2 * Commandline option parsing functions
4 * Copyright (c) 2003-2008 Fabrice Bellard
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #ifndef QEMU_OPTIONS_H
27 #define QEMU_OPTIONS_H
30 #include "qemu/queue.h"
31 #include "qapi/error.h"
32 #include "qapi/qmp/qdict.h"
34 enum QEMUOptionParType {
41 typedef struct QEMUOptionParameter {
43 enum QEMUOptionParType type;
49 } QEMUOptionParameter;
52 const char *get_opt_name(char *buf, int buf_size, const char *p, char delim);
53 const char *get_opt_value(char *buf, int buf_size, const char *p);
54 int get_next_param_value(char *buf, int buf_size,
55 const char *tag, const char **pstr);
56 int get_param_value(char *buf, int buf_size,
57 const char *tag, const char *str);
61 * The following functions take a parameter list as input. This is a pointer to
62 * the first element of a QEMUOptionParameter array which is terminated by an
63 * entry with entry->name == NULL.
66 QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list,
68 int set_option_parameter(QEMUOptionParameter *list, const char *name,
70 int set_option_parameter_int(QEMUOptionParameter *list, const char *name,
72 QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest,
73 QEMUOptionParameter *list);
74 QEMUOptionParameter *parse_option_parameters(const char *param,
75 QEMUOptionParameter *list, QEMUOptionParameter *dest);
76 void free_option_parameters(QEMUOptionParameter *list);
77 void print_option_parameters(QEMUOptionParameter *list);
78 void print_option_help(QEMUOptionParameter *list);
80 /* ------------------------------------------------------------------ */
82 typedef struct QemuOpt QemuOpt;
83 typedef struct QemuOpts QemuOpts;
84 typedef struct QemuOptsList QemuOptsList;
87 QEMU_OPT_STRING = 0, /* no parsing (use string as-is) */
88 QEMU_OPT_BOOL, /* on/off */
89 QEMU_OPT_NUMBER, /* simple number */
90 QEMU_OPT_SIZE, /* size, accepts (K)ilo, (M)ega, (G)iga, (T)era postfix */
93 typedef struct QemuOptDesc {
95 enum QemuOptType type;
101 const char *implied_opt_name;
102 bool merge_lists; /* Merge multiple uses of option into a single list? */
103 QTAILQ_HEAD(, QemuOpts) head;
107 const char *qemu_opt_get(QemuOpts *opts, const char *name);
109 * qemu_opt_has_help_opt:
110 * @opts: options to search for a help request
112 * Check whether the options specified by @opts include one of the
113 * standard strings which indicate that the user is asking for a
114 * list of the valid values for a command line option (as defined
115 * by is_help_option()).
117 * Returns: true if @opts includes 'help' or equivalent.
119 bool qemu_opt_has_help_opt(QemuOpts *opts);
120 bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);
121 uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
122 uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
123 int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
124 void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
126 int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val);
127 int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val);
128 typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque);
129 int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,
130 int abort_on_failure);
132 QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id);
133 QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id,
134 int fail_if_exists, Error **errp);
135 QemuOpts *qemu_opts_create_nofail(QemuOptsList *list);
136 void qemu_opts_reset(QemuOptsList *list);
137 void qemu_opts_loc_restore(QemuOpts *opts);
138 int qemu_opts_set(QemuOptsList *list, const char *id,
139 const char *name, const char *value);
140 const char *qemu_opts_id(QemuOpts *opts);
141 void qemu_opts_del(QemuOpts *opts);
142 void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp);
143 int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname);
144 QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, int permit_abbrev);
145 void qemu_opts_set_defaults(QemuOptsList *list, const char *params,
147 QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
149 QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict);
150 void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp);
152 typedef int (*qemu_opts_loopfunc)(QemuOpts *opts, void *opaque);
153 int qemu_opts_print(QemuOpts *opts, void *dummy);
154 int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
155 int abort_on_failure);