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mpv/m_config.c
Uoti Urpala fad3585ef4 options: remove CONF_OLD option flag 
The resulting semantics of this flag are weird enough that they're
unlikely to be what is wanted in any situation. Remove the flag and
convert the two options using it, -screenw and -screenh, to use
CONF_NOSAVE instead. I'm not sure why those specific options had the
flag and if any flag is really needed, but I don't want to check in
detail now and using CONF_NOSAVE should keep about the same behavior
in practice.

A bit more detail about the weird behavior this flag had:

When not using file groups, the flag had the same behavior as
CONF_NOSAVE, namely that when switching files the option would not be
reset to the global value (only possible file-specific settings were
applied). When using file groups, group-specific options would apply
to the _first two_ files in the group, but for the rest after the
first two, settings would not be reset when changing files (wtf?).
This was a result of the following sequence:
1) push higher-level settings, enter group
2) apply group-specific settings
3) push settings before applying ones specific to file 1 in group
4) apply file 1 settings, play file 1
5) pop settings to return to group settings
6) push settings before applying ones specific to file 2
7) apply file 2 settings
8) pop settings

Here the option was set at 2). 3) saved it because it had been set
after last push, so 5) restored the setting and it was used for file 2
too. However 6) no longer saved it because there had been pushes after
the original setting in 2), thus 8) no longer restored the setting and
the option was no longer forced to any particular value when playing
further files after that.
2011-01-31 21:53:05 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/// \file
/// \ingroup Config
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "talloc.h"
#ifdef MP_DEBUG
#include <assert.h>
#endif
#include "m_config.h"
#include "m_option.h"
#include "mp_msg.h"
#define MAX_PROFILE_DEPTH 20
static int parse_profile(const m_option_t *opt, const char *name,
const char *param, void *dst, int src)
{
m_config_t *config = opt->priv;
char **list = NULL;
int i, r;
if (param && !strcmp(param, "help")) {
m_profile_t *p;
if (!config->profiles) {
mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "No profiles have been defined.\n");
return M_OPT_EXIT-1;
}
mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "Available profiles:\n");
for (p = config->profiles; p; p = p->next)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\t%s\t%s\n", p->name,
p->desc ? p->desc : "");
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT-1;
}
r = m_option_type_string_list.parse(opt, name, param, &list, src);
if (r < 0)
return r;
if (!list || !list[0])
return M_OPT_INVALID;
for (i = 0; list[i]; i++)
if (!m_config_get_profile(config,list[i])) {
mp_tmsg(MSGT_CFGPARSER, MSGL_WARN, "Unknown profile '%s'.\n",
list[i]);
r = M_OPT_INVALID;
}
if (dst)
m_option_copy(opt, dst, &list);
else
m_option_free(opt, &list);
return r;
}
static void set_profile(const m_option_t *opt, void *dst, const void *src)
{
m_config_t *config = opt->priv;
m_profile_t *p;
char **list = NULL;
int i;
if (!src || !*(char***)src)
return;
m_option_copy(opt, &list, src);
for (i = 0; list[i]; i++) {
p = m_config_get_profile(config, list[i]);
if (!p)
continue;
m_config_set_profile(config, p);
}
m_option_free(opt, &list);
}
static int show_profile(m_option_t *opt, char* name, char *param)
{
m_config_t *config = opt->priv;
m_profile_t *p;
int i, j;
if (!param)
return M_OPT_MISSING_PARAM;
if (!(p = m_config_get_profile(config, param))) {
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR, "Unknown profile '%s'.\n", param);
return M_OPT_EXIT - 1;
}
if (!config->profile_depth)
mp_tmsg(MSGT_CFGPARSER, MSGL_INFO, "Profile %s: %s\n", param,
p->desc ? p->desc : "");
config->profile_depth++;
for (i = 0; i < p->num_opts; i++) {
char spc[config->profile_depth + 1];
for (j = 0; j < config->profile_depth; j++)
spc[j] = ' ';
spc[config->profile_depth] = '\0';
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "%s%s=%s\n", spc,
p->opts[2 * i], p->opts[2 * i + 1]);
if (config->profile_depth < MAX_PROFILE_DEPTH
&& !strcmp(p->opts[2*i], "profile")) {
char *e, *list = p->opts[2 * i + 1];
while ((e = strchr(list, ','))) {
int l = e-list;
char tmp[l+1];
if (!l)
continue;
memcpy(tmp, list, l);
tmp[l] = '\0';
show_profile(opt, name, tmp);
list = e+1;
}
if (list[0] != '\0')
show_profile(opt, name, list);
}
}
config->profile_depth--;
if (!config->profile_depth)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT - 1;
}
static int list_options(m_option_t *opt, char *name, char *param)
{
m_config_t *config = opt->priv;
m_config_print_option_list(config);
return M_OPT_EXIT;
}
static void m_option_save(const m_config_t *config, const m_option_t *opt,
void *dst)
{
if (opt->type->save) {
const void *src = m_option_get_ptr(opt, config->optstruct);
opt->type->save(opt, dst, src);
}
}
static void m_option_set(const m_config_t *config, const m_option_t *opt,
const void *src)
{
if (opt->type->set) {
void *dst = m_option_get_ptr(opt, config->optstruct);
opt->type->set(opt, dst, src);
}
}
static void
m_config_add_option(m_config_t *config, const m_option_t *arg, const char* prefix);
m_config_t *m_config_new(void *optstruct,
int includefunc(m_option_t *conf, char *filename))
{
m_config_t* config;
static int initialized = 0;
static m_option_type_t profile_opt_type;
static const m_option_t ref_opts[] = {
{ "profile", NULL, &profile_opt_type, CONF_NOSAVE, 0, 0, NULL },
{ "show-profile", show_profile, CONF_TYPE_PRINT_FUNC, CONF_NOCFG, 0, 0, NULL },
{ "list-options", list_options, CONF_TYPE_PRINT_FUNC, CONF_NOCFG, 0, 0, NULL },
{ NULL, NULL, NULL, 0, 0, 0, NULL }
};
int i;
config = talloc_zero(NULL, m_config_t);
config->lvl = 1; // 0 Is the defaults
if(!initialized) {
initialized = 1;
profile_opt_type = m_option_type_string_list;
profile_opt_type.parse = parse_profile;
profile_opt_type.set = set_profile;
}
m_option_t *self_opts = talloc_memdup(config, ref_opts, sizeof(ref_opts));
for (i = 0; self_opts[i].name; i++)
self_opts[i].priv = config;
m_config_register_options(config, self_opts);
if (includefunc) {
struct m_option *p = talloc_ptrtype(config, p);
*p = (struct m_option){"include", includefunc, CONF_TYPE_FUNC_PARAM,
CONF_NOSAVE, 0, 0, config};
m_config_add_option(config, p, NULL);
}
config->optstruct = optstruct;
return config;
}
void m_config_free(m_config_t* config)
{
m_config_option_t *opt;
for (opt = config->opts; opt; opt = opt->next) {
if (opt->flags & M_CFG_OPT_ALIAS)
continue;
m_config_save_slot_t *sl;
for (sl = opt->slots; sl; sl = sl->prev)
m_option_free(opt->opt, sl->data);
}
talloc_free(config);
}
void
m_config_push(m_config_t* config) {
m_config_option_t *co;
m_config_save_slot_t *slot;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 0);
#endif
config->lvl++;
for(co = config->opts ; co ; co = co->next ) {
if(co->opt->type->flags & M_OPT_TYPE_HAS_CHILD)
continue;
if(co->opt->flags & (M_OPT_GLOBAL|M_OPT_NOSAVE))
continue;
if(co->flags & M_CFG_OPT_ALIAS)
continue;
// Update the current status
m_option_save(config, co->opt, co->slots->data);
// Allocate a new slot
slot = talloc_zero_size(co, sizeof(m_config_save_slot_t) +
co->opt->type->size);
slot->lvl = config->lvl;
slot->prev = co->slots;
co->slots = slot;
m_option_copy(co->opt,co->slots->data,co->slots->prev->data);
// Reset our set flag
co->flags &= ~M_CFG_OPT_SET;
}
mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Config pushed level is now %d\n",config->lvl);
}
void
m_config_pop(m_config_t* config) {
m_config_option_t *co;
m_config_save_slot_t *slot;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 1);
#endif
for(co = config->opts ; co ; co = co->next ) {
int pop = 0;
if(co->opt->type->flags & M_OPT_TYPE_HAS_CHILD)
continue;
if(co->opt->flags & (M_OPT_GLOBAL|M_OPT_NOSAVE))
continue;
if(co->flags & M_CFG_OPT_ALIAS)
continue;
if(co->slots->lvl > config->lvl)
mp_tmsg(MSGT_CFGPARSER, MSGL_WARN,"Save slot found from lvl %d is too old: %d !!!\n",config->lvl,co->slots->lvl);
while(co->slots->lvl >= config->lvl) {
m_option_free(co->opt,co->slots->data);
slot = co->slots;
co->slots = slot->prev;
talloc_free(slot);
pop++;
}
if(pop) // We removed some ctx -> set the previous value
m_option_set(config, co->opt, co->slots->data);
}
config->lvl--;
mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Config poped level=%d\n",config->lvl);
}
static void
m_config_add_option(m_config_t *config, const m_option_t *arg, const char* prefix) {
m_config_option_t *co;
m_config_save_slot_t* sl;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 0);
assert(arg != NULL);
#endif
// Allocate a new entry for this option
co = talloc_zero_size(config, sizeof(m_config_option_t) + arg->type->size);
co->opt = arg;
// Fill in the full name
if(prefix && strlen(prefix) > 0) {
co->name = talloc_asprintf(co, "%s:%s", prefix, arg->name);
} else
co->name = arg->name;
// Option with children -> add them
if(arg->type->flags & M_OPT_TYPE_HAS_CHILD) {
const m_option_t *ol = arg->p;
int i;
co->slots = NULL;
for(i = 0 ; ol[i].name != NULL ; i++)
m_config_add_option(config,&ol[i], co->name);
} else {
m_config_option_t *i;
// Check if there is already an option pointing to this address
if(arg->p || arg->new && arg->offset >= 0) {
for(i = config->opts ; i ; i = i->next ) {
if (arg->new ? (i->opt->new && i->opt->offset == arg->offset)
: (!i->opt->new && i->opt->p == arg->p)) {
// So we don't save the same vars more than 1 time
co->slots = i->slots;
co->flags |= M_CFG_OPT_ALIAS;
break;
}
}
}
if(!(co->flags & M_CFG_OPT_ALIAS)) {
// Allocate a slot for the defaults
sl = talloc_zero_size(co, sizeof(m_config_save_slot_t) +
arg->type->size);
m_option_save(config, arg, sl->data);
// Hack to avoid too much trouble with dynamically allocated data :
// We always use a dynamic version
if ((arg->type->flags & M_OPT_TYPE_DYNAMIC)) {
char **hackptr = arg->new ? (char*)config->optstruct + arg->offset
: arg->p;
if (hackptr && *hackptr) {
*hackptr = NULL;
m_option_set(config, arg, sl->data);
}
}
sl->lvl = 0;
sl->prev = NULL;
co->slots = talloc_zero_size(co, sizeof(m_config_save_slot_t) +
arg->type->size);
co->slots->prev = sl;
co->slots->lvl = config->lvl;
m_option_copy(co->opt, co->slots->data, sl->data);
}
}
co->next = config->opts;
config->opts = co;
}
int
m_config_register_options(m_config_t *config, const m_option_t *args) {
int i;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 0);
assert(args != NULL);
#endif
for(i = 0 ; args[i].name != NULL ; i++)
m_config_add_option(config,&args[i],NULL);
return 1;
}
static m_config_option_t*
m_config_get_co(const m_config_t *config, char *arg) {
m_config_option_t *co;
for(co = config->opts ; co ; co = co->next ) {
int l = strlen(co->name) - 1;
if((co->opt->type->flags & M_OPT_TYPE_ALLOW_WILDCARD) &&
(co->name[l] == '*')) {
if(strncasecmp(co->name,arg,l) == 0)
return co;
} else if(strcasecmp(co->name,arg) == 0)
return co;
}
return NULL;
}
static int
m_config_parse_option(const m_config_t *config, char *arg, char *param, int set) {
m_config_option_t *co;
int r = 0;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 0);
assert(arg != NULL);
#endif
co = m_config_get_co(config,arg);
if(!co){
// mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Unknown option: %s\n",arg);
return M_OPT_UNKNOWN;
}
#ifdef MP_DEBUG
// This is the only mandatory function
assert(co->opt->type->parse);
#endif
// Check if this option isn't forbidden in the current mode
if((config->mode == M_CONFIG_FILE) && (co->opt->flags & M_OPT_NOCFG)) {
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,"The %s option can't be used in a config file.\n",arg);
return M_OPT_INVALID;
}
if((config->mode == M_COMMAND_LINE) && (co->opt->flags & M_OPT_NOCMD)) {
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,"The %s option can't be used on the command line.\n",arg);
return M_OPT_INVALID;
}
// During command line preparse set only pre-parse options
// Otherwise only set pre-parse option if they were not already set.
if(((config->mode == M_COMMAND_LINE_PRE_PARSE) &&
!(co->opt->flags & M_OPT_PRE_PARSE)) ||
((config->mode != M_COMMAND_LINE_PRE_PARSE) &&
(co->opt->flags & M_OPT_PRE_PARSE) && (co->flags & M_CFG_OPT_SET)))
set = 0;
// Option with children are a bit different to parse
if(co->opt->type->flags & M_OPT_TYPE_HAS_CHILD) {
char** lst = NULL;
int i,sr;
// Parse the child options
r = m_option_parse(co->opt,arg,param,&lst,M_COMMAND_LINE);
// Set them now
if(r >= 0)
for(i = 0 ; lst && lst[2*i] ; i++) {
int l = strlen(co->name) + 1 + strlen(lst[2*i]) + 1;
if(r >= 0) {
// Build the full name
char n[l];
sprintf(n,"%s:%s",co->name,lst[2*i]);
sr = m_config_parse_option(config,n,lst[2*i+1],set);
if(sr < 0){
if(sr == M_OPT_UNKNOWN){
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,"Error: option '%s' has no suboption '%s'.\n",co->name,lst[2*i]);
r = M_OPT_INVALID;
} else
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],co->name);
r = M_OPT_INVALID;
} else
r = sr;
}
}
free(lst[2*i]);
free(lst[2*i+1]);
}
free(lst);
} else
r = m_option_parse(co->opt,arg,param,set ? co->slots->data : NULL,config->mode);
// Parsing failed ?
if(r < 0)
return r;
// Set the option
if(set) {
m_option_set(config, co->opt, co->slots->data);
co->flags |= M_CFG_OPT_SET;
}
return r;
}
int
m_config_set_option(m_config_t *config, char* arg, char* param) {
mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Setting %s=%s\n",arg,param);
return m_config_parse_option(config,arg,param,1);
}
int
m_config_check_option(const m_config_t *config, char *arg, char *param) {
int r;
mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Checking %s=%s\n",arg,param);
r=m_config_parse_option(config,arg,param,0);
if(r==M_OPT_MISSING_PARAM){
mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,"Error: option '%s' must have a parameter!\n",arg);
return M_OPT_INVALID;
}
return r;
}
const m_option_t*
m_config_get_option(const m_config_t *config, char *arg) {
m_config_option_t *co;
#ifdef MP_DEBUG
assert(config != NULL);
assert(config->lvl > 0);
assert(arg != NULL);
#endif
co = m_config_get_co(config,arg);
if(co)
return co->opt;
else
return NULL;
}
void
m_config_print_option_list(const m_config_t *config) {
char min[50],max[50];
m_config_option_t* 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 m_option_t* 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);
}
m_profile_t*
m_config_get_profile(const m_config_t *config, char *name) {
m_profile_t* p;
for(p = config->profiles ; p ; p = p->next)
if(!strcmp(p->name,name)) return p;
return NULL;
}
m_profile_t*
m_config_add_profile(m_config_t* config, char* name) {
m_profile_t* p = m_config_get_profile(config,name);
if(p) return p;
p = talloc_zero(config, m_profile_t);
p->name = talloc_strdup(p, name);
p->next = config->profiles;
config->profiles = p;
return p;
}
void
m_profile_set_desc(m_profile_t* p, char* desc) {
talloc_free(p->desc);
p->desc = talloc_strdup(p, desc);
}
int
m_config_set_profile_option(m_config_t* config, m_profile_t* p,
char* name, char* val) {
int i = m_config_check_option(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(m_config_t* config, m_profile_t* 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_option(config,p->opts[2*i],p->opts[2*i+1]);
config->profile_depth--;
config->mode = prev_mode;
}
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