1 | /**
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2 | *#########################################################################
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3 | *
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4 | * A component of the Gatherer application, part of the Greenstone digital
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5 | * library suite from the New Zealand Digital Library Project at the
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6 | * University of Waikato, New Zealand.
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7 | *
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8 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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9 | *
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10 | * Copyright (C) 1999 New Zealand Digital Library Project
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11 | *
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12 | * This program is free software; you can redistribute it and/or modify
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13 | * it under the terms of the GNU General Public License as published by
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14 | * the Free Software Foundation; either version 2 of the License, or
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15 | * (at your option) any later version.
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16 | *
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17 | * This program is distributed in the hope that it will be useful,
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | * GNU General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, write to the Free Software
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24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | *########################################################################
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26 | */
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27 | package org.greenstone.gatherer.file;
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28 |
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29 | import java.io.*;
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30 | import java.util.regex.*;
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31 | import javax.swing.table.*;
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32 | import org.greenstone.gatherer.Gatherer;
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33 | import org.greenstone.gatherer.Configuration;
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34 | import org.greenstone.gatherer.DebugStream;
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35 | import org.greenstone.gatherer.Dictionary;
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36 | import org.greenstone.gatherer.gui.FileAssociationDialog;
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37 | import org.greenstone.gatherer.gui.PreviewCommandDialog;
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38 | import org.greenstone.gatherer.util.SafeProcess;
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39 | import org.greenstone.gatherer.util.StaticStrings;
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40 | import org.greenstone.gatherer.util.Utility;
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41 | import org.greenstone.gatherer.util.XMLTools;
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42 | import org.w3c.dom.*;
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43 |
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44 | public class FileAssociationManager
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45 | extends AbstractTableModel {
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46 | static final public String FILENAME_ARG = "%1";
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47 | static final private String ESCAPE = "\\\\"; // '\'
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48 | static final private String ESCAPED_ESCAPE = "\\\\\\\\"; // '\\'
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49 | static final private String SPACE = " ";
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50 | static final private String ESCAPED_SPACE = "\\\\ ";
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51 | private Element associations_element;
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52 | private File data_file;
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53 |
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54 | public FileAssociationManager() {
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55 | // Retrieve the associations_element from the config
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56 | associations_element = Configuration.getFileAssociations();
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57 | // Initialize the associations. This involves looking through all current associations searching for those with a command of "".
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58 | if(associations_element != null) {
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59 | NodeList entries = associations_element.getElementsByTagName(StaticStrings.ENTRY_ELEMENT);
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60 | for(int i = 0; i < entries.getLength(); i++) {
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61 | Element entry = (Element) entries.item(i);
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62 | String command = XMLTools.getValue(entry);
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63 | // If we encounter a command of ""...
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64 | if(command.length() == 0) {
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65 | // if we are on windows, we default to the start command
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66 | if(Utility.isWindows()) {
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67 | if (Utility.isWindows9x()) {
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68 | XMLTools.setValue(entry, StaticStrings.WIN_9X_OPEN_COMMAND);
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69 | } else {
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70 | XMLTools.setValue(entry, StaticStrings.WIN_OPEN_COMMAND);
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71 | }
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72 | }
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73 | // and if we are on mac, we default to the open program
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74 | else if(Utility.isMac()) {
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75 | XMLTools.setValue(entry, StaticStrings.MAC_OPEN_COMMAND);
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76 | }
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77 | else { // On Linux, we need to discover which of a range of possible solutions
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78 | // works on this machine. If any works, we remember and use that choice
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79 | // for all file extensions for which no file association has been set yet.
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80 |
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81 | // If we worked out the default linux file open command in a previous
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82 | // round of the FileAssociationManager loop, use it for the current file
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83 | // extension also
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84 |
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85 | if(StaticStrings.LINUX_OPEN_COMMAND != null &&
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86 | !StaticStrings.LINUX_OPEN_COMMAND.equals("")) {
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87 |
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88 | XMLTools.setValue(entry, StaticStrings.LINUX_OPEN_COMMAND);
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89 | } else if(StaticStrings.LINUX_OPEN_COMMAND == null) {
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90 | // StaticStrings.LINUX_OPEN_COMMAND not set yet: if we never tried to
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91 | // work out the default linux file launch command yet, then we'll now
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92 | // test whether any known linux open command is available on this linux.
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93 |
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94 | // xdg-open comes pre-installed on Ubuntu linux, but not on all linux
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95 | // https://www.cyberciti.biz/faq/unix-linux-command-to-view-file/
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96 | // Listing xdg-open 1st as it works on Ubuntu, reducing GLI load time
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97 | final String[] linux_open_cmds = {"xdg-open", "kde-open", "gnome-open"};
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98 |
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99 | for(String open_cmd : linux_open_cmds) {
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100 | Gatherer.ProgramInstalledTest installTest = new Gatherer.ProgramInstalledTest(open_cmd);
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101 | if(installTest.found()) {
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102 | System.err.println("*********** Linux file open command " + installTest + " was found to be installed.");
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103 | StaticStrings.LINUX_OPEN_COMMAND = open_cmd + " %1";
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104 | XMLTools.setValue(entry, StaticStrings.LINUX_OPEN_COMMAND);
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105 | break;
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106 | } else {
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107 | System.err.println("*********** Linux file open command " + installTest + " was not installed.");
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108 | }
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109 | }
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110 |
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111 | // either we have a default linux open command or not
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112 | // If we don't, set it to empty, so we don't try working out
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113 | // the linux open command value for each file extension (for
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114 | // each iteration of the FileAssociationManager loop) hereafter.
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115 | if(StaticStrings.LINUX_OPEN_COMMAND == null) {
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116 | StaticStrings.LINUX_OPEN_COMMAND = "";
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117 | }
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118 | }
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119 | // else StaticStrings.LINUX_OPEN_COMMAND = ""; which means at some point
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120 | // we'd tried but failed to work out a feasible file open command for this linux
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121 | }
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122 | }
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123 | command = null;
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124 | entry = null;
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125 | }
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126 | entries = null;
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127 | }
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128 | else {
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129 | DebugStream.println("Didn't parse anything. About to crash.");
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130 | }
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131 | }
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132 |
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133 | public void edit() {
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134 | FileAssociationDialog dialog = new FileAssociationDialog(this);
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135 | dialog.display(null);
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136 | dialog = null;
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137 | }
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138 |
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139 | public String getBrowserCommand(String url) {
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140 | DebugStream.println("Get browser command: " + url);
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141 | // First off we try to retrieve one from the configuration
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142 | String command = Configuration.getPreviewCommand();
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143 | // If that worked, substitute in the url and return
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144 | if(command != null && command.length() > 0) {
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145 | command = command.replaceAll("%1", url);
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146 | DebugStream.println("Result = " + command);
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147 | return command;
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148 | }
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149 | command = null;
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150 | // Failing that we have a guess at a sensible default
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151 | if(Utility.isWindows()) {
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152 | // we use cmd and start
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153 | if (Utility.isWindows9x()) {
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154 | command = StaticStrings.WIN_9X_OPEN_COMMAND;//"command.com /c start \""+url+"\"";
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155 | } else {
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156 | command = StaticStrings.WIN_OPEN_COMMAND;//"cmd.exe /c start \"\" \""+url+"\"";
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157 | }
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158 | } else if (Utility.isMac()) {
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159 | command = StaticStrings.MAC_OPEN_COMMAND; // "open %1"
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160 | } else {
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161 | // we try to look for a browser
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162 | String [] browsers = new String [] {"mozilla", "netscape", "firefox"};
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163 | for (int i=0; i<browsers.length; i++) {
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164 | if (SafeProcess.isAvailable(browsers[i])) {
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165 | command = browsers[i]+ " %1";
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166 | break;
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167 | }
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168 | }
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169 | //if (command == null) { command = StaticStrings.LINUX_OPEN_COMMAND; } // "xdg-open %1"
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170 | }
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171 |
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172 | // if we still haven't found something, prompt the user
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173 | if (command == null) {
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174 | PreviewCommandDialog dialog = new PreviewCommandDialog();
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175 | command = dialog.display();
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176 | dialog.dispose();
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177 | dialog = null;
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178 | }
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179 |
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180 | // Store the result if any
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181 | if(command != null && !command.equals("")) {
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182 | Configuration.setPreviewCommand(command);
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183 | command = command.replaceAll(FILENAME_ARG, url);
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184 | DebugStream.println("Result = " + command);
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185 | return command;
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186 | }
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187 | // if we haven't got a command by now, we'll never get one
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188 | DebugStream.println("Result = null");
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189 | return null;
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190 |
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191 | }
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192 |
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193 | public int getColumnCount() {
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194 | return 2;
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195 | }
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196 |
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197 | public String getColumnName(int column) {
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198 | String name;
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199 | switch(column) {
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200 | case 0:
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201 | name = Dictionary.get("FileAssociationDialog.Table.Extension");
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202 | break;
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203 | default:
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204 | name = Dictionary.get("FileAssociationDialog.Table.Command");
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205 | }
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206 | return name;
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207 | }
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208 |
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209 | public String [] getCommand(File file) {
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210 | String command = null;
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211 | String [] commands = null;
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212 | if(file.isFile()) {
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213 | // Determine extension
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214 | String filename = file.getAbsolutePath();
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215 | String extension = filename.substring(filename.lastIndexOf(".") + 1);
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216 | // Try to retrieve a value from cache
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217 | Element entry = getCommand(extension);
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218 | if(entry != null) {
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219 | ///ystem.err.println("Retrieved Value From Cache");
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220 | command = XMLTools.getValue(entry);
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221 | }
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222 | if(command == null || command.length() == 0) {
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223 | ///ystem.err.println("No Existing Command");
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224 | // If command is null, and we are on windows try searching the registry.
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225 | if(Utility.isWindows()) {
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226 | //try the start command
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227 | if (Utility.isWindows9x()) {
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228 | command = StaticStrings.WIN_9X_OPEN_COMMAND;
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229 | } else {
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230 | command = StaticStrings.WIN_OPEN_COMMAND;
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231 | }
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232 |
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233 | }
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234 |
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235 | // If we are on a mac, default to using the open program
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236 | else if(Utility.isMac()) {
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237 | command = StaticStrings.MAC_OPEN_COMMAND;
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238 | }
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239 |
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240 | //else { command = StaticStrings.LINUX_OPEN_COMMAND; } // If linux, default to using xdg-open
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241 |
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242 | // Otherwise display the dialog and ask the user to enter launching command.
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243 | if(command == null || command.length() == 0) {
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244 | ///ystem.err.println("Show Dialog");
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245 | // Show the dialog which forces a user to select the launch command for a certain file.
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246 | FileAssociationDialog dialog = new FileAssociationDialog(this);
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247 | command = dialog.display(extension);
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248 | dialog = null;
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249 | }
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250 |
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251 | // Hopefully by now we have a command, or else we're never going to get one. Add the association.
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252 | if (command != null && !command.equals("")) {
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253 | // If no previous entry existed create one.
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254 | if(entry == null) {
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255 | entry = associations_element.getOwnerDocument().createElement(StaticStrings.ENTRY_ELEMENT);
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256 | entry.setAttribute(StaticStrings.EXTENSION_ATTRIBUTE, extension);
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257 | associations_element.appendChild(entry);
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258 | }
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259 | // Replace the text in this node. Remember to replace the dummy filename with %1 - I dont think the filename will ever be in the comand now
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260 | //XMLTools.setValue(entry, command.replaceAll(filename, FILENAME_ARG));
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261 | XMLTools.setValue(entry, command);
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262 | }
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263 | }
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264 |
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265 | if (command != null && !command.equals("")) {
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266 |
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267 | // Make the command into a string []
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268 | commands = command.split(" ");
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269 |
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270 | // Now substitute any occurrences of %1 with its filename
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271 | // Note this is done after the split on spaces to avoid
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272 | // any conflict with filenames with spaces in them.
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273 |
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274 | // We have to fix filename under windows to escape the backslashes
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275 | filename = filename.replaceAll(ESCAPE, ESCAPED_ESCAPE);
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276 |
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277 | // dealing with spaces in filepath when using start command
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278 | if(Utility.isWindows() && filename.indexOf(" ") != -1 && command.indexOf("start") != -1) {
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279 | // On Windows, start command used spaces in filepath. In this case:
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280 | // start and its arguments all together need to go into one element of the commands array
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281 | // otherwise <cmd /c start "window title" "%1"> does not work if there are spaces in the
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282 | // file path %1, when running the Process with a command array.
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283 |
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284 | // Need <"start \"window\" \"%1\""> to be an element in the command array:
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285 | String[] tmp = commands;
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286 | int index = 0;
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287 |
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288 | for(int i = 0; i < commands.length; i++) {
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289 | if(commands[i].indexOf("start") != -1) {
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290 | index = i;
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291 | }
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292 | }
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293 |
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294 | commands = new String[index+1];
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295 | for(int i = 0; i < index; i++) {
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296 | commands[i] = tmp[i];
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297 | }
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298 |
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299 | commands[index] = tmp[index];
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300 | for(int i = index+1; i < tmp.length; i++) {
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301 | commands[index] = commands[index] + " " + tmp[i];
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302 | }
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303 |
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304 | }
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305 |
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306 | for (int i=0; i<commands.length; i++) {
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307 | // Replace %1 with the appropriate filename
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308 | commands[i] = commands[i].replaceAll(FILENAME_ARG, filename);
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309 | }
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310 | }
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311 |
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312 | entry = null;
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313 | extension = null;
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314 | filename = null;
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315 | }
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316 | return commands;
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317 | }
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318 |
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319 | public Element getCommand(String target_extension) {
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320 | NodeList entries = associations_element.getElementsByTagName(StaticStrings.ENTRY_ELEMENT);
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321 | for(int i = 0; i < entries.getLength(); i++) {
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322 | Element entry = (Element) entries.item(i);
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323 | String extension = entry.getAttribute(StaticStrings.EXTENSION_ATTRIBUTE);
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324 | if(extension.equalsIgnoreCase(target_extension)) {
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325 | entries = null;
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326 | extension = null;
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327 | return entry;
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328 | }
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329 | }
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330 | entries = null;
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331 | return null;
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332 | }
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333 |
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334 | public String getCommandString(String target_extension) {
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335 | Element entry = getCommand(target_extension);
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336 | if(entry != null) {
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337 | return XMLTools.getValue(entry);
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338 | }
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339 | else {
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340 | return "";
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341 | }
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342 | }
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343 |
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344 | public String getExtension(int index) {
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345 | NodeList entries = associations_element.getElementsByTagName(StaticStrings.ENTRY_ELEMENT);
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346 | if(0 <= index && index < entries.getLength()) {
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347 | Element entry = (Element) entries.item(index);
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348 | return entry.getAttribute(StaticStrings.EXTENSION_ATTRIBUTE);
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349 | }
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350 | return "";
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351 | }
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352 |
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353 | public int getRowCount() {
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354 | return size();
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355 | }
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356 |
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357 | public Object getValueAt(int row, int column) {
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358 | String extension = getExtension(row);
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359 | switch(column) {
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360 | case 0:
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361 | return extension;
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362 | default:
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363 | return getCommandString(extension);
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364 | }
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365 | }
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366 |
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367 | public void save() {
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368 | }
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369 |
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370 | public void setCommand(String extension, String command) {
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371 | DebugStream.println("Set Launch: " + extension + " with " + command);
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372 | // Retrieve any existing entry for this extension
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373 | Element entry = getCommand(extension);
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374 | // If no previous entry existed create one.
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375 | if(entry == null && command != null) {
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376 | entry = associations_element.getOwnerDocument().createElement(StaticStrings.ENTRY_ELEMENT);
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377 | entry.setAttribute(StaticStrings.EXTENSION_ATTRIBUTE, extension);
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378 | associations_element.appendChild(entry);
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379 | }
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380 |
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381 | if(command != null) {
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382 | // Replace the text in this node. If the user has used filename instead of %1 then too bad.
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383 | XMLTools.setValue(entry, command);
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384 | }
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385 | else {
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386 | // Remove the entry
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387 | associations_element.removeChild(entry);
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388 | }
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389 | entry = null;
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390 | fireTableDataChanged(); // Can't be anymore efficient as DOM does not gareuntee ordering of new child nodes is consistant
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391 | }
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392 |
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393 | public int size() {
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394 | NodeList entries = associations_element.getElementsByTagName(StaticStrings.ENTRY_ELEMENT);
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395 | return entries.getLength();
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396 | }
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397 |
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398 | }
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