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mpv/m_config.c
Uoti Urpala bb12a33f9a options: Make dynamic dup hack work with new options
The option system has a hack that converts default values (potentially
constants) of dynamically allocated options to allocated ones when the
options are first added to the config system, so that all values can
be equally freed later. Make this work with new-style options in the
option struct too.
2008-04-30 19:34:48 +03:00

607 lines
16 KiB
C

/// \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"
#include "help_mp.h"
#define MAX_PROFILE_DEPTH 20
static int
parse_profile(const m_option_t *opt, const char *name, char *param, void *dst, int src);
static void
set_profile(const m_option_t *opt, void* dst, void* src);
static int
show_profile(m_option_t *opt, char* name, char *param);
static void
m_config_add_option(m_config_t *config, const m_option_t *arg, const char* prefix);
static int
list_options(m_option_t *opt, char* name, char *param);
static void m_option_save(const m_config_t *config, const m_option_t *opt,
void *dst)
{
if (opt->type->save) {
void *src = opt->new ? (char*)config->optstruct + opt->offset : opt->p;
opt->type->save(opt, dst, src);
}
}
static void m_option_set(const m_config_t *config, const m_option_t *opt,
void *src)
{
if (opt->type->set) {
void *dst = opt->new ? (char*)config->optstruct + opt->offset : opt->p;
opt->type->set(opt, dst, src);
}
}
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->opt->flags & M_OPT_OLD) && !(co->flags & M_CFG_OPT_SET))
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_msg(MSGT_CFGPARSER, MSGL_WARN,MSGTR_SaveSlotTooOld,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(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(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_msg(MSGT_CFGPARSER, MSGL_ERR,MSGTR_InvalidCfgfileOption,arg);
return M_OPT_INVALID;
}
if((config->mode == M_COMMAND_LINE) && (co->opt->flags & M_OPT_NOCMD)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,MSGTR_InvalidCmdlineOption,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_msg(MSGT_CFGPARSER, MSGL_ERR,MSGTR_InvalidSuboption,co->name,lst[2*i]);
r = M_OPT_INVALID;
} else
if(sr == M_OPT_MISSING_PARAM){
mp_msg(MSGT_CFGPARSER, MSGL_ERR,MSGTR_MissingSuboptionParameter,lst[2*i],co->name);
r = M_OPT_INVALID;
} else
r = sr;
}
}
free(lst[2*i]);
free(lst[2*i+1]);
}
if(lst) 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(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_msg(MSGT_CFGPARSER, MSGL_ERR,MSGTR_MissingOptionParameter,arg);
return M_OPT_INVALID;
}
return r;
}
const m_option_t*
m_config_get_option(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;
}
const void*
m_config_get_option_ptr(m_config_t *config, char* arg) {
const m_option_t* conf;
#ifdef MP_DEBUG
assert(config != NULL);
assert(arg != NULL);
#endif
conf = m_config_get_option(config,arg);
if(!conf) return NULL;
return conf->p;
}
void
m_config_print_option_list(m_config_t *config) {
char min[50],max[50];
m_config_option_t* co;
int count = 0;
if(!config->opts) return;
mp_msg(MSGT_CFGPARSER, MSGL_INFO, MSGTR_OptionListHeader);
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_msg(MSGT_CFGPARSER, MSGL_INFO, MSGTR_TotalOptions,count);
}
m_profile_t*
m_config_get_profile(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_msg(MSGT_CFGPARSER, MSGL_WARN, MSGTR_ProfileInclusionTooDeep);
return;
}
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--;
}
static int
parse_profile(const m_option_t *opt, const char *name, 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_msg(MSGT_CFGPARSER, MSGL_INFO, MSGTR_NoProfileDefined);
return M_OPT_EXIT-1;
}
mp_msg(MSGT_CFGPARSER, MSGL_INFO, MSGTR_AvailableProfiles);
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_msg(MSGT_CFGPARSER, MSGL_WARN, MSGTR_UnknownProfile,
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, 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_msg(MSGT_CFGPARSER, MSGL_ERR, MSGTR_UnknownProfile, param);
return M_OPT_EXIT-1;
}
if(!config->profile_depth)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, MSGTR_Profile, 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;
}