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m_option.c
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m_option.c
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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 Options
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdio.h>
#include <stdarg.h>
#include <inttypes.h>
#include <unistd.h>
#include "m_option.h"
//#include "m_config.h"
#include "mp_msg.h"
#include "stream/url.h"
#include "libavutil/avstring.h"
// Don't free for 'production' atm
#ifndef MP_DEBUG
//#define NO_FREE
#endif
const m_option_t* m_option_list_find(const m_option_t* list,const char* name) {
int i;
for(i = 0 ; list[i].name ; i++) {
int l = strlen(list[i].name) - 1;
if((list[i].type->flags & M_OPT_TYPE_ALLOW_WILDCARD) &&
(l > 0) && (list[i].name[l] == '*')) {
if(strncasecmp(list[i].name,name,l) == 0)
return &list[i];
} else if(strcasecmp(list[i].name,name) == 0)
return &list[i];
}
return NULL;
}
// Default function that just does a memcpy
static void copy_opt(const m_option_t* opt,void* dst,const void* src) {
if(dst && src)
memcpy(dst,src,opt->type->size);
}
// Helper for the print funcs (from man printf)
static char* dup_printf(const char *fmt, ...) {
/* Guess we need no more than 50 bytes. */
int n, size = 50;
char *p;
va_list ap;
if ((p = malloc (size)) == NULL)
return NULL;
while (1) {
/* Try to print in the allocated space. */
va_start(ap, fmt);
n = vsnprintf (p, size, fmt, ap);
va_end(ap);
/* If that worked, return the string. */
if (n > -1 && n < size)
return p;
/* Else try again with more space. */
if (n > -1) /* glibc 2.1 */
size = n+1; /* precisely what is needed */
else /* glibc 2.0 */
size *= 2; /* twice the old size */
if ((p = realloc (p, size)) == NULL)
return NULL;
}
}
// Flag
#define VAL(x) (*(int*)(x))
static int parse_flag(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
if (src == M_CONFIG_FILE) {
if(!param) return M_OPT_MISSING_PARAM;
if (!strcasecmp(param, "yes") || /* any other language? */
!strcasecmp(param, "on") ||
!strcasecmp(param, "ja") ||
!strcasecmp(param, "si") ||
!strcasecmp(param, "igen") ||
!strcasecmp(param, "y") ||
!strcasecmp(param, "j") ||
!strcasecmp(param, "i") ||
!strcasecmp(param, "tak") ||
!strcasecmp(param, "ja") ||
!strcasecmp(param, "true") ||
!strcmp(param, "1")) {
if(dst) VAL(dst) = opt->max;
} else if (!strcasecmp(param, "no") ||
!strcasecmp(param, "off") ||
!strcasecmp(param, "nein") ||
!strcasecmp(param, "nicht") ||
!strcasecmp(param, "nem") ||
!strcasecmp(param, "n") ||
!strcasecmp(param, "nie") ||
!strcasecmp(param, "nej") ||
!strcasecmp(param, "false") ||
!strcmp(param, "0")) {
if(dst) VAL(dst) = opt->min;
} else {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Invalid parameter for %s flag: %s\n",name, param);
return M_OPT_INVALID;
}
return 1;
} else {
if(dst) VAL(dst) = opt->max;
return 0;
}
}
static char* print_flag(const m_option_t* opt, const void* val) {
if(VAL(val) == opt->min)
return strdup("no");
else
return strdup("yes");
}
const m_option_type_t m_option_type_flag = {
"Flag",
"need yes or no in config files",
sizeof(int),
0,
parse_flag,
print_flag,
copy_opt,
copy_opt,
NULL,
NULL
};
// Integer
static int parse_int(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
long long tmp_int;
char *endptr;
src = 0;
if (param == NULL)
return M_OPT_MISSING_PARAM;
tmp_int = strtoll(param, &endptr, 10);
if (*endptr)
tmp_int = strtoll(param, &endptr, 0);
if (*endptr) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be an integer: %s\n",name, param);
return M_OPT_INVALID;
}
if ((opt->flags & M_OPT_MIN) && (tmp_int < opt->min)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be >= %d: %s\n", name, (int) opt->min, param);
return M_OPT_OUT_OF_RANGE;
}
if ((opt->flags & M_OPT_MAX) && (tmp_int > opt->max)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be <= %d: %s\n",name, (int) opt->max, param);
return M_OPT_OUT_OF_RANGE;
}
if(dst) {
if (opt->type->size == sizeof(int64_t))
*(int64_t *)dst = tmp_int;
else
VAL(dst) = tmp_int;
}
return 1;
}
static char* print_int(const m_option_t* opt, const void* val) {
if (opt->type->size == sizeof(int64_t))
return dup_printf("%"PRId64, *(const int64_t *)val);
return dup_printf("%d",VAL(val));
}
const m_option_type_t m_option_type_int = {
"Integer",
"",
sizeof(int),
0,
parse_int,
print_int,
copy_opt,
copy_opt,
NULL,
NULL
};
const m_option_type_t m_option_type_int64 = {
"Integer64",
"",
sizeof(int64_t),
0,
parse_int,
print_int,
copy_opt,
copy_opt,
NULL,
NULL
};
// Float
#undef VAL
#define VAL(x) (*(double*)(x))
static int parse_double(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
double tmp_float;
char* endptr;
src = 0;
if (param == NULL)
return M_OPT_MISSING_PARAM;
tmp_float = strtod(param, &endptr);
switch(*endptr) {
case ':':
case '/':
tmp_float /= strtod(endptr+1, &endptr);
break;
case '.':
case ',':
/* we also handle floats specified with
* non-locale decimal point ::atmos
*/
if(tmp_float<0)
tmp_float -= 1.0/pow(10,strlen(endptr+1)) * strtod(endptr+1, &endptr);
else
tmp_float += 1.0/pow(10,strlen(endptr+1)) * strtod(endptr+1, &endptr);
break;
}
if (*endptr) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be a floating point "
"number or a ratio (numerator[:/]denominator): %s\n",name, param);
return M_OPT_INVALID;
}
if (opt->flags & M_OPT_MIN)
if (tmp_float < opt->min) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be >= %f: %s\n", name, opt->min, param);
return M_OPT_OUT_OF_RANGE;
}
if (opt->flags & M_OPT_MAX)
if (tmp_float > opt->max) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be <= %f: %s\n", name, opt->max, param);
return M_OPT_OUT_OF_RANGE;
}
if(dst) VAL(dst) = tmp_float;
return 1;
}
static char* print_double(const m_option_t* opt, const void* val) {
opt = NULL;
return dup_printf("%f",VAL(val));
}
const m_option_type_t m_option_type_double = {
"Double",
"double precision floating point number or ratio (numerator[:/]denominator)",
sizeof(double),
0,
parse_double,
print_double,
copy_opt,
copy_opt,
NULL,
NULL
};
#undef VAL
#define VAL(x) (*(float*)(x))
static int parse_float(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
double tmp;
int r= parse_double(opt, name, param, &tmp, src);
if(r==1 && dst) VAL(dst) = tmp;
return r;
}
static char* print_float(const m_option_t* opt, const void* val) {
opt = NULL;
return dup_printf("%f",VAL(val));
}
const m_option_type_t m_option_type_float = {
"Float",
"floating point number or ratio (numerator[:/]denominator)",
sizeof(float),
0,
parse_float,
print_float,
copy_opt,
copy_opt,
NULL,
NULL
};
///////////// Position
#undef VAL
#define VAL(x) (*(off_t*)(x))
static int parse_position(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
off_t tmp_off;
char dummy;
if (param == NULL)
return M_OPT_MISSING_PARAM;
if (sscanf(param, sizeof(off_t) == sizeof(int) ?
"%d%c" : "%"PRId64"%c", &tmp_off, &dummy) != 1) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "The %s option must be an integer: %s\n",opt->name,param);
return M_OPT_INVALID;
}
if (opt->flags & M_OPT_MIN)
if (tmp_off < opt->min) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %s option must be >= %"PRId64": %s\n",
name, (int64_t) opt->min, param);
return M_OPT_OUT_OF_RANGE;
}
if (opt->flags & M_OPT_MAX)
if (tmp_off > opt->max) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %s option must be <= %"PRId64": %s\n",
name, (int64_t) opt->max, param);
return M_OPT_OUT_OF_RANGE;
}
if(dst)
VAL(dst) = tmp_off;
return 1;
}
static char* print_position(const m_option_t* opt, const void* val) {
return dup_printf("%"PRId64,(int64_t)VAL(val));
}
const m_option_type_t m_option_type_position = {
"Position",
"Integer (off_t)",
sizeof(off_t),
0,
parse_position,
print_position,
copy_opt,
copy_opt,
NULL,
NULL
};
///////////// String
#undef VAL
#define VAL(x) (*(char**)(x))
static int parse_str(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
if (param == NULL)
return M_OPT_MISSING_PARAM;
if ((opt->flags & M_OPT_MIN) && (strlen(param) < opt->min)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Parameter must be >= %d chars: %s\n",
(int) opt->min, param);
return M_OPT_OUT_OF_RANGE;
}
if ((opt->flags & M_OPT_MAX) && (strlen(param) > opt->max)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Parameter must be <= %d chars: %s\n",
(int) opt->max, param);
return M_OPT_OUT_OF_RANGE;
}
if(dst) {
free(VAL(dst));
VAL(dst) = strdup(param);
}
return 1;
}
static char* print_str(const m_option_t* opt, const void* val) {
return (val && VAL(val) && strlen(VAL(val)) > 0) ? strdup(VAL(val)) : NULL;
}
static void copy_str(const m_option_t* opt,void* dst, const void* src) {
if(dst && src) {
#ifndef NO_FREE
free(VAL(dst)); //FIXME!!!
#endif
VAL(dst) = VAL(src) ? strdup(VAL(src)) : NULL;
}
}
static void free_str(void* src) {
if(src && VAL(src)){
#ifndef NO_FREE
free(VAL(src)); //FIXME!!!
#endif
VAL(src) = NULL;
}
}
const m_option_type_t m_option_type_string = {
"String",
"",
sizeof(char*),
M_OPT_TYPE_DYNAMIC,
parse_str,
print_str,
copy_str,
copy_str,
copy_str,
free_str
};
//////////// String list
#define LIST_SEPARATOR ','
#undef VAL
#define VAL(x) (*(char***)(x))
#define OP_NONE 0
#define OP_ADD 1
#define OP_PRE 2
#define OP_DEL 3
#define OP_CLR 4
static void free_str_list(void* dst) {
char** d;
int i;
if(!dst || !VAL(dst)) return;
d = VAL(dst);
// FIXME!!!
#ifndef NO_FREE
for(i = 0 ; d[i] != NULL ; i++)
free(d[i]);
free(d);
#endif
VAL(dst) = NULL;
}
static int str_list_add(char** add, int n,void* dst,int pre) {
char** lst = VAL(dst);
int ln;
if(!dst) return M_OPT_PARSER_ERR;
lst = VAL(dst);
for(ln = 0 ; lst && lst[ln] ; ln++)
/**/;
lst = realloc(lst,(n+ln+1)*sizeof(char*));
if(pre) {
memmove(&lst[n],lst,ln*sizeof(char*));
memcpy(lst,add,n*sizeof(char*));
} else
memcpy(&lst[ln],add,n*sizeof(char*));
// (re-)add NULL-termination
lst[ln+n] = NULL;
free(add);
VAL(dst) = lst;
return 1;
}
static int str_list_del(char** del, int n,void* dst) {
char **lst,*ep,**d;
int i,ln,s;
long idx;
if(!dst) return M_OPT_PARSER_ERR;
lst = VAL(dst);
for(ln = 0 ; lst && lst[ln] ; ln++)
/**/;
s = ln;
for(i = 0 ; del[i] != NULL ; i++) {
idx = strtol(del[i], &ep, 0);
if(*ep) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Invalid index: %s\n",del[i]);
free(del[i]);
continue;
}
free(del[i]);
if(idx < 0 || idx >= ln) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Index %ld is out of range.\n",idx);
continue;
} else if(!lst[idx])
continue;
free(lst[idx]);
lst[idx] = NULL;
s--;
}
free(del);
if(s == 0) {
free(lst);
VAL(dst) = NULL;
return 1;
}
d = calloc(s+1,sizeof(char*));
for(i = 0, n = 0 ; i < ln ; i++) {
if(!lst[i]) continue;
d[n] = lst[i];
n++;
}
d[s] = NULL;
free(lst);
VAL(dst) = d;
return 1;
}
static char *get_nextsep(char *ptr, char sep, int modify) {
char *last_ptr = ptr;
for(;;){
ptr = strchr(ptr, sep);
if(ptr && ptr>last_ptr && ptr[-1]=='\\'){
if (modify) memmove(ptr-1, ptr, strlen(ptr)+1);
else ptr++;
}else
break;
}
return ptr;
}
static int parse_str_list(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
int n = 0,len = strlen(opt->name);
char *str;
char *ptr = (char *)param, *last_ptr, **res;
int op = OP_NONE;
if(opt->name[len-1] == '*' && ((int)strlen(name) > len - 1)) {
const char* n = &name[len-1];
if(strcasecmp(n,"-add") == 0)
op = OP_ADD;
else if(strcasecmp(n,"-pre") == 0)
op = OP_PRE;
else if(strcasecmp(n,"-del") == 0)
op = OP_DEL;
else if(strcasecmp(n,"-clr") == 0)
op = OP_CLR;
else
return M_OPT_UNKNOWN;
}
// Clear the list ??
if(op == OP_CLR) {
if(dst)
free_str_list(dst);
return 0;
}
// All other ops need a param
if (param == NULL || strlen(param) == 0)
return M_OPT_MISSING_PARAM;
while(ptr[0] != '\0') {
ptr = get_nextsep(ptr, LIST_SEPARATOR, 0);
if(!ptr) {
n++;
break;
}
ptr++;
n++;
}
if(n == 0)
return M_OPT_INVALID;
if( ((opt->flags & M_OPT_MIN) && (n < opt->min)) ||
((opt->flags & M_OPT_MAX) && (n > opt->max)) )
return M_OPT_OUT_OF_RANGE;
if(!dst) return 1;
res = malloc((n+2)*sizeof(char*));
ptr = str = strdup(param);
n = 0;
while(1) {
last_ptr = ptr;
ptr = get_nextsep(ptr, LIST_SEPARATOR, 1);
if(!ptr) {
res[n] = strdup(last_ptr);
n++;
break;
}
len = ptr - last_ptr;
res[n] = malloc(len + 1);
if(len) strncpy(res[n],last_ptr,len);
res[n][len] = '\0';
ptr++;
n++;
}
res[n] = NULL;
free(str);
switch(op) {
case OP_ADD:
return str_list_add(res,n,dst,0);
case OP_PRE:
return str_list_add(res,n,dst,1);
case OP_DEL:
return str_list_del(res,n,dst);
}
if(VAL(dst))
free_str_list(dst);
VAL(dst) = res;
return 1;
}
static void copy_str_list(const m_option_t* opt,void* dst, const void* src) {
int n;
char **d,**s;
if(!(dst && src)) return;
s = VAL(src);
if(VAL(dst))
free_str_list(dst);
if(!s) {
VAL(dst) = NULL;
return;
}
for(n = 0 ; s[n] != NULL ; n++)
/* NOTHING */;
d = malloc((n+1)*sizeof(char*));
for( ; n >= 0 ; n--)
d[n] = s[n] ? strdup(s[n]) : NULL;
VAL(dst) = d;
}
static char* print_str_list(const m_option_t* opt, const void* src) {
char **lst = NULL;
char *ret = NULL,*last = NULL;
int i;
if(!(src && VAL(src))) return NULL;
lst = VAL(src);
for(i = 0 ; lst[i] ; i++) {
if(last) {
ret = dup_printf("%s,%s",last,lst[i]);
free(last);
} else
ret = strdup(lst[i]);
last = ret;
}
if(last && last != ret) free(last);
return ret;
}
const m_option_type_t m_option_type_string_list = {
"String list",
"A list of strings separated by ','\n"
"Option with a name ending in an * permits using the following suffix: \n"
"\t-add: Add the given parameters at the end of the list.\n"
"\t-pre: Add the given parameters at the beginning of the list.\n"
"\t-del: Remove the entry at the given indices.\n"
"\t-clr: Clear the list.\n"
"e.g: -vf-add flip,mirror -vf-del 2,5\n",
sizeof(char**),
M_OPT_TYPE_DYNAMIC | M_OPT_TYPE_ALLOW_WILDCARD,
parse_str_list,
print_str_list,
copy_str_list,
copy_str_list,
copy_str_list,
free_str_list
};
/////////////////// Func based options
static int parse_call_func(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
int res = ((m_opt_func_param_t) opt->p)(opt,param);
if (res < 0)
return res;
return 1;
}
// special variant, will not have a history/be able to
// be used as per-file option etc.
const m_option_type_t m_option_type_func_param_immediate = {
"Func param once",
"",
0,
M_OPT_TYPE_INDIRECT,
parse_call_func,
NULL,
NULL, // Nothing to do on save
NULL,
NULL,
NULL
};
// A chained list to save the various calls for func_param and func_full
typedef struct m_func_save m_func_save_t;
struct m_func_save {
m_func_save_t* next;
char* name;
char* param;
};
#undef VAL
#define VAL(x) (*(m_func_save_t**)(x))
static void free_func_pf(void* src) {
m_func_save_t *s,*n;
if(!src) return;
s = VAL(src);
while(s) {
n = s->next;
free(s->name);
free(s->param);
free(s);
s = n;
}
VAL(src) = NULL;
}
// Parser for func_param and func_full
static int parse_func_pf(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
m_func_save_t *s,*p;
if(!dst)
return 1;
s = calloc(1,sizeof(m_func_save_t));
s->name = strdup(name);
s->param = param ? strdup(param) : NULL;
p = VAL(dst);
if(p) {
for( ; p->next != NULL ; p = p->next)
/**/;
p->next = s;
} else
VAL(dst) = s;
return 1;
}
static void copy_func_pf(const m_option_t* opt,void* dst, const void* src) {
m_func_save_t *d = NULL, *s,* last = NULL;
if(!(dst && src)) return;
s = VAL(src);
if(VAL(dst))
free_func_pf(dst);
while(s) {
d = calloc(1,sizeof(m_func_save_t));
d->name = strdup(s->name);
d->param = s->param ? strdup(s->param) : NULL;
if(last)
last->next = d;
else
VAL(dst) = d;
last = d;
s = s->next;
}
}
/////////////////// Func_param
static void set_func_param(const m_option_t* opt, void* dst, const void* src) {
m_func_save_t* s;
if(!src) return;
s = VAL(src);
if(!s) return;
// Revert if needed
if(opt->priv) ((m_opt_default_func_t)opt->priv)(opt,opt->name);
for( ; s != NULL ; s = s->next)
((m_opt_func_param_t) opt->p)(opt,s->param);
}
const m_option_type_t m_option_type_func_param = {
"Func param",
"",
sizeof(m_func_save_t*),
M_OPT_TYPE_INDIRECT,
parse_func_pf,
NULL,
NULL, // Nothing to do on save
set_func_param,
copy_func_pf,
free_func_pf
};
/////////////////// Func_full
static void set_func_full(const m_option_t* opt, void* dst, const void* src) {
m_func_save_t* s;
if(!src) return;
for(s = VAL(src) ; s ; s = s->next) {
// Revert if needed
if(opt->priv) ((m_opt_default_func_t)opt->priv)(opt,s->name);
((m_opt_func_full_t) opt->p)(opt,s->name,s->param);
}
}
const m_option_type_t m_option_type_func_full = {
"Func full",
"",
sizeof(m_func_save_t*),
M_OPT_TYPE_ALLOW_WILDCARD|M_OPT_TYPE_INDIRECT,
parse_func_pf,
NULL,
NULL, // Nothing to do on save
set_func_full,
copy_func_pf,
free_func_pf
};
/////////////// Func
#undef VAL
#define VAL(x) (*(int*)(x))
static int parse_func(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
if(dst)
VAL(dst) += 1;
return 0;
}
static void set_func(const m_option_t* opt,void* dst, const void* src) {
int i;
if(opt->priv) ((m_opt_default_func_t)opt->priv)(opt,opt->name);
for(i = 0 ; i < VAL(src) ; i++)
((m_opt_func_t) opt->p)(opt);
}
const m_option_type_t m_option_type_func = {
"Func",
"",
sizeof(int),
M_OPT_TYPE_INDIRECT,
parse_func,
NULL,
NULL, // Nothing to do on save
set_func,
NULL,
NULL
};
/////////////////// Print
static int parse_print(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
if(opt->type == CONF_TYPE_PRINT_INDIRECT)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "%s", *(char **) opt->p);
else if(opt->type == CONF_TYPE_PRINT_FUNC)
return ((m_opt_func_full_t) opt->p)(opt,name,param);
else
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "%s", (char *) opt->p);
if(opt->priv == NULL)
return M_OPT_EXIT;
if(opt->priv == PRIV_NO_EXIT)
return 0;
return 1;
}
const m_option_type_t m_option_type_print = {
"Print",
"",
0,
0,
parse_print,
NULL,
NULL,
NULL,
NULL,
NULL
};
const m_option_type_t m_option_type_print_indirect = {
"Print",
"",
0,
0,
parse_print,
NULL,
NULL,
NULL,
NULL,
NULL
};
const m_option_type_t m_option_type_print_func = {
"Print",
"",
0,
M_OPT_TYPE_ALLOW_WILDCARD,
parse_print,
NULL,
NULL,
NULL,
NULL,
NULL
};
/////////////////////// Subconfig
#undef VAL
#define VAL(x) (*(char***)(x))
static int parse_subconf(const m_option_t* opt,const char *name, const char *param, void* dst, int src) {
char *subparam;
char *subopt;
int nr = 0,i,r;
const m_option_t *subopts;
const char *p;
char** lst = NULL;
if (param == NULL || strlen(param) == 0)
return M_OPT_MISSING_PARAM;
subparam = malloc(strlen(param)+1);
subopt = malloc(strlen(param)+1);
p = param;
subopts = opt->p;
while(p[0])
{
int sscanf_ret = 1;
int optlen = strcspn(p, ":=");
/* clear out */
subopt[0] = subparam[0] = 0;
av_strlcpy(subopt, p, optlen + 1);
p = &p[optlen];
if (p[0] == '=') {
sscanf_ret = 2;
p = &p[1];
if (p[0] == '"') {
p = &p[1];
optlen = strcspn(p, "\"");
av_strlcpy(subparam, p, optlen + 1);
p = &p[optlen];
if (p[0] != '"') {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Terminating '\"' missing for '%s'\n", subopt);
return M_OPT_INVALID;
}
p = &p[1];
} else if (p[0] == '%') {