[5ec3a0b] | 1 | import re |
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[d1c4782] | 2 | import os |
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| 3 | import logging |
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[9ab0fe3] | 4 | import calendar |
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[d6f8304] | 5 | import shutil |
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| 6 | import time |
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[2f8a48f] | 7 | from datetime import datetime, timedelta |
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[53bb3e5] | 8 | from decimal import Decimal |
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| 9 | from shutil import copyfileobj |
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| 10 | |
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[5ec3a0b] | 11 | from unidecode import unidecode |
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| 12 | from xml.dom import minidom |
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[53bb3e5] | 13 | from ZODB.blob import Blob |
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[d6f8304] | 14 | from splinter import Browser |
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| 15 | |
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[5ec3a0b] | 16 | |
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[d1c4782] | 17 | log = logging.getLogger(__name__) |
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| 18 | |
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[5ec3a0b] | 19 | |
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| 20 | def slugify(text, delim=u'-'): |
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| 21 | """ |
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| 22 | Generates an ASCII-only slug. |
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| 23 | from http://flask.pocoo.org/snippets/5/ |
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| 24 | """ |
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| 25 | _punct_re = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+') |
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| 26 | result = [] |
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| 27 | text = unidecode(text) |
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| 28 | for word in _punct_re.split(text.lower()): |
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| 29 | result.extend(word.split()) |
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| 30 | return delim.join(result) |
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| 31 | |
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| 32 | |
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| 33 | class GPXMinidomParser(object): |
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| 34 | """ |
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| 35 | GPX parser, using minidom from the base library. |
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| 36 | |
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| 37 | We need this as a workaround, as gpxpy does not handle GPX 1.1 extensions |
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| 38 | correctly right now (and we have not been able to fix it). |
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| 39 | |
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| 40 | This method is inspired by this blog post: |
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| 41 | |
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| 42 | http://castfortwo.blogspot.com.au/2014/06/ |
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| 43 | parsing-strava-gpx-file-with-python.html |
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| 44 | """ |
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| 45 | |
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| 46 | def __init__(self, gpx_path): |
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| 47 | self.gpx_path = gpx_path |
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| 48 | self.gpx = None |
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| 49 | self.tracks = {} |
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| 50 | |
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| 51 | def load_gpx(self): |
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| 52 | """ |
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| 53 | Load the given gpx file into a minidom doc, normalize it and set |
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| 54 | self.gpx to the document root so we can reuse it later on |
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| 55 | """ |
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| 56 | doc = minidom.parse(self.gpx_path) |
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| 57 | doc.normalize() |
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| 58 | self.gpx = doc.documentElement |
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| 59 | |
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| 60 | def parse_tracks(self): |
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| 61 | """ |
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| 62 | Loop over all the tracks found in the gpx, parsing them |
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| 63 | """ |
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| 64 | for trk in self.gpx.getElementsByTagName('trk'): |
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| 65 | self.parse_track(trk) |
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| 66 | |
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| 67 | def parse_track(self, trk): |
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| 68 | """ |
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| 69 | Parse the given track, extracting all the information and putting it |
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| 70 | into a dict where the key is the track name and the value is a list |
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| 71 | of data for the the different segments and points in the track. |
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| 72 | |
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| 73 | All the data is saved in self.tracks |
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| 74 | """ |
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| 75 | name = trk.getElementsByTagName('name')[0].firstChild.data |
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| 76 | if name not in self.tracks: |
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| 77 | self.tracks[name] = [] |
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| 78 | |
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| 79 | for trkseg in trk.getElementsByTagName('trkseg'): |
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| 80 | for trkpt in trkseg.getElementsByTagName('trkpt'): |
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| 81 | lat = Decimal(trkpt.getAttribute('lat')) |
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| 82 | lon = Decimal(trkpt.getAttribute('lon')) |
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| 83 | |
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| 84 | # There could happen there is no elevation data |
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| 85 | ele = trkpt.getElementsByTagName('ele') |
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| 86 | if ele: |
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| 87 | ele = Decimal(ele[0].firstChild.data) |
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| 88 | else: |
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| 89 | ele = None |
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| 90 | |
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| 91 | rfc3339 = trkpt.getElementsByTagName('time')[0].firstChild.data |
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| 92 | try: |
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[53bb3e5] | 93 | t = datetime.strptime( |
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[5ec3a0b] | 94 | rfc3339, '%Y-%m-%dT%H:%M:%S.%fZ') |
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| 95 | except ValueError: |
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[53bb3e5] | 96 | t = datetime.strptime( |
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[5ec3a0b] | 97 | rfc3339, '%Y-%m-%dT%H:%M:%SZ') |
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| 98 | |
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| 99 | hr = None |
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| 100 | cad = None |
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| 101 | atemp = None |
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| 102 | extensions = trkpt.getElementsByTagName('extensions') |
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| 103 | if extensions: |
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| 104 | extensions = extensions[0] |
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| 105 | trkPtExt = extensions.getElementsByTagName( |
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| 106 | 'gpxtpx:TrackPointExtension')[0] |
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| 107 | if trkPtExt: |
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| 108 | hr_ext = trkPtExt.getElementsByTagName('gpxtpx:hr') |
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| 109 | cad_ext = trkPtExt.getElementsByTagName('gpxtpx:cad') |
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| 110 | atemp_ext = trkPtExt.getElementsByTagName( |
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| 111 | 'gpxtpx:atemp') |
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| 112 | if hr_ext: |
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| 113 | hr = Decimal(hr_ext[0].firstChild.data) |
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| 114 | if cad_ext: |
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| 115 | cad = Decimal(cad_ext[0].firstChild.data) |
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| 116 | if atemp_ext: |
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| 117 | atemp = Decimal(atemp_ext[0].firstChild.data) |
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| 118 | |
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| 119 | self.tracks[name].append({ |
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| 120 | 'lat': lat, |
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| 121 | 'lon': lon, |
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| 122 | 'ele': ele, |
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| 123 | 'time': t, |
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| 124 | 'hr': hr, |
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| 125 | 'cad': cad, |
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| 126 | 'atemp': atemp}) |
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[53bb3e5] | 127 | |
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| 128 | |
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| 129 | def semicircles_to_degrees(semicircles): |
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| 130 | return semicircles * (180 / pow(2, 31)) |
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| 131 | |
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| 132 | |
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| 133 | def degrees_to_semicircles(degrees): |
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| 134 | return degrees * (pow(2, 31) / 180) |
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| 135 | |
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| 136 | |
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| 137 | def miles_to_kms(miles): |
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| 138 | factor = 0.62137119 |
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| 139 | return miles / factor |
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| 140 | |
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| 141 | |
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| 142 | def kms_to_miles(kms): |
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| 143 | factor = 0.62137119 |
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| 144 | return kms * factor |
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| 145 | |
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| 146 | |
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| 147 | def meters_to_kms(meters): |
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| 148 | return meters / 1000 |
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| 149 | |
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| 150 | |
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| 151 | def kms_to_meters(kms): |
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| 152 | return kms * 1000 |
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| 153 | |
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| 154 | |
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| 155 | def mps_to_kmph(mps): |
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| 156 | """ |
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| 157 | Transform a value from meters-per-second to kilometers-per-hour |
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| 158 | """ |
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| 159 | return mps * 3.6 |
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| 160 | |
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| 161 | |
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| 162 | def kmph_to_mps(kmph): |
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| 163 | """ |
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| 164 | Transform a value from kilometers-per-hour to meters-per-second |
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| 165 | """ |
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| 166 | return kmph * 0.277778 |
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| 167 | |
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| 168 | |
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| 169 | def copy_blob(blob): |
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| 170 | """ |
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| 171 | Create a copy of a blob object, returning another blob object that is |
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| 172 | the copy of the given blob file. |
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| 173 | """ |
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| 174 | new_blob = Blob() |
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| 175 | if getattr(blob, 'file_extension', None): |
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| 176 | new_blob.file_extension = blob.file_extension |
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| 177 | with blob.open('r') as orig_blob, new_blob.open('w') as dest_blob: |
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| 178 | orig_blob.seek(0) |
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| 179 | copyfileobj(orig_blob, dest_blob) |
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| 180 | return new_blob |
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| 181 | |
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| 182 | |
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[119412d] | 183 | def create_blob(data, file_extension, binary=False): |
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[53bb3e5] | 184 | """ |
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| 185 | Create a ZODB blob file from some data, return the blob object |
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| 186 | """ |
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| 187 | blob = Blob() |
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| 188 | blob.file_extension = file_extension |
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| 189 | with blob.open('w') as open_blob: |
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| 190 | # use .encode() to convert the string to bytes if needed |
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[119412d] | 191 | if not binary and not isinstance(data, bytes): |
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[53bb3e5] | 192 | data = data.encode('utf-8') |
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| 193 | open_blob.write(data) |
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| 194 | return blob |
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[d1c4782] | 195 | |
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| 196 | |
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[d6f8304] | 197 | def save_map_screenshot(workout, request): |
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| 198 | |
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[d1c4782] | 199 | if workout.has_gpx: |
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| 200 | |
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[d6f8304] | 201 | map_url = request.resource_url(workout, 'map') |
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| 202 | |
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| 203 | browser = Browser('chrome', headless=True) |
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| 204 | browser.driver.set_window_size(1300, 436) |
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| 205 | |
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| 206 | browser.visit(map_url) |
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| 207 | # we need to wait a moment before taking the screenshot, to ensure |
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| 208 | # all tiles are loaded in the map. |
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| 209 | time.sleep(5) |
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| 210 | |
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| 211 | # splinter saves the screenshot with a random name (even if we do |
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| 212 | # provide a name) so we get the path to that file and later on we |
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| 213 | # move it to the proper place |
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| 214 | splinter_screenshot_path = browser.screenshot() |
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| 215 | |
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| 216 | current_path = os.path.abspath(os.path.dirname(__file__)) |
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[d1c4782] | 217 | screenshots_path = os.path.join( |
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| 218 | current_path, 'static/maps', str(workout.owner.uid)) |
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| 219 | if not os.path.exists(screenshots_path): |
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| 220 | os.makedirs(screenshots_path) |
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| 221 | |
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| 222 | screenshot_path = os.path.join( |
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| 223 | screenshots_path, str(workout.workout_id)) |
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| 224 | screenshot_path += '.png' |
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| 225 | |
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[d6f8304] | 226 | shutil.move(splinter_screenshot_path, screenshot_path) |
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[02aee97] | 227 | os.chmod(screenshot_path, 0o644) |
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[d1c4782] | 228 | return True |
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| 229 | |
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| 230 | return False |
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[2f8a48f] | 231 | |
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| 232 | |
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| 233 | def timedelta_to_hms(value): |
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| 234 | """ |
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| 235 | Return hours, minutes, seconds from a timedelta object |
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| 236 | """ |
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| 237 | hours, remainder = divmod(int(value.total_seconds()), 3600) |
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| 238 | minutes, seconds = divmod(remainder, 60) |
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| 239 | return hours, minutes, seconds |
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| 240 | |
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| 241 | |
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| 242 | def get_week_days(day, start_day=1): |
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| 243 | """ |
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| 244 | Return a list of datetime objects for the days of the week "day" is in. |
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| 245 | |
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| 246 | day is a datetime object (like in datetime.now() for "today") |
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| 247 | |
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| 248 | start_day can be used to set if week starts on monday (1) or sunday (0) |
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| 249 | """ |
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| 250 | first_day = day - timedelta(days=day.isoweekday() - start_day) |
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| 251 | week_days = [first_day + timedelta(days=i) for i in range(7)] |
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| 252 | return week_days |
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[9ab0fe3] | 253 | |
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| 254 | |
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| 255 | def get_month_week_number(day): |
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| 256 | """ |
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| 257 | Given a datetime object (day), return the number of week the day is |
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| 258 | in the current month (week 1, 2, 3, etc) |
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| 259 | """ |
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| 260 | weeks = calendar.monthcalendar(day.year, day.month) |
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| 261 | for week in weeks: |
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| 262 | if day.day in week: |
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| 263 | return weeks.index(week) |
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| 264 | return None |
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