| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2003 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 "Apache" 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 |
| * XMLBeans", 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) 2000-2003 BEA Systems |
| * Inc., <http://www.bea.com/>. For more information on the Apache Software |
| * Foundation, please see <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xmlbeans.impl.common; |
| |
| import org.apache.xmlbeans.SchemaType; |
| |
| public class XmlWhitespace |
| { |
| public static final int WS_UNSPECIFIED = SchemaType.WS_UNSPECIFIED; |
| public static final int WS_PRESERVE = SchemaType.WS_PRESERVE; |
| public static final int WS_REPLACE = SchemaType.WS_REPLACE; |
| public static final int WS_COLLAPSE = SchemaType.WS_COLLAPSE; |
| |
| |
| public static boolean isSpace(char ch) |
| { |
| switch (ch) |
| { |
| case ' ': |
| case '\n': |
| case '\r': |
| case '\t': |
| return true; |
| } |
| return false; |
| } |
| |
| public static boolean isAllSpace(String v) |
| { |
| for (int i = 0; i < v.length(); i++) |
| { |
| if (!isSpace(v.charAt(i))) |
| return false; |
| } |
| return true; |
| } |
| |
| public static String collapse(String v) |
| { |
| return collapse(v, XmlWhitespace.WS_COLLAPSE); |
| } |
| |
| /** |
| * The algorithm used by apply_wscanon: sometimes used in impls. |
| */ |
| public static String collapse(String v, int wsr) |
| { |
| if (wsr == SchemaType.WS_PRESERVE || wsr == SchemaType.WS_UNSPECIFIED) |
| return v; |
| |
| if (v.indexOf('\n') >= 0) |
| v = v.replace('\n', ' '); |
| if (v.indexOf('\t') >= 0) |
| v = v.replace('\t', ' '); |
| if (v.indexOf('\r') >= 0) |
| v = v.replace('\r', ' '); |
| |
| if (wsr == SchemaType.WS_REPLACE) |
| return v; |
| |
| int j = 0; |
| int len = v.length(); |
| if (len == 0) |
| return v; |
| |
| int i; |
| |
| /* a trick: examine every other character looking for pairs of spaces */ |
| if (v.charAt(0) != ' ') |
| { |
| examine: { |
| for (j = 2; j < len; j += 2) |
| { |
| if (v.charAt(j) == ' ') |
| { |
| if (v.charAt(j - 1) == ' ') |
| break examine; |
| if (j == len - 1) |
| break examine; |
| j++; |
| if (v.charAt(j) == ' ') |
| break examine; |
| } |
| } |
| if (j == len && v.charAt(j - 1) == ' ') |
| break examine; |
| return v; |
| } |
| /* j is pointing at the first ws to be removed, or past end */ |
| i = j; |
| } |
| else |
| { |
| /** |
| * j is pointing at the last whitespace in the initial run |
| */ |
| while (j + 1 < v.length() && v.charAt(j + 1) == ' ') |
| j += 1; |
| i = 0; |
| } |
| |
| char[] ch = v.toCharArray(); |
| |
| shifter: for (;;) |
| { |
| for (;;) |
| { |
| /* j was ws or past end */ |
| j++; |
| if (j >= len) |
| break shifter; |
| if (v.charAt(j) != ' ') |
| break; |
| } |
| for (;;) |
| { |
| /* j was nonws */ |
| ch[i++] = ch[j++]; |
| if (j >= len) |
| break shifter; |
| if (ch[j] == ' ') |
| { |
| ch[i++] = ch[j++]; |
| if (j >= len) |
| break shifter; |
| if (ch[j] == ' ') |
| break; |
| } |
| } |
| } |
| |
| return new String(ch, 0, (i == 0 || ch[i - 1] != ' ') ? i : i - 1); |
| } |
| |
| } |