asxparser.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <stdarg.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "playtree.h"
  28 #include "playtreeparser.h"
  29 #include "stream/stream.h"
  30 #include "libmpdemux/demuxer.h"
  31 #include "asxparser.h"
  32 #include "mp_msg.h"
  33 #include "m_config.h"
  34
  35 ////// List utils
  36
  37 void
  38 asx_list_free(void* list_ptr,ASX_FreeFunc free_func) {
  39   void** ptr = *(void***)list_ptr;
  40   if(ptr == NULL) return;
  41   if(free_func != NULL) {
  42     for( ; *ptr != NULL ; ptr++)
  43       free_func(*ptr);
  44   }
  45   free(*(void**)list_ptr);
  46   *(void**)list_ptr = NULL;
  47 }
  48
  49 /////// Attribs utils
  50
  51 char*
  52 asx_get_attrib(const char* attrib,char** attribs) {
  53   char** ptr;
  54
  55   if(attrib == NULL || attribs == NULL) return NULL;
  56   for(ptr = attribs; ptr[0] != NULL; ptr += 2){
  57     if(strcasecmp(ptr[0],attrib) == 0)
  58       return strdup(ptr[1]);
  59   }
  60   return NULL;
  61 }
  62
  63 int
  64 asx_attrib_to_enum(const char* val,char** valid_vals) {
  65   char** ptr;
  66   int r = 0;
  67
  68   if(valid_vals == NULL || val == NULL) return -2;
  69   for(ptr = valid_vals ; ptr[0] != NULL ; ptr++) {
  70     if(strcasecmp(val,ptr[0]) == 0) return r;
  71     r++;
  72   }
  73
  74   return -1;
  75 }
  76
  77 #define asx_warning_attrib_required(p,e,a) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : element %s don't have the required attribute %s",p->line,e,a)
  78 #define asx_warning_body_parse_error(p,e) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing %s body",p->line,e)
  79
  80 ASX_Parser_t*
  81 asx_parser_new(struct m_config *mconfig)
  82 {
  83   ASX_Parser_t* parser = calloc(1,sizeof(ASX_Parser_t));
  84   parser->mconfig = mconfig;
  85   return parser;
  86 }
  87
  88 void
  89 asx_parser_free(ASX_Parser_t* parser) {
  90   if(!parser) return;
  91   free(parser->ret_stack);
  92   free(parser);
  93
  94 }
  95
  96 #define LETTER "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
  97 #define SPACE " \n\t\r"
  98
  99 int
 100 asx_parse_attribs(ASX_Parser_t* parser,char* buffer,char*** _attribs) {
 101   char *ptr1, *ptr2, *ptr3;
 102   int n_attrib = 0;
 103   char **attribs = NULL;
 104   char *attrib, *val;
 105
 106   ptr1 = buffer;
 107   while(1) {
 108     for( ; strchr(SPACE,*ptr1) != NULL; ptr1++) { // Skip space
 109       if(*ptr1 == '\0') break;
 110     }
 111     ptr3 = strchr(ptr1,'=');
 112     if(ptr3 == NULL) break;
 113     for(ptr2 = ptr3-1; strchr(SPACE,*ptr2) != NULL; ptr2--) {
 114       if (ptr2 == ptr1) {
 115         mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : this should never append, back to attribute begin while skipping end space",parser->line);
 116         break;
 117       }
 118     }
 119     attrib = malloc(ptr2-ptr1+2);
 120     strncpy(attrib,ptr1,ptr2-ptr1+1);
 121     attrib[ptr2-ptr1+1] = '\0';
 122
 123     ptr1 = strchr(ptr3,'"');
 124     if(ptr1 == NULL || ptr1[1] == '\0') ptr1 = strchr(ptr3,'\'');
 125     if(ptr1 == NULL || ptr1[1] == '\0') {
 126       mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : can't find attribute %s value",parser->line,attrib);
 127       free(attrib);
 128       break;
 129     }
 130     ptr2 = strchr(ptr1+1,ptr1[0]);
 131     if (ptr2 == NULL) {
 132       mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : value of attribute %s isn't finished",parser->line,attrib);
 133       free(attrib);
 134       break;
 135     }
 136     ptr1++;
 137     val = malloc(ptr2-ptr1+1);
 138     strncpy(val,ptr1,ptr2-ptr1);
 139     val[ptr2-ptr1] = '\0';
 140     n_attrib++;
 141
 142     attribs = realloc(attribs, (2 * n_attrib + 1) * sizeof(char*));
 143     attribs[n_attrib*2-2] = attrib;
 144     attribs[n_attrib*2-1] = val;
 145
 146     ptr1 = ptr2+1;
 147   }
 148
 149   if(n_attrib > 0)
 150     attribs[n_attrib*2] = NULL;
 151
 152   *_attribs = attribs;
 153
 154   return n_attrib;
 155 }
 156
 157 /*
 158  * Return -1 on error, 0 when nothing is found, 1 on sucess
 159  */
 160 int
 161 asx_get_element(ASX_Parser_t* parser,char** _buffer,
 162                 char** _element,char** _body,char*** _attribs) {
 163   char *ptr1,*ptr2, *ptr3, *ptr4;
 164   char *attribs = NULL;
 165   char *element = NULL, *body = NULL, *ret = NULL, *buffer;
 166   int n_attrib = 0;
 167   int body_line = 0,attrib_line,ret_line,in = 0;
 168   int quotes = 0;
 169
 170   if(_buffer == NULL || _element == NULL || _body == NULL || _attribs == NULL) {
 171     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : asx_get_element called with invalid value",parser->line);
 172     return -1;
 173   }
 174
 175   *_body = *_element = NULL;
 176   *_attribs =  NULL;
 177   buffer = *_buffer;
 178
 179   if(buffer == NULL) return 0;
 180
 181   if(parser->ret_stack && /*parser->last_body && */buffer != parser->last_body) {
 182     ASX_LineSave_t* ls = parser->ret_stack;
 183     int i;
 184     for(i = 0 ; i < parser->ret_stack_size ; i++) {
 185       if(buffer == ls[i].buffer) {
 186         parser->line = ls[i].line;
 187         break;
 188       }
 189
 190     }
 191     if( i < parser->ret_stack_size) {
 192       i++;
 193       if( i < parser->ret_stack_size)
 194         memmove(parser->ret_stack,parser->ret_stack+i, (parser->ret_stack_size - i)*sizeof(ASX_LineSave_t));
 195       parser->ret_stack_size -= i;
 196       if(parser->ret_stack_size > 0)
 197         parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t));
 198       else {
 199         free(parser->ret_stack);
 200         parser->ret_stack = NULL;
 201       }
 202     }
 203   }
 204
 205   ptr1 = buffer;
 206   while(1) {
 207     for( ; ptr1[0] != '<' ; ptr1++) {
 208       if(ptr1[0] == '\0') {
 209         ptr1 = NULL;
 210         break;
 211       }
 212       if(ptr1[0] == '\n') parser->line++;
 213     }
 214     //ptr1 = strchr(ptr1,'<');
 215     if(!ptr1 || ptr1[1] == '\0') return 0; // Nothing found
 216
 217     if(strncmp(ptr1,"<!--",4) == 0) { // Comments
 218       for( ; strncmp(ptr1,"-->",3) != 0 ; ptr1++) {
 219         if(ptr1[0] == '\0') {
 220           ptr1 = NULL;
 221           break;
 222         }
 223         if(ptr1[0] == '\n') parser->line++;
 224       }
 225       //ptr1 = strstr(ptr1,"-->");
 226       if(!ptr1) {
 227         mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : unfinished comment",parser->line);
 228         return -1;
 229       }
 230     } else {
 231       break;
 232     }
 233   }
 234
 235   // Is this space skip very useful ??
 236   for(ptr1++; strchr(SPACE,ptr1[0]) != NULL; ptr1++) { // Skip space
 237     if(ptr1[0] == '\0') {
 238       mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
 239       return -1;
 240     }
 241     if(ptr1[0] == '\n') parser->line++;
 242   }
 243
 244   for(ptr2 = ptr1; strchr(LETTER,*ptr2) != NULL;ptr2++) { // Go to end of name
 245     if(*ptr2 == '\0'){
 246       mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
 247       return -1;
 248     }
 249     if(ptr2[0] == '\n') parser->line++;
 250   }
 251
 252   element = malloc(ptr2-ptr1+1);
 253   strncpy(element,ptr1,ptr2-ptr1);
 254   element[ptr2-ptr1] = '\0';
 255
 256   for( ; strchr(SPACE,*ptr2) != NULL; ptr2++) { // Skip space
 257     if(ptr2[0] == '\0') {
 258       mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
 259       free(element);
 260       return -1;
 261     }
 262     if(ptr2[0] == '\n') parser->line++;
 263   }
 264   attrib_line = parser->line;
 265
 266
 267
 268   for(ptr3 = ptr2; ptr3[0] != '\0'; ptr3++) { // Go to element end
 269     if(ptr3[0] == '"') quotes ^= 1;
 270     if(!quotes && (ptr3[0] == '>' || strncmp(ptr3,"/>",2) == 0))
 271       break;
 272     if(ptr3[0] == '\n') parser->line++;
 273   }
 274   if(ptr3[0] == '\0' || ptr3[1] == '\0') { // End of file
 275     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line);
 276     free(element);
 277     return -1;
 278   }
 279
 280   // Save attribs string
 281   if(ptr3-ptr2 > 0) {
 282     attribs = malloc(ptr3-ptr2+1);
 283     strncpy(attribs,ptr2,ptr3-ptr2);
 284     attribs[ptr3-ptr2] = '\0';
 285   }
 286   //bs_line = parser->line;
 287   if(ptr3[0] != '/') { // Not Self closed element
 288     ptr3++;
 289     for( ; strchr(SPACE,*ptr3) != NULL; ptr3++) { // Skip space on body begin
 290       if(*ptr3 == '\0') {
 291         mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element);
 292         free(element);
 293         free(attribs);
 294         return -1;
 295       }
 296       if(ptr3[0] == '\n') parser->line++;
 297     }
 298     ptr4 = ptr3;
 299     body_line = parser->line;
 300     while(1) { // Find closing element
 301       for( ; ptr4[0] != '<' ; ptr4++) {
 302         if(ptr4[0] == '\0') {
 303           ptr4 = NULL;
 304           break;
 305         }
 306         if(ptr4[0] == '\n') parser->line++;
 307       }
 308       if(ptr4 && strncmp(ptr4,"<!--",4) == 0) { // Comments
 309         for( ; strncmp(ptr4,"-->",3) != 0 ; ptr4++) {
 310         if(ptr4[0] == '\0') {
 311           ptr4 = NULL;
 312           break;
 313         }
 314         if(ptr1[0] == '\n') parser->line++;
 315         }
 316         continue;
 317       }
 318       if(ptr4 == NULL || ptr4[1] == '\0') {
 319         mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element);
 320         free(element);
 321         free(attribs);
 322         return -1;
 323       }
 324       if(ptr4[1] != '/' && strncasecmp(element,ptr4+1,strlen(element)) == 0) {
 325         in++;
 326         ptr4+=2;
 327         continue;
 328       } else if(strncasecmp(element,ptr4+2,strlen(element)) == 0) { // Extract body
 329         if(in > 0) {
 330           in--;
 331           ptr4 += 2+strlen(element);
 332           continue;
 333         }
 334         ret = ptr4+strlen(element)+3;
 335         if(ptr4 != ptr3) {
 336           ptr4--;
 337           for( ; ptr4 != ptr3 && strchr(SPACE,*ptr4) != NULL; ptr4--) ;// Skip space on body end
 338           //        if(ptr4[0] == '\0') parser->line--;
 339           //}
 340           ptr4++;
 341           body = malloc(ptr4-ptr3+1);
 342           strncpy(body,ptr3,ptr4-ptr3);
 343           body[ptr4-ptr3] = '\0';
 344         }
 345         break;
 346       } else {
 347         ptr4 += 2;
 348       }
 349     }
 350   } else {
 351     ret = ptr3 + 2; // 2 is for />
 352   }
 353
 354   for( ; ret[0] != '\0' && strchr(SPACE,ret[0]) != NULL; ret++) { // Skip space
 355     if(ret[0] == '\n') parser->line++;
 356   }
 357
 358   ret_line = parser->line;
 359
 360   if(attribs) {
 361     parser->line = attrib_line;
 362     n_attrib = asx_parse_attribs(parser,attribs,_attribs);
 363     free(attribs);
 364     if(n_attrib < 0) {
 365       mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing element %s attributes",parser->line,element);
 366       free(element);
 367       free(body);
 368       return -1;
 369     }
 370   } else
 371     *_attribs = NULL;
 372
 373   *_element = element;
 374   *_body = body;
 375
 376   parser->last_body = body;
 377   parser->ret_stack_size++;
 378   parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t));
 379   if(parser->ret_stack_size > 1)
 380     memmove(parser->ret_stack+1,parser->ret_stack,(parser->ret_stack_size-1)*sizeof(ASX_LineSave_t));
 381   parser->ret_stack[0].buffer = ret;
 382   parser->ret_stack[0].line = ret_line;
 383   parser->line = body ? body_line : ret_line;
 384
 385   *_buffer = ret;
 386   return 1;
 387
 388 }
 389
 390 static void
 391 asx_parse_param(ASX_Parser_t* parser, char** attribs, play_tree_t* pt) {
 392   char *name,*val;
 393
 394   name = asx_get_attrib("NAME",attribs);
 395   if(!name) {
 396     asx_warning_attrib_required(parser,"PARAM" ,"NAME" );
 397     return;
 398   }
 399   val = asx_get_attrib("VALUE",attribs);
 400   if(m_config_get_option(parser->mconfig,name) == NULL) {
 401     mp_msg(MSGT_PLAYTREE,MSGL_WARN,"Found unknown param in asx: %s",name);
 402     if(val)
 403       mp_msg(MSGT_PLAYTREE,MSGL_WARN,"=%s\n",val);
 404     else
 405       mp_msg(MSGT_PLAYTREE,MSGL_WARN,"\n");
 406     return;
 407   }
 408   play_tree_set_param(pt,name,val);
 409   free(name);
 410   free(val);
 411 }
 412
 413 static void
 414 asx_parse_ref(ASX_Parser_t* parser, char** attribs, play_tree_t* pt) {
 415   char *href;
 416
 417   href = asx_get_attrib("HREF",attribs);
 418   if(href == NULL) {
 419     asx_warning_attrib_required(parser,"REF" ,"HREF" );
 420     return;
 421   }
 422 #if 0
 423   // replace http my mmshttp to avoid infinite loops
 424   // disabled since some playlists for e.g. WinAMP use asx as well
 425   // "-user-agent NSPlayer/4.1.0.3856" is a possible workaround
 426   if (strncmp(href, "http://", 7) == 0) {
 427     char *newref = malloc(3 + strlen(href) + 1);
 428     strcpy(newref, "mms");
 429     strcpy(newref + 3, href);
 430     free(href);
 431     href = newref;
 432   }
 433 #endif
 434
 435   play_tree_add_file(pt,href);
 436
 437   mp_msg(MSGT_PLAYTREE,MSGL_V,"Adding file %s to element entry\n",href);
 438
 439   free(href);
 440
 441 }
 442
 443 static play_tree_t*
 444 asx_parse_entryref(ASX_Parser_t* parser,char* buffer,char** _attribs) {
 445   play_tree_t* pt;
 446   char *href;
 447   stream_t* stream;
 448   play_tree_parser_t* ptp;
 449   int f=DEMUXER_TYPE_UNKNOWN;
 450
 451   if(parser->deep > 0)
 452     return NULL;
 453
 454   href = asx_get_attrib("HREF",_attribs);
 455   if(href == NULL) {
 456     asx_warning_attrib_required(parser,"ENTRYREF" ,"HREF" );
 457     return NULL;
 458   }
 459   stream=open_stream(href,0,&f);
 460   if(!stream) {
 461     mp_msg(MSGT_PLAYTREE,MSGL_WARN,"Can't open playlist %s\n",href);
 462     free(href);
 463     return NULL;
 464   }
 465
 466   mp_msg(MSGT_PLAYTREE,MSGL_V,"Adding playlist %s to element entryref\n",href);
 467
 468   ptp = play_tree_parser_new(stream, parser->mconfig, parser->deep+1);
 469
 470   pt = play_tree_parser_get_play_tree(ptp, 1);
 471
 472   play_tree_parser_free(ptp);
 473   free_stream(stream);
 474   free(href);
 475   //mp_msg(MSGT_PLAYTREE,MSGL_INFO,"Need to implement entryref\n");
 476
 477   return pt;
 478 }
 479
 480 static play_tree_t*
 481 asx_parse_entry(ASX_Parser_t* parser,char* buffer,char** _attribs) {
 482   char *element,*body,**attribs;
 483   int r,nref=0;
 484   play_tree_t *ref;
 485
 486   ref = play_tree_new();
 487
 488   while(buffer && buffer[0] != '\0') {
 489     r = asx_get_element(parser,&buffer,&element,&body,&attribs);
 490     if(r < 0) {
 491       asx_warning_body_parse_error(parser,"ENTRY");
 492       return NULL;
 493     } else if (r == 0) { // No more element
 494       break;
 495     }
 496     if(strcasecmp(element,"REF") == 0) {
 497       asx_parse_ref(parser,attribs,ref);
 498       mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to entry\n",element);
 499       nref++;
 500     } else
 501       mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
 502     free(body);
 503     asx_free_attribs(attribs);
 504   }
 505
 506   if(nref <= 0) {
 507     play_tree_free(ref,1);
 508     return NULL;
 509   }
 510   return ref;
 511
 512 }
 513
 514
 515 static play_tree_t*
 516 asx_parse_repeat(ASX_Parser_t* parser,char* buffer,char** _attribs) {
 517   char *element,*body,**attribs;
 518   play_tree_t *repeat, *list=NULL, *entry;
 519   char* count;
 520   int r;
 521
 522   repeat = play_tree_new();
 523
 524   count = asx_get_attrib("COUNT",_attribs);
 525   if(count == NULL) {
 526     mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Setting element repeat loop to infinit\n");
 527     repeat->loop = -1; // Infinit
 528   } else {
 529     repeat->loop = atoi(count);
 530     free(count);
 531     if(repeat->loop == 0) repeat->loop = 1;
 532     mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Setting element repeat loop to %d\n",repeat->loop);
 533   }
 534
 535   while(buffer && buffer[0] != '\0') {
 536     r = asx_get_element(parser,&buffer,&element,&body,&attribs);
 537     if(r < 0) {
 538       asx_warning_body_parse_error(parser,"REPEAT");
 539       return NULL;
 540     } else if (r == 0) { // No more element
 541       break;
 542     }
 543     if(strcasecmp(element,"ENTRY") == 0) {
 544        entry = asx_parse_entry(parser,body,attribs);
 545        if(entry) {
 546          if(!list) list =  entry;
 547          else play_tree_append_entry(list,entry);
 548          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to repeat\n",element);
 549        }
 550     } else if(strcasecmp(element,"ENTRYREF") == 0) {
 551        entry = asx_parse_entryref(parser,body,attribs);
 552        if(entry) {
 553          if(!list) list =  entry;
 554          else play_tree_append_entry(list,entry);
 555          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to repeat\n",element);
 556        }
 557      } else if(strcasecmp(element,"REPEAT") == 0) {
 558        entry = asx_parse_repeat(parser,body,attribs);
 559        if(entry) {
 560          if(!list) list =  entry;
 561          else play_tree_append_entry(list,entry);
 562          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to repeat\n",element);
 563        }
 564      } else if(strcasecmp(element,"PARAM") == 0) {
 565        asx_parse_param(parser,attribs,repeat);
 566      } else
 567        mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
 568      free(body);
 569      asx_free_attribs(attribs);
 570   }
 571
 572   if(!list) {
 573     play_tree_free(repeat,1);
 574     return NULL;
 575   }
 576   play_tree_set_child(repeat,list);
 577
 578   return repeat;
 579
 580 }
 581
 582
 583
 584 play_tree_t*
 585 asx_parser_build_tree(struct m_config *mconfig, char* buffer,int deep) {
 586   char *element,*asx_body,**asx_attribs,*body = NULL, **attribs;
 587   int r;
 588   play_tree_t *asx,*entry,*list = NULL;
 589   ASX_Parser_t* parser = asx_parser_new(mconfig);
 590
 591   parser->line = 1;
 592   parser->deep = deep;
 593
 594    r = asx_get_element(parser,&buffer,&element,&asx_body,&asx_attribs);
 595   if(r < 0) {
 596     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : Syntax error ???",parser->line);
 597     asx_parser_free(parser);
 598     return NULL;
 599   } else if(r == 0) { // No contents
 600     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"empty asx element");
 601     asx_parser_free(parser);
 602     return NULL;
 603   }
 604
 605   if(strcasecmp(element,"ASX") != 0) {
 606     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"first element isn't ASX, it's %s\n",element);
 607     asx_free_attribs(asx_attribs);
 608     asx_parser_free(parser);
 609     return NULL;
 610   }
 611
 612   if(!asx_body) {
 613     mp_msg(MSGT_PLAYTREE,MSGL_ERR,"ASX element is empty");
 614     asx_free_attribs(asx_attribs);
 615     asx_parser_free(parser);
 616     return NULL;
 617   }
 618
 619   asx = play_tree_new();
 620   buffer = asx_body;
 621   while(buffer && buffer[0] != '\0') {
 622     r = asx_get_element(parser,&buffer,&element,&body,&attribs);
 623      if(r < 0) {
 624        asx_warning_body_parse_error(parser,"ASX");
 625        asx_parser_free(parser);
 626        return NULL;
 627      } else if (r == 0) { // No more element
 628        break;
 629      }
 630      if(strcasecmp(element,"ENTRY") == 0) {
 631        entry = asx_parse_entry(parser,body,attribs);
 632        if(entry) {
 633          if(!list) list =  entry;
 634          else play_tree_append_entry(list,entry);
 635          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to asx\n",element);
 636        }
 637      } else if(strcasecmp(element,"ENTRYREF") == 0) {
 638        entry = asx_parse_entryref(parser,body,attribs);
 639        if(entry) {
 640          if(!list) list =  entry;
 641          else play_tree_append_entry(list,entry);
 642          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to asx\n",element);
 643        }
 644      } else if(strcasecmp(element,"REPEAT") == 0) {
 645        entry = asx_parse_repeat(parser,body,attribs);
 646        if(entry) {
 647          if(!list) list =  entry;
 648          else play_tree_append_entry(list,entry);
 649          mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to asx\n",element);
 650        }
 651      } else
 652        mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element);
 653      free(body);
 654      asx_free_attribs(attribs);
 655   }
 656
 657   free(asx_body);
 658   asx_free_attribs(asx_attribs);
 659   asx_parser_free(parser);
 660
 661
 662   if(!list) {
 663     play_tree_free(asx,1);
 664
 665     return NULL;
 666   }
 667
 668   play_tree_set_child(asx,list);
 669
 670   return asx;
 671 }