git.r.bdr.sh - rbdr/map/blob - Map/Logic/MapParser/Strategies/OpportunityParserStrategy.swift

   1 /*
   2  Copyright (C) 2024 Rubén Beltrán del Río
   3
   4  This program is free software: you can redistribute it and/or modify
   5  it under the terms of the GNU General Public License as published by
   6  the Free Software Foundation, either version 3 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU General Public License for more details.
  13
  14  You should have received a copy of the GNU General Public License
  15  along with this program. If not, see https://map.tranquil.systems.
  16  */
  17 import Foundation
  18
  19 struct OpportunityParserStrategy: MapParserStrategy {
  20   private let regex = MapParsingPatterns.opportunity
  21
  22   func canHandle(line: String) -> Bool {
  23     let range = NSRange(location: 0, length: line.utf16.count)
  24     let matches = regex.matches(in: String(line), options: [], range: range)
  25     return matches.count > 0 && matches[0].numberOfRanges == 5
  26   }
  27
  28   func handle(index: Int, line: String, vertices: [String: Vertex]) -> (Any.Type, Any) {
  29     let range = NSRange(location: 0, length: line.utf16.count)
  30     let matches = regex.matches(in: String(line), options: [], range: range)
  31
  32     let match = matches[0]
  33     let multiplier = CGFloat(
  34       String(line[Range(match.range(at: 3), in: line)!]) == "-" ? -1.0 : 1.0)
  35     let vertex = String(line[Range(match.range(at: 2), in: line)!])
  36     let opportunityString = String(line[Range(match.range(at: 4), in: line)!])
  37     let opportunity = CGFloat(
  38       truncating: NumberFormatter().number(from: opportunityString) ?? 0.0)
  39
  40     if let origin = vertices[vertex] {
  41       let destination = CGPoint(
  42         x: origin.position.x + opportunity * multiplier, y: origin.position.y)
  43       let opportunity = Opportunity(id: index, origin: origin.position, destination: destination)
  44       return (Opportunity.self, opportunity)
  45     }
  46
  47     return (NSObject.self, NSObject())  // No matching object
  48   }
  49 }