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| 33 | | | package org.jcoderz.commons.doclet; |
| 34 | | | |
| 35 | | | import java.io.ByteArrayInputStream; |
| 36 | | | import java.io.ByteArrayOutputStream; |
| 37 | | | import java.io.InputStream; |
| 38 | | | import java.io.PrintWriter; |
| 39 | | | import java.io.StringWriter; |
| 40 | | | import java.util.logging.Level; |
| 41 | | | import java.util.logging.Logger; |
| 42 | | | |
| 43 | | | import org.w3c.tidy.Configuration; |
| 44 | | | import org.w3c.tidy.Tidy; |
| 45 | | | |
| 46 | | | |
| 47 | | | |
| 48 | | | |
| 49 | | | |
| 50 | | | @author |
| 51 | | | |
| 52 | 100 | | public class HtmlCleaner |
| 53 | | | { |
| 54 | | | |
| 55 | 75 | | private static final String CLASSNAME = HtmlCleaner.class.getName(); |
| 56 | | | |
| 57 | | | |
| 58 | 100 | | private static final Logger logger = Logger.getLogger(CLASSNAME); |
| 59 | | | |
| 60 | | | private static final String FIX_HEADER |
| 61 | | | = "<html><head><title>clean</title></head><body>"; |
| 62 | | | |
| 63 | | | private static final String FIX_FOOTER |
| 64 | | | = "</body></html>"; |
| 65 | | | |
| 66 | 100 | | private String mWarnings = ""; |
| 67 | 100 | | private boolean mHasErrors = false; |
| 68 | | | |
| 69 | | | |
| 70 | | | |
| 71 | | | @param |
| 72 | | | @return |
| 73 | | | |
| 74 | | | public String clean (CharSequence in) |
| 75 | | | { |
| 76 | 100 | | if (logger.isLoggable(Level.FINER)) |
| 77 | | | { |
| 78 | 100 | | logger.entering(CLASSNAME, "clean(CharSequence)", in); |
| 79 | | | } |
| 80 | 100 | | mHasErrors = false; |
| 81 | 100 | | final Tidy tidy = new Tidy(); |
| 82 | 100 | | final String inData = FIX_HEADER + in + FIX_FOOTER; |
| 83 | 100 | | final StringWriter err = new StringWriter(); |
| 84 | 100 | | String result = null; |
| 85 | | | try |
| 86 | | | { |
| 87 | 100 | | tidy.setCharEncoding(Configuration.UTF8); |
| 88 | 100 | | tidy.setMakeClean(true); |
| 89 | 100 | | tidy.setXmlOut(true); |
| 90 | 100 | | tidy.setRawOut(true); |
| 91 | 100 | | tidy.setNumEntities(true); |
| 92 | 100 | | tidy.setWraplen(0); |
| 93 | | | |
| 94 | 100 | | tidy.setErrout(new PrintWriter(err)); |
| 95 | | | |
| 96 | 100 | | final InputStream inStream = new ByteArrayInputStream( |
| 97 | | | inData.getBytes("utf-8")); |
| 98 | | | |
| 99 | 100 | | final ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| 100 | | | |
| 101 | 100 | | tidy.parse(inStream, out); |
| 102 | | | |
| 103 | 100 | | final String resultString = new String(out.toByteArray(), "utf-8"); |
| 104 | | | |
| 105 | 100 | | final int start = resultString.indexOf("<body>"); |
| 106 | 100 | | final int end = resultString.lastIndexOf("</body>"); |
| 107 | | | |
| 108 | 100 | | if (start != -1 && end != -1) |
| 109 | | | { |
| 110 | 100 | | result = resultString.substring( |
| 111 | | | start + "<body>\n".length(), end).trim(); |
| 112 | | | } |
| 113 | | | else |
| 114 | | | { |
| 115 | 100 | | result = "Invalid HTML could not be parsed."; |
| 116 | | | } |
| 117 | | | |
| 118 | 100 | | if (tidy.getParseWarnings() == 0 && tidy.getParseErrors() == 0) |
| 119 | | | { |
| 120 | 100 | | mWarnings = ""; |
| 121 | | | } |
| 122 | | | else |
| 123 | | | { |
| 124 | 100 | | mWarnings = err.toString(); |
| 125 | | | } |
| 126 | 100 | | mHasErrors = (tidy.getParseErrors() == 0); |
| 127 | | | } |
| 128 | 0 | | catch (Exception ex) |
| 129 | | | { |
| 130 | 0 | | result = "Invalid HTML could not be parsed."; |
| 131 | 0 | | err.write(result); |
| 132 | 0 | | err.write("Got exception:"); |
| 133 | 0 | | err.write(ex.toString()); |
| 134 | 0 | | ex.printStackTrace(new PrintWriter(err)); |
| 135 | 0 | | mWarnings = err.toString(); |
| 136 | 0 | | logger.log(Level.FINER, |
| 137 | | | "Could not handle html fragment. '" + in + "'." , ex); |
| 138 | 0 | | mHasErrors = true; |
| 139 | 100 | | } |
| 140 | 100 | | if (logger.isLoggable(Level.FINER)) |
| 141 | | | { |
| 142 | 100 | | logger.exiting(CLASSNAME, "clean(CharSequence)", result); |
| 143 | | | } |
| 144 | 100 | | return result; |
| 145 | | | } |
| 146 | | | |
| 147 | | | |
| 148 | | | |
| 149 | | | @return |
| 150 | | | |
| 151 | | | public String getWarnings () |
| 152 | | | { |
| 153 | 100 | | return mWarnings; |
| 154 | | | } |
| 155 | | | |
| 156 | | (1) | public boolean hasErrors () |
| 157 | | | { |
| 158 | 0 | | return mHasErrors; |
| 159 | | | } |
| 160 | | | } |
| 161 | | | |