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72 lines
2.9 KiB
C#
72 lines
2.9 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Extensions.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Helpers.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Provides class extensions.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2024 Natalia Portillo
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// ****************************************************************************/
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using System.IO;
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namespace RomRepoMgr.Core;
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public static class Extensions
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{
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/// <summary>
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/// When overridden in a derived class, reads a sequence of bytes from the current stream and advances the
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/// position within the stream by the number of bytes read.<br /> Guarantees the whole count of bytes is read or EOF is
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/// found
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/// </summary>
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/// <param name="s">Stream to extend</param>
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/// <param name="buffer">
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/// An array of bytes. When this method returns, the buffer contains the specified byte array with the
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/// values between <see cref="offset" /> and (<see cref="offset" /> + <see cref="count" /> - 1) replaced by the bytes
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/// read from the current source.
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/// </param>
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/// <param name="offset">
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/// The zero-based byte offset in <see cref="buffer" /> at which to begin storing the data read from
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/// the current stream.
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/// </param>
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/// <param name="count">The maximum number of bytes to be read from the current stream.</param>
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/// <returns>
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/// The total number of bytes read into the buffer. This can be less than the number of bytes requested if the end
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/// of the stream has been reached.
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/// </returns>
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public static int EnsureRead(this Stream s, byte[] buffer, int offset, int count)
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{
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int pos = 0;
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int read;
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do
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{
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read = s.Read(buffer, pos + offset, count - pos);
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pos += read;
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} while(read > 0);
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return pos;
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}
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} |