1 | /*
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2 | * GSXSLT.java
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3 | * Copyright (C) 2008 New Zealand Digital Library, http://www.nzdl.org
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4 | *
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5 | * This program is free software; you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation; either version 2 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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18 | */
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19 | package org.greenstone.gsdl3.util;
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20 |
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21 | import java.io.File;
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22 | import java.util.ArrayList;
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23 | import java.util.Vector;
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24 |
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25 | import org.greenstone.util.GlobalProperties;
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26 | import org.w3c.dom.Document;
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27 | import org.w3c.dom.Element;
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28 | import org.w3c.dom.Node;
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29 | import org.w3c.dom.NodeList;
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30 |
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31 | import org.apache.log4j.*;
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32 |
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33 | /** various functions for manipulating Greenstone xslt */
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34 | public class GSXSLT
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35 | {
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36 |
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37 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.util.GSXSLT.class.getName());
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38 |
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39 | public static void mergeStylesheets(Document main_xsl, Element extra_xsl, boolean overwrite)
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40 | {
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41 | mergeStylesheetsDebug(main_xsl, extra_xsl, overwrite, false, null, null);
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42 | }
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43 |
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44 | /**
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45 | * takes a stylesheet Document, and adds in any child nodes from extra_xsl
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46 | * named templates overwrite any existing one, while match templates are
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47 | * just added to the end of the stylesheet
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48 | *
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49 | * elements are added in following order, and added to preserve original
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50 | * order with imported ones coming after existing ones import, include,
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51 | * output, variable, template
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52 | */
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53 | public static void mergeStylesheetsDebug(Document main_xsl, Element extra_xsl, boolean overwrite, boolean debug, String firstDocFileName, String secondDocFileName)
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54 | {
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55 | if (debug)
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56 | {
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57 | System.err.println("ADDING DEBUG ELEMENTS WITH FILE NAME " + firstDocFileName);
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58 | insertDebugElements(main_xsl, firstDocFileName);
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59 | }
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60 |
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61 | Element main = main_xsl.getDocumentElement();
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62 | Node insertion_point = null;
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63 | Element last_import = GSXML.getLastElementByTagNameNS(main, "http://www.w3.org/1999/XSL/Transform", "import");
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64 | if (last_import != null)
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65 | {
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66 | insertion_point = last_import.getNextSibling();
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67 | }
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68 | else
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69 | {
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70 | insertion_point = main.getFirstChild();
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71 | }
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72 |
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73 | // imports
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74 | NodeList children = extra_xsl.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "import");
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75 | for (int i = 0; i < children.getLength(); i++)
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76 | {
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77 | Element node = (Element) children.item(i);
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78 | // If the new xsl:import element is identical (in terms of href attr value)
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79 | // to any in the merged document, don't copy it over
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80 | if (GSXML.getNamedElementNS(main, "http://www.w3.org/1999/XSL/Transform", "import", "href", node.getAttribute("href")) == null)
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81 | {
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82 | // Import statements should be the first children of an xsl:stylesheet element
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83 | // If firstchild is null, then this xsl:import element will be inserted at the "end"
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84 | // Although Node.insertBefore() will first remove identical nodes before inserting, we check
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85 | // only the href attribute to see if they're "identical" to any pre-existing <xsl:import>
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86 | //main.insertBefore(main_xsl.importNode(node, true), main.getFirstChild());
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87 | main.insertBefore(main_xsl.importNode(node, true), insertion_point);
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88 | }
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89 | }
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90 |
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91 | // do we have a new insertion point??
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92 | Element last_include = GSXML.getLastElementByTagNameNS(main, "http://www.w3.org/1999/XSL/Transform", "include");
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93 | if (last_include != null)
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94 | {
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95 | insertion_point = last_include.getNextSibling();
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96 | }
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97 |
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98 | // includes
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99 | children = extra_xsl.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "include");
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100 | for (int i = 0; i < children.getLength(); i++)
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101 | {
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102 | Element node = (Element) children.item(i);
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103 | // If the new xsl:include element is identical (in terms of href attr value)
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104 | // to any in the merged document, don't copy it over
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105 | // Although Node.appendChild() will first remove identical nodes before appending, we check
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106 | // only the href attribute to see if they're "identical" to any pre-existing <xsl:include>
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107 | if (GSXML.getNamedElementNS(main, "http://www.w3.org/1999/XSL/Transform", "include", "href", node.getAttribute("href")) == null)
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108 | {
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109 | //main.appendChild(main_xsl.importNode(node, true));
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110 | main.insertBefore(main_xsl.importNode(node, true), insertion_point);
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111 | }
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112 | } // for each include
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113 |
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114 | if (main.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "output").getLength() == 0)
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115 | {
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116 | // outputs
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117 | children = extra_xsl.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "output");
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118 | for (int i = 0; i < children.getLength(); i++)
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119 | {
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120 | Element node = (Element) children.item(i);
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121 | // If the new xsl:output element is identical (in terms of the value for the method attr)
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122 | // to any in the merged document, don't copy it over
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123 |
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124 | main.insertBefore(main_xsl.importNode(node, true), insertion_point);
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125 | }
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126 | }
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127 |
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128 | // variables - only top level ones!!
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129 | // append to end of document
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130 | children = GSXML.getChildrenByTagNameNS(extra_xsl, "http://www.w3.org/1999/XSL/Transform", "variable");
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131 | for (int i = 0; i < children.getLength(); i++)
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132 | {
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133 | Element node = (Element) children.item(i);
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134 | // If the new xsl:import element is identical (in terms of href attr value)
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135 | // to any in the merged document, don't copy it over
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136 | if (GSXML.getNamedElementNS(main, "http://www.w3.org/1999/XSL/Transform", "variable", "name", node.getAttribute("name")) == null)
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137 | {
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138 | main.appendChild(main_xsl.importNode(node, true));
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139 | }
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140 | }
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141 |
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142 | // params - only top level ones!!
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143 | // append to end of document
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144 | children = GSXML.getChildrenByTagNameNS(extra_xsl, "http://www.w3.org/1999/XSL/Transform", "param");
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145 | for (int i = 0; i < children.getLength(); i++)
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146 | {
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147 | Element node = (Element) children.item(i);
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148 | // If the new xsl:import element is identical (in terms of href attr value)
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149 | // to any in the merged document, don't copy it over
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150 | if (GSXML.getNamedElementNS(main, "http://www.w3.org/1999/XSL/Transform", "param", "name", node.getAttribute("name")) == null)
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151 | {
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152 | main.appendChild(main_xsl.importNode(node, true));
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153 | }
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154 | }
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155 |
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156 | // templates
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157 | // append to end of document
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158 | children = extra_xsl.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "template");
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159 | for (int i = 0; i < children.getLength(); i++)
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160 | {
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161 | Element node = (Element) children.item(i);
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162 | // remove any previous occurrences of xsl:template with the same value for name or match
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163 | String template_match = node.getAttribute("match");
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164 | String template_name = node.getAttribute("name");
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165 | String template_mode = node.getAttribute("mode");
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166 |
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167 | if (overwrite)
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168 | {
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169 | // if we have a name attribute, remove any other similarly named template
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170 | GSXML.removeElementsWithAttributesNS(main, "http://www.w3.org/1999/XSL/Transform", "template", new String[] { "name", "match", "mode" }, new String[] { template_name, template_match, template_mode });
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171 |
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172 | // now add our good template in
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173 | main.appendChild(main_xsl.importNode(node, true));
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174 | }
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175 | else
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176 | {
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177 | // if overwrite is false, then we only add in templates if they don't match something else.
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178 | // In this case (eg from expanding imported stylesheets)
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179 | // there can't be any duplicate named templates, so just look for matches
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180 | // we already have the one with highest import precedence (from the top most level) so don't add any more in
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181 | if (GSXML.getElementsWithAttributesNS(main, "http://www.w3.org/1999/XSL/Transform", "template", new String[] { "name", "match", "mode" }, new String[] { template_name, template_match, template_mode }).getLength() == 0)
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182 | {
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183 | main.appendChild(main_xsl.importNode(node, true));
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184 | }
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185 | }
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186 | }
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187 |
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188 | if (debug)
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189 | {
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190 | System.err.println("ADDING DEBUG ELEMENTS WITH FILE NAME " + secondDocFileName);
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191 | insertDebugElements(main_xsl, secondDocFileName);
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192 | }
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193 | }
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194 |
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195 | protected static void insertDebugElements(Document doc, String fileName)
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196 | {
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197 | NodeList htmlTags = GSXML.getHTMLStructureElements(doc);
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198 | System.err.println("HTML TAGS SIZE IS " + htmlTags.getLength());
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199 | for (int i = 0; i < htmlTags.getLength(); i++)
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200 | {
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201 | Element current = (Element) htmlTags.item(i);
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202 | if (current.getUserData("GSDEBUGFILENAME") == null)
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203 | {
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204 | Element xslParent = (Element) current.getParentNode();
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205 |
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206 | while (xslParent.getNamespaceURI() != "http://www.w3.org/1999/XSL/Transform" && !xslParent.getNodeName().startsWith("xsl:"))
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207 | {
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208 | xslParent = (Element) xslParent.getParentNode();
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209 | }
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210 |
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211 | System.err.println("ADDING FILE NAME " + fileName);
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212 | current.setUserData("GSDEBUGFILENAME", fileName, null);
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213 | current.setUserData("GSDEBUGXML", xslParent.cloneNode(true), null);
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214 | }
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215 | else
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216 | {
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217 | System.err.println("ALREADY SET!");
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218 | }
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219 | }
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220 | }
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221 |
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222 | public static void inlineImportAndIncludeFiles(Document doc, String pathExtra, String interface_name)
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223 | {
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224 | inlineImportAndIncludeFilesDebug(doc, pathExtra, false, null, interface_name);
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225 | }
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226 |
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227 | public static void inlineImportAndIncludeFilesDebug(Document doc, String pathExtra, boolean debug, String docFileName, String interface_name)
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228 | {
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229 | XMLConverter converter = new XMLConverter();
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230 |
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231 | String path = (pathExtra == null) ? "" : pathExtra;
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232 |
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233 | NodeList importList = doc.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "import");
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234 | NodeList includeList = doc.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "include");
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235 |
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236 | for (int i = 0; i < importList.getLength() + includeList.getLength(); i++)
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237 | {
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238 | Element current = (Element) ((i < importList.getLength()) ? importList.item(i) : includeList.item(i - importList.getLength()));
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239 | String href = current.getAttribute("href");
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240 | String filePath = GSFile.interfaceHome(GlobalProperties.getGSDL3Home(), interface_name) + File.separator + "transform" + File.separator + path.replace("/", File.separator) + href.replace("/", File.separator);
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241 | //String filePath = GSFile.stylesheetFile(GlobalProperties.getGSDL3Home(), site_name, collection, interface_name, base_interfaces,
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242 |
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243 | try
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244 | {
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245 | Document inlineDoc = converter.getDOM(new File(filePath), "UTF-8");
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246 |
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247 | String newPath = path;
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248 | int lastSepIndex = href.lastIndexOf("/");
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249 | if (lastSepIndex != -1)
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250 | {
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251 | newPath += href.substring(0, lastSepIndex + 1);
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252 | }
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253 |
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254 | //Do this recursively
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255 | inlineImportAndIncludeFilesDebug(inlineDoc, newPath, debug, filePath, interface_name);
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256 |
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257 | GSXSLT.mergeStylesheetsDebug(doc, inlineDoc.getDocumentElement(), false, debug, docFileName, filePath);
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258 | }
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259 | catch (Exception ex)
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260 | {
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261 | ex.printStackTrace();
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262 | return;
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263 | }
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264 | }
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265 |
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266 | while (importList.getLength() > 0)
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267 | {
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268 | Element importElem = (Element) importList.item(0);
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269 | importElem.getParentNode().removeChild(importElem);
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270 | }
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271 | while (includeList.getLength() > 0)
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272 | {
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273 | Element includeElem = (Element) includeList.item(0);
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274 | includeElem.getParentNode().removeChild(includeElem);
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275 | }
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276 | }
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277 |
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278 | public static Document mergedXSLTDocumentCascade(String xslt_filename, String site, String collection, String this_interface, ArrayList<String> base_interfaces, boolean debug) {
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279 | XMLConverter converter = new XMLConverter();
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280 | // find the list of stylesheets with this name
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281 | ArrayList<File> stylesheets = GSFile.getStylesheetFiles(GlobalProperties.getGSDL3Home(), site, collection, this_interface, base_interfaces, xslt_filename);
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282 | if (stylesheets.size() == 0)
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283 | {
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284 | logger.error(" Can't find stylesheet for " + xslt_filename);
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285 | return null;
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286 | }
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287 | logger.debug("Stylesheet: " + xslt_filename);
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288 |
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289 | Document finalDoc = converter.getDOM(stylesheets.get(stylesheets.size() - 1), "UTF-8");
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290 | if (finalDoc == null)
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291 | {
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292 | return null;
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293 | }
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294 |
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295 | for (int i = stylesheets.size() - 2; i >= 0; i--)
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296 | {
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297 | Document currentDoc = converter.getDOM(stylesheets.get(i), "UTF-8");
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298 | if (currentDoc == null)
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299 | {
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300 | return null;
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301 | }
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302 |
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303 | if (debug)
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304 | {
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305 | GSXSLT.mergeStylesheetsDebug(finalDoc, currentDoc.getDocumentElement(), true, true, stylesheets.get(stylesheets.size() - 1).getAbsolutePath(), stylesheets.get(i).getAbsolutePath());
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306 | }
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307 | else
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308 | {
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309 | GSXSLT.mergeStylesheets(finalDoc, currentDoc.getDocumentElement(), true);
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310 | }
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311 | }
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312 |
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313 | return finalDoc;
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314 | }
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315 |
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316 |
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317 |
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318 | public static void modifyConfigFormatForDebug(Document doc, String fileName)
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319 | {
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320 | NodeList templateNodes = doc.getElementsByTagNameNS("http://www.w3.org/1999/XSL/Transform", "template");
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321 | if (templateNodes.getLength() == 0)
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322 | {
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323 | templateNodes = doc.getElementsByTagName("xsl:template");
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324 | }
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325 |
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326 | String debugElementString = "";
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327 | debugElementString += "<span class=\"configDebugSpan\" style=\"display:none;\">";
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328 | debugElementString += " \"filename\":\"" + fileName + "\",";
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329 | debugElementString += " \"xml\":\"<xsl:value-of select=\"util:xmlNodeToString(.)\"/>\""; //<xsl:copy><xsl:copy-of select=\"@*\"/></xsl:copy>
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330 | debugElementString += "</span>";
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331 |
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332 | XMLConverter converter = new XMLConverter();
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333 | Element debugElement = (Element) converter.getDOM("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<xslt:stylesheet version=\"1.0\" xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" xmlns:xslt=\"output.xsl\" xmlns:gsf=\"http://www.greenstone.org/greenstone3/schema/ConfigFormat\">" + debugElementString + "</xslt:stylesheet>").getDocumentElement().getFirstChild();
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334 |
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335 | for (int i = 0; i < templateNodes.getLength(); i++)
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336 | {
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337 | Element currentTemplate = (Element) templateNodes.item(i);
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338 | if (currentTemplate.getAttribute("match") != null && (currentTemplate.getAttribute("match").equals("gsf:metadata") || currentTemplate.getAttribute("match").equals("*") || currentTemplate.getAttribute("match").equals("format")))
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339 | {
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340 | continue;
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341 | }
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342 |
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343 | if (currentTemplate.hasChildNodes())
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344 | {
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345 | currentTemplate.insertBefore(doc.importNode(debugElement.cloneNode(true), true), currentTemplate.getFirstChild());
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346 | }
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347 | else
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348 | {
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349 | currentTemplate.appendChild(doc.importNode(debugElement.cloneNode(true), true));
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350 | }
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351 | }
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352 | }
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353 |
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354 | /**
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355 | * takes any import or include nodes, and creates absolute path names for
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356 | * the files
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357 | */
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358 | public static void absoluteIncludePaths(Document stylesheet, String gsdl3_home, String site_name, String collection, String interface_name, ArrayList<String> base_interfaces)
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359 | {
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360 | Element base_node = stylesheet.getDocumentElement();
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361 | if (base_node == null)
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362 | {
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363 | return;
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364 | }
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365 | Node child = base_node.getFirstChild();
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366 | while (child != null)
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367 | {
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368 | String name = child.getNodeName();
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369 | if (name.equals("xsl:import") || name.equals("xsl:include"))
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370 | {
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371 | ((Element) child).setAttribute("href", GSFile.stylesheetFile(gsdl3_home, site_name, collection, interface_name, base_interfaces, ((Element) child).getAttribute("href")));
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372 | }
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373 | child = child.getNextSibling();
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374 | }
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375 | }
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376 |
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377 | /**
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378 | * looks through a stylesheet for <xxx:template match='template_name'>
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379 | * inside this template it looks for any <xxx:value-of
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380 | * select='metadataList/metadata[@name=yyy]> elements, and extracts the
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381 | * metadata names into a Vector
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382 | */
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383 | public static Vector<String> extractWantedMetadata(Document stylesheet, String template_name)
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384 | {
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385 |
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386 | Vector<String> metadata = new Vector<String>();
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387 | Element base_node = stylesheet.getDocumentElement();
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388 | NodeList templates = base_node.getElementsByTagNameNS("*", "template");
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389 | for (int i = 0; i < templates.getLength(); i++)
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390 | {
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391 | Element template = (Element) templates.item(i);
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392 | String match_name = template.getAttribute("match");
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393 | if (!match_name.equals(template_name))
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394 | {
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395 | continue; // we're only looking for specific templates
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396 | }
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397 | String mode = template.getAttribute("mode");
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398 | if (!mode.equals(""))
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399 | {
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400 | continue; // we only want ones without modes - these are processing ones, not display ones
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401 | }
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402 | // we have one that we want to look through
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403 | NodeList values = template.getElementsByTagNameNS("*", "value-of");
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404 | for (int v = 0; v < values.getLength(); v++)
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405 | {
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406 | String select = ((Element) values.item(v)).getAttribute("select");
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407 | if (select.startsWith("metadataList/metadata[@name="))
|
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408 | {
|
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409 | String[] bits = select.split("'|\"");
|
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410 | // there should be two quotes in teh string, therefore 3 items, and the second one is teh one we want
|
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411 | String name = bits[1];
|
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412 | metadata.add(name);
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413 | }
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414 | }
|
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415 | }
|
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416 | return metadata;
|
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417 | }
|
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418 |
|
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419 | public static void mergeFormatElements(Element mainFormat, Element secondaryFormat, boolean overwrite)
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420 | {
|
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421 | NodeList xslChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.w3.org/1999/XSL/Transform", "variable");
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422 | NodeList gsfChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "variable");
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423 | for (int i = 0; i < xslChildren.getLength() + gsfChildren.getLength(); i++)
|
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424 | {
|
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425 | Element node = (Element) ((i < xslChildren.getLength()) ? xslChildren.item(i) : gsfChildren.item(i - xslChildren.getLength()));
|
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426 | if (GSXML.getNamedElementNS(mainFormat, "http://www.w3.org/1999/XSL/Transform", "variable", "name", node.getAttribute("name")) == null && GSXML.getNamedElementNS(mainFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "variable", "name", node.getAttribute("name")) == null)
|
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427 | {
|
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428 | mainFormat.appendChild(node);
|
---|
429 | }
|
---|
430 | }
|
---|
431 |
|
---|
432 | xslChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.w3.org/1999/XSL/Transform", "param");
|
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433 | gsfChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "param");
|
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434 | for (int i = 0; i < xslChildren.getLength() + gsfChildren.getLength(); i++)
|
---|
435 | {
|
---|
436 | Element node = (Element) ((i < xslChildren.getLength()) ? xslChildren.item(i) : gsfChildren.item(i - xslChildren.getLength()));
|
---|
437 | if (GSXML.getNamedElementNS(mainFormat, "http://www.w3.org/1999/XSL/Transform", "param", "name", node.getAttribute("name")) == null && GSXML.getNamedElementNS(mainFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "param", "name", node.getAttribute("name")) == null)
|
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438 | {
|
---|
439 | mainFormat.appendChild(node);
|
---|
440 | }
|
---|
441 | }
|
---|
442 |
|
---|
443 | xslChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.w3.org/1999/XSL/Transform", "template");
|
---|
444 | gsfChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "template");
|
---|
445 | for (int i = 0; i < xslChildren.getLength() + gsfChildren.getLength(); i++)
|
---|
446 | {
|
---|
447 | Element node = (Element) ((i < xslChildren.getLength()) ? xslChildren.item(i) : gsfChildren.item(i - xslChildren.getLength()));
|
---|
448 | // remove any previous occurrences of xsl:template with the same value for name or match
|
---|
449 | String template_match = node.getAttribute("match");
|
---|
450 | String template_name = node.getAttribute("name");
|
---|
451 | String template_mode = node.getAttribute("mode");
|
---|
452 |
|
---|
453 | String[] attributeNames = new String[] { "name", "match", "mode" };
|
---|
454 | String[] attributeValues = new String[] { template_name, template_match, template_mode };
|
---|
455 |
|
---|
456 | if (overwrite)
|
---|
457 | {
|
---|
458 | // if we have a name attribute, remove any other similarly named template
|
---|
459 | GSXML.removeElementsWithAttributesNS(mainFormat, "http://www.w3.org/1999/XSL/Transform", "template", attributeNames, attributeValues);
|
---|
460 | GSXML.removeElementsWithAttributesNS(mainFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "template", attributeNames, attributeValues);
|
---|
461 |
|
---|
462 | // now add our good template in
|
---|
463 | mainFormat.appendChild(node);
|
---|
464 | }
|
---|
465 | else
|
---|
466 | {
|
---|
467 | // if overwrite is false, then we only add in templates if they don't match something else.
|
---|
468 | // In this case (eg from expanding imported stylesheets)
|
---|
469 | // there can't be any duplicate named templates, so just look for matches
|
---|
470 | // we already have the one with highest import precedence (from the top most level) so don't add any more in
|
---|
471 | if (GSXML.getElementsWithAttributesNS(mainFormat, "http://www.w3.org/1999/XSL/Transform", "template", attributeNames, attributeValues).getLength() == 0 && GSXML.getElementsWithAttributesNS(mainFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "template", attributeNames, attributeValues).getLength() == 0)
|
---|
472 | {
|
---|
473 | mainFormat.appendChild(node);
|
---|
474 | }
|
---|
475 | }
|
---|
476 | }
|
---|
477 |
|
---|
478 | gsfChildren = GSXML.getChildrenByTagNameNS(secondaryFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "option");
|
---|
479 | for (int i = 0; i < gsfChildren.getLength(); i++)
|
---|
480 | {
|
---|
481 | Element node = (Element) gsfChildren.item(i);
|
---|
482 | if (GSXML.getNamedElementNS(mainFormat, "http://www.greenstone.org/greenstone3/schema/ConfigFormat", "option", "name", node.getAttribute("name")) == null)
|
---|
483 | {
|
---|
484 | mainFormat.appendChild(node);
|
---|
485 | }
|
---|
486 | }
|
---|
487 | }
|
---|
488 | }
|
---|