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-rw-r--r--parse-options.c87
1 files changed, 44 insertions, 43 deletions
diff --git a/parse-options.c b/parse-options.c
index 0fa79bc31d..73bd28ad90 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -11,6 +11,13 @@ static int parse_options_usage(struct parse_opt_ctx_t *ctx,
#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)
@@ -55,25 +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;
@@ -281,13 +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);
}
@@ -320,25 +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;
@@ -350,6 +350,7 @@ 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(struct parse_opt_ctx_t *,
@@ -362,8 +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;
@@ -374,7 +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;
}
@@ -452,10 +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 */
@@ -541,7 +541,8 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
if (opts->type == OPTION_NUMBER)
pos += fprintf(outfile, "-NUM");
- if (!(opts->flags & PARSE_OPT_NOARG))
+ if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
+ !(opts->flags & PARSE_OPT_NOARG))
pos += usage_argh(opts, outfile);
if (pos <= USAGE_OPTS_WIDTH)
@@ -560,14 +561,14 @@ static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
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(NULL, usagestr, opts, 0, 1);
exit(129);
}
-void usage_msg_opt(const char *msg,
+void NORETURN usage_msg_opt(const char *msg,
const char * const *usagestr,
const struct option *options)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 22:44:56 +0000