mpv/cfgparser.c

/*
 * command line and config file parser
 * by Szabolcs Berecz <szabi@inf.elte.hu>
 * (C) 2001
 *
 * subconfig support by alex
 */

//#define DEBUG

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include "config.h"

#include "mp_msg.h"

#define COMMAND_LINE		0
#define CONFIG_FILE		1

#define MAX_RECURSION_DEPTH	8

#ifdef MP_DEBUG
#include <assert.h>
#endif

#include "cfgparser.h"



static void
m_config_save_option(m_config_t* config, config_t* conf,char* opt, char *param) {
  config_save_t* save;
  int sl=0;
 
#ifdef MP_DEBUG
  assert(config != NULL);
  assert(config->cs_level >= 0);
  assert(conf != NULL);
  assert(opt != NULL);
  assert( ! (conf->flags & CONF_NOSAVE));
#endif

  switch(conf->type) {
  case CONF_TYPE_PRINT :
  case CONF_TYPE_SUBCONFIG :
    return;
  default :
  }

  mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Saving option %s\n",opt);

  save = config->config_stack[config->cs_level];

  if(save) {
    for(sl = 0; save[sl].opt != NULL; sl++){
      // Check to not allocate the same arg two times
      if(save[sl].opt == conf && (save[sl].opt_name == NULL || strcasecmp(save[sl].opt_name,opt) == 0))
	break;
    }
    
  }
  if(save == NULL || save[sl].opt == NULL) {
    save = (config_save_t*)realloc(save,(sl+2)*sizeof(config_save_t));
    if(save == NULL) {
      mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",(sl+2)*sizeof(config_save_t),strerror(errno));
      return;
    }
    memset(&save[sl],0,2*sizeof(config_save_t));
    save[sl].opt = conf;
  }

  
  switch(conf->type) {
  case CONF_TYPE_FLAG :
  case CONF_TYPE_INT :
    save[sl].param.as_int = *((int*)conf->p);
    break;
  case CONF_TYPE_FLOAT :
    save[sl].param.as_float = *((float*)conf->p);
    break;
  case CONF_TYPE_STRING :
    save[sl].param.as_pointer = *((char**)conf->p);
    break;   
  case CONF_TYPE_FUNC_FULL :
    if(strcasecmp(conf->name,opt) != 0) save->opt_name = strdup(opt);
  case CONF_TYPE_FUNC_PARAM :
    save->param.as_pointer = strdup(param);
  case CONF_TYPE_FUNC :    
    break;
  default :
    printf("Should never append in m_config_save_option : conf->type=%d\n",conf->type);
  }

  config->config_stack[config->cs_level] = save;
}

static int
m_config_revert_option(m_config_t* config, config_save_t* save) {
  char* arg = NULL;
  config_save_t* iter=NULL;
  int i=-1;

#ifdef MP_DEBUG
  assert(config != NULL);
  assert(config->cs_level >= 0);
  assert(save != NULL);
#endif


  arg = save->opt_name ? save->opt_name : save->opt->name;
  mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Reverting option %s\n",arg);

  if(save->opt->default_func)
    save->opt->default_func(save->opt,arg);

  switch(save->opt->type) {
  case CONF_TYPE_FLAG :
  case CONF_TYPE_INT :
    *((int*)save->opt->p) = save->param.as_int;
    break;
  case CONF_TYPE_FLOAT :
    *((float*)save->opt->p) = save->param.as_float;
    break;
  case CONF_TYPE_STRING :
    *((char**)save->opt->p) = save->param.as_pointer;
    break;
  case CONF_TYPE_FUNC_PARAM :
  case CONF_TYPE_FUNC_FULL :
  case CONF_TYPE_FUNC :
    if(config->cs_level > 0) {
      for(i = config->cs_level - 1 ; i >= 0 ; i--){
	if(config->config_stack[i] == NULL) continue;
	for(iter = config->config_stack[i]; iter != NULL && iter->opt != NULL ; iter++) {
	  if(iter->opt == save->opt && 
	     strcasecmp(save->param.as_pointer,iter->param.as_pointer) == 0 && 
	     (save->opt_name == NULL || 
	      (iter->opt_name && strcasecmp(save->opt_name,iter->opt_name)))) break;
	}
      }
    }
    free(save->param.as_pointer);
    if(save->opt_name) free(save->opt_name);
    save->opt_name = save->param.as_pointer = NULL;
    if(i < 0) break;
    arg = iter->opt_name ? iter->opt_name : iter->opt->name;
    switch(iter->opt->type) {
    case CONF_TYPE_FUNC :
      if ((((cfg_func_t) iter->opt->p)(iter->opt)) < 0)
	return -1;
      break;
    case CONF_TYPE_FUNC_PARAM :
      if (iter->param.as_pointer == NULL) {
	printf("We lost param for option %s?\n",iter->opt->name);
	return -1;
      } 
      if ((((cfg_func_param_t) iter->opt->p)(iter->opt, (char*)iter->param.as_pointer)) < 0)
	return -1;
      break;
    case CONF_TYPE_FUNC_FULL :
      if (iter->param.as_pointer != NULL && ((char*)iter->param.as_pointer)[0]=='-'){
	if( ((cfg_func_arg_param_t) iter->opt->p)(iter->opt, arg, NULL) < 0)
	  return -1;
      }else {
	if (((cfg_func_arg_param_t) save->opt->p)(iter->opt, arg, (char*)iter->param.as_pointer) < 0) 
	  return -1;
	  
      }
      break;
    }
    break;
  default :
    printf("Why do we reverse this : name=%s type=%d ?\n",save->opt->name,save->opt->type);
  }
			
  return 1;
}

void
m_config_push(m_config_t* config) {

#ifdef MP_DEBUG
  assert(config != NULL);
  assert(config->cs_level >= 0);
#endif

  config->cs_level++;
  config->config_stack = (config_save_t**)realloc(config->config_stack ,sizeof(config_save_t*)*(config->cs_level+1));
  if(config->config_stack == NULL) {
    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",sizeof(config_save_t*)*(config->cs_level+1),strerror(errno));
    config->cs_level = -1;
    return;
  }
  config->config_stack[config->cs_level] = NULL;
  mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Config pushed level=%d\n",config->cs_level);
}

int
m_config_pop(m_config_t* config) {
  int i,ret= 1;
  config_save_t* cs;
  
#ifdef MP_DEBUG
  assert(config != NULL);
  assert(config->cs_level > 0);
#endif

  if(config->config_stack[config->cs_level] != NULL) {
    cs = config->config_stack[config->cs_level];
    for(i=0; cs[i].opt != NULL ; i++ ) {
      if (m_config_revert_option(config,&cs[i]) < 0)
	ret = -1;
    }
    free(config->config_stack[config->cs_level]);
  }
  config->config_stack = (config_save_t**)realloc(config->config_stack ,sizeof(config_save_t*)*config->cs_level);
  config->cs_level--;
  if(config->cs_level > 0 && config->config_stack == NULL) {
    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",sizeof(config_save_t*)*config->cs_level,strerror(errno));
    config->cs_level = -1;
    return -1;
  }
  mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Config poped level=%d\n",config->cs_level);
  return ret;
}

m_config_t*
m_config_new(play_tree_t* pt) {
  m_config_t* config;

#ifdef MP_DEBUG
  assert(pt != NULL);
#endif

  config = (m_config_t*)calloc(1,sizeof(m_config_t));
  if(config == NULL) {
    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",sizeof(m_config_t),strerror(errno));
    return NULL;
  }
  config->config_stack = (config_save_t**)calloc(1,sizeof(config_save_t*));
  if(config->config_stack == NULL) {
    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",sizeof(config_save_t*),strerror(errno));
    free(config);
    return NULL;
  }
  config->global = 1; // We always start with global options
  config->pt = pt;
  return config;
}

void
m_config_free(m_config_t* config) {

#ifdef MP_DEBUG
  assert(config != NULL);
#endif

  free(config->opt_list);
  free(config->config_stack);
  free(config);
}


static int init_conf(m_config_t *config, int mode)
{
#ifdef MP_DEBUG
	assert(config != NULL);
	assert(config->pt != NULL);
	assert(config->last_entry == NULL || config->last_entry->parent == config->pt);

	if (mode != COMMAND_LINE && mode != CONFIG_FILE) {
		mp_msg(MSGT_CFGPARSER, MSGL_ERR, "init_conf: wrong mode!\n");
		return -1;
	}
#endif
	config->parser_mode = mode;
	config->global = 1;
	return 1;
}


static int config_read_option(m_config_t *config,config_t** conf_list, char *opt, char *param)
{
	int i=0,nconf = 0;
	long tmp_int;
	double tmp_float;
	int ret = -1;
	char *endptr;
	config_t* conf=NULL;

#ifdef MP_DEBUG
	assert(config != NULL);
	assert(conf_list != NULL);
	assert(opt != NULL);
#endif

	mp_msg(MSGT_CFGPARSER, MSGL_DBG3, "read_option: conf=%p opt='%s' param='%s'\n",
	    conf, opt, param);
	for(nconf = 0 ;  conf_list[nconf] != NULL; nconf++) {
	  conf = conf_list[nconf];
		for (i = 0; conf[i].name != NULL; i++) {
			int namelength;
			/* allow 'aa*' in config.name */
			namelength=strlen(conf[i].name);
			if ( (conf[i].name[namelength-1]=='*') && 
				    !memcmp(opt, conf[i].name, namelength-1))
			        break;
			if (!strcasecmp(opt, conf[i].name))
			break;
		}
	}
	if (conf[i].name == NULL) {
		if (config->parser_mode == CONFIG_FILE)
			mp_msg(MSGT_CFGPARSER, MSGL_ERR, "invalid option:\n");
		ret = ERR_NOT_AN_OPTION;
		goto out;
	}
	mp_msg(MSGT_CFGPARSER, MSGL_DBG3, "read_option: name='%s' p=%p type=%d\n",
	    conf[i].name, conf[i].p, conf[i].type);

	if (conf[i].flags & CONF_NOCFG && config->parser_mode == CONFIG_FILE) {
		mp_msg(MSGT_CFGPARSER, MSGL_ERR, "this option can only be used on command line:\n", opt);
		ret = ERR_NOT_AN_OPTION;
		goto out;
	}
	if (conf[i].flags & CONF_NOCMD && config->parser_mode == COMMAND_LINE) {
		mp_msg(MSGT_CFGPARSER, MSGL_ERR, "this option can only be used in config file:\n", opt);
		ret = ERR_NOT_AN_OPTION;
		goto out;
	}
	if(strcasecmp(opt,"playlist") == 0) { // We handle playlist here
	  play_tree_t* list;
#ifdef MP_DEBUG
	  assert(config->pt != NULL);
#endif
	  if(!param) {
	    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "playlist option need a filename\n");
	    ret = ERR_MISSING_PARAM;
	    goto out;
	  }
	  list = parse_playlist_file(param);
	  if(list) {
	    if(config->last_entry) {
	      play_tree_append_entry(config->last_entry,list);
	    }
	    else
	      play_tree_set_child(config->pt,list);
	    config->last_entry = list;
	  }
	  if(config->parser_mode == COMMAND_LINE)
	    config->global = 0;
	  return 1;	
	}
	if(config->global == 0 && ! (conf[i].flags & CONF_GLOBAL) )
	  m_config_push(config);
	if( !(conf[i].flags & CONF_NOSAVE) && ! (conf[i].flags & CONF_GLOBAL) )
	  m_config_save_option(config,&conf[i],opt,param);
	switch (conf[i].type) {
		case CONF_TYPE_FLAG:
			/* flags need a parameter in config file */
			if (config->parser_mode == CONFIG_FILE) {
				if (!strcasecmp(param, "yes") ||	/* any other language? */
				    !strcasecmp(param, "ja") ||
				    !strcasecmp(param, "si") ||
				    !strcasecmp(param, "igen") ||
				    !strcasecmp(param, "y") ||
				    !strcasecmp(param, "j") ||
				    !strcasecmp(param, "i") ||
				    !strcmp(param, "1"))
					*((int *) conf[i].p) = conf[i].max;
				else if (!strcasecmp(param, "no") ||
				    !strcasecmp(param, "nein") ||
				    !strcasecmp(param, "nicht") ||
				    !strcasecmp(param, "nem") ||
				    !strcasecmp(param, "n") ||
				    !strcmp(param, "0"))
					*((int *) conf[i].p) = conf[i].min;
				else {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "invalid parameter for flag: %s\n", param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}
				ret = 1;
			} else {	/* parser_mode == COMMAND_LINE */
				*((int *) conf[i].p) = conf[i].max;
				ret = 0;
			}
			break;
		case CONF_TYPE_INT:
			if (param == NULL)
				goto err_missing_param;

			tmp_int = strtol(param, &endptr, 0);
			if (*endptr) {
				mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be an integer: %s\n", param);
				ret = ERR_OUT_OF_RANGE;
				goto out;
			}

			if (conf[i].flags & CONF_MIN)
				if (tmp_int < conf[i].min) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be >= %d: %s\n", (int) conf[i].min, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}

			if (conf[i].flags & CONF_MAX)
				if (tmp_int > conf[i].max) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be <= %d: %s\n", (int) conf[i].max, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}

			*((int *) conf[i].p) = tmp_int;
			ret = 1;
			break;
		case CONF_TYPE_FLOAT:
			if (param == NULL)
				goto err_missing_param;

			tmp_float = strtod(param, &endptr);

			if ((*endptr == ':') || (*endptr == '/'))
				tmp_float /= strtod(endptr+1, &endptr);

			if (*endptr) {
				mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be a floating point number"
				       " or a ratio (numerator[:/]denominator): %s\n", param);
				ret = ERR_MISSING_PARAM;
				goto out;
			}

			if (conf[i].flags & CONF_MIN)
				if (tmp_float < conf[i].min) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be >= %f: %s\n", conf[i].min, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}

			if (conf[i].flags & CONF_MAX)
				if (tmp_float > conf[i].max) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be <= %f: %s\n", conf[i].max, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}

			*((float *) conf[i].p) = tmp_float;
			ret = 1;
			break;
		case CONF_TYPE_STRING:
			if (param == NULL)
				goto err_missing_param;

			if (conf[i].flags & CONF_MIN)
				if (strlen(param) < conf[i].min) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be >= %d chars: %s\n",
							(int) conf[i].min, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}

			if (conf[i].flags & CONF_MAX)
				if (strlen(param) > conf[i].max) {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parameter must be <= %d chars: %s\n",
							(int) conf[i].max, param);
					ret = ERR_OUT_OF_RANGE;
					goto out;
				}
			*((char **) conf[i].p) = strdup(param);
			ret = 1;
			break;
		case CONF_TYPE_FUNC_PARAM:
			if (param == NULL)
				goto err_missing_param;
			if ((((cfg_func_param_t) conf[i].p)(conf + i, param)) < 0) {
				ret = ERR_FUNC_ERR;
				goto out;
			}
			ret = 1;
			break;
		case CONF_TYPE_FUNC_FULL:
			if (param!=NULL && param[0]=='-'){
			    ret=((cfg_func_arg_param_t) conf[i].p)(conf + i, opt, NULL);
			    if (ret>=0) ret=0;
			    /* if we return >=0: param is processed again (if there is any) */
			}else{
			    ret=((cfg_func_arg_param_t) conf[i].p)(conf + i, opt, param);
			    /* if we return 0: need no param, precess it again */
			    /* if we return 1: accepted param */
			}
			break;
		case CONF_TYPE_FUNC:
			if ((((cfg_func_t) conf[i].p)(conf + i)) < 0) {
				ret = ERR_FUNC_ERR;
				goto out;
			}
			ret = 0;
			break;
		case CONF_TYPE_SUBCONFIG:
		    {
			char *subparam;
			char *subopt;
			int subconf_optnr;
			config_t *subconf;
			config_t *sublist[] = { NULL , NULL };
			char *token;

			if (param == NULL)
				goto err_missing_param;

			subparam = malloc(strlen(param)+1);
			subopt = malloc(strlen(param)+1);

			subconf = conf[i].p;
			sublist[0] = subconf;
			for (subconf_optnr = 0; subconf[subconf_optnr].name != NULL; subconf_optnr++)
			    /* NOTHING */;

			token = strtok(param, (char *)&(":"));
			while(token)
			{
			    int sscanf_ret;
			    /* clear out */
			    subopt[0] = subparam[0] = 0;
			    
			    sscanf_ret = sscanf(token, "%[^=]=%s", subopt, subparam);

			    mp_msg(MSGT_CFGPARSER, MSGL_DBG3, "token: '%s', i=%d, subopt='%s', subparam='%s' (ret: %d)\n", token, i, subopt, subparam, sscanf_ret);
			    switch(sscanf_ret)
			    {
				case 1:
				    subparam[0] = 0;
				case 2:
				    if ((ret = config_read_option(config,sublist, subopt, subparam)) < 0)
				    {
					mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Subconfig parsing returned error: %d in token: %s\n",
					    ret, token);
					goto out;
				    }
				    break;
				default:
				    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Invalid subconfig argument! ('%s')\n", token);
				    ret = ERR_NOT_AN_OPTION;
				    goto out;
			    }
			    token = strtok(NULL, (char *)&(":"));
			}

			free(subparam);
			free(subopt);
			ret = 1;
			break;
		    }
		case CONF_TYPE_PRINT:
			printf("%s", (char *) conf[i].p);
			exit(1);
		default:
			mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Unknown config type specified in conf-mplayer.h!\n");
			break;
	}
out:
	if(ret >= 0 && config->global == 0 && ! (conf[i].flags & CONF_GLOBAL)) {
	  play_tree_t* dest = config->last_entry ? config->last_entry : config->last_parent;
#ifdef MP_DEBUG
	  assert(dest != NULL);
#endif
	  if(ret == 0)
	    play_tree_set_param(dest,opt,NULL);
	  else if(ret > 0)
	    play_tree_set_param(dest,opt,param);
	  m_config_pop(config); 
	}
	return ret;
err_missing_param:
	mp_msg(MSGT_CFGPARSER, MSGL_ERR, "missing parameter for option: %s\n", opt);
	ret = ERR_MISSING_PARAM;
	goto out;
}

int m_config_set_option(m_config_t *config,char *opt, char *param) {

#ifdef MP_DEBUG
  assert(config != NULL);
  assert(opt != NULL);
#endif
  mp_msg(MSGT_CFGPARSER, MSGL_DBG2, "Setting option %s=%s\n",opt,param);
  return config_read_option(config,config->opt_list,opt,param);
}

int m_config_parse_config_file(m_config_t *config, char *conffile)
{
#define PRINT_LINENUM	printf("%s(%d): ", conffile, line_num)
#define MAX_LINE_LEN	1000
#define MAX_OPT_LEN	100
#define MAX_PARAM_LEN	100
	FILE *fp;
	char *line;
	char opt[MAX_OPT_LEN + 1];
	char param[MAX_PARAM_LEN + 1];
	char c;		/* for the "" and '' check */
	int tmp;
	int line_num = 0;
	int line_pos;	/* line pos */
	int opt_pos;	/* opt pos */
	int param_pos;	/* param pos */
	int ret = 1;
	int errors = 0;

#ifdef MP_DEBUG
	assert(config != NULL);
	//	assert(conf_list != NULL);
#endif
	if (++config->recursion_depth > 1)
		printf("Reading config file: %s", conffile);

	if (config->recursion_depth > MAX_RECURSION_DEPTH) {
		printf(": too deep 'include'. check your configfiles\n");
		ret = -1;
		goto out;
	}

	if (init_conf(config, CONFIG_FILE) == -1) {
		ret = -1;
		goto out;
	}

	if ((line = (char *) malloc(MAX_LINE_LEN + 1)) == NULL) {
		printf("\ncan't get memory for 'line': %s", strerror(errno));
		ret = -1;
		goto out;
	}

	if ((fp = fopen(conffile, "r")) == NULL) {
		if (config->recursion_depth > 1)
			printf(": %s\n", strerror(errno));
		free(line);
		ret = 0;
		goto out;
	}
	if (config->recursion_depth > 1)
		printf("\n");

	while (fgets(line, MAX_LINE_LEN, fp)) {
		if (errors >= 16) {
			printf("too many errors\n");
			goto out;
		}

		line_num++;
		line_pos = 0;

		/* skip whitespaces */
		while (isspace(line[line_pos]))
			++line_pos;

		/* EOL / comment */
		if (line[line_pos] == '\0' || line[line_pos] == '#')
			continue;

		/* read option. */
		for (opt_pos = 0; isprint(line[line_pos]) &&
				line[line_pos] != ' ' &&
				line[line_pos] != '#' &&
				line[line_pos] != '='; /* NOTHING */) {
			opt[opt_pos++] = line[line_pos++];
			if (opt_pos >= MAX_OPT_LEN) {
				PRINT_LINENUM;
				printf("too long option\n");
				errors++;
				ret = -1;
				goto nextline;
			}
		}
		if (opt_pos == 0) {
			PRINT_LINENUM;
			printf("parse error\n");
			ret = -1;
			errors++;
			continue;
		}
		opt[opt_pos] = '\0';

#ifdef MP_DEBUG
		PRINT_LINENUM;
		printf("option: %s\n", opt);
#endif

		/* skip whitespaces */
		while (isspace(line[line_pos]))
			++line_pos;

		/* check '=' */
		if (line[line_pos++] != '=') {
			PRINT_LINENUM;
			printf("option without parameter\n");
			ret = -1;
			errors++;
			continue;
		}

		/* whitespaces... */
		while (isspace(line[line_pos]))
			++line_pos;

		/* read the parameter */
		if (line[line_pos] == '"' || line[line_pos] == '\'') {
			c = line[line_pos];
			++line_pos;
			for (param_pos = 0; line[line_pos] != c; /* NOTHING */) {
				param[param_pos++] = line[line_pos++];
				if (param_pos >= MAX_PARAM_LEN) {
					PRINT_LINENUM;
					printf("too long parameter\n");
					ret = -1;
					errors++;
					goto nextline;
				}
			}
			line_pos++;	/* skip the closing " or ' */
		} else {
			for (param_pos = 0; isprint(line[line_pos]) && !isspace(line[line_pos])
					&& line[line_pos] != '#'; /* NOTHING */) {
				param[param_pos++] = line[line_pos++];
				if (param_pos >= MAX_PARAM_LEN) {
					PRINT_LINENUM;
					printf("too long parameter\n");
					ret = -1;
					errors++;
					goto nextline;
				}
			}
		}
		param[param_pos] = '\0';

		/* did we read a parameter? */
		if (param_pos == 0) {
			PRINT_LINENUM;
			printf("option without parameter\n");
			ret = -1;
			errors++;
			continue;
		}

#ifdef MP_DEBUG
		PRINT_LINENUM;
		printf("parameter: %s\n", param);
#endif

		/* now, check if we have some more chars on the line */
		/* whitespace... */
		while (isspace(line[line_pos]))
			++line_pos;

		/* EOL / comment */
		if (line[line_pos] != '\0' && line[line_pos] != '#') {
			PRINT_LINENUM;
			printf("extra characters on line: %s\n", line+line_pos);
			ret = -1;
		}

		tmp = m_config_set_option(config, opt, param);
		switch (tmp) {
		case ERR_NOT_AN_OPTION:
		case ERR_MISSING_PARAM:
		case ERR_OUT_OF_RANGE:
		case ERR_FUNC_ERR:
			PRINT_LINENUM;
			printf("%s\n", opt);
			ret = -1;
			errors++;
			continue;
			/* break */
		}	
nextline:
		;
	}

	free(line);
	fclose(fp);
out:
	--config->recursion_depth;
	return ret;
}

int m_config_parse_command_line(m_config_t *config, int argc, char **argv, char **envp)
{
	int i;
	int tmp;
	char *opt;
	int no_more_opts = 0;

#ifdef MP_DEBUG
	assert(config != NULL);
	assert(config->pt != NULL);
	assert(argv != NULL);
	assert(envp != NULL);
	assert(argc >= 1);
#endif
	
	if (init_conf(config, COMMAND_LINE) == -1)
		return -1;	
	if(config->last_parent == NULL)
	  config->last_parent = config->pt;
	/* in order to work recursion detection properly in parse_config_file */
	++config->recursion_depth;

	for (i = 1; i < argc; i++) {
	  //next:
		opt = argv[i];
		/* check for -- (no more options id.) except --help! */
		if ((*opt == '-') && (*(opt+1) == '-') && (*(opt+2) != 'h'))
		{
			no_more_opts = 1;
			if (i+1 >= argc)
			{
			    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "You added '--' but no filenames presented!\n");
			    goto err_out;
			}
			continue;
		}
		if((opt[0] == '{') && (opt[1] == '\0'))
		  {
		    play_tree_t* entry = play_tree_new();
		    config->global = 0;		    
		    if(config->last_entry == NULL) {
		      play_tree_set_child(config->last_parent,entry);
		    } else {
		      play_tree_append_entry(config->last_entry,entry);
		      config->last_entry = NULL;
		    }
		    config->last_parent = entry;
		    continue;
		  }

		if((opt[0] == '}') && (opt[1] == '\0'))
		  {
		    if( ! config->last_parent || ! config->last_parent->parent) {
		      mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too much }-\n");
		      goto err_out;
		    }
		    config->last_entry = config->last_parent;
		    config->last_parent = config->last_entry->parent;
		    continue;
		  }
			
		if ((no_more_opts == 0) && (*opt == '-') && (*(opt+1) != 0)) /* option */
		{
		    /* remove trailing '-' */
		    opt++;

		    mp_msg(MSGT_CFGPARSER, MSGL_DBG3, "this_opt = option: %s\n", opt);
		    tmp = m_config_set_option(config, opt, argv[i + 1]);

		    switch (tmp) {
		    case ERR_NOT_AN_OPTION:
		    case ERR_MISSING_PARAM:
		    case ERR_OUT_OF_RANGE:
		    case ERR_FUNC_ERR:
			mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Error %d while parsing option: '%s'!\n",
			    tmp, opt);
			goto err_out;
		    default:
			i += tmp;
			break;
		    }
		}
		else /* filename */
		{
		    play_tree_t* entry = play_tree_new();
		    mp_msg(MSGT_CFGPARSER, MSGL_DBG2,"Adding file %s\n",argv[i]);
		    play_tree_add_file(entry,argv[i]);
		    /* opt is not an option -> treat it as a filename */
		    config->global = 0; // We start entry specific options
		    if(config->last_entry == NULL)
		      play_tree_set_child(config->last_parent,entry);		      
		    else 
		      play_tree_append_entry(config->last_entry,entry);
		    config->last_entry = entry;
		}
	}

	--config->recursion_depth;
	if(config->last_parent != config->pt)
	  mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Missing }- ?\n");
	config->global = 1;
	return 1; 
#if 0
err_out_mem:
	mp_msg(MSGT_CFGPARSER, MSGL_ERR, "can't allocate memory for filenames (%s)\n", strerror(errno));
#endif
err_out:
	--config->recursion_depth;
	config->global = 1;
	mp_msg(MSGT_CFGPARSER, MSGL_ERR, "command line: %s\n", argv[i]);
	return -1;
}

void
m_config_register_options(m_config_t *config,config_t *args) {
  int list_len = 0;
  config_t** conf_list = config->opt_list;

#ifdef MP_DEBUG
  assert(config != NULL);
  assert(args != NULL);
#endif
  
  if(conf_list) {
    for ( ; conf_list[list_len] != NULL; list_len++)
      /* NOTHING */;
  }
  
  conf_list = (config_t**)realloc(conf_list,sizeof(struct conf*)*(list_len+2));
  if(conf_list == NULL) {
    mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Can't allocate %d bytes of memory : %s\n",sizeof(struct conf*)*(list_len+2),strerror(errno));
    return;
  }
  conf_list[list_len] = args;
  conf_list[list_len+1] = NULL;

  config->opt_list = conf_list;
}

config_t*
m_config_get_option(m_config_t *config, char* arg) {
  int i;
  config_t *conf;
  config_t **conf_list;

#ifdef MP_DEBUG
  assert(config != NULL);
  assert(arg != NULL);
#endif

  conf_list = config->opt_list;
  if(conf_list) {
    for(conf = conf_list[0]; conf != NULL ; conf ++) {
      for(i=0; conf[i].name != NULL; i++) {
	if(strcasecmp(conf[i].name,arg) == 0)
	  return &conf[i];
      }
    }
  }
  return NULL;
}