From fde0350414afeae6346d1e818da7e1978edfd92d Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 16 Dec 2013 20:25:49 +0100
Subject: [PATCH] Add ol.format.IGC

---
 src/objectliterals.jsdoc        |   6 ++
 src/ol/format/igcformat.exports |   1 +
 src/ol/format/igcformat.js      | 154 ++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+)
 create mode 100644 src/ol/format/igcformat.exports
 create mode 100644 src/ol/format/igcformat.js

diff --git a/src/objectliterals.jsdoc b/src/objectliterals.jsdoc
index 6f981585ed..5c66ab9706 100644
--- a/src/objectliterals.jsdoc
+++ b/src/objectliterals.jsdoc
@@ -254,6 +254,12 @@
  * @property {ol.proj.ProjectionLike} defaultProjection Default projection.
  */
 
+/**
+ * @typedef {Object} olx.format.IGCOptions
+ * @property {ol.format.IGCZ|undefined} altitudeMode Altitude mode.
+ *     Possible values are `barometric`, `gps`, and `none`. Default is `none`.
+ */
+
 /**
  * @typedef {Object} olx.interaction.DoubleClickZoomOptions
  * @property {number|undefined} duration Animation duration in milliseconds. Default is `250`.
diff --git a/src/ol/format/igcformat.exports b/src/ol/format/igcformat.exports
new file mode 100644
index 0000000000..640005aa90
--- /dev/null
+++ b/src/ol/format/igcformat.exports
@@ -0,0 +1 @@
+@exportSymbol ol.format.IGC
diff --git a/src/ol/format/igcformat.js b/src/ol/format/igcformat.js
new file mode 100644
index 0000000000..826c62c1c3
--- /dev/null
+++ b/src/ol/format/igcformat.js
@@ -0,0 +1,154 @@
+goog.provide('ol.format.IGC');
+
+goog.require('goog.asserts');
+goog.require('goog.string');
+goog.require('goog.string.newlines');
+goog.require('ol.Feature');
+goog.require('ol.format.Text');
+goog.require('ol.geom.LineString');
+goog.require('ol.proj');
+
+
+/**
+ * @enum {string}
+ */
+ol.format.IGCZ = {
+  BAROMETRIC: 'barometric',
+  GPS: 'gps',
+  NONE: 'none'
+};
+
+
+
+/**
+ * @constructor
+ * @extends {ol.format.Text}
+ * @param {olx.format.IGCOptions=} opt_options Options.
+ */
+ol.format.IGC = function(opt_options) {
+
+  var options = goog.isDef(opt_options) ? opt_options : {};
+
+  goog.base(this);
+
+  /**
+   * @private
+   * @type {ol.format.IGCZ}
+   */
+  this.altitudeMode_ = goog.isDef(options.altitudeMode) ?
+      options.altitudeMode : ol.format.IGCZ.NONE;
+
+};
+goog.inherits(ol.format.IGC, ol.format.Text);
+
+
+/**
+ * @const {RegExp}
+ * @private
+ */
+ol.format.IGC.B_RECORD_RE_ =
+    /^B(\d{2})(\d{2})(\d{2})(\d{2})(\d{5})([NS])(\d{3})(\d{5})([EW])([AV])(\d{5})(\d{5})/;
+
+
+/**
+ * @const {RegExp}
+ * @private
+ */
+ol.format.IGC.H_RECORD_RE_ = /^H.([A-Z]{3}).*?:(.*)/;
+
+
+/**
+ * @const {RegExp}
+ * @private
+ */
+ol.format.IGC.HFDTE_RECORD_RE_ = /^HFDTE(\d{2})(\d{2})(\d{2})/;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.readFeatureFromText = function(text) {
+  var altitudeMode = this.altitudeMode_;
+  var lines = goog.string.newlines.splitLines(text);
+  /** @type {Object.<string, string>} */
+  var properties = {};
+  var flatCoordinates = [];
+  var year = 2000;
+  var month = 1;
+  var day = 1;
+  var i, ii;
+  for (i = 0, ii = lines.length; i < ii; ++i) {
+    var line = lines[i];
+    var m;
+    if (line.charAt(0) == 'B') {
+      m = ol.format.IGC.B_RECORD_RE_.exec(line);
+      if (m) {
+        var hour = parseInt(m[1], 10);
+        var minute = parseInt(m[2], 10);
+        var second = parseInt(m[3], 10);
+        var y = parseInt(m[4], 10) + parseInt(m[5], 10) / 60000;
+        if (m[6] == 'S') {
+          y = -y;
+        }
+        var x = parseInt(m[7], 10) + parseInt(m[8], 10) / 60000;
+        if (m[9] == 'W') {
+          x = -x;
+        }
+        flatCoordinates.push(x, y);
+        if (altitudeMode != ol.format.IGCZ.NONE) {
+          var z;
+          if (altitudeMode == ol.format.IGCZ.GPS) {
+            z = parseInt(m[11], 10);
+          } else if (altitudeMode == ol.format.IGCZ.BAROMETRIC) {
+            z = parseInt(m[12], 10);
+          } else {
+            goog.asserts.fail();
+            z = 0;
+          }
+          flatCoordinates.push(z);
+        }
+        var date = new Date(year, month, day, hour, minute, second, 0);
+        flatCoordinates.push(date.getTime() / 1000);
+      }
+    } else if (line.charAt(0) == 'H') {
+      m = ol.format.IGC.H_RECORD_RE_.exec(line);
+      if (m) {
+        properties[m[1]] = goog.string.trim(m[2]);
+        m = ol.format.IGC.HFDTE_RECORD_RE_.exec(line);
+        if (m) {
+          year = 2000 + parseInt(m[1], 10);
+          month = parseInt(m[2], 10);
+          day = parseInt(m[3], 10);
+        }
+      }
+    }
+  }
+  var lineString = new ol.geom.LineString(null);
+  var layout = altitudeMode == ol.format.IGCZ.NONE ?
+      ol.geom.GeometryLayout.XYM : ol.geom.GeometryLayout.XYZM;
+  lineString.setFlatCoordinates(layout, flatCoordinates);
+  var feature = new ol.Feature(lineString);
+  feature.setValues(properties);
+  return feature;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.readFeaturesFromText = function(text) {
+  var feature = this.readFeatureFromText(text);
+  if (!goog.isNull(feature)) {
+    return [feature];
+  } else {
+    return [];
+  }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.IGC.prototype.readProjectionFromText = function(text) {
+  return ol.proj.get('EPSG:4326');
+};