C libxml2 xmlTextWriter Tags nest sich selbst zufällig

Question

Ich habe eine Struktur, die ich versuche, als XML zu speichern, es scheint keine Probleme mit der Erstellung kleiner XMLs zu haben, aber im Fall von größeren Dateien scheint es die späteren Tags zu verschachteln, für die ersten 30 oder so korrekten Ergebnisse im Format erhalte ich:

<argument><kind>2</kind><string>video.avi</string></argument><argument><kind>4</kind><string>0</string></argument> 

jedoch nach einer Weile der Dinge beginnen, gehen in dem Format:

<argument><kind>5</kind><string/><argument><kind>2</kind><string>sprite.gif</string></argument></argument> 

die nicht korrekt ist, sollten die Argumente nicht verschachtelt sein.

//Save an obiect as in xml/gm format 
int save_obj(struct gm_object obj, char *file_str) 
{ 
    xmlTextWriterPtr writer; 
    xmlChar *tmp; 
    // Create a new XmlWriter for uri, with no compression. 
    writer = xmlNewTextWriterFilename(file_str, 0); 
    if (writer == NULL) 
    { 
    return 1; //1 = error 
    } 
    xmlTextWriterStartDocument(writer, NULL, "UTF-8", "no"); 
    //Root 
    xmlTextWriterStartElement(writer, BAD_CAST "object"); 
    xmlTextWriterWriteElement(writer, BAD_CAST "spriteName", BAD_CAST obj.spriteName); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "solid","%i",obj.solid); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "visible","%i",obj.visible); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "depth","%i",obj.depth); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "persistent","%i",obj.persistent); 
    xmlTextWriterWriteElement(writer, BAD_CAST "maskName", BAD_CAST obj.maskName); 
    xmlTextWriterWriteElement(writer, BAD_CAST "parentName", BAD_CAST obj.parentName); 
    xmlTextWriterStartElement(writer, BAD_CAST "events"); 
    //This is where we store any ints that need to be converted to strings 
    char str_int_converted[(CHAR_BIT * sizeof(int) - 1)/3 + 2]; 
    int i; 
    for (i = 0; i<obj.event_count-1;i++) 
    { 
    xmlTextWriterStartElement(writer, BAD_CAST "event"); 
    sprintf(str_int_converted, "%d", obj.events[i].enumb); 
    xmlTextWriterWriteAttribute(writer, BAD_CAST "enumb", BAD_CAST str_int_converted); 
    sprintf(str_int_converted, "%d", obj.events[i].eventtype); 
    xmlTextWriterWriteAttribute(writer, BAD_CAST "eventtype", BAD_CAST str_int_converted); 
    int ii; 
    for (ii = 0; ii<obj.events[i].action_count-1;ii++) 
    { 
     xmlTextWriterStartElement(writer, BAD_CAST "action"); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "libid", "%i", obj.events[i].actions[ii].libid); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "id","%i", obj.events[i].actions[ii].id); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "kind","%i", obj.events[i].actions[ii].kind); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "userelative","%i", obj.events[i].actions[ii].userelative); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "useapplyto", "%i", obj.events[i].actions[ii].useapplyto); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "isquestion", "%i", obj.events[i].actions[ii].isquestion); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "exetype","%i", obj.events[i].actions[ii].exetype); 
     xmlTextWriterWriteElement(writer, BAD_CAST "functionname", BAD_CAST obj.events[i].actions[ii].functionname); 
     xmlTextWriterWriteElement(writer, BAD_CAST "codestring", BAD_CAST obj.events[i].actions[ii].codestring); 
     xmlTextWriterWriteElement(writer, BAD_CAST "whoName", BAD_CAST obj.events[i].actions[ii].whoName); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "relative","%i", obj.events[i].actions[ii].relative); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "isnot","%i", obj.events[i].actions[ii].isnot); 
     xmlTextWriterStartElement(writer, BAD_CAST "arguments"); 
     int iii; 
     for (iii = 0; iii<obj.events[i].actions[ii].arg_count-1;iii++) 
     { 
     //causing some of these to nest rather than properly close 
     xmlTextWriterStartElement(writer, BAD_CAST "argument"); 
     xmlTextWriterWriteFormatElement(writer, BAD_CAST "kind", "%i", obj.events[i].actions[ii].arguments[iii].kind); 
     xmlTextWriterWriteElement(writer, BAD_CAST "string", obj.events[i].actions[ii].arguments[iii].string); 
     xmlTextWriterEndElement(writer); //Close <argument> 
     } 
     xmlTextWriterEndElement(writer); //Close <arguments> 
     xmlTextWriterEndElement(writer); //Close <action> 
    } 
    xmlTextWriterEndElement(writer); //Close <event> 
    } 
    xmlTextWriterEndElement(writer); //Close <events> 
    //Put physics stuff here 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObject","%i", obj.PhysicsObject); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectSensor","%i", obj.PhysicsObjectSensor); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectShape","%i", obj.PhysicsObjectShape); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectDensity","%f", obj.PhysicsObjectDensity); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectRestitution","%f", obj.PhysicsObjectRestitution); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectGroup","%i", obj.PhysicsObjectGroup); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectLinearDamping","%f", obj.PhysicsObjectLinearDamping); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectAngularDamping","%f", obj.PhysicsObjectAngularDamping); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectFriction","%f", obj.PhysicsObjectFriction); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectAwake","%i", obj.PhysicsObjectAwake); 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "PhysicsObjectKinematic","%i", obj.PhysicsObjectKinematic); 
    xmlTextWriterStartElement(writer, BAD_CAST "PhysicsShapePoints"); 
    //This is where we store any floats that need to be converted to strings 
    char str_float_converted[(CHAR_BIT * sizeof(float) - 1)/3 + 2]; 
    for (i=0;i<obj.point_count;i++) 
    { 
    xmlTextWriterWriteFormatElement(writer, BAD_CAST "point","%i,%i", obj.PhysicsShapePoints[i].x, obj.PhysicsShapePoints[i].y); 
    } 
    xmlTextWriterEndElement(writer); //Close <PhysicsShapePoints> 
    xmlTextWriterEndDocument(writer); 
    xmlFreeTextWriter(writer); 
} 

Hier ist die vollständige Datei es produziert: http://pastebin.com/raw/iJHYWkWq Leider habe ich nicht in der Lage war es in den Körper von diesem Post zu setzen, weil es über die normale Zeichenbegrenzung ging. Ich wäre sehr dankbar für jede Hilfe, ich habe seit 4 Stunden an diesem Bug gearbeitet und ich kann anscheinend niemanden finden, der dieses Problem hatte, geschweige denn, es repariert zu haben.

Answer 1

Das xmlTextWriterWriteElement() funktioniert nicht gut, wenn Sie es einen NULL übergeben. Stellen Sie vor dem Aufruf der API sicher, dass die Zeichenfolge nicht NULL ist, oder verwenden Sie xmlTextWriterWriteFormatElement() und% s als Format.