| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xml.utils; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xml.utils.URI; |
| import org.apache.xml.utils.URI.MalformedURIException; |
| |
| import java.io.*; |
| |
| import java.lang.StringBuffer; |
| |
| /** |
| * <meta name="usage" content="internal"/> |
| * This class is used to resolve relative URIs and SystemID |
| * strings into absolute URIs. |
| * |
| * <p>This is a generic utility for resolving URIs, other than the |
| * fact that it's declared to throw TransformerException. Please |
| * see code comments for details on how resolution is performed.</p> |
| */ |
| public class SystemIDResolver |
| { |
| |
| /** |
| * Get absolute URI from a given relative URI. |
| * |
| * <p>The URI is resolved relative to the system property "user.dir" |
| * if it is available; if not (i.e. in an Applet perhaps which |
| * throws SecurityException) then it is currently resolved |
| * relative to "" or a blank string. Also replaces all |
| * backslashes with forward slashes.</p> |
| * |
| * @param uri Relative URI to resolve |
| * |
| * @return Resolved absolute URI or the input relative URI if |
| * it could not be resolved. |
| */ |
| public static String getAbsoluteURIFromRelative(String uri) |
| { |
| |
| String curdir = ""; |
| try { |
| curdir = System.getProperty("user.dir"); |
| } |
| catch (SecurityException se) {}// user.dir not accessible from applet |
| |
| if (null != curdir) |
| { |
| String base; |
| if (curdir.startsWith(File.separator)) |
| base = "file://" + curdir; |
| else |
| base = "file:///" + curdir; |
| |
| if (uri != null) |
| // Note: this should arguably stick in a '/' forward |
| // slash character instead of the file separator, |
| // since we're effectively assuming it's a hierarchical |
| // URI and adding in the abs_path separator -sc |
| uri = base + System.getProperty("file.separator") + uri; |
| else |
| uri = base + System.getProperty("file.separator"); |
| } |
| |
| if (null != uri && (uri.indexOf('\\') > -1)) |
| uri = uri.replace('\\', '/'); |
| |
| return uri; |
| } |
| |
| /** |
| * Take a SystemID string and try and turn it into a good absolute URL. |
| * |
| * @param urlString url A URL string, which may be relative or absolute. |
| * |
| * @return The resolved absolute URI |
| * @throws TransformerException thrown if the string can't be turned into a URL. |
| */ |
| public static String getAbsoluteURI(String url) |
| throws TransformerException |
| { |
| if (url.startsWith("..")) |
| url = new File(url).getAbsolutePath(); |
| |
| if (url.startsWith(File.separator)) |
| { |
| // If the url starts with a path separator, we assume it's |
| // a reference to a file: scheme (why do we do this? -sc) |
| url = "file://" + url; |
| } |
| else if (url.indexOf(':') < 0) |
| { |
| // If the url does not have a colon: character (which |
| // separates the scheme part from the rest) then it |
| // must be a relative one, so go get an absolute one -sc |
| url = getAbsoluteURIFromRelative(url); |
| } |
| |
| // Bugzilla#5701: the below else if is incorrect, if you read |
| // section 5.2 of RFC 2396. If the url did start with file:, |
| // it implies we should assume it's absolute and be done |
| // with resolving. Note that I'm not even sure why we put |
| // in the second check for '/' anyways -sc |
| //else if (url.startsWith("file:") && url.charAt(5) != '/') |
| //{ |
| // url = getAbsoluteURIFromRelative(url.substring(5)); |
| //} |
| // Bugzilla#5701 comment out code end |
| |
| return url; |
| } |
| |
| |
| /** |
| * Take a SystemID string and try and turn it into a good absolute URL. |
| * |
| * @param urlString SystemID string |
| * @param base Base URI to use to resolve the given systemID |
| * |
| * @return The resolved absolute URI |
| * @throws TransformerException thrown if the string can't be turned into a URL. |
| */ |
| public static String getAbsoluteURI(String urlString, String base) |
| throws TransformerException |
| { |
| boolean isAbsouteUrl = false; |
| boolean needToResolve = false; |
| |
| // Bugzilla#5701: the below if is incorrect, if you read |
| // section 5.2 of RFC 2396. If the url did start with file:, |
| // it implies we should assume it's absolute and be done |
| // with resolving. Note that I'm not even sure why we put |
| // in the second check for '/' anyways -sc |
| //if(urlString.startsWith("file:") && urlString.charAt(5) != '/') |
| //{ |
| // needToResolve = true; |
| //} |
| //else if (urlString.indexOf(':') > 0) |
| // Bugzilla#5701 comment out code end |
| if (urlString.indexOf(':') > 0) |
| { |
| // If there is a colon to separate the scheme from the rest, |
| // it should be an absolute URL |
| isAbsouteUrl = true; |
| } |
| else if (urlString.startsWith(File.separator)) |
| { |
| // If the url starts with a path separator, we assume it's |
| // a reference to a file: scheme (why do we do this? -sc) |
| urlString = "file://" + urlString; |
| isAbsouteUrl = true; |
| } |
| |
| if ((!isAbsouteUrl) && ((null == base) |
| || (base.indexOf(':') < 0))) |
| { |
| if (base != null && base.startsWith(File.separator)) |
| base = "file://" + base; |
| else |
| base = getAbsoluteURIFromRelative(base); |
| } |
| |
| // bit of a hack here. Need to talk to URI person to see if this can be fixed. |
| if ((null != base) && needToResolve) |
| |
| { |
| if(base.equals(urlString)) |
| { |
| base = ""; |
| } |
| else |
| { |
| urlString = urlString.substring(5); |
| isAbsouteUrl = false; |
| } |
| } |
| |
| // This is probably a bad idea, we should at least check for quotes... |
| if (null != base && (base.indexOf('\\') > -1)) |
| base = base.replace('\\', '/'); |
| |
| if (null != urlString && (urlString.indexOf('\\') > -1)) |
| urlString = urlString.replace('\\', '/'); |
| |
| URI uri; |
| |
| try |
| { |
| if ((null == base) || (base.length() == 0) || (isAbsouteUrl)) |
| { |
| uri = new URI(urlString); |
| } |
| else |
| { |
| URI baseURI = new URI(base); |
| |
| uri = new URI(baseURI, urlString); |
| } |
| } |
| catch (MalformedURIException mue) |
| { |
| throw new TransformerException(mue); |
| } |
| |
| String uriStr = uri.toString(); |
| |
| // Not so sure if this is good. But, for now, I'll try it. We really must |
| // make sure the return from this function is a URL! |
| if((Character.isLetter(uriStr.charAt(0)) && (uriStr.charAt(1) == ':') |
| && (uriStr.charAt(2) == '/') && (uriStr.charAt(3) != '/')) |
| || ((uriStr.charAt(0) == '/') && (uriStr.charAt(1) != '/'))) |
| { |
| uriStr = "file:///"+uriStr; |
| } |
| return uriStr; |
| } |
| } |