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1 /* |
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2 * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 * |
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25 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC. |
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26 */ |
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27 |
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28 package com.sun.xml.internal.fastinfoset.sax; |
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29 |
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30 import java.io.*; |
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31 |
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32 public class SystemIdResolver { |
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33 |
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34 public SystemIdResolver() { |
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35 } |
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36 |
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37 public static String getAbsoluteURIFromRelative(String localPath) { |
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38 if (localPath == null || localPath.length() == 0) { |
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39 return ""; |
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40 } |
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41 |
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42 String absolutePath = localPath; |
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43 if (!isAbsolutePath(localPath)) { |
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44 try { |
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45 absolutePath = getAbsolutePathFromRelativePath(localPath); |
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46 } |
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47 catch (SecurityException se) { |
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48 return "file:" + localPath; |
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49 } |
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50 } |
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51 |
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52 String urlString; |
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53 if (null != absolutePath) { |
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54 urlString = absolutePath.startsWith(File.separator) ? |
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55 ("file://" + absolutePath) : |
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56 ("file:///" + absolutePath); |
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57 } |
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58 else { |
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59 urlString = "file:" + localPath; |
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60 } |
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61 |
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62 return replaceChars(urlString); |
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63 } |
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64 |
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65 private static String getAbsolutePathFromRelativePath(String relativePath) { |
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66 return new File(relativePath).getAbsolutePath(); |
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67 } |
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68 |
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69 public static boolean isAbsoluteURI(String systemId) { |
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70 if (systemId == null) { |
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71 return false; |
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72 } |
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73 |
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74 if (isWindowsAbsolutePath(systemId)) { |
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75 return false; |
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76 } |
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77 |
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78 final int fragmentIndex = systemId.indexOf('#'); |
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79 final int queryIndex = systemId.indexOf('?'); |
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80 final int slashIndex = systemId.indexOf('/'); |
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81 final int colonIndex = systemId.indexOf(':'); |
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82 |
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83 int index = systemId.length() -1; |
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84 if (fragmentIndex > 0) { |
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85 index = fragmentIndex; |
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86 } |
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87 if (queryIndex > 0 && queryIndex < index) { |
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88 index = queryIndex; |
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89 } |
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90 if (slashIndex > 0 && slashIndex <index) { |
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91 index = slashIndex; |
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92 } |
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93 return (colonIndex > 0) && (colonIndex < index); |
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94 } |
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95 |
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96 public static boolean isAbsolutePath(String systemId) { |
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97 if(systemId == null) |
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98 return false; |
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99 final File file = new File(systemId); |
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100 return file.isAbsolute(); |
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101 |
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102 } |
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103 |
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104 private static boolean isWindowsAbsolutePath(String systemId) { |
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105 if(!isAbsolutePath(systemId)) |
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106 return false; |
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107 if (systemId.length() > 2 |
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108 && systemId.charAt(1) == ':' |
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109 && Character.isLetter(systemId.charAt(0)) |
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110 && (systemId.charAt(2) == '\\' || systemId.charAt(2) == '/')) |
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111 return true; |
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112 else |
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113 return false; |
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114 } |
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115 |
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116 private static String replaceChars(String str) { |
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117 StringBuffer buf = new StringBuffer(str); |
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118 int length = buf.length(); |
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119 for (int i = 0; i < length; i++) { |
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120 char currentChar = buf.charAt(i); |
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121 // Replace space with "%20" |
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122 if (currentChar == ' ') { |
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123 buf.setCharAt(i, '%'); |
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124 buf.insert(i+1, "20"); |
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125 length = length + 2; |
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126 i = i + 2; |
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127 } |
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128 // Replace backslash with forward slash |
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129 else if (currentChar == '\\') { |
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130 buf.setCharAt(i, '/'); |
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131 } |
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132 } |
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133 |
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134 return buf.toString(); |
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135 } |
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136 |
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137 public static String getAbsoluteURI(String systemId) { |
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138 String absoluteURI = systemId; |
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139 if (isAbsoluteURI(systemId)) { |
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140 if (systemId.startsWith("file:")) { |
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141 String str = systemId.substring(5); |
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142 |
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143 if (str != null && str.startsWith("/")) { |
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144 if (str.startsWith("///") || !str.startsWith("//")) { |
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145 int secondColonIndex = systemId.indexOf(':', 5); |
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146 if (secondColonIndex > 0) { |
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147 String localPath = systemId.substring(secondColonIndex-1); |
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148 try { |
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149 if (!isAbsolutePath(localPath)) |
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150 absoluteURI = systemId.substring(0, secondColonIndex-1) + |
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151 getAbsolutePathFromRelativePath(localPath); |
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152 } |
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153 catch (SecurityException se) { |
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154 return systemId; |
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155 } |
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156 } |
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157 } |
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158 } |
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159 else { |
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160 return getAbsoluteURIFromRelative(systemId.substring(5)); |
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161 } |
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162 |
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163 return replaceChars(absoluteURI); |
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164 } |
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165 else { |
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166 return systemId; |
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167 } |
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168 } |
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169 else { |
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170 return getAbsoluteURIFromRelative(systemId); |
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171 } |
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172 } |
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173 } |