A simple logging package for Swift

by iOS Example

OhMyLog

OhMyLog is a simple logging package for Swift. It supports the following features:

  • Six logging levels (?, ?, ?, ⚠️, ?, ?)
  • Display log context including filename and line number

Install?

You package file would be like:

let package = Package(
    name: "YourPackageName",
    
    dependencies: [
        .package(url: "https://github.com/forkercat/OhMyLog.git", .branch("main")),
    ],
    
    targets: [
        .executableTarget(
            name: "YourPackageName",
            dependencies: [
                .product(name: "OhMyLog", package: "OhMyLog")
            ]),
    ]
)

Usage?

Option 1: Use Logger object

import OhMyLog

let list = ["Oh", "My", "Log"]

var logger = Logger(name: "MyProject", level: .info)
logger.logLevel = .trace
logger.trace("Hello, World! \(list)")
logger.debug("Hello, World! \(list)")
logger.info("Hello, World! \(list)")
logger.warn("Hello, World! \(list)")
logger.error("Hello, World! \(list)")
logger.fatal("Hello, World! \(list)")

// Output
[?TRACE] MyProject main.swift:24 - Hello, World! ["Oh", "My", "Log"]
[?DEBUG] MyProject main.swift:25 - Hello, World! ["Oh", "My", "Log"]
[?INFO ] MyProject main.swift:26 - Hello, World! ["Oh", "My", "Log"]
[⚠️WARN ] MyProject main.swift:27 - Hello, World! ["Oh", "My", "Log"]
[?ERROR] MyProject main.swift:28 - Hello, World! ["Oh", "My", "Log"]
[?FATAL] MyProject main.swift:29 - Hello, World! ["Oh", "My", "Log"]

Option 2: Use Log namespace

import OhMyLog

let list = ["Oh", "My", "Log"]

Log.registerLogger(name: "MyProject", level: .info)
Log.setLevel(level: .info)
Log.info("Hello, World! \(list)")

// Output
[?INFO ] MyProject main.swift:26 - Hello, World! ["Oh", "My", "Log"]

Option 3: Without import (recommended)

Create a swift source file in your project with two lines.

import OhMyLog

typealias Log = OhMyLog.Log

Now you are able to log without import OhMyLog.

let list = ["Oh", "My", "Log"]

Log.registerLogger(name: "MyProject", level: .info)
Log.setLevel(level: .info)
Log.info("Hello, World! \(list)")

// Output
[?INFO ] MyProject main.swift:26 - Hello, World! ["Oh", "My", "Log"]

Reference

GitHub

View Github