103 lines
2.7 KiB
C#
103 lines
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using Foodsoft.Alpm;
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// ReSharper disable once UnusedType.Global
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namespace Samples
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{
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[Example("installed")]
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internal class Installed : IExample
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{
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public int Run(string[] args)
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{
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using var h = new Handle("/", "/var/lib/pacman");
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using var db = h.LocalDB;
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foreach (var pkg in db.PackageCache)
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using (pkg)
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{
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Console.WriteLine("{0} {1}", pkg.Name, pkg.Version);
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}
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return 0;
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}
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}
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[Example("search")]
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internal class Search : IExample
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{
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public int Run(string[] args)
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{
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using var h = new Handle("/", "/var/lib/pacman");
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using var db = h.RegisterSyncDB("core");
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db.Servers = new[]{"http://www.google.com"};
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db.Update(true);
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foreach (var pkg in db.PackageCache)
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using (pkg)
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{
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Console.WriteLine("{0} {1} {2}", pkg.Name, pkg.Version, pkg.Description);
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}
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return 0;
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}
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}
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}
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namespace Samples
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{
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internal static class Program
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{
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private static int Main(string[] args)
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{
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var examples = (from t in Assembly.GetExecutingAssembly().GetTypes()
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let attribute = (Example?) t.GetCustomAttribute(typeof(Example))
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where attribute != null
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select new {Name = attribute.Name, Type = t}).ToImmutableDictionary((e) => e.Name);
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if (args.Length < 1)
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{
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Console.Error.WriteLine("Sample");
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foreach (var example in examples.Values)
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{
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Console.Error.WriteLine("{0}", example.Name);
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}
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return 1;
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}
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int ret;
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try
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{
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ret = ((IExample) Activator.CreateInstance(examples[args[0]].Type)!).Run(args);
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}
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catch (AlpmException e)
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{
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Console.Error.WriteLine("{0}", e.Message);
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return 1;
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}
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return ret;
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}
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}
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[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct, AllowMultiple = false)]
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public class Example : Attribute
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{
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public string Name { get; }
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public Example(string name)
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{
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Name = name;
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}
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}
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public interface IExample
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{
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public int Run(string[] args);
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}
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} |