Adds TLE collection parser, rm IDE directories

.gitignore

@@ -86,3 +86,5 @@ fastlane/test_output
 
 iOSInjectionProject/
 Package.resolved
+.idea
+.swiftpm

Sources/SGPKit/Array+chunked.swift

@@ -0,0 +1,14 @@
+//
+// Array+chunked.swift
+// 
+//
+// Created by p on 5/4/23.
+//
+
+extension Array {
+ func chunked(into size: Int) -> [[Element]] {
+ return stride(from: 0, to: count, by: size).map {
+ Array(self[$0 ..< Swift.min($0 + size, count)])
+ }
+ }
+}

Sources/SGPKit/TLEParser.swift

@@ -25,7 +25,7 @@
 import Foundation
 
 /// A TLE parser
-public final class TLEParser {
+public struct TLEParser {
 
  /// Describes all the possible errors that can be thrown while parsing
  public enum Error: Swift.Error {
@@ -48,7 +48,7 @@ public final class TLEParser {
  /// - Parameter data: the buffer to parse
  /// - Returns: a TLE model
  /// - Throws: TLEParser.Error
- public func parse(_ data: Data) throws -> TLE {
+ static public func parse(_ data: Data) throws -> TLE {
  guard !data.isEmpty else {
  throw Error.empty
  }
@@ -58,9 +58,9 @@ public final class TLEParser {
  }
 
  let lines = string
- .trimmingCharacters(in: .newlines)
- .split(separator: "\n")
- .map({ String($0) })
+ .split(whereSeparator: { $0.isNewline })
+ .map({ String($0).trimmingCharacters(in: .whitespacesAndNewlines) })
+ .filter { $0.count > 0 }
 
  guard lines.count == 3 else {
  throw Error.wrongLineCount(lines.count)
@@ -78,4 +78,22 @@ public final class TLEParser {
  secondLine: lines[2]
  )
  }
+
+ static public func parseCollection(_ data: Data, encoding: String.Encoding = .ascii) throws -> [TLE] {
+ guard !data.isEmpty else { throw Error.empty }
+ guard let dataString = String(data: data, encoding: encoding) else {
+ throw Error.encodingError
+ }
+
+ let lines = dataString
+ .split(whereSeparator: { $0.isNewline })
+ .map({ String($0).trimmingCharacters(in: .whitespacesAndNewlines) })
+ .filter { $0.count > 0 }
+
+ if lines.count % 3 != 0 { throw Error.invalidLineLength }
+
+ let elements = lines.chunked(into: 3)
+ let tles = elements.map({ TLE(title: $0[0], firstLine: $0[1], secondLine: $0[2]) })
+ return tles
+ }
 }

Tests/SGPKitTests/TLEParserTests.swift

@@ -34,16 +34,14 @@ final class TLEParserTests: QuickSpec {
  context("when parsing an empty buffer") {
  it("should throw an exception") {
  let emptyBuffer = Data()
- let parser = TLEParser()
 
- expect { try parser.parse(emptyBuffer) }.to(throwError(TLEParser.Error.empty))
+ expect { try TLEParser.parse(emptyBuffer) }.to(throwError(TLEParser.Error.empty))
  }
  }
 
  context("when parsing a not empty buffer") {
  context("if the buffer contains valid data") {
  it("should return a TLE model") {
- let parser = TLEParser()
  let validData = self.loadValidTLEData()
 
  let expectedTLE = TLE(
@@ -53,7 +51,7 @@ final class TLEParserTests: QuickSpec {
  )
 
  do {
- let tle = try parser.parse(validData)
+ let tle = try TLEParser.parse(validData)
  expect(tle.title).to(equal(expectedTLE.title))
  expect(tle.firstLine).to(equal(expectedTLE.firstLine))
  expect(tle.secondLine).to(equal(expectedTLE.secondLine))
@@ -65,11 +63,10 @@ final class TLEParserTests: QuickSpec {
 
  context("if the encoded TLE doesn't have 3 lines") {
  it("should raise an exception") {
- let parser = TLEParser()
  let invalidData = self.loadOneLineTLEData()
 
  do {
- _ = try parser.parse(invalidData)
+ _ = try TLEParser.parse(invalidData)
  fail()
  } catch let tleParserError as TLEParser.Error {
  if case let TLEParser.Error.wrongLineCount(count) = tleParserError {
@@ -85,11 +82,10 @@ final class TLEParserTests: QuickSpec {
 
  context("if not all the lines of the TLE have 69 characters") {
  it("should raise an exception") {
- let parser = TLEParser()
  let invalidData = self.loadInvalidLineLengthTLEData()
 
  do {
- _ = try parser.parse(invalidData)
+ _ = try TLEParser.parse(invalidData)
  fail()
  } catch let tleParserError as TLEParser.Error {
  if case TLEParser.Error.invalidLineLength = tleParserError {