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/*

 * Commandline option parsing functions

 *

 * Copyright (c) 2003-2008 Fabrice Bellard

 * Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com>

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#ifndef QEMU_OPTIONS_H

#define QEMU_OPTIONS_H

#include <stdint.h>

#include "qemu-queue.h"

#include "error.h"

#include "qdict.h"

enum QEMUOptionParType {

    OPT_FLAG,

    OPT_NUMBER,

    OPT_SIZE,

    OPT_STRING,

};

typedef struct QEMUOptionParameter {

    const char *name;

    enum QEMUOptionParType type;

    union {

        uint64_t n;

        char* s;

    } value;

    const char *help;

} QEMUOptionParameter;

const char *get_opt_name(char *buf, int buf_size, const char *p, char delim);

const char *get_opt_value(char *buf, int buf_size, const char *p);

int get_next_param_value(char *buf, int buf_size,

                         const char *tag, const char **pstr);

int get_param_value(char *buf, int buf_size,

                    const char *tag, const char *str);

int check_params(char *buf, int buf_size,

                 const char * const *params, const char *str);

/*

 * The following functions take a parameter list as input. This is a pointer to

 * the first element of a QEMUOptionParameter array which is terminated by an

 * entry with entry->name == NULL.

 */

QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list,

    const char *name);

int set_option_parameter(QEMUOptionParameter *list, const char *name,

    const char *value);

int set_option_parameter_int(QEMUOptionParameter *list, const char *name,

    uint64_t value);

QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest,

    QEMUOptionParameter *list);

QEMUOptionParameter *parse_option_parameters(const char *param,

    QEMUOptionParameter *list, QEMUOptionParameter *dest);

void free_option_parameters(QEMUOptionParameter *list);

void print_option_parameters(QEMUOptionParameter *list);

void print_option_help(QEMUOptionParameter *list);

/* ------------------------------------------------------------------ */

typedef struct QemuOpt QemuOpt;

typedef struct QemuOpts QemuOpts;

typedef struct QemuOptsList QemuOptsList;

enum QemuOptType {

    QEMU_OPT_STRING = 0,  /* no parsing (use string as-is)                        */

    QEMU_OPT_BOOL,        /* on/off                                               */

    QEMU_OPT_NUMBER,      /* simple number                                        */

    QEMU_OPT_SIZE,        /* size, accepts (K)ilo, (M)ega, (G)iga, (T)era postfix */

};

typedef struct QemuOptDesc {

    const char *name;

    enum QemuOptType type;

    const char *help;

} QemuOptDesc;

struct QemuOptsList {

    const char *name;

    const char *implied_opt_name;

    bool merge_lists;  /* Merge multiple uses of option into a single list? */

    QTAILQ_HEAD(, QemuOpts) head;

    QemuOptDesc desc[];

};

const char *qemu_opt_get(QemuOpts *opts, const char *name);

/**

 * qemu_opt_has_help_opt:

 * @opts: options to search for a help request

 *

 * Check whether the options specified by @opts include one of the

 * standard strings which indicate that the user is asking for a

 * list of the valid values for a command line option (as defined

 * by is_help_option()).

 *

 * Returns: true if @opts includes 'help' or equivalent.

 */

bool qemu_opt_has_help_opt(QemuOpts *opts);

bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);

uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);

uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);

int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);

void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,

                      Error **errp);

int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val);

typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque);

int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,

                     int abort_on_failure);

QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id);

QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id,

                           int fail_if_exists, Error **errp);

void qemu_opts_reset(QemuOptsList *list);

void qemu_opts_loc_restore(QemuOpts *opts);

int qemu_opts_set(QemuOptsList *list, const char *id,

                  const char *name, const char *value);

const char *qemu_opts_id(QemuOpts *opts);

void qemu_opts_del(QemuOpts *opts);

void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp);

int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname);

QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, int permit_abbrev);

void qemu_opts_set_defaults(QemuOptsList *list, const char *params,

                            int permit_abbrev);

QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,

                               Error **errp);

QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict);

typedef int (*qemu_opts_loopfunc)(QemuOpts *opts, void *opaque);

int qemu_opts_print(QemuOpts *opts, void *dummy);

int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,

                      int abort_on_failure);

#endif