Module: GitFit::SportMapper

Defined in:
lib/git_fit/sport_mapper.rb

Constant Summary collapse

ALIASES = 
{
  'running' => 'run', 'trailrun' => 'run', 'trail_run' => 'run',
  'virtualrun' => 'run', 'virtual_run' => 'run',
  'indoorrun' => 'run', 'indoor_run' => 'run',
  'cycling' => 'ride', 'biking' => 'ride',
  'mountainbike' => 'ride', 'gravelride' => 'ride', 'ebikeride' => 'ride',
  'virtualride' => 'ride', 'virtual_ride' => 'ride',
  'indoor_ride' => 'ride', 'indoorride' => 'ride',
  'hiking' => 'hike',
  'walking' => 'walk',
  'swimming' => 'swim',
  'skiing' => 'ski', 'backcountryski' => 'ski', 'nordicski' => 'ski',
  'strengthtraining' => 'workout'
}.freeze
KEYWORDS = 
[
  [/\b(?:run|jog|sprint|marathon)\w*\b/i, 'run'],
  [/\b(?:ride|cycl|bike|mountain\.?bike|gravel|ebike)\w*\b/i, 'ride'],
  [/\b(?:hike|climb|mountaineer|trek)\w*\b/i, 'hike'],
  [/\b(?:walk|stroll)\w*\b/i, 'walk'],
  [/\b(?:swim|pool|laps?)\w*\b/i, 'swim'],
  [/\b(?:ski|snowboard|nordic)\w*\b/i, 'ski'],
  [/\b(?:workout|train|gym|fitness|yoga|pilates|crossfit|elliptical|strength)\w*\b/i, 'workout']
].freeze
LEV_REFERENCES = 
%w[
  running run trailrun trail_run virtualrun virtual_run indoorrun indoor_run
  cycling ride biking mountainbike gravelride ebikeride
  virtualride virtual_ride indoor_ride indoorride
  hiking hike walking walk swimming swim skiing ski
  workout strengthtraining training elliptical cardio functional
].freeze
LEV_THRESHOLD = 
3

Class Method Summary collapse

Class Method Details

.canonicalize(str) ⇒ Object 



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# File 'lib/git_fit/sport_mapper.rb', line 40

def self.canonicalize(str)
  return 'other' if str.nil? || str.empty?
  key = str.to_s.downcase.strip
  return ALIASES[key] if ALIASES.key?(key)
  KEYWORDS.each { |regex, sport| return sport if regex.match?(str) }
  best = lev_match(key)
  return best if best
  'other'
end

.lev_match(str) ⇒ Object 



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# File 'lib/git_fit/sport_mapper.rb', line 50

def self.lev_match(str)
  best = nil
  best_dist = Float::INFINITY
  LEV_REFERENCES.each do |ref|
    dist = levenshtein(str, ref)
    if dist < best_dist
      best_dist = dist
      best = ref
    end
  end
  return nil if best_dist > LEV_THRESHOLD
  ALIASES[best] || best
end

.levenshtein(a, b) ⇒ Object 



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# File 'lib/git_fit/sport_mapper.rb', line 64

def self.levenshtein(a, b)
  n, m = a.length, b.length
  return m if n == 0
  return n if m == 0
  cur = (0..m).to_a
  (1..n).each do |i|
    prev = cur[0]
    cur[0] = i
    (1..m).each do |j|
      tmp = cur[j]
      cost = a[i - 1] == b[j - 1] ? 0 : 1
      cur[j] = [cur[j] + 1, cur[j - 1] + 1, prev + cost].min
      prev = tmp
    end
  end
  cur[m]
end