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@@ -0,0 +1,402 @@
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+/*
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+ * ASCIIEncoding.cs - Implementation of the "System.Text.ASCIIEncoding" class.
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+ *
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+ * Copyright (C) 2001 Southern Storm Software, Pty Ltd.
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ */
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+
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+using System;
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+using System.Text;
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+
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+namespace Renci.SshNet.Common
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+{
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+ public partial class ASCIIEncoding : Encoding
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+ {
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+ // Magic number used by Windows for "ASCII".
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+ internal const int ASCII_CODE_PAGE = 20127;
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+
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+ private static ASCIIEncoding _current = new ASCIIEncoding();
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+ /// <summary>
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+ /// Gets the current encoding.
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+ /// </summary>
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+ public static ASCIIEncoding Current
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+ {
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+ get
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+ {
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+ return _current;
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Calculates the number of bytes produced by encoding a set of characters from the specified character array.
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+ /// </summary>
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+ /// <param name="chars">The character array containing the set of characters to encode.</param>
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+ /// <param name="index">The index of the first character to encode.</param>
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+ /// <param name="count">The number of characters to encode.</param>
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+ /// <returns>
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+ /// The number of bytes produced by encoding the specified characters.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="chars"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="index"/> or <paramref name="count"/> is less than zero.-or- <paramref name="index"/> and <paramref name="count"/> do not denote a valid range in <paramref name="chars"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.EncoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.EncoderFallback"/> is set to <see cref="T:System.Text.EncoderExceptionFallback"/>.</exception>
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+ public override int GetByteCount(char[] chars, int index, int count)
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+ {
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+ if (chars == null)
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+ {
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+ throw new ArgumentNullException("chars");
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+ }
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+ if (index < 0 || index > chars.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("index");
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+ }
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+ if (count < 0 || count > (chars.Length - index))
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+ {
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+ throw new ArgumentOutOfRangeException("count");
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+ }
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+ return count;
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+ }
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+
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+ /// <summary>
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+ /// Gets the byte count.
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+ /// </summary>
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+ /// <param name="chars">The chars.</param>
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+ /// <returns></returns>
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+ public override int GetByteCount(string chars)
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+ {
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+ if (chars == null)
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+ {
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+ throw new ArgumentNullException("chars");
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+ }
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+ return chars.Length;
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+ }
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+
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+ /// <summary>
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+ /// Encodes a set of characters from the specified character array into the specified byte array.
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+ /// </summary>
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+ /// <param name="chars">The character array containing the set of characters to encode.</param>
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+ /// <param name="charIndex">The index of the first character to encode.</param>
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+ /// <param name="charCount">The number of characters to encode.</param>
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+ /// <param name="bytes">The byte array to contain the resulting sequence of bytes.</param>
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+ /// <param name="byteIndex">The index at which to start writing the resulting sequence of bytes.</param>
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+ /// <returns>
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+ /// The actual number of bytes written into <paramref name="bytes"/>.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="chars"/> is null.-or- <paramref name="bytes"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="charIndex"/> or <paramref name="charCount"/> or <paramref name="byteIndex"/> is less than zero.-or- <paramref name="charIndex"/> and <paramref name="charCount"/> do not denote a valid range in <paramref name="chars"/>.-or- <paramref name="byteIndex"/> is not a valid index in <paramref name="bytes"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentException">
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+ /// <paramref name="bytes"/> does not have enough capacity from <paramref name="byteIndex"/> to the end of the array to accommodate the resulting bytes. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.EncoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.EncoderFallback"/> is set to <see cref="T:System.Text.EncoderExceptionFallback"/>.</exception>
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+ public override int GetBytes(char[] chars, int charIndex, int charCount, byte[] bytes, int byteIndex)
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+ {
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+ if (chars == null)
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+ {
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+ throw new ArgumentNullException("chars");
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+ }
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+ if (bytes == null)
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+ {
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+ throw new ArgumentNullException("bytes");
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+ }
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+ if (charIndex < 0 || charIndex > chars.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("charIndex");
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+ }
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+ if (charCount < 0 || charCount > (chars.Length - charIndex))
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+ {
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+ throw new ArgumentOutOfRangeException("charCount");
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+ }
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+ if (byteIndex < 0 || byteIndex > bytes.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("byteIndex");
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+ }
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+ if ((bytes.Length - byteIndex) < charCount)
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+ {
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+ throw new ArgumentException();
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+ }
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+ int count = charCount;
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+ char ch;
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+ while (count-- > 0)
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+ {
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+ ch = chars[charIndex++];
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+ if (ch < (char)0x80)
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+ {
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+ bytes[byteIndex++] = (byte)ch;
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+ }
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+ else
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+ {
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+ bytes[byteIndex++] = (byte)'?';
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+ }
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+ }
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+ return charCount;
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+ }
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+
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+ /// <summary>
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+ /// Encodes a set of characters from the specified <see cref="T:System.String"/> into the specified byte array.
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+ /// </summary>
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+ /// <param name="s">The <see cref="T:System.String"/> containing the set of characters to encode.</param>
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+ /// <param name="charIndex">The index of the first character to encode.</param>
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+ /// <param name="charCount">The number of characters to encode.</param>
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+ /// <param name="bytes">The byte array to contain the resulting sequence of bytes.</param>
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+ /// <param name="byteIndex">The index at which to start writing the resulting sequence of bytes.</param>
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+ /// <returns>
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+ /// The actual number of bytes written into <paramref name="bytes"/>.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="s"/> is null.-or- <paramref name="bytes"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="charIndex"/> or <paramref name="charCount"/> or <paramref name="byteIndex"/> is less than zero.-or- <paramref name="charIndex"/> and <paramref name="charCount"/> do not denote a valid range in <paramref name="chars"/>.-or- <paramref name="byteIndex"/> is not a valid index in <paramref name="bytes"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentException">
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+ /// <paramref name="bytes"/> does not have enough capacity from <paramref name="byteIndex"/> to the end of the array to accommodate the resulting bytes. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.EncoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.EncoderFallback"/> is set to <see cref="T:System.Text.EncoderExceptionFallback"/>.</exception>
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+ public override int GetBytes(String s, int charIndex, int charCount, byte[] bytes, int byteIndex)
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+ {
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+ if (s == null)
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+ {
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+ throw new ArgumentNullException("s");
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+ }
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+ if (bytes == null)
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+ {
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+ throw new ArgumentNullException("bytes");
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+ }
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+ if (charIndex < 0 || charIndex > s.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("charIndex");
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+ }
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+ if (charCount < 0 || charCount > (s.Length - charIndex))
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+ {
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+ throw new ArgumentOutOfRangeException("charCount");
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+ }
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+ if (byteIndex < 0 || byteIndex > bytes.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("byteIndex");
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+ }
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+ if ((bytes.Length - byteIndex) < charCount)
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+ {
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+ throw new ArgumentException();
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+ }
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+ int count = charCount;
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+ char ch;
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+ while (count-- > 0)
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+ {
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+ ch = s[charIndex++];
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+ if (ch < (char)0x80)
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+ {
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+ bytes[byteIndex++] = (byte)ch;
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+ }
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+ else
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+ {
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+ bytes[byteIndex++] = (byte)'?';
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+ }
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+ }
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+ return charCount;
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+ }
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+
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+ /// <summary>
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+ /// Calculates the number of characters produced by decoding a sequence of bytes from the specified byte array.
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+ /// </summary>
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+ /// <param name="bytes">The byte array containing the sequence of bytes to decode.</param>
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+ /// <param name="index">The index of the first byte to decode.</param>
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+ /// <param name="count">The number of bytes to decode.</param>
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+ /// <returns>
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+ /// The number of characters produced by decoding the specified sequence of bytes.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="bytes"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="index"/> or <paramref name="count"/> is less than zero.-or- <paramref name="index"/> and <paramref name="count"/> do not denote a valid range in <paramref name="bytes"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.DecoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.DecoderFallback"/> is set to <see cref="T:System.Text.DecoderExceptionFallback"/>.</exception>
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+ public override int GetCharCount(byte[] bytes, int index, int count)
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+ {
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+ if (bytes == null)
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+ {
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+ throw new ArgumentNullException("bytes");
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+ }
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+ if (index < 0 || index > bytes.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("index");
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+ }
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+ if (count < 0 || count > (bytes.Length - index))
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+ {
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+ throw new ArgumentOutOfRangeException("count");
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+ }
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+ return count;
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+ }
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+
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+ /// <summary>
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+ /// Decodes a sequence of bytes from the specified byte array into the specified character array.
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+ /// </summary>
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+ /// <param name="bytes">The byte array containing the sequence of bytes to decode.</param>
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+ /// <param name="byteIndex">The index of the first byte to decode.</param>
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+ /// <param name="byteCount">The number of bytes to decode.</param>
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+ /// <param name="chars">The character array to contain the resulting set of characters.</param>
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+ /// <param name="charIndex">The index at which to start writing the resulting set of characters.</param>
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+ /// <returns>
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+ /// The actual number of characters written into <paramref name="chars"/>.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="bytes"/> is null.-or- <paramref name="chars"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="byteIndex"/> or <paramref name="byteCount"/> or <paramref name="charIndex"/> is less than zero.-or- <paramref name="byteindex"/> and <paramref name="byteCount"/> do not denote a valid range in <paramref name="bytes"/>.-or- <paramref name="charIndex"/> is not a valid index in <paramref name="chars"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentException">
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+ /// <paramref name="chars"/> does not have enough capacity from <paramref name="charIndex"/> to the end of the array to accommodate the resulting characters. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.DecoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.DecoderFallback"/> is set to <see cref="T:System.Text.DecoderExceptionFallback"/>.</exception>
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+ public override int GetChars(byte[] bytes, int byteIndex, int byteCount, char[] chars, int charIndex)
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+ {
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+ if (bytes == null)
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+ {
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+ throw new ArgumentNullException("bytes");
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+ }
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+ if (chars == null)
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+ {
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+ throw new ArgumentNullException("chars");
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+ }
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+ if (byteIndex < 0 || byteIndex > bytes.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("byteIndex");
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+ }
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+ if (byteCount < 0 || byteCount > (bytes.Length - byteIndex))
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+ {
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+ throw new ArgumentOutOfRangeException("byteCount");
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+ }
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+ if (charIndex < 0 || charIndex > chars.Length)
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+ {
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+ throw new ArgumentOutOfRangeException("charIndex");
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+ }
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+ if ((chars.Length - charIndex) < byteCount)
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+ {
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+ throw new ArgumentException();
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+ }
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+ int count = byteCount;
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+ byte ch;
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+ while (count-- > 0)
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+ {
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+ ch = bytes[byteIndex++];
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+ if (ch < 0x80)
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+ {
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+ chars[charIndex++] = (char)ch;
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+ }
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+ else
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+ {
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+ chars[charIndex++] = '?';
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+ }
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+ }
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+ return byteCount;
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+ }
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+
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+ /// <summary>
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+ /// Calculates the maximum number of bytes produced by encoding the specified number of characters.
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+ /// </summary>
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+ /// <param name="charCount">The number of characters to encode.</param>
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+ /// <returns>
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+ /// The maximum number of bytes produced by encoding the specified number of characters.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="charCount"/> is less than zero. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.EncoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.EncoderFallback"/> is set to <see cref="T:System.Text.EncoderExceptionFallback"/>.</exception>
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+ public override int GetMaxByteCount(int charCount)
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+ {
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+ if (charCount < 0)
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+ {
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+ throw new ArgumentOutOfRangeException("charCount");
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+ }
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+
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+ return charCount;
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+ }
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+
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+ /// <summary>
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+ /// Calculates the maximum number of characters produced by decoding the specified number of bytes.
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+ /// </summary>
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+ /// <param name="byteCount">The number of bytes to decode.</param>
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+ /// <returns>
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+ /// The maximum number of characters produced by decoding the specified number of bytes.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="byteCount"/> is less than zero. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.DecoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.DecoderFallback"/> is set to <see cref="T:System.Text.DecoderExceptionFallback"/>.</exception>
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+ public override int GetMaxCharCount(int byteCount)
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+ {
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+ if (byteCount < 0)
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+ {
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+ throw new ArgumentOutOfRangeException("byteCount");
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+ }
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+ return byteCount;
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+ }
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+
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+ /// <summary>
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+ /// Decodes a sequence of bytes from the specified byte array into a string.
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+ /// </summary>
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+ /// <param name="bytes">The byte array containing the sequence of bytes to decode.</param>
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+ /// <param name="index">The index of the first byte to decode.</param>
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+ /// <param name="count">The number of bytes to decode.</param>
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+ /// <returns>
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+ /// A <see cref="T:System.String"/> containing the results of decoding the specified sequence of bytes.
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+ /// </returns>
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+ /// <exception cref="T:System.ArgumentException">The byte array contains invalid Unicode code points.</exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentNullException">
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+ /// <paramref name="bytes"/> is null. </exception>
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+ ///
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+ /// <exception cref="T:System.ArgumentOutOfRangeException">
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+ /// <paramref name="index"/> or <paramref name="count"/> is less than zero.-or- <paramref name="index"/> and <paramref name="count"/> do not denote a valid range in <paramref name="bytes"/>. </exception>
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+ ///
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+ /// <exception cref="T:System.Text.DecoderFallbackException">A fallback occurred (see Understanding Encodings for complete explanation)-and-<see cref="P:System.Text.Encoding.DecoderFallback"/> is set to <see cref="T:System.Text.DecoderExceptionFallback"/>.</exception>
|
|
|
+ public override String GetString(byte[] bytes, int index, int count)
|
|
|
+ {
|
|
|
+ if (bytes == null)
|
|
|
+ {
|
|
|
+ throw new ArgumentNullException("bytes");
|
|
|
+ }
|
|
|
+ if (index < 0 || index > bytes.Length)
|
|
|
+ {
|
|
|
+ throw new ArgumentOutOfRangeException("index");
|
|
|
+ }
|
|
|
+ if (count < 0 || count > (bytes.Length - index))
|
|
|
+ {
|
|
|
+ throw new ArgumentOutOfRangeException("count");
|
|
|
+ }
|
|
|
+ if (count == 0)
|
|
|
+ {
|
|
|
+ return String.Empty;
|
|
|
+ }
|
|
|
+
|
|
|
+ char[] chars = new char[count];
|
|
|
+ int posn = 0;
|
|
|
+ while (count-- > 0)
|
|
|
+ {
|
|
|
+ chars[posn++] = (char)(bytes[index++]);
|
|
|
+ }
|
|
|
+ return new string(chars);
|
|
|
+ }
|
|
|
+ };
|
|
|
+}
|
olegkap_cp