src/Carnac.Logic/ShortcutProvider.cs

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using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using Carnac.Logic.Models;
using YamlDotNet.RepresentationModel;

namespace Carnac.Logic
{
    public class ShortcutProvider : IShortcutProvider
    {
        readonly List<ShortcutCollection> shortcuts;

        public ShortcutProvider()
        {
            string folder = Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName) + @"\Keymaps\";
            string filter = "*.yml";
            if (!Directory.Exists(folder)) return;
            string[] files = Directory.GetFiles(folder, filter);

            shortcuts = GetYamlMappings(files).Select(GetShortcuts).ToList();
        }

        public List<KeyShortcut> GetShortcutsStartingWith(KeyPress keys)
        {
            var processName = keys.Process.ProcessName;
            return shortcuts
                .Where(s => s.Process == processName || string.IsNullOrWhiteSpace(s.Process))
                .SelectMany(shortcut => shortcut.GetShortcutsMatching(new[] { keys }))
                .ToList();
        }

        static string GetValueByKey(YamlMappingNode node, string name)
        {
            return node.Children.First(n => n.Key.ToString() == name).Value.ToString();
        }

        static KeyPressDefinition GetKeyPressDefintion(string combo)
        {
            combo = combo.ToLower();
            var key = combo.Split('+').Last();
            var keys = ReplaceKey.ToKey(key);
            if (keys != null)
                return
                    new KeyPressDefinition
                        (keys.Value,
                         shiftPressed: combo.Contains("shift"),
                         controlPressed: combo.Contains("ctrl"),
                         altPressed: combo.Contains("alt"),
                         winkeyPressed: combo.Contains("win"));
            return null;
        }

        static IEnumerable<YamlMappingNode> GetYamlMappings(IEnumerable<string> filePaths)
        {
            var yaml = new YamlStream();

            foreach (var file in filePaths)
            {
                yaml.Load(File.OpenText(file));