/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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
*
* 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.
*/
package org.apache.lucene.analysis.charfilter;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.util.TestUtil;
public class HTMLStripCharFilterTest extends BaseTokenStreamTestCase {
static private Analyzer newTestAnalyzer() {
return new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName) {
Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false);
return new TokenStreamComponents(tokenizer, tokenizer);
}
@Override
protected Reader initReader(String fieldName, Reader reader) {
return new HTMLStripCharFilter(reader);
}
};
}
//this is some text here is a link and another link . This is an entity: & plus a <. Here is an &
//
public void test() throws Exception {
String html = "<div class=\"foo\">this is some text</div> here is a <a href=\"#bar\">link</a> and " +
"another <a href=\"http://lucene.apache.org/\">link</a>. " +
"This is an entity: & plus a <. Here is an &. <!-- is a comment -->";
String gold = "\nthis is some text\n here is a link and " +
"another link. " +
"This is an entity: & plus a <. Here is an &. ";
assertHTMLStripsTo(html, gold, null);
}
//Some sanity checks, but not a full-fledged check
public void testHTML() throws Exception {
InputStream stream = getClass().getResourceAsStream("htmlStripReaderTest.html");
HTMLStripCharFilter reader = new HTMLStripCharFilter(new InputStreamReader(stream, StandardCharsets.UTF_8));
StringBuilder builder = new StringBuilder();
int ch = -1;
while ((ch = reader.read()) != -1){
builder.append((char)ch);
}
String str = builder.toString();
assertTrue("Entity not properly escaped", str.indexOf("<") == -1);//there is one > in the text
assertTrue("Forrest should have been stripped out", str.indexOf("forrest") == -1 && str.indexOf("Forrest") == -1);
assertTrue("File should start with 'Welcome to Solr' after trimming", str.trim().startsWith("Welcome to Solr"));
assertTrue("File should start with 'Foundation.' after trimming", str.trim().endsWith("Foundation."));
}
public void testMSWord14GeneratedHTML() throws Exception {
InputStream stream = getClass().getResourceAsStream("MS-Word 14 generated.htm");
HTMLStripCharFilter reader = new HTMLStripCharFilter(new InputStreamReader(stream, StandardCharsets.UTF_8));
String gold = "This is a test";
StringBuilder builder = new StringBuilder();
int ch = 0;
while ((ch = reader.read()) != -1){
builder.append((char)ch);
}
// Compare trim()'d output to gold
assertEquals("'" + builder.toString().trim() + "' is not equal to '" + gold + "'",
gold, builder.toString().trim());
}
public void testGamma() throws Exception {
assertHTMLStripsTo("Γ", "\u0393", new HashSet<>(Arrays.asList("reserved")));
}
public void testEntities() throws Exception {
String test = " <foo> Übermensch = Γ bar Γ";
String gold = " <foo> \u00DCbermensch = \u0393 bar \u0393";
assertHTMLStripsTo(test, gold, new HashSet<>(Arrays.asList("reserved")));
}
public void testMoreEntities() throws Exception {
String test = " <junk/> ! @ and ’";
String gold = " <junk/> ! @ and ’";
assertHTMLStripsTo(test, gold, new HashSet<>(Arrays.asList("reserved")));
}
public void testReserved() throws Exception {
String test = "aaa bbb <reserved ccc=\"ddddd\"> eeee </reserved> ffff <reserved ggg=\"hhhh\"/> <other/>";
Set<String> set = new HashSet<>();
set.add("reserved");
Reader reader = new HTMLStripCharFilter(new StringReader(test), set);
StringBuilder builder = new StringBuilder();
int ch = 0;
while ((ch = reader.read()) != -1){
builder.append((char)ch);
}
String result = builder.toString();
// System.out.println("Result: " + result);
assertTrue("Escaped tag not preserved: " + result.indexOf("reserved"), result.indexOf("reserved") == 9);
assertTrue("Escaped tag not preserved: " + result.indexOf("reserved", 15), result.indexOf("reserved", 15) == 38);
assertTrue("Escaped tag not preserved: " + result.indexOf("reserved", 41), result.indexOf("reserved", 41) == 54);
assertTrue("Other tag should be removed", result.indexOf("other") == -1);
}
public void testMalformedHTML() throws Exception {
String[] testGold = {
"a <a hr<ef=aa<a>> </close</a>",
"a <a hr<ef=aa> </close",
"<a href=http://dmoz.org/cgi-bin/add.cgi?where=/arts/\" class=lu style=\"font-size: 9px\" target=dmoz>Submit a Site</a>",
"Submit a Site",
"<a href=javascript:ioSwitch('p8','http://www.csmonitor.com/') title=expand id=e8 class=expanded rel=http://www.csmonitor.com/>Christian Science",
"Christian Science",
"<link rel=\"alternate\" type=\"application/rss+xml\" title=\"San Francisco \" 2008 RSS Feed\" href=\"http://2008.sf.wordcamp.org/feed/\" />",
"\n",
// "<" before ">" inhibits tag recognition
"<a href=\" http://www.surgery4was.happyhost.org/video-of-arthroscopic-knee-surgery symptoms.html, heat congestive heart failure <a href=\" http://www.symptoms1bad.happyhost.org/canine",
"<a href=\" http://www.surgery4was.happyhost.org/video-of-arthroscopic-knee-surgery symptoms.html, heat congestive heart failure <a href=\" http://www.symptoms1bad.happyhost.org/canine",
"<a href=\"http://ucblibraries.colorado.edu/how/index.htm\"class=\"pageNavAreaText\">",
"",
"<link title=\"^\\\" 21Sta's Blog\" rel=\"search\" type=\"application/opensearchdescription+xml\" href=\"http://21sta.com/blog/inc/opensearch.php\" />",
"\n",
"<a href=\"#postcomment\" title=\"\"Leave a comment\";\">?",
"?",
"<a href='/modern-furniture' ' id='21txt' class='offtab' onMouseout=\"this.className='offtab'; return true;\" onMouseover=\"this.className='ontab'; return true;\">",
"",
"<a href='http://alievi.wordpress.com/category/01-todos-posts/' style='font-size: 275%; padding: 1px; margin: 1px;' title='01 - Todos Post's (83)'>",
"",
"The <a href=<a href=\"http://www.advancedmd.com>medical\">http://www.advancedmd.com>medical</a> practice software</a>",
"The <a href=medical\">http://www.advancedmd.com>medical practice software",
"<a href=\"node/21426\" class=\"clipTitle2\" title=\"Levi.com/BMX 2008 Clip of the Week 29 \"Morgan Wade Leftover Clips\"\">Levi.com/BMX 2008 Clip of the Week 29...",
"Levi.com/BMX 2008 Clip of the Week 29...",
"<a href=\"printer_friendly.php?branch=&year=&submit=go&screen=\";\">Printer Friendly",
"Printer Friendly",
"<a href=#\" ondragstart=\"return false\" onclick=\"window.external.AddFavorite('http://www.amazingtextures.com', 'Amazing Textures');return false\" onmouseover=\"window.status='Add to Favorites';return true\">Add to Favorites",
"Add to Favorites",
"<a href=\"../at_home/at_home_search.html\"../_home/at_home_search.html\">At",
"At",
"E-mail: <a href=\"\"mailto:XXXXXX@example.com\" \">XXXXXX@example.com </a>",
"E-mail: XXXXXX@example.com ",
"<li class=\"farsi\"><a title=\"A'13?\" alt=\"A'13?\" href=\"http://www.america.gov/persian\" alt=\"\" name=\"A'13?\"A'13? title=\"A'13?\">A'13?</a></li>",
"\nA'13?\n",
"<li><a href=\"#28\" title=\"Hubert \"Geese\" Ausby\">Hubert \"Geese\" Ausby</a></li>",
"\nHubert \"Geese\" Ausby\n",
"<href=\"http://anbportal.com/mms/login.asp\">",
"\n",
"<a href=\"",
"<a href=\"",
"<a href=\">",
"",
"<a rel=\"nofollow\" href=\"http://anissanina31.skyrock.com/1895039493-Hi-tout-le-monde.html\" title=\" Hi, tout le monde !>#</a>",
"#",
"<a href=\"http://annunciharleydavidsonusate.myblog.it/\" title=\"Annunci Moto e Accessori Harley Davidson\" target=\"_blank\"><img src=\"http://annunciharleydavidsonusate.myblog.it/images/Antipixel.gif\" /></a>",
"",
"<a href=\"video/addvideo&v=120838887181\" onClick=\"return confirm('Are you sure you want add this video to your profile? If it exists some video in your profile will be overlapped by this video!!')\" \" onmouseover=\"this.className='border2'\" onmouseout=\"this.className=''\">",
"",
"<a href=#Services & Support>",
"",
// "<" and ">" chars are accepted in on[Event] attribute values
"<input type=\"image\" src=\"http://apologyindex.com/ThemeFiles/83401-72905/images/btn_search.gif\"value=\"Search\" name=\"Search\" alt=\"Search\" class=\"searchimage\" onclick=\"incom ='&sc=' + document.getElementById('sel').value ; var dt ='&dt=' + document.getElementById('dt').value; var searchKeyword = document.getElementById('q').value ; searchKeyword = searchKeyword.replace(/\\s/g,''); if (searchKeyword.length < 3){alert('Nothing to search. Search keyword should contain atleast 3 chars.'); return false; } var al='&al=' + document.getElementById('advancedlink').style.display ; document.location.href='http://apologyindex.com/search.aspx?q=' + document.getElementById('q').value + incom + dt + al;\" />",
"",
"<input type=\"image\" src=\"images/afbe.gif\" width=\"22\" height=\"22\" hspace=\"4\" title=\"Add to Favorite\" alt=\"Add to Favorite\"onClick=\" if(window.sidebar){ window.sidebar.addPanel(document.title,location.href,''); }else if(window.external){ window.external.AddFavorite(location.href,document.title); }else if(window.opera&&window.print) { return true; }\">",
"",
"<area shape=\"rect\" coords=\"12,153,115,305\" href=\"http://statenislandtalk.com/v-web/gallery/Osmundsen-family\"Art's Norwegian Roots in Rogaland\">",
"\n",
"<a rel=\"nofollow\" href=\"http://arth26.skyrock.com/660188240-bonzai.html\" title=\"bonza>#",
"#",
"<a href= >",
"",
"<ahref=http:..",
"<ahref=http:..",
"<ahref=http:..>",
"\n",
"<ahref=\"http://aseigo.bddf.ca/cms/1025\">A",
"\nA",
"<a href=\"javascript:calendar_window=window.open('/calendar.aspx?formname=frmCalendar.txtDate','calendar_window','width=154,height=188');calendar_window.focus()\">",
"",
"<a href=\"/applications/defenseaerospace/19+rackmounts\" title=\"19\" Rackmounts\">",
"",
"<a href=http://www.azimprimerie.fr/flash/backup/lewes-zip-code/savage-model-110-manual.html title=savage model 110 manual rel=dofollow>",
"",
"<a class=\"at\" name=\"Lamborghini href=\"http://lamborghini.coolbegin.com\">Lamborghini /a>",
"Lamborghini /a>",
"<A href='newslink.php?news_link=http%3A%2F%2Fwww.worldnetdaily.com%2Findex.php%3Ffa%3DPAGE.view%26pageId%3D85729&news_title=Florida QB makes 'John 3:16' hottest Google search Tebow inscribed Bible reference on eye black for championship game' TARGET=_blank>",
"",
"<a href=/myspace !style='color:#993333'>",
"",
"<meta name=3DProgId content=3DExcel.Sheet>",
"\n",
"<link id=3D\"shLink\" href=3D\"PSABrKelly-BADMINTONCupResults08FINAL2008_09_19=_files/sheet004.htm\">",
"\n",
"<td bgcolor=3D\"#FFFFFF\" nowrap>",
"\n",
"<a href=\"http://basnect.info/usersearch/\"predicciones-mundiales-2009\".html\">\"predicciones mundiales 2009\"</a>",
"\"predicciones mundiales 2009\"",
"<a class=\"comment-link\" href=\"https://www.blogger.com/comment.g?blogID=19402125&postID=114070605958684588\"location.href=https://www.blogger.com/comment.g?blogID=19402125&postID=114070605958684588;>",
"",
"<a href = \"/videos/Bishop\"/\" title = \"click to see more Bishop\" videos\">Bishop\"</a>",
"Bishop\"",
"<a href=\"http://bhaa.ie/calendar/event.php?eid=20081203150127531\"\">BHAA Eircom 2 & 5 miles CC combined start</a>",
"BHAA Eircom 2 & 5 miles CC combined start",
"<a href=\"http://people.tribe.net/wolfmana\" onClick='setClick(\"Application[tribe].Person[bb7df210-9dc0-478c-917f-436b896bcb79]\")'\" title=\"Mana\">",
"",
"<a href=\"http://blog.edu-cyberpg.com/ct.ashx?id=6143c528-080c-4bb2-b765-5ec56c8256d3&url=http%3a%2f%2fwww.gsa.ac.uk%2fmackintoshsketchbook%2f\"\" eudora=\"autourl\">",
"",
// "<" before ">" inhibits tag recognition
"<input type=\"text\" value=\"<search here>\">",
"<input type=\"text\" value=\"\n\">",
"<input type=\"text\" value=\"<search here\">",
"<input type=\"text\" value=\"\n",
"<input type=\"text\" value=\"search here>\">",
"\">",
// "<" and ">" chars are accepted in on[Event] attribute values
"<input type=\"text\" value=\"<search here>\" onFocus=\"this.value='<search here>'\">",
"",
"<![if ! IE]>\n<link href=\"http://i.deviantart.com/icons/favicon.png\" rel=\"shortcut icon\"/>\n<![endif]>",
"\n\n\n",
"<![if supportMisalignedColumns]>\n<tr height=0 style='display:none'>\n<td width=64 style='width:48pt'></td>\n</tr>\n<![endif]>",
"\n\n\n\n\n\n\n\n",
};
for (int i = 0 ; i < testGold.length ; i += 2) {
assertHTMLStripsTo(testGold[i], testGold[i + 1], null);
}
}
public void testBufferOverflow() throws Exception {
StringBuilder testBuilder = new StringBuilder(HTMLStripCharFilter.getInitialBufferSize() + 50);
testBuilder.append("ah<?> ??????");
appendChars(testBuilder, HTMLStripCharFilter.getInitialBufferSize() + 500);
Reader reader = new HTMLStripCharFilter
(new BufferedReader(new StringReader(testBuilder.toString()))); //force the use of BufferedReader
assertHTMLStripsTo(reader, testBuilder.toString(), null);
testBuilder.setLength(0);
testBuilder.append("<!--");//comments
appendChars(testBuilder, 3 * HTMLStripCharFilter.getInitialBufferSize() + 500);//comments have two lookaheads
testBuilder.append("-->foo");
String gold = "foo";
assertHTMLStripsTo(testBuilder.toString(), gold, null);
testBuilder.setLength(0);
testBuilder.append("<?");
appendChars(testBuilder, HTMLStripCharFilter.getInitialBufferSize() + 500);
testBuilder.append("?>");
gold = "";
assertHTMLStripsTo(testBuilder.toString(), gold, null);
testBuilder.setLength(0);
testBuilder.append("<b ");
appendChars(testBuilder, HTMLStripCharFilter.getInitialBufferSize() + 500);
testBuilder.append("/>");
gold = "";
assertHTMLStripsTo(testBuilder.toString(), gold, null);
}
private void appendChars(StringBuilder testBuilder, int numChars) {
int i1 = numChars / 2;
for (int i = 0; i < i1; i++){
testBuilder.append('a').append(' ');//tack on enough to go beyond the mark readahead limit, since <?> makes HTMLStripCharFilter think it is a processing instruction
}
}
public void testComment() throws Exception {
String test = "<!--- three dashes, still a valid comment ---> ";
String gold = " ";
assertHTMLStripsTo(test, gold, null);
test = "<! -- blah > "; // should not be recognized as a comment
gold = " ";
assertHTMLStripsTo(test, gold, null);
StringBuilder testBuilder = new StringBuilder("<!--");
appendChars(testBuilder, TestUtil.nextInt(random(), 0, 1000));
gold = "";
assertHTMLStripsTo(testBuilder.toString(), gold, null);
}
public void doTestOffsets(String in) throws Exception {
HTMLStripCharFilter reader = new HTMLStripCharFilter(new BufferedReader(new StringReader(in)));
int ch = 0;
int off = 0; // offset in the reader
int strOff = -1; // offset in the original string
while ((ch = reader.read()) != -1) {
int correctedOff = reader.correctOffset(off);
if (ch == 'X') {
strOff = in.indexOf('X',strOff+1);
assertEquals(strOff, correctedOff);
}
off++;
}
}
public void testOffsets() throws Exception {
// doTestOffsets("hello X how X are you");
doTestOffsets("hello <p> X<p> how <p>X are you");
doTestOffsets("X & X ( X < > X");
// test backtracking
doTestOffsets("X < &zz >X &# < X > < &l > &g < X");
}
static void assertLegalOffsets(String in) throws Exception {
int length = in.length();
HTMLStripCharFilter reader = new HTMLStripCharFilter(new BufferedReader(new StringReader(in)));
int ch = 0;
int off = 0;
while ((ch = reader.read()) != -1) {
int correction = reader.correctOffset(off);
assertTrue("invalid offset correction: " + off + "->" + correction + " for doc of length: " + length,
correction <= length);
off++;
}
}
public void testLegalOffsets() throws Exception {
assertLegalOffsets("hello world");
assertLegalOffsets("hello &#x world");
}
public void testRandom() throws Exception {
int numRounds = RANDOM_MULTIPLIER * 1000;
Analyzer a = newTestAnalyzer();
checkRandomData(random(), a, numRounds);
a.close();
}
public void testRandomHugeStrings() throws Exception {
int numRounds = RANDOM_MULTIPLIER * 100;
Analyzer a = newTestAnalyzer();
checkRandomData(random(), a, numRounds, 8192);
a.close();
}
public void testCloseBR() throws Exception {
Analyzer a = newTestAnalyzer();
checkAnalysisConsistency(random(), a, random().nextBoolean(), " Secretary)</br> [[M");
a.close();
}
public void testServerSideIncludes() throws Exception {
String test = "one<img src=\"image.png\"\n"
+ " alt = \"Alt: <!--#echo var='${IMAGE_CAPTION:<!--comment-->\\'Comment\\'}' -->\"\n\n"
+ " title=\"Title: <!--#echo var=\"IMAGE_CAPTION\"-->\">two";
String gold = "onetwo";
assertHTMLStripsTo(test, gold, null);
test = "one<script><!-- <!--#config comment=\"<!-- \\\"comment\\\"-->\"--> --></script>two";
gold = "one\ntwo";
assertHTMLStripsTo(test, gold, null);
}
public void testScriptQuotes() throws Exception {
String test = "one<script attr= bare><!-- action('<!-- comment -->', \"\\\"-->\\\"\"); --></script>two";
String gold = "one\ntwo";
assertHTMLStripsTo(test, gold, null);
test = "hello<script><!-- f('<!--internal--></script>'); --></script>";
gold = "hello\n";
assertHTMLStripsTo(test, gold, null);
}
public void testEscapeScript() throws Exception {
String test = "one<script no-value-attr>callSomeMethod();</script>two";
String gold = "one<script no-value-attr></script>two";
Set<String> escapedTags = new HashSet<>(Arrays.asList("SCRIPT"));
assertHTMLStripsTo(test, gold, escapedTags);
}
public void testStyle() throws Exception {
String test = "one<style type=\"text/css\">\n"
+ "<!--\n"
+ "@import url('http://www.lasletrasdecanciones.com/css.css');\n"
+ "-->\n"
+ "</style>two";
String gold = "one\ntwo";
assertHTMLStripsTo(test, gold, null);
}
public void testEscapeStyle() throws Exception {
String test = "one<style type=\"text/css\"> body,font,a { font-family:arial; } </style>two";
String gold = "one<style type=\"text/css\"></style>two";
Set<String> escapedTags = new HashSet<>(Arrays.asList("STYLE"));
assertHTMLStripsTo(test, gold, escapedTags);
}
public void testBR() throws Exception {
String[] testGold = {
"one<BR />two<br>three",
"one\ntwo\nthree",
"one<BR some stuff here too>two</BR>",
"one\ntwo\n",
};
for (int i = 0 ; i < testGold.length ; i += 2) {
assertHTMLStripsTo(testGold[i], testGold[i + 1], null);
}
}
public void testEscapeBR() throws Exception {
String test = "one<BR class='whatever'>two</\nBR\n>";
String gold = "one<BR class='whatever'>two</\nBR\n>";
Set<String> escapedTags = new HashSet<>(Arrays.asList("BR"));
assertHTMLStripsTo(test, gold, escapedTags);
}
public void testInlineTagsNoSpace() throws Exception {
String test = "one<sPAn class=\"invisible\">two<sup>2<sup>e</sup></sup>.</SpaN>three";
String gold = "onetwo2e.three";
assertHTMLStripsTo(test, gold, null);
}
public void testCDATA() throws Exception {
int maxNumElems = 100;
String randomHtmlishString1 // Don't create a comment (disallow "<!--") and don't include a closing ">"
= TestUtil.randomHtmlishString(random(), maxNumElems).replaceAll(">", " ").replaceFirst("^--","__");
String closedAngleBangNonCDATA = "<!" + randomHtmlishString1 +"-[CDATA[&]]>";
String randomHtmlishString2 // Don't create a comment (disallow "<!--") and don't include a closing ">"
= TestUtil.randomHtmlishString(random(), maxNumElems).replaceAll(">", " ").replaceFirst("^--","__");
String unclosedAngleBangNonCDATA = "<!" + randomHtmlishString1 +"-[CDATA[";
String[] testGold = {
"one<![CDATA[<one><two>three<four></four></two></one>]]>two",
"one<one><two>three<four></four></two></one>two",
"one<![CDATA[two<![CDATA[three]]]]><![CDATA[>four]]>five",
"onetwo<![CDATA[three]]>fourfive",
"<! [CDATA[&]]>", "",
"<! [CDATA[&] ] >", "",
"<! [CDATA[&]]", "<! [CDATA[&]]", // unclosed angle bang - all input is output
"<!\u2009[CDATA[&]]>", "",
"<!\u2009[CDATA[&]\u2009]\u2009>", "",
"<!\u2009[CDATA[&]\u2009]\u2009", "<!\u2009[CDATA[&]\u2009]\u2009", // unclosed angle bang - all input is output
closedAngleBangNonCDATA, "",
"<![CDATA[", "",
"<![CDATA[<br>", "<br>",
"<![CDATA[<br>]]", "<br>]]",
"<![CDATA[<br>]]>", "<br>",
"<![CDATA[<br>] ] >", "<br>] ] >",
"<![CDATA[<br>]\u2009]\u2009>", "<br>]\u2009]\u2009>",
"<!\u2009[CDATA[", "<!\u2009[CDATA[",
unclosedAngleBangNonCDATA, unclosedAngleBangNonCDATA
};
for (int i = 0 ; i < testGold.length ; i += 2) {
assertHTMLStripsTo(testGold[i], testGold[i + 1], null);
}
}
public void testUnclosedAngleBang() throws Exception {
assertHTMLStripsTo("<![endif]", "<![endif]", null);
}
public void testUppercaseCharacterEntityVariants() throws Exception {
String test = " "-©>><<®&";
String gold = " \"-\u00A9>><<\u00AE&";
assertHTMLStripsTo(test, gold, null);
}
public void testMSWordMalformedProcessingInstruction() throws Exception {
String test = "one<?xml:namespace prefix = o ns = \"urn:schemas-microsoft-com:office:office\" />two";
String gold = "onetwo";
assertHTMLStripsTo(test, gold, null);
}
public void testSupplementaryCharsInTags() throws Exception {
String test = "one<𩬅艱鍟䇹愯瀛>two<瀛愯𩬅>three 瀛愯𩬅</瀛愯𩬅>four</𩬅艱鍟䇹愯瀛>five<𠀀𠀀>six<𠀀𠀀/>seven";
String gold = "one\ntwo\nthree 瀛愯𩬅\nfour\nfive\nsix\nseven";
assertHTMLStripsTo(test, gold, null);
}
public void testRandomBrokenHTML() throws Exception {
int maxNumElements = 10000;
String text = TestUtil.randomHtmlishString(random(), maxNumElements);
Analyzer a = newTestAnalyzer();
checkAnalysisConsistency(random(), a, random().nextBoolean(), text);
a.close();
}
public void testRandomText() throws Exception {
StringBuilder text = new StringBuilder();
int minNumWords = 10;
int maxNumWords = 10000;
int minWordLength = 3;
int maxWordLength = 20;
int numWords = TestUtil.nextInt(random(), minNumWords, maxNumWords);
switch (TestUtil.nextInt(random(), 0, 4)) {
case 0: {
for (int wordNum = 0 ; wordNum < numWords ; ++wordNum) {
text.append(TestUtil.randomUnicodeString(random(), maxWordLength));
text.append(' ');
}
break;
}
case 1: {
for (int wordNum = 0 ; wordNum < numWords ; ++wordNum) {
text.append(TestUtil.randomRealisticUnicodeString
(random(), minWordLength, maxWordLength));
text.append(' ');
}
break;
}
default: { // ASCII 50% of the time
for (int wordNum = 0 ; wordNum < numWords ; ++wordNum) {
text.append(TestUtil.randomSimpleString(random()));
text.append(' ');
}
}
}
Reader reader = new HTMLStripCharFilter
(new StringReader(text.toString()));
while (reader.read() != -1);
}
public void testUTF16Surrogates() throws Exception {
Analyzer analyzer = newTestAnalyzer();
// Paired surrogates
assertAnalyzesTo(analyzer, " one two ��three",
new String[] { "one", "two", "\uD86C\uDC01three" } );
assertAnalyzesTo(analyzer, " ��", new String[] { "\uD86C\uDC01" } );
assertAnalyzesTo(analyzer, " ��", new String[] { "\uD86C\uDC01" } );
assertAnalyzesTo(analyzer, " ��", new String[] { "\uD86C\uDC01" } );
// Improperly paired surrogates
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD\uE28F" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD\uE28F" } );
assertAnalyzesTo(analyzer, " 훚�", new String[] { "\uD6DA\uFFFD" } );
assertAnalyzesTo(analyzer, " 훚�", new String[] { "\uD6DA\uFFFD" } );
// Unpaired high surrogates
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �<br>", new String[] { "�" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �<br>", new String[] { "�" } );
// Unpaired low surrogates
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �<br>", new String[] { "�" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �", new String[] { "\uFFFD" } );
assertAnalyzesTo(analyzer, " �<br>", new String[] { "�" } );
analyzer.close();
}
public static void assertHTMLStripsTo(String input, String gold, Set<String> escapedTags) throws Exception {
assertHTMLStripsTo(new StringReader(input), gold, escapedTags);
}
public static void assertHTMLStripsTo(Reader input, String gold, Set<String> escapedTags) throws Exception {
HTMLStripCharFilter reader;
if (null == escapedTags) {
reader = new HTMLStripCharFilter(input);
} else {
reader = new HTMLStripCharFilter(input, escapedTags);
}
int ch = 0;
StringBuilder builder = new StringBuilder();
try {
while ((ch = reader.read()) != -1) {
builder.append((char)ch);
}
} catch (Exception e) {
if (gold.equals(builder.toString())) {
throw e;
}
throw new Exception
("('" + builder.toString() + "' is not equal to '" + gold + "'). " + e.getMessage(), e);
}
assertEquals("'" + builder.toString() + "' is not equal to '" + gold + "'",
gold, builder.toString());
}
}