diff options
Diffstat (limited to 'parse-options.h')
| -rw-r--r-- | parse-options.h | 173 |
1 files changed, 112 insertions, 61 deletions
diff --git a/parse-options.h b/parse-options.h index a650a7d220..7030d8f3da 100644 --- a/parse-options.h +++ b/parse-options.h @@ -1,18 +1,23 @@ #ifndef PARSE_OPTIONS_H #define PARSE_OPTIONS_H +/** + * Refer to Documentation/technical/api-parse-options.txt for the API doc. + */ + enum parse_opt_type { /* special types */ OPTION_END, OPTION_ARGUMENT, OPTION_GROUP, OPTION_NUMBER, + OPTION_ALIAS, /* 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, @@ -27,7 +32,8 @@ enum parse_opt_flags { 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_NO_INTERNAL_HELP = 16, + PARSE_OPT_ONE_SHOT = 32 }; enum parse_opt_option_flags { @@ -40,15 +46,26 @@ enum parse_opt_option_flags { PARSE_OPT_LITERAL_ARGHELP = 64, PARSE_OPT_SHELL_EVAL = 256, PARSE_OPT_NOCOMPLETE = 512, - PARSE_OPT_COMP_ARG = 1024 + PARSE_OPT_COMP_ARG = 1024, + PARSE_OPT_CMDMODE = 2048 +}; + +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 }; struct option; typedef int parse_opt_cb(const struct option *, const char *arg, int unset); struct parse_opt_ctx_t; -typedef int parse_opt_ll_cb(struct parse_opt_ctx_t *ctx, - const struct option *opt, int unset); +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`:: @@ -98,13 +115,16 @@ typedef int parse_opt_ll_cb(struct parse_opt_ctx_t *ctx, * the option takes optional argument. * * `callback`:: - * pointer to the callback to use for OPTION_CALLBACK or - * OPTION_LOWLEVEL_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; @@ -117,6 +137,8 @@ struct option { 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), \ @@ -126,12 +148,19 @@ struct option { #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, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, \ - (h), PARSE_OPT_NOARG} +#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) @@ -139,12 +168,12 @@ struct option { #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) { OPTION_INTEGER, (s), (l), (v), N_("n"), (h) } +#define OPT_CMDMODE(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, \ + (h), PARSE_OPT_CMDMODE|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) { OPTION_STRING, (s), (l), (v), (a), (h) } +#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 } @@ -153,8 +182,7 @@ struct option { #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) \ - { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) } +#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) } @@ -169,27 +197,35 @@ struct option { 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[]. usagestr strings should be marked - * for translation with N_(). +#define OPT_ALIAS(s, l, source_long_name) \ + { OPTION_ALIAS, (s), (l), (source_long_name) } + +/* + * 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. */ -extern int parse_options(int argc, const char **argv, const char *prefix, - const struct option *options, - const char * const usagestr[], int flags); +int parse_options(int argc, const char **argv, const char *prefix, + const struct option *options, + const char * const usagestr[], int flags); -extern NORETURN void usage_with_options(const char * const *usagestr, - const struct option *options); +NORETURN void usage_with_options(const char * const *usagestr, + const struct option *options); -extern NORETURN void usage_msg_opt(const char *msg, - const char * const *usagestr, - const struct option *options); +NORETURN void usage_msg_opt(const char *msg, + const char * const *usagestr, + const struct option *options); -extern int optbug(const struct option *opt, const char *reason); -extern int opterror(const struct option *opt, const char *reason, int flags); -#if defined(__GNUC__) -#define opterror(o,r,f) (opterror((o),(r),(f)), const_error()) -#endif +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 @@ -205,16 +241,18 @@ extern int opterror(const struct option *opt, const char *reason, int flags); BUG("option callback does not expect an argument"); \ } while (0) -/*----- incremental advanced APIs -----*/ +/* + * 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) -enum { - PARSE_OPT_COMPLETE = -2, - PARSE_OPT_HELP = -1, - PARSE_OPT_DONE, - PARSE_OPT_NON_OPTION, - PARSE_OPT_ERROR, - PARSE_OPT_UNKNOWN -}; +/*----- incremental advanced APIs -----*/ /* * It's okay for the caller to consume argv/argc in the usual way. @@ -228,33 +266,42 @@ struct parse_opt_ctx_t { const char *opt; int flags; const char *prefix; + const char **alias_groups; /* must be in groups of 3 elements! */ + struct option *updated_options; }; -extern void parse_options_start(struct parse_opt_ctx_t *ctx, - int argc, const char **argv, const char *prefix, - const struct option *options, int flags); +void parse_options_start(struct parse_opt_ctx_t *ctx, + int argc, const char **argv, const char *prefix, + const struct option *options, int flags); -extern int parse_options_step(struct parse_opt_ctx_t *ctx, - const struct option *options, - const char * const usagestr[]); +int parse_options_step(struct parse_opt_ctx_t *ctx, + const struct option *options, + const char * const usagestr[]); -extern int parse_options_end(struct parse_opt_ctx_t *ctx); +int parse_options_end(struct parse_opt_ctx_t *ctx); -extern struct option *parse_options_concat(struct option *a, struct option *b); +struct option *parse_options_dup(const struct option *a); +struct option *parse_options_concat(const struct option *a, const struct option *b); /*----- some often used options -----*/ -extern int parse_opt_abbrev_cb(const struct option *, const char *, int); -extern int parse_opt_expiry_date_cb(const struct option *, const char *, int); -extern int parse_opt_color_flag_cb(const struct option *, const char *, int); -extern int parse_opt_verbosity_cb(const struct option *, const char *, int); -extern int parse_opt_object_name(const struct option *, const char *, int); -extern int parse_opt_commits(const struct option *, const char *, int); -extern int parse_opt_tertiary(const struct option *, const char *, int); -extern int parse_opt_string_list(const struct option *, const char *, int); -extern int parse_opt_noop_cb(const struct option *, const char *, int); -extern int parse_opt_unknown_cb(const struct option *, const char *, int); -extern int parse_opt_passthru(const struct option *, const char *, int); -extern int parse_opt_passthru_argv(const struct option *, const char *, int); +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); +enum parse_opt_result 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)) @@ -267,7 +314,7 @@ extern int parse_opt_passthru_argv(const struct option *, const char *, int); #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"), \ + N_("use <n> digits to display object names"), \ PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 } #define OPT__COLOR(var, h) \ OPT_COLOR_FLAG(0, "color", (var), (h)) @@ -286,5 +333,9 @@ extern int parse_opt_passthru_argv(const struct option *, const char *, int); #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")) +#define OPT_PATHSPEC_FROM_FILE(v) OPT_FILENAME(0, "pathspec-from-file", v, N_("read pathspec from file")) +#define OPT_PATHSPEC_FILE_NUL(v) OPT_BOOL(0, "pathspec-file-nul", v, N_("with --pathspec-from-file, pathspec elements are separated with NUL character")) +#define OPT_AUTOSTASH(v) OPT_BOOL(0, "autostash", v, N_("automatically stash/stash pop before and after")) #endif |