TrackKit

TrackKit allows you to easily parse log files in Swift.

Supported Formats

GPX

The GPX formats that are supported are versions 1.0 and 1.1 as described in schema documentation for 1.0 and schema documentation for 1.1.

LOC

The GPX format that is supported is version 1.0. No schema description was found for this format, but we looked at how Geoaching used it.

NMEA

The NMEA format that is supported is version NMEA-0183. The different identifiers that are supported by TrackKit are:

• GPGGA
• GPGLL
• GPRMC
• GPWPL

TCX

The TCX format that is supported is version 2 as described in the schema documentation.

FIT

The FIT format support is available throught the Garmin FIT SDK.

TRACK

The TRACKformat is a custom format that is created by yours truly. It looks to be a custom data file, but when you just open a .track file with a text editor you'll notice that it is a simple JSON format. Here is an example on how it's formatted:

[
	{
		"latitude": 10.0,
		"longitude": 20.0,
		"altitude": 120,
		"horizontalAccuracy": 10,
		"verticalAccuracy": 10, 
		"course": 30,
		"speed": 12,
		"timestamp": 123456 
	}
]

Integration

Add this pod to your Podfile by adding the following line:

pod 'TrackKit', '~> 2.4'

It's important to add the version to the pod 'TrackKit', this way you are sure that a next update of the pod will not break your code.

Usage

You can take a look at the different specs on how to use this pod. But for now I describe in short how it can be used.

GPX

Here is a sample GPX file with some data:

<gpx version='1.1' creator='TrackKit'>
  <metadata>
    <name>Jelle Vandebeeck</name>
    <desc>A GPX file</desc>
    <time>2016-03-10T10:05:12+02:00</time>
    <keywords>hiking, forest, wild</keywords>
  </metadata>
</gpx>

The only thing you have to do is make sure to get the contents of the GPX file into an Data structure. When you have this you can easily parse the file into a File.

let content: String = '...'
let data = content.data(using: .utf8)
let file = try! TrackParser(data: data, type: .gpx).parse()

LOC

Here is a sample LOC file with some data:

<loc version='1.0'>
  <waypoint>
    <name id='GC54AMF'><![CDATA[Mortsel]]></name>
    <coord lat='51.16215' lon='4.456933'/>
    <type>Geocache</type>
    <link text='Details'>http://www.geocaching.com</link>
  </waypoint>
</loc>

The only thing you have to do is make sure to get the contents of the LOC file into an Data structure. When you have this you can easily parse the file into a File.

let content: String = '...'
let data = content.data(using: .utf8)
let file = try! TrackParser(data: data, type: .loc).parse()

NMEA

Here is a sample NMEA file with some data:

$GPRMC,134732.000,A,5540.3244,N,01231.2941,E,1.75,90.16,041112,,,A*5E
$GPRMC,134735.000,A,5540.3232,N,01231.2946,E,1.97,88.98,041112,,,A*5C
$GPWPL,5540.2823,N,01231.1182,E,00001*7E

The only thing you have to do is make sure to get the contents of the NMEA file into an Data structure. When you have this you can easily parse the file into a File.

let content: String = '...'
let data = content.data(using: .utf8)
let file = try! TrackParser(data: data, type: .nmea).parse()

TCX

Here is a sample TCX file with some data:

<TrainingCenterDatabase xmlns='http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2'>
    <Courses>
        <Course>
            <Name>Jelle Vandebeeck</Name>
            <Lap>
                <TotalTimeSeconds>60</TotalTimeSeconds>
                <DistanceMeters>1200</DistanceMeters>
                <BeginPosition>
                    <LatitudeDegrees>51.208845321089</LatitudeDegrees>
                    <LongitudeDegrees>4.394159177318</LongitudeDegrees>
                </BeginPosition>
                <EndPosition>
                    <LatitudeDegrees>51.208867281675</LatitudeDegrees>
                    <LongitudeDegrees>4.394087595865</LongitudeDegrees>
                </EndPosition>
                <Intensity>Active</Intensity>
            </Lap>
            <Track>
                <TrackPoint>
                    <Position>
                        <LatitudeDegrees>51.208845321089</LatitudeDegrees>
                        <LongitudeDegrees>4.394159177318</LongitudeDegrees>
                    </Position>
                </TrackPoint>
            </Track>
        </Course>
    </Courses>
</TrainingCenterDatabase>

The only thing you have to do is make sure to get the contents of the TCX file into an Data structure. When you have this you can easily parse the file into a File.

let content: String = '...'
let data = content.data(using: .utf8)
let file = try! TrackParser(data: data, type: .tcx).parse()

Type Handling

There is also an automated way to handle the type selection. Just pass the file extension to the TrackType enum.

let gpxType = TrackType(fileExtension: 'gpx')
let locType = TrackType(fileExtension: 'loc')
let tcxType = TrackType(fileExtension: 'tcx')

The fileExtension value that is passed ignores the case.

Error Handling

When the parsing fails an error will be thrown. There are currently two types of errors:

• invalidData thrown when the data object is empty.
• invalidFormat thrown when the data object can't be parsed.
• invalidVersion thrown when the data object contains an incorrect version of the file.

Updating the FIT framework

1. Make the changes to the Fit/Fit.xcodeproj.
2. Build the Fit macOS scheme.
3. Build the Fit Universal iOS scheme.
4. Done.

License

TrackKit is available under the MIT license. See the LICENSE file for more info.