Flow.Launcher/Flow.Launcher.Core/Plugin/QueryBuilder.cs

using System;
using System.Collections.Generic;
using Flow.Launcher.Plugin;

namespace Flow.Launcher.Core.Plugin
{
    public static class QueryBuilder
    {
        public static Query Build(string text, Dictionary<string, PluginPair> nonGlobalPlugins)
        {
            // replace multiple white spaces with one white space
            var terms = text.Split(Query.TermSeparator, StringSplitOptions.RemoveEmptyEntries);
            if (terms.Length == 0)
            { // nothing was typed
                return null;
            }

            var rawQuery = text;
            string actionKeyword, search;
            string possibleActionKeyword = terms[0];
            string[] searchTerms;

            if (nonGlobalPlugins.TryGetValue(possibleActionKeyword, out var pluginPair) && !pluginPair.Metadata.Disabled)
            { // use non global plugin for query
                actionKeyword = possibleActionKeyword;
                search = terms.Length > 1 ? rawQuery[(actionKeyword.Length + 1)..].TrimStart() : string.Empty;
                searchTerms = terms[1..];
            }
            else
            { // non action keyword
                actionKeyword = string.Empty;
                search = rawQuery.TrimStart();
                searchTerms = terms;
            }

            return new Query ()
            {
                Search = search,
                RawQuery = rawQuery,
                SearchTerms = searchTerms,
                ActionKeyword = actionKeyword
            };
        }
    }
}