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//
// System.Web.Util.StrUtils
//
// Author(s):
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2005 Novell, Inc, (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Globalization;
using System.Text;
namespace System.Web.Util {
internal sealed class StrUtils {
static CultureInfo invariant = CultureInfo.InvariantCulture;
private StrUtils () { }
public static bool StartsWith (string str1, string str2)
{
return StartsWith (str1, str2, false);
}
public static bool StartsWith (string str1, string str2, bool ignore_case)
{
int l2 = str2.Length;
if (l2 == 0)
return true;
int l1 = str1.Length;
if (l2 > l1)
return false;
return (0 == String.Compare (str1, 0, str2, 0, l2, ignore_case, invariant));
}
public static bool EndsWith (string str1, string str2)
{
return EndsWith (str1, str2, false);
}
public static bool EndsWith (string str1, string str2, bool ignore_case)
{
int l2 = str2.Length;
if (l2 == 0)
return true;
int l1 = str1.Length;
if (l2 > l1)
return false;
return (0 == String.Compare (str1, l1 - l2, str2, 0, l2, ignore_case, invariant));
}
public static string EscapeQuotesAndBackslashes (string attributeValue)
{
StringBuilder sb = null;
for (int i = 0; i < attributeValue.Length; i++) {
char ch = attributeValue [i];
if (ch == '\'' || ch == '"' || ch == '\\') {
if (sb == null) {
sb = new StringBuilder ();
sb.Append (attributeValue.Substring (0, i));
}
sb.Append ('\\');
sb.Append (ch);
}
else {
if (sb != null)
sb.Append (ch);
}
}
if (sb != null)
return sb.ToString ();
return attributeValue;
}
}
}
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