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The source code// $Header: /home/cvs/jakarta-jmeter/src/htmlparser/org/htmlparser/tags/EndTag.java,v 1.2 2004/02/10 13:41:07 woolfel Exp $ /* * ==================================================================== * Copyright 2002-2004 The Apache Software Foundation. * * Licensed 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 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ // The developers of JMeter and Apache are greatful to the developers // of HTMLParser for giving Apache Software Foundation a non-exclusive // license. The performance benefits of HTMLParser are clear and the // users of JMeter will benefit from the hard work the HTMLParser // team. For detailed information about HTMLParser, the project is // hosted on sourceforge at http://htmlparser.sourceforge.net/. // // HTMLParser was originally created by Somik Raha in 2000. Since then // a healthy community of users has formed and helped refine the // design so that it is able to tackle the difficult task of parsing // dirty HTML. Derrick Oswald is the current lead developer and was kind // enough to assist JMeter. package org.htmlparser.tags; import org.htmlparser.Node; import org.htmlparser.tags.data.TagData; import org.htmlparser.visitors.NodeVisitor; /** * EndTag can identify closing tags, like </A>, </FORM>, etc. */ public class EndTag extends Tag { public final static String TYPE = "END_TAG"; public final static int ENDTAG_BEFORE_PARSING_STATE = 0; public final static int ENDTAG_WAIT_FOR_SLASH_STATE = 1; public final static int ENDTAG_BEGIN_PARSING_STATE = 2; public final static int ENDTAG_FINISHED_PARSING_STATE = 3; /** * Constructor takes 3 arguments to construct an EndTag object. * @param nodeBegin Beginning position of the end tag * @param nodeEnd Ending position of the end tag * @param tagContents Text contents of the tag */ public EndTag(TagData tagData) { super(tagData); } /** * Locate the end tag withing the input string, by parsing from the given position * @param input Input String * @param position Position to start parsing from */ public static Node find(String input, int position) { int state = ENDTAG_BEFORE_PARSING_STATE; StringBuffer tagContents = new StringBuffer(); int tagBegin = 0; int tagEnd = 0; int inputLen = input.length(); char ch; int i; for (i = position; (i < inputLen && state != ENDTAG_FINISHED_PARSING_STATE); i++) { ch = input.charAt(i); if (ch == '>' && state == ENDTAG_BEGIN_PARSING_STATE) { state = ENDTAG_FINISHED_PARSING_STATE; tagEnd = i; } if (state == ENDTAG_BEGIN_PARSING_STATE) { tagContents.append(ch); } if (state == ENDTAG_WAIT_FOR_SLASH_STATE) { if (ch == '/') { state = ENDTAG_BEGIN_PARSING_STATE; } else return null; } if (ch == '<') { if (state == ENDTAG_BEFORE_PARSING_STATE) { // Transition from State 0 to State 1 - Record data till > is encountered tagBegin = i; state = ENDTAG_WAIT_FOR_SLASH_STATE; } else if (state == ENDTAG_BEGIN_PARSING_STATE) { state = ENDTAG_FINISHED_PARSING_STATE; tagEnd = i; } } else if (state == ENDTAG_BEFORE_PARSING_STATE) // text before the end tag return (null); } // If parsing did not complete, it might be possible to accept if (state == ENDTAG_BEGIN_PARSING_STATE) { tagEnd = i; state = ENDTAG_FINISHED_PARSING_STATE; } if (state == ENDTAG_FINISHED_PARSING_STATE) return new EndTag( new TagData(tagBegin, tagEnd, tagContents.toString(), input)); else return null; } public String toPlainTextString() { return ""; } public String toHtml() { return ""; } public String toString() { return "EndTag : " + tagContents + "; begins at : " + elementBegin() + "; ends at : " + elementEnd(); } public void accept(NodeVisitor visitor) { visitor.visitEndTag(this); } public String getType() { return TYPE; } } |
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