xref: /freebsd/lib/libutil/property.3 (revision f167d7fb3e81bd884d7b76b78f1216c5afc5db3d)
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26.\" $FreeBSD$
27.\" "
28.Dd October 7, 1998
29.Os
30.Dt PROPERTIES 3
31.Sh NAME
32.Nm properties_read ,
33.Nm propery_find ,
34.Nm properties_free
35.Nd "functions to allow creating simple property lists from ASCII file data"
36.Sh LIBRARY
37.Lb libutil
38.Sh SYNOPSIS
39.Fd #include <sys/types.h>
40.Fd #include <libutil.h>
41.Ft properties
42.Fn properties_read "int fd"
43.Ft char *
44.Fn property_find "properties list" "const char *name"
45.Ft void
46.Fn properties_free "properties list"
47.Sh DESCRIPTION
48.nf
49typedef struct _properties {
50	struct _properties *next;
51	char *name;
52	char *value;
53} *properties;
54.fi
55
56The function
57.Fn properties_read
58reads
59.Fa name = value
60pairs from the file descriptor passed in
61.Fa fd
62and returns the head of a new property list, assuming that the
63file's contents have been parsed properly, or NULL in case
64of error.
65.Pp
66.Fn property_find
67Returns the associated value string for the property named
68.Fa name
69if found, otherwise NULL.
70.Pp
71.Fn properties_free
72is used to free the structure returned by
73.Fn properties_read
74when it is no longer needed.
75.Pp
76.Sh FILE FORMAT
77Each property in the file is assumed to have the format of
78.Fa name = value
79where
80.Fa name
81is an alphanumeric string (and any punctuation not including the `=' character)
82and
83.Fa value
84is an arbitary string of text terminated by a newline character.  If newlines
85are desired, the entire value should be enclosed in { } (curly-bracket)
86characters.  Any line beginning with a # or ; character is assumed to
87be a comment and will be ignored.
88.Sh SEE ALSO
89.Xr auth_getval 3
90.Sh BUGS
91Simplistic.
92.Sh AUTHORS
93.An Jordan Hubbard
94