com.sun.xml.fastinfoset.sax.SystemIdResolver Maven / Gradle / Ivy
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*
* Oracle licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.sun.xml.fastinfoset.sax;
import java.io.*;
public class SystemIdResolver {
public SystemIdResolver() {
}
public static String getAbsoluteURIFromRelative(String localPath) {
if (localPath == null || localPath.length() == 0) {
return "";
}
String absolutePath = localPath;
if (!isAbsolutePath(localPath)) {
try {
absolutePath = getAbsolutePathFromRelativePath(localPath);
}
catch (SecurityException se) {
return "file:" + localPath;
}
}
String urlString;
if (null != absolutePath) {
urlString = absolutePath.startsWith(File.separator) ?
("file://" + absolutePath) :
("file:///" + absolutePath);
}
else {
urlString = "file:" + localPath;
}
return replaceChars(urlString);
}
private static String getAbsolutePathFromRelativePath(String relativePath) {
return new File(relativePath).getAbsolutePath();
}
public static boolean isAbsoluteURI(String systemId) {
if (systemId == null) {
return false;
}
if (isWindowsAbsolutePath(systemId)) {
return false;
}
final int fragmentIndex = systemId.indexOf('#');
final int queryIndex = systemId.indexOf('?');
final int slashIndex = systemId.indexOf('/');
final int colonIndex = systemId.indexOf(':');
int index = systemId.length() -1;
if (fragmentIndex > 0) {
index = fragmentIndex;
}
if (queryIndex > 0 && queryIndex < index) {
index = queryIndex;
}
if (slashIndex > 0 && slashIndex 0) && (colonIndex < index);
}
public static boolean isAbsolutePath(String systemId) {
if(systemId == null)
return false;
final File file = new File(systemId);
return file.isAbsolute();
}
private static boolean isWindowsAbsolutePath(String systemId) {
if(!isAbsolutePath(systemId))
return false;
if (systemId.length() > 2
&& systemId.charAt(1) == ':'
&& Character.isLetter(systemId.charAt(0))
&& (systemId.charAt(2) == '\\' || systemId.charAt(2) == '/'))
return true;
else
return false;
}
private static String replaceChars(String str) {
StringBuffer buf = new StringBuffer(str);
int length = buf.length();
for (int i = 0; i < length; i++) {
char currentChar = buf.charAt(i);
// Replace space with "%20"
if (currentChar == ' ') {
buf.setCharAt(i, '%');
buf.insert(i+1, "20");
length = length + 2;
i = i + 2;
}
// Replace backslash with forward slash
else if (currentChar == '\\') {
buf.setCharAt(i, '/');
}
}
return buf.toString();
}
public static String getAbsoluteURI(String systemId) {
String absoluteURI = systemId;
if (isAbsoluteURI(systemId)) {
if (systemId.startsWith("file:")) {
String str = systemId.substring(5);
if (str != null && str.startsWith("/")) {
if (str.startsWith("///") || !str.startsWith("//")) {
int secondColonIndex = systemId.indexOf(':', 5);
if (secondColonIndex > 0) {
String localPath = systemId.substring(secondColonIndex-1);
try {
if (!isAbsolutePath(localPath))
absoluteURI = systemId.substring(0, secondColonIndex-1) +
getAbsolutePathFromRelativePath(localPath);
}
catch (SecurityException se) {
return systemId;
}
}
}
}
else {
return getAbsoluteURIFromRelative(systemId.substring(5));
}
return replaceChars(absoluteURI);
}
else {
return systemId;
}
}
else {
return getAbsoluteURIFromRelative(systemId);
}
}
}