PPATH_OBJECT(3)

PPATH_OBJECT(3) | Library Functions Manual | 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

Property-List Paths Library (libppath, -lppath)

# 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_data(3), ppath_number(3), ppath_string(3), proplib(3)

# HISTORY

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

# AUTHORS

David Young <dyoung@pobox.com>

August 24, 2011 | NetBSD 5.99