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56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
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* sexpr.h : S-Expression interfaces needed to communicate with the Xen Daemon
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*
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* Copyright (C) 2005
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*
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License. See the file COPYING.LIB in the main directory of this
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* archive for more details.
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*/
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#ifndef _LIBVIR_SEXPR_H_
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#define _LIBVIR_SEXPR_H_
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#include "internal.h"
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#include <sys/types.h>
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enum sexpr_type {
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SEXPR_NIL,
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SEXPR_CONS,
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SEXPR_VALUE,
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};
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struct sexpr {
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enum sexpr_type kind;
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union {
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struct {
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struct sexpr *car;
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struct sexpr *cdr;
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} s;
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char *value;
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} u;
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};
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/* conversion to/from strings */
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size_t sexpr2string(const struct sexpr *sexpr, char *buffer, size_t n_buffer);
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struct sexpr *string2sexpr(const char *buffer);
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/* constructors and destructors */
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struct sexpr *sexpr_nil(void);
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struct sexpr *sexpr_string(const char *str, ssize_t len);
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struct sexpr *sexpr_cons(const struct sexpr *car, const struct sexpr *cdr);
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struct sexpr *sexpr_append(struct sexpr *lst, const struct sexpr *item);
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void sexpr_free(struct sexpr *sexpr);
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/* lookup in S-Expressions */
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const char *sexpr_node(const struct sexpr *sexpr, const char *node);
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int sexpr_node_copy(const struct sexpr *sexpr, const char *node, char **dst);
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const char *sexpr_fmt_node(const struct sexpr *sexpr, const char *fmt, ...)
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ATTRIBUTE_FORMAT(printf,2,3);
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struct sexpr *sexpr_lookup(const struct sexpr *sexpr, const char *node);
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int sexpr_has(const struct sexpr *sexpr, const char *node);
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#endif
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