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-rw-r--r--parse-options.c24
-rw-r--r--parse-options.h9
2 files changed, 26 insertions, 7 deletions
diff --git a/parse-options.c b/parse-options.c
index 9964877..007b78e 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -257,8 +257,8 @@ int parse_options_end(struct parse_opt_ctx_t *ctx)
return ctx->cpidx + ctx->argc;
}
-static NORETURN void usage_with_options_internal(const char * const *,
- const struct option *, int);
+static int usage_with_options_internal(const char * const *,
+ const struct option *, int, int);
int parse_options(int argc, const char **argv, const struct option *options,
const char * const usagestr[], int flags)
@@ -302,7 +302,7 @@ int parse_options(int argc, const char **argv, const struct option *options,
}
if (!strcmp(arg + 2, "help-all"))
- usage_with_options_internal(usagestr, options, 1);
+ usage_with_options_internal(usagestr, options, 1, 1);
if (!strcmp(arg + 2, "help"))
usage_with_options(usagestr, options);
if (parse_long_opt(&ctx, arg + 2, options))
@@ -315,8 +315,8 @@ int parse_options(int argc, const char **argv, const struct option *options,
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
-void usage_with_options_internal(const char * const *usagestr,
- const struct option *opts, int full)
+int usage_with_options_internal(const char * const *usagestr,
+ const struct option *opts, int full, int do_exit)
{
fprintf(stderr, "usage: %s\n", *usagestr++);
while (*usagestr && **usagestr)
@@ -401,15 +401,25 @@ void usage_with_options_internal(const char * const *usagestr,
}
fputc('\n', stderr);
- exit(129);
+ if (do_exit)
+ exit(129);
+ return PARSE_OPT_HELP;
}
void usage_with_options(const char * const *usagestr,
const struct option *opts)
{
- usage_with_options_internal(usagestr, opts, 0);
+ usage_with_options_internal(usagestr, opts, 0, 1);
+ exit(129); /* make gcc happy */
}
+int parse_options_usage(const char * const *usagestr,
+ const struct option *opts)
+{
+ return usage_with_options_internal(usagestr, opts, 0, 0);
+}
+
+
/*----- some often used options -----*/
#include "cache.h"
diff --git a/parse-options.h b/parse-options.h
index 72027f3..f66ca35 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -113,6 +113,12 @@ extern NORETURN void usage_with_options(const char * const *usagestr,
/*----- incremantal advanced APIs -----*/
+enum {
+ PARSE_OPT_HELP = -1,
+ PARSE_OPT_DONE,
+ PARSE_OPT_UNKNOWN,
+};
+
struct parse_opt_ctx_t {
const char **argv;
const char **out;
@@ -121,6 +127,9 @@ struct parse_opt_ctx_t {
int flags;
};
+extern int parse_options_usage(const char * const *usagestr,
+ const struct option *opts);
+
extern void parse_options_start(struct parse_opt_ctx_t *ctx,
int argc, const char **argv, int flags);