325N/A/*
325N/A * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
325N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
325N/A *
325N/A * This code is free software; you can redistribute it and/or modify it
325N/A * under the terms of the GNU General Public License version 2 only, as
325N/A * published by the Free Software Foundation. Oracle designates this
325N/A * particular file as subject to the "Classpath" exception as provided
325N/A * by Oracle in the LICENSE file that accompanied this code.
325N/A *
325N/A * This code is distributed in the hope that it will be useful, but WITHOUT
325N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
325N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
325N/A * version 2 for more details (a copy is included in the LICENSE file that
325N/A * accompanied this code).
325N/A *
325N/A * You should have received a copy of the GNU General Public License version
325N/A * 2 along with this work; if not, write to the Free Software Foundation,
325N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
325N/A *
325N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
325N/A * or visit www.oracle.com if you need additional information or have any
325N/A * questions.
325N/A */
325N/A/*
325N/A * Copyright (C) 2004-2011
325N/A *
325N/A * Permission is hereby granted, free of charge, to any person obtaining a copy
325N/A * of this software and associated documentation files (the "Software"), to deal
325N/A * in the Software without restriction, including without limitation the rights
325N/A * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
325N/A * copies of the Software, and to permit persons to whom the Software is
325N/A * furnished to do so, subject to the following conditions:
325N/A *
325N/A * The above copyright notice and this permission notice shall be included in
325N/A * all copies or substantial portions of the Software.
325N/A *
325N/A * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
325N/A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
325N/A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
325N/A * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
325N/A * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
325N/A * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
325N/A * THE SOFTWARE.
325N/A */
325N/Apackage com.sun.xml.internal.rngom.util;
325N/A
325N/Aimport java.net.URL;
325N/Aimport java.net.MalformedURLException;
325N/Aimport java.io.UnsupportedEncodingException;
325N/A
325N/Apublic class Uri {
325N/A private static String utf8 = "UTF-8";
325N/A
325N/A public static boolean isValid(String s) {
325N/A return isValidPercent(s) && isValidFragment(s) && isValidScheme(s);
325N/A }
325N/A
325N/A private static final String HEX_DIGITS = "0123456789abcdef";
325N/A
325N/A public static String escapeDisallowedChars(String s) {
325N/A StringBuffer buf = null;
325N/A int len = s.length();
325N/A int done = 0;
325N/A for (;;) {
325N/A int i = done;
325N/A for (;;) {
325N/A if (i == len) {
325N/A if (done == 0)
325N/A return s;
325N/A break;
325N/A }
325N/A if (isExcluded(s.charAt(i)))
325N/A break;
325N/A i++;
325N/A }
325N/A if (buf == null)
325N/A buf = new StringBuffer();
325N/A if (i > done) {
325N/A buf.append(s.substring(done, i));
325N/A done = i;
325N/A }
325N/A if (i == len)
325N/A break;
325N/A for (i++; i < len && isExcluded(s.charAt(i)); i++)
325N/A ;
325N/A String tem = s.substring(done, i);
325N/A byte[] bytes;
325N/A try {
325N/A bytes = tem.getBytes(utf8);
325N/A }
325N/A catch (UnsupportedEncodingException e) {
325N/A utf8 = "UTF8";
325N/A try {
325N/A bytes = tem.getBytes(utf8);
325N/A }
325N/A catch (UnsupportedEncodingException e2) {
325N/A // Give up
325N/A return s;
325N/A }
325N/A }
325N/A for (int j = 0; j < bytes.length; j++) {
325N/A buf.append('%');
325N/A buf.append(HEX_DIGITS.charAt((bytes[j] & 0xFF) >> 4));
325N/A buf.append(HEX_DIGITS.charAt(bytes[j] & 0xF));
325N/A }
325N/A done = i;
325N/A }
325N/A return buf.toString();
325N/A }
325N/A
325N/A private static final String excluded = "<>\"{}|\\^`";
325N/A
325N/A private static boolean isExcluded(char c) {
325N/A return c <= 0x20 || c >= 0x7F || excluded.indexOf(c) >= 0;
325N/A }
325N/A
325N/A private static boolean isAlpha(char c) {
325N/A return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
325N/A }
325N/A
325N/A private static boolean isHexDigit(char c) {
325N/A return ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F') || isDigit(c);
325N/A }
325N/A
325N/A private static boolean isDigit(char c) {
325N/A return '0' <= c && c <= '9';
325N/A }
325N/A
325N/A private static boolean isSchemeChar(char c) {
325N/A return isAlpha(c) || isDigit(c) || c == '+' || c == '-' || c =='.';
325N/A }
325N/A
325N/A private static boolean isValidPercent(String s) {
325N/A int len = s.length();
325N/A for (int i = 0; i < len; i++)
325N/A if (s.charAt(i) == '%') {
325N/A if (i + 2 >= len)
325N/A return false;
325N/A else if (!isHexDigit(s.charAt(i + 1))
325N/A || !isHexDigit(s.charAt(i + 2)))
325N/A return false;
325N/A }
325N/A return true;
325N/A }
325N/A
325N/A private static boolean isValidFragment(String s) {
325N/A int i = s.indexOf('#');
325N/A return i < 0 || s.indexOf('#', i + 1) < 0;
325N/A }
325N/A
325N/A private static boolean isValidScheme(String s) {
325N/A if (!isAbsolute(s))
325N/A return true;
325N/A int i = s.indexOf(':');
325N/A if (i == 0
325N/A || i + 1 == s.length()
325N/A || !isAlpha(s.charAt(0)))
325N/A return false;
325N/A while (--i > 0)
325N/A if (!isSchemeChar(s.charAt(i)))
325N/A return false;
325N/A return true;
325N/A }
325N/A
325N/A public static String resolve(String baseUri, String uriReference) {
325N/A if (!isAbsolute(uriReference) && baseUri != null && isAbsolute(baseUri)) {
325N/A try {
325N/A return new URL(new URL(baseUri), uriReference).toString();
325N/A }
325N/A catch (MalformedURLException e) { }
325N/A }
325N/A return uriReference;
325N/A }
325N/A
325N/A public static boolean hasFragmentId(String uri) {
325N/A return uri.indexOf('#') >= 0;
325N/A }
325N/A
325N/A public static boolean isAbsolute(String uri) {
325N/A int i = uri.indexOf(':');
325N/A if (i < 0)
325N/A return false;
325N/A while (--i >= 0) {
325N/A switch (uri.charAt(i)) {
325N/A case '#':
325N/A case '/':
325N/A case '?':
325N/A return false;
325N/A }
325N/A }
325N/A return true;
325N/A }
325N/A}