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-rw-r--r--parse-options.c43
1 files changed, 30 insertions, 13 deletions
diff --git a/parse-options.c b/parse-options.c
index 04adf21..19fc849 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -94,14 +94,14 @@ static int get_value(struct parse_opt_ctx_t *p,
case OPTION_CALLBACK:
if (unset)
- return (*opt->callback)(opt, NULL, 1);
+ return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
if (opt->flags & PARSE_OPT_NOARG)
- return (*opt->callback)(opt, NULL, 0);
+ return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
- return (*opt->callback)(opt, NULL, 0);
+ return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
if (!arg)
return opterror(opt, "requires a value", flags);
- return (*opt->callback)(opt, get_arg(p), 0);
+ return (*opt->callback)(opt, get_arg(p), 0) ? (-1) : 0;
case OPTION_INTEGER:
if (unset) {
@@ -132,7 +132,7 @@ static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *optio
return get_value(p, options, OPT_SHORT);
}
}
- return error("unknown switch `%c'", *p->opt);
+ return -2;
}
static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
@@ -217,7 +217,7 @@ is_abbreviated:
abbrev_option->long_name);
if (abbrev_option)
return get_value(p, abbrev_option, abbrev_flags);
- return error("unknown option `%s'", arg);
+ return -2;
}
void check_typos(const char *arg, const struct option *options)
@@ -271,15 +271,23 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
ctx->opt = arg + 1;
if (*ctx->opt == 'h')
return parse_options_usage(usagestr, options);
- if (parse_short_opt(ctx, options) < 0)
- usage_with_options(usagestr, options);
+ switch (parse_short_opt(ctx, options)) {
+ case -1:
+ return parse_options_usage(usagestr, options);
+ case -2:
+ return PARSE_OPT_UNKNOWN;
+ }
if (ctx->opt)
check_typos(arg + 1, options);
while (ctx->opt) {
if (*ctx->opt == 'h')
return parse_options_usage(usagestr, options);
- if (parse_short_opt(ctx, options) < 0)
- usage_with_options(usagestr, options);
+ switch (parse_short_opt(ctx, options)) {
+ case -1:
+ return parse_options_usage(usagestr, options);
+ case -2:
+ return PARSE_OPT_UNKNOWN;
+ }
}
continue;
}
@@ -296,8 +304,12 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
return usage_with_options_internal(usagestr, options, 1);
if (!strcmp(arg + 2, "help"))
return parse_options_usage(usagestr, options);
- if (parse_long_opt(ctx, arg + 2, options))
- usage_with_options(usagestr, options);
+ switch (parse_long_opt(ctx, arg + 2, options)) {
+ case -1:
+ return parse_options_usage(usagestr, options);
+ case -2:
+ return PARSE_OPT_UNKNOWN;
+ }
}
return PARSE_OPT_DONE;
}
@@ -321,7 +333,12 @@ int parse_options(int argc, const char **argv, const struct option *options,
case PARSE_OPT_DONE:
break;
default: /* PARSE_OPT_UNKNOWN */
- abort(); /* unreached yet */
+ if (ctx.argv[0][1] == '-') {
+ error("unknown option `%s'", ctx.argv[0] + 2);
+ } else {
+ error("unknown switch `%c'", *ctx.opt);
+ }
+ usage_with_options(usagestr, options);
}
return parse_options_end(&ctx);