static char* get_module_filename(Context* ctx) {
size_t buflen = ctx->json_filename_noext.length + 20;
char* str = wasm_alloc(ctx->allocator, buflen, WASM_DEFAULT_ALIGN);
size_t length = wasm_snprintf(
str, buflen, PRIstringslice ".%" PRIzd ".wasm",
WASM_PRINTF_STRING_SLICE_ARG(ctx->json_filename_noext), ctx->num_modules);
convert_backslash_to_slash(str, length);
return str;
}
static WasmStringSlice create_assert_func_name(WasmAllocator* allocator,
const char* format,
int format_index) {
WasmStringSlice name;
char buffer[256];
int buffer_len = wasm_snprintf(buffer, 256, format, format_index);
name.start = wasm_strndup(allocator, buffer, buffer_len);
name.length = buffer_len;
return name;
}
void wasm_print_help(WasmOptionParser* parser, const char* program_name) {
int i;
/* TODO(binji): do something more generic for filename here */
printf("usage: %s [options] filename\n\n", program_name);
printf("%s\n", parser->description);
printf("options:\n");
const int extra_space = 8;
int longest_name_length = 0;
for (i = 0; i < parser->num_options; ++i) {
WasmOption* option = &parser->options[i];
int length;
if (option->long_name) {
if (option->metavar) {
length =
wasm_snprintf(NULL, 0, "%s=%s", option->long_name, option->metavar);
} else {
length = wasm_snprintf(NULL, 0, "%s", option->long_name);
}
} else {
continue;
}
if (length > longest_name_length)
longest_name_length = length;
}
size_t buffer_size = longest_name_length + 1;
char* buffer = alloca(buffer_size);
for (i = 0; i < parser->num_options; ++i) {
WasmOption* option = &parser->options[i];
if (!option->short_name && !option->long_name)
continue;
if (option->short_name)
printf(" -%c, ", option->short_name);
else
printf(" ");
char format[20];
if (option->long_name) {
wasm_snprintf(format, sizeof(format), "--%%-%ds",
longest_name_length + extra_space);
if (option->metavar) {
wasm_snprintf(buffer, buffer_size, "%s=%s", option->long_name,
option->metavar);
printf(format, buffer);
} else {
printf(format, option->long_name);
}
} else {
/* +2 for the extra "--" above */
wasm_snprintf(format, sizeof(format), "%%-%ds",
longest_name_length + extra_space + 2);
printf(format, "");
}
if (option->help)
printf("%s", option->help);
printf("\n");
}
}
