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util/opts: print help as a command line

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This commit is contained in:
Kamil Trzcinski
2023-02-21 17:22:06 +01:00
parent 168181afa5
commit 71a88f3fc2
1 changed files with 17 additions and 20 deletions
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37
util/opts/opts.c
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@ -18,7 +18,7 @@ static void print_help(option_t *options, const char *cmd)
option_t *option = &options[i];
int len = 0;
len += printf(" -%s", option->name);
len += printf(" --%s", option->name);
if (option->default_value) {
len += printf("[=%s]", option->default_value);
} else if (option->value_mapping) {
@ -43,7 +43,9 @@ static void print_help(option_t *options, const char *cmd)
}
printf("\n");
printf("Configuration:\n");
printf("Command line:\n\n");
printf("$ %s \\\n", cmd);
for (int i = 0; options[i].name; i++) {
option_t *option = &options[i];
int len = 0;
@ -56,36 +58,31 @@ static void print_help(option_t *options, const char *cmd)
continue;
while ((token = strsep(&string, OPTION_VALUE_LIST_SEP)) != NULL) {
len = printf(" -%s=", option->name);
if (len < OPT_LENGTH) {
printf("%*s", OPT_LENGTH-len, " ");
}
printf("%s\n", token);
len = printf(" --%s=", option->name);
printf("%s \\\n", token);
}
} else if (option->value_string) {
len += printf(" -%s=", option->name);
if (len < OPT_LENGTH) {
printf("%*s", OPT_LENGTH-len, " ");
}
len += printf(" --%s=", option->name);
printf(option->format, option->value_string);
printf("\n");
printf(" \\\n");
} else {
len += printf(" -%s=", option->name);
if (len < OPT_LENGTH) {
printf("%*s", OPT_LENGTH-len, " ");
}
bool found = false;
len += printf(" --%s=", option->name);
if (option->value_mapping) {
for (int j = 0; option->value_mapping[j].name; j++) {
if (option->value_mapping[j].value == *option->value_uint) {
printf("%s - ", option->value_mapping[j].name);
printf("%s", option->value_mapping[j].name);
found = true;
break;
}
}
}
unsigned mask = UINT_MAX >> ((sizeof(*option->value_uint) - option->size) * 8);
printf(option->format, *option->value_uint & mask);
printf("\n");
if (!found) {
unsigned mask = UINT_MAX >> ((sizeof(*option->value_uint) - option->size) * 8);
printf(option->format, *option->value_uint & mask);
}
printf(" \\\n");
}
}
printf("\n");