262 lines
8.7 KiB
Groff
262 lines
8.7 KiB
Groff
.\" $NetBSD: prop_array.3,v 1.4 2006/08/21 04:13:28 thorpej Exp $
|
|
.\"
|
|
.\" Copyright (c) 2006 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Jason R. Thorpe.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the NetBSD
|
|
.\" Foundation, Inc. and its contributors.
|
|
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived
|
|
.\" from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd August 19, 2006
|
|
.Dt PROP_ARRAY 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm prop_array ,
|
|
.Nm prop_array_create ,
|
|
.Nm prop_array_create_with_capacity ,
|
|
.Nm prop_array_copy ,
|
|
.Nm prop_array_copy_mutable ,
|
|
.Nm prop_array_capacity ,
|
|
.Nm prop_array_count ,
|
|
.Nm prop_array_ensure_capacity ,
|
|
.Nm prop_array_iterator ,
|
|
.Nm prop_array_make_immutable ,
|
|
.Nm prop_array_mutable ,
|
|
.Nm prop_array_get ,
|
|
.Nm prop_array_set ,
|
|
.Nm prop_array_add ,
|
|
.Nm prop_array_remove ,
|
|
.Nm prop_array_externalize ,
|
|
.Nm prop_array_internalize ,
|
|
.Nm prop_array_externalize_to_file ,
|
|
.Nm prop_array_internalize_from_file ,
|
|
.Nm prop_array_equals
|
|
.Nd array property collection object
|
|
.Sh LIBRARY
|
|
.Lb libprop
|
|
.Sh SYNOPSIS
|
|
.In prop/proplib.h
|
|
.\"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_create "void"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_create_with_capacity "unsigned int capacity"
|
|
.\"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_copy "prop_array_t array"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_copy_mutable "prop_array_t array"
|
|
.\"
|
|
.Ft unsigned int
|
|
.Fn prop_array_capacity "prop_array_t array"
|
|
.Ft unsigned int
|
|
.Fn prop_array_count "prop_array_t array"
|
|
.Ft boolean_t
|
|
.Fn prop_array_ensure_capacity "prop_array_t array" "unsigned int capacity"
|
|
.\"
|
|
.Ft prop_object_iterator_t
|
|
.Fn prop_array_iterator "prop_array_t array"
|
|
.\"
|
|
.Ft void
|
|
.Fn prop_array_make_immutable "prop_array_t array"
|
|
.Ft boolean_t
|
|
.Fn prop_array_mutable "prop_array_t array"
|
|
.\"
|
|
.Ft prop_object_t
|
|
.Fn prop_array_get "prop_array_t array" "unsigned int index"
|
|
.Ft boolean_t
|
|
.Fn prop_array_set "prop_array_t array" "unsigned int index" "prop_object_t obj"
|
|
.Ft boolean_t
|
|
.Fn prop_array_add "prop_array_t array" "prop_object_t obj"
|
|
.Ft void
|
|
.Fn prop_array_remove "prop_array_t array" "unsigned int index"
|
|
.\"
|
|
.Ft char *
|
|
.Fn prop_array_externalize "prop_array_t array"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_internalize "const char *xml"
|
|
.\"
|
|
.Ft boolean_t
|
|
.Fn prop_array_externalize_to_file "prop_array_t array" "const char *path"
|
|
.Ft prop_array_t
|
|
.Fn prop_array_internalize_from_file "const char *path"
|
|
.\"
|
|
.Ft boolean_t
|
|
.Fn prop_array_equals "prop_array_t array1" "prop_array_t array2"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm prop_array
|
|
family of functions operate on the array property collection object type.
|
|
An array is an ordered set; an iterated array will return objects in the
|
|
same order with which they were stored.
|
|
.Bl -tag -width "xxxxx"
|
|
.It Fn prop_array_create "void"
|
|
Create an empty array.
|
|
The array initially has no capacity.
|
|
.It Fn prop_array_create_with_capacity "unsigned int capacity"
|
|
Create an array with the capacity to store
|
|
.Fa capacity
|
|
objects.
|
|
.It Fn prop_array_copy "prop_array_t array"
|
|
Copy an array.
|
|
The new array has an initial capacity equal to the number of objects stored
|
|
in the array being copied.
|
|
The new array contains references to the original array's objects, not
|
|
copies of those objects
|
|
.Pq i.e. a shallow copy is made .
|
|
If the original array is immutable, the resulting array is also immutable.
|
|
.It Fn prop_array_copy_mutable "prop_array_t array"
|
|
Like
|
|
.Fn prop_array_copy ,
|
|
except the resulting array is always mutable.
|
|
.It Fn prop_array_capacity "prop_array_t array"
|
|
Returns the total capacity of the array, including objects already stored
|
|
in the array.
|
|
.It Fn prop_array_count "prop_array_t array"
|
|
Returns the number of objects stored in the array.
|
|
.It Fn prop_array_ensure_capacity "prop_array_t array" "unsigned int capacity"
|
|
Ensure that the array has a total capacity of
|
|
.Fa capacity ,
|
|
including objects already stored in the array.
|
|
Returns
|
|
.Dv TRUE
|
|
if the capacity of the array is greater or equal to
|
|
.Fa capacity
|
|
or if expansion of the array's capacity was successful
|
|
and
|
|
.Dv FALSE
|
|
otherwise.
|
|
.It Fn prop_array_iterator "prop_array_t array"
|
|
Create an iterator for the array.
|
|
The array is retained by the iterator.
|
|
An array iterator returns the object references stored in the array.
|
|
Storing to or removing from the array invalidates any active iterators for
|
|
the array.
|
|
.It Fn prop_array_make_immutable "prop_array_t array"
|
|
Make
|
|
.Fa array
|
|
immutable.
|
|
.It Fn prop_array_mutable "prop_array_t array"
|
|
Returns
|
|
.Dv TRUE
|
|
if the array is mutable.
|
|
.It Fn prop_array_get "prop_array_t array" "unsigned int index"
|
|
Return the object stored at the array index
|
|
.Fa index .
|
|
.It Fn prop_array_set "prop_array_t array" "unsigned int index" \
|
|
"prop_object_t obj"
|
|
Store a reference to the object
|
|
.Fa obj
|
|
at the array index
|
|
.Fa index .
|
|
This function is not allowed to create holes in the array;
|
|
the caller must either be setting the object just beyond the existing
|
|
count or replacing an already existing object reference.
|
|
The object will be retained by the array.
|
|
If an existing object reference is being replaced, that object will be
|
|
released.
|
|
Returns
|
|
.Dv TRUE
|
|
if storing the object was successful and
|
|
.Dv FALSE
|
|
otherwise.
|
|
.It Fn prop_array_add "prop_array_t array" "prop_object_t obj"
|
|
Add a reference to the object
|
|
.Fa obj
|
|
to the array, appending to the end and growing the array's capacity of
|
|
necessary.
|
|
The object will be retained by the array.
|
|
Returns
|
|
.Dv TRUE
|
|
if storing the object was successful and
|
|
.Dv FALSE
|
|
otherwise.
|
|
.It Fn prop_array_remove "prop_array_t array" "unsigned int index"
|
|
Remove the reference to the object stored at array index
|
|
.Fa index .
|
|
The object will be released and the array compacted following
|
|
the removal.
|
|
.It Fn prop_array_equals "prop_array_t array1" "prop_array_t array2"
|
|
Returns
|
|
.Dv TRUE
|
|
if the two arrays are equivalent.
|
|
Note: Objects contained in the array are compared by value, not by reference.
|
|
.It Fn prop_array_externalize "prop_array_t array"
|
|
Externalizes an array, returning a NUL-terminated buffer containing
|
|
the XML representation of the array.
|
|
The caller is responsible for freeing the returned buffer.
|
|
If converting to the external representation fails for any reason,
|
|
.Dv NULL
|
|
is returned.
|
|
.Pp
|
|
In user space, the buffer is allocated using
|
|
.Xr malloc 3 .
|
|
In the kernel, the buffer is allocated using
|
|
.Xr malloc 9
|
|
using the malloc type
|
|
.Dv M_TEMP .
|
|
.It Fn prop_array_internalize "const char *xml"
|
|
Parse the XML representation of a property list in the NUL-terminated
|
|
buffer
|
|
.Fa xml
|
|
and return the corresponding array.
|
|
Returns
|
|
.Dv NULL
|
|
if parsing fails for any reason.
|
|
.It Fn prop_array_externalize_to_file "prop_array_t array" "const char *path"
|
|
Externalizes an array and writes it to the file specified by
|
|
.Fa path .
|
|
The file is saved with the mode
|
|
.Dv 0666
|
|
as modified by the process's file creation mask
|
|
.Pq see Xr umask 3
|
|
and is written atomically.
|
|
Returns
|
|
.Dv FALSE
|
|
if externalizing or writing the array fails for any reason.
|
|
.It Fn prop_array_internalize_from_file "const char *path"
|
|
Reads the XML property list contained in the file specified by
|
|
.Fa path ,
|
|
internalizes it, and returns the corresponding array.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr prop_bool 3 ,
|
|
.Xr prop_data 3 ,
|
|
.Xr prop_dictionary 3 ,
|
|
.Xr prop_number 3 ,
|
|
.Xr prop_object 3 ,
|
|
.Xr prop_string 3 ,
|
|
.Xr proplib 3
|
|
.Sh HISTORY
|
|
The
|
|
.Nm proplib
|
|
property container object library first appeared in
|
|
.Nx 4.0 .
|