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[util] Report exit codes in help

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This commit is contained in:
Behdad Esfahbod 2025-03-26 21:12:27 -06:00
parent 8dadcdbe25
commit 0d1123d072
4 changed files with 30 additions and 2 deletions
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1
util/face-options.hh
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@ -167,6 +167,7 @@ face_options_t::add_options (option_parser_t *parser)
this);
parser->add_environ("HB_FACE_LOADER=face-loader; Overrides the default face loader.");
parser->add_exit_code (RETURN_VALUE_FACE_LOAD_FAILED, "Failed loading font face.");
}
#endif

1
util/font-options.hh
View file

@ -369,6 +369,7 @@ font_options_t::add_options (option_parser_t *parser)
#endif
parser->add_environ("HB_FONT_FUNCS=font-funcs; Overrides the default font-funcs.");
parser->add_exit_code (RETURN_VALUE_FONT_FUNCS_FAILED, "Failed setting font functions.");
}
#endif

1
util/main-font-text.hh
View file

@ -43,6 +43,7 @@ struct main_font_text_t :
int operator () (int argc, char **argv)
{
add_options ();
add_exit_code (RETURN_VALUE_OPERATION_FAILED, "Operation failed.");
parse (&argc, &argv);

29
util/options.hh
View file

@ -28,6 +28,7 @@
#define OPTIONS_HH
#include "hb.hh"
#include "hb-map.hh"
#include <stdlib.h>
#include <stddef.h>
@ -90,6 +91,7 @@ struct option_parser_t
option_parser_t (const char *parameter_string = nullptr)
: context (g_option_context_new (parameter_string)),
environs (g_ptr_array_new ()),
exit_codes (g_ptr_array_new ()),
to_free (g_ptr_array_new ())
{}
@ -97,6 +99,7 @@ struct option_parser_t
~option_parser_t ()
{
g_ptr_array_free (exit_codes, TRUE);
g_ptr_array_free (environs, TRUE);
g_option_context_free (context);
@ -165,17 +168,28 @@ struct option_parser_t
{
GString *s = g_string_new (description);
// Exit codes
assert (exit_codes->len);
g_string_append_printf (s, "\n\n*Exit Codes*\n");
for (unsigned i = 0; i < exit_codes->len; i++)
if (exit_codes->pdata[i])
g_string_append_printf (s, "\n %u: %s\n", i, (const char *) exit_codes->pdata[i]);
// Environment variables if any
if (environs->len)
{
g_string_append_printf (s, "\n\n*Environment*\n\n");
g_string_append_printf (s, "\n\n*Environment*\n");
for (unsigned i = 0; i < environs->len; i++)
g_string_append_printf (s, " %s\n\n", (char *)environs->pdata[i]);
{
g_string_append_printf (s, "\n %s\n", (char *)environs->pdata[i]);
}
}
// See also
g_string_append_printf (s, "\n\n*See also*\n");
g_string_append_printf (s, " hb-view(1), hb-shape(1), hb-subset(1), hb-info(1)");
// Footer
g_string_append_printf (s, "\n\nFind more information or report bugs at <https://github.com/harfbuzz/harfbuzz>\n");
g_option_context_set_description (context, s->str);
@ -187,6 +201,13 @@ struct option_parser_t
g_ptr_array_add (environs, (void *) environment);
}
void add_exit_code (unsigned code, const char *description)
{
while (exit_codes->len <= code)
g_ptr_array_add (exit_codes, nullptr);
exit_codes->pdata[code] = (void *) description;
}
void free_later (char *p) {
g_ptr_array_add (to_free, p);
}
@ -197,6 +218,7 @@ struct option_parser_t
protected:
const char *description = nullptr;
GPtrArray *environs;
GPtrArray *exit_codes;
GPtrArray *to_free;
};
@ -231,6 +253,9 @@ option_parser_t::parse (int *argc, char ***argv, bool ignore_error)
{
setlocale (LC_ALL, "");
add_exit_code (RETURN_VALUE_SUCCESS, "Success.");
add_exit_code (RETURN_VALUE_OPTION_PARSING_FAILED, "Option parsing failed.");
set_full_description ();
GError *parse_error = nullptr;