Simple info/show command

Sources/apk/Index/ApkIndex.swift

@@ -7,12 +7,18 @@ public struct ApkIndex: Sendable {
   public let packages: [ApkIndexPackage]
 }
 
-extension ApkIndex {
+public extension ApkIndex {
   func first(name: String) -> ApkIndexPackage? {
     self.packages.first {
       $0.name == name
     }
   }
+
+  func filter(name: String) -> [ApkIndexPackage] {
+    self.packages.filter {
+      $0.name == name
+    }
+  }
 }
 
 public extension ApkIndex {

Sources/dpk-cli/CommandLine.swift

@@ -15,6 +15,7 @@ struct DarwinApkCLI: AsyncParsableCommand {
       DpkRemoveCommand.self,
       DpkUpdateCommand.self,
       DpkUpgradeCommand.self,
-      DpkSearchCommand.self
+      DpkSearchCommand.self,
+      DpkInfoCommand.self
     ])
 }

Sources/dpk-cli/Subcommands/DpkInfoCommand.swift

@@ -0,0 +1,33 @@
+/*
+ * darwin-apk © 2024 Gay Pizza Specifications
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import ArgumentParser
+import darwin_apk
+
+struct DpkInfoCommand: AsyncParsableCommand {
+  static let configuration = CommandConfiguration(
+    commandName: "info",
+    abstract: "Show information about a package",
+    aliases: [ "S", "show" ])
+
+  @Argument(help: "One or more package names to print information about.")
+  var packages: [String]
+
+  func run() async throws(ExitCode) {
+    let localRepositories = try await ApkRepositoriesConfig()
+    let index: ApkIndex
+    do {
+      index = try await ApkIndexReader.resolve(localRepositories, fetch: .local)
+    } catch {
+      eprint("Failed to build package index: \(error.localizedDescription)")
+      throw .failure
+    }
+
+    self.packages.lazy
+      .flatMap(index.filter)
+      .map(\.description)
+      .forEach { print($0) }
+  }
+}