mirror of https://bitbucket.org/anguist/ntpa
88 lines
2.6 KiB
C#
88 lines
2.6 KiB
C#
//
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// Copyright (c) 2013-2017 Carsten Sonne Larsen <cs@innolan.net>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using Ntp.Common.IO;
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using Ntp.Common.Log;
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namespace Ntp.Analyzer.Import
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{
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public abstract class Importer<T> : IEnumerable<T>
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{
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protected Importer(LogBase log)
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{
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Log = log;
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}
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private readonly object locker = new object();
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private List<T> entries;
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protected StreamReader Reader { get; private set; }
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protected IList<T> Entries => entries;
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protected LogBase Log { get; }
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protected abstract string Command { get; }
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protected abstract string Arguments { get; }
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protected abstract string ErrorMessage { get; }
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public IEnumerator<T> GetEnumerator()
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{
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Execute();
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return entries.GetEnumerator();
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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public void Execute()
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{
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lock (locker)
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{
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if (entries != null)
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return;
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Initialize();
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var command = new ShellCommand(Command, Arguments, Log, ErrorMessage);
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Reader = command.Execute();
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if (Reader == null)
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return;
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ReadFromStream();
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}
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}
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protected virtual void Initialize()
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{
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entries = new List<T>();
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}
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protected abstract void ReadFromStream();
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}
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} |