mirror of
https://github.com/mpv-player/mpv
synced 2024-08-24 07:21:49 +02:00
645 lines
21 KiB
C
645 lines
21 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/// \file
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/// \ingroup Config
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <assert.h>
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#include <stdbool.h>
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#include "talloc.h"
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#include "m_config.h"
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#include "m_option.h"
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#include "mp_msg.h"
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#define MAX_PROFILE_DEPTH 20
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static int parse_include(struct m_config *config, struct bstr param, bool set)
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{
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if (param.len == 0)
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return M_OPT_MISSING_PARAM;
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if (!set)
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return 1;
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char *filename = bstrdup0(NULL, param);
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config->includefunc(config, filename);
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talloc_free(filename);
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return 1;
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}
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static int parse_profile(struct m_config *config, const struct m_option *opt,
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struct bstr name, struct bstr param, bool set)
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{
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if (!bstrcmp0(param, "help")) {
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struct m_profile *p;
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if (!config->profiles) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_INFO,
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"No profiles have been defined.\n");
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return M_OPT_EXIT - 1;
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}
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mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "Available profiles:\n");
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for (p = config->profiles; p; p = p->next)
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mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\t%s\t%s\n", p->name,
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p->desc ? p->desc : "");
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mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
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return M_OPT_EXIT - 1;
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}
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char **list = NULL;
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int r = m_option_type_string_list.parse(opt, name, param, &list);
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if (r < 0)
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return r;
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if (!list || !list[0])
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return M_OPT_INVALID;
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for (int i = 0; list[i]; i++) {
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struct m_profile *p = m_config_get_profile(config, list[i]);
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if (!p) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_WARN, "Unknown profile '%s'.\n",
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list[i]);
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r = M_OPT_INVALID;
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} else if (set)
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m_config_set_profile(config, p);
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}
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m_option_free(opt, &list);
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return r;
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}
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static int show_profile(struct m_option *opt, char *name, char *param)
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{
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struct m_config *config = opt->priv;
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struct m_profile *p;
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int i, j;
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if (!param)
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return M_OPT_MISSING_PARAM;
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if (!(p = m_config_get_profile(config, param))) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR, "Unknown profile '%s'.\n", param);
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return M_OPT_EXIT - 1;
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}
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if (!config->profile_depth)
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mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "Profile %s: %s\n", param,
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p->desc ? p->desc : "");
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config->profile_depth++;
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for (i = 0; i < p->num_opts; i++) {
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char spc[config->profile_depth + 1];
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for (j = 0; j < config->profile_depth; j++)
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spc[j] = ' ';
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spc[config->profile_depth] = '\0';
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mp_msg(MSGT_CFGPARSER, MSGL_INFO, "%s%s=%s\n", spc,
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p->opts[2 * i], p->opts[2 * i + 1]);
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if (config->profile_depth < MAX_PROFILE_DEPTH
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&& !strcmp(p->opts[2*i], "profile")) {
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char *e, *list = p->opts[2 * i + 1];
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while ((e = strchr(list, ','))) {
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int l = e - list;
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char tmp[l+1];
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if (!l)
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continue;
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memcpy(tmp, list, l);
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tmp[l] = '\0';
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show_profile(opt, name, tmp);
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list = e + 1;
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}
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if (list[0] != '\0')
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show_profile(opt, name, list);
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}
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}
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config->profile_depth--;
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if (!config->profile_depth)
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mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
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return M_OPT_EXIT - 1;
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}
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static int list_options(struct m_option *opt, char *name, char *param)
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{
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struct m_config *config = opt->priv;
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m_config_print_option_list(config);
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return M_OPT_EXIT;
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}
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// The memcpys are supposed to work around the struct aliasing violation,
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// that would result if we just dereferenced a void** (where the void** is
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// actually casted from struct some_type* ).
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static void *substruct_read_ptr(void *ptr)
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{
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void *res;
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memcpy(&res, ptr, sizeof(void*));
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return res;
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}
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static void substruct_write_ptr(void *ptr, void *val)
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{
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memcpy(ptr, &val, sizeof(void*));
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}
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static void m_config_add_option(struct m_config *config,
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struct m_config_option *parent,
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const struct m_option *arg);
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static int config_destroy(void *p)
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{
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struct m_config *config = p;
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for (struct m_config_option *copt = config->opts; copt; copt = copt->next) {
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if (copt->alias_owner)
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continue;
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if (copt->opt->type->flags & M_OPT_TYPE_DYNAMIC) {
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m_option_free(copt->opt, copt->data);
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}
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if (copt->global_backup)
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m_option_free(copt->opt, copt->global_backup);
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}
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return 0;
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}
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struct m_config *m_config_simple(void *optstruct)
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{
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struct m_config *config = talloc_struct(NULL, struct m_config, {
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.optstruct = optstruct,
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});
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talloc_set_destructor(config, config_destroy);
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return config;
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}
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struct m_config *m_config_new(void *optstruct,
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int includefunc(struct m_config *conf,
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char *filename))
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{
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static const struct m_option ref_opts[] = {
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{ "profile", NULL, CONF_TYPE_STRING_LIST, 0, 0, 0, NULL },
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{ "show-profile", show_profile, &m_option_type_print_func_param,
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CONF_NOCFG },
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{ "list-options", list_options, CONF_TYPE_PRINT_FUNC, CONF_NOCFG },
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{ NULL }
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};
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struct m_config *config = m_config_simple(optstruct);
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struct m_option *self_opts = talloc_memdup(config, ref_opts,
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sizeof(ref_opts));
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for (int i = 1; self_opts[i].name; i++)
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self_opts[i].priv = config;
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m_config_register_options(config, self_opts);
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if (includefunc) {
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struct m_option *p = talloc_ptrtype(config, p);
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*p = (struct m_option){
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"include", NULL, CONF_TYPE_STRING, 0,
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};
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m_config_add_option(config, NULL, p);
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config->includefunc = includefunc;
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}
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return config;
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}
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void m_config_free(struct m_config *config)
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{
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talloc_free(config);
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}
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static void ensure_backup(struct m_config *config, struct m_config_option *co)
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{
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while (co->alias_owner)
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co = co->alias_owner;
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if (!config->file_local_mode)
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return;
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if (co->opt->type->flags & M_OPT_TYPE_HAS_CHILD)
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return;
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if (co->opt->flags & M_OPT_GLOBAL)
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return;
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if (co->global_backup)
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return;
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co->global_backup = talloc_zero_size(co, co->opt->type->size);
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m_option_copy(co->opt, co->global_backup, co->data);
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}
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void m_config_enter_file_local(struct m_config *config)
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{
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assert(!config->file_local_mode);
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config->file_local_mode = true;
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for (struct m_config_option *co = config->opts; co; co = co->next) {
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if (co->opt->flags & M_OPT_LOCAL)
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ensure_backup(config, co);
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}
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}
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void m_config_leave_file_local(struct m_config *config)
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{
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assert(config->file_local_mode);
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config->file_local_mode = false;
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for (struct m_config_option *co = config->opts; co; co = co->next) {
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if (co->global_backup) {
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m_option_copy(co->opt, co->data, co->global_backup);
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m_option_free(co->opt, co->global_backup);
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talloc_free(co->global_backup);
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co->global_backup = NULL;
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}
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}
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}
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static void add_options(struct m_config *config,
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struct m_config_option *parent,
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const struct m_option *defs)
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{
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for (int i = 0; defs[i].name; i++)
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m_config_add_option(config, parent, defs + i);
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}
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static void m_config_add_option(struct m_config *config,
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struct m_config_option *parent,
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const struct m_option *arg)
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{
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struct m_config_option *co;
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assert(config != NULL);
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assert(arg != NULL);
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// Allocate a new entry for this option
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co = talloc_zero(config, struct m_config_option);
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co->opt = arg;
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void *optstruct = config->optstruct;
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if (parent && (parent->opt->type->flags & M_OPT_TYPE_USE_SUBSTRUCT))
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optstruct = substruct_read_ptr(parent->data);
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co->data = arg->new ? (char *)optstruct + arg->offset : arg->p;
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if (parent) {
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// Merge case: pretend it has no parent (note that we still must follow
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// the "real" parent for accessing struct fields)
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if (parent->opt->flags & M_OPT_MERGE)
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co->parent = parent->parent;
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else
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co->parent = parent;
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}
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// Fill in the full name
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if (co->parent) {
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const char *sep = (co->parent->opt->flags & M_OPT_PREFIXED) ? "-" : ":";
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co->name = talloc_asprintf(co, "%s%s%s", co->parent->name, sep,
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arg->name);
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} else
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co->name = (char *)arg->name;
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// Option with children -> add them
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if (arg->type->flags & M_OPT_TYPE_HAS_CHILD) {
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if (arg->type->flags & M_OPT_TYPE_USE_SUBSTRUCT) {
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const struct m_sub_options *subopts = arg->priv;
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if (!substruct_read_ptr(co->data)) {
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void *subdata = m_config_alloc_struct(config, subopts);
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substruct_write_ptr(co->data, subdata);
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}
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add_options(config, co, subopts->opts);
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} else {
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const struct m_option *sub = arg->p;
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add_options(config, co, sub);
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}
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} else {
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// Check if there is already an option pointing to this address
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if (co->data) {
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for (struct m_config_option *i = config->opts; i; i = i->next) {
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if (co->data == i->data) {
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// So we don't save the same vars more than 1 time
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co->alias_owner = i;
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break;
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}
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}
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}
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if (co->alias_owner) {
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assert(!arg->defval);
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} else {
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if (arg->defval) {
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// Target data in optstruct is supposed to be cleared (consider
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// m_option freeing previously set dynamic data).
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m_option_copy(arg, co->data, arg->defval);
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} else if (arg->type->flags & M_OPT_TYPE_DYNAMIC) {
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// Initialize dynamically managed fields from static data (like
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// string options): copy the option into temporary memory,
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// clear the original option (to stop m_option from freeing the
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// static data), copy it back.
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if (co->data) {
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union m_option_value temp = {0};
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m_option_copy(arg, &temp, co->data);
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memset(co->data, 0, arg->type->size);
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m_option_copy(arg, co->data, &temp);
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m_option_free(arg, &temp);
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}
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}
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}
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}
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// pretend that merge options don't exist (only their children matter)
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if (!(arg->flags & M_OPT_MERGE)) {
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co->next = config->opts;
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config->opts = co;
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}
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}
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int m_config_register_options(struct m_config *config,
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const struct m_option *args)
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{
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assert(config != NULL);
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assert(args != NULL);
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add_options(config, NULL, args);
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return 1;
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}
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struct m_config_option *m_config_get_co(const struct m_config *config,
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struct bstr name)
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{
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struct m_config_option *co;
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for (co = config->opts; co; co = co->next) {
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struct bstr coname = bstr0(co->name);
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if ((co->opt->type->flags & M_OPT_TYPE_ALLOW_WILDCARD)
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&& bstr_endswith0(coname, "*")) {
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coname.len--;
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if (bstrcasecmp(bstr_splice(name, 0, coname.len), coname) == 0)
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return co;
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} else if (bstrcasecmp(coname, name) == 0)
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return co;
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}
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return NULL;
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}
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static int parse_subopts(struct m_config *config, void *optstruct, char *name,
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char *prefix, struct bstr param, bool set);
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static int m_config_parse_option(struct m_config *config, void *optstruct,
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struct bstr name, struct bstr param, bool set)
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{
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assert(config != NULL);
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assert(name.len != 0);
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struct m_config_option *co = m_config_get_co(config, name);
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if (!co)
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return M_OPT_UNKNOWN;
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// This is the only mandatory function
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assert(co->opt->type->parse);
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// Check if this option isn't forbidden in the current mode
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if ((config->mode == M_CONFIG_FILE) && (co->opt->flags & M_OPT_NOCFG)) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
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"The %.*s option can't be used in a config file.\n",
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BSTR_P(name));
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return M_OPT_INVALID;
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}
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if ((config->mode == M_COMMAND_LINE) && (co->opt->flags & M_OPT_NOCMD)) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
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"The %.*s option can't be used on the command line.\n",
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BSTR_P(name));
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return M_OPT_INVALID;
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}
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if (config->file_local_mode && (co->opt->flags & M_OPT_GLOBAL)) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
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"The %.*s option is global and can't be set per-file.\n",
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BSTR_P(name));
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return M_OPT_INVALID;
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}
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if (config->includefunc && !bstrcmp0(name, "include")) {
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return parse_include(config, param, set);
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} else if (!bstrcmp0(name, "profile"))
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return parse_profile(config, co->opt, name, param, set);
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// Option with children are a bit different to parse
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if (co->opt->type->flags & M_OPT_TYPE_HAS_CHILD) {
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char prefix[110];
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assert(strlen(co->name) < 100);
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sprintf(prefix, "%s:", co->name);
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return parse_subopts(config, optstruct, co->name, prefix, param, set);
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}
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if (set)
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ensure_backup(config, co);
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return m_option_parse(co->opt, name, param, set ? co->data : NULL);
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}
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static int parse_subopts(struct m_config *config, void *optstruct, char *name,
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char *prefix, struct bstr param, bool set)
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{
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char **lst = NULL;
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// Split the argument into child options
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int r = m_option_type_subconfig.parse(NULL, bstr0(""), param, &lst);
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if (r < 0)
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return r;
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// Parse the child options
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for (int i = 0; lst && lst[2 * i]; i++) {
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// Build the full name
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char n[110];
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if (snprintf(n, 110, "%s%s", prefix, lst[2 * i]) > 100)
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abort();
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if (!m_config_get_option(config, bstr0(n))) {
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if (strncmp(lst[2 * i], "no-", 3))
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goto nosubopt;
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snprintf(n, 110, "%s%s", prefix, lst[2 * i] + 3);
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const struct m_option *o = m_config_get_option(config, bstr0(n));
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if (!o || o->type != &m_option_type_flag) {
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nosubopt:
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
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"Error: option '%s' has no suboption '%s'.\n",
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name, lst[2 * i]);
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r = M_OPT_INVALID;
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break;
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}
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if (lst[2 * i + 1]) {
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mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
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"A --no-* option can't take parameters: "
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"%s=%s\n", lst[2 * i], lst[2 * i + 1]);
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r = M_OPT_INVALID;
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break;
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}
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lst[2 * i + 1] = "no";
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}
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int sr = m_config_parse_option(config, optstruct, bstr0(n),
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bstr0(lst[2 * i + 1]), set);
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if (sr < 0) {
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if (sr == M_OPT_MISSING_PARAM) {
|
|
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
|
|
"Error: suboption '%s' of '%s' must have "
|
|
"a parameter!\n", lst[2 * i], name);
|
|
r = M_OPT_INVALID;
|
|
} else
|
|
r = sr;
|
|
break;
|
|
}
|
|
}
|
|
talloc_free(lst);
|
|
return r;
|
|
}
|
|
|
|
int m_config_set_option(struct m_config *config, struct bstr name,
|
|
struct bstr param)
|
|
{
|
|
mp_msg(MSGT_CFGPARSER, MSGL_DBG2, "Setting %.*s=%.*s\n", BSTR_P(name),
|
|
BSTR_P(param));
|
|
return m_config_parse_option(config, config->optstruct, name, param, true);
|
|
}
|
|
|
|
int m_config_check_option(struct m_config *config, struct bstr name,
|
|
struct bstr param)
|
|
{
|
|
int r;
|
|
mp_msg(MSGT_CFGPARSER, MSGL_DBG2, "Checking %.*s=%.*s\n", BSTR_P(name),
|
|
BSTR_P(param));
|
|
r = m_config_parse_option(config, NULL, name, param, 0);
|
|
if (r == M_OPT_MISSING_PARAM) {
|
|
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
|
|
"Error: option '%.*s' must have a parameter!\n", BSTR_P(name));
|
|
return M_OPT_INVALID;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
int m_config_parse_suboptions(struct m_config *config, char *name,
|
|
char *subopts)
|
|
{
|
|
if (!subopts || !*subopts)
|
|
return 0;
|
|
return parse_subopts(config, config->optstruct, name, "", bstr0(subopts),
|
|
true);
|
|
}
|
|
|
|
|
|
const struct m_option *m_config_get_option(const struct m_config *config,
|
|
struct bstr name)
|
|
{
|
|
struct m_config_option *co;
|
|
|
|
assert(config != NULL);
|
|
|
|
co = m_config_get_co(config, name);
|
|
if (co)
|
|
return co->opt;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
void m_config_print_option_list(const struct m_config *config)
|
|
{
|
|
char min[50], max[50];
|
|
struct m_config_option *co;
|
|
int count = 0;
|
|
|
|
if (!config->opts)
|
|
return;
|
|
|
|
mp_tmsg(MSGT_CFGPARSER, MSGL_INFO,
|
|
"\n Name Type Min Max Global CL Cfg\n\n");
|
|
for (co = config->opts; co; co = co->next) {
|
|
const struct m_option *opt = co->opt;
|
|
if (opt->type->flags & M_OPT_TYPE_HAS_CHILD)
|
|
continue;
|
|
if (opt->flags & M_OPT_MIN)
|
|
sprintf(min, "%-8.0f", opt->min);
|
|
else
|
|
strcpy(min, "No");
|
|
if (opt->flags & M_OPT_MAX)
|
|
sprintf(max, "%-8.0f", opt->max);
|
|
else
|
|
strcpy(max, "No");
|
|
mp_msg(MSGT_CFGPARSER, MSGL_INFO,
|
|
" %-20.20s %-15.15s %-10.10s %-10.10s %-3.3s %-3.3s %-3.3s\n",
|
|
co->name,
|
|
co->opt->type->name,
|
|
min,
|
|
max,
|
|
opt->flags & CONF_GLOBAL ? "Yes" : "No",
|
|
opt->flags & CONF_NOCMD ? "No" : "Yes",
|
|
opt->flags & CONF_NOCFG ? "No" : "Yes");
|
|
count++;
|
|
}
|
|
mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "\nTotal: %d options\n", count);
|
|
}
|
|
|
|
struct m_profile *m_config_get_profile(const struct m_config *config,
|
|
char *name)
|
|
{
|
|
struct m_profile *p;
|
|
for (p = config->profiles; p; p = p->next)
|
|
if (!strcmp(p->name, name))
|
|
return p;
|
|
return NULL;
|
|
}
|
|
|
|
struct m_profile *m_config_add_profile(struct m_config *config, char *name)
|
|
{
|
|
struct m_profile *p = m_config_get_profile(config, name);
|
|
if (p)
|
|
return p;
|
|
p = talloc_zero(config, struct m_profile);
|
|
p->name = talloc_strdup(p, name);
|
|
p->next = config->profiles;
|
|
config->profiles = p;
|
|
return p;
|
|
}
|
|
|
|
void m_profile_set_desc(struct m_profile *p, char *desc)
|
|
{
|
|
talloc_free(p->desc);
|
|
p->desc = talloc_strdup(p, desc);
|
|
}
|
|
|
|
int m_config_set_profile_option(struct m_config *config, struct m_profile *p,
|
|
char *name, char *val)
|
|
{
|
|
int i = m_config_check_option0(config, name, val);
|
|
if (i < 0)
|
|
return i;
|
|
p->opts = talloc_realloc(p, p->opts, char *, 2 * (p->num_opts + 2));
|
|
p->opts[p->num_opts * 2] = talloc_strdup(p, name);
|
|
p->opts[p->num_opts * 2 + 1] = talloc_strdup(p, val);
|
|
p->num_opts++;
|
|
p->opts[p->num_opts * 2] = p->opts[p->num_opts * 2 + 1] = NULL;
|
|
return 1;
|
|
}
|
|
|
|
void m_config_set_profile(struct m_config *config, struct m_profile *p)
|
|
{
|
|
int i;
|
|
if (config->profile_depth > MAX_PROFILE_DEPTH) {
|
|
mp_tmsg(MSGT_CFGPARSER, MSGL_WARN,
|
|
"WARNING: Profile inclusion too deep.\n");
|
|
return;
|
|
}
|
|
int prev_mode = config->mode;
|
|
config->mode = M_CONFIG_FILE;
|
|
config->profile_depth++;
|
|
for (i = 0; i < p->num_opts; i++)
|
|
m_config_set_option0(config, p->opts[2 * i], p->opts[2 * i + 1]);
|
|
config->profile_depth--;
|
|
config->mode = prev_mode;
|
|
}
|
|
|
|
void *m_config_alloc_struct(void *talloc_parent,
|
|
const struct m_sub_options *subopts)
|
|
{
|
|
void *substruct = talloc_zero_size(talloc_parent, subopts->size);
|
|
if (subopts->defaults)
|
|
memcpy(substruct, subopts->defaults, subopts->size);
|
|
return substruct;
|
|
}
|