_ARGUMENT(l, v, h) { OPTION_ARGUMENT, 0, (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG, NULL, 1 } |
| #define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) } |
| #define OPT_BIT(s, l, v, h, b) OPT_BIT_F(s, l, v, h, b, 0) |
| #define OPT_BITOP(s, l, v, h, set, clear) { OPTION_BITOP, (s), (l), (v), NULL, (h), \ |
| PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, \ |
| (set), NULL, (clear) } |
| #define OPT_NEGBIT(s, l, v, h, b) { OPTION_NEGBIT, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG, NULL, (b) } |
| #define OPT_COUNTUP(s, l, v, h) OPT_COUNTUP_F(s, l, v, h, 0) |
| #define OPT_SET_INT(s, l, v, h, i) OPT_SET_INT_F(s, l, v, h, i, 0) |
| #define OPT_BOOL(s, l, v, h) OPT_BOOL_F(s, l, v, h, 0) |
| #define OPT_HIDDEN_BOOL(s, l, v, h) { OPTION_SET_INT, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1} |
| #define OPT_CMDMODE(s, l, v, h, i) { OPTION_CMDMODE, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, (i) } |
| #define OPT_INTEGER(s, l, v, h) OPT_INTEGER_F(s, l, v, h, 0) |
| #define OPT_MAGNITUDE(s, l, v, h) { OPTION_MAGNITUDE, (s), (l), (v), \ |
| N_("n"), (h), PARSE_OPT_NONEG } |
| #define OPT_STRING(s, l, v, a, h) OPT_STRING_F(s, l, v, a, h, 0) |
| #define OPT_STRING_LIST(s, l, v, a, h) \ |
| { OPTION_CALLBACK, (s), (l), (v), (a), \ |
| (h), 0, &parse_opt_string_list } |
| #define OPT_UYN(s, l, v, h) { OPTION_CALLBACK, (s), (l), (v), NULL, \ |
| (h), PARSE_OPT_NOARG, &parse_opt_tertiary } |
| #define OPT_EXPIRY_DATE(s, l, v, h) \ |
| { OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0, \ |
| parse_opt_expiry_date_cb } |
| #define OPT_CALLBACK(s, l, v, a, h, f) OPT_CALLBACK_F(s, l, v, a, h, 0, f) |
| #define OPT_NUMBER_CALLBACK(v, h, f) \ |
| { OPTION_NUMBER, 0, NULL, (v), NULL, (h), \ |
| PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) } |
| #define OPT_FILENAME(s, l, v, h) { OPTION_FILENAME, (s), (l), (v), \ |
| N_("file"), (h) } |
| #define OPT_COLOR_FLAG(s, l, v, h) \ |
| { OPTION_CALLBACK, (s), (l), (v), N_("when"), (h), PARSE_OPT_OPTARG, \ |
| parse_opt_color_flag_cb, (intptr_t)"always" } |
| |
| #define OPT_NOOP_NOARG(s, l) \ |
| { OPTION_CALLBACK, (s), (l), NULL, NULL, \ |
| N_("no-op (backward compatibility)"), \ |
| PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, parse_opt_noop_cb } |
| |
| /* |
| * parse_options() will filter out the processed options and leave the |
| * non-option arguments in argv[]. argv0 is assumed program name and |
| * skipped. |
| * |
| * usagestr strings should be marked for translation with N_(). |
| * |
| * Returns the number of arguments left in argv[]. |
| * |
| * In one-shot mode, argv0 is not a program name, argv[] is left |
| * untouched and parse_options() returns the number of options |
| * processed. |
| */ |
| int parse_options(int argc, const char **argv, const char *prefix, |
| const struct option *options, |
| const char * const usagestr[], int flags); |
| |
| NORETURN void usage_with_options(const char * const *usagestr, |
| const struct option *options); |
| |
| NORETURN void usage_msg_opt(const char *msg, |
| const char * const *usagestr, |
| const struct option *options); |
| |
| int optbug(const struct option *opt, const char *reason); |
| const char *optname(const struct option *opt, int flags); |
| |
| /* |
| * Use these assertions for callbacks that expect to be called with NONEG and |
| * NOARG respectively, and do not otherwise handle the "unset" and "arg" |
| * parameters. |
| */ |
| #define BUG_ON_OPT_NEG(unset) do { \ |
| if ((unset)) \ |
| BUG("option callback does not expect negation"); \ |
| } while (0) |
| #define BUG_ON_OPT_ARG(arg) do { \ |
| if ((arg)) \ |
| BUG("option callback does not expect an argument"); \ |
| } while (0) |
| |
| /* |
| * Similar to the assertions above, but checks that "arg" is always non-NULL. |
| * This assertion also implies BUG_ON_OPT_NEG(), letting you declare both |
| * assertions in a single line. |
| */ |
| #define BUG_ON_OPT_NEG_NOARG(unset, arg) do { \ |
| BUG_ON_OPT_NEG(unset); \ |
| if(!(arg)) \ |
| BUG("option callback expects an argument"); \ |
| } while(0) |
| |
| /*----- incremental advanced APIs -----*/ |
| |
| enum parse_opt_result { |
| PARSE_OPT_COMPLETE = -3, |
| PARSE_OPT_HELP = -2, |
| PARSE_OPT_ERROR = -1, /* must be the same as error() */ |
| PARSE_OPT_DONE = 0, /* fixed so that "return 0" works */ |
| PARSE_OPT_NON_OPTION, |
| PARSE_OPT_UNKNOWN |
| }; |
| |
| /* |
| * It's okay for the caller to consume argv/argc in the usual way. |
| * Other fields of that structure are private to parse-options and should not |
| * be modified in any way. |
| */ |
| struct parse_opt_ctx_t { |
| const char **argv; |
| const char **out; |
| int argc, cpidx, total; |
| const char *opt; |
| int flags; |
| const char *prefix; |
| }; |
| |
| void parse_options_start(struct parse_opt_ctx_t *ctx, |
| int argc, const char **argv, const char *prefix, |
| const struct option *options, int flags); |
| |
| int parse_options_step(struct parse_opt_ctx_t *ctx, |
| const struct option *options, |
| const char * const usagestr[]); |
| |
| int parse_options_end(struct parse_opt_ctx_t *ctx); |
| |
| struct option *parse_options_concat(struct option *a, struct option *b); |
| |
| /*----- some often used options -----*/ |
| int parse_opt_abbrev_cb(const struct option *, const char *, int); |
| int parse_opt_expiry_date_cb(const struct option *, const char *, int); |
| int parse_opt_color_flag_cb(const struct option *, const char *, int); |
| int parse_opt_verbosity_cb(const struct option *, const char *, int); |
| /* value is struct oid_array* */ |
| int parse_opt_object_name(const struct option *, const char *, int); |
| /* value is struct object_id* */ |
| int parse_opt_object_id(const struct option *, const char *, int); |
| int parse_opt_commits(const struct option *, const char *, int); |
| int parse_opt_commit(const struct option *, const char *, int); |
| int parse_opt_tertiary(const struct option *, const char *, int); |
| int parse_opt_string_list(const struct option *, const char *, int); |
| int parse_opt_noop_cb(const struct option *, const char *, int); |
| int parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx, const struct option *, const char *, int); |
| int parse_opt_passthru(const struct option *, const char *, int); |
| int parse_opt_passthru_argv(const struct option *, const char *, int); |
| |
| #define OPT__VERBOSE(var, h) OPT_COUNTUP('v', "verbose", (var), (h)) |
| #define OPT__QUIET(var, h) OPT_COUNTUP('q', "quiet", (var), (h)) |
| #define OPT__VERBOSITY(var) \ |
| { OPTION_CALLBACK, 'v', "verbose", (var), NULL, N_("be more verbose"), \ |
| PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \ |
| { OPTION_CALLBACK, 'q', "quiet", (var), NULL, N_("be more quiet"), \ |
| PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 } |
| #define OPT__DRY_RUN(var, h) OPT_BOOL('n', "dry-run", (var), (h)) |
| #define OPT__FORCE(var, h, f) OPT_COUNTUP_F('f', "force", (var), (h), (f)) |
| #define OPT__ABBREV(var) \ |
| { OPTION_CALLBACK, 0, "abbrev", (var), N_("n"), \ |
| N_("use <n> digits to display SHA-1s"), \ |
| PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 } |
| #define OPT__COLOR(var, h) \ |
| OPT_COLOR_FLAG(0, "color", (var), (h)) |
| #define OPT_COLUMN(s, l, v, h) \ |
| { OPTION_CALLBACK, (s), (l), (v), N_("style"), (h), PARSE_OPT_OPTARG, parseopt_column_callback } |
| #define OPT_PASSTHRU(s, l, v, a, h, f) \ |
| { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru } |
| #define OPT_PASSTHRU_ARGV(s, l, v, a, h, f) \ |
| { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru_argv } |
| #define _OPT_CONTAINS_OR_WITH(name, variable, help, flag) \ |
| { OPTION_CALLBACK, 0, name, (variable), N_("commit"), (help), \ |
| PARSE_OPT_LASTARG_DEFAULT | flag, \ |
| parse_opt_commits, (intptr_t) "HEAD" \ |
| } |
| #define OPT_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("contains", v, h, PARSE_OPT_NONEG) |
| #define OPT_NO_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("no-contains", v, h, PARSE_OPT_NONEG) |
| #define OPT_WITH(v, h) _OPT_CONTAINS_OR_WITH("with", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
| #define OPT_WITHOUT(v, h) _OPT_CONTAINS_OR_WITH("without", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
| #define OPT_CLEANUP(v) OPT_STRING(0, "cleanup", v, N_("mode"), N_("how to strip spaces and #comments from message")) |
| |
| #endif |