<?php

/**
 * @file
 * Parsing utilities for GPX track files.
 *
 * Originally written to cover a more comprehensive usage than what Geocode
 * is doing, but handy nonetheless.
 */

$plugin = array(
  'title' => t('GPX'),
  'description' => t('Get the geometry of a GPX string or file'),
  'callback' => 'geocoder_gpx',
  'field_types' => array('text', 'text_long', 'file', 'computed'),
  'field_callback' => 'geocoder_gpx_field',
);

/**
 * Process GPX.
 */
function geocoder_gpx($gpx_string, $options = array()) {
  geophp_load();

  return geoPHP::load($gpx_string, 'gpx');
}

/**
 * Plugin callback.
 */
function geocoder_gpx_field($field, $field_item) {
  if ($field['type'] === 'text' || $field['type'] === 'text_long' || $field['type'] === 'computed') {
    return geocoder_gpx($field_item['value']);
  }

  if ($field['type'] === 'file') {
    if ($field_item['fid']) {
      $file = file_load($field_item['fid']);
      $gpx = file_get_contents($file->uri);

      return geocoder_gpx($gpx);
    }
  }
}