diff options
Diffstat (limited to 'parse-options.c')
-rw-r--r-- | parse-options.c | 219 |
1 files changed, 143 insertions, 76 deletions
diff --git a/parse-options.c b/parse-options.c index f7ce523a61..73bd28ad90 100644 --- a/parse-options.c +++ b/parse-options.c @@ -2,10 +2,22 @@ #include "parse-options.h" #include "cache.h" #include "commit.h" +#include "color.h" + +static int parse_options_usage(struct parse_opt_ctx_t *ctx, + const char * const *usagestr, + const struct option *opts, int err); #define OPT_SHORT 1 #define OPT_UNSET 2 +static int optbug(const struct option *opt, const char *reason) +{ + if (opt->long_name) + return error("BUG: option '%s' %s", opt->long_name, reason); + return error("BUG: switch '%c' %s", opt->short_name, reason); +} + static int opterror(const struct option *opt, const char *reason, int flags) { if (flags & OPT_SHORT) @@ -50,25 +62,13 @@ static int get_value(struct parse_opt_ctx_t *p, return opterror(opt, "takes no value", flags); if (unset && (opt->flags & PARSE_OPT_NONEG)) return opterror(opt, "isn't available", flags); - - if (!(flags & OPT_SHORT) && p->opt) { - switch (opt->type) { - case OPTION_CALLBACK: - if (!(opt->flags & PARSE_OPT_NOARG)) - break; - /* FALLTHROUGH */ - case OPTION_BOOLEAN: - case OPTION_BIT: - case OPTION_NEGBIT: - case OPTION_SET_INT: - case OPTION_SET_PTR: - return opterror(opt, "takes no value", flags); - default: - break; - } - } + if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG)) + return opterror(opt, "takes no value", flags); switch (opt->type) { + case OPTION_LOWLEVEL_CALLBACK: + return (*(parse_opt_ll_cb *)opt->callback)(p, opt, unset); + case OPTION_BIT: if (unset) *(int *)opt->value &= ~opt->defval; @@ -230,6 +230,9 @@ is_abbreviated: abbrev_flags = flags; continue; } + /* negation allowed? */ + if (options->flags & PARSE_OPT_NONEG) + continue; /* negated and abbreviated very much? */ if (!prefixcmp("no-", arg)) { flags |= OPT_UNSET; @@ -273,13 +276,6 @@ static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg, for (; options->type != OPTION_END; options++) { if (!(options->flags & PARSE_OPT_NODASH)) continue; - if ((options->flags & PARSE_OPT_OPTARG) || - !(options->flags & PARSE_OPT_NOARG)) - die("BUG: dashless options don't support arguments"); - if (!(options->flags & PARSE_OPT_NONEG)) - die("BUG: dashless options don't support negation"); - if (options->long_name) - die("BUG: dashless options can't be long"); if (options->short_name == arg[0] && arg[1] == '\0') return get_value(p, options, OPT_SHORT); } @@ -312,25 +308,37 @@ static void parse_options_check(const struct option *opts) for (; opts->type != OPTION_END; opts++) { if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) && - (opts->flags & PARSE_OPT_OPTARG)) { - if (opts->long_name) { - error("`--%s` uses incompatible flags " - "LASTARG_DEFAULT and OPTARG", opts->long_name); - } else { - error("`-%c` uses incompatible flags " - "LASTARG_DEFAULT and OPTARG", opts->short_name); - } - err |= 1; + (opts->flags & PARSE_OPT_OPTARG)) + err |= optbug(opts, "uses incompatible flags " + "LASTARG_DEFAULT and OPTARG"); + if (opts->flags & PARSE_OPT_NODASH && + ((opts->flags & PARSE_OPT_OPTARG) || + !(opts->flags & PARSE_OPT_NOARG) || + !(opts->flags & PARSE_OPT_NONEG) || + opts->long_name)) + err |= optbug(opts, "uses feature " + "not supported for dashless options"); + switch (opts->type) { + case OPTION_BOOLEAN: + case OPTION_BIT: + case OPTION_NEGBIT: + case OPTION_SET_INT: + case OPTION_SET_PTR: + case OPTION_NUMBER: + if ((opts->flags & PARSE_OPT_OPTARG) || + !(opts->flags & PARSE_OPT_NOARG)) + err |= optbug(opts, "should not accept an argument"); + default: + ; /* ok. (usually accepts an argument) */ } } - if (err) - exit(129); + exit(128); } void parse_options_start(struct parse_opt_ctx_t *ctx, int argc, const char **argv, const char *prefix, - int flags) + const struct option *options, int flags) { memset(ctx, 0, sizeof(*ctx)); ctx->argc = argc - 1; @@ -342,10 +350,12 @@ void parse_options_start(struct parse_opt_ctx_t *ctx, if ((flags & PARSE_OPT_KEEP_UNKNOWN) && (flags & PARSE_OPT_STOP_AT_NON_OPTION)) die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); + parse_options_check(options); } -static int usage_with_options_internal(const char * const *, - const struct option *, int); +static int usage_with_options_internal(struct parse_opt_ctx_t *, + const char * const *, + const struct option *, int, int); int parse_options_step(struct parse_opt_ctx_t *ctx, const struct option *options, @@ -353,8 +363,6 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, { int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); - parse_options_check(options); - /* we must reset ->opt, unknown short option leave it dangling */ ctx->opt = NULL; @@ -365,7 +373,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, if (parse_nodash_opt(ctx, arg, options) == 0) continue; if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) - break; + return PARSE_OPT_NON_OPTION; ctx->out[ctx->cpidx++] = ctx->argv[0]; continue; } @@ -373,10 +381,10 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, if (arg[1] != '-') { ctx->opt = arg + 1; if (internal_help && *ctx->opt == 'h') - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 0); switch (parse_short_opt(ctx, options)) { case -1: - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 1); case -2: goto unknown; } @@ -384,10 +392,10 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, check_typos(arg + 1, options); while (ctx->opt) { if (internal_help && *ctx->opt == 'h') - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 0); switch (parse_short_opt(ctx, options)) { case -1: - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 1); case -2: /* fake a short option thing to hide the fact that we may have * started to parse aggregated stuff @@ -411,12 +419,12 @@ int parse_options_step(struct parse_opt_ctx_t *ctx, } if (internal_help && !strcmp(arg + 2, "help-all")) - return usage_with_options_internal(usagestr, options, 1); + return usage_with_options_internal(ctx, usagestr, options, 1, 0); if (internal_help && !strcmp(arg + 2, "help")) - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 0); switch (parse_long_opt(ctx, arg + 2, options)) { case -1: - return parse_options_usage(usagestr, options); + return parse_options_usage(ctx, usagestr, options, 1); case -2: goto unknown; } @@ -443,10 +451,11 @@ int parse_options(int argc, const char **argv, const char *prefix, { struct parse_opt_ctx_t ctx; - parse_options_start(&ctx, argc, argv, prefix, flags); + parse_options_start(&ctx, argc, argv, prefix, options, flags); switch (parse_options_step(&ctx, options, usagestr)) { case PARSE_OPT_HELP: exit(129); + case PARSE_OPT_NON_OPTION: case PARSE_OPT_DONE: break; default: /* PARSE_OPT_UNKNOWN */ @@ -461,7 +470,7 @@ int parse_options(int argc, const char **argv, const char *prefix, return parse_options_end(&ctx); } -static int usage_argh(const struct option *opts) +static int usage_argh(const struct option *opts, FILE *outfile) { const char *s; int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh; @@ -472,85 +481,106 @@ static int usage_argh(const struct option *opts) s = literal ? "[%s]" : "[<%s>]"; else s = literal ? " %s" : " <%s>"; - return fprintf(stderr, s, opts->argh ? opts->argh : "..."); + return fprintf(outfile, s, opts->argh ? opts->argh : "..."); } #define USAGE_OPTS_WIDTH 24 #define USAGE_GAP 2 -static int usage_with_options_internal(const char * const *usagestr, - const struct option *opts, int full) +static int usage_with_options_internal(struct parse_opt_ctx_t *ctx, + const char * const *usagestr, + const struct option *opts, int full, int err) { + FILE *outfile = err ? stderr : stdout; + if (!usagestr) return PARSE_OPT_HELP; - fprintf(stderr, "usage: %s\n", *usagestr++); + if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) + fprintf(outfile, "cat <<\\EOF\n"); + + fprintf(outfile, "usage: %s\n", *usagestr++); while (*usagestr && **usagestr) - fprintf(stderr, " or: %s\n", *usagestr++); + fprintf(outfile, " or: %s\n", *usagestr++); while (*usagestr) { - fprintf(stderr, "%s%s\n", + fprintf(outfile, "%s%s\n", **usagestr ? " " : "", *usagestr); usagestr++; } if (opts->type != OPTION_GROUP) - fputc('\n', stderr); + fputc('\n', outfile); for (; opts->type != OPTION_END; opts++) { size_t pos; int pad; if (opts->type == OPTION_GROUP) { - fputc('\n', stderr); + fputc('\n', outfile); if (*opts->help) - fprintf(stderr, "%s\n", opts->help); + fprintf(outfile, "%s\n", opts->help); continue; } if (!full && (opts->flags & PARSE_OPT_HIDDEN)) continue; - pos = fprintf(stderr, " "); - if (opts->short_name) { + pos = fprintf(outfile, " "); + if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) { if (opts->flags & PARSE_OPT_NODASH) - pos += fprintf(stderr, "%c", opts->short_name); + pos += fprintf(outfile, "%c", opts->short_name); else - pos += fprintf(stderr, "-%c", opts->short_name); + pos += fprintf(outfile, "-%c", opts->short_name); } if (opts->long_name && opts->short_name) - pos += fprintf(stderr, ", "); + pos += fprintf(outfile, ", "); if (opts->long_name) - pos += fprintf(stderr, "--%s", opts->long_name); + pos += fprintf(outfile, "--%s%s", + (opts->flags & PARSE_OPT_NEGHELP) ? "no-" : "", + opts->long_name); if (opts->type == OPTION_NUMBER) - pos += fprintf(stderr, "-NUM"); + pos += fprintf(outfile, "-NUM"); - if (!(opts->flags & PARSE_OPT_NOARG)) - pos += usage_argh(opts); + if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) || + !(opts->flags & PARSE_OPT_NOARG)) + pos += usage_argh(opts, outfile); if (pos <= USAGE_OPTS_WIDTH) pad = USAGE_OPTS_WIDTH - pos; else { - fputc('\n', stderr); + fputc('\n', outfile); pad = USAGE_OPTS_WIDTH; } - fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help); + fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", opts->help); } - fputc('\n', stderr); + fputc('\n', outfile); + + if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) + fputs("EOF\n", outfile); return PARSE_OPT_HELP; } -void usage_with_options(const char * const *usagestr, +void NORETURN usage_with_options(const char * const *usagestr, const struct option *opts) { - usage_with_options_internal(usagestr, opts, 0); + usage_with_options_internal(NULL, usagestr, opts, 0, 1); exit(129); } -int parse_options_usage(const char * const *usagestr, - const struct option *opts) +void NORETURN usage_msg_opt(const char *msg, + const char * const *usagestr, + const struct option *options) +{ + fprintf(stderr, "%s\n\n", msg); + usage_with_options(usagestr, options); +} + +static int parse_options_usage(struct parse_opt_ctx_t *ctx, + const char * const *usagestr, + const struct option *opts, int err) { - return usage_with_options_internal(usagestr, opts, 0); + return usage_with_options_internal(ctx, usagestr, opts, 0, err); } @@ -583,6 +613,21 @@ int parse_opt_approxidate_cb(const struct option *opt, const char *arg, return 0; } +int parse_opt_color_flag_cb(const struct option *opt, const char *arg, + int unset) +{ + int value; + + if (!arg) + arg = unset ? "never" : (const char *)opt->defval; + value = git_config_colorbool(NULL, arg, -1); + if (value < 0) + return opterror(opt, + "expects \"always\", \"auto\", or \"never\"", 0); + *(int *)opt->value = value; + return 0; +} + int parse_opt_verbosity_cb(const struct option *opt, const char *arg, int unset) { @@ -620,3 +665,25 @@ int parse_opt_with_commit(const struct option *opt, const char *arg, int unset) commit_list_insert(commit, opt->value); return 0; } + +int parse_opt_tertiary(const struct option *opt, const char *arg, int unset) +{ + int *target = opt->value; + *target = unset ? 2 : 1; + return 0; +} + +int parse_options_concat(struct option *dst, size_t dst_size, struct option *src) +{ + int i, j; + + for (i = 0; i < dst_size; i++) + if (dst[i].type == OPTION_END) + break; + for (j = 0; i < dst_size; i++, j++) { + dst[i] = src[j]; + if (src[j].type == OPTION_END) + return 0; + } + return -1; +} |