Created
March 25, 2018 17:15
-
-
Save cscouto/049903d80c067239596c526525cd03c2 to your computer and use it in GitHub Desktop.
SWIFT - CSV Mappper
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// | |
// CsvMapper.swift | |
// | |
// Created by Tiago Do Couto on 3/25/18. | |
// Copyright © 2018 CoutoCode. All rights reserved. | |
// | |
import Foundation | |
open class CsvMapper { | |
open var headers: [String] = [] | |
open var rows: [Dictionary<String, String>] = [] | |
open var columns = Dictionary<String, [String]>() | |
var delimiter = CharacterSet(charactersIn: ",") | |
public init(content: String?, delimiter: CharacterSet, encoding: UInt) throws{ | |
if let csvStringToParse = content{ | |
self.delimiter = delimiter | |
let newline = CharacterSet.newlines | |
var lines: [String] = [] | |
csvStringToParse.trimmingCharacters(in: newline).enumerateLines { line, stop in lines.append(line) } | |
self.headers = self.parseHeaders(fromLines: lines) | |
self.rows = self.parseRows(fromLines: lines) | |
self.columns = self.parseColumns(fromLines: lines) | |
} | |
} | |
public convenience init(contentsOfURL url: String) throws { | |
let comma = CharacterSet(charactersIn: ",") | |
let csvString: String? | |
do { | |
csvString = try String(contentsOfFile: url, encoding: String.Encoding.utf8) | |
} catch _ { | |
csvString = nil | |
}; | |
try self.init(content: csvString,delimiter:comma, encoding:String.Encoding.utf8.rawValue) | |
} | |
func parseHeaders(fromLines lines: [String]) -> [String] { | |
return lines[0].components(separatedBy: self.delimiter) | |
} | |
func parseRows(fromLines lines: [String]) -> [Dictionary<String, String>] { | |
var rows: [Dictionary<String, String>] = [] | |
for (lineNumber, line) in lines.enumerated() { | |
if lineNumber == 0 { | |
continue | |
} | |
var row = Dictionary<String, String>() | |
let values = line.components(separatedBy: self.delimiter) | |
for (index, header) in self.headers.enumerated() { | |
if index < values.count { | |
row[header] = values[index] | |
} else { | |
row[header] = "" | |
} | |
} | |
rows.append(row) | |
} | |
return rows | |
} | |
func parseColumns(fromLines lines: [String]) -> Dictionary<String, [String]> { | |
var columns = Dictionary<String, [String]>() | |
for header in self.headers { | |
let column = self.rows.map { row in row[header] != nil ? row[header]! : "" } | |
columns[header] = column | |
} | |
return columns | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment