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annotate deps/Platinum/ThirdParty/Neptune/Source/Core/NptXml.h @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Neptune - Xml Support
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4 |
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5 | Copyright (c) 2002-2008, Axiomatic Systems, LLC.
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6 | All rights reserved.
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7 |
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8 | Redistribution and use in source and binary forms, with or without
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9 | modification, are permitted provided that the following conditions are met:
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10 | * Redistributions of source code must retain the above copyright
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11 | notice, this list of conditions and the following disclaimer.
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12 | * Redistributions in binary form must reproduce the above copyright
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13 | notice, this list of conditions and the following disclaimer in the
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14 | documentation and/or other materials provided with the distribution.
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15 | * Neither the name of Axiomatic Systems nor the
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16 | names of its contributors may be used to endorse or promote products
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17 | derived from this software without specific prior written permission.
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18 |
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19 | THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
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20 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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21 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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22 | DISCLAIMED. IN NO EVENT SHALL AXIOMATIC SYSTEMS BE LIABLE FOR ANY
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23 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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26 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 |
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30 ****************************************************************/
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31
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32 #ifndef _NPT_XML_H_
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33 #define _NPT_XML_H_
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34
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35 /*----------------------------------------------------------------------
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36 | includes
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37 +---------------------------------------------------------------------*/
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38 #include "NptTypes.h"
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39 #include "NptList.h"
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40 #include "NptStrings.h"
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41 #include "NptStreams.h"
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42
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43 /*----------------------------------------------------------------------
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44 | constants
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45 +---------------------------------------------------------------------*/
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46 const int NPT_ERROR_XML_INVALID_NESTING = NPT_ERROR_BASE_XML - 0;
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47 const int NPT_ERROR_XML_TAG_MISMATCH = NPT_ERROR_BASE_XML - 1;
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48
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49 #define NPT_XML_ANY_NAMESPACE "*"
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50 #define NPT_XML_NO_NAMESPACE NULL
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51
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52 /*----------------------------------------------------------------------
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53 | forward declarations
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54 +---------------------------------------------------------------------*/
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55 class NPT_XmlProcessor;
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56
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57 /*----------------------------------------------------------------------
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58 | NPT_XmlAttribute
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59 +---------------------------------------------------------------------*/
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60 class NPT_XmlAttribute
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61 {
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62 public:
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63 // methods
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64 NPT_XmlAttribute(const char* name, const char* value);
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65 NPT_XmlAttribute(const char* prefix, const char* name, const char* value) :
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66 m_Prefix(prefix), m_Name(name), m_Value(value) {}
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67 const NPT_String& GetPrefix() const { return m_Prefix; }
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68 const NPT_String& GetName() const { return m_Name; }
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69 const NPT_String& GetValue() const { return m_Value; }
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70 void SetValue(const char* value) { m_Value = value; }
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71
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72 private:
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73 // members
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74 NPT_String m_Prefix;
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75 NPT_String m_Name;
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76 NPT_String m_Value;
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77
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78 NPT_XmlAttribute(const NPT_XmlAttribute& attribute) :
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79 m_Prefix(attribute.m_Prefix),
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80 m_Name(attribute.m_Name),
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81 m_Value(attribute.m_Value) {}
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82 NPT_XmlAttribute& operator=(const NPT_XmlAttribute& a);
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83
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84 // friends
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85 friend class NPT_XmlAttributeFinder;
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86 friend class NPT_XmlAttributeFinderWithPrefix;
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87 };
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88
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89 /*----------------------------------------------------------------------
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90 | NPT_XmlNamespaceMap
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91 +---------------------------------------------------------------------*/
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92 class NPT_XmlNamespaceMap
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93 {
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94 public:
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95 // destructor
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96 ~NPT_XmlNamespaceMap();
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97
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98 // methods
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99 NPT_Result SetNamespaceUri(const char* prefix, const char* uri);
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100 const NPT_String* GetNamespaceUri(const char* prefix);
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101 const NPT_String* GetNamespacePrefix(const char* uri);
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102
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103 private:
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104 // types
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105 class Entry {
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106 public:
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107 // constructor
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108 Entry(const char* prefix, const char* uri) :
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109 m_Prefix(prefix), m_Uri(uri) {}
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110
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111 // members
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112 NPT_String m_Prefix;
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113 NPT_String m_Uri;
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114 };
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115
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116 // members
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117 NPT_List<Entry*> m_Entries;
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118
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119 // friends
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120 friend class NPT_XmlWriter;
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121 friend class NPT_XmlNodeWriter;
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122 friend class NPT_XmlNodeCanonicalWriter;
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123 };
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124
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125 /*----------------------------------------------------------------------
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126 | NPT_XmlNode
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127 +---------------------------------------------------------------------*/
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128 class NPT_XmlElementNode;
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129 class NPT_XmlTextNode;
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130 class NPT_XmlNode
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131 {
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132 public:
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133 // types
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134 typedef enum {
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135 DOCUMENT,
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136 ELEMENT,
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137 TEXT
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138 } Type;
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139
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140 // methods
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141 NPT_XmlNode(Type type) : m_Type(type), m_Parent(NULL) {}
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142 virtual ~NPT_XmlNode() {}
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143 Type GetType() const { return m_Type; }
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144 NPT_XmlNode* GetParent() const { return m_Parent; }
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145
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146 // type casting
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147 virtual NPT_XmlElementNode* AsElementNode() { return NULL; }
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148 virtual const NPT_XmlElementNode* AsElementNode() const { return NULL; }
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149 virtual NPT_XmlTextNode* AsTextNode() { return NULL; }
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150 virtual const NPT_XmlTextNode* AsTextNode() const { return NULL; }
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151
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152 protected:
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153 // methods
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154 virtual void SetParent(NPT_XmlNode* parent) { m_Parent = parent; }
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155
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156 // members
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157 Type m_Type;
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158 NPT_XmlNode* m_Parent;
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159
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160 // friends
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161 friend class NPT_XmlNodeFinder;
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162 friend class NPT_XmlSerializer;
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163 friend class NPT_XmlWriter;
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164 friend class NPT_XmlElementNode; // to allow access to SetParent()
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165 };
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166
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167 /*----------------------------------------------------------------------
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168 | NPT_XmlElementNode
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169 +---------------------------------------------------------------------*/
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170 class NPT_XmlElementNode : public NPT_XmlNode
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171 {
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172 public:
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173 // methods
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174 NPT_XmlElementNode(const char* tag);
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175 NPT_XmlElementNode(const char* prefix, const char* tag);
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176 virtual ~NPT_XmlElementNode();
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177 NPT_List<NPT_XmlNode*>& GetChildren() { return m_Children; }
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178 const NPT_List<NPT_XmlNode*>&
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179 GetChildren() const { return m_Children; }
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180 NPT_XmlElementNode* GetChild(const char* tag,
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181 const char* namespc = NPT_XML_NO_NAMESPACE,
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182 NPT_Ordinal n=0) const;
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183 NPT_Result AddChild(NPT_XmlNode* child);
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184 NPT_Result SetAttribute(const char* prefix,
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185 const char* name,
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186 const char* value);
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187 NPT_Result SetAttribute(const char* name,
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188 const char* value);
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189 NPT_Result AddText(const char* text);
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190 NPT_List<NPT_XmlAttribute*>&
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191 GetAttributes() { return m_Attributes; }
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192 const NPT_List<NPT_XmlAttribute*>&
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193 GetAttributes() const { return m_Attributes; }
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194 const NPT_String* GetAttribute(const char* name,
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195 const char* namespc = NPT_XML_NO_NAMESPACE) const;
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196 const NPT_String& GetPrefix() const { return m_Prefix; }
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197 const NPT_String& GetTag() const { return m_Tag; }
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198 const NPT_String* GetText(NPT_Ordinal n=0) const;
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199
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200 // bring all the namespace definitions used in this element of one of its descendants
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201 // into the namespace map of this element so that it may be serialized as a
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202 // standalone element without any prefixes with undefined namespace uris
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203 NPT_Result MakeStandalone();
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204
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205 // namespace methods
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206 const NPT_String* GetNamespace() const;
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207 NPT_Result SetNamespaceUri(const char* prefix, const char* uri);
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208 const NPT_String* GetNamespaceUri(const char* prefix) const;
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209 const NPT_String* GetNamespacePrefix(const char* uri) const;
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210
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211 // type casting
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212 NPT_XmlElementNode* AsElementNode() { return this; }
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213 const NPT_XmlElementNode* AsElementNode() const { return this; }
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214
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215 protected:
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216 // methods
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217 void SetParent(NPT_XmlNode* parent);
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218 void SetNamespaceParent(NPT_XmlElementNode* parent);
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219 void RelinkNamespaceMaps();
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220
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221 NPT_Result AddAttribute(const char* name, const char* value);
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222
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223 // members
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224 NPT_String m_Prefix;
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225 NPT_String m_Tag;
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226 NPT_List<NPT_XmlNode*> m_Children;
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227 NPT_List<NPT_XmlAttribute*> m_Attributes;
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228 NPT_XmlNamespaceMap* m_NamespaceMap;
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229 NPT_XmlElementNode* m_NamespaceParent;
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230
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231 // friends
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232 friend class NPT_XmlTagFinder;
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233 friend class NPT_XmlSerializer;
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234 friend class NPT_XmlWriter;
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235 friend class NPT_XmlNodeWriter;
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236 friend class NPT_XmlNodeCanonicalWriter;
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237 friend class NPT_XmlParser;
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238 friend class NPT_XmlProcessor;
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239 friend class NPT_XmlNamespaceCollapser;
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240 };
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241
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242 /*----------------------------------------------------------------------
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243 | NPT_XmlTextNode
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244 +---------------------------------------------------------------------*/
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245 class NPT_XmlTextNode : public NPT_XmlNode
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246 {
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247 public:
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248 // types
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249 typedef enum {
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250 CHARACTER_DATA,
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251 IGNORABLE_WHITESPACE,
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252 CDATA_SECTION,
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253 ENTITY_REFERENCE,
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254 COMMENT
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255 } TokenType;
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256
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257 // constructor
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258 NPT_XmlTextNode(TokenType token_type, const char* text);
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259
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260 // methods
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261 const NPT_String& GetString() const { return m_Text; }
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262
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263 // type casting
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264 NPT_XmlTextNode* AsTextNode() { return this; }
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265 const NPT_XmlTextNode* AsTextNode() const { return this; }
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266
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267 private:
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268 // members
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269 TokenType m_TokenType;
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270 NPT_String m_Text;
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271 };
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272
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273 /*----------------------------------------------------------------------
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274 | NPT_XmlParser
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275 +---------------------------------------------------------------------*/
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276 class NPT_XmlParser
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277 {
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278 public:
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279 // methods
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280 NPT_XmlParser(bool keep_whitespace = true);
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281 virtual ~NPT_XmlParser();
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282 virtual NPT_Result Parse(const char* xml,
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283 NPT_XmlNode*& tree,
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284 bool incremental=false);
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285 virtual NPT_Result Parse(const char* xml,
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286 NPT_Size size,
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287 NPT_XmlNode*& tree,
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288 bool incremental=false);
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289 virtual NPT_Result Parse(NPT_InputStream& stream,
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290 NPT_XmlNode*& tree,
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291 bool incremental=false);
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292 virtual NPT_Result Parse(NPT_InputStream& stream,
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293 NPT_Size& size,
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294 NPT_XmlNode*& tree,
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295 bool incremental=false);
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296
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297 protected:
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298 // NPT_XmlHandler methods
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299 NPT_Result OnStartElement(const char* name);
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300 NPT_Result OnElementAttribute(const char* name, const char* value);
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301 NPT_Result OnEndElement(const char* name);
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302 NPT_Result OnCharacterData(const char* data, unsigned long size);
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303 void RemoveIgnorableWhitespace();
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304
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305 // members
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306 NPT_XmlProcessor* m_Processor;
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307 NPT_XmlElementNode* m_Tree;
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308 NPT_XmlElementNode* m_CurrentElement;
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309 bool m_KeepWhitespace;
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310
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311 // friends
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312 friend class NPT_XmlProcessor;
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313 };
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314
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315 /*----------------------------------------------------------------------
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316 | NPT_XmlSerializer
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317 +---------------------------------------------------------------------*/
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318 class NPT_XmlSerializer
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319 {
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320 public:
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321 // methods
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322 NPT_XmlSerializer(NPT_OutputStream* output,
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323 NPT_Cardinal indentation = 0,
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324 bool shrink_empty_elements = true);
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325 virtual ~NPT_XmlSerializer();
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326 virtual NPT_Result StartDocument();
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327 virtual NPT_Result EndDocument();
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328 virtual NPT_Result StartElement(const char* prefix, const char* name);
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329 virtual NPT_Result EndElement(const char* prefix, const char* name);
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330 virtual NPT_Result Attribute(const char* prefix, const char* name, const char* value);
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331 virtual NPT_Result Text(const char* text);
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332 virtual NPT_Result CdataSection(const char* data);
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333 virtual NPT_Result Comment(const char* comment);
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334
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335 protected:
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336 // methods
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337 void EscapeChar(unsigned char c, char* text);
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338 NPT_Result ProcessPending();
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339 NPT_Result OutputEscapedString(const char* text, bool attribute);
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340 void OutputIndentation(bool start);
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341
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342 // members
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343 NPT_OutputStream* m_Output;
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344 bool m_ElementPending;
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345 NPT_Cardinal m_Depth;
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346 NPT_Cardinal m_Indentation;
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347 NPT_String m_IndentationPrefix;
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348 bool m_ElementHasText;
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349 bool m_ShrinkEmptyElements;
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350 };
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351
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352 /*----------------------------------------------------------------------
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353 | NPT_XmlWriter
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354 +---------------------------------------------------------------------*/
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355 class NPT_XmlWriter
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356 {
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357 public:
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358 // constructor
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359 explicit NPT_XmlWriter(NPT_Cardinal indentation = 0) : m_Indentation(indentation) {}
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360
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361 // methods
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362 NPT_Result Serialize(NPT_XmlNode& node, NPT_OutputStream& stream);
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363
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364 private:
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365 // members
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366 NPT_Cardinal m_Indentation;
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367 };
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368
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369 /*----------------------------------------------------------------------
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370 | NPT_XmlCanonicalizer
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371 +---------------------------------------------------------------------*/
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372 class NPT_XmlCanonicalizer
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373 {
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374 public:
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375 // methods
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376 NPT_Result Serialize(NPT_XmlNode& node, NPT_OutputStream& stream);
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377 };
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378
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379 #endif // _NPT_XML_H_