File: faq-common.xml

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<?xml version='1.0' encoding='UTF-8'?>
<!--
 * 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.
-->
<!DOCTYPE faqs SYSTEM 'dtd/faqs.dtd'>
<faqs title='Common Problems FAQs'>
 <faq title='Parsing HTML Generated an Error'>
  <q>
   I tried to use &ParserName; to parse an HTML file and it
   generated an error. What did I do wrong?
  </q>
  <a>
   <p>
    Unfortunately, HTML does not, in general, follow the XML 
    grammar rules. Most HTML files do not meet the XML style 
    guidelines. Therefore, the XML parser generates XML 
    well-formedness errors.
   </p>
   <p>Typical errors include:</p>
   <ul>
    <li>
     Missing end tags, e.g. &lt;P&gt; with no &lt;/P&gt; (end 
     tags are not required in HTML)
    </li>
    <li>
     Missing closing slash on &lt;IMG HREF="foo" <em>/</em>&gt; 
     (not required in HTML)
    </li>
    <li>
     Missing quotes on attribute values, e.g. &lt;IMG width="600"&gt; 
     (not generally required in HTML)
    </li>
   </ul>
   <p>
    HTML must match the XHTML standard for well-formedness before it 
    can be parsed by &ParserName; or any other XML parser. You can 
    find the 
    <jump href="http://www.w3.org/TR/2002/REC-xhtml1-20020801/">XHTML 
    standard</jump> on the 
    <jump href="http://www.w3.org/">W3C web site</jump>.
   </p>
  </a>
 </faq>
 <faq title='UTF-8 Character Error'>
  <q>I get an &quot;invalid UTF-8 character&quot; error.</q>
  <a>
   <p>
    There are many Unicode characters that are not allowed in an 
    XML document, according to the XML spec. Typical disallowed 
    characters are control characters, even if you escape them 
    using the Character Reference form: &amp;#xxxx; . See the XML 1.0
    specification, sections 
    <jump href="http://www.w3.org/TR/2006/REC-xml-20060816/#charsets">2.2</jump> 
    and 
    <jump href="http://www.w3.org/TR/2006/REC-xml-20060816/#sec-references">4.1</jump> 
    for details. If the parser is generating this error, it is very
    likely that there is a character in the file that you can not see.
    You can generally use a UNIX command like &quot;od -hc&quot; to 
    find it.
   </p>
  </a>
 </faq>
 <faq title='Error Accessing EBCDIC XML Files'>
  <q>
   I get an error when I access EBCDIC XML files, what is happening?
  </q>
  <a>
   <p>
    If an XML document/file is not UTF-8, then you MUST specify the
    encoding. When transcoding a UTF8 document to EBCDIC, remember 
    to change this:
   </p>
   <ul>
    <li>
     &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt; 
     <br/>
     to something like this:
     <br/>
     &lt;?xml version=&quot;1.0&quot; encoding=&quot;ebcdic-cp-us&quot;?&gt;
    </li>
   </ul>
  </a>
 </faq>
 <faq title='EOF Character Error'>
  <q>
   I get an error on the EOF character (0x1A) -- what is happening?
  </q>
  <a>
   <p>
    You are probably using the <em>LPEX</em> editor, which 
    automatically inserts an End-of-file character (0x1A) at the end 
    of your XML document (other editors might do this as well). 
    Unfortunately, the EOF character (0x1A) is an illegal character 
    according to the XML specification, and &ParserName; 
    correctly generates an error.
   </p>
  </a>
 </faq>
</faqs>