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/* A hand-rolled KDL subset (D2).
*
* Enough of https://kdl.dev for configuration and layouts, and no more:
*
* name arg1 "arg two" key=value key2=3 {
* child "x"; child "y" // single-line children need ; terminators
* }
* // line comments, and block comments
*
* Values are kept as strings and converted on read, which keeps the parser
* small and puts type decisions where the meaning is.
*/
#ifndef SLOSH_KDL_H
#define SLOSH_KDL_H
#include <stdbool.h>
#include <stddef.h>
typedef struct {
char *key;
char *val;
} kdl_prop_t;
typedef struct kdl_node {
char *name;
char **args;
size_t nargs;
kdl_prop_t *props;
size_t nprops;
struct kdl_node **kids;
size_t nkids;
int line;
} kdl_node_t;
/* Parses a document into a synthetic root node whose children are the
* top-level nodes. Returns NULL and fills err (if given) on a syntax error. */
kdl_node_t *kdl_parse(const char *text, char *err, size_t errcap);
kdl_node_t *kdl_parse_file(const char *path, char *err, size_t errcap);
void kdl_free(kdl_node_t *n);
const kdl_node_t *kdl_child(const kdl_node_t *n, const char *name);
const char *kdl_arg(const kdl_node_t *n, size_t i, const char *fallback);
long kdl_arg_int(const kdl_node_t *n, size_t i, long fallback);
bool kdl_arg_bool(const kdl_node_t *n, size_t i, bool fallback);
const char *kdl_prop(const kdl_node_t *n, const char *key,
const char *fallback);
long kdl_prop_int(const kdl_node_t *n, const char *key, long fallback);
bool kdl_prop_bool(const kdl_node_t *n, const char *key, bool fallback);
#endif /* SLOSH_KDL_H */
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