100 lines
3.0 KiB
Groff
100 lines
3.0 KiB
Groff
.\"
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.\" Copyright (c) 1998 Jordan Hubbard
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.\"
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\" "
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.Dd October 7, 1998
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.Os
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.Dt PROPERTIES 3
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.Sh NAME
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.Nm properties_read ,
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.Nm propery_find ,
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.Nm properties_free
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.Nd "functions to allow creating simple property lists from ASCII file data"
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.Sh LIBRARY
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.Lb libutil
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.Sh SYNOPSIS
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.In sys/types.h
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.In libutil.h
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.Ft properties
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.Fn properties_read "int fd"
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.Ft char *
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.Fn property_find "properties list" "const char *name"
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.Ft void
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.Fn properties_free "properties list"
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.Sh DESCRIPTION
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.Bd -literal
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typedef struct _properties {
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struct _properties *next;
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char *name;
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char *value;
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} *properties;
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.Ed
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.Pp
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The function
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.Fn properties_read
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reads
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.Fa name = value
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pairs from the file descriptor passed in
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.Fa fd
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and returns the head of a new property list, assuming that the
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file's contents have been parsed properly, or NULL in case
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of error.
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.Pp
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The
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.Fn property_find
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function returns the associated value string for the property named
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.Fa name
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if found, otherwise NULL.
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The value returned may be up to
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.Dv PROPERTY_MAX_VALUE
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bytes in length.
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.Pp
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The
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.Fn properties_free
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function is used to free the structure returned by
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.Fn properties_read
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when it is no longer needed.
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.Sh FILE FORMAT
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Each property in the file is assumed to have the format of
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.Fa name = value
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where
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.Fa name
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is an alphanumeric string (and any punctuation not including the `=' character)
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and
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.Fa value
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is an arbitary string of text terminated by a newline character.
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If newlines
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are desired, the entire value should be enclosed in { } (curly-bracket)
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characters.
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Any line beginning with a # or ; character is assumed to
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be a comment and will be ignored.
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.Sh SEE ALSO
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.Xr auth_getval 3
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.Sh BUGS
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Simplistic.
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.Sh AUTHORS
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.An Jordan Hubbard
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