m_option.c

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#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 "libmpdemux/url.h"

// Don't free for 'production' atm
#ifndef MP_DEBUG
#define NO_FREE
#endif

m_option_t* m_option_list_find(m_option_t* list,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(m_option_t* opt,void* dst,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(m_option_t* opt,char *name, 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(m_option_t* opt,  void* val) {
  if(VAL(val) == opt->min)
    return strdup("no");
  else
    return strdup("yes");
}

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(m_option_t* opt,char *name, char *param, void* dst, int src) {
  long tmp_int;
  char *endptr;
  src = 0;

  if (param == NULL)
    return M_OPT_MISSING_PARAM;

  tmp_int = strtol(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) VAL(dst) = tmp_int;

  return 1;
}

static char* print_int(m_option_t* opt,  void* val) {
  opt = NULL;
  return dup_printf("%d",VAL(val));
}

m_option_type_t m_option_type_int = {
  "Integer",
  "",
  sizeof(int),
  0,
  parse_int,
  print_int,
  copy_opt,
  copy_opt,
  NULL,
  NULL
};

// Float

#undef VAL
#define VAL(x) (*(double*)(x))

static int parse_double(m_option_t* opt,char *name, 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(m_option_t* opt,  void* val) {
  opt = NULL;
  return dup_printf("%f",VAL(val));
}

m_option_type_t m_option_type_double = {
  "Double",
  "double precission 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(m_option_t* opt,char *name, 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(m_option_t* opt,  void* val) {
  opt = NULL;
  return dup_printf("%f",VAL(val));
}

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(m_option_t* opt,char *name, 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" : "%lld%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,
	     (sizeof(off_t) == sizeof(int) ?
	      "The %s option must be >= %d: %s\n" :
	      "The %s option must be >= %lld: %s\n"),
	     name, (off_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,
	     (sizeof(off_t) == sizeof(int) ?
	      "The %s option must be <= %d: %s\n" :
	      "The %s option must be <= %lld: %s\n"),
	     name, (off_t) opt->max, param);
      return M_OPT_OUT_OF_RANGE;
    }

  if(dst)
    VAL(dst) = tmp_off;
  return 1;
}

static char* print_position(m_option_t* opt,  void* val) {
  return dup_printf(sizeof(off_t) == sizeof(int) ?  "%d" : "%lld",VAL(val));
}

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(m_option_t* opt,char *name, 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) {
    if(VAL(dst))
      free(VAL(dst));
    VAL(dst) = strdup(param);
  }

  return 1;

}

static char* print_str(m_option_t* opt,  void* val) {
  return (val && VAL(val) && strlen(VAL(val)) > 0) ? strdup(VAL(val)) : NULL;
}

static void copy_str(m_option_t* opt,void* dst, void* src) {
  if(dst && src) {
#ifndef NO_FREE
    if(VAL(dst)) 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;
  }
}

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+1)*sizeof(char*));
    memcpy(lst,add,n*sizeof(char*));
  } else 
    memcpy(&lst[ln],add,(n+1)*sizeof(char*));

  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) {
    if(lst) 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;

  if(lst) free(lst);
  VAL(dst) = d;

  return 1;
}
  

static int parse_str_list(m_option_t* opt,char *name, char *param, void* dst, int src) {
  int n = 0,len = strlen(opt->name);
  char *ptr = param, *last_ptr, **res;
  int op = OP_NONE;

  if(opt->name[len-1] == '*' && ((int)strlen(name) > len - 1)) {
    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') {
    last_ptr = ptr;
    ptr = strchr(ptr,LIST_SEPARATOR);
    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 = param;
  n = 0;

  while(1) {
    last_ptr = ptr;
    ptr = strchr(ptr,LIST_SEPARATOR);
    if(!ptr) {
      res[n] = strdup(last_ptr);
      n++;
      break;
    }
    len = ptr - last_ptr;
    res[n] = (char*)malloc(len + 1);
    if(len) strncpy(res[n],last_ptr,len);
    res[n][len] = '\0';
    ptr++;
    n++;
  }
  res[n] = NULL;

  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(m_option_t* opt,void* dst, 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 = (char**)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(m_option_t* opt, 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;
}

m_option_type_t m_option_type_string_list = {