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import CoreGraphics
import Foundation
let vertexPattern =
"([^\\(]+?)[\\s]*\\([\\s]*([0-9]+.?[0-9]*)[\\s]*,[\\s]*([0-9]+.?[0-9]*)[\\s]*\\)"
let edgePattern = "(.+?)[\\s]*-([->])[\\s]*(.+)"
let blockerPattern = "\\[Blocker\\][\\s]*(.+)"
let opportunityPattern = "\\[Opportunity\\][\\s]*(.+)[\\s]+([-+])[\\s]*([0-9]+.?[0-9]*)"
let stagePattern = "\\[(I{1,3})\\][\\s]*([0-9]+.?[0-9]*)"
struct ParsedMap {
let vertices: [Vertex]
let edges: [MapEdge]
let blockers: [Blocker]
let opportunities: [Opportunity]
let stages: [CGFloat]
}
struct Vertex {
let id: Int
let label: String
let position: CGPoint
}
struct MapEdge {
let id: Int
let origin: CGPoint
let destination: CGPoint
let arrowhead: Bool
}
struct Blocker {
let id: Int
let position: CGPoint
}
struct Opportunity {
let id: Int
let origin: CGPoint
let destination: CGPoint
}
let defaultDimensions: [CGFloat] = [
25.0,
50.0,
75.0,
]
// Extracts the vertices from the text
func parseVertices(_ text: String) -> [String: CGPoint] {
var result: [String: CGPoint] = [:]
let regex = try! NSRegularExpression(pattern: vertexPattern, options: .caseInsensitive)
let lines = text.split(whereSeparator: \.isNewline)
for line in lines {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
if matches.count > 0 && matches[0].numberOfRanges == 4 {
let match = matches[0]
let key = String(line[Range(match.range(at: 1), in: line)!])
let xString = String(line[Range(match.range(at: 2), in: line)!])
let yString = String(line[Range(match.range(at: 3), in: line)!])
let x = CGFloat(truncating: NumberFormatter().number(from: xString) ?? 0.0)
let y = CGFloat(truncating: NumberFormatter().number(from: yString) ?? 0.0)
let point = CGPoint(x: x, y: y)
result[key] = point
}
}
return result
}
func parseEdges(_ text: String, vertices: [String: CGPoint]) -> [MapEdge] {
var result: [MapEdge] = []
let regex = try! NSRegularExpression(pattern: edgePattern, options: .caseInsensitive)
let lines = text.split(whereSeparator: \.isNewline)
for (index, line) in lines.enumerated() {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
if matches.count > 0 && matches[0].numberOfRanges == 4 {
let match = matches[0]
let arrowhead = String(line[Range(match.range(at: 2), in: line)!]) == ">"
let vertexA = String(line[Range(match.range(at: 1), in: line)!])
let vertexB = String(line[Range(match.range(at: 3), in: line)!])
if let origin = vertices[vertexA] {
if let destination = vertices[vertexB] {
result.append(
MapEdge(id: index, origin: origin, destination: destination, arrowhead: arrowhead))
}
}
}
}
return result
}
func parseOpportunities(_ text: String, vertices: [String: CGPoint]) -> [Opportunity] {
var result: [Opportunity] = []
let regex = try! NSRegularExpression(pattern: opportunityPattern, options: .caseInsensitive)
let lines = text.split(whereSeparator: \.isNewline)
for (index, line) in lines.enumerated() {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
if matches.count > 0 && matches[0].numberOfRanges == 4 {
let match = matches[0]
let multiplier = CGFloat(
String(line[Range(match.range(at: 2), in: line)!]) == "-" ? -1.0 : 1.0)
let vertex = String(line[Range(match.range(at: 1), in: line)!])
let opportunityString = String(line[Range(match.range(at: 3), in: line)!])
let opportunity = CGFloat(
truncating: NumberFormatter().number(from: opportunityString) ?? 0.0)
if let origin = vertices[vertex] {
let destination = CGPoint(x: origin.x + opportunity * multiplier, y: origin.y)
result.append(Opportunity(id: index, origin: origin, destination: destination))
}
}
}
return result
}
func parseBlockers(_ text: String, vertices: [String: CGPoint]) -> [Blocker] {
var result: [Blocker] = []
let regex = try! NSRegularExpression(pattern: blockerPattern, options: .caseInsensitive)
let lines = text.split(whereSeparator: \.isNewline)
for (index, line) in lines.enumerated() {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
if matches.count > 0 && matches[0].numberOfRanges == 2 {
let match = matches[0]
let vertexA = String(line[Range(match.range(at: 1), in: line)!])
if let position = vertices[vertexA] {
result.append(Blocker(id: index, position: position))
}
}
}
return result
}
func parseStages(_ text: String) -> [CGFloat] {
var result = defaultDimensions
let regex = try! NSRegularExpression(pattern: stagePattern, options: .caseInsensitive)
let lines = text.split(whereSeparator: \.isNewline)
for line in lines {
let range = NSRange(location: 0, length: line.utf16.count)
let matches = regex.matches(in: String(line), options: [], range: range)
if matches.count > 0 && matches[0].numberOfRanges == 3 {
let match = matches[0]
let stage = String(line[Range(match.range(at: 1), in: line)!])
let dimensionsString = String(line[Range(match.range(at: 2), in: line)!])
let dimensions = CGFloat(truncating: NumberFormatter().number(from: dimensionsString) ?? 0.0)
result[stage.count - 1] = dimensions
}
}
return result
}
// Converts vetex dictionary to array
func mapVertices(_ vertices: [String: CGPoint]) -> [Vertex] {
var i = 0
return vertices.map { label, position in
i += 1
return Vertex(id: i, label: label, position: position)
}
}
extension Map {
func parse() -> ParsedMap {
let text = self.content ?? ""
let vertices = parseVertices(text)
let mappedVertices = mapVertices(vertices)
let edges = parseEdges(text, vertices: vertices)
let blockers = parseBlockers(text, vertices: vertices)
let opportunities = parseOpportunities(text, vertices: vertices)
let stages = parseStages(text)
return ParsedMap(
vertices: mappedVertices, edges: edges, blockers: blockers, opportunities: opportunities,
stages: stages)
}
}
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