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/**************************************************************
*
* 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.openoffice.ooxml.schema.model.schema;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;
/** Map between namespace prefixes and URIs.
* While namespace URIs can have different prefixes in different schemas,
* we will use only one prefix in the OOXML parser. This class
* provides these global prefixes.
*/
public class NamespaceMap
implements Iterable<Entry<String, String>>
{
public NamespaceMap ()
{
maURIToPrefixMap = new HashMap<>(maPredefinedURIToPrefixMap);
// Predefine namespace prefixes.
// If possible then use the ones already in use in the schema files or documents written by MS Office,
// appended with a 06 or 12 for the ECMA-376 standards of 2006 (1st edition) or 2012 (4th edition).
maURIToPrefixMap.put("http://schemas.openxmlformats.org/drawingml/2006/main", "a06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/main", "a12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing", "wp06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/wordprocessingDrawing", "wp12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/wordprocessingml/2006/main", "w06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/wordprocessingml/main", "w12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/drawingml/2006/picture", "dpct06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/picture", "dpct12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/officeDocument/2006/math", "m06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/officeDocument/math", "m12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/officeDocument/2006/relationships", "r06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/officeDocument/relationships", "r12");
// Invent prefixes that are not in use.
maURIToPrefixMap.put("http://schemas.openxmlformats.org/spreadsheetml/2006/main", "s06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/spreadsheetml/main", "s12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/presentationml/2006/main", "p06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/presentationml/main", "p12");
maURIToPrefixMap.put("http://schemas.openxmlformats.org/schemaLibrary/2006/main", "sl06");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/schemaLibrary/main", "sl12");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/diagram", "dd12");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/chart", "dc12");
maURIToPrefixMap.put("http://purl.oclc.org/ooxml/drawingml/lockedCanvas", "dlc12");
}
public void ProvideNamespace (
final String sNamespaceURI,
final String sDefaultPrefix)
{
if ( ! maURIToPrefixMap.containsKey(sNamespaceURI))
{
final String sPrefix;
// Check if we can use the given prefix.
if (sDefaultPrefix==null || IsPrefixUsed(sDefaultPrefix))
{
// Prefix is already used. We have to create a new and unique one.
String sCandidate = null;
for (int nIndex=0; nIndex<=26; ++nIndex)
{
if (nIndex == 26)
throw new RuntimeException("can not invent more than 26 namespace names");
sCandidate= new String(new byte[]{(byte)('A'+nIndex)});
if ( ! maURIToPrefixMap.containsKey(sCandidate))
break;
}
sPrefix = sCandidate;
}
else
{
// Use the given prefix.
sPrefix = sDefaultPrefix;
}
maURIToPrefixMap.put(sNamespaceURI, sPrefix);
}
}
public String GetNamespacePrefix (final String sURI)
{
return maURIToPrefixMap.get(sURI);
}
public Iterator<Entry<String,String>> iterator ()
{
return maURIToPrefixMap.entrySet().iterator();
}
public Object GetCount()
{
return maURIToPrefixMap.size();
}
/** Return all namespace entries sorted on the prefix.
*/
public Iterable<Entry<String,String>> GetSorted ()
{
final Map<String,Entry<String,String>> aSortedEntries = new TreeMap<>();
for (final Entry<String,String> aEntry : maURIToPrefixMap.entrySet())
if (aEntry.getValue() == null)
aSortedEntries.put("", aEntry);
else
aSortedEntries.put(aEntry.getValue(), aEntry);
return aSortedEntries.values();
}
private boolean IsPrefixUsed (final String sPrefix)
{
for (final String sUsedPrefix : maURIToPrefixMap.values())
{
if (sUsedPrefix == null)
continue;
if (sUsedPrefix.equals(sPrefix))
return true;
}
return false;
}
private final Map<String,String> maURIToPrefixMap;
private final static Map<String,String> maPredefinedURIToPrefixMap;
static
{
maPredefinedURIToPrefixMap = new HashMap<>();
maPredefinedURIToPrefixMap.put("http://www.w3.org/2001/XMLSchema", "xsd");
}
}
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