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import Foundation
/// Runs a shell command and returns its stdout as cells (one per line).
///
/// Blocking — always call from a background context (e.g. `Task.detached`).
enum Runner {
static func run(_ command: String, env: [String: String] = [:]) -> [String] {
let process = Process()
process.executableURL = URL(fileURLWithPath: "/bin/sh")
process.arguments = ["-c", command]
var environment = ProcessInfo.processInfo.environment
environment.merge(env) { _, new in new }
process.environment = environment
let stdout = Pipe()
let stderr = Pipe()
process.standardOutput = stdout
process.standardError = stderr
guard let _ = try? process.run() else {
return ["(error)"]
}
let data = stdout.fileHandleForReading.readDataToEndOfFile()
let errData = stderr.fileHandleForReading.readDataToEndOfFile()
process.waitUntilExit()
if process.terminationStatus != 0 {
let reason = String(data: errData, encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines)
FileHandle.standardError.write("phbar: `\(command)` failed: \(reason ?? "exit \(process.terminationStatus)")\n".data(using: .utf8)!)
}
return parse(String(data: data, encoding: .utf8) ?? "")
}
/// Split output into cells: one per line. A single trailing newline (from a
/// final `\n`) is dropped; blank lines elsewhere are kept so a script can
/// emit intentional gaps.
static func parse(_ text: String) -> [String] {
var lines = text.components(separatedBy: "\n")
if lines.last == "" { lines.removeLast() }
return lines
}
}
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