/Languages/XML.cs |
@@ -0,0 +1,189 @@ |
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3 // |
// Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
// rights of fair usage, the disclaimer and warranty conditions. // |
/////////////////////////////////////////////////////////////////////////// |
|
using System; |
using System.Collections.Generic; |
using System.Linq; |
using System.Linq.Expressions; |
using System.Text; |
using System.Text.RegularExpressions; |
using System.Threading.Tasks; |
using System.Xml.Linq; |
|
namespace wasSharp |
{ |
public static class XML |
{ |
private static readonly Func<string, bool> directIsSafeXML = |
((Expression<Func<string, bool>>) |
(data => |
Regex.Replace(data, |
@"(" + string.Join(@"|", @"&", @"<", @">", @""", @"'") + @")", |
@"", RegexOptions.IgnoreCase | RegexOptions.Multiline) |
.IndexOfAny(new[] { '&', '<', '>', '"', '\'' }) |
.Equals(-1))).Compile(); |
|
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
/////////////////////////////////////////////////////////////////////////// |
/// <summary> |
/// Unescapes a string used in XML. |
/// </summary> |
/// <param name="s">the string to unescape</param> |
/// <returns>an XML unescaped string</returns> |
public static string UnescapeXML(string s) |
{ |
var t = new Queue<char>(); |
var m = new StringBuilder(); |
foreach (var c in s) |
{ |
switch (c) |
{ |
case '&': |
if (!t.Count.Equals(0)) |
{ |
m.Append(string.Join("", t.ToArray())); |
t.Clear(); |
} |
t.Enqueue(c); |
break; |
|
case ';': |
if (!t.Count.Equals(0)) |
{ |
t.Enqueue(c); |
var special = string.Join("", t.ToArray()); |
switch (special) |
{ |
case "'": |
m.Append('\''); |
break; |
|
case """: |
m.Append('"'); |
break; |
|
case ">": |
m.Append('>'); |
break; |
|
case "<": |
m.Append('<'); |
break; |
|
case "&": |
m.Append('&'); |
break; |
|
default: // Unrecognized escape sequence |
m.Append(special); |
break; |
} |
t.Clear(); |
break; |
} |
m.Append(c); |
break; |
|
default: |
if (!t.Count.Equals(0)) |
{ |
t.Enqueue(c); |
if (t.Count >= 6) |
{ |
m.Append(string.Join("", t.ToArray())); |
t.Clear(); |
} |
break; |
} |
m.Append(c); |
break; |
} |
} |
return m.ToString(); |
} |
|
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
/////////////////////////////////////////////////////////////////////////// |
/// <summary> |
/// Escapes a string to be used in XML. |
/// </summary> |
/// <param name="s">the string to escape</param> |
/// <returns>an XML escaped string</returns> |
public static string EscapeXML(string s) |
{ |
if (string.IsNullOrEmpty(s)) return s; |
|
var result = new string[s.Length]; |
Parallel.ForEach(Enumerable.Range(0, s.Length), o => |
{ |
switch (s[o]) |
{ |
case '&': |
result[o] = @"&"; |
break; |
|
case '<': |
result[o] = @"<"; |
break; |
|
case '>': |
result[o] = @">"; |
break; |
|
case '"': |
result[o] = @"""; |
break; |
|
case '\'': |
result[o] = @"'"; |
break; |
|
default: |
result[o] = s[o].ToString(); |
break; |
} |
}); |
return string.Join("", result); |
} |
|
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
/////////////////////////////////////////////////////////////////////////// |
/// <summary> |
/// Determines whether a string is safe to use in XML |
/// </summary> |
/// <param name="data">the string to check</param> |
/// <returns>true in case the string is safe</returns> |
public static bool IsSafeXML(string data) |
{ |
return directIsSafeXML(data); |
} |
|
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
/////////////////////////////////////////////////////////////////////////// |
/// <summary> |
/// Recursively rename a node by name. |
/// </summary> |
/// <param name="root">the root from where to start</param> |
/// <param name="name">the name to replace</param> |
/// <param name="rename">the name to replace with</param> |
public static void RenameNodes(XElement root, string name, string rename) |
{ |
if (string.Equals(root.Name.LocalName, name, StringComparison.Ordinal)) |
{ |
root.Name = rename; |
} |
|
foreach (var xElement in root.Elements()) |
{ |
RenameNodes(xElement, name, rename); |
} |
} |
} |
} |