wasSharp – Blame information for rev 33
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4 | zed | 1 | /////////////////////////////////////////////////////////////////////////// |
2 | // Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3 // |
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3 | // Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
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4 | // rights of fair usage, the disclaimer and warranty conditions. // |
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5 | /////////////////////////////////////////////////////////////////////////// |
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6 | |||
7 | office | 7 | using System; |
4 | zed | 8 | using System.Collections.Generic; |
9 | using System.Linq; |
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7 | office | 10 | using System.Linq.Expressions; |
4 | zed | 11 | using System.Text; |
7 | office | 12 | using System.Text.RegularExpressions; |
4 | zed | 13 | using System.Threading.Tasks; |
7 | office | 14 | using System.Xml.Linq; |
4 | zed | 15 | |
16 | namespace wasSharp |
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17 | { |
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7 | office | 18 | public static class XML |
4 | zed | 19 | { |
7 | office | 20 | private static readonly Func<string, bool> directIsSafeXML = |
21 | ((Expression<Func<string, bool>>) |
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22 | (data => |
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23 | Regex.Replace(data, |
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26 | office | 24 | @"(" + string.Join(@"|", @"&", @"<", @">", @""", @"'") + @")", |
7 | office | 25 | @"", RegexOptions.IgnoreCase | RegexOptions.Multiline) |
27 | office | 26 | .IndexOfAny(new[] { '&', '<', '>', '"', '\'' }) |
7 | office | 27 | .Equals(-1))).Compile(); |
28 | |||
4 | zed | 29 | /////////////////////////////////////////////////////////////////////////// |
30 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
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31 | /////////////////////////////////////////////////////////////////////////// |
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32 | /// <summary> |
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33 | /// Unescapes a string used in XML. |
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34 | /// </summary> |
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35 | /// <param name="s">the string to unescape</param> |
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36 | /// <returns>an XML unescaped string</returns> |
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37 | public static string UnescapeXML(string s) |
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38 | { |
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7 | office | 39 | var t = new Queue<char>(); |
40 | var m = new StringBuilder(); |
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41 | foreach (var c in s) |
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4 | zed | 42 | { |
43 | switch (c) |
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44 | { |
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45 | case '&': |
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46 | if (!t.Count.Equals(0)) |
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47 | { |
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48 | m.Append(string.Join("", t.ToArray())); |
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49 | t.Clear(); |
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50 | } |
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51 | t.Enqueue(c); |
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52 | break; |
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27 | office | 53 | |
4 | zed | 54 | case ';': |
55 | if (!t.Count.Equals(0)) |
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56 | { |
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57 | t.Enqueue(c); |
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7 | office | 58 | var special = string.Join("", t.ToArray()); |
4 | zed | 59 | switch (special) |
60 | { |
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61 | case "'": |
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62 | m.Append('\''); |
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63 | break; |
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27 | office | 64 | |
4 | zed | 65 | case """: |
66 | m.Append('"'); |
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67 | break; |
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27 | office | 68 | |
4 | zed | 69 | case ">": |
70 | m.Append('>'); |
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71 | break; |
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27 | office | 72 | |
4 | zed | 73 | case "<": |
74 | m.Append('<'); |
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75 | break; |
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27 | office | 76 | |
4 | zed | 77 | case "&": |
78 | m.Append('&'); |
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79 | break; |
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27 | office | 80 | |
4 | zed | 81 | default: // Unrecognized escape sequence |
82 | m.Append(special); |
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83 | break; |
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84 | } |
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85 | t.Clear(); |
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86 | break; |
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87 | } |
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88 | m.Append(c); |
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89 | break; |
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27 | office | 90 | |
4 | zed | 91 | default: |
92 | if (!t.Count.Equals(0)) |
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93 | { |
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94 | t.Enqueue(c); |
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95 | if (t.Count >= 6) |
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96 | { |
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97 | m.Append(string.Join("", t.ToArray())); |
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98 | t.Clear(); |
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99 | } |
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100 | break; |
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101 | } |
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102 | m.Append(c); |
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103 | break; |
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104 | } |
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105 | } |
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106 | return m.ToString(); |
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107 | } |
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108 | |||
109 | /////////////////////////////////////////////////////////////////////////// |
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110 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
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111 | /////////////////////////////////////////////////////////////////////////// |
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112 | /// <summary> |
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113 | /// Escapes a string to be used in XML. |
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114 | /// </summary> |
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115 | /// <param name="s">the string to escape</param> |
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116 | /// <returns>an XML escaped string</returns> |
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117 | public static string EscapeXML(string s) |
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118 | { |
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119 | if (string.IsNullOrEmpty(s)) return s; |
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120 | |||
7 | office | 121 | var result = new string[s.Length]; |
4 | zed | 122 | Parallel.ForEach(Enumerable.Range(0, s.Length), o => |
123 | { |
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124 | switch (s[o]) |
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125 | { |
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126 | case '&': |
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127 | result[o] = @"&"; |
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128 | break; |
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27 | office | 129 | |
4 | zed | 130 | case '<': |
131 | result[o] = @"<"; |
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132 | break; |
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27 | office | 133 | |
4 | zed | 134 | case '>': |
135 | result[o] = @">"; |
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136 | break; |
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27 | office | 137 | |
4 | zed | 138 | case '"': |
139 | result[o] = @"""; |
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140 | break; |
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27 | office | 141 | |
4 | zed | 142 | case '\'': |
143 | result[o] = @"'"; |
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144 | break; |
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27 | office | 145 | |
4 | zed | 146 | default: |
147 | result[o] = s[o].ToString(); |
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148 | break; |
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149 | } |
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150 | }); |
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151 | return string.Join("", result); |
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152 | } |
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7 | office | 153 | |
154 | /////////////////////////////////////////////////////////////////////////// |
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155 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
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156 | /////////////////////////////////////////////////////////////////////////// |
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157 | /// <summary> |
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158 | /// Determines whether a string is safe to use in XML |
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159 | /// </summary> |
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160 | /// <param name="data">the string to check</param> |
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161 | /// <returns>true in case the string is safe</returns> |
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162 | public static bool IsSafeXML(string data) |
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163 | { |
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164 | return directIsSafeXML(data); |
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165 | } |
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166 | |||
167 | /////////////////////////////////////////////////////////////////////////// |
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168 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
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169 | /////////////////////////////////////////////////////////////////////////// |
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170 | /// <summary> |
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171 | /// Recursively rename a node by name. |
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172 | /// </summary> |
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173 | /// <param name="root">the root from where to start</param> |
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174 | /// <param name="name">the name to replace</param> |
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175 | /// <param name="rename">the name to replace with</param> |
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176 | public static void RenameNodes(XElement root, string name, string rename) |
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177 | { |
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27 | office | 178 | if (string.Equals(root.Name.LocalName, name, StringComparison.Ordinal)) |
7 | office | 179 | { |
180 | root.Name = rename; |
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181 | } |
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182 | |||
183 | foreach (var xElement in root.Elements()) |
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184 | { |
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185 | RenameNodes(xElement, name, rename); |
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186 | } |
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187 | } |
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4 | zed | 188 | } |
27 | office | 189 | } |