1 files changed, 45 insertions, 0 deletions
diff --git a/Sources/phbar/Models/Runner.swift b/Sources/phbar/Models/Runner.swift
new file mode 100644
index 0000000..a98d34a
--- /dev/null
+++ b/Sources/phbar/Models/Runner.swift
@@ -0,0 +1,45 @@
+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
+	}
+}