/**
 * @file lxml.c
 *
 * Handles some complex xml parsing.
 */

#include "lephisto.h"
#include "lxml.h"

/**
 * @brief Parses a texture handling the sx and sy elements.
 *    @param node Node to parse.
 *    @param path Path to get file from, should be in the format of
 *        "PREFIX%sSUFFIX".
 *    @param defsx Default X sprites.
 *    @param defsy Default Y sprites.
 *    @param flags Image parameter control flags.
 *    @return The texture from the node or NULL if an error occurred.
 */
glTexture* xml_parseTexture(xmlNodePtr node,
    const char* path, int defsx, int defsy,
    const unsigned int flags) {
  
  int sx, sy;
  char* buf, filename[PATH_MAX];
  glTexture* tex;

  /* Sane defaults. */
  sx = defsx;
  sy = defsy;

  /* Read x sprites. */
  xmlr_attr(node, "sx", buf);
  if(buf != NULL) {
    sx = atoi(buf);
    free(buf);
  }

  /* Read y sprites. */
  xmlr_attr(node, "sy", buf);
  if(buf != NULL) {
    sy = atoi(buf);
    free(buf);
  }

  /* Get graphic to load. */
  buf = xml_get(node);
  if(buf == NULL)
    return NULL;

  /* Convert name. */
  snprintf(filename, PATH_MAX, (path != NULL) ? path : "%s", buf);

  /* Load the graphic. */
  if((sx == 1) && (sy == 1))
    tex = gl_newImage(filename, flags);
  else
    tex = gl_newSprite(filename, sx, sy, flags);

  /* Return result. */
  return tex;
}