PPATH_OBJECT(3)

NAME
ppath_object, ppath_copydel_object, ppath_copyset_object, ppath_set_object, ppath_get_object, ppath_delete_object, ppath_copydel_data, ppath_copyset_data, ppath_set_data, ppath_get_data, ppath_dup_data, ppath_delete_data, ppath_copydel_string, ppath_copyset_string, ppath_set_string, ppath_get_string, ppath_dup_string, ppath_delete_string - property object path operations

LIBRARY
libppath

SYNOPSIS
#include <ppath/ppath.h>
int
ppath_copydel_object(prop_object_t, prop_object_t *, const ppath_t *);
int
ppath_copyset_object(prop_object_t, prop_object_t *, const ppath_t *, prop_object_t);
int
ppath_set_object(prop_object_t, const ppath_t *, prop_object_t);
int
ppath_get_object(prop_object_t, const ppath_t *, prop_object_t *);
int
ppath_delete_object(prop_object_t, const ppath_t *);
int
ppath_copydel_data(prop_object_t, prop_object_t *, const ppath_t *);
int
ppath_copyset_data(prop_object_t, prop_object_t *, const ppath_t *, const void *, size_t);
int
ppath_set_data(prop_object_t, const ppath_t *, const void *, size_t);
int
ppath_get_data(prop_object_t, const ppath_t *, const void **, size_t *);
int
ppath_dup_data(prop_object_t, const ppath_t *, void **, size_t *);
int
ppath_delete_data(prop_object_t, const ppath_t *);
int
ppath_copydel_string(prop_object_t, prop_object_t *, const ppath_t *);
int
ppath_copyset_string(prop_object_t, prop_object_t *, const ppath_t *, const char *);
int
ppath_set_string(prop_object_t, const ppath_t *, const char *);
int
ppath_get_string(prop_object_t, const ppath_t *, const char **);
int
ppath_dup_string(prop_object_t, const ppath_t *, char **);
int
ppath_delete_string(prop_object_t, const ppath_t *);

DESCRIPTION
The ppath_object routines read, write, or delete objects in a property list by path.

FUNCTIONS
ppath_object provides these functions for manipulating objects in a property list by the objects' paths:

ppath_copydel_object(prop_object_t o, prop_object_t *op, const ppath_t *p)
    Create a copy of the property list o at *op. Delete from the copy the property named by p.

    If *op is NULL, ppath_copydel_object() creates a shallow copy of o at *op. If *op is not NULL, ppath_copydel_object() expects for *op to be an existing shallow copy of o.

    For the purposes of ppath_copydel_object(), *op is a shallow copy of property list o if equal properties at equal paths are shared between the two. Before ppath_copydel_object() modifies a property shared by *op and o, it creates a private copy of the property for *op.

ppath_copyset_object(prop_object_t o, prop_object_t *op, const ppath_t *p, prop_object_t v)
    Create a copy of the property list o at *op. In the copy, replace with v the property named by p.

    If *op is NULL, ppath_copyset_object() creates a shallow copy of o at *op. If *op is not NULL, ppath_copyset_object() expects for *op to be an existing shallow copy of o.

    For the purposes of ppath_copyset_object(), *op is a shallow copy of property list o if equal properties at equal paths are shared between the two. Before ppath_copydel_object() modifies a property shared by *op and o, it creates a private copy of the property for *op.

ppath_set_object(prop_object_t o, const ppath_t *p, prop_object_t v)
    Replace with v the prop_object_t in o named by p.

ppath_get_object(prop_object_t o, const ppath_t *p, prop_object_t *vp)
    Retrieve the prop_object_t named by p from o, and write it to *vp. ppath_get_object() does not increase the reference count of the retrieved object.

ppath_delete_object(prop_object_t o, const ppath_t *p)
    Delete the prop_object_t named by p from o. ppath_delete_object() decreases by one the deleted object's reference count.

RETURN VALUES
ppath_object routines return 0 on success, and non-zero on error.

ERRORS

[EFTYPE]
    The ppath_object call requested a

[ENOENT]
    ppath_copyset_object(), ppath_delete_object(), ppath_get_object(), and ppath_set_object() return ENOENT if the path p does not exist in o.

[ENOMEM]
    ppath_set_object() and ppath_copyset_object() will return ENOMEM if there was insufficient memory to complete the operation.

SEE ALSO
ppath(3), ppath_number(3), proplib(3)

HISTORY
The ppath_object property container path library first appeared in NetBSD 6.0.

AUTHORS
David Young <dyoung@pobox.com>