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70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
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* virsexpr.h : S-Expression interfaces needed to communicate with the Xen Daemon
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*
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* Copyright (C) 2012 Red Hat, Inc.
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* Copyright (C) 2005 Anthony Liguori <aliguori@us.ibm.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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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 "virbuffer.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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int sexpr2string(const struct sexpr *sexpr, virBufferPtr 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_FMT_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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int sexpr_int(const struct sexpr *sexpr, const char *name);
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double sexpr_float(const struct sexpr *sexpr, const char *name);
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uint64_t sexpr_u64(const struct sexpr *sexpr, const char *name);
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#endif
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