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b2e0c858e3
applies to the latter. Converted methods from AlertSummaryPage to one Alert and one String extension method so they can be used more widely. Code simplification on the Updates page. Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
104 lines
4.2 KiB
C#
104 lines
4.2 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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namespace XenAdmin
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{
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public static class StringExtensions
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{
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/// <summary>
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/// Ellipsise string by appending the ellipsis - no truncation is performed
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/// </summary>
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/// <param name="input"></param>
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/// <returns></returns>
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public static string AddEllipsis(this string input)
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{
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return String.Concat(input, Messages.ELLIPSIS);
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}
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/// <summary>
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/// If input is longer than maxLength, returns a string of length maxLength consisting of a truncated
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/// version of the input string with an i18n'd ellipsis character appended. Otherwise returns input.
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/// </summary>
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/// <param name="input">May be null, in which case the empty string is returned.</param>
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/// <param name="maxLength">Must be >= Messages.ELLIPSIS.Length.</param>
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/// <returns></returns>
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public static string Ellipsise(this string input, int maxLength)
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{
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if (maxLength < Messages.ELLIPSIS.Length)
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return ".";
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if (input == null)
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return "";
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if (input.Length < maxLength)
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return input;
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else
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return input.Truncate(maxLength - Messages.ELLIPSIS.Length) + Messages.ELLIPSIS;
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}
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/// <summary>
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/// Truncate string to a fixed number of characters, but not cutting it in the middle of a UTF-16 surrogate pair:
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/// shorten it by one if necessary. The "number of characters" is actually "number of UTF-16 double bytes", not
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/// the number of true Unicode characters. In other words, this a safe replacement for s.Substring(0, len).
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/// </summary>
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/// <reference>CA-89876</reference>
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/// <param name="s">The string to be truncated</param>
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/// <param name="len">The length of the resultant string</param>
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/// <returns>A truncated copy of the string</returns>
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public static string Truncate(this string s, int len)
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{
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if (len > 0 && Char.IsSurrogatePair(s, len - 1))
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return s.Substring(0, len - 1);
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else
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return s.Substring(0, len);
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}
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/// <summary>
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/// Escapes ampersands by doubling them up. Will return null if passed null.
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static string EscapeAmpersands(this string s)
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{
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if (s == null)
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return null;
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else
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return s.Replace("&", "&&");
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}
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public static string EscapeQuotes(this string s)
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{
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return s == null ? null : s.Replace("\"", "\"\"");
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}
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}
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}
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