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Hide struct args behind a couple of accessor functions.

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This commit is contained in:
nicm
2021-08-20 19:50:16 +00:00
parent de94a344f6
commit 5f32b7d961
41 changed files with 355 additions and 306 deletions
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62
arguments.c
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@ -38,6 +38,12 @@ struct args_entry {
RB_ENTRY(args_entry) entry;
};
struct args {
struct args_tree tree;
int argc;
char **argv;
};
static struct args_entry *args_find(struct args *, u_char);
static int args_cmp(struct args_entry *, struct args_entry *);
@ -73,7 +79,7 @@ args_create(void)
/* Parse an argv and argc into a new argument set. */
struct args *
args_parse(const char *template, int argc, char **argv)
args_parse(const char *template, int argc, char **argv, int lower, int upper)
{
struct args *args;
int opt;
@ -99,6 +105,10 @@ args_parse(const char *template, int argc, char **argv)
args->argc = argc;
args->argv = cmd_copy_argv(argc, argv);
if ((lower != -1 && argc < lower) || (upper != -1 && argc > upper)) {
args_free(args);
return (NULL);
}
return (args);
}
@ -126,6 +136,14 @@ args_free(struct args *args)
free(args);
}
/* Convert arguments to vector. */
void
args_vector(struct args *args, int *argc, char ***argv)
{
*argc = args->argc;
*argv = cmd_copy_argv(args->argc, args->argv);
}
/* Add to string. */
static void printflike(3, 4)
args_print_add(char **buf, size_t *len, const char *fmt, ...)
@ -145,23 +163,6 @@ args_print_add(char **buf, size_t *len, const char *fmt, ...)
free(s);
}
/* Add value to string. */
static void
args_print_add_value(char **buf, size_t *len, struct args_entry *entry,
struct args_value *value)
{
char *escaped;
if (**buf != '\0')
args_print_add(buf, len, " -%c ", entry->flag);
else
args_print_add(buf, len, "-%c ", entry->flag);
escaped = args_escape(value->value);
args_print_add(buf, len, "%s", escaped);
free(escaped);
}
/* Add argument to string. */
static void
args_print_add_argument(char **buf, size_t *len, const char *argument)
@ -203,8 +204,13 @@ args_print(struct args *args)
/* Then the flags with arguments. */
RB_FOREACH(entry, args_tree, &args->tree) {
TAILQ_FOREACH(value, &entry->values, entry)
args_print_add_value(&buf, &len, entry, value);
TAILQ_FOREACH(value, &entry->values, entry) {
if (*buf != '\0')
args_print_add(&buf, &len, " -%c", entry->flag);
else
args_print_add(&buf, &len, "-%c", entry->flag);
args_print_add_argument(&buf, &len, value->value);
}
}
/* And finally the argument vector. */
@ -330,6 +336,22 @@ args_next(struct args_entry **entry)
return ((*entry)->flag);
}
/* Get argument count. */
u_int
args_count(struct args *args)
{
return (args->argc);
}
/* Return argument as string. */
const char *
args_string(struct args *args, u_int idx)
{
if (idx >= (u_int)args->argc)
return (NULL);
return (args->argv[idx]);
}
/* Get first value in argument. */
struct args_value *
args_first_value(struct args *args, u_char flag)