/* * Commandline option parsing functions * * Copyright (c) 2003-2008 Fabrice Bellard * Copyright (c) 2009 Kevin Wolf * * 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 #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); QemuOpts *qemu_opts_create_nofail(QemuOptsList *list); 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