Created
April 28, 2015 17:17
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*.tes parser
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| # The ".tes" format is a binary file without the header (16bytes/record). | |
| # It only the data part of the ".tk2" format. | |
| # | |
| # Byte (DataType): Content ============================= | |
| # 00-01 (Word): Flag (bp0:Split mark, bp1:Intererst Point, bp2:Track point) | |
| # 02-05 (LongInt): DateTime | |
| # (bp0-5:Sec, bp6-11:Min, bp12-16:Hour, bp17-21:Day, | |
| # bp22-25:Month, bp26-31:Year-2000) | |
| # 06-09 (LongInt): Latitude / 1.0e7 (Deg) | |
| # 0A-0D (LongInt): Longitude / 1.0e7 (Deg) | |
| # 0E-0F(SmallInt): Altitude(m) | |
| class TESParser < TrackParser | |
| def parse(index = 0) | |
| track_points = [] | |
| unpacked_string = @track_data.unpack('SLLLS' * (@track_data.length / 16)) | |
| (0..(unpacked_string.count / 5 - 1)).each do |x| | |
| track_points << TrackPoint.new({ | |
| latitude: unpacked_string[x * 5 + 2] / 1.0e7, | |
| longitude: unpacked_string[x * 5 + 3] / 1.0e7, | |
| elevation: unpacked_string[x * 5 + 4], | |
| point_created_at: parse_datetime(unpacked_string[x * 5 + 1]) | |
| }) | |
| end | |
| track_points | |
| end | |
| private | |
| def parse_datetime(val) | |
| binarydate = val.to_s(2).reverse | |
| year = "20#{binarydate[26..31].reverse.to_i(2).to_s}" | |
| month = binarydate[22..25].reverse.to_i(2) | |
| month = month < 10 ? "0#{month}" : month.to_s | |
| day = binarydate[17..21].reverse.to_i(2).to_s | |
| hour = binarydate[12..16].reverse.to_i(2).to_s | |
| min = binarydate[6..11].reverse.to_i(2).to_s | |
| sec = binarydate[0..5].reverse.to_i(2).to_s | |
| Time.parse("#{year}-#{month}-#{day}T#{hour}:#{min}:#{sec}") | |
| end | |
| end |
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