1 | package org.greenstone.gatherer.util;
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2 |
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3 | import java.io.*;
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4 | import java.net.*;
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5 | import java.util.*;
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6 | import org.apache.xerces.parsers.*;
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7 | import org.apache.xml.serialize.*;
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8 | import org.greenstone.gatherer.DebugStream;
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9 | import org.w3c.dom.*;
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10 | import org.xml.sax.*;
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11 |
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12 | import java.io.FileReader;
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13 | import java.io.IOException;
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14 | import java.io.StringReader;
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15 |
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16 | // SAX
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17 | import org.xml.sax.XMLReader;
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18 | import org.xml.sax.SAXException;
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19 | import org.xml.sax.SAXParseException;
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20 | import org.xml.sax.helpers.DefaultHandler;
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21 | import org.xml.sax.InputSource;
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22 |
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23 | // JAXP
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24 | import javax.xml.parsers.FactoryConfigurationError;
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25 | import javax.xml.parsers.ParserConfigurationException;
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26 | import javax.xml.parsers.SAXParser;
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27 | import javax.xml.parsers.SAXParserFactory;
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28 |
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29 | /** This class is a static class containing useful XML functions */
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30 | public class XMLTools
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31 | {
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32 | /** extracts the text out of a node */
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33 | public static Node getNodeTextNode(Element param)
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34 | {
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35 | param.normalize();
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36 | Node n = param.getFirstChild();
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37 | while (n != null && n.getNodeType() != Node.TEXT_NODE)
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38 | {
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39 | n = n.getNextSibling();
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40 | }
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41 | return n;
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42 | }
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43 |
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44 | /** extracts the text out of a node */
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45 | public static String getNodeText(Element param)
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46 | {
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47 | Node text_node = getNodeTextNode(param);
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48 | if (text_node == null)
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49 | {
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50 | return "";
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51 | }
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52 | return text_node.getNodeValue();
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53 | }
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54 |
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55 | public static void setNodeText(Element elem, String text)
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56 | {
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57 | Node old_text_node = getNodeTextNode(elem);
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58 | if (old_text_node != null)
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59 | {
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60 | elem.removeChild(old_text_node);
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61 | }
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62 | Text t = elem.getOwnerDocument().createTextNode(text);
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63 | elem.appendChild(t);
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64 | }
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65 |
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66 | /** returns the (first) child element with the given name */
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67 | public static Node getChildByTagName(Node n, String name)
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68 | {
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69 |
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70 | Node child = n.getFirstChild();
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71 | while (child != null)
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72 | {
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73 | if (child.getNodeName().equals(name))
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74 | {
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75 | return child;
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76 | }
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77 | child = child.getNextSibling();
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78 | }
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79 | return null; //not found
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80 | }
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81 |
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82 | /**
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83 | * returns the (nth) child element with the given name index numbers start
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84 | * at 0
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85 | */
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86 | public static Node getChildByTagNameIndexed(Node n, String name, int index)
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87 | {
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88 | if (index == -1)
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89 | {
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90 | return getChildByTagName(n, name);
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91 | }
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92 | int count = 0;
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93 | Node child = n.getFirstChild();
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94 | while (child != null)
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95 | {
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96 | if (child.getNodeName().equals(name))
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97 | {
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98 | if (count == index)
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99 | {
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100 | return child;
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101 | }
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102 | else
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103 | {
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104 | count++;
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105 | }
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106 | }
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107 | child = child.getNextSibling();
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108 | }
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109 | return null; //not found
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110 | }
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111 |
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112 | /**
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113 | * returns the element parent/node_name[@attribute_name='attribute_value']
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114 | */
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115 | public static Element getNamedElement(Element parent, String node_name, String attribute_name, String attribute_value)
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116 | {
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117 |
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118 | NodeList children = parent.getChildNodes();
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119 | for (int i = 0; i < children.getLength(); i++)
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120 | {
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121 | Node child = children.item(i);
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122 | //logger.debug("getnamed elem, node nmae="+child.getNodeName());
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123 | if (child.getNodeName().equals(node_name))
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124 | {
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125 | if (((Element) child).getAttribute(attribute_name).equals(attribute_value))
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126 | return (Element) child;
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127 | }
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128 | }
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129 | // not found
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130 | return null;
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131 | }
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132 |
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133 | /**
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134 | * returns a list of elements
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135 | * parent/node_name[@attribute_name='attribute_value']
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136 | */
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137 | public static ArrayList getNamedElementList(Element parent, String node_name, String attribute_name, String attribute_value)
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138 | {
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139 | ArrayList elements = new ArrayList();
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140 | NodeList children = parent.getChildNodes();
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141 | for (int i = 0; i < children.getLength(); i++)
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142 | {
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143 | //System.out.println("getNamedElementList");
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144 | Node child = children.item(i);
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145 | //logger.debug("getnamed elem, node nmae="+child.getNodeName());
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146 | if (child.getNodeName().equals(node_name))
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147 | {
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148 | if (((Element) child).getAttribute(attribute_name).equals(attribute_value))
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149 | elements.add((Element) child);
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150 | }
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151 | }
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152 | // not found
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153 | if (elements.size() == 0)
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154 | {
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155 | elements = null;
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156 | }
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157 | return elements;
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158 | }
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159 |
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160 | public static void copyAllChildren(Element to, Element from)
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161 | {
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162 |
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163 | Document to_doc = to.getOwnerDocument();
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164 | Node child = from.getFirstChild();
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165 | while (child != null)
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166 | {
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167 | to.appendChild(to_doc.importNode(child, true));
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168 | child = child.getNextSibling();
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169 | }
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170 | }
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171 |
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172 | /** Duplicates an element */
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173 | public static Element duplicateElement(Document owner, Element element, boolean with_attributes)
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174 | {
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175 | return duplicateElementNS(owner, element, null, with_attributes);
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176 | }
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177 |
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178 | /** Duplicates an element */
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179 | public static Element duplicateElementNS(Document owner, Element element, String namespace_uri, boolean with_attributes)
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180 | {
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181 | Element duplicate;
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182 | if (namespace_uri == null)
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183 | {
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184 | duplicate = owner.createElement(element.getTagName());
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185 | }
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186 | else
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187 | {
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188 | duplicate = owner.createElementNS(namespace_uri, element.getTagName());
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189 | }
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190 | // Copy element attributes
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191 | if (with_attributes)
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192 | {
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193 | NamedNodeMap attributes = element.getAttributes();
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194 | for (int i = 0; i < attributes.getLength(); i++)
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195 | {
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196 | Node attribute = attributes.item(i);
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197 | duplicate.setAttribute(attribute.getNodeName(), attribute.getNodeValue());
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198 | }
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199 | }
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200 |
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201 | // Copy element children
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202 | NodeList children = element.getChildNodes();
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203 | for (int i = 0; i < children.getLength(); i++)
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204 | {
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205 | Node child = children.item(i);
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206 | duplicate.appendChild(owner.importNode(child, true));
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207 | }
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208 |
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209 | return duplicate;
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210 | }
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211 |
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212 | /** Remove all of the child nodes from a certain node. */
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213 | static final public void clear(Node node)
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214 | {
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215 | while (node.hasChildNodes())
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216 | {
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217 | node.removeChild(node.getFirstChild());
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218 | }
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219 | }
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220 |
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221 | static public ArrayList getChildElementsByTagName(Element parent_element, String element_name)
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222 | {
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223 | ArrayList child_elements = new ArrayList();
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224 |
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225 | NodeList children_nodelist = parent_element.getChildNodes();
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226 | for (int i = 0; i < children_nodelist.getLength(); i++)
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227 | {
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228 | Node child_node = children_nodelist.item(i);
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229 | if (child_node.getNodeType() == Node.ELEMENT_NODE && child_node.getNodeName().equals(element_name))
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230 | {
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231 | child_elements.add(child_node);
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232 | }
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233 | }
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234 |
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235 | return child_elements;
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236 | }
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237 |
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238 | static public String getElementTextValue(Element element)
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239 | {
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240 | // Find the first text node child
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241 | NodeList children_nodelist = element.getChildNodes();
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242 | for (int i = 0; i < children_nodelist.getLength(); i++)
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243 | {
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244 | Node child_node = children_nodelist.item(i);
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245 | if (child_node.getNodeType() == Node.TEXT_NODE)
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246 | {
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247 | return child_node.getNodeValue();
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248 | }
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249 | }
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250 |
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251 | // None found
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252 | return "";
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253 | }
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254 |
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255 | /**
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256 | * Method to retrieve the value of a given node.
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257 | *
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258 | * @param element
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259 | * The <strong>Element</strong> whose value we wish to find. Soon
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260 | * to be deprecated!
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261 | */
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262 | static final public String getValue(Node element)
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263 | {
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264 | if (element == null)
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265 | {
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266 | return "";
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267 | }
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268 | // If we've been given a subject node first retrieve its value node.
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269 | if (element.getNodeName().equals("Subject"))
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270 | {
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271 | element = getNodeFromNamed(element, "Value");
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272 | }
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273 | // If we've got a value node, then reconstruct the text. Remember that DOM will split text over 256 characters into several text nodes
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274 | if (element != null && element.hasChildNodes())
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275 | {
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276 | StringBuffer text_buffer = new StringBuffer();
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277 | NodeList text_nodes = element.getChildNodes();
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278 | for (int i = 0; i < text_nodes.getLength(); i++)
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279 | {
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280 | Node possible_text = text_nodes.item(i);
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281 | if (possible_text.getNodeName().equals(StaticStrings.TEXT_NODE))
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282 | {
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283 | text_buffer.append(possible_text.getNodeValue());
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284 | }
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285 | }
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286 | return text_buffer.toString();
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287 | }
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288 | return "";
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289 | }
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290 |
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291 | /**
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292 | * Method to retrieve from the node given, a certain child node with the
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293 | * specified name.
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294 | *
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295 | * @param parent
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296 | * The <strong>Node</strong> whose children should be searched.
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297 | * @param name
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298 | * The required nodes name as a <strong>String</strong>.
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299 | * @return The requested <strong>Node</strong> if it is found, <i>null</i>
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300 | * otherwise. Soon to be deprecated!
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301 | */
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302 | static final public Node getNodeFromNamed(Node parent, String name)
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303 | {
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304 | Node child = null;
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305 | for (Node i = parent.getFirstChild(); i != null && child == null; i = i.getNextSibling())
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306 | {
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307 | if (i.getNodeName().equals(name))
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308 | {
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309 | child = i;
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310 | }
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311 | }
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312 | return child;
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313 | }
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314 |
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315 | static final public String WELLFORMED = "well-formed !";
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316 | static final public String NOTWELLFORMED = "not well-formed";
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317 | static final private String HEADER = "<?xml version='1.0' encoding='UTF-8'?><collectionConfig xmlns:gsf='http://www.greenstone.org/greenstone3/schema/ConfigFormat' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>";
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318 | static final private String FOOTER = "</collectionConfig>";
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319 |
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320 | public static String parse(String xml_str)
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321 | {
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322 | String validation_msg = WELLFORMED;
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323 | xml_str = HEADER + xml_str + FOOTER;
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324 | try
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325 | {
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326 | SAXParserFactory factory = SAXParserFactory.newInstance();
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327 | factory.setNamespaceAware(true);
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328 | //factory.setValidating (true);
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329 | SAXParser parser = factory.newSAXParser();
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330 | InputSource iSource = new InputSource(new StringReader(xml_str));
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331 | // parser.parse (iSource, new DefaultHandler ());
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332 |
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333 | org.xml.sax.XMLReader reader = parser.getXMLReader();
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334 | reader.setContentHandler(new DefaultHandler());
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335 | reader.setErrorHandler(new DefaultHandler());
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336 | reader.parse(iSource);
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337 | }
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338 | catch (FactoryConfigurationError e)
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339 | {
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340 | validation_msg = "unable to get a document builder factory";
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341 | }
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342 | catch (ParserConfigurationException e)
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343 | {
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344 | validation_msg = "unable to configure parser";
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345 | }
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346 | catch (SAXParseException e)
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347 | {
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348 | validation_msg = NOTWELLFORMED + getLocationString(e) + e.getMessage();
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349 | }
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350 | catch (SAXException e)
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351 | {
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352 | validation_msg += " Fatal error: " + e.toString();
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353 | }
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354 | catch (IOException e)
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355 | {
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356 | validation_msg = "Unable to read the input, i/o error";
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357 | }
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358 |
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359 | return validation_msg;
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360 | }
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361 |
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362 | //In this method, the parsed string xml_str is not wrapped by the header and footer strings.
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363 | public static String parseDOM(String xml_str)
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364 | {
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365 | String validation_msg = WELLFORMED;
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366 |
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367 | try
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368 | {
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369 | SAXParserFactory factory = SAXParserFactory.newInstance();
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370 | factory.setNamespaceAware(true);
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371 | //factory.setValidating (true);
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372 | SAXParser parser = factory.newSAXParser();
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373 | InputSource iSource = new InputSource(new StringReader(xml_str));
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374 | // parser.parse (iSource, new DefaultHandler ());
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375 |
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376 | org.xml.sax.XMLReader reader = parser.getXMLReader();
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377 | reader.setContentHandler(new DefaultHandler());
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378 | reader.setErrorHandler(new DefaultHandler());
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379 | reader.parse(iSource);
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380 | }
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381 | catch (FactoryConfigurationError e)
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382 | {
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383 | validation_msg = "unable to get a document builder factory";
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384 | }
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385 | catch (ParserConfigurationException e)
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386 | {
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387 | validation_msg = "unable to configure parser";
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388 | }
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389 | catch (SAXParseException e)
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390 | {
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391 | validation_msg = NOTWELLFORMED + getLocationString(e) + e.getMessage();
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392 | }
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393 | catch (SAXException e)
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394 | {
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395 | validation_msg += " " + e.toString();
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396 | }
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397 | catch (IOException e)
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398 | {
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399 | validation_msg = "Unable to read the input, i/o error";
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400 | }
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401 |
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402 | return validation_msg;
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403 | }
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404 |
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405 | public static String parse(File xml_file)
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406 | {
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407 | String validation_msg = WELLFORMED;
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408 |
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409 | try
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410 | {
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411 | SAXParserFactory factory = SAXParserFactory.newInstance();
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412 | factory.setNamespaceAware(true);
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413 | //factory.setValidating (true);
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414 | SAXParser parser = factory.newSAXParser();
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415 | FileReader r = new FileReader(xml_file);
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416 | InputSource iSource = new InputSource(r);
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417 | XMLReader reader = parser.getXMLReader();
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418 | reader.setContentHandler(new DefaultHandler());
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419 | reader.setErrorHandler(new DefaultHandler());
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420 | reader.parse(iSource);
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421 | }
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422 | catch (FactoryConfigurationError e)
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423 | {
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424 | validation_msg = "unable to get a document builder factory";
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425 | }
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426 | catch (ParserConfigurationException e)
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427 | {
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428 | validation_msg = "unable to configure parser";
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429 | }
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430 | catch (SAXParseException e)
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431 | {
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432 | validation_msg = NOTWELLFORMED + getLocationString(e) + e.getMessage();
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433 | }
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434 | catch (SAXException e)
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435 | {
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436 | validation_msg += " Fatal error: " + e.toString();
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437 | }
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438 | catch (IOException e)
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439 | {
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440 | validation_msg = "Unable to read the input, i/o error";
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441 | }
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442 |
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443 | return validation_msg;
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444 | }
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445 |
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446 | /** Returns a string of the location. */
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447 | private static String getLocationString(SAXParseException ex)
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448 | {
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449 | StringBuffer str = new StringBuffer();
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450 |
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451 | String systemId = ex.getSystemId();
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452 | if (systemId != null)
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453 | {
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454 | int index = systemId.lastIndexOf('/');
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455 | if (index != -1)
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456 | systemId = systemId.substring(index + 1);
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457 | str.append(systemId);
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458 | }
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459 | str.append("(line ");
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460 | str.append(ex.getLineNumber() - 1);
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461 | str.append(", column ");
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462 | str.append(ex.getColumnNumber());
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463 | str.append("): ");
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464 |
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465 | return str.toString();
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466 |
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467 | } // getLocationString(SAXParseException):String
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468 |
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469 | /** Parse an XML document from a given file path */
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470 | static public Document parseXMLFile(String xml_file_path, boolean use_class_loader)
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471 | {
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472 | if (use_class_loader == true)
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473 | {
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474 | InputStream is = JarTools.getResourceAsStream("/" + xml_file_path);
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475 | if (is != null)
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476 | {
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477 | return parseXML(is);
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478 | }
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479 | }
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480 |
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481 | // Try the file outside the classes directory
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482 | return parseXMLFile(new File(xml_file_path));
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483 | }
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484 |
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485 | /** Parse an XML document from a given file */
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486 | static public Document parseXMLFile(File xml_file)
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487 | {
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488 | // No file? No point trying!
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489 | if (xml_file.exists() == false)
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490 | {
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491 | return null;
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492 | }
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493 |
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494 | try
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495 | {
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496 | return parseXML(new FileInputStream(xml_file));
|
---|
497 | }
|
---|
498 | catch (Exception exception)
|
---|
499 | {
|
---|
500 | DebugStream.printStackTrace(exception);
|
---|
501 | return null;
|
---|
502 | }
|
---|
503 | }
|
---|
504 |
|
---|
505 | /** Parse an XML document from a given input stream */
|
---|
506 | static public Document parseXML(InputStream xml_input_stream)
|
---|
507 | {
|
---|
508 | Document document = null;
|
---|
509 |
|
---|
510 | try
|
---|
511 | {
|
---|
512 | InputStreamReader isr = new InputStreamReader(xml_input_stream, "UTF-8");
|
---|
513 | document = parseXML(isr);
|
---|
514 | isr.close();
|
---|
515 | xml_input_stream.close();
|
---|
516 | }
|
---|
517 | catch (Exception exception)
|
---|
518 | {
|
---|
519 | DebugStream.printStackTrace(exception);
|
---|
520 | }
|
---|
521 |
|
---|
522 | return document;
|
---|
523 | }
|
---|
524 |
|
---|
525 | /** Parse an XML document from a given reader */
|
---|
526 | static public Document parseXML(Reader xml_reader)
|
---|
527 | {
|
---|
528 | Document document = null;
|
---|
529 |
|
---|
530 | // If debugging, the following will store the XML contents to be parsed,
|
---|
531 | // which can then be inspected upon encountering a SAXException (need to run GLI with -debug on)
|
---|
532 | String xmlContents = "";
|
---|
533 |
|
---|
534 | try
|
---|
535 | {
|
---|
536 | Reader reader = null;
|
---|
537 |
|
---|
538 | // (1) By default, GLI will remove any contents preceeding (and invalidating)
|
---|
539 | // the XML and present these lines separately to the user
|
---|
540 | if (!DebugStream.isDebuggingEnabled())
|
---|
541 | {
|
---|
542 | try
|
---|
543 | {
|
---|
544 | reader = new BufferedReader(new RemoveContentBeforeRootElementXMLReader(xml_reader));
|
---|
545 | }
|
---|
546 | catch (Exception e)
|
---|
547 | {
|
---|
548 | System.err.println("Exception while wrapping the reader in parseXML(Reader)");
|
---|
549 | e.printStackTrace();
|
---|
550 | }
|
---|
551 | }
|
---|
552 |
|
---|
553 | // (2) If we are running GLI in debug mode:
|
---|
554 | // In case parsing exceptions are thrown (SAX Exceptions), we want to get some
|
---|
555 | // idea of where things went wrong. This will print the "XML" contents to either
|
---|
556 | // system.out (if debugging is off) or to the DebugStream otherwise.
|
---|
557 | // We need to read the XML twice to know the line where things went wrong, so
|
---|
558 | // do the additional reading only if we're debugging
|
---|
559 | else
|
---|
560 | {
|
---|
561 | StringBuffer buf = new StringBuffer();
|
---|
562 | char[] buffer = new char[500];
|
---|
563 | int numCharsRead = xml_reader.read(buffer, 0, buffer.length);
|
---|
564 | while (numCharsRead != -1)
|
---|
565 | {
|
---|
566 | buf.append(buffer, 0, numCharsRead);
|
---|
567 | numCharsRead = xml_reader.read(buffer, 0, buffer.length);
|
---|
568 | }
|
---|
569 | xmlContents = buf.toString();
|
---|
570 | xml_reader.close(); // closing the old Reader
|
---|
571 | xml_reader = null;
|
---|
572 | buffer = null;
|
---|
573 | buf = null;
|
---|
574 | // we need a Reader to parse the same contents as the Reader that was just closed
|
---|
575 | reader = new BufferedReader(new StringReader(xmlContents));
|
---|
576 | //System.err.println("xmlContents:\n" + xmlContents);
|
---|
577 | }
|
---|
578 |
|
---|
579 | // (2) The actual XML parsing
|
---|
580 | InputSource isc = new InputSource(reader);
|
---|
581 | DOMParser parser = new DOMParser();
|
---|
582 | parser.setFeature("http://xml.org/sax/features/validation", false);
|
---|
583 | parser.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
|
---|
584 | // May or may not be ignored, the documentation for Xerces is contradictory. If it works then parsing -should- be faster.
|
---|
585 | parser.setFeature("http://apache.org/xml/features/dom/defer-node-expansion", true);
|
---|
586 | parser.setFeature("http://apache.org/xml/features/dom/include-ignorable-whitespace", false);
|
---|
587 | parser.parse(isc);
|
---|
588 | document = parser.getDocument();
|
---|
589 |
|
---|
590 | }
|
---|
591 | catch (SAXParseException e)
|
---|
592 | {
|
---|
593 | showXMLParseFailureLine(e, xmlContents);
|
---|
594 | }
|
---|
595 | catch (SAXException exception)
|
---|
596 | {
|
---|
597 | System.err.println("SAX exception: " + exception.getMessage());
|
---|
598 | if (DebugStream.isDebuggingEnabled())
|
---|
599 | {
|
---|
600 | DebugStream.println("Encountered a SAX exception when parsing the following:\n*********START\n" + xmlContents + "\n************END\n");
|
---|
601 | // Exit to let the user view the erroneous line/xml before it goes past the screen buffer?
|
---|
602 | DebugStream.println("Debug mode: Exiting the program as there was trouble parsing the XML...");
|
---|
603 | System.exit(-1);
|
---|
604 | }
|
---|
605 | // else, not running in debug mode, so don't exit after exception
|
---|
606 | System.out.println("***Turn debugging on (run GLI with -debug) to view the XML contents that could not be parsed.");
|
---|
607 | DebugStream.printStackTrace(exception);
|
---|
608 | }
|
---|
609 | catch (Exception exception)
|
---|
610 | {
|
---|
611 | DebugStream.printStackTrace(exception);
|
---|
612 | }
|
---|
613 |
|
---|
614 | return document;
|
---|
615 | }
|
---|
616 |
|
---|
617 | /**
|
---|
618 | * Displays the line (string) where the SAXParseException occurred, given a
|
---|
619 | * String of the entire xml that was being parsed and the SAXParseException
|
---|
620 | * object that was caught. The messages are printed to DebugStream, so run
|
---|
621 | * GLI/FLI with -debug to view this output.
|
---|
622 | *
|
---|
623 | * @param xmlContents
|
---|
624 | * is the entire xml that was being parsed when the exception
|
---|
625 | * occurred
|
---|
626 | * @param e
|
---|
627 | * is the SAXParseException object that was thrown upon parsing
|
---|
628 | * the xmlContents.
|
---|
629 | */
|
---|
630 | public static void showXMLParseFailureLine(SAXParseException e, String xmlContents)
|
---|
631 | {
|
---|
632 |
|
---|
633 | // There should be no characters at all that preceed the <?xml>... bit.
|
---|
634 | // The first check is for starting spaces:
|
---|
635 | if (xmlContents.startsWith("\n") || xmlContents.startsWith(" ") || xmlContents.startsWith("\t"))
|
---|
636 | {
|
---|
637 | DebugStream.println("ERROR: illegal start of XML. Space/tab/newline should not preceed xml declaration.\n");
|
---|
638 | DebugStream.println("xmlContents (length is " + xmlContents.length() + "):\n" + xmlContents);
|
---|
639 | return; // nothing more to do, first error identified
|
---|
640 | }
|
---|
641 |
|
---|
642 | // the actual line (String literal) where parsing failed and the SAXParseException occurred.
|
---|
643 | String line = "";
|
---|
644 | int linenumber = e.getLineNumber();
|
---|
645 | DebugStream.print("\n****SAXParseException on LINE NUMBER: " + linenumber);
|
---|
646 | if (DebugStream.isDebuggingEnabled())
|
---|
647 | {
|
---|
648 | if (linenumber != -1)
|
---|
649 | {
|
---|
650 | String[] lines = xmlContents.split("\n");
|
---|
651 | if (lines.length > 0)
|
---|
652 | {
|
---|
653 | DebugStream.println(" (number of lines: " + lines.length + ")");
|
---|
654 | if (lines.length >= linenumber)
|
---|
655 | {
|
---|
656 | line = lines[linenumber - 1];
|
---|
657 | }
|
---|
658 | else
|
---|
659 | { // error is past the last line
|
---|
660 | line = "Error is past the last line (" + lines.length + "): " + lines[lines.length - 1];
|
---|
661 | }
|
---|
662 | }
|
---|
663 | else
|
---|
664 | {
|
---|
665 | DebugStream.print("\n");
|
---|
666 | }
|
---|
667 | lines = null;
|
---|
668 |
|
---|
669 | DebugStream.println("The parsing error occurred on this line:\n***********START\n" + line + "\n***********END");
|
---|
670 | DebugStream.println("SAXParseException message: " + e.getMessage() + "\n");
|
---|
671 |
|
---|
672 | // Uncomment if you want to print out the entire contents of the XML doc:
|
---|
673 | //DebugStream.println("\n\nThis was the XML:\n*********START\n"
|
---|
674 | // + xmlContents + "\n************END\n");
|
---|
675 | }
|
---|
676 | else
|
---|
677 | { // no particular line number, print out all the xml so debugger can inspect it
|
---|
678 | DebugStream.println("Encountered a SAX exception when parsing the following:\n*********START\n" + xmlContents + "\n************END\n");
|
---|
679 | }
|
---|
680 | // Exit to let the user view the erroneous line/xml before it goes past the screen buffer?
|
---|
681 | DebugStream.println("\nDebug mode: Exiting the program as there was trouble parsing the XML...");
|
---|
682 | System.exit(-1);
|
---|
683 | }
|
---|
684 | else
|
---|
685 | { // not running in debug mode
|
---|
686 | System.out.println("***Turn debugging on (run GLI with -debug) to view the XML contents/line that could not be parsed.");
|
---|
687 | }
|
---|
688 | }
|
---|
689 |
|
---|
690 | static public StringBuffer readXMLStream(InputStream input_stream)
|
---|
691 | {
|
---|
692 | StringBuffer xml = new StringBuffer("");
|
---|
693 |
|
---|
694 | try
|
---|
695 | {
|
---|
696 | InputStreamReader isr = new InputStreamReader(input_stream, "UTF-8");
|
---|
697 | BufferedReader buffered_in = new BufferedReader(isr);
|
---|
698 |
|
---|
699 | String line = "";
|
---|
700 | boolean xml_content = false;
|
---|
701 | while ((line = buffered_in.readLine()) != null)
|
---|
702 | {
|
---|
703 | if (xml_content)
|
---|
704 | {
|
---|
705 | xml.append(line);
|
---|
706 | xml.append("\n");
|
---|
707 | }
|
---|
708 | else if (line.trim().startsWith("<?xml"))
|
---|
709 | {
|
---|
710 | xml_content = true;
|
---|
711 | xml.append(line);
|
---|
712 | xml.append("\n");
|
---|
713 | }
|
---|
714 | else
|
---|
715 | {
|
---|
716 | System.err.println(line);
|
---|
717 | }
|
---|
718 | }
|
---|
719 | buffered_in = null;
|
---|
720 | }
|
---|
721 | catch (Exception error)
|
---|
722 | {
|
---|
723 | System.err.println("Failed when trying to parse XML stream");
|
---|
724 | error.printStackTrace();
|
---|
725 | }
|
---|
726 |
|
---|
727 | return xml;
|
---|
728 | }
|
---|
729 |
|
---|
730 | /**
|
---|
731 | * Removes characters that are invalid in XML (see
|
---|
732 | * http://www.w3.org/TR/2000/REC-xml-20001006#charsets)
|
---|
733 | */
|
---|
734 | static public String removeInvalidCharacters(String text)
|
---|
735 | {
|
---|
736 | char[] safe_characters = new char[text.length()];
|
---|
737 | int j = 0;
|
---|
738 |
|
---|
739 | char[] raw_characters = new char[text.length()];
|
---|
740 | text.getChars(0, text.length(), raw_characters, 0);
|
---|
741 | for (int i = 0; i < raw_characters.length; i++)
|
---|
742 | {
|
---|
743 | char character = raw_characters[i];
|
---|
744 | if ((character >= 0x20 && character <= 0xD7FF) || character == 0x09 || character == 0x0A || character == 0x0D || (character >= 0xE000 && character <= 0xFFFD) || (character >= 0x10000 && character <= 0x10FFFF))
|
---|
745 | {
|
---|
746 | safe_characters[j] = character;
|
---|
747 | j++;
|
---|
748 | }
|
---|
749 | }
|
---|
750 |
|
---|
751 | return new String(safe_characters, 0, j);
|
---|
752 | }
|
---|
753 |
|
---|
754 | static public void setElementTextValue(Element element, String text)
|
---|
755 | {
|
---|
756 | // Remove all text node children
|
---|
757 | NodeList children_nodelist = element.getChildNodes();
|
---|
758 | for (int i = children_nodelist.getLength() - 1; i >= 0; i--)
|
---|
759 | {
|
---|
760 | Node child_node = children_nodelist.item(i);
|
---|
761 | if (child_node.getNodeType() == Node.TEXT_NODE)
|
---|
762 | {
|
---|
763 | element.removeChild(child_node);
|
---|
764 | }
|
---|
765 | }
|
---|
766 |
|
---|
767 | // Add a new text node
|
---|
768 | if (text != null)
|
---|
769 | {
|
---|
770 | element.appendChild(element.getOwnerDocument().createTextNode(text));
|
---|
771 | }
|
---|
772 | }
|
---|
773 |
|
---|
774 | /**
|
---|
775 | * Set the #text node value of some element.
|
---|
776 | *
|
---|
777 | * @param element
|
---|
778 | * the Element whose value we wish to set
|
---|
779 | * @param value
|
---|
780 | * the new value for the element as a String Soon to be
|
---|
781 | * deprecated!
|
---|
782 | */
|
---|
783 | static final public void setValue(Element element, String value)
|
---|
784 | {
|
---|
785 | // Remove any existing child node(s)
|
---|
786 | clear(element);
|
---|
787 | // Add new text node.
|
---|
788 | if (value != null)
|
---|
789 | {
|
---|
790 | element.appendChild(element.getOwnerDocument().createTextNode(value));
|
---|
791 | }
|
---|
792 | }
|
---|
793 |
|
---|
794 | static public void indentXML(Element elem, int depth)
|
---|
795 | {
|
---|
796 | Document doc = elem.getOwnerDocument();
|
---|
797 |
|
---|
798 | String startIndentString = "\n";
|
---|
799 | for (int i = 0; i < depth; i++)
|
---|
800 | {
|
---|
801 | startIndentString += "\t";
|
---|
802 | }
|
---|
803 | Node startTextNode = doc.createTextNode(startIndentString);
|
---|
804 |
|
---|
805 | String endIndentString = "\n";
|
---|
806 | for (int i = 0; i < depth - 1; i++)
|
---|
807 | {
|
---|
808 | endIndentString += "\t";
|
---|
809 | }
|
---|
810 | Node endTextNode = doc.createTextNode(endIndentString);
|
---|
811 |
|
---|
812 | boolean found = false;
|
---|
813 | Node child = elem.getFirstChild();
|
---|
814 | while (child != null)
|
---|
815 | {
|
---|
816 | if (child.getNodeType() == Node.ELEMENT_NODE)
|
---|
817 | {
|
---|
818 | found = true;
|
---|
819 | break;
|
---|
820 | }
|
---|
821 | child = child.getNextSibling();
|
---|
822 | }
|
---|
823 |
|
---|
824 | if (found)
|
---|
825 | {
|
---|
826 | elem.appendChild(endTextNode);
|
---|
827 | }
|
---|
828 |
|
---|
829 | child = elem.getFirstChild();
|
---|
830 | while (child != null)
|
---|
831 | {
|
---|
832 | if (child.getNodeType() == Node.ELEMENT_NODE)
|
---|
833 | {
|
---|
834 | elem.insertBefore(startTextNode.cloneNode(false), child);
|
---|
835 | indentXML((Element) child, depth + 1);
|
---|
836 | }
|
---|
837 | child = child.getNextSibling();
|
---|
838 | }
|
---|
839 | }
|
---|
840 |
|
---|
841 | /**
|
---|
842 | * Write an XML document to a given file with the text node of the specified
|
---|
843 | * element unescaped
|
---|
844 | */
|
---|
845 | static public void writeXMLFile(File xml_file, Document document, String[] nonEscapingTagNames)
|
---|
846 | {
|
---|
847 | indentXML(document.getDocumentElement(), 1);
|
---|
848 | try
|
---|
849 | {
|
---|
850 | OutputStream os = new FileOutputStream(xml_file);
|
---|
851 | // Create an output format for our document.
|
---|
852 | OutputFormat f = new OutputFormat(document);
|
---|
853 | f.setEncoding("UTF-8");
|
---|
854 | f.setIndenting(true);
|
---|
855 | f.setLineWidth(0); // Why isn't this working!
|
---|
856 | f.setPreserveSpace(true);
|
---|
857 | if (nonEscapingTagNames != null)
|
---|
858 | {
|
---|
859 | f.setNonEscapingElements(nonEscapingTagNames);
|
---|
860 | }
|
---|
861 | // Create the necessary writer stream for serialization.
|
---|
862 | OutputStreamWriter osw = new OutputStreamWriter(os, "UTF-8");
|
---|
863 | Writer w = new BufferedWriter(osw);
|
---|
864 | // Generate a new serializer from the above.
|
---|
865 | XMLSerializer s = new XMLSerializer(w, f);
|
---|
866 | s.asDOMSerializer();
|
---|
867 | // Finally serialize the document to file.
|
---|
868 | s.serialize(document);
|
---|
869 | // And close.
|
---|
870 | os.close();
|
---|
871 | }
|
---|
872 | catch (Exception exception)
|
---|
873 | {
|
---|
874 | DebugStream.printStackTrace(exception);
|
---|
875 | }
|
---|
876 | }
|
---|
877 |
|
---|
878 | /** Write an XML document to a given file */
|
---|
879 | static public void writeXMLFile(File xml_file, Document document)
|
---|
880 | {
|
---|
881 | writeXMLFile(xml_file, document, null);
|
---|
882 | }
|
---|
883 |
|
---|
884 | public static void printXMLNode(Node e)
|
---|
885 | {
|
---|
886 | printXMLNode(e, 0);
|
---|
887 | }
|
---|
888 |
|
---|
889 | public static void printXMLNode(Node e, int depth)
|
---|
890 | { //recursive method call using DOM API...
|
---|
891 |
|
---|
892 | for (int i = 0; i < depth; i++)
|
---|
893 | System.out.print(' ');
|
---|
894 |
|
---|
895 | if (e.getNodeType() == Node.TEXT_NODE)
|
---|
896 | {
|
---|
897 | //System.out.println("text") ;
|
---|
898 | if (e.getNodeValue() != "")
|
---|
899 | {
|
---|
900 | System.out.println(e.getNodeValue());
|
---|
901 | }
|
---|
902 | return;
|
---|
903 | }
|
---|
904 |
|
---|
905 | System.out.print('<');
|
---|
906 | System.out.print(e.getNodeName());
|
---|
907 | NamedNodeMap attrs = e.getAttributes();
|
---|
908 | if (attrs != null)
|
---|
909 | {
|
---|
910 | for (int i = 0; i < attrs.getLength(); i++)
|
---|
911 | {
|
---|
912 | Node attr = attrs.item(i);
|
---|
913 | System.out.print(' ');
|
---|
914 | System.out.print(attr.getNodeName());
|
---|
915 | System.out.print("=\"");
|
---|
916 | System.out.print(attr.getNodeValue());
|
---|
917 | System.out.print('"');
|
---|
918 | }
|
---|
919 | }
|
---|
920 | NodeList children = e.getChildNodes();
|
---|
921 |
|
---|
922 | if (children == null || children.getLength() == 0)
|
---|
923 | System.out.println("/>");
|
---|
924 | else
|
---|
925 | {
|
---|
926 |
|
---|
927 | System.out.println('>');
|
---|
928 |
|
---|
929 | int len = children.getLength();
|
---|
930 | for (int i = 0; i < len; i++)
|
---|
931 | {
|
---|
932 | printXMLNode(children.item(i), depth + 1);
|
---|
933 | }
|
---|
934 |
|
---|
935 | for (int i = 0; i < depth; i++)
|
---|
936 | System.out.print(' ');
|
---|
937 |
|
---|
938 | System.out.println("</" + e.getNodeName() + ">");
|
---|
939 | }
|
---|
940 |
|
---|
941 | }
|
---|
942 |
|
---|
943 | public static String xmlNodeToString(Node e)
|
---|
944 | {
|
---|
945 | StringBuffer sb = new StringBuffer("");
|
---|
946 | xmlNodeToString(sb, e, true, "\t", 2);
|
---|
947 | return sb.toString();
|
---|
948 | }
|
---|
949 |
|
---|
950 | public static void xmlNodeToString(StringBuffer sb, Node e, boolean indent, String indentString, int depth)
|
---|
951 | {
|
---|
952 | if (e.getNodeType() == Node.TEXT_NODE)
|
---|
953 | {
|
---|
954 | if (e.getNodeValue() != "")
|
---|
955 | {
|
---|
956 | String text = e.getNodeValue();
|
---|
957 | text = text.replaceAll("&", "&").replaceAll("<", "<").replaceAll(">", ">").replaceAll("^[\\n\\r\\t\\s]*", "");
|
---|
958 | sb.append(text);
|
---|
959 | }
|
---|
960 | return;
|
---|
961 | }
|
---|
962 |
|
---|
963 | if (e.getNodeType() == Node.COMMENT_NODE)
|
---|
964 | {
|
---|
965 | if (e.getNodeValue() != "")
|
---|
966 | {
|
---|
967 | sb.append("<!--" + e.getNodeValue() + "-->");
|
---|
968 | }
|
---|
969 | return;
|
---|
970 | }
|
---|
971 |
|
---|
972 | if (indent)
|
---|
973 | {
|
---|
974 | for (int i = 0; i < depth; i++)
|
---|
975 | {
|
---|
976 | sb.append(indentString);
|
---|
977 | }
|
---|
978 | }
|
---|
979 |
|
---|
980 | sb.append('<');
|
---|
981 | sb.append(e.getNodeName());
|
---|
982 | NamedNodeMap attrs = e.getAttributes();
|
---|
983 | if (attrs != null)
|
---|
984 | {
|
---|
985 | for (int i = 0; i < attrs.getLength(); i++)
|
---|
986 | {
|
---|
987 | Node attr = attrs.item(i);
|
---|
988 | sb.append(' ');
|
---|
989 | sb.append(attr.getNodeName());
|
---|
990 | sb.append("=\"");
|
---|
991 | sb.append(attr.getNodeValue().replaceAll("&", "&").replaceAll("<", "<").replaceAll(">", ">"));
|
---|
992 | sb.append('"');
|
---|
993 | }
|
---|
994 | }
|
---|
995 | NodeList children = e.getChildNodes();
|
---|
996 |
|
---|
997 | boolean hasElements = false;
|
---|
998 | boolean indentSwapped = false;
|
---|
999 | for (int i = 0; i < children.getLength(); i++)
|
---|
1000 | {
|
---|
1001 | if (children.item(i).getNodeType() == Node.ELEMENT_NODE)
|
---|
1002 | {
|
---|
1003 | hasElements = true;
|
---|
1004 | }
|
---|
1005 | if (children.item(i).getNodeType() == Node.TEXT_NODE && indent)
|
---|
1006 | {
|
---|
1007 | if (children.item(i).getNodeValue().matches("[^\\s]*"))
|
---|
1008 | {
|
---|
1009 | indentSwapped = true;
|
---|
1010 | indent = false;
|
---|
1011 | }
|
---|
1012 | }
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 | if (children == null || children.getLength() == 0)
|
---|
1016 | {
|
---|
1017 | sb.append("/>");
|
---|
1018 |
|
---|
1019 | if (indent)
|
---|
1020 | {
|
---|
1021 | sb.append("\n");
|
---|
1022 | }
|
---|
1023 | }
|
---|
1024 | else
|
---|
1025 | {
|
---|
1026 | sb.append(">");
|
---|
1027 | if (hasElements && indent)
|
---|
1028 | {
|
---|
1029 | sb.append("\n");
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | int len = children.getLength();
|
---|
1033 | for (int i = 0; i < len; i++)
|
---|
1034 | {
|
---|
1035 | xmlNodeToString(sb, children.item(i), indent, indentString, depth + 1);
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | if (indent)
|
---|
1039 | {
|
---|
1040 | for (int i = 0; i < depth; i++)
|
---|
1041 | {
|
---|
1042 | sb.append(indentString);
|
---|
1043 | }
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | sb.append("</" + e.getNodeName() + ">");
|
---|
1047 |
|
---|
1048 | if ((hasElements && indent) || indentSwapped)
|
---|
1049 | {
|
---|
1050 | sb.append("\n");
|
---|
1051 | }
|
---|
1052 | }
|
---|
1053 | }
|
---|
1054 |
|
---|
1055 | public static String xmlNodeToStringWithoutIndenting(Node e)
|
---|
1056 | {
|
---|
1057 | StringBuffer sb = new StringBuffer("");
|
---|
1058 | xmlNodeToStringWithoutNewline(sb, e, -1);
|
---|
1059 | return sb.toString();
|
---|
1060 | }
|
---|
1061 |
|
---|
1062 | public static String xmlNodeToStringWithoutNewline(Node e)
|
---|
1063 | {
|
---|
1064 | StringBuffer sb = new StringBuffer("");
|
---|
1065 | xmlNodeToStringWithoutNewline(sb, e, 0);
|
---|
1066 | return sb.toString();
|
---|
1067 | }
|
---|
1068 |
|
---|
1069 | private static void xmlNodeToStringWithoutNewline(StringBuffer sb, Node e, int depth)
|
---|
1070 | {
|
---|
1071 |
|
---|
1072 | for (int i = 0; i < depth; i++)
|
---|
1073 | {
|
---|
1074 | sb.append(' ');
|
---|
1075 | }
|
---|
1076 |
|
---|
1077 | if (e.getNodeType() == Node.TEXT_NODE)
|
---|
1078 | {
|
---|
1079 | if (e.getNodeValue() != "")
|
---|
1080 | {
|
---|
1081 | sb.append(e.getNodeValue().replaceAll("&", "&").replaceAll("<", "<").replace(">", ">"));
|
---|
1082 | }
|
---|
1083 | return;
|
---|
1084 | }
|
---|
1085 |
|
---|
1086 | if (e.getNodeType() == Node.COMMENT_NODE)
|
---|
1087 | {
|
---|
1088 | if (e.getNodeValue() != "")
|
---|
1089 | {
|
---|
1090 | sb.append("<!--" + e.getNodeValue() + "-->");
|
---|
1091 | }
|
---|
1092 | return;
|
---|
1093 | }
|
---|
1094 |
|
---|
1095 | sb.append('<');
|
---|
1096 | sb.append(e.getNodeName());
|
---|
1097 | NamedNodeMap attrs = e.getAttributes();
|
---|
1098 | if (attrs != null)
|
---|
1099 | {
|
---|
1100 | for (int i = 0; i < attrs.getLength(); i++)
|
---|
1101 | {
|
---|
1102 | Node attr = attrs.item(i);
|
---|
1103 | sb.append(' ');
|
---|
1104 | sb.append(attr.getNodeName());
|
---|
1105 | sb.append("=\"");
|
---|
1106 | sb.append(attr.getNodeValue());
|
---|
1107 | sb.append('"');
|
---|
1108 | }
|
---|
1109 | }
|
---|
1110 | NodeList children = e.getChildNodes();
|
---|
1111 |
|
---|
1112 | if (children == null || children.getLength() == 0)
|
---|
1113 | sb.append("/>");
|
---|
1114 | else
|
---|
1115 | {
|
---|
1116 |
|
---|
1117 | sb.append(">");
|
---|
1118 |
|
---|
1119 | int len = children.getLength();
|
---|
1120 | for (int i = 0; i < len; i++)
|
---|
1121 | {
|
---|
1122 | if (depth >= 0)
|
---|
1123 | {
|
---|
1124 | xmlNodeToStringWithoutNewline(sb, children.item(i), depth + 1);
|
---|
1125 | }
|
---|
1126 | else
|
---|
1127 | {
|
---|
1128 | xmlNodeToStringWithoutNewline(sb, children.item(i), depth);
|
---|
1129 | }
|
---|
1130 | }
|
---|
1131 |
|
---|
1132 | for (int i = 0; i < depth; i++)
|
---|
1133 | sb.append(' ');
|
---|
1134 |
|
---|
1135 | sb.append("</" + e.getNodeName() + ">");
|
---|
1136 | }
|
---|
1137 | }
|
---|
1138 | }
|
---|