1 | /*
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2 | * Misc.java
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3 | * Copyright (C) 2002 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 |
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20 | package org.greenstone.util;
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21 |
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22 | import java.util.HashMap;
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23 | import java.util.Set;
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24 | import java.util.Map;
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25 | import java.util.Iterator;
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26 | import java.util.Properties;
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27 | import java.io.InputStream;
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28 | import java.io.BufferedReader;
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29 | import java.io.InputStreamReader;
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30 | import java.io.IOException;
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31 | import java.net.HttpURLConnection;
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32 | import java.net.URL;
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33 | import java.net.URLConnection;
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34 |
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35 | /** contains miscellaneous functions */
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36 | public class Misc {
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37 |
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38 | // Can initialise static final vars on declaration or in static initialisation code block
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39 | // http://stackoverflow.com/questions/2339932/java-can-final-variables-be-initialized-in-static-initialization-block
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40 | // Initialise object member final vars on declaration or in constructors
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41 | public static final String NEWLINE;
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42 |
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43 | // Before Java 7, no System.lineSeparator() or System.getProperty("line.separator")
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44 | // And on local linux, am compiling with JDK 6, so need this.
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45 | // http://stackoverflow.com/questions/207947/how-do-i-get-a-platform-dependent-new-line-character
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46 |
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47 | static {
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48 | // http://stackoverflow.com/questions/2591083/getting-java-version-at-runtime
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49 | // https://www.tutorialspoint.com/java/lang/package_getspecificationversion.htm
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50 |
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51 | double java_version = Double.parseDouble(System.getProperty("java.specification.version"));
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52 | if(java_version >= 1.7) { // https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html
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53 | NEWLINE = System.getProperty("line.separator");
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54 | } else {
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55 | NEWLINE = isWindows() ? "\r\n" : "\n";
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56 | }
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57 | }
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58 |
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59 | public static void printHash(HashMap map) {
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60 | Set entries = map.entrySet();
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61 | Iterator i = entries.iterator();
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62 | while (i.hasNext()) {
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63 | Map.Entry m = (Map.Entry)i.next();
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64 | String name = (String)m.getKey();
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65 | String value = (String)m.getValue();
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66 | }
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67 | }
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68 |
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69 | /** Method to determine if the host system is Windows based.
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70 | * @return a boolean which is true if the platform is Windows,
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71 | * false otherwise
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72 | */
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73 | public static boolean isWindows() {
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74 | Properties props = System.getProperties();
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75 | String os_name = props.getProperty("os.name","");
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76 | if(os_name.startsWith("Windows")) {
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77 | return true;
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78 | }
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79 | return false;
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80 | }
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81 |
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82 | public static boolean isWindows9x() {
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83 | Properties props = System.getProperties();
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84 | String os_name = props.getProperty("os.name","");
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85 | if(os_name.startsWith("Windows") && os_name.indexOf("9") != -1) {
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86 | return true;
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87 | }
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88 | return false;
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89 | }
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90 |
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91 | /** Method to determine if the host system is MacOS based.
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92 | * @return a boolean which is true if the platform is MacOS, false otherwise
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93 | */
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94 | public static boolean isMac() {
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95 | Properties props = System.getProperties();
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96 | String os_name = props.getProperty("os.name","");
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97 | if(os_name.startsWith("Mac OS")) {
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98 | return true;
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99 | }
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100 | return false;
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101 | }
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102 |
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103 | public static String getGsdlOS() {
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104 | if (isWindows()) {
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105 | return "windows";
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106 | }
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107 | if (isMac()) {
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108 | return "darwin";
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109 | }
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110 | return "linux";
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111 | }
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112 |
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113 | public static boolean isBigEndian() {
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114 |
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115 | if (System.getProperty("sun.cpu.endian").equals("big")) {
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116 | return true;
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117 | }
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118 | return false;
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119 |
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120 | }
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121 |
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122 | public static BufferedReader makeHttpConnection(String url_string)
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123 | throws java.net.MalformedURLException, java.io.IOException {
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124 | BufferedReader reader = null;
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125 | URL url = new URL(url_string);
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126 | HttpURLConnection connection = (HttpURLConnection)url.openConnection();
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127 | InputStream input = connection.getInputStream();
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128 | reader = new BufferedReader(new InputStreamReader(input));
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129 | return reader;
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130 | }
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131 |
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132 | public static void main(String [] args) {
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133 | isBigEndian();
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134 | }
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135 |
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136 | }
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137 |
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