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#ifndef _IPXE_PARAMS_H
#define _IPXE_PARAMS_H
/** @file
*
* Form parameters
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/list.h>
#include <ipxe/refcnt.h>
/** A form parameter list */
struct parameters {
/** Reference count */
struct refcnt refcnt;
/** List of all parameter lists */
struct list_head list;
/** Name */
const char *name;
/** Parameters */
struct list_head entries;
};
/** A form parameter */
struct parameter {
/** List of form parameters */
struct list_head list;
/** Key */
const char *key;
/** Value */
const char *value;
};
/**
* Increment form parameter list reference count
*
* @v params Parameter list, or NULL
* @ret params Parameter list as passed in
*/
static inline __attribute__ (( always_inline )) struct parameters *
params_get ( struct parameters *params ) {
ref_get ( ¶ms->refcnt );
return params;
}
/**
* Decrement form parameter list reference count
*
* @v params Parameter list, or NULL
*/
static inline __attribute__ (( always_inline )) void
params_put ( struct parameters *params ) {
ref_put ( ¶ms->refcnt );
}
/**
* Claim ownership of form parameter list
*
* @v params Parameter list
* @ret params Parameter list
*/
static inline __attribute__ (( always_inline )) struct parameters *
claim_parameters ( struct parameters *params ) {
/* Remove from list of parameter lists */
list_del ( ¶ms->list );
return params;
}
/** Iterate over all form parameters in a list */
#define for_each_param( param, params ) \
list_for_each_entry ( (param), &(params)->entries, list )
extern struct parameters * find_parameters ( const char *name );
extern struct parameters * create_parameters ( const char *name );
extern struct parameter * add_parameter ( struct parameters *params,
const char *key, const char *value );
#endif /* _IPXE_PARAMS_H */
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