CSV reading and writing library written in Swift.
import CSV
let csvString = "1,foo\n2,bar"
let csv = try! CSVReader(string: csvString)
while let row = csv.next() {
print("\(row)")
}
// => ["1", "foo"]
// => ["2", "bar"]NOTE: The default character encoding is UTF8.
import Foundation
import CSV
let stream = InputStream(fileAtPath: "/path/to/file.csv")!
let csv = try! CSVReader(stream: stream)
while let row = csv.next() {
print("\(row)")
}import CSV
let csvString = "id,name\n1,foo\n2,bar"
let csv = try! CSVReader(string: csvString,
hasHeaderRow: true) // It must be true.
let headerRow = csv.headerRow!
print("\(headerRow)") // => ["id", "name"]
while let row = csv.next() {
print("\(row)")
}
// => ["1", "foo"]
// => ["2", "bar"]import CSV
let csvString = "id,name\n1,foo"
let csv = try! CSVReader(string: csvString,
hasHeaderRow: true) // It must be true.
while csv.next() != nil {
print("\(csv["id"]!)") // => "1"
print("\(csv["name"]!)") // => "foo"
}If you use a file path, you can provide the character encoding to initializer.
import Foundation
import CSV
let stream = InputStream(fileAtPath: "/path/to/file.csv")!
let csv = try! CSVReader(stream: stream,
codecType: UTF16.self,
endian: .big)If you have a destination object that conforms to the Decodable protocol, you can serialize a row with a new instances of the object.
struct DecodableExample: Decodable {
let intKey: Int
let stringKey: String
let optionalStringKey: String?
}
let csv = """
intKey,stringKey,optionalStringKey
1234,abcd,
"""
var records = [DecodableExample]()
do {
let reader = try CSVReader(string: csv, hasHeaderRow: true)
let decoder = CSVRowDecoder()
while reader.next() != nil {
let row = try decoder.decode(DecodableExample.self, from: reader)
records.append(row)
}
} catch {
// Invalid row format
}NOTE: The default character encoding is UTF8.
import Foundation
import CSV
let csv = try! CSVWriter(stream: .toMemory())
// Write a row
try! csv.write(row: ["id", "name"])
// Write fields separately
csv.beginNewRow()
try! csv.write(field: "1")
try! csv.write(field: "foo")
csv.beginNewRow()
try! csv.write(field: "2")
try! csv.write(field: "bar")
csv.stream.close()
// Get a String
let csvData = csv.stream.property(forKey: .dataWrittenToMemoryStreamKey) as! Data
let csvString = String(data: csvData, encoding: .utf8)!
print(csvString)
// => "id,name\n1,foo\n2,bar"NOTE: The default character encoding is UTF8.
import Foundation
import CSV
let stream = OutputStream(toFileAtPath: "/path/to/file.csv", append: false)!
let csv = try! CSVWriter(stream: stream)
try! csv.write(row: ["id", "name"])
try! csv.write(row: ["1", "foo"])
try! csv.write(row: ["1", "bar"])
csv.stream.close()Add the dependency to your Package.swift. For example:
// swift-tools-version: 5.9
import PackageDescription
let package = Package(
name: "MyPackage",
dependencies: [
// Add `CSV.swift` package here.
.package(url: "https://github.com/yaslab/CSV.swift.git", from: "2.5.0")
],
targets: [
.executableTarget(
name: "MyCommand",
dependencies: [
// Then add it to your module's dependencies.
.product(name: "CSV", package: "CSV.swift")
]
)
]
)pod 'CSV.swift', '~> 2.5.0'CSV.swift is released under the MIT license. See the LICENSE file for more info.
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