Filesystem Info

Inspects one path with Os.fsInfo and reports what it is. Shows nullable returns for paths that may not exist, and match over an enum with a _ fallback.

Browse this example on GitHub

Run it

git clone https://github.com/lauriszz123/saule.git
cd saule/examples/fs-info-example
saule run -- .

saule.config

name: "log-cleaner"
version: "0.1.0"
entry: "src/main.sau"
src_dirs: ["src"]
min_saule_version: "26.1"

src/main.sau

src/main.sau

class Main
  static fn usage()
    println("Usage:")
    println("  saule run -- <path>")
  end

  static fn main()
    local args = Os.args()

    match args[1]
      case nil then Main.usage()

      case v then Main.run(v)
    end
  end

  static fn run(path: string)
    local info = Os.fsInfo(path)

    if info == nil then
      printf("Error: Path not found: %s\n", path)
      return
    end

    match info.kind
      case FsKind.File then
        printf("File: %s\n", info.path)
        printf("Size: %d bytes\n", info.size)
        printf("Modified at: %d\n", info.modifiedAt)

      case FsKind.Dir then
        printf("Directory: %s\n", info.path)
        printf("Size: %d bytes\n", info.size)
        printf("Modified at: %s\n", info.modifiedAt)

      case _ then println("Something else")
    end
  end
end